- Heinz Nixdorf Institut

Transcription

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HEINZ NIXDORF INSTITUT
Interdisciplinary Research Cente
Fuerstenallee 11, 33102 Paderbo
Phone +49 (0)5251|60 62 11
Fax
+49 (0)5251|60 62 12
http://wwwhni.upb.de
HEINZ NIXDORF
INSTITUTE
HEINZ NIXDORF INSTITUTE Annual Report 2004
Members of Board of Directors
Professor Group:
Prof. Dr.-Ing. habil. Wilhelm
Prof. Dr.-Ing. Jürgen Gause
Prof. Dr.-Ing. Reinhard KeilProf. Dr. math. Friedhelm M
Prof. Dr. rer. nat. Burkhard
Prof. Dr. phil. Volker Peckha
Prof. Dr. rer. nat. Franz-Jose
Prof. Dr.-Ing. Ulrich Rückert
Prof. Dr. rer. nat. Wolfgang
Prof. Dr.-Ing. Jörg Wallasch
Prof. Dr. phil. hist. Manfred
* Members of Executive Board
Academic Staff:
Markus Hohenhaus
Sabina Rips
Annual Report
Non-Academic Staff:
Karsten Mette
2004
Student Group:
Michael Köster
Members of Curatorship
Nominated by Stiftung Westfal
Dr. Horst Nasko, Deputy Ch
Heinz Paus, Mayor of the C
Prof. Dr. Hartwig Steusloff,
Institute of Information an
Nominated by the University:
Prof. Dr. Thomas Lengauer,
Prof. Dr. rer. nat. Nikolaus R
Prof. Dr. Holm Tetens, Freie
HEINZ NIXDORF INSTITUTE
University of Paderborn
Jointly nominated:
Prof. Dr. Otto K. Ferstl, Otto
Prof. Dr. Klaus Waldschmidt
Prof. Dr. Dr. h. c. Engelbert
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Interdisciplinary Research Center for Computer Science and Technology
Fuerstenallee 11, 33102 Paderborn
Phone +49 (0) 5251|60 62 11
Fax
+49 (0) 5251|60 62 12
Members of Board of Directors
Professor Group:
Prof. Dr.-Ing. habil. Wilhelm Dangelmaier
Prof. Dr.-Ing. Jürgen Gausemeier *
Prof. Dr.-Ing. Reinhard Keil-Slawik
Prof. Dr. math. Friedhelm Meyer auf der Heide (President) *
Prof. Dr. rer. nat. Burkhard Monien
Prof. Dr. phil. Volker Peckhaus
Prof. Dr. rer. nat. Franz-Josef Rammig *
Prof. Dr.-Ing. Ulrich Rückert *
Prof. Dr. rer. nat. Wolfgang Sohler
Prof. Dr.-Ing. Jörg Wallaschek
Prof. Dr. phil. hist. Manfred Wettler *
* Members of Executive Board
Academic Staff:
Markus Hohenhaus
Sabina Rips
Non-Academic Staff:
Karsten Mette
Student Group:
Michael Köster
Members of Curatorship
Nominated by Stiftung Westfalen:
Dr. Horst Nasko, Deputy Chairman and CEO of Board of SNI AG retd.
Heinz Paus, Mayor of the City Paderborn
Prof. Dr. Hartwig Steusloff, Head of Fraunhofer Institute
Institute of Information and Data Processing Karlsruhe
Nominated by the University:
Prof. Dr. Thomas Lengauer, Max-Planck-Institut for Computer Science
Prof. Dr. rer. nat. Nikolaus Risch, Principal of the University of Paderborn
Prof. Dr. Holm Tetens, Freie Universität of Berlin
Jointly nominated:
Prof. Dr. Otto K. Ferstl, Otto Friedrich University of Bamberg
Prof. Dr. Klaus Waldschmidt, University of Frankfurt
Prof. Dr. Dr. h. c. Engelbert Westkämper, University of Stuttgart
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Statistics of the Institute
Statistics of the HNI Work
Academic Profile of the Interdisciplinary Institute
Scientific Results/Publications of the HNI Wor
15 Dipl.-Ingenieur/in Elektrotechnik
5 Master Sc. Electrical Engineering
14 Dipl.-Wirtschaftsingenieur/in Fertigungstechnik
10 Dipl.-Wirtschaftsingenieur/in
Elektrotechnik
1 Juniorprofessor Dr.-Ing.
1 Juniorprofessor Dr. rer. nat.
1 Hochschuldozent Dr. rer. nat.
1 Dipl.-Medienwissenschaftler
1 Magister Philosophie
1 Magistra Romanistik, Germanistik
1 Dipl.-Pädagoge/Dipl.-Chemiker
1 Dipl.-Psychologin
20 PhD Theses
21 Dipl.-Ingenieur/in Maschinenbau
4 Master Sc. Mechanical Engineering
1 Bachelor Mechanical Engineering
5 Dipl.-Wirtschaftsinformatiker/in
117 Master Theses
4 Dipl.-Physiker/in
3 Dr.-Physik
1 Dr.-Phil.
14 Dr. rer. nat.
External Funds of the HNI Workgroups
5 Dr.-Ing.
Mill. EURO
4 Dipl.-Mathematiker/in
7 Master Sc. Informatics
49 Dipl.-Informatiker/in
8
7
Activities of Employees with PhD
6
(since Foundation of the Institute 1987)
52 Scientific Research
and Lectureship
5
85 Industrial Research
and Development
4
3
2
1
16 Self-employed
0
66 Management
1995
1996
1997
1998
Jobs of the Spin-Offs of the Heinz Nixdorf Institute in the year 2004
Number of Employees
dSpace: approx. 533 Employees
Number of Employees of the HNI Workgroups
UNITY AG: approx. 120 Employees
…
100
Professors
Number of Employees
…
90
80
140
70
60
120
50
100
40
30
80
20
60
Oak Technology
GmbH
UNITY AG
Altanis GmbH
Padersonic GmbH
ScMi AG
NetSkill AG
myview systems
GmbH
Multimedia & more
iXtronics GmbH
IPT Software
GmbH
IML Fraunhofer
FASTEC GmbH
Entrice GmbH
dSpace GmbH
Dr. Ketterer
CentConsult
Pro. X GmbH
0
ATHENA Technologie
Beratungs GmbH
10
40
20
0
1995
1996
1997
1998
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Statistics of the HNI Workgroups
Scientific Results/Publications of the HNI Workgroups
eering
echnik
20 PhD Theses
nenbau
297 Publications
eering
eering
tiker/in
117 Master Theses
External Funds of the HNI Workgroups
Mill. EURO
tiker/in
*estimated value
8
7
6
5
4
3
2
1
0
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004*
Number of Employees of the HNI Workgroups
Professors
Number of Employees
Research Staff
Technical and Administrative Staff
Trainees
140
120
100
80
Oak Technology
GmbH
60
40
20
0
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
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HEINZ NIXDORF
Annual Report
INSTITUTE
2004
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Heinz Nixdorf Institute Annual Report 2004
Contents
Contents
General Description
Cover inside
Statistics of the Institute
Cover inside
Statistics of the HNI Workgroups
Page 6
Vision of the Institute
Page 8
The Research Program
Page 12
Distinguished Research at the Heinz Nixdorf Institute
Page 16
Commitment to support young Researcher
Additional Activities
Page 88
Publications
Fairs/Conferences/Seminars,
Patents, Prizes/Awards,
Additional Functions, Spin-Offs,
Current Research Projects,
Current Industry Co-operations and
Scientific Co-operations
Page 111
Imprint
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Contents
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HNI Workgroups
Page 20
Business Computing, especially CIM
Page 28
Computer Integrated Manufacturing
Prof. Dr.-Ing. Jürgen Gausemeier
Page 36
Computers and Society
Page 42
Algorithms and Complexity
Prof. Dr. math. Friedhelm Meyer auf der Heide
Page 48
Design of Distributed Embedded Systems
Prof. Dr. rer. nat. Franz Josef Rammig
Page 56
System and Circuit Technology
Page 62
Mechatronics and Dynamics
Page 70
Parallel Computing
Page 74
Applied Physics/Integrated Optics
Page 78
Philosophy of Science and Technology
Page 82
Cognitive Psychology
Prof. Dr. phil. hist. Manfred Wettler
Page 86
Computer Operation Activities
Dipl.-Inform. Markus Hohenhaus
Associated
Workgroups
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Heinz Nixdorf
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We are currently experiencing the evolution
from national industrial societies to a global
information society. Information and communication technology is affecting all areas
of life: the boundaries we knew in the past
are no longer relevant. Yet we are also
noticing that fewer and fewer people are
being employed in the more traditional sectors of industry, which is why many regard
the current transition as a threat and would
rather preserve the status quo.
However, the progression to a global
information society offers many opportunities and much scope for creativity: new
proficiencies and workplaces are continuing
to emerge.
Our research focuses on a symbiosis of
computer science and engineering and aims
to provide decisive impetus for new products and services for the global markets
of tomorrow. Our activities will create new
workplaces and sustain prospority.
The problems we have to solve are complex. There are numerous influences that
must be considered from areas such as natural sciences, technology, economics, ecology and the social environment. We are
adopting an interdisciplinary approach
because we see that this offers the best
possibility to find solutions for complex
problems.
Balance between basic research and
applied research
We want to be a leading research institute.
To succeed in this aim, we have to be able
to give decisive impetus in practice but also
be able to recognise problems of tomorrow
early on and find solutions. We place the
same value on basic research, which opens
new horizons and offers new opportunities,
and applied research, which refers to what
is currenty happening in practise.
Commitment to training and education
We are intensely committed to training and
education our students and graduates and
giving them the necessary qualifications so
that they can help shape the future.
Measurable goals
Strategic action is based on measurable
goals. We set ourselves three main goals:
1) The research work must be excellent.
We measure it by our external funds,
by the number of doctorates and habilitations as well as by the number of publications in respected media.
2) The number of innovations in products
and processes of services in industry
that result from our work should be very
high in comparison with other institutes.
3) Our graduates receive appropriate
employment in the business or scientific
world.
In this way, we are following the vision of
Heinz Nixdorf, the founder of our institute.
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While recognizing that our institute relies on the creativity and productivity of our researchers, we try to
constantly focus their skills in core areas because we
know that this is what we have to do in the long term
to achieve the best performance. These core areas are
derived from our institute model and are designed to
meet the challenges of the future global information
society. We are focusing on the following four core areas
at present:
• Intelligent technical systems.
• Networks and mobility.
• Human-Machine interaction.
• Strategies for the products of tomorrow.
What we do creates benefits
We strive to create product and process innovations in
the core areas mentioned. This in turn stimulates the
innovative behaviour of the people in the relevant organizations. We therefore also look at the interaction
between product and process innovations and behavioural innovations, all of which should increase the competitiveness of the companies with whom we work or
provide a future perspective for new companies that
emerge on the basis of our work. Our innovations should
add benefit wherever possible. It is also particularly
important to us in this regard that research findings be
implemented quickly in practice. We are ideally equipped
to do this, because we amalgamate basic research,
applied research and industrial experience.
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Intelligent Technical Systems
Our technical environment is already fully IT ready. Some 20 billion microprocessors have been produced to date, i.e. more than
three for every member of the world's population. Nevertheless,
this process is only in its infancy. The vast majority of IT-related
applications in technical systems to date can be characterized as
elementary control and arithmetic operations.
Greater autonomy, flexibility, ability to learn and proactive
behaviour
Even if this step has already led to an enormous increase in the
performance of technical systems, the potential to increase this
even further is by no means exhausted. Future systems will be
characterized by considerably more autonomy, adaptability, flexibility, ability to learn and proactive behaviour. This behaviour will
no longer be dictated fully by developers, rather will be predetermined by particular behavioural patterns, which will then be
implemented by these intelligent systems as the situation
demands.
• Autonomy: Intelligent technical systems are not limited to
detailed and precise preplanned behaviour. Rather they have
a broad range of behavioural patterns at their disposal,
within the framework of which they can act autonomously.
• Adaptability: The adaptability familiar from the area of control technology, can be built on considerably with intelligent
systems. Thus, adaptation can be performed on the basis of
strategic objectives and taking account of the most varied
environmental data.
• Flexibility: Intelligent technical systems do not have to be
pre-tailored for specific tasks. They can offer a variety of
capabilities that are only partially required at different
times.
• Ability to learn: Intelligent systems can assess past behaviour based on self-reflection and derive future behavioural
patterns from this. Autonomy and adaptability are of course
prerequisites for this ability to learn.
• Proactive behaviour: If systems can make decisions in terms
of their future behaviour based on knowledge of past and
present situations as well as environmental factors, such
systems are referred to as proactive systems. This behaviour
can be made even more efficient if account is also taken of
possible and probable future behaviour of environmental
factors.
SFB 614 and International Graduate School as leading
contributions to basic research
All of these aspects play a central role for self-optimizing systems.
The special new research initiative 614 “Self-Optimizing Concepts
and Structures Mechanical Engineering” provides extensive basic
research for intelligent technical systems in the future. The leading role played by the HNI in the “International Graduate School
of Dynamic Intelligent Systems” is also part of this.
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Participating HNI research groups:
• Business Computing, especially CIM (Prof. Dangelmaier)
• Computer Integrated Manufacturing (Prof. Gausemeier)
• Parallel Computing (Prof. Monien)
• Design of Parallel Systems (Prof. Rammig)
• System and Circuit Technology (Prof. Rückert)
• Mechatronics and Dynamics (Prof. Wallaschek)
Networks and Mobility
Combining mobility and networking opens up new perspectives.
Networks have become indispensable elements of our life: The
Internet has turned the world into a global village, technical systems, such as vehicles, contain a high figure of connected components, while closely coupled parallel systems allow resolution of
the most complex problems. We are currently experiencing a radical change toward mobility, with mobile stations emerging in
place of location-dependent stations.
However, the critical performance explosion can be expected
from the linking of networking and mobility. Major driving forces
emerging from the networking of systems and system users
include the ubiquitous availability of global knowledge, the
potential to impact any remote objects, the ability to develop
cooperative all-in solutions and the bundling of performance and
service. By combining such potential with the aspect of mobility,
its use is no longer restricted to a fixed workplace, rather is
accessible from anywhere, even while moving. On the other hand,
specific information of a system or user's geographic location can
now also be recorded and used selectively (location based solutions). Three application scenarios are presented below as examples that connect these two aspects:
a) Streetcars can use information about their current positions
and the positions of other vehicles within a certain radius to
cooperate in illuminating the roadway clearly (without dazzling) and equally in the dark.
b) Mobile radio stations can use the information about their positions and the positions of other devices to build up and operate a comprehensive communication network without base
stations (mobile ad hoc networks). The aspect of cooperation
also plays a major role in this case.
c) Wireless, networked mobile systems comprising notebooks and
PDAs offer functionalities that come up to the standard of networked, location-based computer systems.
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This vision is naturally linked with a variety of challenges,
including:
• How should globally accessible information be selectively
filtered and enabled for use?
• How can efficient communication structures be set up
and maintained?
• How can remote objects with predictable and controllable
latency be influenced?
• How can a minimum bandwidth and maximum
transmission times be guaranteed over communication
channels (Quality of Service)?
• In terms of mobile use, how can the necessary energy
supply to the communication devices be guaranteed?
• How can distributed algorithms be implemented over
only partially secure and constantly changing communication networks?
• How can the position and direction of movement be
determined and predicted precisely in the case of mobile
communication partners?
SFB 376 and Graduate College as essential contributions to
basic research
The Heinz Nixdorf Institute devotes itself to such questions in
the framework of the Collaborative Research Centres 376
“Massively Parallel Computing: Algorithms, Design Methods,
Applications”, of the “Graduate College of Automatic Configuration in Open Systems” and the “International Graduate School
of Dynamic Intelligent Systems”.
• Algorithms and Complexity (Prof. Meyer auf der Heide)
• Design of Parallel Systems (Prof. Rammig)
• Applied Physics/Integrated Optics (Prof. Sohler)
intelligence but also about using the machine intelligently. It is
just as important that human/computer interfaces are adapted to
the sensory and motor capabilities of humans as to their cognitive
abilities. On the one hand, therefore, this involves traditional
interfaces to interactive systems and on the other hand communication and cooperative processing functions.
With the increasing integration of electronic functions in
devices and products, the wealth of user interfaces they offer is
also expanding. Ergonomic principles and concepts of universal
usability should ensure that in an environment with heterogeneous and mobile devices these devices can be handled uniformly
despite different properties and functions. Complex applications
such as assistant systems for vehicles and multimedia-based
teaching and learning also demand the linking of functionality
and interaction in a completely new way.
The quality of use ultimately determines the success of a system
Our goal is to link high technical quality with high user quality. In
order to acquire the relevant knowledge to do this, theoretical
principles are defined and studies carried out on suitability for use
of devices and the everyday suitability of complex technical configurations. New innovative solutions are being developed for
interaction between humans and machines in order to open up
new implementation perspectives (e.g. wearable computing). One
of our special strengths in this regard is to combine in practical
terms the underlying principles, empirical findings and innovations in complex user scenarios.
• Computers and Society (Prof. Keil-Slawik)
• Algorithms and Complexity (Prof. Meyer auf der Heide)
• Cognitive Psychology (Prof. Wettler)
Strategies for the Products of Tomorrow
Human-Machine Interaction
While the computer may be ubiquitous, the opportunities offered
by information and communication technology seem only to be
constrained by our imagination. An imaginary space is created,
which we refer to as Cyberspace, in which people communicate,
work together and share experiences. To most people, the access
to this world seems abstract and not highly intuitive, because
looking into Cyberspace from our computer monitors is like looking through a keyhole.
Tailoring technologies such as VR, AR and software agents to the
abilities of the human being
New technologies, such as Virtual Reality, Augmented Reality and
Software Agents offer us fascinating opportunities for overcoming these deficits. We know that it's not just about the machine's
Production is an important area for the future.
Production includes all activities in relation to the development,
manufacturing and marketing of a product. Production creates
jobs and prosperity. Our activities therefore ultimately lead to the
question as to how we can stimulate production.
What counts is foresight. This is our destiny
Competition is tough in the global village, offering good opportunities for the hardy. Yet competitive situations are changing constantly. What seems like a good opportunity today and is stimulating investment, may be obsolete tomorrow. It is no longer adequate in the face of such dramatic change to simply solve the
obvious problems of the present; this will not necessarily allow
the challenges of the future to be tackled. Foresight and a strategic approach are called for, i.e. the success potentials of tomorrow
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must be recognized early on and exploited in well-timed. We are
predestined to achieve this, because we anticipate the problems of
tomorrow in our research and develop suitable solutions.
The services we provide help global players as well as small
and medium sized companies. Globally active companies seek out
attractive markets and sites with highly developed production,
logistical and supplier structures. Apart from the actual product
that is being supplied, the product-related service and the sustainability of the benefits offered are becoming increasingly
important for small and medium sized companies, who frequently
want to be active in these structures.
A toolset for future-oriented company management
We offer a comprehensive toolset for designing production for
the future. This approach covers four levels, which are generally
worked through from top to bottom.
• Foresight (scenario): At this level, we anticipate
developments in markets and technologies in order to
recognize opportunities but also threats to established
business early on.
• Strategies: At this level, we develop business, product and
technology strategies in order to exploit these recognized
opportunities well-timed.
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• Processes: We design business processes at this level
according to the motto “structure follows strategy” so
that the strategy can be implemented.
• Systems: IT and communications systems are deployed at
this level, which support the well-structured business
processes.
Effectiveness and efficiency are hence twin goals for us. This
characterizes us in particular. We apply the toolset described to
the three main business processes in a manufacturing company:
1) the product development process (product development and
manufacturing planning), 2) the manufacturing process (industrial
automation) and 3) the order processing process (procurement,
production and distribution logistics).
Innovation of
• products,
• processes
and
in practice
Structure of the Research Program of the Heinz Nixdorf Institute
Source: Olaf Schmidt
• teamwork
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Distinguished Research at the
Heinz Nixdorf Institute
“Collaborative Research Centres are long standing research institutions in universities in which scientists work together in the
framework of interdisciplinary research programs. […] Collaborative
Research Centres allow demanding, complex and long-term research
projects to be handled by concentrating and coordinating the skills
available in a university.” (translated from the original German: Deutsche
Forschungsgemeinschaft: Annual Report 2001, page 110).
This characterization of Collaborative Research Centres (Sonderforschungsbereiche, SFBs) formulated by the Deutsche Forschungsgemeinschaft coincides with the assertion by the Heinz Nixdorf Institute to contribute to solving complex tasks through the interaction
of computer scientists, engineers and economists.
Consequently, the two special research initiatives of our university – SFB 376 “Massively Parallel Computing: Algorithms, Design
Methods and Applications” (since 1995) and SFB 614 “Self-optimizing
Concepts and Structures in Mechanical Engineering” (since 2002) –
have emerged under the responsibility and leading involvement of
the Heinz Nixdorf Institute. Some 100 scientists are involved, with
over 40 of these financed by the DFG.
With DELIS – Dynamically Evolving Large-scale Information Systems – researchers of the Heinz Nixdorf Institute assumed co-ordination and control of an European Union Research Project for the first
time, starting in january 2004. It is comparable to one funding period of a Collaborative Research Centre in amount and extend.
Both Collaborative Research Centres and DELIS strongly characterize the basic research and are an expression of the excellence of
the research carried out by the Heinz Nixdorf Institute.
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SFB 376 “Massively Parallel Computing:
Algorithms, Design Methods and Applications”
Speaker: Prof. Dr. math. Friedhelm Meyer auf der Heide
Networks have become an indispensable part of our world, for
example as high-performance computers, as communication and
information systems, or as planning and control components for
transport and production systems. The ever-increasing complexity
of such systems constantly presents new challenges for computer
scientists and engineers.
SFB 376 began working in 1995 with the aim of developing
methods and techniques for exploiting the computational capabilities of parallel processor networks and for demonstrating the
performance of the algorithmic solutions and the design methods
produced for embedded, distributed (technical) systems on the
basis of a variety of applications. Since then, the SFB has made
essential contributions to this topic area and acquired international reputation. In addition, it takes account of the rapidly
growing importance of networks as communication and information systems as mentioned above. Apart from the aspect of parallel high-performance computers, research has therefore begun to
focus increasingly on areas such as usability of heterogeneous
dynamic networks, for example mobile, wireless communication
networks consisting of notebooks or mobile phones. This research
branch has become increasingly important during the last year,
and intensive cooperation with the EU-project DELIS are grown.
The research program is subdivided into the project areas
Algorithms, Design Methods and Applications. The algorithmic
orientation contributes to particularly efficient, i.e. runtime-optimizing solutions. Design techniques for embedded real-time systems and for specialized hardware are being developed in method
based areas. Both the algorithmic and methodological work is
evaluated in applications. We therefore consciously selected
applications that present challenges for our methods and techniques.
http://www.upb.de/sfb376
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SFB 614 “Self-optimizing Concepts and
Structures in Mechanical Engineering”
Speaker: Prof. Dr.-Ing. Jürgen Gausemeier
Most modern engineering products already make use of the close
interaction between classical mechanics, electronics, control engineering and software that is known as “mechatronics”.
Information technology is an essential driver of this development, which will enable future systems with inherent “intelligence”. We denote this perspective by the term of “self-optimization”. The self-optimization process of a technical system is characterized by the ability to modify system targets endogenously
according to changing environmental conditions and, as a result,
a target-compliant, autonomous adaptation of the parameter
and if necessary the structure and the behaviour of the system.
Therefore, self-optimization reaches far beyond basic known
control- and adaptation strategies; self-optimization allows for
systems with inherent “intelligence”, which are able to respond
independently and flexibly to changing environmental conditions.
Starting in July 2002, the Collaborative Research Centre pursues the long-term goal to open up the active paradigm of selfoptimization for mechanical engineering and to develop a toolkit
for the design and construction of such systems. The resulting
research program is based on three hypotheses and is set up for
a decade.
➔ Hypothesis 1: The active paradigm of self-optimization opens
up fascinating prospects for mechanical engineering and related
industries that cannot be made available through advanced control engineering, such as adaptive control.
➔ Hypothesis 2: In terms of software engineering, intelligent
functional groups of mechanical engineering can be understood
as software agents. Accordingly, a complex mechatronic system
that is based on cooperation of multiple functional groups is
called a multiagent system.
➔ Hypothesis 3: The design and construction of self-optimizing
systems of mechanical engineering calls for novel approaches and
methods that far exceeds the once already known today in design
methodology.
The research activities of the first period merge into four focal
points:
1 | Basic concepts: In essence, those include systematics of system adaption and self-optimization. This work is published in the
HNI proceeding: FRANK, U.; GIESE, H.; KLEIN, F.; OBERSCHELP; O.;
SCHMIDT, A.; SCHULZ, B.; VÖCKING, H.; WITTING, K.; GAUSEMEIER,
J. (Hrsg.): Selbstoptimierende Systeme des Maschinenbaus –
Definitionen und Konzepte. HNI-Verlagsschriftenreihe, Band 155,
Paderborn, 2004.
2 | Architecture of self-optimizing systems: The focal point
here is the so-called Operator-Controller-Module (OCM). It
extends the conventional control engineering by cognitive abilities and provides the fundamentals for the structuring of
complex systems of mechanical engineering in the sense of
a multiagent-system.
Non-predictable influences lead to the change of the target system (travel time, comfort, power requirement, noise emission etc.)
and accordingly to the adjustment of the system behaviour.
3 | Implemented assembly groups and systems: This work is
based on the research infrastructure of the “Neue Bahntechnik
Paderborn” that includes a test track, which is operating since
2003. Assembly groups of autonomous vehicles (linear-drivemodule, energy management and suspension- and tilt-module),
as well as a convoy simulation are realized. This demonstrates
that self-optimization opens up remarkable potentials for benefits.
4 | Design methodology: By means of realized systems it is
demonstrated, how such self-optimizing systems are to be
designed. Our focus was the domain-spreading design of a principle solution, for which no archetype exists, neither in the area
of mechatronics nor for self-optimizing systems of mechanical
engineering. Another focus was the modelling of software for
the implementation of self-optimization.
With these results, the three hypotheses have been approved
as an interim result. The results reflect an important milestone
in terms of the long-term goals mentioned above.
http://www.sfb614.de
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The European Integrated Project DELIS “Dynamically Evolving
Large-scale Information Systems”
Goals of DELIS are:
Information Systems like the physical Internet, the World
Wide Web, telecommunication networks, mobile ad-hoc networks, or peer-to-peer networks have reached a level that
puts them beyond our ability to deploy them, manage them,
and keep them functioning correctly through traditional
techniques. Reasons for this are their sheer size with millions
of users and interconnected devices and their dynamics; they
evolve dynamically over time, i.e., components change or are
removed or inserted permanently. For such systems, we have
to abandon the goal of global optimality.
The objective of the DELIS project therefore is to develop
self-regulating and self-repairing mechanisms that, on the
one hand, are decentralized, scalable, and adapt to changes
in their environments. On the other hand, these decentralized
mechanisms have to lead to a globally acceptable behaviour,
avoiding undesirable or unstable situations.
We believe that the combination of insights from statistical physics, market mechanisms, and biological and social
behaviour with advanced algorithmic research in Computer
Science is the right combination of expertise necessary to
develop methods, techniques, and tools to cope with such
challenges imposed by large scale information systems, and
to contribute to the world-wide effort in complex systems
research towards understanding the principles necessary to
manage such systems.
1. To understand the structure, self organization, and dynamics
of large scale information systems like the internet, the World
Wide Web, peer-to-peer systems, with support of methods
from statistical physics.
2. To provide methods, techniques and tools for controlling and
optimizing such systems, using, among others, large scale
optimization techniques and inspirations from biology.
3. To apply methods from market mechanism and game theory
in order to understand and to organize the competition of
factors in the system for resources like bandwidth, computing
power, data etc.
4. To demonstrate the capabilities of our methods, techniques
and tools in two application areas of high scientific and
economic impact:
– a management platform for telecommunication networks
that integrates the wide range of current and future data
formats and services, and
– a decentralized, self-organizing Web search engine based
on a peer-to-peer architecture, where peers collaborate in
order to answer search request with higher result quality
than current centralized search engines.
To accomplish this work, we have set up a consortium of 19 institutions from 11 European countries, led by Prof. Dr. Friedhelm
Meyer auf der Heide, who presents the Paderborn site together
with Prof. Dr. Burkhard Monien and Prof. Dr. Odej Kao. The project
started in January 2004.
http://delis.upb.de
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Heinz Nixdorf Ins
Graduate Coll
Int. Graduate School: http
Notebook University: h
The Heinz Nixdorf Institute is intensively committed to the training and education of students and graduate students studying for
their doctorates with the aim of giving them the start they need
to shape the future. A very special feature of the Heinz Nixdorf
Institute is the close interaction between information science,
natural science, engineering science and economics as well as
aspects of social and cultural sciences. This interaction takes place
within the framework of more than 170 assistant and doctorate
positions in the Heinz Nixdorf Institute. Our dedication to promoting a new generation is expressed in particular in the two
graduate colleges, the leading involvement of the Heinz Nixdorf
Institute in the first International Graduate School at the University of Paderborn as well as in our commitment to developing
innovative services for improving the training infrastructure.
Graduate College
The Heinz Nixdorf Institute has been operating graduate colleges
since 1992 with the aim of offering a learn- and research ambiance to graduators, which will allow them a graduation within
a period of two to three years. After first graduate college “Parallel
Computer Networks in Production Technology” under the management of Prof. Dr. Meyer auf der Heide finished in 2001 after
nine years' sponsorship by the Deutsche Forschungsgemeinschaft
(DFG), the second graduate college “Automatic Configuration in
Open Systems” startet its work after a successful application at
the DFG.
It is run under the management of Prof. Dr. Rückert and is
sponsored by the Heinz Nixdorf Institute itself as well as by DFG.
The plan is for up to 17 scholarship holders to work closely with
the two existing Collaborative Research Centres at the Heinz Nixdorf Institute in the framework of the second college, i.e. SFB 376
“Massively Parallel Computing: Algorithms, Design Methods, Applications” and SFB 614 “Self-Optimizing Concepts and Structures of
Mechanical Engineering”.
The interdisciplinary work in the college together with the
technical specialization of the individual faculties offer graduates
a considerable advantage and significantly increase the quality of
the scientific work.
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stitute: http://wwwhni.upb.de/
lege: http://wwwhni.upb.de/gk/
tp://www.upb.de/graduateschool/
http://hrz.upb.de/uni-mobilis/
International Graduate School
Notebook University
The International Graduate School “Dynamic Intelligent Systems”,
which was founded in autumn 2001, is one of six institutions supported by the state of North Rhine-Westphalia to promote top
young specialists in natural sciences areas. Highly qualified graduates can study strategically for their doctorate within a three-year
period in the framework of a course of doctorate studies, motivated by intensive support. In the framework of this NRW program,
the International Graduate School “Dynamic Intelligent Systems”
is the only institution involved in the area of application-oriented
IT. An interdisciplinary approach, internationality and excellence
are the trademarks of the institution, managed scientifically by
Prof. Dr. Schäfer. The International Graduate School makes a significant contribution to the development of the OWL region and
Paderborn as a scientific site.
Research at the English-speaking institution focuses on the
enhanced development of dynamically linked systems. Such systems are characterized by the replacement or modification of
software and hardware during their operational phase.
Eight professors from the Heinz Nixdorf Institute and another
eight professors from the University of Paderborn coached in the
year under review 49 students from 13 countries. At the end of
the year the first students submitted their PhD-theses in due
time.
Within the International Graduate Program (IPP) of the German Academic Exchange Service (DAAD) and the German
Research Foundation (DFG), the International Graduate School has
been supported as a center of scientific excellence since 2002. The
companies DaimlerChrysler, Hella, Siemens and Unity cooperate
with the International Graduate School and finance some PhDprojects.
Apart from institutional activities, the Heinz Nixdorf Institute in
cooperation with the University of Paderborn supports the change
from a configuration-oriented to a service-oriented infrastructure.
A key aspect of this is the project sponsored in the framework of
the promotion and development program “New Media in Education - Notebook University”, i.e. “Uni-Mobilis: Mobile use of infrastructures to promote learning through the setting up of a consistent service infrastructure” under the project management of
Prof. Dr. Keil-Slawik. The project focuses on the comprehensive
and consistent use of digital media with the aim of achieving a
new level of quality in training. This combination of quality
improvement and rationalization demands the setting up of a service infrastructure, which in a sense is uncharted territory for the
University of Paderborn, but on the other hand allows it to consolidate its existing commitment to being a “University of the
Information Society” and elevates it to a new level of development.
Overall, the four application areas of economics, mechanical
engineering, chemistry and chemical engineering, as well as
mathematics and information science are involved in the widescale implementation.
Heinz Nixdorf Institute: http://wwwhni.upb.de/
Graduate College: http://wwwhni.upb.de/gk/
Int. Graduate School: http://www.upb.de/graduateschool/
Notebook University: http://hrz.upb.de/uni-mobilis/
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Workgroup Portraits
19
Workgroup Portraits
Workgroup Portraits
HNI Workgroups
Producing Economically in Germany Tomorrow
Recognizing and Exploiting Success Potentials of Tomorrow
Parallel Computing
Applied Physics/Integrated Optics
Cooperative Knowledge Organization – Orientation in Diversity
High Performance = Innovative Computer Systems + Efficient Algorithms
Distributed Embedded Real-Time Systems Become Manageable
Microelectronics – Key Technology and Challenge
With Creativity to Innovation
Reaching New Magnitudes Through the Efficient Use of Parallel and
Distributed Systems
Integrated Optics in Lithium Niobate
Philosophy of Science
and Technology
Reflection on Science
and Technology
Thinking and Language
Networking Strategies
Associated
Workgroups
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Workgroup
Business Computing,
Business Computing
especially CIM
Customer A
Manufacturing
Level II
Customer B
Inventory Supplier I
Manufacturing
Level I
Inventory
Manufacturing
Level I
Inventory
Manufacturing I
Customer C
Inventory Supplier II
Capacity
Inventory Supplier III
Customer D
Inventory Supplier IV
Customer E
Producing Economically in Germany Tomorrow
Enterprises will still produce in Germany tomorrow, if production, procurement and selling processes meet highest
demands for effectiveness and efficiency. This development
comprises the increase in product quality as well as ever
shorter delivery and turn-around times. In this connection it
is necessary to develop innovative procedures which enable
enterprises to advance to a status possible today.
http://wwwhni.upb.de/cim/
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Guaranteeing the Competitive
Position for Tomorrow too
Our objective: Strengthening and guaranteeing the competitive position of an enterprise on a long-term basis. Therefore, the
specialized group deals with all technicaleconomic problems arising during the
design of customer-producer-supplier
networks and the realization of companyinternal and inter-company production and
logistics processes, which can be brought to
a solution by means of an innovative information technology.
Our thinking is process-oriented, i.e. orientation by the work production process.
The analysis of weak points, the testing of
solution approaches, the optimization of
separate processes, workflows and networks
can be managed with the help of our tools,
beginning with the conception of a work
production network up to the implementation of a logistics control system or an eCommerce solution. Especially for this reason our work was honoured with the German science prize for logistics. We develop
solutions offering decisive competitive
advantages.
More efficient working processes reduce
costs and at the same time bring higher
benefit for the customer. We are a solution
provider as well as a supplier of technology.
Our partners are in particular the industry
as well as service and logistics enterprises.
Against this background we are working on
the following focal points of research:
• supply chain management – optimization
of company-internal and inter-company
supply chains
• customer & sales management –
concepts and systems for customeroriented enterprises
• logistics for production and services –
consultation and solutions for the optimization of industrial business processes
21
Our teachings pursue the objective to show
the student coherences between goods and
procurement markets, the structure and
workflow of an organization, between product and production forms as well as the
principles of thinking in a system and the
realization of an innovative solution in the
fields of information technology.
Busch, A.;
Dangelmaier, W.:
Integriertes Supply
Chain Management.
Wiesbaden:
Gabler 2004.
Helmke, S.,
Dangelmaier, W.,
Uebel, M.:
Effektives Customer
Relationship
Management.
Wiesbaden:
Gabler 2003.
Dangelmaier, W.;
Kaschula, D.;
Neumann, J.(Hrgs.):
Supply-Chain-Management in der Automobil
und Zulieferindustrie.
Paderborn: ALB-HNIVerlagsschriftreihe 2004.
Dangelmaier, W.; Warnecke, H.-J.:
Fertigungslenkung. Planung
und Steuerung des Ablaufs der
diskreten Fertigung.
Berlin: Springer 1997.
Dangelmaier, W.: Fertigungsplanung.
Planung von Aufbau und Ablauf der
Fertigung – Grundlagen, Algorithmen
und Beispiele. 2. Auflage.
Dangelmaier, W.:
Produktion und Information,
System und Modell.
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Workgroup
OOpus SSPP: Strategic Location and
Production Planning
Example of a scenario tree
Supported by
HNI Graduate College
Contact:
Dipl.-Wirt. Inf. Clemens Kriesel
E-mail: kriesel@hni.upb.de
Phone: +49 (0) 5251|60 64 96
Fax: +49 (0) 5251|60 64 82
http://www.hni.upb.de/cim
OOpus SSPP is aiming to handle the uncertainties that exist because of the long-term
character of company location decisions. In
practice, a static view on location-problems
is often used. The result is a suboptimal faculty-network in the future. This should be
changed by the use of OOpus SSPP.
To get reliable results of the company
structure, one must regard the products,
which are produced at the locations in
alternative scenarios and the production
resources, which must be provided. Therefore the capacity planning task is
an essential part of the company structure planning.
OOpus SSPP is not only
about choosing one single
location, but regards the
whole company structure
and the possible structures, finally resulting in
opening or closing locations. That implies that
the production structures
must be planned, depending on the demand of
products. Not only locations
must be considered, the
transportation, storage and production facilities have to be dimensioned,
too.
Additional there is a scenario tree, similar to a decision tree, in which the possible
developments of the future are described.
With this tree alternative, the future can be
modelled and calculated, which is important to get a long term view to plan strategically.
The integrated capacity planning and
the assignment of areas to the production
structures are solved with mixed integer
programming and optimization. The costs of
production, transportation, storage, locations, and single areas are minimized; the
profit is to be maximized.
The selection of location structure alternatives (SSA) in one scenario is done by a
heuristic, which cuts down the solution set
and searches good alternatives within the
remaining solutions, specifically based on
rules.
Between the scenarios there are coordination processes to handle the scenario
tree.
Main components of the system are the
database, in which demand values and
results can be stored, the three layered optimization modules and interfaces for data
import and visualisation of the results.
The system does not only help to
choose, when and which new location
becomes necessary and so aiding with the
decision of the company development, but
it also proposes optimized capacities for all
production entities.
The insecurities of the future certainly
cannot be fully eliminated, but there are
developments, that can be shown. These
developments are weighted with probabilities and equipped with optimised capacities.
This helps with the decision, because the
effects of decisions can be validated against
alternative future developments and an
very good decision alternative is proposed.
System architecture
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d3 FACT insight
An immersive simulator of 3D material flow with
multi-user support
The design of manufacturing process
demands various technologies. Besides the
traditional technologies, simulation of
material flow and especially its visualization
come to the fore. Only the involvement of
three dimensional data can already enable
parallel design of layout and logistic workflow. The transport time, resulted from
changes of layout, can be identified directly; therefore expensive errors of design can
be eliminated. In a three dimensional world
users comprehend processes intuitively, so
that optimization potentialities can be discovered earlier than in a traditional way.
Though huge simulation models are
generally designed and carried out by
teams, however current software tools don’t
offer any supporting functionality for
multi-users. Another drawback is visualization quality for virtual reality scenarios,
which is hardly achieved by a lifelike
impression. In any case, operators or viewers
can not conduct any interaction with model
during a simulation experiment; therefore
they are definitely not integrated as an
autonomous object in the whole process.
With d3 FACT insight, the workgroup Business Computing, esp. CIM has developed a
new material flow simulator, which enables
the design and adeptness of simulation
models in a complete integrated 3D-environment. Since simulation projects are normally developed in a team, this system supports multi-users also both in modeling and
visualization sides.
Modular construction of system promises a simple integration of available data
into the whole system. Consistent storage
of data allows centralized administration of
all needed data for simulation and visualization.
User, an immersive component of the
system, will be recognized and considered
as an autonomous Object in 3D-visualization. During a simulation experiment, the
user can exert interactive influence. For
example, a parameter of a model component can be modified by a user during the
execution of a simulation experiment.
Thereby a more realistic impression to the
system is achieved without the system
operated in the reality.
The development of this simulator is
closely tied up actual research projects
(DFG-Project BAMSI) for the purpose of
applying actual achievements from the
research projects to the simulator development early. In order to be capable of integrating the continuous demands from the
practice into the system, the available prototype is verified and validated, parallel to
its further development in practical application by industry partners.
Modules of d3 FACT insight
Supported by
DFG program
“modeling of production”
NRW Graduate School
arvato logistics services
Contact:
Dipl.-Wirt. Inf. Christoph Laroque
E-mail: laro@hni.upb.de
Phone: +49 (0) 5251|60 64 25
Fax: +49 (0) 5251|60 64 82
Dipl.-Inform. Bengt Mueck
E-mail: mueck@hni.upb.de
Phone: +49 (0) 5251|60 64 50
Fax: +49 (0) 5251|60 64 82
M.Sc. Kiran Mahajan
E-mail: kiran@hni.upb.de
Phone: +49 (0) 5251|60 64 49
Fax: +49 (0) 5251|60 64 82
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Workgroup
Acceleration of processes and reduction of
errors by means of Augmented Picking
Prime costs of products are mainly caused
by accumulation of material flow costs and
logistics costs. Thereby the warehouse and
distribution logistics take a prominent position within the intra- and interplant material flow chain. Taking into account, that two
third of the entire costs of logistics of a
company are allotted to the warehouse, it
gets clear expeditiously, that these costs
definitive influence the company’s competitiveness.
Within the context of a cooperative
project between Siemens Logistics and
Assembly Systems (L & A), as the leader in
material handling automation, postal
automation and electronics assembly systems, and the workgroup Business Computing, esp. CIM, the worldwide first picking
application, supported by an Augmented
Reality-System, was originated at the Heinz
Nixdorf Institute.
View of a picker during the unloading of a storage compartment
Supported by
Siemens Dematic
Contact:
Dipl.-Inform. Werner Franke
E-mail: wfranke@hni.upb.de
Phone: +49 (0) 5251|60 69 13
Fax: +49 (0) 5251|60 64 82
Reasons for productivity loses during
picking activities, which persecute the principle “men to work” are typically founded in
suboptimal picking routes, delays for
searching the right goods or storage and
picking errors at the removal. The solution,
which was developed within the context of
this research project, is exactly focusing
these weak points.
The Augmented Reality system allows to
enhance the view on the real environment
by adding computer generated visual and
acoustical information and has to observe
and analyses the environment or the chosen focus of the user. This solution enables
a support of the picking personal and – as a
result of it – reduces the error risk and
times of commission significantly. For that,
the picking person is equipped with a
miniature camera, video glasses and a radio
keyboard, which is fixed to his wrist. Similar
to the Voice Picking method, both hands are
free for picking goods.
The actual pick list, written information
of articles for the current pick position as
well as a photo of the article are extrapolates and insert into the picture, which is
projected onto the video glasses. This
reduces the risk of drawing wrong articles
and helps to recognize incorrect stored
items
As soon as a store-base, which is labeled
with an Augmented Reality tag, appears in
the field of view for the current pickingposition, it will be emphasized by a colored
bordering and a hint tone. This enables a
faster and reliable identification of the
stock ground and leads to a reduction of
picking times and an increasing of process
reliability. After taking goods, the picking
person confirms the taken amount or feeds
corrections into the system by using the
wrist keyboard. Afterwards the picking person goes to the next position or takes the
collected items to a collection point. As an
aid to orientation it’s possible for the picking person to insert a sketch of the warehouse, which shows the last and next position. This event is dynamical to the dealing
of the pick list.
The possibilities of using the Augmented
Reality in the context of the picking are
nearly unchanged transferable to other
business processes. Thus, the track optimized navigation, the Augmented Reality
supported stock ground finding, the compartment and product information are
applicable both for stock, remove or transfer processes and for physical inventory
counts. Similar Augmented Reality scenarios
are realizable for tasks within the goods
reception, goods issue, packing, quality control or warehouse administration.
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Program planning and production control
for engine manufacturers
Isolated solutions for each planning area,
a multitude of individual systems and personalized processes prevent transparency
and thus flexibility in current planning and
production. The software in project OOPUSVW is developed to integrate planning and
production control in engine manufacturing plants of the Volkswagen AG in Chemnitz and Salzgitter. The goals of the project,
besides planning optimization, are to
enhance the transparency of processes, to
decrease inventory, to shorten throughput
time as well as to increase adherence to
delivery dates.
Being interlinked in various ways, lines
of consecutive production stages are of
special significance. Besides directly connected lines, that serve a concurrent production, there are succeeding production
stages that are decoupled by buffers. At the
same time at every stage of production,
planed demands arise from both planning
of the following stages and from direct
needs of customers. Planning algorithm has
to flexibly be customizable to fit different
priority of diverse planning areas. In addition to the consolidation of various solutions from different planning areas, data
from diverse third-party systems has to in
an aggregated way be transparently presented and processed via a user interface
(UI). Therefore the system has to be so
generic, that it is customizable in special
needs of two different plants. Central components will be the new planning and controlling UIs. Planning on the basis of cumulated quantities allows a quick target-actual comparison, while manufacturing control
is based on a typical control station UI that
visualizes manufacturing process across all
production stages. Therefore problems in
production development can be rapidly
identified and various manual interventions
are also enabled to be carried out.
Having been embedded into the plants
system environment of the Volkswagen AG,
the system will be the central planning and
controlling component of the engine manufacturing plants in Salzgitter and Chemnitz. The primary challenge is the inconsistent system environment of both plants as
well as different degrees of manufacturing
complexity. In addition, numerous modules
will be designed to complement the system
for the functionality of conventional Management Information Systems (MIS), and to
enable flexible adaptation of the system to
changes in production and IT.
Furthermore the workgroup Business
Computing, esp. CIM supervises the implementation and conducts training for
employees of Volkswagen AG.
Supported by
Volkswagen AG
Contact:
Dipl.-Wirt. Ing. Daniel Kaschula
E-mail: kaschula@hni.upb.de
Phone: +49 (0) 5251|60 64 61
Fax: +49 (0) 5251|60 64 82
System integration in the existing architecture
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Workgroup
Reference model for After-Sales-Services
In many companies the process of AfterSales-Services is only counted as cost driver,
therefore it is accordingly much neglected.
However the consequential input of structured and goal-oriented After-Sales-Services could also guarantee even increase
business volume of offering company.
Hence having worked with many industry
partners, a reference model is developed
and serves companies as a ready-made
solution schema or general pattern to
describe business processes of After-SalesServices and enable efficient coverage of
business configuration problems in scope of
Best-Practice-Principles.
However the developed model plays
neither a role as a truth-teller in respect of
verification or validation of assertion, nor
an identifier or judger of facts. It constructs
a large area of possible (decisional) situations and supports coverage of practical
problem formations. For example in terms
Arrangement framework of the reference model
Supported by
NRW Graduate School
Contact:
Dipl.-Wirt.-Ing. Tobias Gajewski
E-mail: gajewski@hni.upb.de
Phone: +49 (0) 5251|60 64 89
Fax: +49 (0) 5251|60 64 82
of application field and adoption possibilities of Model, overhauling of a defective
agrarian apparatus (such as combine harvester) or the optimal installation location
of an amusing device is in a huge hall.
Starting basis and foundation of reference model set up an arrangement framework, which provides the structure of model
and demonstrates an orientation offer for
reference model users. The specifications of
attributes from the built arrangement
framework are classified in a further step
and their coherences are represented in
Unified Modeling Language (UML).
The arrangement framework is based on
an assumption, that focusing on each organization there is always a certain assignment, which serves a defined purpose and
pursuits a concrete goal. The goal of an
assignment is divided into a material and a
formal goal. The material goal is goods and
services, while the formal goal shows, for
example, company goal of profit maximization or of market leadership. A before-event
initiates actions, which can sequentially or
in parallel affect the assignment object or
comprehend the status of assignment
object. Each individual action can automated or customized execute and will be
sequencing delivered inside of a disposition
task. In consideration of the given material
and formal goals, the disposition task
deduces service jobs basing on results of
each individual action, if necessary as well
as more other actions. This process will run
iteratively till successful realization of the
assignment. In the end an after-event is
achieved, which contains e.g. invoice processing or documentations and then builds
up an interface for disposition task of next
assignment.
The described coherences were verified
in practice, and acknowledged application
of reference model as effective tool for orientation and respectively adjustment of
business processes of After-Sales-Services.
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E-Learning portal for logistics
The quality of business operations, especially in partially automated processes, depends
increasingly on the qualification of the
appointed employees. The applied systems
for production planning and control, concerning the cross-functional customer order
management, demand a holistic understanding of the logistic coherences for production task's fulfillment. For successful
working on a customized production order
the knowledge about dependence between
the process flows becomes a critical competition factor. The workgroup Business Computing, esp. CIM developed a logistics portal
for the company Knorr-Bremse für
Schienenfahrzeuge GmbH, which addresses
this problem efficiently.
Knorr-Bremse für Schienenfahrzeuge
GmbH's advantages at the current market
are the large flexibility in realization of customer's wishes and highest quality of its
products. The starting point for the decision
to develop the logistics portal is founded by
the strategic reorientation of the enterprise.
The goals of this reorientation are characterized by dealing with the individual customer's preferred date of delivery (increase
of deliverability), a high adherence to delivery dates and the ability for complete supply without increasing the internal stock,
without diminishing the two first strategic
positions in their meaning. One of the identified deficits for reaching these aims concerns the partially insufficient understanding of the employees for the logistic dependences between the departments from purchase to distribution during the customized
handling of order; this deficit is to be
erased in the context of a qualification
offensive. After a detailed identification of
the technical requirements, used methods
and tasks in distribution, manufacturing
and purchase, a training portal for logistics
processes was developed. This portal doesn't
only visualize and document the logistic
main processes; it also links the identified
roles with documents for handling and
training, that are necessary for the fulfillment of each task.
By means of the used technologies, the
requirements for user-friendly administration, multilingualness and the applicability
for different user groups can easily be
implemented. Additional, this innovative
solution differs from already available products by its generic structure. This enables it
to model any organization and process
structures, like the ones of profit-centers,
self-responsible companies, strategic partnerships in customer-distributor-networks
or virtual company associations efficiently
by means of time and resources and to link
it with content and appropriate electronic
resources.
User View of the logistic portal
Administration view of the logistic portal
Supported by
Knorr Bremse AG
Contact:
Dipl.-Wirt.-Ing. Andreas Emmrich
E-mail: emmrich@hni.upb.de
Phone: +49 (0) 5251|60 64 54
Fax: +49 (0) 5251|60 64 82
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Workgroup
28
Computer Integrated
Manufacturing
Recognizing and Exploiting Success Potentials of Tomorrow
Product and production process innovations are important
levers for ensuring prosperity and employment in the future.
Mechanical engineering and related areas, such as automotive industry, are playing a key role today. These sectors likewise demonstrate the relevant success potentials of the
future. It is essential to recognize these potentials early and
to exploit them on time.
http://wwwhni.upb.de/rip/
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Creating Products Today for the
market of Tomorrow
Information has become the fourth large
factor of production. The wide-scale use of
information and communication technology
not only leads to increases in productivity
but also to the creation of new products
and new markets.
Our general goal is to increase competitiveness of industrial companies in the
information age. With this in mind, we
develop methods and procedures on the
basis of a four-level structure.
• Scenario level: At this level we anticipate developments in markets and technologies in order to recognize opportunities early.
• Strategy level: At this level we develop business, product and technology
strategies in order to set the course of the
company’s business success of tomorrow.
• Process level: This level involves the
design of processes of services. In the
foreground is the process from the product idea to the successful product
launch. Therefore we offer a wide systematics for the development and the
production planning for mechatronic
products.
• System level: IT systems are deployed
at this level. These systems allow an efficient innovation management (productand production data management) as well
as the analysis and simulation of product
features and production processes (virtual
prototyping, virtual production).
Our spin-off UNITY AG is the first point
of contact when it comes to implementing
these services in practice. More than 120
employees are pleased to assist you
(http://www.unity.de).
The aim of our educational courses is to
give our students a comprehensive overview
of modern industrial companies, to highlight the success potentials of the future
and to illustrate ways of achieving these.
Our students get the competencies on
which it depends in the industry tomorrow.
Produktinnovation – A handbook for
the strategic planning and development
of products of tomorrow; Carl Hanser
Verlag 2001
Four-level model of forward-looking management of industrial companies
29
Szenario-Management – A handbook for
creating scenarios and their implementation in the management; Carl Hanser
Verlag 1996
Führung im Wandel – A handbook for
designing production processes of
tomorrow; Carl Hanser Verlag 1999
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30
WZM 20XX – Initiative for tomorrow’s machine tools
BMBF-Cooperative project on the subject “new machine tools for the production of tomorrow“
Rapid reaction alone is not enough
The mechanical engineering industry which
comprises mainly small and medium sized
companies especially stands out by agility,
i.e. by the ability to meet the demands of
the market flexibly and quickly. But facing
the increasing complexity of products and
the constantly rising dynamics of innovation, the ability to be present with the right
performance at the right time is not
enough. Companies have to develop more
strategic competence, i.e. to identify future
potentials and exploit them on time without giving up their typical agility.
• The guideline describes how coherent
images (scenarios) of future markets and
relevant business areas (competitors,
suppliers, technology, economy/politics/society) can be developed by using
the knowledge base.
The process of strategic planning, which
is displayed in the picture, is the scope of
action. For the addressed task we apply the
scenario technique. According to Kurt Sontheimer, the scenario technique is not used
to predict the future but to think it ahead.
Scenarios describe future situations of markets and business-environments into which
the own business has to be positioned. They
depend on a network of influence factors,
whereas for each influence factor more
than one possible development can be considered. A special benefit of the scenario
technique is that a group of leading managers can come to a conjoint assessment of
the future.
The knowledge base for experts
Scenario-based instrument for
strategic planning
Supported by
WZM 20XX
in the BMBF Program “Research for the
production of tomorrow”; project executing
organisation: Production and Manufacturing
Technologies (PFT).
Project Partner:
Fraunhofer Institut für Systemtechnik
und Innovationsforschung (ISI)
Verein Deutscher Werkzeugmaschinenfabriken e.V.
(VDW)
Contact:
Dipl.-Wirt.-Ing. Volker Binger
E-mail: Volker.Binger@hni.upb.de
Dipl.-Wirt.-Ing. Guido Stollt
E-mail: Guido.Stollt@hni.upb.de
Phone: +49 (0) 5251|60 62 64
Fax: +49 (0) 5251|60 62 68
Early identification of market and
technology developments
The machine tool industry is a very successful branch of the German engineering
industry. Internationally, it ranks on top.
To defend this leading position it is important to support a foresighted thinking. The
objective of the cooperative project WZM
20XX is the development of a scenariobased instrument for strategic planning.
This instrument consists of a knowledge
base and a guideline for a systematic prognosis of the development of markets and
business areas.
• The knowledge base includes technology
trends and extensively documented factors which have an influence on the
future business of the machine tool
industry.
The derivation of significant scenarios
demands the access to information. The
procurement of information is often timeconsuming and expensive. The knowledge
base allows a quick access to all relevant
information (influence factors, results from
Delphi-surveys, roadmaps etc.). Added with
company-specific information the knowledge base enables an efficient and wellfounded strategic planning. The actual status of the knowledge base can be retrieved
on the online communication platform of
the project (http://www.wzm-initiative.de).
Communication platform of the WZM-Initiative
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31
Integration of mechanics and electronics
BMBF-Cooperative project INERELA (Integrative development of spatial electronic assembly groups)
Many modern products of mechanical
engineering are characterized by close
interactions of mechanics and electronics.
The challenge in developing corresponding
devices is the spatial and functional integration. The main aim is a high density of
functions in small space. The interactions
between the electronic functionality and
the mechanical structure of the device have
to be identified and taken into account at
an early stage. Furthermore, aspects of
manufacturing have to be considered.
Within the joint project INERELA a
development environment has been
designed which supports to integrate the
development of spatial electronic devices
and the corresponding manufacturing systems. The environment consists of a development process, a specification technique
and a knowledge base.
Process model: The process model is a
guideline for the realisation of development
projects. It describes precisely the phases,
process steps and milestones which have to
be run through in the development process.
Specification technique: The newly developed specification technique allows specifying the solution concepts for the device
and the manufacturing process. It describes
the solution concepts comprehensibly for
all developers of the involved domains and
supports the communication of these
experts.
Knowledge base: The knowledge base
which has been developed in this project
contains comprehensive information about
physical effects, solution elements and basic
Simplified reference process for the development of areal electronical assambly groups
material as well as manufacturing processes
and plants.
For the development and manufacturing
of spatial electronic devices, the technology
MID (Molded Interconnect Devices) means
a high potential. The advantages compared
to conventional circuit boards are the possibility of a three-dimensional design of
circuit boards and the integration of
mechanical and electronical functions on a
small construction area. The high potential
of MID is made clear in the study “Chances
and barriers for the adoption of the technology MID”, which was released by the
Heinz Nixdorf Institute on behalf of the
“Research Association Molded Interconnect
Devices 3-D MID e.V.”
Opto-electronical connector system by
Harting Electro-Optics
Supported by
INERELA in the BMBF Program “Research for
the production of tomorrow”; project executing
organisation: Production and Manufacturing
Technologies (PFT)
Project Partner:
Prof. Feldmann, FAPS, Erlangen
Prof. Wallaschek, Heinz Nixdorf Institut, Paderborn
HARTING Electro-Optics GmbH & Co. KG, Espelkamp
Hella KG Hueck & Co., Paderborn
Hesse & Knipps GmbH, Paderborn
myview systems GmbH & Co. KG, Büren
Contact:
Dipl.-Wirt.-Ing. Jan Stefan Michels
E-mail: Jan.Stefan.Michels@hni.uni-paderborn.de
Dipl.-Wirt.-Ing. Thomas Peitz
E-mail: Thomas.Peitz@hni.upb.de
Integrative concept development of a product and production system (here: part of the connector)
Phone: +49 (0) 5251|60 62 62
Fax: +49 (0) 5251|60 62 68
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32
Development-Benchmark Mechatronic
A new method for performance evaluation and improvement of the
development of mechatronic systems
Is the product development fit
enough?
Development stages as consistent combinations
of the lever-characteristics from the areas of
action, Man, Organisation and Technique
For many companies, the product development efficiency is an outstanding success
factor. The increasing complexity of products, which is commonly expressed
through a close interaction of mechanics,
electronics and software engineering, the
high innovation dynamics and the new
options of information technology applications by design activities such as simulation,
virtual prototyping and digital plant, pose a
great challenge for product development.
As well, the product development has to be
enhanced to be up to date. But what is up
to date and in which reasonable steps can this be
achieved? Such questions
can be answered with the
guidance of our method
“Development-Benchmark”. This method is
based on a large number
of industrial and research
projects on performance
improvement of the product development.
Our Proceeding:
Contact:
Dipl.-Wirt.-Ing. Daniel Steffen
E-mail: Daniel.Steffen@hni.upb.de
Phone: +49 (0) 5251|60 62 61
Fax: +49 (0) 5251|60 62 68
Dipl.-Wirt.-Ing. Christoph Wenzelmann
E-mail: Christoph.Wenzelmann@hni.upb.de
Phone: +49 (0) 5251|60 62 65
Fax: +49 (0) 5251|60 62 68
The basic idea is the Capability Maturity
Model (CMM), which is widespread in software development. Our approach can be
customized to the needs of a certain company, i.e. the product development is supposed to achieve such a performance level,
which is essential for an accomplishment of
business goals. Exceeding this would mean
a dissipation of resources. The figure on the
right shows our proceeding: It is systematic
and comprehensible.
At the beginning, the goals of the
examined product development have to be
identified. They result from the business
strategy; in many cases they are already
stated in the Balanced Scorecard. The next
step is to determine the performance
improvement levers, which come from the
areas of action, Man, Organisation and
Technique. As there is a great amount of
possibilities to choose, it is important to
identify the key levers. For each lever, there
are different characteristics, quasi performance stages of the lever. It is comprehensible that in an interconnected system it is
Model of proceeding for the performance evaluation
and the improvement of product development
not possible to position all key levers on
maximum level at the same time, as this
would overextend the product development.
At this point, the development budget is
another limitation.
The main attraction of our method is
that we are able to find advantageous combinations of key levers – so called profiles
(left figure), by using consistency analysis.
Then the issue is to arrange these combinations in such a way on time axis, that a
rational and evolutionary approach results
which leads the development from the
actual situation to the target profile representing the “Best Practice”.
The Academy of Mechatronics:
For many years the Heinz Nixdorf Institute
is engaged in the education and training in
the field of Mechatronics. We were able to
use the made experiences to guide the
development of the new VDI-Guideline
2206 “Design methodology for mechatronic
systems”. The Academy of Mechatronics
(http://www.mechatronik-akademie.de) provides a modular advanced training for practitioners that combines theory and practice
and can be adjusted to specific company
requirements.
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ISILEIT
Integrative specification of distributed control systems in flexibly
automated manufacturing
Subject matter and purpose
Flexible manufacturing systems are complex
mechatronic systems. The software development is to be advanced along with the
hardware development (mechanics and
electronics). But the correctness of the software can only be verified, if the hardware is
set up first. The identification and elimination of software errors after the manufacturing system has been set up extends the
development process and increases costs.
The purpose of the ISILEIT project is to
develop an integrated method for the
design, the analysis and the validation of
distributed manufacturing control systems.
For this, relevant parts of the established
specification techniques UML and SDL have
been combined. To validate this method a
software tool was developed which supports all phases of the development process
for flexible manufacturing systems.
The gradual design of a manufacturing control system
At first, the topology of the flexible manufacturing system, especially the part of the
material flow system, is specified with a
graphical layout editor. From the specification of the topology a model of the material flow hardware and its behaviour is generated in an automatic transformation. The
descriptions of the material flow components are stored in a library and are used
for the transformation.
In the next phase the control software is
specified. The control software reads the
information via sensors, processes them and
influences the hardware by means of actuators. So, the software is specified on the
basis of hardware characteristics, i.e. actuators and sensors.
The specifications of hardware, hardware behaviour and software are formal
models. These models are the basis for
model-checking and an automated code
generation. Model-checking can be used to
verify, if a system can reach forbidden
states. The code generation provides executable code for the hardware model and
software model. So, the code for the hardware model simulates the hardware of the
manufacturing system and the generated
control software controls the simulation.
The advantage of this analysis and valida-
Application of augmented reality in the flexible manufacturing
system: Visualisation of various states during a turning operation of a switch (Computer-generated information: Statechart
of the control software, pneumatic cylinder and inductive proximity sensor)
tion is that software errors can be identified
and eliminated at an early stage without
the plant being actually set up.
Ramp-up with augmented reality
For the real manufacturing system the control software is generated, transmitted to
the control systems and executed. To support the ramp-up of the manufacturing
system, an augmented reality application
has been implemented, which displays the
interrelations within the active structure
driven by information processing in the real
system. The different states of the system
are visualised online and in real time. This
supports the elimination of the remaining
errors of the system.
This method accelerates the development of flexible manufacturing systems,
reduces the costs and increases the quality
of the results.
Topology specification of a flexible
material flow system by means of a
graphical layout editor (FASTEC GmbH)
Supported by
ISILEIT, German Research Association (DFG)
Project Partner:
Prof. Dr. Wilhelm Schäfer
Universität Paderborn
Contact:
Dipl.-Wirt.-Ing. Raimund Eckes
E-mail: Raimund.Eckes@hni.upb.de
Phone: +49 (0) 5251|60 62 43
Fax: +49 (0) 5251|60 62 68
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34
Mobile augmented reality experimental platform
Use of augmented reality for the examination of the vehicle ergonomics
Mobile augmented reality experimental platform
Supported by
AR-based Prototyping in the vehicle development
Project Partner:
Volkswagen Nutzfahrzeuge
Package and Concept Development
Prof. Dr.-Ing. H. Oehlschlaeger
Contact:
Dipl.-Ing. Rafael Radkowski
E-mail: Rafael.Radkowski@hni.upb.de
Phone: +49 (0) 5251|60 62 28
Fax: +49 (0) 5251|60 62 68
Task
Mobile AR-experimental platform
Today, high-quality vehicle ergonomics represent an essential factor for the success of
a vehicle model. For the interpretation and
check of the ergonomics a variety of methods and tools is available. Furthermore, the
subjective sensation of the driver plays an
important role so that examinations are
inevitable to a real prototype. Today, these
are carried out at real 1:1 models, so-called
“seat box” (a model of the interior of an
automobile). The construction or customisation of a real seat box is time-intensive and
expensive. An alternative is the construction
of a virtual seat box by using the technology virtual reality (VR). On the basis of 3DCAD data of the new vehicle the construction of virtual seat boxes is faster and more
competitive.
In cooperation with VOLKSWAGEN NUTZFAHRZEUGE a mobile augmented reality
experimental platform will be developed,
which combines the advantages of real and
virtual prototypes to a mixed prototyping
(see picture). Basis of this platform is a real
vehicle without interior equipment, pillars
and roof. Roofs are replaced by newly
developed virtual components, which the
user can see by a 3D head-mounted-display.
The virtual components will be generated
from the 3D CAD data available. By means
of an ultrasonic tracking system position,
perspective and movements of the driver
will be recorded constantly. By these data,
the correct position and size of the virtual
components will be calculated in real time.
The use of a real vehicle, as a basis of the
AR experimental platform,
permits, in addition to stationary examinations, real
test runs with new vehicle
components that are still in
planning.
So, the sight conditions
out of the vehicle can be
examined and optimised in
due time.
Driver’s view of the augmented console
The application is stationary in a laboratory;
a real test run in real surroundings can only
be adapted by 3D simulation. The technology augmented reality (AR) offers new possibilities. AR is a new form of interaction
between man and technology. Here, the
user will be shown computer-generated
information like 3D models, drawings or
texts (see picture) by a head-mounted-display. The injection of the information
always happens contextually so, e.g. a virtual tool is displayed at the real screws
depending on the respective position and
the perspective of the viewer. AR also permits to replace real vehicle components by
displayed virtual components. This enables a
competitive mixed prototyping of real and
virtual vehicle components.
AR-scenario: The repair instructions are shown
to the worker
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VR/AR at education and training
“A visit inside a computer” explains, how a computer and the Internet work
Visualisation of a real computer
Visualisation of a main board
Change the e-mail in the In/Out in the
Von-Neumann-model
Storing the e-mail in the working
memory in the Von-Neumann-model
How are data processed in the computer
actually? Why can a computer calculate so
fast? What happens in the tiny processor?
And how works the Internet? These and
many other questions are answered by the
project “a visit inside a computer” in a new
and understandable way. The technologies
Virtual Reality (VR) and Augmented Reality
(AR) make this possible.
The e-mail is the thread through the
exhibit. The visitor is asked to write an email, to send it and to observe it up to the
receiver. On this journey he learns how a
computer and the Internet work.
Essential parts of the exhibit
There is a basic requirement to be able to
send an e-mail: an operating computer. First
of all, the visitor configures a computer in
the AR laboratory. Which components do
I have to use? Where do they have to be
installed and how do I have to proceed? A
new interaction device supports the visitor:
the VARI. If he looks on the monitor of the
VARI, he sees the individual components
lying in front of him, like looking through a
window. By augmented reality the visitor
sees in real space computer-generated
information, such as figures, texts, videos.
So, it is possible to configure the computer
and to learn more about the components
without previous knowledge.
Now the computer is configured. At the
computer workstation the e-mail can be
The Internet in
the overview
Information
inquiry
Workstation computer networks – The visitor can see a
virtual globe, which is embraced by a stylised Internet.
Here, the stations from sender to recipient of an e-mail are
visualised.
Computer work station – The visitor sees a virtual computer. Diving into the computer,
he reaches the Von-Neumann-model via the main board.
written and sent. The visitor dives into a
virtual computer, reaches into the inside of
the computer and thus to the so-called
main board. The main board consists of
all essential components: the
processor, the main storage, the
graphics card, etc. But the
data, which are processed in
the computer, aren't visible
here. For this reason an
abstraction level was chosen, the Von-Neumannmodel. From the VonNeumann-level the visitor is able
to explore independently, how the email will be converted in the In/Out to bytes
and then, how it will be processed in the
components register array, control unit and
arithmetic logic unit.
Now the e-mail is processed in the
computer and can be sent via Internet. At
the workstation computer network the
visitor can see a virtual globe, which is
embraced by a stylised Internet. It is possible to follow the way of the e-mail and
explore which stations are passed by e.g.
mail server, firewall or router in order to
reach the recipient.
VARI: New interaction
equipment for VR and
AR surroundings.
Supported by
BIC: Stiftung Westfalen
Project Partner:
Heinz Nixdorf MuseumsForum, Paderborn
Festo Corporate Design, Esslingen
Contact:
Dipl.-Wirt.-Ing. Ute Brüseke
E-mail: Ute.Brueseke@hni.upb.de
Dipl.-Ing. Raphael Wortmann
E-mail: Raphael.Wortmann@hni.upb.de
Phone: +49 (0) 5251|60 62 27
Fax: +49 (0) 5251|60 62 68
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Workgroup
Cooperative Knowledge Organization – Orientation in Diversity
With the universal accessibility of the Internet, IT technology
is brought to a new quality: Instead of allowing only entwined
one-way communication – as it has been typical for traditional media – now objects and knowledge assets can be created
and edited cooperatively. Along with this development, new
forms of knowledge accumulation (the Wikipedia, e.g.) and
publicly funded initiatives have been established to guarantee
that knowledge is open to the public (such as Open Access).
The research group Computers and Society contributes to
these new developments with concepts, new technologies
and their theoretical foundations.
http://iug.uni-paderborn.de/
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With the increasing presence of networks
and mobility rendered possible by IT technologies, matters of contextualisation of
computer systems and the development
of orientational knowledge in an ever more
complex world of information come to
the fore. This trend conforms to the orientation of the research areas Computers
and Society:
– theoretically by specifying of fundamental concepts such as interaction and
media functions that prove necessary for
the description of the characteristic usage
qualities of Wikis, WebLogs or virtual
knowledge spaces;
– conceptually by extending classical clientserver architectures with aspects of
mobile ad-hoc networks; here, research
on trans-server object identity and the
synchronisation of distributed virtual
knowledge spaces are in the focus;
– technically by an ongoing development of
the opensTeam platform, which is now
being used at several universities and also
forms the technical foundation for the
University of Paderborn’s and the University of Qingdao’s joint study programme
in mechanical engineering.
37
During the last year, several perennial
projects were completed. Among these were
“Lernstatt Paderborn”, an infrastructural
project unique in size and functionality on a
European scale. This venture was based on
experiences made in the HNI’s DISCO (digital infrastructure for computer supported
co-operative learning). A co-operation and
communication platform that was developed by our group within the regional educational network bid-owl was integrated
into Lernstatt. This undertaking was funded
in part by the City of Paderborn’s
Förderverein.
Another project successfully completed
was “QuIC – Qualification in Internet Cafés
at schools” in co-operation with the local
Goerdeler Gymnasium and the initiative
“SaN Schulen ans Netz”. The approach
developed here – to remunerate mothers
for supervising the Internet Cafés in the
afternoons by training them in computer
literacy – has now been transferred to other
schools across Germany.
The combination of theoretical and conceptual works with the development of technical systems and their use under every-day
constraints is a unique characteristic of the
workgroup in German speaking countries.
Thus, our expertise is in great demand. E.g.,
Prof. Keil-Slawik was appointed scientific
director of the Education Quality Forum
NRW in 2004 and speaker of the expert
group on technology of the CeC (Center for
eCompetence in Universities NRW). Together with Jun. Prof. Thorsten Hampel he was
appointed consultant of the technological
division of the Virtual University of Bavaria.
Conference Proceedings
“Mensch & Computer 2004”
We were also able to develop further
other regional projects (e.g., bid-owl)
and start new co-operations. Among
these are the corporate networks
“InnoZent OWL”, based in Paderborn,
and “Maschinenbau OWL” (Mechanical
Engineering OWL) based in Bielefeld.
Together with these networks, a regional
platform for cross-company co-operative knowledge management will be
developed.
In a co-operation with Prof. Joachim
Ludwig of the University of Potsdam a
transdisciplinary discourse on pedagogics and computer science was initiated.
This enterprise has been funded by the
“DIE – Deutsches Institut für Erwachsenenbildung” in Frankfurt/Main. As a
result of the first successful workshop
in Potsdam, it was decided to found an
interdisciplinary research group on
“Educational Spaces – Virtual Knowledge Spaces” within the DFG. A further
workshop to be held in Paderborn is
planned.
One of the highlights in our core
research areas of software ergonomics
and e-learning were the organisation
of the multidisciplinary conference
“Mensch & Computer 2004” together
with “Deutsche eLearning Fachtagung”,
under the scientific management of
Prof. Engels, Prof. Keil-Slawik, and Prof.
Szwillus in Paderborn. With more than
four hundred participants, this was so
far the largest conference in German
speaking countries on these topics –
a remarkable success for the HNI and
Paderborn’s Institute of Computer
Science.
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Workgroup
sTeam – “Structuring Information in a Team”
Novel methods and technologies for the cooperative organisation of knowledge
Support of young scientists in founding spin-off
companies
The sTeam system was tailored in appearance and
functionality to comply with special requirements
of the DELIS project
Open SMT using sTeam as Backend
Contact:
Jun.-Prof. Dr. rer. nat. Thorsten Hampel
E-mail: hampel@upb.de
Phone: +49 (0) 5251|60 65 22
Fax: +49 (0) 5251|60 64 14
http://www.open-steam.org
A year after the end of active support from
the DFN association, Paderborn’s open
source project sTeam has made substantial
progress. Major results are the development
of new supervision models in vocational
and advanced training, like the Jour-Fixe
Concept and necessary tools for spatial
semantic structuring of knowledge, the
extension of the user adaptability, especially in the integration of new program interfaces and technologies, the adding of modern web content capabilities and the gradual integration of available industrial standards, particularly in the field of the decentralised user administration.
Due to “transsib”, a very stable server
version that was introduced in spring 2004
at the CeBit fair, we were able to intensify
accompanying application contexts and
attract numerous new users through the
last couple of years. Here, the creation of a
simple high-performance appearance on
the user’s side as a key technology turned
out to be a substantial benefit. In this manner, the system offers synergies of web
content management and other possibilities of high-capacity cooperation supporting tools of E-Learning, based on publicly
available PHP or XSLT stylesheet technologies.
In Paderborn, sTeam is intensely used by
the Department of Computer Science and a
couple of institutes of the Faculty of
Mechanical Engineering for web presence,
internal cooperation and the exchange of
documents. The platform has also proved to
be useful for students in the area of organisation, and free and open arrangement of
their practical trainings. sTeam is also used
in the university’s didactics group and to a
great extent in the media studies faculty,
e.g. in the course “media pedagogical
aspects of E-Learning”. In this context, the
university didactics offer own courses concerning the utilisation of sTeam.
The centre of transfer of the University
of Paderborn, uses adjusted sTeam technologies in the project EXaM, to support
young scientists in founding spin-off companies.
The EU project “Dynamically Evolving
Large-scale Information Systems (DELIS)”
coordinates 19 European partners via the
platform, where novel mechanisms for the
structuring of operations during the creation of documents are developed and tested.
At the University of Siegen, parts of the
humanities and department of cultural
studies intensely use sTeam to support different teaching methods, partly in international cooperation contexts.
Like the faculty of Information Systems
at the University of Essen, the Decision
Support & Operations Research Lab of
Information Systems in Paderborn operates
its own sTeam servers since this autumn. In
cooperation with several universities, the
teaching management system Open SMT,
has been ported to open source sTeam
technology.
In autumn 2004, the realisation of the
bid-owl platform – based on sTeam – was
finished to a large extent. Bid-owl is an
effective and conferrable working and
communication forum for schools on a
regional basis. Through the expansion of
the infrastructure within a school, a permanent availability of digital materials, its utilisation, spreading and cooperative processing is achieved.
The majority of examples shows, that
the aim to develop and enlarge sTeam as a
framework architecture and “building set”
for the development of collaborative systems for cooperative knowledge organisation and E-Learning, from the support of
sophisticated processes of cooperative
working up to a web based content management, has been widely honoured.
bid-owl offers access to learning materials over PHP
and displays complex administration structures
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Zhengqi (
39
) in the land of the dragon
Since 1995 a close relationship in research
and education has come into existence
between the Qingdao University of Science
and Technology (QUST) in Qingdao/ China
and the University of Paderborn. This cooperation, especially in the field of mechanical engineering, led to the foundation of
the Chinese German Technical faculty
(CDTF) under the leadership of Prof. Manfred Pahl and Prof. Qingling Li. Today, about
300 students are enrolled within the CDTF
according to the German curriculum, in
order to achieve the Bachelor degree in
mechanical engineering. During the studies,
these students participate in German language classes and after the successful
graduation of the TestDaF (Test for German
as a foreign language), they come to
Paderborn for a couple of semesters to
attend -among other things- a practical
training in a German company.
This cooperation over a distance of
12000 kilometres, brings along substantial
problems and tasks in managing infrastructure and organisation. A multitude of
actors has to be coordinated, teaching
material must be administered and communication problems have to be solved in
this corporate teaching environment and
interactive exchange of lecturers and students. As multifaceted as the tasks that
have to be solved, is the potential of support from the cooperation with methods
and systems of the common organisation
of knowledge. To solve this, the faculty of
mechanical engineering and the faculty of
Computer Science developed novel concepts and solutions.
Documents in different languages have
to be administered in Chinese and German,
a common user- and group administration
between Paderborn and Qingdao has to be
established to transport and structure necessary information. One of the most important and most challenging requirements to
a transcontinental and intercultural form
of common teaching and research, is the
consideration of differences in learning due
to the different cultures. This does not lead
to the question if Chinese students study in
a different manner than German students,
but how a conceptual and architectural
basis can be found, that helps to support
different didactic models starting from the
supervision of plain remote-lectures to
forms of Blended Learning, up to support
of presence-lecture in a research and
learning environment.
In spring of 2004 Thorsten Hampel
from the Heinz Nixdorf Institute and Ferdinand Ferber, from the faculty of mechanical engineering, were already able to present a first concept called “zhengqi” (
)
in Qingdao. This concept supports the
cooperation based on virtual knowledgespaces. Xu Li Xun, an E-Learning agent of
CDTF, visited the work group computers
and society and cooperative medias in
Paderborn this august, to advance and
realise the aim of the concept. The central
challenge within this task was to efficiently
bring Chinese and German learning contents together in the virtual knowledge
spaces. With the following visitation of
Daniel Büse, collaborator of the HNI and
the faculty of mechanical engineering, in
September 2004, it was possible to setup a
first sTeam based collaborative server and
to integrate the server in the infrastructure
network of the CDTF. With the decision of
the CDTF curatorship, to focus on sTeambased solutions for cooperation, communication, and as common information space,
experts and working groups from Paderborn and Qingdao will be intensely working
together in the next several months.
Thorsten Hampel and Ferdinand Ferber present the
E-Learning concept for the CDTF to the Chinese
delegation
Documents, written in Chinese and German
language, in a common virtual knowledge-space
Supported by
DAAD, Fakultät für Maschinenbau
The CDTF E-Learning Server in Qingdao is opened to
the public by Daniel Büse and Xu Li Xun
Contact:
Jun.-Prof. Dr. rer. nat. Thorsten Hampel
E-mail: hampel@upb.de
Phone: +49 (0) 5251|60 65 22
Fax: +49 (0) 5251|60 64 14
http://mb-s1.upb.de/steam-cdtf/
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Workgroup
Lernstatt Paderborn
All Schools Under a Single Roof
Over the course of three years, the city
of Paderborn has installed a city-wide
sustainable infrastructure to support the
use of digital media in all schools. This
process was completed at the beginning
of the school year 2004/2005. The main
goal was to support all forms of individual and cooperative forms of learning
within schools as well as outside schools
rather than virtualising education and
replacing existing forms of learning by
individual learning processes.
To that end, an infrastructure had to
be developed that allows ubiquitous
access to digital media without imposing tasks of administration and maintenance on teachers or learners. The project thus focussed on supporting local
and regional cooperative forms of learning, enhancing and supplementing them
with national and international
resources by integrating the Internet.
Based on the concept Sun@School
and the goals of the e-nitiative.nrw,
more than 1800 clients and some 100
servers were installed in local schools.
Workstations have been connected via a
network not only within the schools, but
also between the schools. Working in
the net thus allows the use of digital
media during the lessons as well as at
home.
Administration and maintenance are
among the tasks of the communal com-
puting centre (GKD Paderborn) in order to
relieve teachers from those tasks. The GKD
is responsible for running the network connecting the schools which is built on Paderborn’s educational network (PBBN) providing a broadband connection via the city’s
traffic light control network. The network
within the schools extends the connection
to all class rooms where low-maintenance
ultra-thin clients are at the hands of pupils
and teachers. The configuration within the
class rooms was designed according to the
e-nitiative.nrw’s recommendations for the
equipment of class rooms with so-called
media corners. Computer class rooms in
secondary schools complement this equipment.
The realisation was coordinated by a
project group consisting of members from
the City of Paderborn, the GKD, local
schools and teachers, the Regional Commission Detmold, the University of Paderborn,
and Sun Microsystems. Thus, it was possible
to adequately account for the concerns and
requirements of the different partners.
Additional working groups were installed
for special pedagogical and technical questions.
Among the tasks taken over by the
Heinz Nixdorf Institute’s research group
Computers and Society is also the development of the project’s cooperation platform
“School Wide Web Paderborn” (sww-pb)
where pupils as well as teachers obtain their
own accounts, together with personal virtual knowledge areas. This platform is based
on the “bid-owl” server which has been
developed in cooperation with the Regional
Commission Detmold, the Weidmüller Foundation and the Gütersloh City Foundation.
One major application of this platform was
in an additional project called “School Wide
Web – Intranets in Schools”. In this project,
carried out by the Bertelsmann Foundation
and the Heinz Nixdorf Foundation, recommendations were devised for the development of knowledge management in schools,
together with methods for a continuing
training of teachers in the use of digital
media. Also, the research group Computers
and Society further developed and evaluated the “StarOffice 4 Kids” concept. In this
solution, according to its motto “The world
is my school bag”, tools and material are
directly supplied via a browser to the users
tailored to their age and abilities.
Thus, as of summer 2004, all of Paderborn’s schools have an efficient and at the
same time easily maintainable infrastructure at their disposal. Teachers and pupils
have been trained extensively to not only
technically handle the equipment but also
to use it effectively in teaching and learning. By guaranteeing ubiquitous access to
the school’s network, the intranet and the
Internet, schools as learning places are
being extended: The city becomes a place of
learning.
Supported by
StarOffice Software Entwicklung GmbH/kippdata
Informationstechnologie GmbH
Sun Microsystems
Contact:
Dipl.-Math. Harald Selke
E-mail: hase@upb.de
Phone: +49 (0) 5251|60 64 13
Fax: +49 (0) 5251|60 64 14
http://www.lspb.de/
Computers are an every-day medium in the Lernstatt Paderborn
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QuIC – Qualification in Internet Cafés
at Schools
The main objective of the project was to
support the usage of communication technology and new media at school after
lessons. A number of new usage scenarios
of internet technology has been elaborated.
Another aim was to identify the problems
of an open and sustainable usage of IT
infrastructures at school. The QuIC
approach: an internet café is opened after
lessons in the afternoon and parents, especially mothers, take care of the internet
café; it is recommended to the parents to
participate in qualification modules in
return.
The open usage of information technology is available at lessons as well as in the
afternoon for individual work and exercises.
The individual usage is guaranteed independent of the student’s access to media at
home. This is the reason for the strong support of opening an internet-café at school
among students, parents and teachers. One
aim is to particularly encourage girls and
mothers to study modern information technologies and build up technological competences. In the focus of the project are also
student’s mothers who frequently feel
uncertain in their media skills. For many
women missing skills in information technology are an obstacle when trying to
return to a job after a career break (which
has been spent for the family). The qualification modules that have been identified
and implemented in the QuIC project are
adjusted especially to these women with
career breaks. The aim is to keep the
entrance barrier as low as possible and to
create a group of like-minded women who
enjoy learning together. Qualification is
given in return to engagement for their
children’s school.
Internet Café at Goerdeler-Gymnasium Paderborn
Students from 10th grade on are integrated into the project as well. Girls are prepared to take the role of multipliers in the
project. The multipliers are educated to
qualify new mothers and to maintain the
internet-café working in the long term.
The pilot scheme was implemented over
3 terms of 6 months each. Several qualification scenarios were tested. In the first
term, mothers and schoolgirls were prepared together. The mothers were qualified
for the task as tutors, girls were qualified
for the task as multipliers and mentors as
well. Because of the different experience in
information technology and different speed
in adapting, we decided to prepare each
group separately for its given task. Another
reason was that the students need a specific preparation to take an active part as
mentor. The student’s preparation includes
the development of social skills for the
mentoring process.
During the project it became obvious,
that the requirements of the school towards
the students change essentially from the
10th to the 11th grade as well as from the
11th to the 12th grade. Thus, it is quite difficult to find girls who participate for at
least 2 years in a row to be trained as mentor.
Teachers have been revealed as a bottleneck in this and similar projects. The fact
that the teacher, who is responsible for a
system administration in a school is also
made responsible for all projects that deal
with information technology leads to workoverload of this particular individual.
The internet platform LeaNet serves as
an exchange medium for dates and for
schedules as well as for an exchange of
learning documents. The internet forum
was used intensively by the teacher to give
advice to the participants. LeaNet is the
internet platform provided for women who
work in education by “Schulen ans Netz
e.V.”. It is accessible at school as well as at
home and serves as an access platform to
important information for the participants
independent of the working place.
Mothers agree to participate in the project for a period of 6 months. Experience
proves the 6 month period as a reasonable
interval for planning and commitment.
Several women who participated for 2 or
3 terms emphasised the commitment to
their children’s school as their main
motivation.
The modular qualification concept
was developed by HNI in cooperation
with “Schulen ans Netz e.V.”. In further
practice, qualification of the women
who take a role as advisor in the internet-café will not be performed by students but by parents. A group of parents
with specific skills agreed to participate
as multipliers on the base of the existing
qualification concept.
Several similar projects in different
places have been inspired by the positive turnout in Paderborn and the transfer activities of “Schulen ans Netz e. V.”.
Project members: Udo Hilwerling, Dr. Wortmann
(Goerdeler-Gymnasium), Regina Eichen (Schulen
ans Netz e. V.), Prof. Dr.-Ing. Reinhard Keil-Slawik,
Aylagül Özel, Christiana Nolte
Supported by
Schulen ans Netz e.V.
Goerdeler-Gymnasium Paderborn
Initiative “Frauen gestalten die
Informationsgesellschaft”
Contact:
Christiana Nolte
E-mail: cnolte@uni-paderborn.de
Phone: +49 (0) 5251|60 64 10
Fax: +49 (0) 5251|60 64 14
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Workgroup
Algorithms and
Complexity
High Performance =
Innovative Computer Systems + Efficient Algorithms
High computing performance can only be achieved by a combination of powerful computer systems and algorithms that
solve the given application problems as efficiently as possible.
Therefore, the development of efficient algorithms has established itself as a classical branch of computer science. In our
research area, we concentrate on solutions where current technological possibilities such as high performance computer networks, mobile wireless communication networks, or systems
supported by specialized hardware pose new challenges for
algorithm development.
http://wwwhni.upb.de/alg
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Focus in Research
Modern computer systems enable expanding application areas in many respects: Parallel computer networks can deal with
extremely complex algorithmic problems;
the Internet realizes global exchange of
information and the interconnected computers may possibly serve as one giant parallel computing device; wireless communication systems allow flexible communication between mobile stations; hardware
support for graphics applications enables
real-time navigation in complex virtual
scenes. A special challenge is given by computing systems consisting of heterogeneous
components (e.g. differently powerful
processors, storage devices or communication capabilities) with structural changes
over time. The algorithmic challenges
imposed by the realisation and efficient
usage of such heterogeneous, dynamic systems are in the focus of our research.
Parallel computer networks can potentially supply unlimited computing power.
However, the efficient use of these networks is an extremely complex problem. We
provide users with a programming environment, the PUB-library, which is easy to handle and guides them towards the development of efficient algorithms. In order to
realize such an environment, efficient
implementations of basic routines for communication and synchronization are needed.
Meanwhile, our PUB-library is used by an
international community of developers, who
appreciate such an efficient and comfortable environment for parallel computing.
The latest extension of the PUB-library
takes into account the special problems of
heterogeneous local area networks (LAN).
Thereby it uses the “idle time” of connected
computers within a LAN efficiently. With
our theoretical results and the extensions of
this library for a scenario of concurrent
applications we make a first move towards
Grid Computing.
43
Dynamic networks, i.e., networks whose
nodes change their (geometric, geographic)
position over time, play a major role in
many areas: They can, e.g., be used as data
structures for moving objects in Computer
Graphics or as models for wireless mobile
communication networks. We systematically
model various kinds of dynamic networks,
design appropriate algorithms, and apply
them to the above mentioned problems in
Computer Graphics and communication.
The algorithmic work described above
has shown us that using randomized procedures can produce amazing gains in efficiency. Therefore we systematically study
the potential of randomized algorithms and
develop or apply methods from probability
theory for analyzing them.
To be able to navigate in a virtual
3-dimensional space and to give a realistic
optical impression of the changing scene,
enormous demands are imposed on the
underlying data structures that handle the
scene and facilitate the rendering of the
individual pictures. Above all, we have to
meet real-time restrictions in order to guarantee a realistic impression of the scene.
Our work on the development of novel data
structures led to new approaches to realize
rendering of very large scenes in real time
on computer networks.
Our research is closely linked to our
teaching. Our courses cover methods and
concepts of the development and analysis
of efficient algorithms. We also run project
groups and support diploma theses that
apply our theoretical insights in order to
design efficient algorithms and libraries.
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Workgroup
Dynamic and Heterogeneous Networks
Wireless Networks
Wireless networks replace the present
wired networks. The extensive infrastructure for providing communication
becomes obsolete and the new freedom
of movement will fundamentally change
the future working and recreational
behavior. In this area we investigate
algorithms, models, and general properties of Mobile Ad Hoc Networks
(MANET) and sensor networks using
mathematical and experimental analyses, and building prototypes.
We investigate mobile ad hoc networks
(MANETs). These wireless decentral networks
provide no fixed infra-structure and allow
participants to move freely. For data transmission participants spontaneously connect
to each other. So, central parts are obsolete.
Increasing density can be utilized to
improve the communication network by
increasing network availability, throughput,
and energy consumption by adapting the
transmission energy.
hardware. Besides algorithms for topology
control and network routing we implement
and investigate medium access strategies in
SAHNE.
Heterogeneous Wireless Networks
Mobile Ad Hoc Networks
Usually wireless networks are based on
centralized structures. Without some
dedicated central stations the network
is not available. Typically in such centralized networks the network performance decreases when the density
increases, particularly the data throughput.
PaMANet (Paderborn Mobile
Ad Hoc Network) creates networks
structures for a mobile highway scenario
Supported by
DELIS and SFB-376 C6
Contact:
PD Dr. rer. nat. Christian Schindelhauer
E-mail: schindel@upb.de
Phone: +49 (0) 5251|60 66 92
Fax: +49 (0) 5251|60 64 82
http://wwwcs.upb.de/cs/schindel.html
Dipl.-Inform. Klaus Volbert
E-mail: kvolbert@upb.de
Phone: +49 (0) 5251|60 67 22
Fax: +49 (0) 5251|60 64 82
http://wwwcs.upb.de/cs/kv.html
Heterogeneity influences wireless networks
very much. This regards the wireless medium as well as the computing resources of
the participants. Finding algorithmic solutions for heterogeneous networks is a current research focus in this area of MANETs.
This research deals with a broad range of
hardware: starting with micro-controllers,
carrying on with mini-robots with systemon-chip technology, ranging up to W-LAN
networks on laptop PCs.
We develop network prototypes in several cooperations. Together with the working group System and Circuit Technology
(Prof. Ulrich Rückert) we work within the
framework of the SFB 376 (DFG special
research cluster) “Massively Parallel Computing”, partial project “Mobile Ad Hoc Networks”. Here, the network prototype is
implemented on mini-robots “Khepera”. Furthermore, we develop network protocols for
especially designed sensors of the working
group Sensor Technology (Prof. Ulrich Hilleringmann) funded by the research award
2004 of the University Paderborn. In another cooperation we develop the routing protocol PAMANET (Paderborn MANET) for WLAN and TCP/IPv6 in cooperation with the
working group Design of Parallel Systems
(Prof. Franz Rammig) and the working
group Databases und E-Commerce (Prof.
Stefan Böttcher).
Experimental Investigations
Physical effects of wireless data transmission are investigated using the simulation
environment SAHNE. In this simulation
environment we study the layers of radio
and infrared based networks close to the
Simulation of an ad hoc network by SAHNE creating a
spanner topology
Locality, Dynamics and Mobility
In wireless networks the local neighborhood
influences the network quality. Geometric
spanner graphs provide a good basic network topology for the approximation of
time and energy optimal routing algorithms.
In this context we extended the notion
of spanner-graphs to weak and powerspanners and presented relationship
between these graph families. We can prove
that every spanner is also a weak spanner
while every weak spanner also provides
power spanner properties. The inverse, however, is not true in general. As an application of these theoretical insights we achieve
energy efficient MANETs for directed communication, which we prototypically implemented in cooperation with the working
group System and Circuit Technology.
Dynamics and mobility of network
nodes and edges can degrade the network
quality. Participants of the network can
suddenly appear, change their position and
then disappear. We developed various
methods to cope with these dynamics analyzed in a worst-case mobility model. These
methods are implemented in PAMANET, the
Paderborn Mobile Ad Hoc Network.
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Dynamic and Heterogeneous Networks
Resource management
Modern computer networks offer their
users tremendous shared storage capacities
and computing performance. To use these
resources efficiently, we are heading for
strategies for the migration of documents
and tasks as well as for methods for the
balanced placement of data. Hence, we are
focussing on heterogeneous properties concerning computational power and storage
capacities within those networks.
Page Migration in Dynamic
Networks
In wireless networks it is usually the case
that the participants want to access shared
documents or even whole databases
belonging to other participants. This is
achieved by copying the data to the local
memory of the participant. For this problem
we developed dynamic re-allocation strategies, which migrate data between nodes
upon request sequences issued by the participants. The goal is to minimize the distance between frequently accessed data
and the nodes which requested it. Such
placement decreases the communication
cost within the network. Additionally, our
strategy reacts to the changes in the network topology, caused by movement of
nodes. Our algorithms are one of the first
analytical approaches to the data management problem in dynamically changing networks, and they approximate the optimal
solution within a polylogarithmic factor.
Parallel Algorithms on Dynamic,
Heterogeneous PC-Clusters
In order to satisfy the increasing demand of
computing performance in many scientific
and engineering areas, parallel computer
systems are used. There are several different
kind of parallel machines like the classic
high performance computer systems, workstation clusters with fast interconnection
networks, and PC loosely coupled by the
internet. The Bulk Synchronous Parallel
(BSP) bridging model provides a unified and
simple programing model for these wide
range of systems by ignoring the network
topology.
In addition to theoretical aspects like
models for the utilization of computers,
load balancing strategies, and job scheduling we use our experience to develop two
software libraries, the PUB (Paderborn University BSP) library and PUBWCL. PUB supports centrally administrated parallel computers and workstation clusters and contains load-balancing strategies to use idle
times in a normal office environment efficiently. A faultless execution of jobs, even
when some computers crashed, is achieved
by periodically created checkpoints.
PUBWCL is a distributed system to use
the internet for parallel computations. Arbitrary clients can participate and spend compute power. Users can run parallel applications that will be executed by the network.
In addition to load balancing and fault tolerance wee have to consider security
because clients execute program code of
different unknown users.
Heterogeneous storage area
networks
Load balancing using migration
The infinite growth of data that need to be
stored leads to new challenges in the future
concerning the design and the administration of storage systems. At this year's CeBit
international fair in Hannover as well as at
the LinuxWorld in Frankfurt the Heinz Nixdorf institute introduced V:DRIVE, an new
storage management solution that is able
to significantly increase the efficiency of
storage systems as well as their administration by using innovative administration
approaches. In contrast to common state-
of-the-art storage solutions V:DRIVE
distributes the data in a pseudo random
manner over the connected storage systems leading to an optimization concerning access times of single disks as
well as a higher usage of capacity. That
randomized method guarantees an even
distribution of all I/O requests over all
storage systems. Thus, V:DRIVE ensures
the absence of bottlenecks within the
system, even when having to cope with
a data volume up to several PByte, a
system limit that has already been
reached today by many installations. The
developed methods base on common
theoretical research results that were
gained in corporation with members of
the group “System an Circuit Technologies“ of Prof. Dr-Ing. Ulrich Rückert.
Heterogeneous Storage Area Network
Supported by
SFB-376 A1
SFB-376 A2
PReSto
G-School
HNI-GK
Contact:
Dipl.-Inform. Mario Vodisek
E-mail: vodisek@upb.de
Phone: +49 (0) 5251|60 64 51
Fax: +49 (0) 5251|60 64 82
http://wwwcs.upb.de/cs/vodisek.html
Dipl.-Inform. Olaf Bonorden
E-mail: bono@upb.de
Phone: +49 (0) 5251|60 64 33
Fax: +49 (0) 5251|60 64 82
http://wwwcs.upb.de/cs/bono.html
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Workgroup
Algorithms for large networks
The rapid development of faster computer
hardware and the higher inter-connection
has increased the complexity of networks
dramatically. The most prominent example
of such a complex network is probably the
graph of the Internet, which is defined by
the links between different web pages. Of
course, it is impossible to store such a
gigantic graph on a single computer. Massive data sets also occur in the form of data
streams. Imagine we want to maintain statistics about the network flow at some
Internet router. In this case we have access
to the source and destination address of
every routed packed. Because of the large
number of routed packets it is almost
impossible to store this information for
every packet. Therefore, our goal is to maintain a small representative selection of the
routed packets. In both of the above scenarios mentioned above ’standard’ algorithms do not work because of the large
input size and the resulting time and
space requirements. Therefore, we
develop new algorithms that can analyze network properties by looking at
small random samples and algorithms for data streams that maintain small sketches of the data seen
so far.
Statistical analysis of a dynamic geometric data
stream.
Supported by
DELIS
DFG-Netz
Pasco-GK
Contact:
Dr. rer. nat. Christian Sohler
E-mail: csohler@upb.de
Phone: +49 (0) 5251|60 64 27
Fax: +49 (0) 5251|60 64 82
http://www.upb.de/cs/csohler.html
Sublinear-time approximation
algorithms
At every election, immediately after the poll
stations close at 6 p.m. there is a prognosis
for the outcome of the election. Surprisingly, this prognosis has such a high quality
that winners and losers of the election are
often known at this point of time. This is
achieved despite of the fact that only a few
people are interviewed about their political
preferences. Obviously, it is possible to predict the outcome of an election by asking a
small sample of the population. Why should
not it be possible to use this concept (drawing of samples) in algorithmic research? As
a matter of fact, it is possible to analyze
algorithmic problems in a similar way. In
doing so, a new discipline of algorithmic
research has recently been established and
up to now only few results are known. Certainly, one cannot find an exact solution to
a problem, if one only knows a part of the
input. But it also impossible to predict the
outcome of an election precisely and still
no one has doubts about the significance of
election prognoses. An important class of
network problems are the so-called optimization problems. In an optimization problem we want to maximize the value of an
objective function subject to a set of constraints. We have developed algorithms that
read only a small part of the input but still
compute an approximation to the value of
the objective function. We developed such
algorithms for a number of clustering problems in metric spaces including the k-median, k-means, and min-sum-k-clustering
problem.
Algorithms for data streams
When we develop algorithms for data
stream we can use similar techniques to
those used in the area of sublinear-time
approximation. But there are also some differences that affect the design of algorithms. In contrast to a sublinear time
approximation algorithm, a streaming algorithm can read the whole input at least
once. It has the restriction that at any time
it can only store a small amount of the
observed data. The goal is to select this
small amount in a clever way to get a representative selection. Our interest lies on
algorithms for dynamic data streams where
the streamconsists of a sequence of insert
and delete operations of items into/from a
set. Dynamics induces a number of additional problems. For example, how to make
sure that the data selected by the algorithm
is not deleted in the future? We have developed a fundamental technique to solve a
number of optimization problems (k-median, k-means, MaxCut, Max Traveling Salesman, etc.) in dynamic data streams.
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Algorithms for Computer Graphics
The copling of visualisation and simulation
of highly detailed virtual scenes imparts the
user an intuitive understanding of complex
problems. We investigate algorithms for
efficient rendering of virtual scenes and for
time critical collision detection. We apply
our methods to virtual scenes of material
flow simulations.
Reducing State Changes with a
Pipeline Buffer
In current rendering systems culling and
approximation techniques are used to
reduce the amount of rendered primitives.
However, such methods usually require a
spatial sorting of the polygons which leads
to many state changes (e.g., changes of textures or shader programs) and suboptimal
running time. Since the subset of primitives
changes from frame to frame, sorting the
whole subset in order to states is too
expensive. Our new method includes a small
buffer between application and graphics
hardware. This pipeline buffer is used to
rearrange the incoming sequence of primitives online and locally, in such a way that
the number of state changes is minimized.
If the state of the incoming sequence
changed, the arriving primitive is stored in
the buffer. In case of a buffer overflow the
selection strategy chooses the next state
and all primitives of that state are evicted
from the buffer and rendered. We have
proofed that the bounded waste strategy is
within a polylogarithmic factor of optimal.
Experiments confirm that the number of
state changes is reduced by an order of
magnitude even with small buffers. Our
software implementation improves the rendering time about 10%-50%. The pipeline
buffer is a generic method, i.e., it can be
easily integrated into existing rendering systems, into the device driver or even into the
graphics hardware.
Point Clouds Collision Detection
In cooperation with Dr. Gabriel Zachmann
(University of Bonn), we focus on collision
detection of point clouds and its inherent
surface definition. We define the implicit
surface of a point cloud as the zero set of
a function, which is algorithmically constructed by local linear regression (weighted
least squares). There, we replace the Euclidean distance function by geodesic distances
that can be approximated by a proximity
graph. This allows us to reduce artifacts
during the surface reconstruction dramatically.
The graphs can also be used for collision
detection. Using an interpolation search,
initialized by randomized sampling, we can
find intersections in logarithmic time with
respect to the size of the point clouds. For
further acceleration, we developed a timecritical approach which utilizes point cloud
hierarchies. As a consequence, we can
exclude areas of non-collision very efficiently.
Pipeline Buffer: Rearrangement of polygons
Collision detection between two point clouds
A and B. The colour field visualizes the distance
to the surface of B.
Active Support of the Analysis of
Material Flow Simulation in a Virtual
Environment (BAMSI)
In cooperation with the group ‘Business
Computing, especially CIM’, we develop a
coupled simulation and walkthrough system. The walkthrough system visualises the
simulation steps of the simulator and supports the viewer by detecting and mitigating significant objects in material flow simulations. The simulator computes the
objects of the simulation model that cause
difficulties. The system guides the viewer
across a traffic route of the virtual scene to
significant points and objects. Special markers, which are placed on the traffic route,
focus the attention of the viewer on significant points. Our randomized algorithms
allow a simple increase or reduction of the
approximation quality for different parts of
the scene. Therefore, we can guarantee a
high rendering quality for all objects that
are important for the viewer.
Virtual scene in material flow simulations
Supported by
BAMSI
DFG-Netz
Contact:
Dipl.-Inform. Matthias Fischer
E-mail: mafi@upb.de
Phone: +49 (0) 5251|60 64 90
Fax: +49 (0) 5251|60 64 82
http://www.upb.de/cs/mafi
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Workgroup
Design of Distributed
Design of Distributed
EmbeddedEmbedded
Systems Systems
Distributed Embedded Real-time Systems Become Manageable
Informatics is everywhere; the technical world ranging from
mobile phones to entire fabrication plants is governed by
informatics today. More than 20 billions of micro processors
and the software running on top of them control as Embedded Systems whatever forms our technical environment. The
mission of the research group “Design of Parallel Systems”
is to make contributions to a seamless design process for
Distributed Embedded Real-time Systems (DERty). This central scientific challenge has to be considered to cover all
phases and aspects of such a process.
http://wwwhni.upb.de/eps
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Research Area:
Design Methods for Distributed
Embedded Real-time Systems
Our technical environment is dominated
more and more by informatics. For a long
time, this tendency was restricted to isolated objects like automobiles, appliances, and
fabrication cells. Currently, we experience
the next phase, being characterized by the
increasingly complex communication structures connecting the increasingly intelligent
components. The embedded systems, communication systems and their mobility have
to be considered as an interconnected
whole. The scientific community discusses
terms like “Autonomic Computing”, “Organic Computing”, or “Biologically Inspired
Computing”, for such a kind of systems.
It is our mission to contribute substantially to a seamless design process for such
a scenario, i.e. for Distributed Embedded
Real-time Systems (DERty). Currently, we
are concentrating on three main topics:
DERty UML: Specification, modeling, and
formal verification of embedded Real-time
systems
DERty DREAMS: Component-based distributed real-time operating systems and software synthesis
DERty RuSt: Reconfigurable hardware and
software systems.
Model-based techniques showed to be the
most promising approach to design the
complex systems in a systematic manner.
The UML (current version 2.0) became the
de facto standard in this area. We bundle
our research in the area of specification,
modeling, and formal verification, under the
theme, DERty UML. Besides our efforts
towards a computer based environment
supporting specification and modeling
(even by geographically distributed teams)
including executable specifications, we are
working on the real-time extensions of the
UML standard. An important step in this
direction has been our definition of a realtime extension of the Object Constraint
Language (OCL), called RT-OCL and being
submitted for standardization. For real-time
systems with a dynamic structure, we investigate Pr/T nets as the modeling means, in
this case, ones with dynamical structure. In
the area of formal verification, we are
investigating various kinds of Model Checking, especially ones that allow coping with
dynamically reconfigurable systems.
In most cases, the real-time applications
run on top of a real-time operating system
(RTOS). Our activities in this area have been
bundled under the theme DERty DREAMS.
DREAMS (Distributed Real-time Extensible
Application Management System) is our
library for real-time operating system services. Currently, we are investigating as to
how such a system can be extended into
the direction of self-optimization. For this
purpose, we are extending our configuration tool TEReCS to a run time service
which includes a profile management. We
investigate highly distributed applications
with dynamical communication structure.
In such an environment, the OS services
have to be distributed in such a way that all
the required system services can be granted
with a minimal effort.
49
We are considering the reconfigurable applications and a reconfigurable
RTOS. So, it is not surprising that we are
investigating the potentials of reconfiguration of the underlying hardware as
well. These research activities are bundled under the theme DERty RuSt
(Reconfigurable Systems). We are working on a seamless tool chain which
especially supports the potentials of a
partial or total reconfiguration at run
time. In this context, we investigate the
various options of the reconfigurable
systems, ranging from the stand alone
solutions without any processor to the
heterogeneous PC-clusters. Being
dependent on the actual load distribution, it has to be decided at run time,
whether HW or SW solutions are more
cost efficient. Our seamless approach
allows the configuring of a real-time
operating system on demand in such a
way, that the dynamical reconfiguration
of HW modules can be controlled at run
time.
Our three research areas: DERty
UML, DERty DREAMS, and DERty RuST
are closely connected. In addition, we
investigate a variety of applications,
ranging from the self-optimizing systems of mechanics via intelligent sensors to image processing on PC clusters.
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Workgroup
DERTy UML (Distributed Embedded Real Time Systems –
Unified Modeling Language):
Specification, Modeling & Verification
System modeling and formal specification
in combination with formal verification can
substantially contribute to the correctness
and quality of the designed software/hardware systems and consequently help to
reduce the development costs.
Our research work mainly focuses on
the systematic application of various formal
techniques for system specification, modeling, and verification to the design process
of complex systems characterized by control
distribution and constrained by the realtime and safety requirements.
Our main research topics
include: executable specifications, semantic integration of
heterogeneous specification
techniques and languages,
application of formal verification techniques such as
Model Checking to support
fully automated verification
of distributed (real time) systems against safety and real
time properties. All mentioned topics have been
investigated in the scope of
the ISILEIT and the B1 (SFB
On-the-fly model checking of UML Statechart
614) projects both originating
from different application
domains, i.e., Flexible Manufacturing Systems for the former and self-optimizing Multi
Agent Systems with Mechatronic components for the
latter.
The ISILEIT project, held in
AsmL-based verification framework for real time UML models
cooperation with the working
groups of Prof. Gausemeier
(HNI) und Prof. Schäfer (EIM
Faculty), aims at the development of seamless methodology for integrated design,
analysis and validation of distributed production control
systems. In this project, the
Abstract State Machine language (AsmL) has been
applied to integrate subsets
of SDL and UML languages within one precise, formally defined and executable
semantic model. This model is further used
as an input to the formal verification by
means of model checking. For this purpose,
a dedicated “on-the-fly” model checking
tool has been designed and implemented
that allows to verify an AsmL specification
against the properties described in form of
CTL* formulae.
The project B1 of SFB 614 provides an
approach to combine seamlessly the design
techniques with the formal verification
techniques in the domain of self-optimizing
Multi Agent Systems with Mechatronic
components. The project is held in tight
cooperation with the working group of Prof.
Schäfer (EIM Faculty). For the design techniques, the basic modeling idea is to combine the object-oriented and componentbased techniques with the Multi Agent paradigm. Consequently, the UML state diagrams with real time extension are used to
specify the behaviors of the software components of a Mechatronic Multi Agent System. In order to verify the defined RT-UML
state diagrams, a verification framework has
been designed that is based on the formal
technique of Abstract State Machines
(ASMs) and the AsmL language. This framework shall support formal verification of
off-line as well as on-line properties. The
properties are specified in the RT-OCL language that has been developed in the context of the B1 Project. The RT-OCL represents a refinement of the UML “Object Constrained Language (OCL)” that allows the
specification of real time requirements and
constraints.
In the defined verification framework,
the RT-UML state diagrams and the associated RT-OCL properties are automatically
exported from the used modeling tool
FUJABA1 and are subsequently transformed
into the corresponding AsmL models and
temporal logic formulae. These are further
used as inputs for the verification process.
The generated AsmL models are instrumented using the AsmL exploration functionality
1
UML-based modeling tool developed by the working
group of Prof. Schäfer at the University Paderborn.
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in order to explore their state spaces and
construct optimized and simplified Kripke
structure representations. The constructed
Kripke structures are further used as input
for the model checking process. In the first
phase of the project the real time model
checker RAVEN has been employed for
these purposes. At the same time, some
other model checking techniques like onthe-fly model checking, compositional and
incremental model checking have also been
examined.
Besides the formal verification of
embedded systems, the domain of executable specifications is being thoroughly
investigated. The main objective here is the
definition of an executable subset of UML
2.0 diagrams that allows a platform independent execution of system models. In this
field, the first results have been achieved in
the C-LAB in cooperation with the working
group of Prof. Engels (EIM Faculty).
The main field of interest here are the
real time embedded systems with their specific requirements. For the specification of
such systems, a combination of UML class
diagrams, state machine diagrams, and
sequence diagrams are supported. The class
diagrams are used for describing the system
structure while the state machine and
sequence diagrams are applied for modeling
the system behavior. Moreover, the
sequence diagrams combined with Java-like
syntax for describing basic computation
primitives represent an action language for
modeling activities of a state machine. In
advantage, the considered sequence diagrams of UML 2.0 provide additional features in form of so-called combined fragments that allow the description of structural programming constructs such as loops,
semaphores, alternatives, etc. In addition,
we extended the UML state machines in
order to capture the aspects specific to the
embedded systems like interrupts, timeouts,
time constraints, etc.
To support the execution of the system
models, a dedicated execution platform, i.e.,
UML Virtual Machine (UVM), has been
51
UVM Architecture
defined. The UVM executes the system
models in a binary form. The main idea here
is to execute the state machines directly in
the implementation platform by mapping
them to so-called Executable State Machine
(ESM) units. An ESM represents an efficient
implementation of the state machine. The
action language part of a state machine is
transformed to an executable object-oriented byte code that is similar to the instruction set of a microprocessor.
The UVM architecture is based on a socalled Model Execution Unit (MEU). A MEU
consists of an ESM interpreter and a byte
code interpreter. Interrupts and timeouts
are handled directly by the ESM interpreter.
The Adaptive Runtime Kernel (ARK) comprises of the Memory Manager, the Scheduler and the Dynamic EMS Loader components that run as adaptable services of the
MEU. By modeling these ARK components
as standalone ESMs, a high level of re-configurability during the run-time can be
achieved. This concept thus offers a significant flexibility with respect to the application in the domain of reconfigurable hardware/software architectures. The first very
promising results have already been
achieved by implementing a MEU prototype
on a Xilinx Virtex II.
Supported by
Deutsche Forschungsgemeinschaft: SFB 376, Tp. B1
(Entwurfsmethoden für massiv
parallele Realzeitsysteme);
Deutsche Forschungsgemeinschaft:
SFB 614, Tp. B1 (Entwurfstechniken) ;
SPP 1064, Projekt ISILEIT
Research Team:
M.E.E. Hocine El Habib Daho
Dr. rer. nat. Dania Adnan El-Kebbe
Dipl.-Ing. Martin Kardos
Dipl.-Inform. Stefan Ihmor
Dipl.-Inform. Markus Koch (C-LAB)
Dipl.-Inform. Alexander Krupp (C-LAB)
Dr. Wolfgang Müller (C-LAB)
Dipl.-Inform. Achim Rettberg (C-LAB)
Dipl.-Inform. Carsten Rust (C-LAB)
Dipl.-Inform. Dirk Stichling (C-LAB)
Dipl.-Inform. Jörg Stöcklein
Dipl.-Inform. Henning Zabel (C-LAB)
M. Sc. Yuhong Zhao
Contact:
Dipl.-Ing. Martin Kardos
E-mail: kardos@uni-paderborn.de
Phone: +49 (0) 5251|60 64 94
Fax: +49 (0) 5251|60 65 02
http://www.uni-paderborn.de/cs/agrammig/www/members/kardos
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Workgroup
DERty-DREAMS (Distributed Extensible
Application Management System):
Self-optimizing, Load balancing, Organic Computing
Embedded Systems are being used more
and more during the recent years in a vast
spectrum of applications. Moreover, it is not
rare to have a network of these systems.
Examples of these systems are found in
cars, PDAs, mobile telephones and sensor
networks. Thereby, the Real Time Operating
Systems (RTOS) are taking tasks which are
ever more extensive and complex. In order
to reach flexibility as well as efficiency, the
RTOS needs to be modular, dynamically
reconfigurable and, if necessary, distributed.
In the context of the project C2 of the
SFB 614, in co-operation with the working
group of Professor Rückert (HNI), the development of such a system is being carried
out.
The approach followed here is to design
a RTOS that has the capacity to adapt itself
to the current requirements of the application in a resource-efficient manner.
The RTOS analyzes the current conditions/constraints and optimizes itself independently by means of reconfiguration.
Thus, it has the capability to support applications with strong differences in the
requirements profile with an optimal set of
services.
Self-optimizing RTOS
In particular, every time, a safe system
needs to be ensured, where the deterministic treatment of all safety-relevant tasks,
under adherence to given time constraints,
has to be guaranteed.
In order to realize a self-optimizing
RTOS, the following issues were considered:
First, the design space of the reconfiguration of the RTOS had to be modeled to represent the possibilities of the adjustment of
the system to applications. The reconfiguration takes place if the requirements of the
applications change. Therefore, an interface
between the application and the operating
system had to be defined to make the
exchange of this information possible. With
this information, an adequate configuration
of the system must be selected to support
the current requirements of the application.
For this activity, a Resource Management
System was developed.
The hardware support plays a substantial role in the development of a self-optimizing RTOS.
The parts of the operating system, properly adapted to hardware, can run more
efficiently with the advantage of parallelism of such environment and due to the
fact that they can run concurrently with
the processor. The special attraction is the
implementation of such a system on a chip
(System on Chip – SoC). We investigate in
particular, the potential of those Chips that
provide a processor together with a programmable logic. On this basis, the operating system services are implemented in
hardware and software and they are placed
at run-time on the processor or the FPGA.
The decision of which service to be
placed in which execution environment,
depends on the current processor utilization, the reconfiguration costs, the communication costs and the resources needed. For
this, a cost function is being developed,
which evaluates all system parameters, in
order to find an efficient distribution of the
operating system services.
The development of embedded systems
with Ad-hoc-networks opens the possibility
for new challenging applications. However,
in addition, they require the development of
new concepts for those systems.
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For example, the small embedded systems can be scattered over an area in order
to form a wireless sensor network. The
development of our operating system nanoOS, aims to support these kinds of network
systems.
The challenge with the development
of the nano-OS lies in the limited hardware
resource and the high mobility of the individual systems (nodes). In order to make a
highly efficient operating system possible,
despite those restrictions, the individual
services of the operating system are distributed and used collectively. Moreover, these
services may be migrated with the movement of the system among the nodes, in
order to keep the system capable of providing the requirements of that application.
Algorithms from the area of Organic
Computing are used to decide the Operating System (OS) service to be migrated and
the node in the system to be migrated.
Organic Computing algorithms are based
on the behavioral patterns observed from
the nature and are used for the system to
adapt itself to the underlying environment.
Thus the developed techniques for the
nano-OS were inspired by the strategy of
the ants in the search of their food.
The ants mark the path they use to
search for food and the path back to
its starting place with a chemical substance (pheromone). Other ants follow
this trace and increase, in this way, the
concentration of pheromone along the
path. The path with the highest concentration of pheromone promises to be the
most successful path. Using this as an
analogy with the nano-OS, the offered
services by some nodes correspond to the
food, and the application requirements
correspond to the ants searching for food.
If a node requests an OS service, then it
sends this requirement to another node.
If this node does not have the demanded
service, it passes on the requirement. All
the nodes where the requirement passes
through, similar to the ants’ behavior, are
marked. An optimization of the communication costs can take place because the
requested service moves nearer to the
requesting node. Always, the requested
53
Example for localization and migration
of operating system services based on
ant’s algorithms
service migrates using the path with the
strongest markings.
The orientation towards the biological
principles regarding the self-organization
and the self-optimization, allows the development of a system that has the capability
to adapt itself to the environment dynamically.
An interesting new research field is the
so-called High Performance Reconfigurable
Computing (HPRC), which results from the
fusion of the High Performance Computing
(HPC) and the Reconfigurable Computing
(RC). Our platform consists of a dedicated
PC-Cluster whose computing nodes are
equipped with FPGA cards. The heterogeneity of this system is characterized by the
different arithmetic and logic units (processors on one side and FPGAs on the other).
This heterogeneity posts a big challenge in
the development of the methods to ensure
an efficient execution of the applications.
Therefore, an operating system extension
would be developed, which decides at runtime, which functional components of the
application should be executed on which
arithmetic and logic units. A decentralized
approach will be followed, in which the
decisions are made locally on each computing node. The decision is based on the system utilization and the particular characteristics of the application.
Supported by
Deutsche Forschungsgemeinschaft: SFB 614, Tp. C2
(RTOS für Selbstoptimierende Systeme);
Europäische Union, Forschungsprogramm IST:
Projekt EVENTS
Research Team:
Dipl.-Inform. Michael Ditze (C-LAB)
M. Sc.-Eng. Marcelo Götz
M. Sc. Tales Heimfarth
M. Sc. Arvind Krishnamurthy
Dipl.-Inform. Johannes Lessmann
M. Sc. Norma Montealegre
Dipl.-Inform. Simon Oberthür
M. Sc. Tien Pham Van
Dipl.-Inform. Sabina Rips
Dr. rer. nat. Friedhelm Stappert (C-LAB)
Dipl.-Inform. Gunnar Steinert
Contact:
E-mail: mgoetz@uni-paderborn.de
Phone: +49 (0) 5251|60 65 16
Fax: +49 (0) 5251|60 65 02
http://www.uni-paderborn.de/cs/mgoetz
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Workgroup
DERty RuSt (Reconfigurable Systems):
Modeling, Synthesis and dynamic Reconfiguration
Within the framework of our design
methodology, the research team DERty RuSt
concentrates on the topic of reconfigurable
computing. The ongoing research activities
complement one another to a complete
design methodology, realized in an integrated tool chain. Starting with a model-based
modeling approach via an automated synthesis process up to a dynamic reconfiguration process, this methodology enables us
to benefit from the partial and complete
hardware reconfiguration during runtime.
The aim is to design computer systems
that involve reconfigurable hardware
devices such as FPGAs (Field Programmable
Gate Array). Depending on the characteristics of the application, such devices can
overcome sequentially working processors
in efficiency and performance by many
times. Until now, the traditional design flow
resembles the design flows of digital circuits
and does not consider the capability of
reconfiguring the device during runtime.
Therefore, the research team DERty RuSt
explores the design methods which take
advantage of the special properties of
reconfigurable hardware devices and make
them accessible to higher levels of abstracModeling a reconfigurable system from a
behavioral, structural and a geometrical point
of view.
tion. Thus, runtime systems like the
DREAMS operating system, which was
developed by our research team DERty
DREAMS, has the capability to manage the
resources of a reconfigurable computing
system and make them available to the
applications.
The working group targets several different computer platforms: In the area of
embedded systems, the main computing
resources are either standalone FPGA(s) or a
combination of FPGA(s) and processor(s).
Examples are the RC-200, made by Celoxica,
the RAPTOR 2000 developed by the working
group of System and Circuit Technology of
the Heinz Nixdorf Institute and, a board distributed by the company AVNET, equipped
with a Xilinx Virtex-II PRO FPGA. The combination of design methodology and runtime
system should assure applications to be
platform independent to the greatest possible extent and to maximize the advantage
of runtime reconfiguration in compliance
with the given real-time constraints.
As the hardware systems may vary their
behavior over time, one research topic
addresses the dynamic placement of the
exchanged functionality inside the reconfigurable hardware components. Therefore,
the connections and properties of the
affected hardware are reconfigured to
adapt to the behavior during runtime – in
contrast to the classical “static” hardware.
The challenges resulting from this approach
reach from an abstract modeling up to a
realization, in form of specific synthesis
tools. The ongoing research is supported by
the DFG program Rekonfigurierbare
Rechensysteme.
A clever partitioning approach developed in our group, enables us to compute
applications that exceed the capabilities of
the target hardware platform. Therefore, we
cluster applications to modules, which then
will be downloaded and calculated consecutively on the hardware. We employ spectral based methods for the clustering to
find solutions in a multi-dimensional space.
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A tool, dedicated to the mentioned
challenges in the design process of a reconfigurable system, divides the modeling
aspect into the three views: Behavior, structure and geometry. These views deduce the
well known Y-chart model for system
design. The tool visualizes the user-defined
dependencies between the three views.
Later, the partitioning methods can be
applied to an interactive and automated
synthesis process, in the form of a tool-kit.
Another research topic concentrates on
the development of the operating system
services in hardware, to execute the independent tasks in parallel on an FPGA platform. In contrast to the processor based
systems, the application processes and the
operating system services themselves are
implemented as digital circuits. Here, the
operating system has to simultaneously
control the execution of all the processes
and manage the required resources of the
platform. Therefore, a memory manager was
implemented to assign the available memory dynamically to the processes. The conflicts resulting from the simultaneous memory requests are solved by a priority based
scheduling.
Additionally, the various models of multitasking on FPGAs are explored. For example, it was shown, how a process can be
realized as a digital circuit which can grow
up and shrink again during runtime (by
adding and removing circuit elements). Due
to this behavior, a process can adapt itself
dynamically to the amount of the available
resources.
One important research aspect focuses
on the reconfigurable interfaces. These
interfaces allow us to interconnect heterogeneous applications in an alterable communication system. The interface acts as a
transparent adapter and is able to handle
numerous applications in parallel (multi task
interfaces). Due to the modular structure of
the adapter, we can exchange individual
connected applications during runtime by
the reconfiguration of the interface. The
55
Execution and appliance of an operating system
on an FPGA-based platform.
specification of a backup-behavior that is
executed during the reconfiguration process
enables us to switch deterministically
between the tasks in safety-critical realtime environments.
The modeling of the complex communication systems with UML2.0 is handled by a
dedicated tool developed in our working
group. A subsequent synthesis process generates the reconfigurable VHDL fragments
of the adapting interface block which may
be placed by the tool mentioned above.
Further, the presented design methodologies for reconfigurable computing und
runtime environments are very interesting
for some topics related to the research
team DERty DREAMS: In heterogeneous
systems, the ability of reconfiguration is a
fundamental component for swapping out
operating system services dynamically to
hardware platforms. The distribution of services aims to gain a maximum performance
under the constraint of an optimal utilization of resources. Another aspect of our
methodology covers load balancing in heterogeneous clusters, where the reconfigurable hardware is one part of the
employed computing resources.
Supported by
SFB 376, Tp. B1 (Entwurfsmethoden für massiv parallele Realzeitsysteme);
SPP 1148, Projekt TP2R2
Research Team:
Dipl.-Ing. Klaus Danne
Dipl.-Inform. Florian Dittmann
M. Sc. Tales Heimfarth
Dipl.-Inform. Achim Rettberg (C-LAB)
Dipl.-Inform. Gunnar Steinert
Contact:
E-mail: ihmor@upb.de
Phone: +49 (0) 5251|60 64 93
Fax: +49 (0) 5251|60 65 02
http://www.uni-paderborn.de/cs/ihmor
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Workgroup
Microelectronics – Key Technology and Challenge
With the growing use of integration technology in almost all
areas of life, microelectronics has become the key technology
of the modern information society. The systematic design of
resource-efficient microelectronic systems and their use
according to specific demands constitute the central research
aim of the Research Group of System and Circuit Technology.
http://wwwhni.upb.de/sct
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Key Technology Microelectronics
Cognitronics
The unbroken revolutionary progress of
microelectronics is the driving force behind
the devolopment of new products with
noticeably extended functionality and
increased capability at lower costs. Even
beyond the year 2010, the development of
Microelectronics will not be restricted by
physical-technological limitations so that
challenges lie in the mastery of the design
complexity – the technological standard is
more than 100 million transistors on an
area of few square centimetres – and in the
economical use of these technological possibilities.
Against this background, the research
group of System and Circuit Technology
develops microelectronic devices and systems in digital and analog circuit technology. A special focus is on massively parallel
realisations and the evaluation of the
resource efficency of such implementations.
Here, resource efficiency means to handle
the physical quantities space, time and
energy economically.
Our research and technological transfer
activities concentrate on the central
domains of Cognitronics and Mediatronics.
The theoretical and practical education of
students in managing and mastering the
key technology of microelectronics in concrete applications of information and
automation technology goes hand in hand
with our research work.
Cognitronics deals with the development of
microelectronic circuits for a resource-efficient realisation of cognitive systems. It is
the aim of our research activities to equip
technical products with cognitive skills in
order to improve their functionality and
make them more reliable and user-friendly.
Examples of cognitronic systems have
developed in nature in great numbers over
the course of evolution. It therefore makes
sense to transfer biological information
processing principles onto technical systems. Central to our work is the analysis of
the theoretical capability and the integration-oriented realisation of such principles.
Mediatronics
Mediatronics is a new interdisciplinary
research field at the Heinz Nixdorf Institute,
which is concerned with the situative integration of technical products and systems
into open systems. In future, these systems
will be marked, to an even greater extent,
by a decentral organisation of dynamically
connected, intelligent components.
Our aim is to develop and provide
methods and techniques that enable technical products to communicate and cooperate efficiently. Here, we follow new
approaches to use the available computing
power and network resources efficiently in
order to optimally meet the demands for
service quality and reliability of future
communication systems.
Microelectronics as technological basis for
Mediatronics and Cognitronics.
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Workgroup
Cognitronics
Mobile, autonomous minirobots for research and edutainment
Motivation
Cognitronic systems are characterized by
situation-dependent behavior based on
problem-specific data processing of environmental sensor information gathered
from different sensor systems. In the development process of cognitronic systems, we
use simulation tools to analyze the features
of a solution. Furthermore, we aim at the
prototypic realization, as only experiments
on real systems can provide objective evidence of the system’s performance. Pros
and cons of a proposed system can be identified more realisticly on a prototype than
on a simulation model. We use the Khepera
minirobot as development platform and
prototyping device for cognitronic systems,
which – starting from a standard base module – can be upgraded as regards its capabilities by adding various extension modules.
Minirobot communication network using
Bluetooth technology
Implementation
The minirobot needs to be equipped with
adequate capabilities depending on the specific application scenario. We have developed additional modules for the minirobot
that extend its sensory capabilities (ARMmicrocontroller module, FPGA-module, ASIC
(application-specific integrated circuits )
module), enable inter-robot communication
(infrared module, Bluetooth module) and
provide additional features for robot interaction (gripper module, sound module).
To achieve maximum autonomy of the
robot’s actions as well as to provide mechanisms for cooperative behavior in robot
colonies, a Bluetooth communication module has been developed. The pluggable
module can be used as a replacement for
Supported by
Service Discovery; Graduiertenkolleg “Automatische
Konfigurierung in offenen Systemen“
Contact:
Dr.-Ing Ulf Witkowski
E-mail: witkowski@hni.upb.de
Phone: +49 (0) 5251|60 63 52
Fax: +49 (0) 5251|60 63 51
http://wwwhni.upb.de/sct/cognitronics
Minirobot with 2D-Camera module and
Bluetooth communication module
the serial cable, providing a higher communication speed. The communication module
can also be used to build communication
networks of up to four robots communicating in parallel and thus enable cooperative
behavior by synchronizing a group of
robots. The benefit from the Bluetooth
communication is that it is not necessary
for the communicating source and destination to be in a direct line of sight, and that
the robots do not have to be aligned to
each other.
Application scenario
The replacement of the serial cable communication by using the Bluetooth module for
the communication between host PC and a
robot (point-to-point connection) allows an
effortless visualization of sensor data as
well as software tests without limiting the
robot’s freedom of movement. Furthermore,
the robot can be reconfigured via the wireless communication link to easily implement
different behaviors. Point-to-multipoint
connections with one master and up to
three slaves enable new fields of applications such as cooperative exploration and
mapping of the environment. Obstacles in
the robot’s environment are reported to the
master in order to synchronize the knowledge of the explored area on all slaves.
In contrast to infrastructure-based networks, these types of wireless networks are
decentralized and characterized by their
high dynamics. The autonomous minirobots
negotiate a command hierarchy by applying
service discovery techniques. The number of
network participants in point-to-multipoint
connections is limited to one master and
seven slaves by the Bluetooth technology
(piconet). By developing scatternet solutions
an even larger number of robots can be
connected simultaneously by wireless
links and we will be in the position to develop, implement and
evaluate cooperative behavior
strategies for groups of
robots to perform research in
the areas of service discovery
and cooperative behavior in
robot colonies. With about 70
minirobots, our research group
has one of the largest robot
collections worldwide.
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Service Discovery
Finding and Using Services in Multi-Robot-Systems
Motivation
First installations of autonomous mobile
robots (e.g. as cleaning or security robots)
have already been realized. If mobile robots
are to be deployed in large numbers in our
environment in future, cooperation among
the - presumably highly specialized - robot
systems will be necessary for a successful
application.
Robots need the ability to mutually
offer each other services in an open, heterogeneous network and they must be able
to efficiently discover and use those services. Only this feature will allow them to
cooperate flexibly and dynamically to solve
tasks.
Implementation
The robots will form so-called mobile adhoc networks (MANETs) for communication.
These are wireless networks consisting of
mobile nodes that are characterized by their
decentralized organization and the potentially high dynamics of the network structure. Communication over large distances in
this kind of infrastructureless networks is
achieved by multi-hop connections where
nodes on the way between source and destination act as routers and forward received
messages towards the destination.
The problem of efficient service discovery in mobile ad-hoc networks is still
unsolved. Known solutions for service discovery (like Jini, JXTA, SLP, UPnP, Bluetooth
SDP or Salutation) were not designed with
such highly dynamic and resource-constrained networks in mind. A solution for
this problem cannot be studied independently from the routing protocols in such
networks. We consider position-based routing algorithms here, as robots inevitably
have to know their position within their
environment and relative to each other to
navigate and act meaningfully. Positionbased routing algorithms make use of the
positional data of the network nodes to
increase scalability and efficiency. The
objective of this project is to develop a
solution for service discovery in networks of
mobile robot systems and to demonstrate
its capability through a working implementation on real robots. Regarding our solution, we put particular emphasis on:
• Robustness: A network of mobile robots
can be very dynamic. Nodes will fail, log
off or leave the radio range, and new
nodes will join the network. The absence
of single nodes should not decrease the
success rate of search requests of the network as a whole. New nodes are to be
integrated quickly.
• Scalability: The developed solution should
be able to integrate and service hundreds
or even thousands of nodes.
• Compatibility: A smooth integration with
wired networks should be possible so that
so called “wired-cum-wireless environments” can be built. This will enable our
solution to exploit existent infrastructure,
if available, to increase scalability and
throughput of the network while decreasing resource consumption of the mobile
nodes.
• Efficiency: The developed solution has to
be resource-efficient, particularly as
regards the radio bandwidth.
• Realizability: At the end of this project,
we want to implement the solution in a
real system. Thus the realizability of the
solution is a major point in addition to
the above mentioned requirements.
Basic idea of service discovery
Two robots cooperate
Supported by
Graduate College “Automatische Konfigurierung
in offenen Systemen”
Contact:
Dipl.-Ing. Jia Lei Du
E-mail: jialdu@hni.upb.de
Phone: +49 (0) 5251|60 64 88
Fax: +49 (0) 5251|60 63 51
Dr.-Ing Ulf Witkowski
E-mail: witkowski@hni.upb.de
Phone: +49 (0) 5251|60 63 52
Fax: +49 (0) 5251|60 63 51
http://wwwhni.upb.de/sct/cognitronics
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Workgroup
Reconfigurable Computing
Modeling of dynamically reconfigurable architectures
Simulative analysis of reconfigurable
architectures
A fundamental aim in the development of
microelectronic circuits is the efficient handling of the given resources area, time and
power. Moreover, the increasing complexity
of microelectronic circuits requires highquality design and verification tools that
enable a simple computer aided design of
integrated circuits.
Microprocessors offer a high degree of
flexibility due to their software programmability. Compared to application specific integrated circuits (ASICs), conventional microprocessors have a limited performance
because of their sequential program execution. However, ASICs are more powerful but
less flexible, since they cannot be modified
after fabrication.
Dynamic reconfigurable hardware offers
a reasonable compromise between microprocessors and ASICs. Current field-programmable gate arrays (FPGAs) support partial reconfiguration, that is, the reconfiguration of part of the FPGA while the remaining part is unchanged and keeps operating.
Thus, the available resources can be adapted
at run-time to meet new external requirements. Hardware components can be configured dynamically on the FPGA, and, after
finishing execution, they can be removed
from the FPGA in order to release resources
that can be utilized by future hardware
components.
The promising concept of reconfigurable
hardware is seldomly used in current
designs because there is a lack of simple
and automated design methods that support the concept of partial hardware reconfiguration. A crucial step towards the devel-
Supported by
Deutsche Forschungsgemeinschaft: SFB 614-C1
Contact:
M.Sc. Markus Köster
E-mail: koester@hni.upb.de
Phone: +49 (0) 5251|60 64 68
Fax: +49 (0) 5251|60 63 51
Dr.-Ing. Mario Porrmann
E-mail: porrmann@hni.upb.de
Phone: +49 (0) 5251|60 63 52
Fax: +49 (0) 5251|60 63 51
http://wwwhni.upb.de/sct/mediatronics
Structure of the simulation framework SARA
opment of such design methodologies is
the modeling of reconfigurable architectures.
Modeling
In our project “Hardware Reconfiguration”,
which is part of the SFB614, we target the
development of a methodology for a simple
yet efficient utilization of reconfigurable
hardware. The development is based on an
abstract platform-independent modeling of
partially reconfigurable architectures. By
using the model, methods for placing and
removing hardware components on the
reconfigurable architecture can be developed and analyzed.
The analysis is realized by the simulation
framework SARA (simulation framework for
analyzing reconfigurable architectures),
which applies the model. By using SARA the
behavior of different system approaches for
dynamic reconfigurable hardware can be
simulated and tested with respect to metrics, such as device utilization. The results of
the simulations are used to compare different system approaches and to determine
typical features of reconfigurable architectures. Furthermore, the corresponding
reconfiguration methods can be benchmarked and optimized.
Based on our latest analyses we have
developed new effective methods for partial
dynamic reconfiguration. These allow an
efficient placement with low computational
complexity.
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Mediatronics
RCOS for Self-optimizing Systems
Objective
Self-optimizing systems automatically
adapt to dynamically changing environments and user requirements. Our aim is to
develop an information processing unit for
self-optimizing mechatronic systems that
efficiently uses the available hardware
resources. Therefore, the system distributes
the actually required tasks to appropriate
computing nodes of the system. In particular, real-time requirements and communication requirements vary if the distribution of
tasks changes in the considered mechatronic systems. In subproject C2 of the Collaborative Research Center 614, we develop a
Real-Time Communication System (RCOS)
that covers the above described demands.
the internal bus can be
released through a
hardware reconfiguration of the interfaces.
For this reason, the
two separate interfaces are substituted by a single
integrated hardware
switch during runtime. The structure of this switch is more complex, but it is
able to forward data packets autonomously
and, as a consequence, to manage a far
higher amount of data. However, the
resources used by the hardware switch are
no longer available for other applications.
Prototypical realization of the
reconfigurable switch on the
RAPTOR2000 system
Prototypical Realization
Concept
The basis of our RCOS is formed by new
dualport network nodes that allow setting
up line and ring topologies. Each node consists of at least two network interfaces that
connect the node to its neighbours and to
an embedded processor. The nodes handle
two different types of data streams, that is,
data originated from or terminated at the
processor as well as streams that simply
pass through. If network traffic is rather
small or if real-time requirements are low
or even nonexistent, comparatively simple
network interfaces can be implemented,
occupying only a few resources. In this case,
data packets are forwarded by a software
implementation. This causes a high load for
the processor, the internal bus and the
memory. If the communication requirements increase, e.g., due to a new task with
high real-time demands, the processor and
By means of our rapid prototyping system
RAPTOR2000, we have realized the RCOS
prototypically and tested it in a real network environment. A Field-programmable
Gate Array (FPGA) is used to implement the
two switch variants. The dynamic reconfigurability of the FPGA facilitates the
exchange of the two switches during runtime.
To guarantee the real-time capabilities
of our communication system, a loss of
packets during the interface reconfiguration
must be avoided. Therefore, we have developed a method that switches the send and
receive port of the interfaces separately
during the interframe gap of the applied
Ethernet protocol. This requires the coexistence of the two switch implementations
on the FPGA during reconfiguration. Our
method ensures that all data that is stored
in the internal buffers can be transmitted.
Supported by
Deutsche Forschungsgemeinschaft: SFB 614-C2
Contact:
Dipl.-Ing. Björn Griese
E-mail: bgriese@hni.upb.de
Phone: +49 (0) 5251|60 63 49
Fax: +49 (0) 5251|60 63 51
Dr.-Ing. Mario Porrmann
E-mail: porrmann@hni.upb.de
Phone: +49 (0) 5251|60 63 52
Fax: +49 (0) 5251|60 63 51
Exchanging two separated network interfaces with an integrated switch
http://wwwhni.upb.de/sct/mediatronics
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Workgroup
Mechatronics and
Dynamics
With Creativity to Innovation
Today, new developments often emerge at the borders
between disciplines, where different ways of thinking
confront and stimulate one another. Mechatronics, one
of the key technologies of the 21st century lies within this
new field.
http://wwwhni.upb.de/mud/
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Around 1975, the word Mechatronics was
characterised by the Japanese “Ministry of
International Trade and Industry (MITI)” to
concisely describe the control of machines
with the aid of microprocessors. Mechatronics owes its development particularly to
the increasing importance of information
processing in the design of new machines.
The main driving force was and still is the
rapid development of Microelectronics in
the last decades.
Numerically controlled power tools,
robots, electronic motor management, ABS,
the airbag, CD-Player, walkman, video cameras etc. are typical examples of mechatronic systems. The Science of Mechatronics
was developed through the attempt to
understand the common elements behind
these many revolutionary new creations.
Systems can be described by matter,
energy and information flows at their
inputs and outputs, as well as through the
ways in which they are connected to one
another. The information flow in mechatronic systems is of particular importance.
In the past, information flows had to be
realised mechanically (lever mechanisms,
linkage system, etc.); today, this can easily
occur over standardised IT modules. Microprocessors have become machine elements
like screws, clutches and similar. The coupling of technical systems on the level of
information processing is particularly easy
to realise. An advantage – but also a risk –
of this immaterial coupling is the enormous
flexibility that results. Therefore, situation
dependant action becomes possible.
Machines are becoming ‘intelligent’.
As with all other engineering sciences,
the fundamental task lies in analysis and
synthesis. The challenge in the analysis is
the close coupling of mechanic, electronic
and information processing modules with
63
respect to functionality. The respective
domain specific descriptions must be
brought together. In the synthesis of
mechatronic systems, there is a need to
simultaneously consider functional and
creative points of view.
“The art of building machines” (mechanics) by taking into account the possibilities
of microelectronics is one of the key technologies at the beginning of the 21st century.
While the initial goal in the development of mechatronic systems generally
involved shifting mechanical functions over
to the realm of electronics and software,
recent years have increasingly seen the
work focus more on integrating systems
into information processing networks to
provide additional functions. The automatic
configuration in open systems allows the
co-operative, situation-dependant behaviour of technical systems and builds an
important foundation for the development
of self-optimising systems.
The field of mechatronics now faces its
next important development stage: the
incorporation of man into the system
design. The term “human centric mechatronics” clearly expresses the concept that
systematically adapts the specifications for
mechatronic systems to meet the needs of
(human) users and masters the development and optimisation methods.
We concentrate our basic research on the
competency fields of:
– Dynamics and Vibrations,
– Contact Mechanics and Friction,
– Piezoelectric Materials, and
– Development Methodologies for
Mechatronic Systems
and work within application projects from
the areas of:
– Actuators,
– Lighting Technology,
– Ultrasound Technology, and
– Automobile and Train Technology
in close partnership with industries.
In the past years, the area of “Human
Centric Mechatronics” was particularly
developed. Within the framework of the
L-LAB, a competence centre for Lighting
Technology and Mechatronics supported
by a PrivatePublicPartnership between
the Hella KG Hueck & Co. and the University of Paderborn.
There we are investigating driver
behaviour when using driver assistance
systems, including their consequent
behavioural adaptation. We are also
working on the conception of automatic
collision-avoidance systems and other
advanced assistance functions in motor
vehicles. The development of active
lighting systems that was supported by
a research professorship funded by the
Donors' Association for the Promotion
of Science and Humanities in Germany
(Stifterverband für die Deutsche Wissenschaft) has meanwhile advanced so
far that we have been able to carry out
systematic acceptance studies in drive
tests.
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Workgroup
New materials for actuators
Piezoelectric actuator with lever transmission for
precision positioning
The Mechatronics and Dynamics research
group works on innovative low to medium
power drive systems and so addresses
aspects of modelling, simulation, development, and application. Solid-state actuators
present an alternative to conventional electromagnetic actuators. The specific characteristics of the respective working principles
make it possible to open up new fields of
and opportunities for application.
Solid-state actuators
Piezoelectric resonance actuator for a
linear motor
Actuator with shape memory alloys
(NanoMuscle, Inc.)
When a “normal” material is elastically
deformed, it returns to its original shape as
soon as the mechanical load is released. In
the case of plastic deformation, the material retains its deformed state and the original shape is lost. The active elements in
solid-state actuators are “smart” materials
whose material parameters or dimensions
can be specifically and reversibly changed
by external field effects. These parameters
can be manipulated by temperature or electric respectively magnetic fields. Examples
of solid-state actuators are magnetostrictive and piezoelectric actuators plus shape
memory alloys and polymers.
Piezoelectric actuators
Solid-state actuators and electromagnetic actuators in comparison
Contact:
Dipl.-Ing. Florian Schiedeck
E-mail: Florian.Schiedeck@hni.upb.de
Phone: +49 (0) 5251|60 62 69
Fax: +49 (0) 5251|60 62 78
Piezoelectric materials expand under the
influence of an electric field. This effect is
called inverse piezoelectric effect. We have
been working on developing quasistatic and
resonant-driven piezoelectric actuators for
several years. Piezoelectric actuators stand
out especially through their very high
power density, high dynamics, and precise
positioning accuracy. Conveniently arranged
levers make it possible to achieve remarkable distances of travel, despite the small
actuator strokes. Micro pushers can produce
continuous movement of the rotor. Working
in cooperation with industrial partners, the
research group developed various linear
motors and actuators for semiconductor
manufacturing machines to the fully-functional technology demonstrator stage and
supported the subsequent product development process.
Actuators with shape memory alloys
Shape memory alloys are capable of
reversible phase transformations, i.e. the
alloy's crystalline structure changes in
accordance with the applied temperature.
Most actuators use the thermal shape
memory effect. The thermal shape memory
effect is an intrinsic property of shape
memory alloys through which cold-shaped
materials can repeatedly be returned to
their original shape by heating. In most
cases, actuator applications use a shape
memory alloy wire that is stretched by an
external force in its cold state. When current is fed through it, the wire heats up and
the material returns to its original shorter
shape. Such changes in length can be used
as a driving force. Besides these unidirectional shape memory alloy actuators which
require an external force for the reverse
movement, there are also elements with a
so-called two way effect. Without the use
of external forces, various deformation
states are achieved in these by means of
cyclical heating and cooling. However, these
materials only offer much smaller maximum
stroke distances and forces and so are only
of little technical use. Compared with other
actuators, shape memory alloy actuators
have a very high energy density and are
electromagnetically compatible.
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Piezo technology
Vibration drives
Linear vibration drives
Vibration drives are small electrical motors
that differ substantially from electromagnetic motors in modus operandi and performance characteristics. These drives work
on the following principle: piezoceramics
initially transform electrical energy into
mechanical vibration and this energy then
drives the moving part. Both rotary as well
as linear drives are already commercially
available, while multi-coordinate drives are
being developed.
Piezoelectric linear drives are capable of
achieving forces of up to 40 N and propulsive speeds of up to 300 mm/s. The impressively simple functional principle provides
these drives with a number of favourable
properties which make them useful alternatives to classical electrical drives in numerous applications. Of interest are above all
their simple mechanical construction and
the fact that they can already generate
high torques and effective output at low
revolutions. Further advantages are their
electromechanical compatibility, their high
holding torque without additional external
energy input, their high dynamic performance and their high precision in the nm
range for precision positioning. In addition,
linear vibration drives are capable of directly
producing translatory movement without
the need for gearing which provides
additional advantages over conventional rotary motor transmission
solutions, such as high efficiency,
less package space and no backlash.
Vibration drives are currently
used as positioning devices in autofocus camera lenses and for adjusting car steering wheel positions, see
Fig. 2. Future fields of application
include positioning units for CD and
DVD drive writing/reading heads,
video recorders, scanners, and similar
products, and cheque card feeds for
cash dispensers (ATMs). Additional
conceivable applications for linear
and rotary positioning tasks can be
found in the field of automotive
Rotary vibration drives
In a rotary travelling wave motor, a disklike stator (1) is made to vibrate by two
ring-like arranged piezoceramic actuating
systems (2) until, at a resonance frequency
in the ultrasonic range, a travelling wave
(revolving mechanical flexural wave) develops. The material surface points of the
stator move along elliptical paths with
vibration amplitudes of up to several
micrometres. A pressed-on, ring-shaped
rotor disc (3) is set in rotation by the friction of the travelling wave's subsequent
complex rolling motion in the polymer
contact layer (4). Typical performance specifications for present-day rotary travelling
wave motors are torque of up to 2 Nm at
revolutions of around 100 rpm.
engineering (drive mechanisms for
electric windows, sunroofs, seat
adjusters, …) and in the field of office
technology (paper feeds for shredders,
printers, faxes, …).
Our research work concentrates on
optimising the whole system to improve
the motor properties. We do this by
developing models which describe the
electromagnetic coupling in the piezoceramics and the non-linear contacts
between stator and rotor. Experimental
studies are used to systematically confirm the validity and applicability of our
abstracted models.
Fields of application for vibration drives
Supported by
Development of Coordinated Vibration Drives
Contact:
Dipl.-Ing. Maik Mracek
E-mail: maikm@hni.upb.de
Phone: +49 (0) 5251|60 64 68
Fax: +49 (0) 5251|60 62 78
Dr.-Ing. Tobias Hemsel
E-mail: hemsel@hni.upb.de
Phone: +49 (0) 5251|60 62 69
Fax: +49 (0) 5251|60 62 78
Exploded view of a rotary travelling wave motor
(Graphic: Daimler-Benz Forschung)
http://wwwhni.upb.de/mud
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Workgroup
Microsensors
New microsensors for bonding
technology
Ultrasonic bonding system
The lifetime and reliability of electronic
systems are highly dependent on the quality of the electrical interconnections. Ultrasonic wire bonding is one of the most
important methods used for electrically
connecting semiconductor devices
(microchips) with the circuit substrate.
A friction welding process is used to
connect the contact wire to the chip and
substrate surface. In many applications,
and especially in security sensitive ones,
Bonding on contaminated substrate
Signal patterns for contaminated and clean bonding
Comparing simulations with an FEM model,
a discrete analogous model and measurement of
the input admittance I/V
Supported by
INERELA
FEM-Modelling of Piezoelectric Composite
Oscillators
Contact:
Dipl.-Ing. Michael Brökelmann
E-mail: michaelb@hni.upb.de
Phone: +49 (0) 5251|60 61 85
Fax: +49 (0) 5251|60 62 78
extremely high standards apply for the
quality of each and every connection.
Because even just one defective connection
can lead to failure of the whole system. In
the past, quality control essentially meant
observing the wire deformation, although
this did not guarantee that all types of
faults could be definitely and clearly identified.
The ever greater number of electrodes
per microchip means that demand is
increasing for an integrated bond quality
monitoring system which already reliably
identifies and documents the quality of
each connection during the bonding
process. Our project aims to develop such
a system.
Sensors
In the course of the project, two methods
were identified as particularly suitable
approaches. One very elegant method
involves so-called “self-sensing” which
assesses the electrical terminal behaviour
of the bonding system's piezoelectric actuators. This observes voltage and current to
derive conclusions on the mechanical
processes taking place in the welding zone.
The second method is based on the integration of an additional piezoelement into the
system whose piezoelectric material properties are used for sensing purpose.
Modelling and optimisation
An analytical continuum model and an FEM
model were built to examine the sensor
transfer behaviour at various system configurations. Due to their complexity, these
models are largely suitable for studies in the
frequency domain. So that time simulations
could also be carried out effectively, especially of the non-linear bonding process, a
discrete analogous model with few degrees
of freedom was also created. At this it was
possible for the project to draw on a
method developed by the Mechatronics and
Dynamics research group for the automatic
generation of the substitute parameters of
the analogous model from an existing FEM
model. By massively reducing the degrees of
freedom only keeping the key eigenmodes
of the system, effective time simulations are
possible without any significant loss of
model precision.
With these models it was possible, for
example, to calculate and study the transfer
behaviour and sensitivity of the sensor and
finally to create an optimised prototype.
Experimental studies
First experimental studies on sensor sensitivity to external disturbance at steadystate operation already delivered good
results. Practical bonding experiments finally confirmed the method's efficiency.
Specifically defined bonding faults that we
introduced, such as bonding on contaminated substrate or close to the edge of a
circuit, were well identified by the selfsensing method and excellently identified
by the use of the integrated piezosensor.
The project described here is part of the
BMBF Collaborative Research Project
INERELA (www.inerela.de).
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Mechatronics in motor vehicles
Active lighting systems to raise
traffic safety
The number of night-time traffic accidents is very high. In most cases, the
late recog-nition of objects in the traffic zone plays a key role. It is especially
at night and during the twilight of
dusk or dawn that poor visibility leads
to a lack of driver information. Active
lighting systems are able to raise traffic
safety.
One of the approaches involves socalled reduced glare full-beam lighting
systems. The basic idea is to control
the light emitted by the vehicle's full
beam in such a way that only those
areas of the traffic zone are lit in
which no glare is caused. Where glare
may be caused, e.g. in the eye-points
of drivers in on-coming traffic, the
optical system serves to shield the
light. This allows many more nighttime journeys to be made with fullbeam lighting, which guarantees very
Development of an adaptive
drum brake
Wheel brakes generate moments and so
convert kinetic energy into heat. The
ratio between brake force and applied
force is defined as brake shoe factor C*.
Duo-servo drum brakes have the highest
C* value. Consequently, at the same
applied force they generate a greater
braking moment than disk brakes.
This fundamental advantage is countered by a number of disadvantages
which have resulted in the predominant
use of disk brakes in motor vehicles
today. For example, one drawback of
drum brakes is their high sensitivity to
changes in the coefficient of friction
which can occur, for example, as a result
of temperature increases under braking.
The sliding speed between brake lining
and drum also has an influence on the
coefficient of friction. A constant applied
force does not therefore automatically
lead to a constant braking force.
This project studies whether and how
a constant brake shoe factor can be
achieved with duo servo drum brakes
good visibility and so improves traffic
safety and driving comfort.
A key element in the generation of
suitable light distributions is provided by
digital micromirrors which recently
became available. In combination with
predictive sensors, also only available
since very recently, it will then be possible
to design systems such as non-glare fullbeam headlights.
The work on two doctoral dissertations and several study assignments and
Diplom theses involved a number of concept studies being carried out, with the
most promising solutions being examined
in detail. In the course of this work, one
system was created that uses digital
micromirrors and that was subsequently
built into the L-LAB test vehicle as a fullyfunctional prototype. Test drives proved
that the active lighting of the traffic zone
achieved by this system indeed managed
to overcome the contradiction between
good visibility and low glare.
despite fluctuating coefficients of friction.
The drum brake's self-amplifying effect is
dependent on the coefficient of friction
between brake lining and brake drum and
also determined by geometrical values.
Since the coefficient of friction cannot be directly influenced, it seemed
appropriate to adapt the brake's geometry. By means of an additional actuator to
change the position of an adjusting lever
the brake shoe factor can be maintained
at a constant value independent on the
variation of the coefficient of friction. A
key challenge consists in designing the
brake in such a way that the actuator
needs to perform as little work as possible
when adapting the brake geometry.
A first prototype of an adaptive drum
brake was built in cooperation with the
Chair of Design and Drive Engineering
(Prof. Dr.-Ing. D. Zimmer) and experimentally studied on the test bed that his
department operates. The experimental
findings show that a high and constant
shoe factor can be achieved with duoservo drum brake that had been developed.
The glare-free traffic-zone lighting system
which Jacek Roslak and Rainer Kauschke developed is based on an active DMD headlight
(Digital Micromirror Device) in combination
with a predictive sensor.
Lighting intensity in the eye-point of an on-coming driver when using dimmed, full-beam and
active headlights
Braking test bed
Supported by
Optical Concepts for Active Lighting
Technology Systems
L-LAB
NRW Graduate School
Study of Self-Energising Mechanical Breaks
Contact:
Dipl.-Ing. Sebastian Wedman
E-mail: wedman@hni.upb.de
Phone: +49 (0) 5251|60 61 86
Fax: +49 (0) 5251|60 62 78
M. Sc. Khaled Mahmoud
E-mail: km@hni.upb.de
Phone: +49 (0) 5251|60 62 81
Fax: +49 (0) 5251|60 62 78
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Workgroup
Driver assistance systems
Automatic collision avoidance
Driver assistance systems for
vehicle guidance?
The development of sensors for motor vehicles is breathtaking. As an indirect consequence of quality improvements in safety
and driver assistance systems, the sensors
already installed in motor vehicles today
also make it possible to explore new fields
of application. Many environment recognition systems such as Adaptive Cruise Control (ACC) or Lane Departure Warning (LDW)
have already moved from concept into
modern motor vehicles. Another innovation
leap will come from merging sensor systems
equipped with radar, lidar, laser scanners
and cameras. Systems like the automatic
emergency brake which automatically slow
the vehicle down as soon as an accident
seems unavoidable already show that the
next generation driver assistance systems
are in the development respectively predevelopment stages.
Elastic band
tive, future vehicles could also act independently to prevent accidents in the event of
driver failure or overload. The communication between driver and vehicle could also
be reduced to the essential, analogously to
that between horse and rider, whereby the
driver would be relieved of much of the
workload.
How can “intelligent” vehicles
automatically prevent accidents?
In order to turn the above-outlined future
scenarios into reality, vehicles have to be
provided with an underlying intelligence
which enables them to independently navigate through traffic zones without collision.
As part of a doctoral project at the International Graduate School of Dynamic Intelligent Systems, methods are being developed
at the L-LAB on collision-free trajectory
planning. A highly-promising approach
involves so-called elastic bands which are –
virtually – placed ahead of a vehicle, much
like an insect's antennae, to sense out safe
paths though the traffic zone. An elastic
band is made up of massless nodes coupled
by means of spring potentials. Obstacles
identified by the environmental sensors are
provided with repelling potentials capable
of influencing the elastic band. The nodes
of the elastic band in the equilibrium state
form the base points for a collision-free
alternative path. In a final step, these can
be smoothed by means of suitable interpolation.
What comes after the automatic
emergency brake?
Supported by
L-LAB
Contact:
Dipl.-Ing. Thorsten Brandt
E-mail: Thorsten.Brandt@L-LAB.de
Phone: +49 (0) 5251|704 343 63
Fax: +49 (0) 5251|704 349 61
Jun.-Prof. Dr.-Ing. Thomas Sattel
E-mail: sattel@hni.upb.de
Phone: +49 (0) 5251|60 62 79
Fax: +49 (0) 5251|60 62 78
The next step involves drawing up systems
which besides intervening in a vehicle's longitudinal guidance also intervene in its lateral dynamics. Various approaches seem
possible here. An interesting vision is
described by the so-called H metaphor. This
compares the interaction between drivers
and future partly-autonomous vehicles with
the interaction between horse and rider.
Just as a horse does not collide with trees
or passers-by, even if the rider is inattenRoadmap of active safety systems
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69
Human Machine Interaction
User-centered design in motor vehicles
Recent technical innovations have made
it possible to develop driver assistance and
driver information systems in motor vehicles whose realisation still seemed inconceivable just a few years ago. Besides the
need to solve classical ergonomic problems,
it is also becoming increasingly necessary
to assess such systems. Driver assistance
systems, which are generally designed to
relieve the driver, do not inevitably result
in greater comfort and safety. For example,
very extensive driver relief may, in certain
situations, lead to driver underload, a state
that drivers find unpleasant. Moreover, a
feeling of greater safety can lead to more
risky driving styles. This is called risk compensation. Thus, the ergonomic frameworks
additionally have to be optimised if a truly
practicable system should be developed. For
example, an information system equipped
with a visual display will only be accepted
if the size and position of the monitor have
been properly chosen.
The Human Machine Interaction team
at the L-LAB addresses questions like these.
Standard algorithms are not yet available
for carrying out such appraisals. Rather,
these methods still need to be developed.
One of the workgroup's key responsibilities
involves the development and validation of
such methods. Empirical studies are performed in real test vehicles and in a driving
simulator. Besides behavioural observations
and interviews with test drivers, complex
data acquisition methods are used, such as
eye-tracking systems and devices which
measure psychophysiological parameters
like skin resistance, heart rate, etc.
Single data acquisition procedures
with test subjects frequently fail to provide
enough information for the appraisal of
driver assistance and driver information
systems. Rather, the drivers' learning
processes need to be taken into account.
In many cases, it is only possible to reliably
assess the use of systems like these after a
sufficiently long familiarisation period. And
this was indeed the approach taken in a
long-term study on the use of an infrared
night vision system. Part of this work also
involved optimising the ergonomic system
parameters. This showed that such a system
is extensively used by drivers and is suitable
for increasing traffic safety in critical situations. Infrared night vision systems are an
example of how innovative technical systems are able to find acceptance when
system conception and design adequately
take the human factor into consideration.
Test drive with an infrared night vision system
Recording eye movements during use of an infrared night vision display installed in the night driving simulator
Supported by
L-LAB
Dashboard for the night driving simulator with eyetracking system and prototype infrared night vision
display
Contact:
Dr. Jürgen Locher
E-mail: Juergen.Locher@L-Lab.de
Phone: +49 (0) 5251|704 343 68
Fax: +49 (0) 5251|704 349 61
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Workgroup
Parallel Computing
Parallel Computing
3D-Visualisation of the HNI building (Olaf Schmidt)
Reaching New Magnitudes Through the Efficient Use of Parallel
and Distributed Systems
Parallel and distributed computing is the key technology for
the solution of large, computationally intensive problems in
science and technology. The challenge is now to further
improve the capabilities of this technology, to develop the full
potential of applications and to open up new dimensions of
realization.
http://www.upb.de/cs/ag-monien/
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Parallel Computing
The provision of powerful computing performance is a key requisite for the implementation of complex systems and applications in science and technology. Today,
high-performance computers generally take
the shape of parallel computers. In such
systems, a complex task is not processed
by one single computer, but by several
computers simultaneously. These share the
workload in a similar way to an assembly
line or a large company with different business areas. The parallel computing performance can be produced both by a single
computer, comprised of several processors,
and by several computers, that are distributed at different sites and communicating
with each other.
The analysis and design of efficient
parallel and distributed computer architectures, the development of powerful methods of implementing applications on those
systems, and implementing prototypes of
those applications are essentially the areas
covered by the “Parallel Computing”
research area.
One major field of applications is that
of computer simulation by parallel computers. Expensive and time-consuming
test series, or dangerous experiments, can
increasingly be replaced by computer simulations. The visualisation of 3-dimensional
objects in real-time is of enormous relevance both to computer simulation and to
a wide range of other applications. The
necessary computing power can only be
provided by means of scalable parallel computers. Such great computing power is also
needed for solving decision-making problems in a wide variety of planning issues
such as how valuable resources can be
saved or systems used more efficiently in
traffic regulation. The methods, we develop,
are especially tested in the field of parallel
chess programming, which has a long tradition within our working group. Currently,
the parallel chess program Hydra is deemed
to be the strongest chess program of the
world. Hydra is financed by the PAL Group
of Companies from Abu Dhabi, is based on
programmable FBGA-cards, and our group
71
was significantly involved in its developing
process. Applications using parallel and distributed computing are also found in the
field of networked multimedia systems,
where memory and computing performance are made available “on demand”.
The parallel computer on which Hydra is implemented and two members of the developing team.
Against this background we are primarily
concerned with the following research
areas:
• The theoretical fundamentals of parallel
computing,
• the architecture and operation of parallel
and distributed computing systems,
• the use of parallel computing to solve
complex problems in science and technology.
The working group participates in numerous national and international funded projects, in which the results of research are
applied for solving practical problems of
the industrial partners. Conversely, the close
cooperation with the industrial partners
over and over again leads to new impulses
and questions stimulating our own research
activities.
With our teaching programs we aim to
provide the students with sound know how,
that is close to research, in the field of Parallel Computing, with comprised skills for
practical use and with experiences in real
projects.
At the international chess-festival
in Abu Dhabi Hydra run
against the multiple computer
chess world champion Shredder.
Hydra won the chess tournament against Shredder clearly with 5,5 to 2,5.
Hydra also won superior to any
other participants the international human-against-computer
team-chess-tournament in Bilbao.
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Workgroup
Load Balancing in Parallel and Distributed
Systems
Modelling the network as a graph. The load
amounts before executing the balancing are
displayed in the nodes. The numbers on the
edges represent the required minimal flow.
Randomized load balancing. Newly arriving jobs
are assigned to processors. First, a constant number of randomly chosen bins are checked before
the arriving ball is assigned to a processor.
Load balancing in large, distributed, non-cooperative networks. Several requests are sent to a cluster of machines. An efficient load balancing algorithm that assigns the requests to the machines
and thereby minimizes the total execution time is
desired.
Supported by
SFB 376-A3; FLAGS
Contact:
Dr. rer. nat. Robert Elsässer
E-mail: elsa@upb.de
Phone: +49 (0) 5251|60 66 90
http://www.upb.de/cs/elsa/
Load balancing is one of the key problems
that must be addressed to efficiently use
parallel and distributed computer systems.
A parallel application can be visually
described as a component-wise manufacturing process in industrial production. An
application ( = fabrication of an industrial
product) is divided in several subtasks
( = sub-products) and these subtasks are
executed on different processors ( = workers) of the parallel or distributed system.
Subtasks can either be run independently
from each other or, if required by the
underlying application, interdependencies
between them have to be obeyed. In the
latter case, the processors must use communication in order to exchange intermediate results. Summarized, the load balancing
problem aims at the following goals:
• The application's total execution time
should be minimized.
• All processors of the system should operate during the whole computation and
idle times should be avoided.
• The total load in the system should be
distributed equally and 'fair' among the
processors of the system.
• The communication overhead between
the processors should be minimized.
For several years, our research group has
studied efficient load balancing algorithms.
While we have analyzed the problem theoretically, we have also implemented the
resulting algorithms and tested them in real
world applications. We distinguish between
synchronous and asynchronous load balancing methods. In the synchronous case,
all processes involved in the computation
stop from time to time in order to balance
the newly generated load among them. In
contrast, the load distribution is performed
as a constant background process which is
performed simultaneously with the computations in the asynchronous case.
To obtain good mappings of the tasks to
the processors, several efficient methods
have been developed. In our research group
we have focused on analyzing local iterative
load balancing algorithms. Thereby, we distinguish between diffusion and dimension
exchange schemes. These two classes differ
in the topology's communication abilities.
Diffusion algorithms assume that a node of
a network can send and receive messages
to/from all of its neighbours simultaneously,
whereas dimension exchange does only use
pair wise communication with one neighbour after the other. We have determined
the exact convergence rate, the flow quality
as well as the behaviour of known diffusion
algorithms. However, the analysis of the
dimension exchange method is much more
complicated and its convergence rate has
only been determined for some simple
topologies so far.
Other load balancing approaches that
we consider are based on randomized
strategies and exchange load between
randomly chosen processors. Strategies
of interests are Bidding and Workstealing.
A somehow different approach is described
by so called 'balls into bins' games. In these
games, newly arriving jobs (balls) are evenly
assigned to the processors (bins). Hereby the
load of a constant number of randomly
chosen bins is checked before the newly
arriving ball is assigned to the processor
with the smallest load.
The load balancing algorithms we have
developed in our research group are integrated into real applications. Among them
is a distributed computer chess program, a
finite element method simulation tool and
image generation software. The resulting
feedback leads to further improvements of
our methods.
In the future, load balancing algorithms
for large, distributed and dynamic networks
should be developed. Here, non-cooperative
networks (such that the Internet) play a
very important role. In order to develop
efficient load balancing strategies for such
topologies, the use of sophisticated linear
algebraic and game theoretic methods is
required.
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Parallel Computing
73
Algorithmic Game Theory
The behaviour of large, time-variant systems is often determined by the actions of
autonomous agents. Typical examples are
road traffic systems or the internet: Selfish
agents, also called users, influence the
behaviour of the system, and thus the costs
incurred to other agents, by their private
behaviour. Each autonomous agent tries to
minimize its own private cost, while a central regulation would try to compute global
optimum system behaviour.
Dynamic systems like these are not centrally controllable. This is due to the size of
the systems and to the selfishness of the
users. In systems with selfish agents Nash
Equilibria represent stable states. A system
state is a Nash Equilibrium, if no agent can
improve its private costs by changing its
action, as long as all the other agents stay
with their actions.
There are two kinds of Nash Equilibria.
In pure Nash Equilibria agents choose an
action, in mixed Nash Equilibria agents
choose a probability distribution over all
their actions. The theorem of Nash states
that all games have a mixed Nash Equilibrium. It is an open problem whether there is
an efficient algorithm to compute mixed
Nash Equilibria.
A problem studied already in the 50's
of the last century is the following routing
problem. Car drivers move through a network of streets. Each car driver wants to
drive from some starting point to some
destination and may choose an arbitrary
route between the two nodes. The private
cost of a car driver is given as the time
necessary to drive along the chosen route.
This private cost depends on the routes
chosen by other drivers, since the time to
drive along a street increases with the
number of cars using this street. It is well
known that there exist networks, where the
selfishness of the drivers yields a bad global
behaviour. The famous Braess Paradox
shows, that this bad behaviour may be
incurred by building new streets. Another
recently studied system is a system for
selfish scheduling of jobs onto parallel
machines. The jobs are the selfish users
and choose a machine they want to be
computed on.
The worst possible decrease in global
system performance caused by the selfishness of the users is measured in terms of
coordination ratio, i.e. the maximum (over
all possible inputs) fraction of the optimum
global cost and the global cost of a worst
Nash Equilibrium.
Algorithmic game theory combines the
mathematics of game theory and the algorithmic methods to analyze systems with
selfish users. In the research group of Prof.
Monien the following questions are in the
centre of interest:
• The computation of Nash Equilibria
• The analysis of the coordination ratio
• The mechanism design problem: Create a
system of rules, e.g. by defining a payment function, for a dynamic system
with selfish users, such that the selfish
behaviour of the users drives the system
into a global optimum.
Many results have been obtained which
yield to a fundamental understanding of
dynamic systems with selfish users.
The challenges of the future are to
apply the fundamental results to existing
systems, like e.g. the shuttle systems of
the “Neue Bahntechnik Paderborn”, where
routing and scheduling problems for
autonomous shuttles must be solved.
Car drivers move through a network of streets as
autonomous agents. Each driver tries to optimize his
personal benefit (to arrive his destination as quick as
possible).
100 cars want from s to t. The use of streets
results in costs. 2 streets have fixed costs of 100
while the other 2 streets cause variable costs x
which are dependent on the number of users. The
Nash-Equilibrium is shown in red which also corresponds here to the global optimal solution.
An additional street is built, which is open to
traffic in both directions and causes 0 costs, so
the Nash-Equilibrium changes (red figures). However, the quality of the solution deteriorates. This
phenomenon is described as Braess-Paradoxon.
Supported by
SFB 376; FLAGS; Delis
A road traffic network as an example for a large,
time-variant system where the behaviour of this
system is determined by the actions of autonomous
agents (car drivers).
Contact:
Dr. rer. nat. Rainer Feldmann
E-mail: obelix@upb.de
Phone: +49 (0) 5251|60 67 20
http://www.upb.de/cs/obelix/
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Workgroup
Applied Physics/
Applied Physics/
Integrated Optics
Integrated Optics
The Applied Physics group (Prof. Dr. W. Sohler) is engaged in
the field of integrated optics. Lithium niobate is used as substrate material due to its excellent electro-, acousto- and nonlinear optical properties. A variety of optically and/or electrically controllable, miniaturized waveguide devices and optical
circuits are developed for applications in optical communication and optical metrology.
http://wwwhni.upb.de/ap/
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Applied Physics /Integrated Optics
75
The idea of integrated optics is to develop
miniaturized waveguide devices and complex optical circuits on a common substrate
using planar technologies well known from
integrated electronics. This goal is also pursued by the Applied Physics / Integrated
Optics group using lithium niobate with its
excellent electro-, acousto- and nonlinear
optical properties as substrate material.
Moreover, doping of lithium niobate with
laser-active ions (especially rare earths)
enables the development of integrated
optical amplifiers and lasers.
Current research topics are:
polarization-dependent group delay in
birefringent Ti:LiNbO3-waveguides
allow the development of so-called
polarization mode dispersion compensators (PMDCs). PMD causes the walk
off of the polarization components, of
which an optical pulse (bit) is composed.
Using a PMDC the PMD-history can be
reversed at the receiver side and in this
way an increased bit/error-ratio can be
avoided. This technique is currently
investigated in collaboration with Prof.
Noé within one project of the DFGresearch unit: Integrated optics in lithium niobate: new devices, circuits and
applications.
Technology
Low-loss integrated optical waveguides
fabricated by indiffusion of evaporated and
photolithographically defined Ti-stripes of
a few µm width provide the basis for the
development of all devices and circuits.
Further fabrication methods of microelectronics (e. g. evaporation, sputtering, …) are
used as well.
E. g. Fig. 1 shows the reflectivity of
dielectric mirrors for the mid-infrared
range, which have been directly deposited
onto the end faces of a Ti:PPLN-waveguide
to form the cavity of an integrated optical
parametric oscillator (IOPO) (see also projectpage 2). Moreover, the group developed
lithium niobate-specific technologies (e. g.
periodic poling of ferroelectric microdomains, selective chemical etching of microstructures for photonic devices (see Fig. 2),
holographic writing of photorefractive gratings, stoichiometry control using vapour
transport equilibration, etc.). These activities
are accompanied by advanced characterization techniques (e. g. optical, electrooptical
and scanning atomic force microscopy,
spectroscopy, …).
Nonlinear optical devices
Periodically poled Ti:LiNbO3 (Ti:PPLN) waveguides are the basis of efficient optical frequency converters in the near (NIR) and
mid (MIR) infrared spectral range. In the
NIR, nonlinear optical difference frequency
converters for wavelength shifting in future
reconfigurable, optical distribution networks
are developed (current cooperation with a
telecommunications industrial partner).
Nonlinear optical interactions can, moreover, be utilized to induce light controlled
temporal (de-) multiplexing and spatial
switching of several optical information
channels. Fig. 3 shows the end face of a
waveguide array structure which has been
investigated within the EU-funded project
ROSA to demonstrate such opto-optical
switching. Moreover, devices for optical
parametric amplification (OPA) und oscillation are under development. OPA, which
can be achieved at almost any wavelength
in the transparency range of lithium niobate, is regarded as an important method
for future photonic networks.
Erbium-doped lasers
The combination of erbium diffusion doping
with the intrinsic acoustooptical, electrooptical and photorefractive properties of
LiNbO3 enables the development of integrated optical lasers with attractive properties, such as actively Q-switched and modelocked lasers, DBR- and ring lasers (see project example). Acoustooptically tunable
lasers are of interest for optical networks
with dense wavelength division multiplexing. Moreover, the acoustooptically induced
frequency shift can be utilized for an
unusual but for metrology interesting laser
principle, the so-called frequency shifted
feedback laser. Lasers with written photorefractive (DBR-) gratings have, due to their
wavelength selective feedback, a very narrow emission linewidth, which is important
e. g. for interferometric measurement
methods.
Fig. 1: Reflectivity of a dielectric mirror for
MIR-IOPOs, optimized for the wavelength range
around 3 µm.
Fig. 2: Image of a ridge structure resolved by
atomic force scanning microscopy (contact
mode); the structure was fabricated by selective
etching of inverted ferroelectric micro domains,
in Z-cut lithium niobate.
Integrated electrooptics
The intrinsic electrooptical properties of
LiNbO3 enable the development of a wide
range of devices for applications in optical
communications and optical metrology.
Electrooptical polarization conversion and
Fig. 3: Image of the end face of a waveguide
array consisting of 101 coupled optical channels.
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Workgroup
Integrated Optical Ring Resonator and
Ring Laser
Introduction / Background
Fig. 1: Structure of a passive ring resonator with
Ti:LiNbO3 waveguide structure resp. a ring laser
with Ti:Er:LiNbO3 waveguide structure. The ring
diameter is 60 mm. The straight waveguides close
to the ring act as directional input-(pump) and
output (laser emission) couplers.
Passive ring resonators and active ring
lasers can both be used to measure rotational speeds utilizing the relativistic
Sagnac effect. Such sensors have already
been realized based on bulk-optical components. In particular, He-Ne-ring lasers have
reached a high degree of maturity and are
already widely used in aerospace navigation. The European Space Agency (ESA) is
strongly interested in miniaturized highly
stable laser gyroscopes. An integrated optical solution is expected to meet these
requirements and is therefore of particular
interest.
Ring resonators
Fig. 2: Photograph of the optically pumped ring
laser. The green fluorescence is from the erbiumdoped region of the ring (the “directional couplers” are in the undoped region).
Fig. 3: Laser power output (λL = 1602 nm)
as function of the input optical pump power
(λP = 1480 nm) measured at output port 1.
Contact:
Selim Reza
E-mail: sol_sr@physik.upb.de
Phone: +49 (0) 5251|60 22 48
Fax: +49 (0) 5251|60 34 22
http//:wwwhni.upb.de/ap/
Extremely low-loss Ti:LiNbO3 channel waveguides are the key element to fabricate ring
resonators of high quality (high finesse).
Due to the Sagnac effect the frequency
splitting of the two counter propagating
waves in the ring is proportional to the area
surrounded by the ring and the rotational
speed. Therefore, for this application ring
resonators with a large radius of curvature
have to be developed. The structure of our
integrated optical ring resonators is shown
in Fig. 1. The ring has a radius of 30 mm.
Two straight waveguides tangential to the
ring are acting as directional couplers for
input- and output coupling of light. In the
resonator, the light travels clockwise or
counter-clockwise depending on the input
port. Although the directional couplers are
not yet designed for optimized coupling, a
resonator quality factor (Q-factor: ratio of
resonance frequency to resonance width) of
2x106 has already been achieved experimentally.
Ring lasers
In order to develop ring lasers, ring resonators as outlined above have been fabricated on erbium-diffusion-doped substrates
for the first time. The upper straight waveguide permits input coupling of the pump
radiation into the ring. Due to an up-conversion process the erbium-doped waveguide emits a green luminescence during
optical pumping although the pump radiation of 1480 nm wavelength is invisible. The
higher the pump power, the stronger is the
green luminescence, which can be observed
very easily with the naked eye (see Fig. 2).
The erbium doped ring laser emits in the
so-called eye-safe infrared range at 1602
nm wavelength. Access to this radiation for
both counter-propagating directions of the
laser field is possible via the two ports of
the lower directional coupler. Part of the
clockwise travelling laser radiation is coupled to port 1, part of the counter-clockwise travelling light to port 2. In Fig. 3 the
power characteristics of the ring laser (output power at port 1 versus pump power) for
the clockwise travelling wave is shown.
Almost identical characteristics have been
measured for the counter-clockwise travelling wave at port 2. The output spectrum
has a width of approximately 0.7 nm and a
complicated fine structure which has not
yet been fully understood. To some extent
this structure is attributed to the coupling
of residual linear cavities (straight waveguides with residual end face reflectivity) to
the ring cavity. We are currently eliminating
this problem by special antireflection coatings and angled end face polishing of the
straight coupler sections.
Application as Rotation Sensor
Rotation of a ring resonator develops a difference between the optical path lengths
for the two counter-propagating waves in
the resonator. As a consequence the degeneracy between clock- and counter-clockwise
resonances is removed and a splitting proportional to the rotation speed happens.
In the passive ring cavity this splitting
can be sensed by resonance tracking. Alternatively, if the frequency of launched light
is adjusted to one edge of a cavity resonance then a change in rotation results in
an increase of the transmission (shift
towards the resonance peak) for one direction and a decrease of the transmission for
the other direction. In this way even a
detection of the rotation sense is possible.
The active ring laser reacts with a splitting of its emission frequencies which can
easily be detected by the beat signal if the
two resonant waves are superimposed on a
photo detector.
Both experiments are planned for the
near future. With appropriate signal processing a resolution limit for the rotational
speed in the range of 10°/h is expected.
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Applied Physics /Integrated Optics
77
Integrated Parametric Fluorescence Generators and
Oscillators for the Mid Infrared
Introduction / Background
Fluorescence Generators
In the mid-infrared (MIR) spectral range
(2µm < λ < 4µm) a lot of molecules have
characteristic absorption bands. Therefore,
spectroscopic investigations are increasingly
carried out in this spectral range. Examples
are the spectroscopic trace gas analysis
for monitoring green house gases in the
atmosphere or process control in the industry.
But the availability of light sources in
the MIR is very limited: most lasers are very
bulky, have low output power levels and a
narrow tuning range or have to be cooled
with liquid helium or nitrogen. Therefore
our goal is to develop a compact, tunable,
efficient, coherent light source in the MIR
which takes advantage of the nonlinear
optical parametric frequency conversion in
waveguide structures.
If Ti:PPLN waveguides, which are up to 90
mm long and about 20 µm wide (see Fig. 1),
are “pumped” with sufficiently high optical
power, two waves (so-called signal and idler
waves) are simultaneously generated. By
increasing the pump power the fluorescence will be strongly amplified (stimulated).
Via tuning the pump wavelength it is
possible to generate optical parametric fluorescence in the range 2.7 µm < λ < 3.5
µm. Using pulsed excitation (7 psec pulse
width) a pulse peak power up to a few mW
is generated.
Project
Within the framework of the research unit
“Integrated optics in LiNbO3: new devices,
circuits and applications”, supported by the
“Deutsche Forschungsgemeinschaft” (DFG),
integrated optical parametric fluorescence
generators (IOPGs) and -oscillators (IOPOs)
are developed. These devices take advantage
of the nonlinear optical properties of periodically poled Ti-indiffused lithium niobate
waveguides (Ti:PPLN).
For an effective nonlinear optical interaction high intensities are required. Due to
the guiding of the waves in a strip waveguide it is possible to maintain such high
intensities along the whole interaction
length without beam spreading due to diffraction.
This allows to achieve significantly higher efficiencies compared to devices of conventional optics.
A tunable narrowband semiconductor
laser is used as pump source, amplified by
an erbium doped fiber amplifier (EDFA). This
allows to achieve up to 2W cw-power in
the range 1530nm < λ < 1570nm.
Fig. 1: Photograph of an IOPO
Parametric Oscillators
If the fluorescence generator is inserted
into an optical cavity, feedback leads above
a certain threshold pump power level to
parametric oscillation. Pump wavelength
and periodicity of the PPLN-domain structure determine the emission wavelength
(Fig. 2). Such integrated optical parametric
oscillators were developed as singly resonant oscillator (SRO) and as doubly resonant oscillator (DRO). For these devices
either external dielectric mirrors are applied
or the mirrors are directly evaporated onto
the waveguide end faces (see also Fig. 2 of
portrait page 2). While a DRO is resonant
for signal and idler, in a SRO only one of
the two waves will be amplified. The doubly
resonant device (DRO) has a significantly
lower threshold of only 14 mW (Fig. 3)
which should allow pumping of the IOPO
with a semiconductor laser without an
additional fiber amplifier.
In the future synchronously pumped
oscillators for the generation of very short
MIR-pulses in the psec range will be developed. These will open new application
ranges, e.g. the study of dynamic processes
in molecular reactions.
Fig. 2: Measured (dots) and calculated tuning
characteristics for two IOPOs with a different
periodicity of the PPLN domain structure.
Fig. 3: Measured (dots) and calculated output
power of a doubly resonant IOPO.
Supported by
Contact:
Sergey Orlov
E-mail: sol_so@physik.upb.de
Phone: +49 (0) 5251|60 22 96
Fax: +49 (0) 5251|60 34 22
http://wwwhni.upb.de/ap/
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and Technology
and Technology
The seven liberal arts from the
Hortus deliciarum by the abbess
Herrad von Landsberg (1170)
Reflection on Science and Technology
Philosophical reflection on science and technology enlightens
the foundations and conditions of scientific and technical action,
it provides orientation on the methods and aims of these activities and supports its responsible use.
http://www-fakkw.upb.de/institute/philosophie/
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In the wide field of reflection on science
and technology, the team is above all
devoted to the logical and cognitive conditions of knowledge and scientific action.
The recent history of logic is one focus of
research. It is aimed at a reconstruction of
the development and differentiation of this
basic discipline of philosophy, leading to
Mathematical Logic and Proof Theory as
mathematical subdisciplines and to Theoretical Computer Science. This is seen in the
context of a dialogue between philosophy
and mathematics. The discussion on logic
among the mathematicians of the 19th and
early 20th century can be regarded as an
expression of attempts to overcome foundational problems having emerged in
mathematical practise. The mathematicians
could not expect much support in these
attempts by academic philosophers of that
time. Founding mathematics with the help
of a revised logic served therefore not really
a philosophical interest, but above all the
pragmatic interest to allow the mathematician an unrestricted working in his very
special field of competence.
Modern axiomatics, initiated by the
Göttingen mathematician David Hilbert
(1862-1943), can be interpreted in the
same sense. Hilbert’s foundational research
was quickly combined with logical considerations. A biography of Ernst Zermelo
(1871-1953), Hilbert’s first collaborator in
foundational issues and creator of axiomatized set theory, is going to be completed
at the chair.
79
The Database for the History of Logic
is an important tool for this research. This
bio-bibliographical archive with collection
of portraits is being built up in Paderborn
and open for all researchers interested in
the history of logic.
Another main focus lies in the field of
philosophy of Cognitive Science. Here, the
question of how we gain knowledge of
other people’s minds is addressed from a
philosophical perspective as well as from
the perspective of cognitive neuroscience.
Research is aimed at a neurophenomenological theory of the basis of social cognition and human self-consciousness. The
main hypothesis is that the development
of individual human self-consciousness is
dependent on the dynamic interactions
with other humans, mediated by empathy.
In teaching, the specific philosophical
way of asking questions and discussing
solutions is conveyed. The topical focus is
in theoretical philosophy, especially philosophy of science, epistemology and the philosophy of technology. An essential task is
to establish new courses, especially Practical Philosophy in teachers education and
participation in the B.A. programme in Cultural Sciences.
Peckhaus, V.: Hilbertprogramm
und Kritische Philosophie,
Göttingen: Vandenhoeck & Ruprecht 1990
Peckhaus, V.: Logik, Mathesis universalis
und allgemeine Wissenschaft,
Berlin: Akademie Verlag 1997
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Workgroup
Formal Languages as Universal Languages
and the Origins of Modern Logic
Leibniz’s sketch of a medal for presenting his
binary number system. The image of creation:
“Omnibus ex nihilo ducendis sufficit unum”
(“In order to derive everything from nothing,
the single is enough”)
In 1967 Jean van Heijenoort introduced an
influential distinction of types of logic: he
opposed logic as calculus and logic as language. Later this distinction was modified
by Jaakko Hintikka and Martin Kusch by
opposing language as calculus and language as universal medium. Both suggestions agree in granting universality only to
the second variation. This is justified with
the different roles of semantics in these
systems. In the logical calculus, e.g., in systems of the algebra of logic, semantics is
external, i.e., the systems have to be interpreted. In this resprect Hintikka speaks of a
model-theoretic standpoint. On the other
hand, in logical systems serving as universal
media like Frege’s Begriffsschrift semantics
is internal. These systems are languages
without interpretation, they do not even
allow interpretations.
Van Heijenoort and Hintikka arrived at
their distinctions by induction from the history of logic. Nowadays they are more and
more taken as criteria for evaluating logical
systems present in history. Their historical
starting point was Gottlob Frege’s rejoinder
to the criticism of the algebraist of logic
Ernst Schröder against his Begriffsschrift
(1879). Both, Frege and Schröder refer to
the distinction, attributed to Leibniz,
between lingua characteristica und calculus
ratiocinator. Both claim mutually that the
other had neglected the aspect of a universal language in his system by stressing the
calculus aspects. This indicates that the distinctions by van Heijenoort and Hintikka are
not only based on a short reading of the
historical discussions, but that they are also
highly problematic in systematical respects.
They restrict the concept of language in
such a way that universal aspects of formal
calculi get out of sight.
Therefore it seems to be necessary to
classify historically given formal languages
in respect to their universal features. Languages with external semantics should not
be excluded in advance. This becomes evident regarding Leibniz’s characteristica universalis, that didn’t aim exclusively at a
one-to-one correspondence between simple
concepts and signs (this would have lead to
a categorical system). Leibniz also aimed at
keeping the list of simple concepts as small
as possible in order to make the system
suitable for practical tasks. Leibniz not only
wanted to construct a (in fact utopian)
philosophical or rational language which
could provide all possible truths, but also a
system of operation types which could be
used to handle actual problems. And this
system was similar to algebraic systems
with external semantics.
Logical addition and logical multiplication.
E. Schröder: Der Operationskreis des Logikkalkuls,
Leipzig 1877, p. 6
Supported by
Antorchas-DAAD
Contact:
Prof. Dr. Volker Peckhaus
E-mail: volker.peckhaus@upb.de
Phone: +49 (0) 5251|60 24 11
Fax: +49 (0) 5251|60 37 44
G. Frege: Grundgesetze der Arithmetik, Vol. 1, Jena 1893, §47
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Self-Other Co-determination
When a mother smiles at her two month
old child, the child will smile back. In the
cinema, when Arnold Schwarzenegger is
falling out of the window from the third
level of a hotel, the audience will shrug
and utter “Ouch, that hurts”. From the first
days of our life, we are always surrounded
by and engage in interactions with other
humans. The question arises of how we
know when somebody is happy, or is having pain? How can we explain that an
infant, who never saw herself in a mirror,
responds with a smile to the smile of her
mother? More generally: How do we know
about the emotions and intentions of other
living beings?
In 1903, Theodor Lipps introduced the
notion of empathy into the systematic
research on our knowledge of the mental
life of others. Only recently, empathy
gained more attention in consciousness
studies. We now have a better understanding of the underlying mechanisms of our
empathic abilities (cf. Stamenov et al. 2002;
Adolphs 2003). The results of studies on the
perception of emotions and actions suggest
that there exist matching systems in the
human brain for emotional experience/perception and action execution/observation.
It has become an empirically plausible
hypothesis that perceiving somebody else
executing an action triggers activation of
our own motor representations and associated somatic responses. In turn, perception
of emotions in others triggers responses in
somatosensory cortices that correspond to
the way activations would occur if the
observer would feel the same.
The aim of the project is to develop a
theory of how these internal representations of intentions and emotions participate
in the generation of conscious experience.
It will be argued that consciousness is best
understood as a representational process by
which information is made globally available for further processing, thus generating
a phenomenal model of the world, the
organism itself, and the relation of the two
(cf. Metzinger, 2003).
Furthermore, we suggest to differentiate
between different types of conscious (phenomenal and intentional) content that covary with different levels of empathic abilities, arguing that, in standard configurations, social interaction is a necessary condition for the development of human selfconsciousness.
Brain activation in individuals who perceive
other persons hand-movements. Rizzolatti,
Fogassi & Gallese 2001
Brain activation in individuals
who perceive other persons in painful situations.
Jean Decety 2003
Contact:
Marcello Ghin, M.A.
E-mail: marcello.ghin@upb.de
Phone: +49 (0) 5251|60 23 13
Fax: +49 (0) 5251|60 37 44
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Workgroup
Graphic: R. Zinkhöfer
Text taken from: Friedrich von
Schiller – Why and for what reason
does one study universal history?
Inaugural lecture at the University
of Jena 1789.
Thinking and Language
Knowledge only becomes useful when it can be accessed
in a flexible manner that meets the needs at hand. A prerequisite for the development of computer programs that can
achieve this is knowledge about both human information
processing mechanisms and our ability to understand natural
languages. This is the focus of the research group in Cognitive Psychology.
http://wwwhni.upb.de/kp/
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Hybrid Models for the Description
and Simulation of Cognitive and
Linguistic Processes
With the help of trainable associative networks, various cognitive and linguistic abilities can be simulated. Previously, the
attempt had been made (with little success) to explain how these abilities arise
in terms of symbolic, rule-based processes.
Examples of such abilities include the disambiguation of words with multiple meanings through the use of context, the production of free associations in response to
given words and sentences, decision-making under uncertainty and the learning of
complex facts and interrelations.
Nevertheless, the range of potential
applications for these models remains limited due to the fact that they cannot take
into account the serial nature of language
and thinking. To solve this problem, we are
developing hybrid models in which the
interaction of simultaneously operating
modules can be described. These models
are being used for the solution of problems
in computational linguistics, the prediction
of the communicative effect of advertising
texts and the development of tutorial systems.
Research and Practical Application
Although the results of our research have
been successfully applied in various practical domains, these practical applications
are not the primary goal of our research.
As a university institute, it is our responsibility to develop knowledge fundamentals.
The future competitiveness of local industry will be highly dependent on institutes
of higher education continuing to carry
out basic research and train researchers
with the theoretical and methodological
knowledge that is also necessary for
applied research.
In the period covered by this report, the
research group in Cognitive Psychology
was working on the following projects:
83
The Simulation of Associative
Processes
From the statistical analysis of large
machine-readable corpora, the communicative effect of texts can be predicted.
The Computational Syntactic
Analysis of Natural Languages
The aim of this project is the creation of
programs, which are capable of determining the structure of arbitrary sentences,
even those with complex embedding.
Frequency Estimates
Intuitive estimates of the frequency of
event classes determines political, economic and private decisions. Which systematic
errors do we succumb to and how can they
be prevented?
Tutorial Systems
Effective CAI-Programs make use of knowledge about the problem representation and
learning mechanisms of the user.
Psychology can only be studied as a
minor subject in Paderborn. Our course
offering provides students from the Arts,
Science and Engineering faculties with a
systematic introduction to Cognitive Psychology and related fields such as Cognitive Science, Computational Linguistics and
Artificial Intelligence. Our courses are
attended by interested research students
from all disciplines.
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Workgroup
Language
Hybrid Systems for the Simulation of Linguistic Processes
The longterm goal of our psycholinguistic
and computer linguistic research is to create a system via which natural language
questions about the content of any stored
text can be answered. To achieve this, two
problems, among others, must be solved.
1. The identification of the sentence
structure of simple and compound sentences in German.
In general, this problem is dealt with by
tackling a small but linguistically interesting subset of the overall potential sentence
constructions. In this respect, we are following a “solid” approach: the program
should be able to analyse any text, even if
this means foregoing a thorough linguistic
analysis. With the programs that were
developed during the period covered by
this report, it is possible to identify the
main verb in any main clause and to break
down multiple embedded sentence constructions into their constituent parts.
2. The automatic identification of similarity and cohesion between concepts.
For this purpose we are making use of
auto-associative networks. These are
trained using large machine-readable corpora. Among other functions they can be
used to assign polysemous words to their
respective correct meanings on the basis of
context, to identify the referents of pronouns and to predict the communicative
effect of texts. The networks we are developing are being used in marketing, to solve
information retrieval problems and in linguistic data processing. During the period
covered by this report we developed and
implemented new and efficient algorithms
for the training of associative conceptual
networks and tested these empirically.
Moreover, we increased our collection of
machine-readable texts considerably, and
now have at our disposal what is, to our
knowledge, the largest corpus of German
language texts.
Sedlmeier, Peter; Betsch, Tilmann:
etc. frequency processing and cognition.
Oxford: Oxford University Press, 2002
Contact:
Prof. Dr. Manfred Wettler
E-mail: wettler@psycho.uni-paderborn.de
Phone: +49 (0) 5251|60 29 00
Fax: +49 (0) 5251|60 35 28
http://www-psycho.upb.de/zinki/psychologie.html
Associative structure of the concept “coffee”
(below left) of a positioning (centre) and a treatment
(above left). For learning the associative connections,
machine-readable texts consisting of 300 million
words in total were used.
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Thinking and Decision Making
Frequency Processing
Which cause of death is more common:
stomach cancer or road accidents? Most
people incorrectly presume road accidents
– why? Because they are more frequently
confronted with information about road
accidents than with similar reports about
stomach cancer. The processing of frequencies of occurrence is the basis for many
judgement and decision processes and
plays a decisive role in the learning of categories and causal relationships. In the current DFG-Project a central aspect of the
processing of frequencies is being examined in more detail: How can frequency
estimates be systematically influenced?
Admittedly, there are numerous findings
indicating that such influence is possible,
however, up till now the studies have been
rather unsystematic, and the explanations
for the observed effects are often of a
post-hoc nature. Our theoretical basis is a
self-developed hybrid model consisting of a
neural network and a production system
that is based on the theory of associative
learning. This model gives predictions
about when frequency of occurrence estimates are distorted and when they are in
accordance with actual facts. Three major
influences that can distort frequency of
occurrence estimates are currently being
examined in greater detail: the impact of
prior knowledge, the role of attentiondirecting processes during the encoding of
information and the influence of additional
information. In the period covered by this
report we carried out a series of experiments in which such predictions were successfully tested. The general goal is to create a precise, integrative process-model of
how frequency of occurrence estimates
arise. A model of this type could be used
for the prevention of judgemental errors,
which play an important role in economic
and political but also everyday decisions.
Where do decisions come from?
In economics decisions are explained as
outcomes of rational thinking: A person
who has to come to a decision assesses the
probabilities and the importance of all possible consequences and compares the
expected utilities of the different alternatives. Experiments of Kahnemann, this
year's Nobel prize winner for economics,
have shown that frequently decisions do
not correspond to this theory. We develop
models which explain decisions as the
result of associative learning (the rat
“decides” whether to go to the left or to
the right in the T-maze). By means of computer simulations we generate and test
predictions which different models of
learning make about decisions in experimental settings.
Sedlmeier, Peter: Improving statistical reasoning:
theoretical models and practical implications.
London: Lawrence Erlbaum, 1999.
Sedlmeier, Peter; Köhlers, Detlef:
Wahrscheinlichkeiten im Alltag.
Westermann, 2001.
Contact:
Prof. Dr. Peter Sedlmeier
E-mail: peter.sedlmeier@phil.tu-chemnitz.de
Phone: +49 (0) 371|531 64 31
Fax: +49 (0) 371|531 64 10
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Networking Strategies
The internet and the available services therein are constantly
evolving. This opens new areas of utilization for computers
and provides the user with a powerful yet more and more
complex tool to work with. However, it also makes the computer more vulnerable to attacks from hackers and malicious
software like viruses, worms, trojans or spyware. The security
of the local network, the connected clients and the stored
data, always was a central concern of the HNI networking and
administration group.
http://wwwhni.upb.de/rb/
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Tasks of the HNI Networking and
Administration Group
The central user management, the installation and maintenance of internet services
like mail, web, file and print services, the
backup of user data and the installation of
workstations used by the staff and students,
are the primary tasks for the networking
and administration group. At the moment
we provide support for Windows, Linux und
UNIX based workstations and servers.
Securing the network and all resources
therein has a top priority. Therefore we use
a firewall to protect the network from
attackers from the internet and installed a
virus scanner on all workstations. Incoming
mails are also scanned automatically before
they are delivered to the local mailboxes.
That is, why the recent attacks of worms
and viruses in the last months didn’t have
any effect on us.
Changes in 2004
One major change this year was the change
of Mr. Dipl. Ing. Christopher Odenbach from
the HNI network and administration group
to the Center for IT of the University of
Paderborn. His position is taken by Mr. Dipl.
Inform. Markus Hohenhaus since the 15th
of June.
By replacing the workstations for all
staff members, we were able to finally conduct a highly anticipated change this year.
The new hardware should be sufficient for
all tasks in the upcoming next few years.
Although we tried to consider the individual
requirements of all research groups for the
configuration of the workstations, we had
to find a compromise between performance
and reliability. We believe that the resulting
configuration will fulfill the requirements of
the staff members and the administration
alike. In the course of purchasing the workstations we were also able to buy new server hardware to increase the reliability and
performance of the existing services. The
new hardware will slowly replace the existing hardware and will also invent new services to our network. One, for example, will
be a central high available file service. This
will help us to get rid of the problem with
low storage space on the research groups
87
file servers. The new Windows Terminal
Server is also one of new servers and
together with the installation of Windows
Server 2003, has increased the performance
for terminal services significantly.
Software updates, Modifications
and the WWW
Regrettably not without interference of the
regular service, we had to rearrange the
room where our server hardware is placed.
This was necessary for the new hardware to
be integrated there. While installing the
new hardware we also rearranged the
cabling and installed new active network
components, which provides us with more
flexibility for future expansions in hardware.
The migration from a Windows 2000 to a
Windows 2003 domain also was a very
important step to increasing reliability and
compatibility between our Windows XP
workstations and the Windows servers.
Additionally the Windows 2003 server
improves the manageability of Windows
networks and the integration in heterogeneous network neighbourhoods like ours.
One major concern this year was, and
still is, the redesign of the HNI internet
presence. Together with the PR Team we are
working on a new fresh design for the web
pages which is orientated on the design of
this report. Along with the redesign we are
also working on the integration of the
internet presence in a content management
system. This will make the administration
and maintenance easier and will provide
our staff with new means for the creation
and publishing of new content. We plan to
have the majority of web pages ready for
deployment at the end of the first quarter
in 2005 with the rest of the internet presence following closely.
Space saving Arrangement of
the Server Systems Facility
New Server and Storage Systems of
the Heinz Nixdorf Institute
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• Publications
• Fairs/Conferences/Seminars
• Patents
• Prizes/Awards
• Additional Functions
• Spin-Offs
• Current Research Projects
• Current Industry Co-operations
• Scientific Co-operations
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Workgroups
Workgroup Business Computing, especially CIM
Publications
Dangelmaier, W.; Lessing, H.:Multiple lineare Regression – Ressourcenplanung in einem Logistiknetzwerk,
Beschaffung Aktuell (2003) 9, pp. 43–47.
Dangelmaier, W.; Pape, U.; Rüther, M.: Ein dezentrales
Planungs- und Steuerungssystem für die Beschaffung
von Sekundärbedarfen innerhalb der Supply Chain.
In: Spengler, Th.; Voss, St.; Kopfer, H. (Hrsg.): Logistik
Management. Prozesse, System, Ausbildung.
pp. 133–144. Heidelberg: Physica 2003.
Dangelmaier, W.: Technologie kann Planung nicht
ersetzen. Pictures of the Future – Zeitschrift für
Forschung und Innovation. Herbst 2003, pp. 26.
Dangelmaier, W.: Methodentransfer in den Maschinenbau. Scope 43 (2003) 10, pp. 94.
Dangelmaier, W.; Franke, H., Kösters, Ch.: Ontologien,
ein Überblick. WISU 33, 2004, 1, pp. 56–58.
Dangelmaier, W.; Pape, U.; Rüther, M.: Einsatz des
CoagenS-Behältermanagements bei Sedus Stoll.
Steuerungssystem bei Transportbehältern.
is-report 8 (2004) 1+2, pp. 48–49.
Dangelmaier, W.; Franke, H.; Klöpper, B.; Kösters, Ch.:
Synchronously communicating agents for parallel
improvements in transport logistics. In: Artificial
Intelligence and Applications AIA. Innsbruck, Austria,
15–19 Februar 2004.
Dangelmaier, W; Giese, H.; Klein, F.; Renken, H.; Scheideler, P.: Shared Experiences in Intelligent Transportation Systems. In 5th IFAC/EURON Symposium on
Intelligent Autonomous Vehicles. IFAC, Elsevier Science, 5–7 July 2004.
Dangelmaier, W.; Leichtnam, G.; Scheideler, P.;
Schmidt, A.: Knowledge Communication for Intelligent Mechatronic Systems. In: 4th Intern. ICSC Symposium on Engineering of Intelligent Systems,
Funchal, Portugal, 29 February–2 Mach 2004. ICSC
Interdisciplinary Research Canada, ICSC Academic
Press. 2004.
Dangelmaier, W.; Scheideler, P.; Schmidt, A.: Representing Knowledge of Hierarchical Mechatronic
Systems in Web-Ontologies. In: M. Hamza, editor,
Artificial Intelligence and Applications,
pages 571-576. IASTED, ACTA Press, Calgary, Canada,
16–18 February 2004.
Dangelmaier, W.; Uebel, M.; Helmke, St.; Spindler, Th.:
Outsourcing von Kundenservice-Leistung. Service
Level Agreements, Beispiel Wincor Nixdorf, Beschaffung Aktuell (2004) 3, pp. 42–45.
Dangelmaier, W.; Emmrich, A.; Gajewski, T; Heidenreich, J.: Ein Referenzmodell zur Beschreibung der
Geschäftsprozesse von After-Sales-Dienstleistungen.
In: Becker, J.; Delfmann, P. (Hrsg.): Referenzmodellierung. pp. 73–97. Heidelberg: Physica 2004.
Dangelmaier, W.: Collaborative-SCM als Schnittstellendefinition zwischen Kunde und Lieferant. In: Dangelmaier, W.; Kaschula, D.; Neumann, J. (Hrsg.): Supply Chain Management in der Automobil- und
Zulieferindustrie. pp. 9–66. ALB-HNI-Verlagsschriftenreihe Innovative Produktion und Logistik, Bd. 12.
Paderborn: Fraunhofer Anwendungszentrum Logistikorientierte Betriebswirtschaft 2004.
Dangelmaier, W.; Laroque, Chr.; Mueck, B.: Integration
interaktiver Benutzer in ein modulares Gesamtsystem
für digitale Fabriken. In: Dangelmaier, W.; Kaschula,
D.; Neumann, J. (Hrsg.): Supply Chain Management in
der Automobil- und Zulieferindustrie. pp. 149–158.
ALB-HNI-Verlagsschriftenreihe Innovative Produktion
und Logistik, Bd. 12. Paderborn: Fraunhofer Anwendungszentrum Logistikorientierte Betriebswirtschaft
2004.
Bock, St.; Dangelmaier, W.; Franke, H.: Einsatz wechselseitig asynchron und synchron kommunizierender
Agenten in der Transportplanung in: Dangelmaier, W.;
Kaschula, D.; Neumann, J. (Hrsg.): Supply Chain Management in der Automobil- und Zulieferindustrie.
pp. 401–416. ALB-HNI-Verlagsschriftenreihe Innovative Produktion und Logistik. Bd. 12. Paderborn:
Fraunhofer Anwendungszentrum Logistikorientierte
Betriebswirtschaft 2004.
Dangelmaier, W.; Pape, U.; Rüther, M.: Internetbasierte Steuerung von Transportbehältern handling
April 2004 (Heft 4/5) pp. 114–115.
Dangelmaier, W.; Emmrich, A.; Kösters, C.: Analyse der
Wirtschaftlichkeit und Umweltverträglichkeit dezentraler Energieversorgungssysteme in: ZfE Zeitschrift
für Energiewirtschaft 28 (2004) 1, pp. 45–53.
Dangelmaier, W.; Pape, U.; Rüther, M.: Systemunterstütztes Lieferantenmanagement in:
Wisu 33 (2004) 4, pp. 520–532.
Dangelmaier, W.; Franke, H.; Klöpper, B.; Scheideler, P.:
Agent-based Simulation of Transportation Nets. In:
Coelho, H.; Espinasse, B. (Hrsg.): 5th Workshop on
Agent-based Simulation. Lisboa, Portugal, 3–5 Mai
2004, pp. 174–179
Kriesel, C.; Dangelmaier, W.: A Model for the Strategic
Planning of Corporate Structures
In: Harvey, R. J.; Geraldi, J. G.; Adlbrecht, G. (Hrsg.):
Global Project and Manufacturing Management.
pp. 63–75. Universität Siegen 2004.
ISBN 3-00-013666-5.
Dangelmaier, W.; Bosau, J.; Mueck, B.; Pape, U.: Einsatz der SAP-Exchange-Infrastruktur bei Integrationsszenarien, Wisu 33 (2004) 7, pp. 919–925.
Dangelmaier, W.; Laroque, Chr.; Kriesel, C.; Mueck, B.:
Logistical Simulation of a Demand-driven Railway
System Using a Discrete Production Simulator.
(SCSC’04). In: Bruzzone, A.; Williams, E. (Hrsg.): Proceedings of the 2004 Summer Computer Simulation
Conference (SCSC’04) SCS, 2004 – Best Paper First
Runner-up Award, pp. 300–305.
Modelling and controlling decentralized logistics networks. (ASM’04). In: Proceedings of the International
Conference on Applied Simulation and Modelling,
Rhodes, Griechenland, Juni 2004.
Franke, H.; Dangelmaier, W.:A web-based MultiAgent-System for transportation Management to
protect our Natural Environment. Cybernetics and
Systems Volume 35 No. 7–8, Oct-Dec 2004,
pp. 627–638.
Busch, A.; Dangelmaier, W.; Pape, U.; Rüther, M.:
Marktspiegel Supply Chain Management Systeme:
Potentiale - Konzepte - Anbieter im Vergleich. Wiesbaden: Gabler 2003.
Dangelmaier, W.: Terminplanung mit Vorwärts- und
Rückwärtsterminierung. In: Koether, R. (Hrsg.):
Taschenbuch der Logistik. München: Fachbuchverlag
Leipzig in Carl Hauser Verlag 2003.
Dangelmaier, W.; Gajewski, T.; Pape, U.; Rüther, M.:
Die Optimierung unternehmensübergreifender
Prozesse durch den Einsatz von Multi-Agenten-Systemen im Supply Chain Management. In: Deckmann, H.
(Hrsg.): Supply Chain Management Strategien und
Entwicklungstendenzen in Spitzenunternehmen.
pp. 261–285. Berlin: Springer 2003.
Uebel, M.; Helmke, St.; Dangelmaier, W.: Change
Management: Ursachen und Möglichkeiten zur
Bewältigung von Widerständen bei CRM-Projekten.
In: Hippner, H.; Wilde, K. (Hrsg.): Management von
CRM-Projekten. Handlungsempfehlungen und
Branchenkonzepte. pp. 183–196. Wiesbaden.
Gabler 2004.
Dangelmaier, W.; Pape, U.; Rüther, M.: Agentensysteme für das Supply Chain Management. Grundlagen-Konzepte-Anwendungen. Wiesbaden: Deutscher
Universitäts-Verlag 2004.
Heller, F.: Wissensbasiertes Online-Störungsmanagement flexibler, hochautomatisierter Montagesysteme.
HNI-Verlagsschriftenreihe Band 129. Hrsg. von W.
Dangelmaier. Paderborn: Heinz Nixdorf Institut 2003.
Hamady, M.: Ein Ansatz zur Gestaltung des operativen Fertigungsmanagements innerhalb der Lieferkette
– Umsetzung am Beispiel eines Automobilzulieferers.
HNI-Verlagsschriftenreihe Band 132. Hrsg. von W.
Dangelmaier, Paderborn: Heinz Nixdorf Institut 2003.
Uebel, M.: Ein Modell zur Steuerung der Kundenbearbeitung im Rahmen des Vertriebsmanagements. HNIVerlagsschriftenreihe Band 134. Hrsg. von W. Dangelmaier. Paderborn: Heinz Nixdorf Institut 2003.
Uebel, M.: Helmke, St.; Dangelmaier, W. (Hrsg.): Praxis
des Customer Relationship Managements. Branchenlösungen und Erfahrungsberichte. 2. Auflage Wiesbaden: Gabler 2004.
Mueck, B.; Dittmann, N.: Marktanalyse: MaterialflussSimulatoren. ALB-HNI-Verlagsschriftenreihe Band 11.
Hrsg. von W. Dangelmaier, Paderborn: FraunhoferAnwendungszentrum für Logistikorientierte Betriebswirtschaft 2003.
Dangelmaier, W.; Kaschula, D.; Neumann, J. (Hrsg.):
Supply Chain Management in der Automobil- und
Zulieferindustrie. ALB-HNI-Verlagsschriftenreihe
Innovative Produktion und Logistik Bd. 12. Paderborn:
Fraunhofer Anwendungszentrum Logistikorientierte
Betriebswirtschaft 2004.
Busch, A.; Dangelmaier, W.: Integriertes Supply Chain
Management. Theorie und Praxis effektiver
unternehmensübergreifender Geschäftsprozesse.
2. Auflage. Wiesbaden: Gabler 2004
Dangelmaier, W.; Mueck, B.; Laroque, Chr.; R Mahajan,
K.: d3FACT insight: A Simulation-Tool for multiresolution material flow modells. In: Lipovszki, György;
Molnár, István (Hrsg.): Simulation in Industry –
16th European Simulation Symposium (ESS2004)
SCS – Europe, 2004, pp. 17–22
Dangelmaier, W.; Scheideler, P.; Brüggemann, D.:
Solving Conflicts in Knowledge Communication
Processes in a Multi-Agent Scenario. In: International
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Conference on Modelling, Simulation and Optimization. Kauai, USA, 17–19 August 2004
Dangelmaier, W.; Laroque, Chr.; Mueck, B.; Renner, P.:
Interaktionsmechanismen zur kooperativen Simulation von Materialflusssimulationen. In: Mertins, Kai;
Rabe, Markus (Hrsg.): Experiences from the Future New Methods and Applications in Simulation for Production and Logistics, Fraunhofer IRB Verlag, 2004,
pp. 433–441
Dangelmaier, W.; Scheideler, P.: Solving Route Planning Problems with Experiences. In: International
Conference on Applied Simulation and Modelling.
Rhodes, Greece, 28–30 Juni 2004
Modelling and controlling decentralized logistics networks. In: APPLIED SIMULATION AND MODELLING
(ASM04). Rhodes, Greece, 28–30 Juni 2004
Emmrich, A.; Dangelmaier, W.; Ihnen, F.; Rogaischus,
A.: Services in the German automotive supplier
industry. In: Gustafsson, Anders; Brown, Stephen W;
Johnston, Robert; Edvardsson, Bo (Hrsg.): Service
Excellence in Management: Interdisciplinary Contributions Bd. 1 Service Research Center – CTF, 2004
Dangelmaier, W.; Laroque, Chr.; Mueck, B.; Renner, P.:
Improved Process Planning by a Material Flow Simulation with Multi-User-Support. In: Baake, Uwe F.;
Herbst, Joachim; Landeghem, Rik van (Hrsg.): 11th
Annual European Concurrent Engineering Conference
2004 (ECEC) EUROSIS, 2004, pp. 59–63
Dangelmaier, W.; Laroque, Chr.; Mueck, B.; Fischer, M.;
Kortenjan, M.: Guidance of Users in Interactive 3DVisualisations of Material Flow Simulations. In:
Schulz, Thomas; Schlechtweg, Stefan; Hinz, Volkmar
(Hrsg.): Simulation and Visualisation 2004. Magdeburg: SCS European Publishing House, 4.–5. März
2004, pp. 73–83
Franke, H.; Dangelmaier, W.; Klöpper, B.; Kösters, C.:
Synchronously communicating agents for parallel
improvements in transport logistics. In: Artificial
Intelligence and Applications AIA. Innsbruck, Austria,
15–19 Februar 2004
Dangelmaier, W.; Pape, U.; Rüther, M.: Steuerungssystem für Transportbehälter/Heinz Nixdorf Institut,
2004. – Forschungsbericht
Fairs/Conferences/Seminars
6. Paderborner Frühjahrstagung – Supply-ChainManagement in the automotive and supllier industry
– unique selling proposition or cost catch
On April 15th, the 6th „Paderborner Frühjahrstagung“
took place at the Heinz Nixdorf Institute. This year
focused especially on the value-added chain of the
automotive and supplier industry. More transparent
markets leaded to challenge and improve existing
business process models. Innovative companies focus
on the improvement of their supply chain. They don’t
reagard themselves as single competitors, but as one
part of a cooperative chain, which only can be optimized en bloc. The critical question is, on which
developments has to be reacted.
Characteristic problems were raised in talks and discussions. More than 200 participants used the opportunity to inform themselves about research, theory
and practical experience in 4 parallel sessions. Especially collaborative SCM was of a high interest.
91
Prizes/Awards
Best-Paper First Runner up Award of the Summer
Computer Simulation Conference 2004 (SCSC’04),
San Jose, California
Additional Functions
· Management of the Fraunhofer-Anwendungszentrums für Logistikorientierte Betriebswirtschaft (ALB)
· Member of advisory committee of Cartec Lippstadt
· Member of advisory committee of CentConsult
Pro.X GmbH
· Member of advisory committee of Paderborner
Center for Parallel Computing (PC2)
· Member of advisory committee of Bundesverbandes
Logistik (BVL)
· Head of Competence Center PPS-SCM-Systems,
EAI-Systems, Electronic Marketplaces and
CAS-CRm-Systems of the NetSkill AG
Spin-Offs
Dr. Ketterer
Dr. Ketterer deals with the development, construction, and introduction of branch solutions, especially
in co-operation with leading EDP and software producers. At that he draws on detailed SAP-experience.
Fraunhofer Center for Logistic-orientated
business management (ALB)
The ALB is concerned with all technological business
issues that occur with the creation and implementation of in-house and corporate production and logistics processes, and that can be solved by dint of innovative information technology.
NetSkill AG
The Net-Skill Inc. manages and markets competence
site, a coaching network for managers. It provides
reasonable prepared practice-tips, studies, articles,
and guidelines from highly qualified experts from the
fields of management, business systems, and law.
Pro.X GmbH
The Pro.X Ltd offers competent advise and application-support in the sector of process optimizing in
trade and industry. Starting from the process of service production an optimal workflow organization is
developed which functions as an widespread reorganization concept and which can come up to the
replacement of a PPS-system.
entrice GmbH
The entice GmbH supports its customers in the
development of individual software solutions from
application hosting in its own computer center to
the implementation of own software projects.
Furthermore special seminars are offered in the
areas e-business and mobility.
IPT Software GmbH
During the last years IPT developed in cooperation
with industry and science special methods to meet
the requirements for quality and productivity in the
highly automated manufacturing processes. In addition to new software products IPT’s work contains
consulting, guidance and individual support at the
customer.
Current Research Projects
CoagenS – Adaptive production networks in
series manufacturing
CoagenS is meant to support production planning
and controlling in production networks via multiagent-systems to provide significantly improved
results compared to PPS- and SCM-systems
employed today. CoagenS unifies industrial enterprises as users, software-houses as product developers
and the HNI as their universitary partners. Supporting
institution: BMBF
SFB 376 “Massively Parallel Computing: Algorithms –
Design Methods - Applications”, project C2: “realtime, hierachical planing and control of networked
production systems ”
Goal of the research are online-planning and -control
systems for production and logistics, which are qualitative equal to offline-systems because of their parallel approach. Supporting institution: DFG
SFB 614: “Self-Optimizing Concept and Structure in
Mechanical Engineering“, project A2: “Behavior-orientated Self-Optimization“
Goal ist he formulation of a behavior-orientated selfoptimization. It dynamically adjusts the behavior of a
mechatronic system to its environment, without the
use of explicit models. Supporting institution: DFG
DFG program “modeling of production”, project “simulation of production chains and their dynamically
adjusted detail fort he use in a virtual environment”
Goal of the project ist he devepolment of a basis for
a simulation tool, in which the user is active part of
the simulation. Supporting institution: DFG
Project “Interdisziplinäre Forschungsarbeiten in den
Gebieten Modellierung und Simulation sowie Datenstrukturen und Algorithmen, Aktive Benutzerunterstützung zur Analyse von Materialflusssimulationen
in virtuellen Umgebungen, Datenstrukturen, Rendering- und Approximationsalgorithmen zur Darstellung
virtueller, geometrischer 3D-Szenen“ (computer-aided
analysis of material-flow-simulations in virtual environments). Supporting institution: DFG
Project “Rechnerunterstützte Konstruktion von
Systemen zur Lenkung der Fertigung” (computeraided construction fort he monitoring of the
manufacturing)
Goal of this project is a component library for the
configuration of a monitoring system based on the
model-based description of a production system.
Supporting institution: DFG
Graduiertenkolleg “Parallele Rechnernetzwerke in der
Produktionstechnik”
NRW-Graduate-School “Graduate School of Dynamic
Intelligent Systems“
Interdisciplinary cooperation project “Neue Bahntechnik Paderborn” NBP
Here the project group develops among other things
an agent-based, absolutely distributed operational
concept for an objective-adjusted traffic. Supporting
institution: North Rhine-Westphalia /University of
Paderborn
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92
Current Industry Co-operations
Pavone AG
Creation of business processes in the context of
client-server surroundings; Specifications SCM-systems; Development of a concept for a further developed expert-engine
BWM Werk Leipzig
Cooperation with the “Digitale Fabrik Werk Leipzig“
of the BMW Group, Plant Leipzig
Workgroups
Continental Teves AG & Co oHG
Expansion of production planning and -monitoring
with OOPUS-DPS for all European sites
Development of a tool fort he classification of the
supplier
Bombardier Transportation (Signal) Germany GmbH
Objective of the cooperation is the conception of
new operational concepts and the development of
supporting tools
arvato logistics services
simulation of a distribution center
Siemens Dematic
Method development for improving software engineering for warehouse-management-systems
Volkswagen AG
Development of an ontegrated scheduling software
fort he motor prduction of the plants Chemnitz &
Salzgitter
Knorr Bremse AG
Intention of the cooperation is the enhancement
of Knorr’s AG’s delivery reliability to 95%
Development of an e-learning portal for logistics
Degussa AG
DSS: Design and development of a Decision Support
System for optimisation und simulation of transport
chains
FIST: Design, development and introduction of a
freight-charge-information-system Development
of a location-information-system for storehouses
and distributors
Scientific Co-operations
Helwan University Cairo, Egypt
Prof. Dr.-Ing. M. Osman
Workgroup Computer Integrated Manufacturing
Publications
Balazova, M.: Methode zur Leistungsbewertung und
Leistungssteigerung der Mechatronikentwicklung.
Dissertation, Fakultät für Maschinenbau, Universität
Paderborn, HNI-Verlagsschriftenreihe, Paderborn,
2004
Bätzel, D.: Methode zur Ermittlung und Bewertung
von Strategiealternativen im Kontext Fertigungstechnik. Dissertation, Fakultät für Maschinenbau, Universität Paderborn, HNI-Verlagsschriftenreihe Band 141,
Paderborn, 2004
Brüseke, U.; Grafe, M.; Wortmann, R.; Scharfe, C.;
Westphal, H.: VARI - An Augmented Reality Interaction Device for Education- and Training-Applications.
In: Drews, P. (Hrsg.): Proceedings of Mechatronics&
Robotics 2004 (MechRob 2004 (IEEE)). 13.–15. September 2004, Sascha Eysoldt Verlag Aachen, 2004
Brüseke, U.; Grafe, M.; Wortmann, R.; Scharfe, C.:
Augmented Reality in der Aus- und Weiterbildung am
Beispiel der Montage von PC-Komponenten. In:
Gausemeier, J.; Grafe, M. (Hrsg.): Augmented und Virtual Reality in der Produktentstehung. HNI-Verlagsschriftenreihe, Band 149, Paderborn, 2004
Beier, D.; Fründ, J.; Matysczok, C.; Reimann, C.;
Rosenbach, W.; Stichling, D.: AR-PDA: Ein mobiles
Produktpräsentationssystem. In: Keil-Slawik, R.; Selke,
H.; Szwillus, G. (Hrsg.): Mensch&Computer 2004: Allgegenwärtige Interaktion. Oldenbourg Verlag, 2004
Dangelmaier, W.; Leichtnam, G.; Scheideler, P.;
Schmidt, A.: Knowledge Communication for Intelligent Mechatronic Systems. Proceedings of the
4th International ICSC Symposium on Engineering
of Intelligent Systems. 29. Februar – 2. März 2004,
Funchal, Portugal, ICSC Academic Press, 2004
Beier, D.; Fründ, J.; Matysczok, C.; Reimann, C.;
Rosenbach, W.; Stichling, D.: Einsatz der Technologie
Augmented Reality zur Präsentation technischer
Produkte. In: Müller, S.; Brunnett, G.; Goebel, M.
(Hrsg.): 1. Workshop Erweiterte und Virtuelle Realität,
GI-Fachgruppe AR/VR. 27.-28. September 2004,
Technische Universität Chemnitz, 2004
Dangelmaier, W.; Scheideler, P.; Schmidt, A.: Representing Knowledge of Hierarchical Mechatronic Systems in Web-Ontologies. In: Hamza, M. (Hrsg.): Proceedings Artificial Intelligence and Applications (AIA
2004). 16.–18. Februar 2004, Innsbruck, Österreich,
ACTA Press, Calgary, Canada, 2004
Binger, V.: Recognising the Challenges of the Future
and Managing the Business of Tomorrow. Proceedings
of the XV Congress on Machine Tool and Manufacturing Technologies. Band 15, Fundación de Investigación de la Máquina-Herramienta (INVEMA), 2004
Frank, U.; Giese, H.; Klein, F.; Oberschelp, O.; Schmidt,
A.; Schulz, B.; Vöcking, H.; Witting, K.; Gausemeier, J.
(Hrsg.): Selbstoptimierende Systeme des Maschinenbaus - Definitionen und Konzepte. HNI-Verlagsschriftenreihe, Band 155, Paderborn, 2004
Brüseke, U.; Grafe, M.; Wortmann, R.: Nutzenpotentiale von AR für die kombinierte virtuelle/reale
Rekonstruktion historischer Objekte. In: Rekonstruktion - Alternativen zur baulichen Wiederherstellung,
2004
Fründ, J.; Matysczok, C.; Ebbesmeyer, P.; Knobel, M.:
AR-PDA: Innovative Product Marketing for Innovative
Products. Proceedings of the International Status
Conference Virtual and Augmented Reality. Leipzig,
2004
Gausemeier, J.: Systematik der Fertigungsplanung im
Kontext virtueller Produktion. ZwF Jahrg. 99 (2004) 6
Gausemeier, J.: Die Szenario-Analyse als Basis für
Kompetenzmanagement. In: Rosenstiel, L. von; Pieler,
D.; Glas, P. (Hrsg.): Strategisches Kompetenzmanagement - Von der Strategie zur Kompetenzentwicklung
in der Praxis. Gabler, 2004
Gausemeier, J.: From Mechatronics to Self-optimizing
Concepts and Structures in Mechanical Engineering New Approaches of Design Methodology. International Journal of Computer Integrated Manufacturing, 2004
Gausemeier, J.: Mehr Wachstum und Beschäftigung
durch Forschung - Oder: An welchen Stellschrauben
man drehen muss. In: Bucher, J.; Hoeschen, H.; Linnemann, C. (Hrsg.): Paderborner Impulse - Persönlichkeiten geben Denkanstöße. Junger Verlag Paderborn, Paderborn, 2004
Gausemeier, J.; Bauch, J.; Radkowski, R.; Shen, Q.:
Eine Virtual Reality-basierte Entwurfsumgebung für
selbstoptimierende mechatronische Systeme. In:
Gausemeier, J.; Grafe, M. (Hrsg.): Augmented und Virtual Reality in der Produktentstehung. HNI-Verlagsschriftenreihe, Band 149, Paderborn, 2004
Gausemeier, J.; Bauch, J.; Radkowski, R.; Shen, Q.:
A Virtual Reality-based Design Environment for SelfOptimizing Mechatronic Systems. In: Drews, P. (Hrsg.):
Proceedings of Mechatronics &Robotics 2004
(MechRob 2004 (IEEE)). 13.–15. September 2004,
Sascha Eysoldt Verlag Aachen, 2004
Gausemeier, J.; Berger, T.: Ideenmanagement in der
strategischen Produktplanung - Identifikation der
Produkte und Geschäftsfelder von morgen. Konstruktion, September 9- 2004
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Gausemeier, J.; Binger, V.; Dreher, C.; Kinkel, S.:
WZM 20XX - Initiative für die Werkzeugmaschine
von morgen. ZwF Jahrg. 99 (2004) 4
Gausemeier, J.; Eckes, R.; Gerdes, K.-H.: Graphisch
interaktive Projektierung von Materialflusssteuerungen. Industriemanagement 20 (2004) 3
Gausemeier, J.; Frank, U.; Redenius, A.; Steffen, D.:
Development of Self-Optimizing Systems. In: Drews,
P. (Hrsg.): Proceedings of Mechatronics&Robotics
2004 (MechRob 2004 (IEEE)). 13.–15. September
2004, Sascha Eysoldt Verlag Aachen, 2004
Gausemeier, J.; Frank, U.; Schmidt, A.; Scheideler, P.;
Steffen, D.: Eine Entwurfsmethodik für selbstoptimierende Systeme. In: Gausemeier, J.; Wallaschek, J.
(Hrsg.): Intelligente mechatronische Systeme. HNIVerlagsschriftenreihe Band 145, Paderborn, 2004
Gausemeier, J.; Frank, U.; Schmidt, A.; Vöcking, H.:
Domänenübergreifende Spezifikation der Prinziplösung selbstoptimierender Systeme. Tagungsband
zum 2. Gemeinsamen Kolloquium Konstruktionstechnik - Produktentwicklung und Product Lifecycle Management, 2004
Gausemeier, J.; Fründ, J.; Grafe, M.; Matysczok, C.:
Augmented Reality as a New User Interface for the
Layout Planning of Manufacturing Systems. In: Ong,
S. K.; Nee, A. Y. C. (Hrsg.): Virtual and Augmented
Reality in Manufacturing, Springer Verlag, 2004
Gausemeier, J.; Fründ, J.; Matysczok, C.; Radkowski, R.:
Cooperative Design Support within Automobile
Advance Development using Augmented Reality
Technology. Proceedings of the 8th International
Conference on Computer Supported Cooperative
Work in Design. Xiamen, China, 2004
Gausemeier, J.; Fründ, J.; Matysczok, C.; Reimann, C.;
Rosenbach, W.: An Augmented Reality User Interface
for Wearable Computing. Proceedings of the 1st
International Forum on Applied Wearable Computing
IFAWC 2004. Bremen, 2004
93
Design Conference Design 2004. 17–20 Mai 2004,
Dubrovnik, 2004
Gausemeier, J.; Lindemann, U.; Schuh, G. (Hrsg.):
Planung der Produkte und Fertigungssysteme für die
Märkte von morgen – Ein praktischer Leitfaden für
mittelständische Unternehmen des Maschinen- und
Anlagenbaus. Frankfurt/M., VDMA Verlag, 2004
Gausemeier, J.; Matysczok, C.; Mueck, B.: Einsatzpotenziale der Technologie Augmented Reality Interaktive Modellierung und Analyse von Materialflusssimulationen. ZwF Jahrg. 99 (2004) 1-2
Gausemeier, J.; Michels, J. S.: Entwicklung und
Fertigung mechatronischer Systeme. In: Otti-Kolleg,
(Hrsg.): Mechatronik - Funktions- und kostenoptimierte Systemlösungen. Otti Kolleg, 2004
Gausemeier, J.; Michels, J. S.: From Mechatronics to
Self-Optimization. Proceedings of the O.M.P. - International Trade Fair for Optical and Microtechnology
Products. 25-27 Mai 2004, Nürnberg, 2004
Gausemeier, J.; Michels, J. S.; Peitz, T.; Bigl, T.: Integrative Development of three-dimensional Electronic
Devices. Proceedings of the 6. International Congress
- Molded Interconnect Devices. Research Association
Molded Interconnect Devices 3-D MID e.V., 2004
Gausemeier, J.; Michels, J. S.; Peitz, T.; Marheine, C.: A
Development Environment for Spatial Electronic
Devices in Telecommunications and Network Applications. In: Ferrer, J.; Aguilar, J. (Hrsg.): International
Conference on Cybernetics and Information Technologies, Systems and Applications Bd. 1. International Institute of Informatics and Systemics, 2004
Gausemeier, J.; Michels, J. S.; Orlik, L.; Redenius, A.:
Modellierung und Planung von Produktentstehungsprozessen. In: Mechatronischer Systementwurf. Verein Deutscher Ingenieure, VDI-Berichte, Düsseldorf,
2004
Gausemeier, J.; Grafe, M. (Hrsg.): Augmented&Virtual
Reality in der Produktentstehung. HNI-Verlagsschriftenreihe Band 149, Paderborn, 2004
Gausemeier, J.; Michels, J. S.; Redenius, A.: Modellierung und Planung von Produktentstehungsprozessen. In: Gausemeier, J.; Wallaschek, J. (Hrsg.):
Intelligente mechatronische Systeme. HNI-Verlagsschriftenreihe Band 145, Paderborn, 2004
Gausemeier, J.; Grafe, M.; Matysczok, C.: Effizientes
Produktionsmanagement durch kontextsensitive
Bereitstellung produktionsrelevanter Informationen
auf mobilen Endgeräten. In: Dangelmaier, W.; Kaschula, D; Neumann, J. (Hrsg.): Supply Chain Management
in der Automobil-Zulieferindustrie. ALB-HNI-Verlagsschriftenreihe Band 12, Paderborn, 2004
Gausemeier, J.; Müller, W.; Paelke, V.; Bauch, J.;
Radkowski, R.; Shen, Q.: Lösungselement-basiertes
Virtual Prototyping von selbstoptimierenden mechatronischen Systemen. In: Schulze, T.; Schlechtweg, S.;
Hinz, V. (Hrsg.): Proceedings of the15th Conference
Simulation and Visualization 2004. 4.-5. März 2004,
Otto-von-Guericke Universität Magdeburg, 2004
Gausemeier, J.; Grafe, M.; Matysczok, C.; Radkowski,
R.: PC-Cluster für die Visualisierung von hochpolygonalen 3D-Modellen in Augmented Reality-Anwendungen. In: Gausemeier, J.; Grafe, M. (Hrsg.): Augmented und Virtual Reality in der Produktentstehung.
HNI-Verlagsschriftenreihe, Band 149, Paderborn, 2004
Gausemeier, J; Müller, W; Paelke, V; Bauch, J; Shen,
Q.; Radkowski, R.: Virtual Prototyping Of Self-Optimizing Mechatronic Systems. Proceedings of the 8th
International Design Conference Design 2004. 17–20
Mai 2004, Dubrovnik, 2004
Gausemeier, J.; Lindemann, U.; Braun, T.; Orlik, L.;
Vienenkötter, A.: Ein Vorgehensmodell zur strategischen Produkt- und Prozessplanung in kleinen und
mittleren Unternehmen. Konstruktion, März 3-2004
Gausemeier, J.; Lindemann, U.; Braun, T.; Orlik, L.;
Vienenkötter, A.: Design support by improving
method transfer - a procedural model and guidelines
for strategic product planning in small and mediumsized enterprises. Proceedings of the 8th International
Gausemeier, J.; Schmidt, A.; Frank, U.; Steffen, D.:
Towards a Design Methodology for Self-Optimizing
Systems. Proceedings of the 14th CIRP Design Seminar 2004. 16–18 Mai 2004, Cairo Egypt, 2004
Gausemeier, J.; Shen, Q.; Bauch, J.: A Solution
Elements based Cooperative Assembly System for
Mechatronic Virtual Prototyping. Proceedings of the
8th International Conference of Computer Supported
Cooperative Work in Design, Band 2. 26.–28. Mai
2004, Xiamen, China, 2004
Gausemeier, J.; Vienenkötter, A.: Strategische Produktund Technologieplanung - systematische Entwicklung
von Produkt- und Produktionssystemenkonzeptionen.
Tagungsband 11. Internationales Produktionstechnisches Kolloquium PTK 2004. 28.–29. September 2004,
Berlin, 2004
Gausemeier, J.; Wallaschek, J. (Hrsg.): Intelligente
mechatronische Systeme. HNI-Verlagsschriftenreihe
Band 145, Paderborn, 2004
Gehrke, M.; Steffen, D.: Systematischer rechnerunterstützter Entwurf selbstoptimierender Systeme.
Proceedings of the Symposium Design for X.
Lehrstuhl für Konstruktionstechnik, Universität Erlangen-Nürnberg, 2004
Gehrke, M.; Steffen, D.; Tichy, M.: Optimizing the
Principle Solution for Mechatronic Systems. In:
Drews, P. (Hrsg.): Proceedings of Mechatronics&
Robotics 2004 (MechRob 2004 (IEEE)). 13.–15. September 2004, Sascha Eysoldt Verlag Aachen, 2004
Grafe, M.; Matysczok, C.; Ebbesmeyer, P.; Krumm, H.:
Visualization of Complex Automotive Assembly
Sequences on Mobile Devices. Proceedings of the 1st
International Forum on Applied Wearable Computing
IFAWC 2004. Bremen, 2004
Grienitz, V.: Technologieszenarien – Eine Methodik
zur Erstellung von Technologieszenarien für die
strategische Technologieplanung. Dissertation,
Fakultät für Maschinenbau, Universität Paderborn,
HNI-Verlagsschriftenreihe Band 151, Paderborn, 2004
Jania, T.: Änderungsmanagement auf Basis eines integrierten Prozess- und Produktdatenmodells mit dem
Ziel einer durchgängigen Komplexitätsbewertung.
Paderborn, HNI-Verlagsschriftenreihe, Paderborn,
2004
Koch, M.; Kleinjohann, B.; Schmidt, A.; Scheideler, P.;
Münch, E.; Gambuzza, A.; Oberschelp, O.; Hestermeyer,
T.: Neuro-Fuzzy Approaches for Self-Optimizing Concepts and Structures of Mechatronic Systems. Proceedings of the International Conference on Computing, Communications and Control Technologies
(CCCT2004). Austin, Texas, USA, 2004
Saskevic, A.; Münch, E.; Gambuzza, A.; Oberschelp, O.;
Hestermeyer, T.: Neuro-Fuzzy Approaches for SelfOptimizing Concepts and Structures of Mechatronic
Systems. Günne, Mai 2004
Köckerling, M.: Methodische Entwicklung und Optimierung der Wirkstruktur mechatronischer Produkte.
Paderborn, HNI-Verlagsschriftenreihe Band 143,
Paderborn, 2004
Matysczok, C.: Augmented Reality - Chances and
Potentials of a new Man-Machine-Interface. Proceedings of the International Digital Media Conference.
Cairo, 2004
Matysczok, C.: Dynamische Kantenextraktion – Ein
Verfahren zur Generierung von Tracking-Informationen für Augmented Reality-Anwendungen auf Basis
von 3D-Referenzmodellen. Dissertation, Fakultät für
Maschinenbau, Universität Paderborn, HNI-Verlagsschriftenreihe, Paderborn, 2004
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Matysczok, C.; Ebbesmeyer, P.; Krumm, H.; Maciej, J.:
Efficient Creation of Augmented Reality Content by
using an Intuitive Authoring System. Proceedings of
the ASME 2004 Design Engineering Technical Conferences and Computers and Information in Engineering
Conference, Salt Lake City, USA, 2004
Matysczok, C.; Grafe, M.; Wojdala, A.: A Scalable PCCluster Architecture for Highly Polygonal Augmented
Reality Applications. Proceedings of the ACM SIGGRAPH 2004. Los Angeles, USA, 2004
Matysczok, C.; Radkowski, R.; Berssenbrügge, J.: ARBowling: Immersive and Realistic Game Play in Real
Environments Using Augmented Reality. Proceedings
of the ACM SIGCHI International Conference on
Advances in Computer Entertainment Technology
ACE 2004, Singapur, 2004
Möhringer, S.: A Standardising Approach to describe
and to compare Design Models for Mechatronics.
Proceedings of the 8th International Design Conference Design 2004. 17.–20. Mai 2004, Dubrovnik, 2004
Münch, E.; Oberschelp, O.; Hestermeyer, T.; Scheideler,
P.; Schmidt, A.: Distributed Optimization of Reference
Trajectories for Active Suspension with Multi-Agent
Systems. Proceedings of the 18th European Simulation Multi-Conference (ESM). 13.–16. Juni 2004,
Magdeburg, 2004
Orlik, L.: Wissensbasierte Entscheidungshilfe für die
strategische Produktplanung. Dissertation, Fakultät
für Maschinenbau, Universität Paderborn, HNI-Verlagsschriftenreihe, Paderborn, 2004
Redenius, A.; Steffen, D.: Ein Instrumentarium zur
Planung von Produktentwicklungsprozessen. Proceedings of the Symposium Design for X. Lehrstuhl für
Konstruktionstechnik, Universität Erlangen-Nürnberg,
2004
Schäfer, W.; Wagner, R.; Gausemeier, J.; Eckes, R.: An
Engineer’s Workstation to Support Integrated Development of Flexible Production Control System. In:
Ehrig, H.; et al. (Hrsg.): Integration of Software Specification Techniques for Applications in Engineering.
Springer Verlag, 2004
Scheideler, P.; Schmidt, A.: On Learning from Past
Experience as a Meta-Methodology for the Application of Self-Optimizing Working-Principles within
Complex Hierarchical Mechatronic Systems. Proceedings of the 4th International ICSC Symposium on
Engineering of Intelligent Systems.
29. Februar – 2. März 2004, Funchal, Portugal, ICSC
Academic Press, 2004
Scheideler, P.; Schmidt, A.: On the use of Case-Based
Working-Principles of Self-Optimization for Intelligent Shuttle Transportation Systems. In: Hamza, M.
(Hrsg.): Proceedings Artificial Intelligence and Applications (AIA 2004). 16.–18. Februar 2004, Innsbruck,
Österreich, ACTA Press, Calgary, Canada, 2004
Verein Deutscher Ingenieure (VDI): Entwicklungsmethodik für mechatronische Systeme. VDIRichtlinie 2206, Beuth-Verlag, Berlin, 2004
Workgroups
4th Innovation Workshop Strategic Product Planning
– Getting to know and use methods.
Conference for key business figures and decision
makers who are involved in forward-looking business
management. It contains an overview of innovation
processes as well as the discussion of success stories
and provides a systematic insight into the methods
and tools to strengthen innovative drive in companies; February 10 to 11, 2004, Glashuetten-Oberems
2nd Paderborn Workshop „Intelligent Mechatronic
Systems“
Workshop for specialists and executives from industry
and research institutes, who work decisivly on
research and development in sphere of future
mechanical engineering systems. A forum for discussion and the exchange of experience is offered. The
topics are new developments in sensor and actuators
technology, methods and software-tools for design,
application of Augmented Reality and Virtual Reality,
capability of adaption and self-optimisation as well
as the support of interdisciplinary cooperation.
March 25 to 26, 2004, Heinz Nixdorf MuseumsForum,
Paderborn
3rd Paderborn Workshop “Augmented & Virtual
Reality in Product Development”
Forum for developers and users from research and
industry for exchanging and discussing current
results in relation to basic principles and applications
of VR/AR technology. June 17 to 18, 2004, Heinz Nixdorf MuseumsForum, Paderborn
International Status-Congress “Virtual & Augmented
Reality”
The cooperative projects that are sponsored by the
BMBF introduced their results from “Virtual and Augmented Reality” to international experts and potential users. The project AR-PDA was one project among
others. February 19 to 20, 2004, Leipzig
Hannover Trade Fair
The BMBF presented outstanding results of current
research projects. The project AR-PDA introduced the
topic “Virtual and Augmented Reality”. April 19 to 24,
2004, Hannover
SMT/Hybrid/Packaging 2004
In cooperation with the Competence Network for the
Production of Microelectronics, the BMBF presented
selected cooperative projects. Experts from industry
and research institutes were introduced to the results
and prototypes of the project INERELA. June 15 to 17,
2004, Nürnberg
ACM SIGGRAPH 2004
A scalable PC-Cluster architecture for high polygonally Augmented Reality implementations was presented on the biggest Computergraphic-Congress of
the world. August 8 to 12, 2004, Los Angeles
IAA – International Motor Show Commercial
Vehicles 2004
The Heinz Nixdorf Institute enthused 250000 visitors
with an exhibit on the IAA International Motor Show
Commercial Vehicles. The institute was represented by
workgroup of Professor Gausemeier with a T5 Multivan Augmented Reality experimental platform. The
IAA was a great success for the main exhibitor:
“Berliner Kreis – Wissenschaftliches Forum für Produktentwicklung e.V.” September 22 to 30, 2004,
Trade Fair Hannover
1st Workshop “Erweiteret und Virtuelle Realität GI
Fachgruppe AR/VR”
Young scientists presented their research results of
“Augmented and Virtual Reality”. September 27 to 28,
2004, Technische Universität Chemnitz
· Member of the Board and General Manager of the
scientific society ”Berliner Kreis – Wissenschaftliches
Forum für Produktentwicklung e.V.”
· Initiator and Chairman of the supervisory board of
UNITY AG – public limited company involved in
company management and information technology
· Member of supervisory board of Sterling SIHI
· Member of “acatech – Konvent für Technikwissenschaften der Union der deutschen Akademien
der Wissenschaften e.V.”
Spin-Offs
FASTEC GmbH
FASTEC GmbH, founded in 1995, focuses on material
handling automation, especially on conveyor controls,
manufacturing execution systems and integration
services for assembly automation. Control solutions
realized by FASTEC are based on engineering tools
designed by the company itself. These tools improve
engineering efficiency and speed up the implementation of custom specific applications due to features
like configuration instead of programming and virtual
commissioning. Customers are found in highly innovative industries like electronic assembly, automotive
and medical technology. Ultimate flexibility, reliability,
process transparency and operator convenience are
important features of these solutions. One highlight
implemented in FASTEC´s engineering workbench is
virtual commissioning based on a 3D- conveyor system model, including all sensor and actuators and
animated with the control software for the real PLC.
Thus FASTEC gets their customers faster to production start.
Source: http://www.fastec.de
myview systems GmbH
myview systems GmbH , a former spin-off of UNITY
AG, specializes in effective product information management in e-business. The myview product family
offers cross-media publishing for complex products
and online information systems for project engineering and is a mature development platform for information management on the internet.
Source: http://www.myview.de
Scenario Management International AG –
ScMI AG
ScMI AG, founded in 1998, is a public limited company for company future design and strategic company
management. ScMI AG supports companies and
organisations in aligning to market and environment
changes, developing visionary strategies as well as in
the design and implementation of strategic management, innovations and forecast processes.
Source: http://www.scmi.de
UNITY AG
UNITY AG was founded in 1995 as a public limited
company for company management and information
technology. It develops strategies and processes for
industry and products that will capture the markets
of the future. UNITY AG specializes in forward-looking topics such as product innovation, virtual product
development and the digital factory. Besides the two
locations in Büren and Stuttgart, UNITY AG runs
national companies in Switzerland and Egypt.
Source: http://www.unity.de
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UNITY Solutions AG
UNITY solutions AG was founded as a subsidiary of
UNITY AG in 2001. The consultancy offer includes
process organization and all information and communication technology systems, which are currently
in use and which will be used in the future in modern
companies. UNITY solutions AG accompanies its customers in the successful transition to a global information society.
Source: http://www.unity-solutions.de
AR-PDA - A digital assistant for VR/AR content.
The AR-PDA is a hardware and software system for
mobile devices, such as mobile phones or PDAs,
which uses augmented reality technology to support
consumers when purchasing and using domestic
appliances.
Supporting institution: BMBF
SFB 614: Self-Optimizing Concepts and Structures in
Mechanical Engineering.
The aim is to explore the basic principles and potential of self-optimization, to verify the results using a
demonstrator and to support development using a
comprehensive development methodology. The faculty plays a leading role in the following subprojects
(SP): SP A2: Behaviour-based self-optimization; SP
B2: Design methodology; SP B3: Virtual prototyping.
Integrative Specification of Distributed Control
Systems for the Flexible Automated Manufacturing
(ISILEIT)
The purpose of the ISILEIT project is to develop
an integrated method for the design, the analysis
and the validation of distributed manufacturing
control systems. (DFG-SPP "Integration of software
specification techniques for engineering sciences
applications").
Integrative development of spatial electronic
components (INERELA)
The aim is to provide a suitable environment for
developing spatial electronic components in selected
product classes (internal connection system,
microsensor technique, electro-optical systems).
New Rail Technology Paderborn (Rail Cab)
The aim of the project is to develop a new type of
rail system that unites modern travel way technology
with the advantages of the Transrapid and the use
of existing rail lines. The activities focus on: development and visualization of vehicle and railroad depot
concepts.
Supporting institutions: State of North Rhine Westphalia / University of Paderborn
Strategic Product and Process Planning (SPP)
SPP specifies the products and processes for the markets of tomorrow. The aim is to put small and medium-sized companies in a position to organize their
strategic planning efficiently and to integrate this
area in the management process.
Virtual Nightdriver
The aim is to visualize the light distribution from new
headlamp prototypes in realtime and to evaluate the
results in the context of a night journey on a virtual
test route in the simulator.
Supporting institution: Lichtlabor (LLAB), Hella
Leuchten-Systeme GmbH (HLS)
95
WZM20XX – Initiative for the Machine-Tool of
Tomorrow – Strategy, Transfer, Effect-Analysis
The aim of the concomitant scheme to the
announcement “Werkzeugmaschine 2010” of
the German Federal Ministry of Education and
Research (BMBF) is the development of a szenariobased instrument that supports the strategic
planning in small and medium-sized enterprises.
The project is being accomplished in cooperation
with the Fraunhofer Institute for Systems and Innovation Research (ISI).
Mini Robot
The product development of miniaturized mechatronic systems is to be supported by a development
environment. The development environment shall
include procedure systematics, specification techniques, methods and software-tools. In the range of
the project, a demonstrator is being developed as a
miniaturized robot and produced as a prototype,
which, in a medium term, will serve as a research
platform for different tasks.
wearIT@work
The project wearIT@work researches and develops
industrialy-suited Wearable-Computing-Solutions for
the application fields of car production (Skoda),
maintenance of helicopters (EADS), hospital care
(gespag) and emergency intervention (the fire
department of Paris). It is nessessary for specialists of
this area to be supported directly in their working
processes with extreme mobile, or in clothes integrated, information- and communication systems.
Supporting institution: European Union
Current Industry Co-Operations
AR based prototyping in the vehicle pre-development
Today, real prototypes are used to design new vehicle
models. However, in many cases, no complete real
prototypes exist. Merely, partial components are
available. Other components such as auto body and
interior equipment are just available as 3D-Models in
the computer. Via an AR-system, virtual vehicle parts
are shown on real vehicle prototypes to support
reviews and to visualize design alternatives.
Customer: Volkswagen Nutzfahrzeuge AG
A Visit Inside a Computer (BIC)
The aim is to design and implement a multimedia
VR-AR exhibit for explaining the operating mode of
computers and the internet.
Customer: Heinz Nixdorf MuseumsForum
Conceptual Design in the Area of Motion Power
Engineering
Within the project, new principle solutions for the
free wheel of synchronous pumps with defined rotating direction were aquired in cooperation with the
client. Via the methods of TRIZ, common solutions
were analyzed. New principle solutions were developed and evaluated.
Customer: Hanning Elektro-Werke GmbH & Co.KG
MANTYS – New Business Models for the Machine
Tool Industry
Within the project, future scenarios for european
producers and -users of machine tools were acquired.
Customer: CECIMO – European Committee for Cooperation of the Machine Tool Industries
Scenario Project: Domestic Appliances
Within the project, scenarios of markets and business
environments were acquired for a leading producer
of domestic appliances. Based on this, the strategic
position is being reviewed.
Scenario Project IWKA Group
Within the project, scenarios of markets and business
environments for the producers of wrapping
machines were acquired. They provide a strategic
position for the customer and his associated and
holding companies.
Customer: IWKA AG
Mechanical Construction of a Stereo-Lithography
Tool
The aim was the conception of a prototype for a new
stereo-lithography method. This included the formulation of a catalog of requirements, the systematic
development of alternative function structures and
the formulation of multiple in-principle solutions.
Customer: F &S Stereolithographietechnik GmbH
Industry Analysis Air- and Air-Conditioning
Technology
The topic was the new positioning of the customer`s
business area. Therefore, air- and air-conditioning
technology and competitors were analyzed. With the
help of VITOSTRA, a conclusive strategic positioning
for the business area was aquired.
Customer: Company of air-conditioning technology
Project Advance Development
The aim of the project was to upgrade customer
innovation by building up an advance development.
Concepts were acquired, which allow, among other
things, to implement the processes of strategic product- and technology planning, which will enhance
the integration of product development and production system development.
Customer: Producer of electronic components
Potential Analysis of Laser Structuring
The topic is the potential analysis of the technology
laser structuring for products of the customer. This
includes the analysis of existing products in terms of
their functionality, design and manufacturing technologies used. Based on the assumption analysis,
solution concepts are developed as well as recommendations for action, which are based on the technology of direct-laser structuring.
Customer: Producer of electronic components
Competence Analysis
Within the project, the competencies of the customer
and their potential for development were analyzed.
The aim is to present product and service innovations
to the customer, which are based on already existing
as well as additional competencies. They turn to recommendations for action for a strategic competitive
positioning and for the required build-up of additional competencies.
Customer: Company of the automotive supply
industry
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Workgroups
Workgroup Computers and Society
Publications
Baumert, J.: StarOffice 4 Kids – Mitwachsende Software im Einsatz. In: Keil-Slawik, R.; Selke, H.; Szwillus,
G. (Hrsg.): Mensch & Computer 2004, Allgegenwärtige Interaktion. München: Oldenbourg Verlag, 2004,
199–208.
Bertelt, K.; Geißler, S.; Hampel, T.: Semantisch-räumliche Strukturierung von Wissen – neue Qualitäten
der kooperativen Wissenskonstruktion durch SVG. In:
Engels, G.; Seehusen, S. (Hrsg.): DeLFI 2004 – Die 2. eLearning Fachtagung Informatik, GI-Edition, Lecture
Notes in Informatics, 6.–8. September 2004, Paderborn, 361–362.
Bopp, T.; Hampel, T.: “Users and tools want to break
links” – a Novel Approach of Unbreakable Links in
WWW-based Hypertext Environments. Demonstration
and Poster Proceedings of the Fifteenth ACM Conference on Hypertext and Hypermedia, Hypermedia
2004, Santa Cruz, California, USA, August 9–13,
2004, 46–47.
Bopp, T.; Hampel, T.; Eßmann, B.: Connecting Virtual
Spaces – Shadow Objects as Key Elements for Weaving the Cooperative Space. In: Sixth International
Conference on Enterprise Information Systems, ICEIS
2004, Porto, Portugal, April 14–17, 2004, 475–479.
Hampel, T.: Spatial Structuring of Virtual Knowledge
Spaces – Bridging the Gap between Navigational
Maps and E-Learning. In: Uskov, V. (Hrsg.): Proceedings of the Seventh IASTED International Conference
on Computers and Advanced Technology in Education, CATE 2004, August 16–18, Kauai, Hawaii, USA,
veröffentlicht auf CD-ROM 428–029.
Hampel, T.; Bopp, T.: sTeam – a Platform for Structuring Information in Teams. Demonstration and Poster
Proceedings of the Fifteenth ACM Conference on
Hypertext and Hypermedia, Hypermedia 2004, Santa
Cruz, California, USA, August 9–13, 2004, 18–19.
Hampel, T.; Bopp, T.: Szenarien kooperativen Lernens
& Arbeitens über Servergrenzen hinweg. In: Engels,
G.; Seehusen, S. (Hrsg.): DeLFI 2004 – Die 2. e-Learning Fachtagung Informatik, GI-Edition, Lecture Notes
in Informatics, 6.–8. September 2004, Paderborn,
363–364.
Hampel, T.; Büse, D.; Ferber, F.; Xu, L.X.: Virtual Knowledge Structuring and Videoconferencing in a German-Chinese Teaching and Research Cooperation
Project. To appear in: E-Learn 2004, World Conference on E-Learning in Corporate, Government,
Healthcare and Higher Education, Washington, DC,
USA, November 2004.
Nowaczyk, O.: Explorationen und kooperative Explorationen – interaktive Medien für die Ausbildung in
technischen Fächern. In: Engels, G.; Seehusen, S.
(Hrsg.): DeLFI 2004 – Die 2. e-Learning Fachtagung
Informatik, GI-Edition, Lecture Notes in Informatics,
6.–8. September 2004, Paderborn, 399–400.
Schmidt, C.; Hampel, T.; Bopp, T.: We´ve got a mail! –
Eine neue Qualität der Integration von Nachrichtendiensten in die kooperative Wissensorganisation.
In: Engels, G.; Seehusen, S. (Hrsg.): DeLFI 2004 –
Die 2. e-Learning Fachtagung Informatik, GI-Edition,
Lecture Notes in Informatics, 6.–8. September 2004,
Paderborn, 211–222.
Schmidt, C.; Hampel, T.; Bopp, T.: We’ve Got Mail! –
A New Quality of Integrating E-Mail Services Into
Collaborative E-Learning Environments. To appear in:
E-Learn 2004, World Conference on E-Learning in
Corporate, Government, Healthcare and Higher
Education, Washington, DC, USA, November 2004.
3rd Paderborn eLearning Day
Demonstration of sTeam at the 3rd Paderborn
eLearning Day, Experiences Gained from the Use of
New Media in Education, 6.1.2004, Paderborn.
Eßmann, B.; Hampel, T.: A Whiteboard at Your Fingertips – Automatic Configuration of e-Learning Services
in Heterogeneous Network Environment. To appear
in: E-Learn 2004, World Conference on E-Learning in
Hampel, T.; Geißler, S.; Bertelt, K.: Spatial Knowledge
Organization in Cooperative Learning Environments –
Combining Shared Whiteboard Technology with SVG.
To appear in: E-Learn 2004, World Conference on ELearning in Corporate, Government, Healthcare and
Higher Education, Washington, DC, USA, November
2004.
1st Paderborner Airport Fair
Participation in the 1st Paderborner Airport Fair,
22.1.2004, Paderborn.
Eßmann, B.; Hampel, T.: Collaborative eLearning in
Real Places – Deploying Location Awareness for Faceto-Face eLearning Support. To appear in: E-Learn
2004, World Conference on E-Learning in Corporate,
Government, Healthcare and Higher Education,
Washington, DC, USA, November 2004.
Hampel, T.; Halbsgut, J.; Bopp, T.: Heterogeneous
Integration of Services into an open, standardized
Web Service, A Web Service-Based CSCW/L System.
In: Sixth International Conference on Enterprise
Information Systems, ICEIS 2004, Porto, Portugal,
April 14–17, 2004, 182–189.
CeBIT 2004 in Hannover
Participation in CeBIT, joint exhibition of the state of
NRW, 18.–24.3.2004, Hannover.
Eßmann, B.; Hampel, T.; Bopp, T.: A Network Component Architecture for Collaboration in Mobile Settings. In: Sixth International Conference on Enterprise
Information Systems, ICEIS 2004, Porto, Portugal,
April 14–17, 2004, 337–343.
Hampel, T.; Keil-Slawik, R.; Selke, H.: Semantische
Räume – Von der Navigation zur kooperativen
Wissensstrukturierung. In: Keil-Slawik, R.; Selke, H.;
Szwillus, G. (Hrsg.): Mensch & Computer 2004, Allgegenwärtige Interaktion. München: Oldenbourg
Verlag, 2004, 221–230.
Geißler, S.; Hampel, T.: Cooperative E-Learning – An
Approach for Combining Cooperative Learning
Processes with E-Learning Technologies. To appear in:
E-Learn 2004, World Conference on E-Learning in
Geißler, S.; Hampel, T.; Keil-Slawik, R.: Vom virtuellen
Wissensraum zur Lernumgebung – Kooperatives
Lernen als integrativer Ansatz für eine mediengestützte Bildung. In: Henseler W.; Herczeg, M.;
Oberquelle, H.; Prinz, W.: i-com: Zeitschrift für interaktive und kooperative Medien, Heft 2/2004, 5–12.
Hampel, T.: Computer Supported Cooperative
Learning – a Set of Theses. In: Society for Information
Technology and Teacher Education International
Conference, Vol. 2004, Issue 1, 2004, 937–944.
Hampel, T.: Virtuelle Wissensstrukturierung in einer
Deutsch-Chinesischen Lehr- und Forschungskooperation. In: Engelien, M.; Meißner, K. (Hrsg.): Virtuelle
Organisation und Neue Medien 2004, Reihe:
Telekommunikation @ Mediendienste, Lohmar, Köln:
Josef Eul Verlag 2004, 187–198.
Jeschke, S.; Keil-Slawik, R.: Next Generation in
eLearning Technology: Vom “Typografischen Objekt”
zum “Ausführbaren Prozess.” In: Rebensburg, K.
(Hrsg.): “Grundlagen Multimedialen Lehrens und
Lernens”. Alcatel SEL Stiftung für Kommunikationsforschung, Books on Demand:
Norderstedt, 2004, 35–46.
Keil-Slawik, R.; Baumert, J.: StarOffice 4 Kids:
Mitwachsende Software für den lernenden Nachwuchs. ForschungsForum Paderborn, 7/2004, 18–22.
Keil-Slawik, R.; Baumert, J.: StarOffice 4 Kids:
Mitwachsende Software für den lernenden Nachwuchs. PLAZ-Forum-Schriftenreihe Heft C-07-2004,
29–40.
Keil-Slawik, R.; Selke, H.; Szwillus, G. (Hrsg.): Mensch
& Computer 2004, Allgegenwärtige Interaktion.
München: Oldenbourg Verlag, 2004.
Learntec Karlsruhe
Participation in Learntec, joint exhibition of the state
of NRW, 10.–13.2.2004, Karlsruhe.
3rd Computer Science Day NRW
In a workshop at the 3rd Computer Science Day NRW
organised by the GI SIG “Education in Computer Science in NRW” together with the “Institute for Didactics of Computer Science and E-Learning” of
the University of Siegen, results from the project
“StarOffice 4 Kids” were presented to interested
teachers. 29.03.2004, University of Siegen.
Linux Days, Karlsruhe
Participation in the Linux Days, 23.–26.6.2004,
Karlsruhe.
Mensch & Computer 2004
Organisation and program chair of the joint conference “Mensch & Computer. 4. Fachübergreifende
Konferenz. Allgegenwärtige Interaktion” and “DeLFI.
2. Deutsche e-Learning-Fachtagung Informatik der
Gesellschaft für Informatik e.V.”, 5.–8.9.2004,
Paderborn.
Prizes/Awards
Outstanding Paper Awards for two contributions
The contributions of Geißler and Hampel as well as
Eßmann, Hampel, Bleckmann, and Sprotte received
outstanding paper awards at the World Conference
on E-Learning in Corporate, Government, Healthcare,
& Higher Education in Washington DC, USA.
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sTeam – Structuring of Information in a Team
sTeam is an Open Source approach to kooperative
knowledge organization. Infrastructures and methods
of structuring knowledge in groups, ranging from
document management to e-Learning are being
developed and evaluated.
open
Reinhard Keil-Slawik
· Co-editor of the journal “Erwägen – Wissen – Ethik”
(Deliberation – Knowledge – Ethics)
· Scientific Director of the “Education Quality Forum
NRW”
· Scientific Director of the “Sun Center of Excellence
for Learning Technology” in Paderborn
· Member of the board of trustees of the research
programme “Lernkultur Kompetenzentwicklung”
(Culture of Learning in the Development of Competence) hosted by BMBF
· President of the advisory committee “Lernen im
Netz und mit Multimedia (LiNe)” (Learning with the
Internet and Multimedia) hosted by BMBF
· Speaker of the expert group on technology of the
“Centrum für eCompetence in Hochschulen”
(Centre for eCompetence in Universities) NRW
· Member of the expert group on technology of the
Virtual University Bavaria
· Member of the advisory committee “TechnologieZentrum Informatik” (TZI, Center of Technology of
Computer Science), University of Bremen
· Member of the advisory committee of “IWF Wissen
und Medien GmbH” (IWF Knowledge and Media),
Göttingen
· Member of the research group “Schule und
Computer” (Schools and Computers), Paderborn
· Member of the Jury ExaMedia NRW 2004
Thorsten Hampel
· Consultant for the Virtual University Bavaria
· Consultant for the Ministry of Science and
Research NRW – Open Access Initiative Digital
Peer Publishing NRW
· Member of the expert group e-Learning for
the CDTF (Chinese-German Technical Faculty) in
Qingdao, China
· Member of the Jury for MEDIDA-PRIX of the GMW
· Consultant for the German Federal Ministry of
Education and Research, Directorate University,
Innovation and Reform of Studies
BID-OWL
In the project “Bildung im Dialog – OstwestfalenLippe” (BID-OWL) an internet-based working environment for educational use is being developed, which
allows a knowledge management through the Internet and co-operative learning within and across
schools.
Lernstatt Paderborn
Based on ultra thin client technology, a learning supportive IT infrastructure is installed for all schools
within Paderborn. This infrastructure is universally
accessible at all learning places while implementation
and administration remain affordable on a long-term
basis.
QuIC – Qualification in Internet Cafés at Schools
The goal of the project is to combine new forms of a
school related use of the Internet with new forms of
qualification for girls and women.
StarOffice 4 Kids
This project is concerned with the conception and
realization of a server-centered and web-based software infrastructure for students and teachers providing a universal desktop through the Internet.
open
ERWIN _ Developing deliberation components for
net-based discussions in virtual knowledge spaces
This interdisciplinary project brings together experiences and results from deliberation culture and
didactics with the concept of virtual knowledge
spaces. Deliberation methods will be further developed into tools and components for net-based discussions in virtual knowledge spaces.
StarOffice Software Entwicklung GmbH/kippdata
Informationstechnologie GmbH
Goal of the co-operation is the development
of a universal desktop through the Internet
(StarOffice 4 Kids), where administration,
application, and content are offered as services.
Sun Microsystems
For the first time Sun Microsystems has established
a “Center of Excellence for Educational Technology”
at the University of Paderborn. In this way, Sun
Microsystems honours the achievements of the
workgroup “Computers and Society” in building and
operating infrastructures which support learning
activities.
Weidmüller-Stiftung
In co-operation with the district government in
Detmold, a new platform is under development
for the realization and presentation of educational
projects (BID-OWL).
Unger, Welsow & Company GmbH
Co-operation in areas of software ergonomics and
web design in co-operation with other companies.
@FRIENDS GmbH & Co. KG Partner für
Kundenfindung und Kundenbindung
Co-operation in the design of a user interface for the
telemarketing system “tele)data SQL” and consulting
in the further development of the system.
OWL Maschinenbau
Implementation of a cross-company platform for
knowledge management and regional e-Learning
activities in mechanical engineering in Ostwestfalen
Lippe.
InnoZent OWL
Co-operation in the development of a regional
e-Learning competence center and the analysis and
evaluation of an NRW-wide search engine for further
education, funded by the Ministry of Economy and
Employment NRW.
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Workgroups
Workgroup Algorithms and Complexity
Publications
Klein, Jan; Krokowski, Jens; Fischer, Matthias; Wand,
Michael; Wanka, Rolf; Meyer auf der Heide, Friedhelm: The Randomized Sample Tree: A Data Structure for Externally Stored Virtual Environments. In:
PRESENCE 13 (2004), December, Nr. 6. – The MIT
Press, to appear
Klein, Jan; Zachmann, Gabriel: Point Cloud Surfaces
using Geometric Proximity Graphs. In: Computers and
Graphics 28 (2004), December, Nr. 6. – Elsevier,
to appear
Czumaj, Artur; Sohler, Christian: Sublinear-Time
Approximation for Clustering via Random Sampling.
In: Automata, Languages and Programming (ICALP),
2004 LNCS 3142 1, p. 396–407
Krokowski, Jens; Räcke, Harald; Sohler, Christian;
Westermann, Matthias: Reducing State Changes with
a Pipeline Buffer. In: Proceedings of the 9th International Fall Workshop Vision, Modeling, and Visualization, 2004
Bleckmann, Peter; Schomaker, Gunnar; Slowik, Adrian: Virtualization with Prefetching Abilities based on
iSCSI. In: Proceeding of International Workshop on
Storage Network Architecture and Parallel I/O, ACM
Press, 2004, p. 40–47
Bleckmann, Peter; Böttcher, Stefan; Cesnavicius, E.;
Freitas Francisco, Andre L. de; Hollerung, Tim; Kühnel,
Birger; Jing Liu, Michelle; Obermeier, S.; Oberthür,
Simon; Peter, Felix; Rammig, Franz; Schindelhauer,
Christian; Schomaker, Gunnar; Steenweg, Thorsten;
Abas Tarar, Qamar; Tiemeyer, Marcel; Thürling, Adelhard; Vater, Arne: The design of PaMaNet the Paderborn mobile ad-hoc network. In: Proceedings of the
second international workshop on Mobility management & wireless access protocols, ACM Press, 2004,
p. 119–121
Damerow, Valentina; Sohler, Christian: Extreme
points under random noise. In: Proceedings of the
12th European Symposium on Algorithms (ESA),
pp. 264–274, 2004
Rührup, Stefan; Schindelhauer, Christian: Traffic
and Hop Efficient Position-based Routing using a
Cell Structure / University of Paderborn.
2004 (tr-rsfb-04-075). – Forschungsbericht
Brinkmann, André; Salzwedel, Kay; Vodisek, Mario:
A Case for Virtualized Arrays of RAID. In: Proceedings
of the International Workshop on Storage Network
Architecture and Parallel I/Os SNAPI 2004. Antibes
Juan-les-pins, France, 30 September 2004, p. 9–16
Ziegler, Martin; Brattka, Vasco: Computability in
linear algebra. In: Theoretical Computer Science 326
(2004), p. 187–211
Nüsken, Michael; Ziegler, Martin: Fast Multipoint
Evaluation of Bivariate Polynomials. In: Susanne
Albers; Radzik, Thomasz (Hrsg.): Proc. 12th Annual
Symposium on Algorithms (ESA'04) Bd. 3221,
Springer-Verlag, 2004 (Lecture Notes in Computer
Science), p. 544–555
Salzwedel, Kay: Data Distribution Algorithms for
Storage Networks. Universität Paderborn, Heinz
Nixdorf Institut, Theoretische Informatik, 2004,
HNI-Verlagsschriftenreihe Bd. 153. – m 20,00
ISBN 3-935433-62-X.
Klein, Jan; Zachmann, Gabriel: Point Cloud Collision
Detection. In: Computer Graphics Forum (Proceedings
of EUROGRAPHICS 2004) 23 (2004), 30 August,
Nr. 3, p. 567–576
Ziegler, Martin: Computable operators on regular
sets. In: Mathematical Logic Quarterly (MLQ) 50
(2004), p. 392–404
Klein, Jan; Zachmann, Gabriel: Nice and Fast Implicit
Surfaces over Noisy Point Clouds. In: SIGGRAPH 2004,
Sketches and Applications, 2004
Volbert, Klaus: Experimental Analysis of Adjustable
Sectorized Topologies for Static Ad Hoc Networks. In:
DIAL M-POMC 2004 Joint Workshop on Foundations
of Mobile Computing, 2004
Schindelhauer, Christian; Volbert, Klaus; Ziegler,
Martin: Spanners, Weak Spanners, and Power
Spanners. In: Proc. of 15th Annual International
Symposium on Algorithms and Computation
(ISAAC 04), 2004
Leonardi, Stefano; Marchetti-Spaccamela, Alberto;
Meyer auf der Heide, Friedhelm: Scheduling Against
an Adversarial Network. In: Proc. 16th ACM Symposium on Parallelism in Algorithms and Architectures
(SPAA 2004), 2004
Bansal, Vikas; Meyer auf der Heide, Friedhelm; Sohler,
Christian: Labeling Smart Dust. In: 12th Annual European Symposium on Algorithms (ESA 2004), 2004
Klein, Jan; Zachmann, Gabriel: Proximity Graphs for
Defining Surfaces over Point Clouds. In: Eurographics
Symposium on Point-Based Grahics (SPBG'04), 2004,
p. 131–138
Meyer auf der Heide, Friedhelm; Schindelhauer,
Christian; Volbert, Klaus; Grünewald, Matthias:
Congestion, Dilation, and Energy in Radio Networks.
In: Theory of Computing Systems 37 (2004), May,
Nr. 3, p. 343–370
Brinkmann, André; Heidebuer, Michael; Meyer auf der
Heide, Friedhelm; Rückert, Ulrich; Salzwedel, Kay;
Vodisek, Mario: V:Drive - Costs and Benefits of an
Out-of-Band Storage Virtualization System. In: Proceedings of the 12th NASA Goddard, 21st IEEE Conference on Mass Storage Systems and Technologies
(MSST). College Park, Maryland, USA, 13–16 April
2004, p. 153–157
Bienkowski, Marcin; Korzeniowski, Miroslaw; Meyer
auf der Heide, Friedhelm: Fighting Against Two
Adversaries: Page Migration in Dynamic Network. In:
Proc. 16th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA 2004), 2004
Mueck, Bengt; Dangelmaier, Wilhelm; Laroque,
Christoph; Fischer, Matthias; Kortenjan, Michael:
Guidance of Users in Interactive 3D-Visualisations of
Material Flow Simulations. In: Schulz, Thomas;
Schlechtweg, Stefan; Hinz, Volkmar (Hrsg.): Simulation and Visualisation 2004. Magdeburg: SCS European Publishing House, 4–5 March 2004, p. 73–83
Czumaj, Artur; Sohler, Christian: Estimating the
Weight of Metric Minimum Spanning Trees in Sublinear Time. In: Proc. 36th ACM Symposium on Theory of
Computing (STOC), 2004
Damerow, Valentina; Sohler, Christian: Smoothed
Number of Extreme Points under Uniform Noise. In:
Proceedings of the 20th European Workshop on Computational Geometry (EWCG), 2004
Organization of the first meeting of all participants
of the EU Project DELIS, Paderborn, March 2004
Presentation of the project V:DRIVE at the booth
of "Research Country North-Rhine Westfalia"
(Forschungsland NRW) at the CeBIT 2004 in
Hannover
Presentation of the storage management system
V:DRIVE at the booth of CONET AG at the "Linux day"
in Karlsruhe, 2004
Presentation of the storage management system
V:DRIVE at the booth of Novell/Suse at the "LinuxWorld" fair in Frankfurt, 2004
Patents
Scheideler, C., Brinkmann, A., Salzwedel, K.,
Meyer auf der Heide, F., Rückert, U.:
Verfahren und Anordnung zur randomisierten
Datenspeicherung in Speichernetzwerken und/oder
einem Intranet und/oder dem Intranet sowie ein
entsprechendes Computerprogramm-Erzeugnis und
ein entsprechendes computerlesbares Speichermedium. AZ: DE 102 36 796
Brinkmann, A., Scheideler, C., Meyer auf der Heide,
F., Rückert, U.:Verfahren und Anordnung zur
Verteilung von Datenblockmengen in Speichernetzwerken und/oder einem Datennetz sowie Computerprogramm-Erzeugnis und computerlesbares
Speichermedium. AZ: DE 10 2004 018 808
Schomaker, G., Brinkmann, A., Meyer auf der Heide,
F., Rückert, U.: Verfahren zur Verwaltung von
Metainformationen zur Verteilung von Datenblöcken
über computerlesbare Speichermedien sowie
Computerprogrammprodukt und computerlesbares
Speichermedium. AZ: DE 10 2004 046 243
Prizes/Awards
Friedhelm Meyer auf der Heide together with
A. Brinkmann, C. Scheideler and U. Rückert received
the 3rd prize in the university contest "Patents
Inventor" (Patente Erfinder) 2004" for the strategy
"Redundant Share"
Rolf Wanka responded a call for a C3-professorship
in computer science ("Efficient Algorithms and
Combinatorial Optimization") on Nov 1 2004 from
the Friedrich-Alexander-University of Erlangen-Nürnberg.
Christian Schindelhauer received 2004 the research
award of the University of Paderborn "Development
of a wireless, energy efficient sensor network for
stocktaking exemplified in a retail shelf system"
(Entwicklung eines drahtlosen, energieeffizienten
Sensornetzwerkes zur Füllstandsbestimmung am
Beispiel eines Regalsystems im Einzelhandel)
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Friedhelm Meyer auf der Heide:
· President of the Heinz Nixdorf Institute
· Director of the DFG Collaborative Research Centre
SFB 376 “Massively Parallel Computing:
Algorithms – Design Methods – Applications“
· Initiator and Coordinator of the EU-Integrated
Project “Dynamically Evolving Large-scale Information Systems” (DELIS)
· Elected Reviewer of the DFG (German Research
Foundation)
· DFG Special Advisor (Vertrauensdozent) of the
· Member of the Board of External Scientific Advisers
(Fachbeirat) of the Max-Planck-Institute for Computer Science at Saarbrücken
· Director of the NRW-Graduate School of Dynamic
Intelligent Systems (one of three directors)
· Member of the Senate of the University of
Paderborn
· Assistant Chairman of the Paderborn Institute for
Scientific Computation (PaSCo)
· Managing Editor of “Journal of Interconnection
Networks (JOIN)“, World Scientific Publishing
· Editor of the dblp series Information Processing
Letters (IPL)
· Member of the program committee of the International Symposium on Algorithms and Computation
(ISAAC) 2004
· Member of the program committee of the 7th
Workshop Parallel Systems and Algorithms (PASA)
2004
· Member of the program committee of the International Symposium on Theoretical Aspects of Computer Science (STACS) 2005
Christian Schindelhauer:
· Member of the technical program committee of
the Workshop "MobiHoc", 2005
· Member of the program committee "Workshop on
Sensor Networks"; Workshop in the framework of
the 34th annual meeting of the society of GI
("German Association of Computer Science'') at the
University of Ulm, September 2004.
· Member of the program committee of the ACM
International Workshop on Mobility Management
and Wireless Access Protocols (MobiWac 2004), on
Algorithmic Aspects of Wireless Sensor Networks
(AlgoSensors) 2004, Philadelphia, PA, USA
· Member of the program committee of the First
International Workshop on Algorithmic Aspects
of Wireless Sensor Networks (AlgoSensors) 2004,
Turku, Finland.
· Member of the program committee of the International Symposium on Theoretical Aspects of Computer Science (STACS) 2004
· Exchange Coordinator of the partnership with
Carleton University, Ottawa, Canada, since October
2004
Rolf Wanka:
· Co-Chair of the Special Interest Group on Parallel
and Distributed Algorithms of the “Gesellschaft für
Informatik (GI)” (German Association of Computer
Science)
· Foreign Relationship Officer of the Institute of
Computer Science
· Exchange Coordinator of the partnership with
Carleton University, Ottawa, Canada, since October
2004
· Manager of the EU-Integrated Project “Dynamically
Evolving Large Scale Information Systems” (DELIS),
until October 2004
99
Valentina Damerow
· Manager of the EU-Integrated Project “Dynamically
Evolving Large-scale Information Systems” (DELIS),
since October 2004
DELIS
EU-Integrated Project “Dynamically Evolving Largescale Information Systems” (DELIS)
Supporting institution: European Union
SFB-376
DFG (German Research Foundation) Collaborative
Research Centre SFB 376
“Massively Parallel Computing: Algorithms – Design
Methods – Applications”
- Project SFB-376 A1 “Efficient Parallel Algorithms”
- Project SFB-376 A2 “Universal Basic Services”
- Project SFB-376 C6 “Mobile Ad-hoc Networks”
- Part Z (general management)
DFG-Netz
DFG Priority Program 1126 “Algorithms for
Large and Complex Networks” with the project:
“Algorithms for Large Dynamic Geometric Graphs”
DFG-System
DFG Research Training Centre (postgraduate program)
“Automatic Configuration in Open Systems”
Pasco-GK
DFG Research Training Centre (postgraduate program)
“Scientific Computation”
G-School
NRW Graduate School of Dynamic Intelligent
Systems
BAMSI
Project “Benutzerunterstützte Analyse von Materialflusssimulationen in virtuellen Umgebungen
(BAMSI)”
PReSto
Transfer Project “Paderborn Realtime Storage
Network (PReSto)”
GigaNetIC
DAAD funding within the IAS program for exchange
with Carleton University, Ottawa, Canada
In cooperation with the Infineon Technologies AG
(Munich), the BMBF project GigaNetIC aims at developing super fast low-loss digital MOS circuit technologies and systems for communication and network application. The main focus of our activities is
on basic techniques for system-on-a-chip architectures with special emphasis on communication protocol. Other participants in Paderborn are the
research groups of Prof. Ulrich Rückert and Prof. Uwe
Kastens.
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Workgroups
Workgroup Design of Distributed Embedded Systems
Publications
Beier, D.; Fründ, J.; Matysczok, C.; Reimann, C.; Rosenbach, W.; Stichling, D.: AR-PDA: Ein mobiles Produktpräsentationssystem, In Keil-Slawik, R.; Selke, H.;
Szwillus, G. (Eds.): Mensch & Computer 2004: Allgegenwärtige Interaktion, Oldenbourg Verlag, 2004
Beier, D.; Fründ, J.; Matysczok, C.; Reimann, C.; Rosenbach, W.; Stichling, D.: Einsatz der Technologie Augmented Reality zur Präsentation technischer Produkte. In Müller, S.; Brunnett, G.; Goebel, M. (Eds.):
1. Workshop Erweiterte und Virtuelle Realität
GI-Fachgruppe AR/VR, Technische Universität
Chemnitz, 27–28 Sep 2004
Bleckmann, P.; Bötcher, S.; Cesnavicius, E.; Freitas
Francisco, Andre L. de; Hollerung, T.; Kühnel, B.; Jing
Liu, M.; Obermeier, S.; Oberthür, S.; Peter, F.; Rammig,
F.; Schindelhauer, Ch.; Schomaker, G.; Steenweg, T.;
Abas Tarar, Q.; Tiemeyer, M.; Thürling, A.; Vater, A.: The
design of PaMaNet the Paderborn mobile ad-hoc network. In: Proceedings of the second international
workshop on Mobility management & wireless access
protocols, ACM Press, New York, NY, USA, 2004
Bleul, S.; Müller, W.; Schäfer, R.: Multimodal Dialog
Description for Mobile Devices, Italy, Gallipoli, 2004
Bobda, Ch.; Danne, K.; Ahmadinia, A.; Teich, J.: Generation of Distributed Arithmetic Designs for Reconfigurable Applications, In ARCS 2004 Organic and Pervasive Computing, Workshop Proceedings Bd. P–41.
Bonn, Köllen Verlag, 26 Mar 2004
Burmester, S.; Gehrke, M.; Giese, H.; Oberthür, S.:
Making Mechatronic Agents Resource-Aware to
Enable Safe Dynamic Resource Allocation. In Fourth
ACM International Conference on Embedded Software (EMSOFT'2004), 2004
Böke, C.: Automatic Configuration of Real-Time Operating Systems and Real Time Communication Systems for Distributed Embedded Applications. University Paderborn, Heinz Nixdorf Institute, HNI-Verlagsschriftenreihe Bd. 142., 2004
Bücker, M.; Gerling, J.; Keller, U.; Brahm, M.: Impedanzberechnung flächiger Versorgungssysteme
beliebiger Berandung. In 12. Internationale Fachmesse
und Kongress für elektromagnetische Verträglichkeit
(EMV 2004). Düsseldorf (Germany), 10–12 Feb 2004
Danne, K.: Operating Systems for FPGA Based Computers and Their Memory Management. In ARCS 2004
Organic and Pervasive Computing, Workshop Proceedings Bd. P–41. Bonn: Köllen Verlag (GI-Edition
Lecture Notes in Informatics (LNI)), 26 Mar 2004
Danne, K.: Memory Management to Support Multitasking on FPGA Based Systems. In Proceedings of
the International Conference on Reconfigurable
Computing and FPGAs (ReConFig04), Mexican Society
of Computer Science, SMCC, 20–21 Sep 2004
Danne, K.: Distributed Arithmetic FPGA Design with
Online Scalable Size and Performance. In Proceedings
of 17th SYMPOSIUM ON INTEGRATED CIRCUITS AND
SYSTEMS DESIGN (SBCCI04), ACM Press, New York,
NY, USA, pp. 135-140, 7–11 Sep 2004
Danne, K.; Bobda, Ch.: Dynamic Reconfiguration of
Distributed Arithmetic Controllers: Design Space
Exploration and Trade-off Analysis. In Proceedings of
the 11th Reconfigurable Architectures Workshop
(RAW'04), to appear IEEE Computer Society, 2004
Dittmann, F.; Rettberg, A.; Lehmann, T.; Zanella, M.:
Invariants for Distributed Local Control Elements of a
New Synchronous Bit-Serial Architecture. In Second
IEEE International Workshop on Electronic Desing,
Test and Applications (DELTA 2004). Perth, Western
Australia, p. 245-250, 28–30 Jan 2004
Gausemeier, J.; Müller, W.; Bauch, J.; Radkowski, W.;
Shen, T.; Paelke, V.: Lösungselement-basiertes Virtual
Prototyping von Selbstoptimierenden Mechatronischen Systemen in Virtual Reality. In Proceedings of
the Simulation and Visualisation 2004, Magdeburg.
Erlangen: SCS European Publishing House, 2004
Dittmann, F.; Rettberg, A.: A Self-Controlled And
Dynamically Reconfigurable Architecture. In Kleinjohann, B.; Gao, G.R.; Kopetz, H.; Kleinjohann, L.; Rettberg, A. (Eds.): Proceedings of IFIP Working Conference on Distributed and Parallel Embedded Systems
(DIPES'04). Toulouse, France: Kluwer Academic Publishers, 23–26 Aug 2004
Geiger, Ch.; Schmidt, T.; Stöcklein, J.: Rapid Development of Expressive AR Applications. In IEEE and ACM
International Symposium on Mixed and Augmented
Reality IEEE Computer Society, 2004
Ecker, W.; Esen, V; Steininger, T.; Zambaldi, M.: Mem.
Models for the Formal Verification of Assembler Code
Using Bounded Model Checking. In ISORC. Vienna,
2004
El-Kebbe, D.: On Satisfying Real-Time Constraints in
Real-Time Manufacturing Systems. In Proceedings of
the 11th Symposium on Information Control Problems
in Manufacturing. Salvador, Brasil, Apr 2004
Flake, S.: Towards the Completion of the Formal
Semantics of OCL 2.0. In 27th Conference on Australasian Computer Science (ACSC 2004), Dunedin,
New Zealand, Bd. 26(1), Australian Computer Science
Society, Sydney, Australia (ACM International Conference Proceeding Series, Australian Computer Science
Communications), p. 73–82, Jan 2004
Flake, S.: Enhancing the Message Concept of the
Object Constraint Language. In Sixteenth International Conference on Software Engineering and Knowledge Engineering (SEKE 2004), Banff, Canada, Knowledge Systems Institute, Skokie, USA, 20–24 Jun 2004
Flake, S.; Müller, W.: Past- and Future-Oriented Temporal Time-Bounded Properties with OCL. In Software
Engineering and Formal Methods (SEFM 2004), Beijing, China, Sep 2004, IEEE Computer Society Press,
2004
Flake, S.; Müller, W.: An ASM Definition of the
Dynamic OCL 2.0 Semantics. In UML 2004, Lisbon,
Portugal, Springer, Lecture Notes in Computer
Science, Oct 2004
Flake, S.; Müller, W.: Past- and Future-Oriented TimeBound Tempral Properties with OCL. In Proceedings of
the SEFM´04, Beijing, China. 2004
Flake, S.; Pape, U.; Ruf, J.; Müller, W.: Specification
and Formal Verification of Temporal Properties of
Production Automation Systems. In Final Documentation of the DFG Focus Area Programme 1064.
Springer, Lecture Notes in Computer Science, 2004
Freitas Francisco, A. L. de; Rettberg, A.; Hennig, A.:
Hardware Design and Protocol Specification for the
Control and Communication within a Mechatronic
System. In Kleinjohann, B.; Gao, G.R.; Kopetz, H.;
Kleinjohann, L.; Rettberg, A. (Eds.): Proceedings of IFIP
Working Conference on Distributed and Parallel
Embedded Systems (DIPES'04). Toulouse: Kluwer Academic Publishers, 23–26 Aug 2004
Gausemeier, J.; Müller, W.; Bauch, J.; Radkowski, W.;
Shen, T.; Paelke, V.: Virtual Prototyping Of Self-Optimizing Mechatronic Systems. In Tagungsband der
Design 2004 (Dubrovnik). Zagreb: Sveucilisna Tiskara,
2004
Geiger, Ch.; Schmidt, T.; Stöcklein, J.: Entwicklung
virtueller Kreaturen in 3D- und AR-Umgebungen. In
Virtuelle und Erweiterte Realität, 1. Workshop der GIFachgruppe VR/AR, Shaker Verlag, 2004
Geiger, Ch.; Stöcklein, J.; Schmidt, T.: Entwicklung
physikbasierter AR_Anwendungen mit Java. In Augmented & Virtual Reality in der Produktentstehung
Bd. 149, Heinz Nixdorf Institute, University Paderborn,
2004
Gerling, J.; Danne, K.; Bobda, Ch.; Schrage, J.:
Distributed arithmetics for recursive convolution
of optical intercannects. In EOS Topical Meeting,
Optics in Computing (OIC), p. 65–66, Engelberg
(Switzerland), Apr 2004
Giese, H.; Oberthür, S.; Potthast, Ch.; Redenius, A.;
Tichy, M.; Vöcking, H.; Witting, K.: Bericht des Arbeitskreises Sicherheit und Stabilität. Sonderforschungsbereich 614 - Selbstoptimierende Systeme des
Maschinenbaus. In: Arbeitskreis Sicherheit und Stabilität University Paderborn, 2004
Götz, M.: Dynamic Hardware-Software Codesign of a
Reconfigurable Real-Time Operating System. In International Conference on Reconfigurable Computing
and FPGAs 2004 (ReConFig04), Mexican Society of
Computer Science, SMCC, p. 330–339, 20–21 Sep
2004
Heimfarth, T.; Rettberg, A.: NanoOS – Reconfigurable
Operating System for Embedded Mobile Devices. In
International Workshop on Dependable Embedded
Systems (WDES). Florianopolis, Brazil, 17 Oct 2004
Ihmor, S.; Hardt, W.: Runtime Reconfigurable Interfaces – The RTR-IFB Approach, to appear. In Proceedings of the 11th Reconfigurable Architectures Workshop (RAW'04) IEEE Computer Society, 2004
Jensen, P.; Ecker, W.; Kruse, T.; Zambaldi, M.:
SystemVerilog: Interface based Design. In FDL. Lille,
France, 15–17 Sep 2004
Kardos, M.: Model Checking AsmL Specifications,
2004. – In 11th Workshop on Abstract State Machines,
ASM 2004, Lutherstadt Wittenberg,
Germany, 24–28 May 2004
Kardos, M.; Rammig, F.J.: Model Based Formal Verification of Distributed Production Control Systems. In
Ehrig, Hartmut (Ed.): Integration of Software Specification Techniques for Applications in Engineering.
Springer Verlag, LNCS 3147, p. 451–473, 2004
Kardos, M.; Zhao, Y.: Verification framework for UMLbased Design of Embedded Systems. In Proc. of IFIP
Working Conference on Distributed and Parallel
Embedded Systems (DIPES 2004), 2004
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Kleinjohann, B.; Gao, G.R.; Kopetz, H.; Kleinjohann, L.;
Rettberg, A.: Design Methods and Applications for
Distributed Embedded Systems. Kluwer Academic
Publishers. – Proceedings of the 18th IFIP World
Computer Congress – Stream on Distributed and
Parallel Embedded Systems (DIPES 2004), Toulouse,
France, Aug 2004
Oberthür, S.; Böke, C.: Flexible Resource Management
- A framework for self-optimizing real-time systems.
In Kleinjohann, B.; Gao, G.R.; Kopetz, H.; Kleinjohann,
L.; Rettberg, A. (Eds.): Proceedings of IFIP Working
Conference on Distributed and Parallel Embedded
Systems (DIPES'04), Kluwer Academic Publishers,
23–26 Aug 2004
Münch, E.; Gambuzza, A.; Oberschelp, O.; Hestermeyer,
T.: Neuro-Fuzzy Approaches for Self-Optimizing Concepts and Structures of Mechatronic Systems. In
International Conference on Computing, Communications and Control Technologies (CCCT 2004). Austin,
Texas, Aug 2004
Oesterdiekhoff, B.: Internet Premium Services for
Flexible Format Distributed Devices. In Proceedings of
IFIP Working Conference on Distributed and Parallel
Embedded Systems (DIPES'04). Toulouse, France:
Kluwer Academic Publishers, 23–26 Aug 2004
Saskevic, A.; Münch, E.; Gambuzza, A.; Oberschelp, O.;
Hestermeyer, T.: Neuro-Fuzzy Approaches for SelfOptimizing Concepts and Structures of Mechatronic
Systems. Günne, May 2004
Koch, M.; Oberschelp, O.: Simulation of self optimizing mechatronical systems with expert system knowledge. In Asian Control Conference (ASCC 2004).
Melbourne, Australia, Jul 2004
Krupp, A.; Müller, W.; Oliver, I.: Formal Refinement
and Model Checking of An Echo Cancellation Unit. In
Proceedings of the DATE04 Designers' Forum, Paris.
2004
Krupp, A.; Müller, W.; Oliver, I.: Combining Formal
Refinement and Model Checking for Analysis of Realtime Systems. In Grimm, Ch. (Ed.): Best of FDL'03.
Dordrecht: Kluwer Academic Publishers, 2004
Krupp, A.; Müller, W.; Oliver, I.: Refinement of Finite
State Machines with Complementary Model Checking. In Mermet, J. (Ed.): UML-B System Specification
for Proven Electronic Design, Kluwer Academic Publishers, 2004
Oesterdiekhoff, B.: Transcoding von Webinhalten. In
Informatik Spektrum 27, Nr. 5, p. 448–452, 2004
Petry Ligocki, N.; Rettberg, A.; Hennig, A.; Freitas F.,
Andre L. de: Towards a Modular Communication
System for FPGAs. In Second IEEE International
Workshop on Electronic Desing, Test and Applications
(DELTA 2004). Perth, Western Australia,
28–30 Jan 2004
Pham Van, T.: Intelligent CAC and Routing for MultiPoint Connections. In Proceedings of the 5th International Conference on Communications in Computing.
Las Vegas, NV, USA, p. 194-200, 21–24 Jun 2004
Rammig, F.J.: Autonomic Distributed Real-Time Systems: Challenges and Solutions. In 7th International
Symposium on Object-oriented Real-time Distributed
Computing, ISORC 2004 IEEE Computer Society, IEEE
Computer Society Press, 12–14 May 2004
Rammig, F.J.: Perspektiven der Mechatronik Entwicklungspotenziale für die Informatik. In Gausemeier, Jürgen; Wallaschek, Jörg (Eds.): Intelligente
mechatronische Systeme Bd. 145 (HNI-Verlagsschriftenreihe), p. 3–14, 2004
Krupp, A.; Müller, W.; Oliver, I.: The Echo Cancellation
Unit Case Study. In Mermet, J. (Ed.): UML-B System
Specification for Proven Electronic Design, Kluwer
Academic Publishers, 2004
Rettberg, A.; Dittmann, F.; Lehmann, T.; Zanella, M.C.:
A New High-Level Synthesis Approach of a Synchronous Bit-Serial Architecture. In Stoffel, D.; Kunz, W.
(Eds.): Methoden und Beschreibungssprachen zur
Modellierung und Verifikation von Schaltungen und
Systemen. Aachen: Shaker Verlag, p. 34–43, 2004
Löser, Ch.; Ditze, M.; Rammig, F.J.; Altenbernd, P.:
GRUSEL – A Self-optimizing Bandwidth-aware Video
on Demand Application. In: Proceedings of the 1st
IEEE International Conference on Autonomic Computing (ICAC-2004). New York, 2004
Rettberg, A.; Dittmann, F.; Zanella, M.C.; Lehmann, T.:
MACT - A Reconfigurable Pipeline Architecture. In
Siemens ICM MP CTO TI, Technology and Innovation:
Technologies-to-Watch. Munich, Germany, No. 21,
p. 15–17, Aug 2004
Meisel, A.; Visarius, M.; Hardt, W.; Ihmor, S.: SelfReconfiguration of Communication Interfaces. In RSP,
15th International Workshop on Rapid System Prototyping, IEEE Computer Society Press, 2004
Rust, C.; Grünewald, M.: Petri Net Based Design of a
Multi-Robot Scenario - A Case Study. In IEEE International Conference on Systems, Man and
Cybernetics(SMC). The Hague, The Netherlands,
10–13 Oct 2004
Müller, W.; Paelke, V.: A Formal Model of a Framework
for Simulation-Based Animation. In Proceedings of
the Simulation and Visualisation 2004, Magdeburg.
Erlangen: SCS European Publishing House, 2004
Müller, W.; Schäfer, R.; Bleul, S.: Interactive Multimodal User Interfaces for Mobile Devices. In Tagungsband der HICCS-37, Waikoloa, HI, USA. 2004
Müller, W.; Zambaldi, M.; Ecker, W.; Kruse, T..: The
Formal Simulation Semantics of SystemVerilog. In
Proceedings of the FDL. Lille, France, 15–17 Sep 2004
Rust, C.; Rammig, F.J.: A Petri Net Based Approach for
the Design of Dynamically Modifiable Embedded Systems. In Kleinjohann, Bernd (Ed.): Design Methods
and Applications for Distributed Embedded Systems
IFIP WG 10.5, Kluwer Academic Publishers, Proc. IFIP
TC 10 Conference DIPES 2004, 23–26 Aug 2004
Rust, C.; Rettberg, A.: Automatic Synthesis of SystemC-Code from Formal Specifications. In Kleinjohann, B.; Gao, G.R.; Kopetz, H.; Kleinjohann, L.; Rettberg, A. (Eds.): Proceedings of IFIP Working Conference on Distributed and Parallel Embedded Systems
(DIPES'04). Toulouse: Kluwer Academic Publishers,
23–26 Aug 2004
Schattkowsky, T.; Loeser, Ch.; Müller, Wo.: Peer-ToPeer Technology for Interconnecting Web Services in
Heterogeneous Networks. In Proceedings of the
AINA'04, Yokohama, Japan, IEEE CS Press, 2004
Schattkowsky, T.; Loeser, Ch.; Müller, Wo.: Peer-toPeer-based Web Services for Collaborative Engineering Environments. In Proceedings of the ICN'04,
Guadeloupe, France. 2004
Schattkowsky, T.; Müller, W.: Model-Based Specification and Execution of Embedded Real-Time Systems.
(Interactive Presentation). In Proceedings of the
DATE04, Paris. 2004
Schattkowsky, T.; Müller, W.: Model-Based Design of
Embedded Systems. In Proceedings of the ISORC04,
Vienna. 2004
Schattkowsky, T.; Müller, W.: Model-Based Design of
Embedded Systems. In Proceedings of the ISORC'04,
Vienna. 2004
Schattkowsky, T.; Müller, W.g; Pawlak, A.: Workflow
Management Middleware for Secure Distance-Spanning Collaborative Engineering. In Fischer, L. (Ed.):
Workflow Handbook 2004. Lighthouse Point, FL,
USA: WfMC, 2004
Schattkowsky, T.; Rettberg, A.: UML for FPGA Synthesis. In Proceedings of the UML for SoC Design Workshop. San Diego, CA, 6 Jun 2004
Stappert, F.: From Low-Level to Model-Based and
Constructive Worst-Case Execution Time Analysis.
University Paderborn, Heinz Nixdorf Institute, C-LAB
Publication Bd. 17, 2004
Stappert, F.: Petri Net Level WCET Analysis. In 4th Intl
Workshop on Worst-Case Execution Time (WCET)
Analysis; in conjunction with the 16th Euromicro
Conference on Real-Time Systems. Catania, Sicily,
Jun–Jul 2004
Voros, N.; Müller, W.; Snook, C.: Introduction to
Formal Methods: How They Apply to Embedded
Systems. In Mermet, J. (Ed.): UML-B System Specification for Proven Electronic Design, Kluwer
Academic Publishers, 2004
Zambaldi, M.; Ecker, W.; Henftling, R.: A Tester-Related Simulation Environment. In GI/ITG/GMM. Dresden,
29 Feb–2 Mar 2004
Zambaldi, M.; Ecker, W.: Ein orthogonales Schema
für die Klassifikation der Modellierungsabstraktion
von digitalen Systemen. In GI/ITG/GMM.
Kaiserslautern, 24–25 Feb 2004
Zambaldi, M.; Ecker, W.: Extending the RASSP model
for Verification. In Proceedings of the FDL. Lille,
France, 15 Aug–17 Sep 2004
Zambaldi, M.; Ecker, W.: How to bridge the gap
between simulation and test. In Proceedings of the
ITC. Charlotte, NC, 26–29 Oct 2004
Zambaldi, M.; Ecker, W.; Henftling, R.; Bauer, M.: A
Layered Adaptive Verification Platform for Simulation,
Test, and Emulation. In: IEEE Design & Test of Computers, 2004
Zhao, Y.: LTL's Intuitive Representations and Its
Automaton Translation. In Proc. of IFIP Working Conference on Distributed and Parallel Embedded Systems (DIPES 2004), 2004
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Colloquium of DFG Priority Program Reconfigurable
Computing, Gräfliches Parkhotel Bad Driburg,
1/2 July 2004.
International UML Workshop for SoC Design at
Design Automation Conference in San Diego,
USA, 7–11 June 2004
IFIP Working Conference on Distributed and Parallel
Embedded Systems (DIPES), Toulouse, France, 23–26
August 2004
Patents
Selbststeuernde rekonfigurierbare bit-serielle
Pipelinearchitektur (self-controlled reconfigurable
bit-serial pipeline architecture) 10308510; A. Rettberg,
T. Lehmann, M. C. Zanella and Ch. Bobda
Prizes/Awards
"Xilinx Best Paper Award" at ReConFig04, Culima,
Mexico (K. Danne)
"Best Reconfigurable Computing Paper” at
ReConFig04, Culima, Mexico (M. Götz)
Workgroups
· Member of Nordrhein-Westfälische Akademie der
Wissenschaften (F.J. Rammig)
· Member of acatec (F. J. Rammig)
· University-sided Chair of the C-LAB (F.J. Rammig)
· Member of the Paderborn International Graduate
School on Dynamic Intelligent Systems Committee
(F.J. Rammig)
· Member of Advisory Council of the Paderborn
Center for Parallel Computing (F.J. Rammig)
· Chair IFIP TC 10 (F.J. Rammig)
· Member of IFIP Working Group 10.5 (F.J. Rammig)
· Member of GI FB 3 (F.J. Rammig)
· Member of GI/RSS/ITG Steering Committee
(F.J. Rammig)
· Chair of IFIP WG 10.5 SIG ES (B. Kleinjohann)
· Program Chair IEEE & SBC SBCCI 2004 (F.J. Rammig)
· SFB 376 Tp. B1
Design Methods for Massively Parallel Real-Time
Systems
· SFB 614 Tp. B1
Design Techniques
· SFB 614 Tp. C2
RTOS for Self-Optimizing Systems
· TP2R2
Temporal Placement and Temporal Partitioning
rekonfigurierbarer Rechensysteme
· TEReCS
Design of Customizable Real-Time Communication
Systems
· ISILEIT
Integrated Specification of Distributed Control
Systems in Flexible Automated Manufacturing
· EVENTS
New Computer Vision Techniques and Real-Time
Approaches for Innovative Image Inter-polation for
Multi-View Presentations of TV Transmissions in
Wide Scenarios
Supporting institution: EU
· Vernetzte Mobile Systeme
Förderinstitution: Stiftung Westfalen
Architectural Investigations (dSPACE)
Visit by Researchers
· Prof. Dr. PCP Bhatt, Indian Institute of Information
Technology, Bangalore, India (May – June 2004)
· Dr. Jean-Claude Laprie, LAAS Toulouse (May 2004)
· Prof. Dr. Udo Kebschull, University Leipzig (July 2004)
Workgroup System and Circuit Technology
Publications
Grünewald, M.; Niemann, C.-H.; Porrmann, M.; Rückert, U.: A framework for design space exploration of
resource efficient network processing on multiprocessor SoCs. In: Network Processor Design: Issues and
Practices, Vol. 3, chapter 12, Morgan Kaufmann Publisher, 2004.
Iske, B.; Jäger, B.; Rückert, U.: A Ray-Tracing Approach
for Simulating Recognition Abilities of Active Infrared
Sensor Arrays. In: IEEE Sensors Journal 4 (2004), April,
Nr. 2, pp. 237–247.
Kalte, H.; Kettelhoit, B.; Köster, M.; Porrmann, M.;
Rückert, U.: A System Approach for Partially Reconfigurable Architectures. In: International Journal of
Embedded Systems (IJES), Inderscience Publisher,
2004.
Loeser, C; Brinkmann, A; Rückert, U.: Distributed Path
Selection (DPS) - A Traffic Engineering Protocol for
IP-Networks. In Proceedings of the 37th Hawaii International Conference on System Sciences (HICSS), Big
Island, Hawaii, USA, January 2004, pp. 205–212.
Grünewald, M.; Niemann, J.-C.; Porrmann, M.; Rückert, U.: A framework for design space exploration of
resource efficient network processing on multiprocessor SoCs. In Proceedings of the 3rd Workshop on
Network Processors & Applications, Madrid, Spain,
February 14–15, 2004, pp. 87–101.
Grünewald, M.; Niemann, J.-C.; Porrmann, M.; Rückert, U.: A mapping strategy for resource-efficient network processing on multiprocessor SoCs. In Proceedings of DATE: Design, Automation and Test in Europe,
CNIT La Défense, Paris, France, 16–20 February 2004,
pp. 758–763.
Kalte, H.; Porrmann, M.; Rückert, U.: Leistungsbewertung unterschiedlicher Einbettungsvarianten
dynamisch rekonfigurierbarer Hardware. In Workshop
Proceedings: ARCS 2004 – Organic and Pervasive
Computing, GI-Edition Lecture Notes in Informatics
(LNI), Augsburg, March 26, 2004, pp. 235–244.
Brinkmann, A.; Heidebuer, M.; Meyer auf der Heide, F.;
Rückert, U.; Salzwedel, K.; Vodisek, M.: V:Drive – Costs
and Benefits of an Out-of-Band Storage Virtualization System. In Proceedings of the 12th NASA Goddard, 21st IEEE Conference on Mass Storage Systems
and Technologies (MSST), College Park, Maryland,
USA, 13–16 April 2004, pp. 153–157.
Kalte, H.; Porrmann, M.; Rückert, U.: System-onProgrammable-Chip Approach Enabling Online FineGrained 1D-Placement. In: 11th Reconfigurable
Architectures Workshop (RAW 2004), Santa Fé,
New Mexico, USA, April 26 and 27, 2004, pp. 141.
Kalte, H.; Köster, M; Kettelhoit, B; Porrmann, M; Rückert, U: A Comparative Study on System Approaches
for Partially Reconfigurable Architectures. Proceedings of the International Conference on Engineering
of Reconfigurable Systems and Algorithms (ERSA ’04),
Las Vegas, Nevada, USA, June 21–24, 2004, pp. 70–76.
Witkowski, U.; Rückert, U.: Pattern Synchronization
for Associative Memory in pulse coded Neural Networks. In: IEEE 47th Midwest Symposium on Circuits
and Systems, Bd. 2, Hiroshima, Japan, 25–28 July
2004, pp. 381–384.
Beiu, V.; Rückert, U.; Roy, S.; Nyathi, J.: On Nanoelectronic Architectural Challenges and Solutions.
Accepted In: Proceedings of IEEE Conference on
Nanotechnology IEEE NANO 2004, München,
August 17–19, 2004.
Griese, B.; Vonnahme, E.; Porrmann, M.; Rückert, U.:
Hardware Support for Dynamic Reconfiguration in
Reconfigurable SoC Architectures. In Proceedings of
the 14th International Conference on Field Programmable Logic and its Applications (FPL2004), Antwerp,
Belgium, 30 August–1 September, 2004, pp. 842–846.
Franzmeier, M.; Pohl, C.; Porrmann, M.; Rückert, U.:
Hardware Accelerated Data Analysis. In Proceedings
of the 4th International Conference on Parallel Computing in Electrical Engineering (PARALEC 2004),
Dresden, Germany, September 7–10, 2004,
pp. 309–314.
Grünewald, M.; Kastens, U.; Le, D. K.; Niemann, J.-C.;
Porrmann, M.; Rückert, U.; Thies, Michael; Slowik,
Adrian: Network Application Driven Instruction Set
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Extensions for Embedded Processing Clusters. In Proceedings of the 4th International Conference on Parallel Computing in Electrical Engineering (PARELEC
2004), Dresden, Germany, September 7–10, 2004,
pp. 209–214.
Brinkmann, A.; Salzwedel, K.; Vodisek, M.: A Case for
Virtualized Arrays of RAID. In: Proceedings of the
International Workshop on Storage Network Architecture and Parallel I/Os SNAPI 2004. Antibes Juanles-pins, France, 30 September 2004, pp. 9–16.
Vonnahme, E.; Griese, B.; Porrmann, M.; Rückert, U.:
Dynamic reconfiguration of real-time network interfaces. In Proceedings of the 4th International Conference on Parallel Computing in Electrical Engineering
(PARELEC 2004), Dresden, Germany, September 8–10,
2004, pp. 376–379.
Hagen, G.; Niemann, J.-C.; Porrmann, M.; Sauer, C.;
Slowik, A.; Thies, M.: Developing an IP-DSLAM Benchmark for Network Processor Units. In: ANCHOR 2004,
Advanced Networking and Communications Hardware Workshop, held in conjunction with the 31st
Annual International Symposium on Computer Architecture (ISCA 2004), Munich, Germany, 2004.
Witkowski, U.; Chinapirom, T.; Du, J.; Rückert, U.;
Manolov, O.: Cooperating autonomous and mobile
minirobots in dynamic environments. In Proceedings
International Federation of Automatic Control – IFAC
– DECOM-TT 2004. Bansko, Bulgaria, 3–5 October,
2004, pp. 277–282.
Vonnahme, E.; Griese, B.; Porrmann, M.; Rückert, U.:
Dynamische Rekonfiguration echtzeitfähiger Netzwerkschnittstellen. In Proceedings VDE Kongress 2004
– ITG Fachtagung Ambient Intelligence, VDE Verlag,
Berlin, Germany, October 18–20, 2004, Vol. 1,
pp. 99–104.
Meyer auf der Heide, F.; Schindelhauer, C.; Volbert, K.;
Grünewald, M.: Congestion, Dilation, and Energy in
Radio Networks. In: Theory of Computing Systems 37
(2004), May, Nr. 3, S. 343–370.
Holdgrewe, K.: Bedieneradaptive Systeme – Lernen
vom Fahrer. Dissertation. Universität Paderborn, 2004.
Iske, B.: Modellierung und effiziente Nutzung aktiver
Infrarotsensorik in autonomen Systemen. Universität
Paderborn, Heinz Nixdorf Institut, Schaltungstechnik,
2004, HNI-Verlagsschriftenreihe Bd. 140.
Grünewald, M.; Xu, F.; Rückert, U.: Power Control in
Directional Mobile Ad Hoc Networks. In Proceedings
VDE Kongress 2004 – ITG Fachtagung Ambient Intelligence, VDE Verlag, Berlin, Germany, October 18–20,
2004, Vol. 1, pp. 169–174.
Kalte, H.: Einbettung dynamisch rekonfigurierbarer
Hardwarearchitekturen in eine Universalprozessorumgebung. Universität Paderborn, Heinz Nixdorf
Institut, Schaltungstechnik, 2004, HNI-Verlagsschriftenreihe Bd. 139.
Niemann, J.-C.; Porrmann, M.; Rückert, U.: Parallele
Architekturen für Netzwerkprozessoren. In Proceedings VDE Kongress 2004 – ITG Fachtagung Ambient
Intelligence, VDE Verlag, Berlin, October 18-20, 2004,
Vol. 1, pp. 105–110.
Brinkmann, A.: Verteilte Algorithmen zur Datenplazierung und zum Routing in gegnerischen Netzwerken. Universität Paderborn, Heinz Nixdorf Institut,
Schaltungstechnik, 2004, HNI-Verlagsschriftenreihe
Bd. 135.
Witkowski, U.; Rückert, U.: Aktives Nachtsichtsystem
für autonome mobile Roboter. In Proceedings VDE
Kongress 2004 - ITG Fachtagung Ambient Intelligence, VDE Verlag, Berlin, Germany, October 18–20,
2004, Vol. 1, pp. 75–80.
CeBIT 2004 in Hannover
Presentation of the V:DRIVE project at the booth
“Forschungsland NRW”
Chinapirom, T.; Kaulmann, T.; Witkowski, U.; Rückert,
U.: Visual Object Recognition by 2D-Color Camera
and On-Board Information Processing for Minirobots.
In: Proceedings of the FIRA Robot World Congress.
Busan, South Korea, 26–29 October 2004.
Pohl, C.; Franzmeier, M.; Porrmann, M.; Rückert, U.:
gNBX – Reconfigurable Hardware Acceleration of
Self-Organizing Maps. In Proceedings of the IEEE
International Conference on Field Programmable
Technology (FPT'04). Brisbane, Australia, 6–8 December 2004, pp. 97–104
Kalte, H.; Porrmann, M.; Rückert, U.: Study on Column
Wise Design Compaction for Reconfigurable Systems.
In Proceedings of the IEEE International Conference
on Field Programmable Technology (FPT'04). Brisbane,
Australia, 6–8 December 2004, pp. 413–416
Minchev, Z.; Manolov, O.; Noykov, S.; Witkowski, U,;
Rückert, U.: Fuzzy Logic Based Intelligent Motion
Control of Robots Swarm Simulated by Khepera
Robots. In IEEE International Conference on Intelligent Systems, 2004, Vol. 1, pp. 305–310
Rust, C.; Grünewald, M.: Petri Net Based Design of a
Multi-Robot Scenario - A Case Study. In: IEEE International Conference on Systems, Man and Cybernetics (SMC). The Hague, The Netherlands, 10–13 October 2004.
· Director of the DFG Graduate College “Automatic
Configuration in Open Systems”
· Associate Dean of the Faculty for Computer Science,
Electrical Engineering and Mathematics
· Member of the “International Graduate School of
Dynamic Intelligent Systems” Committee
· Member of the Advisory Council of the C-LAB
· Member of the Advisory Council of the L-LAB
· Member of the Advisory Council of the PC2 (Paderborn Center for Parallel Computing)
· Member of the Advisory Council of the PaSCo
(Paderborn Institute for Scientific Computation)
· Chairman of the Special Interest Group “Mikroelektronik neuronaler Netze” of the ITG (Information
Technology Society)
· Adjunct Professor, Faculty of Information Technology, QUT, Brisbane, Australia
Linux Day in Karlsruhe
of the CONET AG
LinuxWorld in Frankfurt
of Novell/Suse
Patents
Scheideler, C., Brinkmann, A., Salzwedel, K., Meyer auf
der Heide, F., Rückert, U.: Verfahren und Anordnung
zur randomisierten Datenspeicherung in Speichernetzwerken und/oder einem Intranet und/oder dem
Intranet sowie ein entsprechendes Computerprogramm-Erzeugnis und ein entsprechendes computerlesbares Speichermedium, AZ: DE 102 36 796
Brinkmann, A., Scheideler, C., Meyer auf der Heide, F.,
Rückert, U.: Verfahren und Anordnung zur Verteilung
von Datenblockmengen in Speichernetzwerken
und/oder einem Datennetz sowie Computerprogramm-Erzeugnis und computerlesbares Speichermedium. AZ: DE 10 2004 018 808
Schomaker, G., Brinkmann, A., Meyer auf der Heide, F.,
Rückert, U.: Verfahren zur Verwaltung von Metainformationen zur Verteilung von Datenblöcken oder
Objekten über computerlesbare Speichermedien sowie
Computerprogrammprodukt und computerlesbares
Speichermedium, AZ: DE 10 2004 046 243
Spin-Offs
Oak Technology GmbH, eine Zoran Inc. Company
The company offers modern and highly specialized
services in the field of development, test, verification,
and programming of application specific integrated
circuits. Oak Technology GmbH is a subsidiary of
Zoran Corporation, Sunnyvale, CA.
Resource-Efficient Function Approximator for
Autonomous Systems
Based on analog circuit technology, a microelectronic
module is being developed for the resource-efficient
implementation of a function approximator for
autonomous systems. This is done in cooperation
with Professor Sitte, Queensland University of Technology, Australia.
Routing Nodes for Mobile Ad-hoc Networks (Manets)
It is the aim of this project to design a resource-efficient one-chip system, which facilitates the operation
of Manets on the basis of an adaptive communication process that has been worked out in cooperation
with Professor Meyer auf der Heide’s research group.
This project is part of the Collaborative Research Centre 376 of the DFG.
Hardware Reconfiguration
In this project we analyse and implement principles
of hardware reconfiguration of microelectronic components in self-optimising mechatronic systems. The
project is part of the Collaborative Research Centre
614 of the DFG.
RTOS for Self-Optimising Systems
In cooperation with the working group “Design of
Parallel Systems” of Prof. Rammig, we develop a realtime communication and operating system for distributed self-optimizing systems. This project is part
of the Collaborative Research Centre 614 of the DFG.
Active Night Vision System for More Safety in Road
Traffic
In the context of the support program “Neue Ingenieurteams” of the “Alfried Krupp von Bohlen und
Halbach-Stiftung” we initiated the project “Active
Night Vision System for More Safety in Road Traffic”.
This project is carried out in cooperation with the
“Aldegrevergymnasium Soest” and “Hella KG Hueck &
Co”.
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Paderborn Realtime Storage Network PReSto
In cooperation with the working group of Professor
Meyer auf der Heide, Infineon Technologies, and the
Conet AG, the efficient use of highly scalable storage
systems is analyzed.
synQPSK
In cooperation with the working group “Optical
Communication and High-Frequency Engineering”
of Professor Noé, University of Paderborn, this project
targets the development of key components for
“Synchronous Optical Quadrature Phase Shift Keying
Transmission”.
PlaNetS
In the context of the BMBF project “PlaNets – Platforms for Networked Services”, new concepts for parallel packet processors are developed and analyzed in
cooperation with Infineon Technologies and additional industrial partners.
Workgroups
GigaNetIC
In cooperation with the Infineon Technologies AG
(Munich), the BMBF project GigaNetIC aims at developing superfast low-loss digital MOS circuit technologies and systems for communication and network applications. The main focus of our activities is
on basic techniques for system-on-a-chip architectures. Other participants in Paderborn are the working groups of Prof. Meyer auf der Heide and Prof.
Kastens.
VisionIC
In the context of the VisionIC-project, we analyse
neural pulse coded associative memories in cooperation with Infineon Technologies. The main focus of
the project is the analysis and development of an
intelligent vision platform for the mass market.
Look ahead sensors for active headlights
In this project we analyse and evaluate new sensor
concepts for active headlights in cooperation with
“Hella KG Hueck & Co”. With these sensor concepts,
headlights with new functionality will be realized.
V:DRIVE
In cooperation with the Conet AG we analyze the
integration of meta information for storing replicated
data in a storage-management framework.
EMBond
In cooperation with the Hesse & Knipps GmbH, the
project EMBond – embedded microelectronics for
wire bonders – targets the development of new concepts to enhance wire bonders by means of efficient
microelectronic solutions.
Workgroup Mechatronics and Dynamics
Publications
Brandt, T.; Sattel, T.; Wallaschek, J.: Ein Ansatz zur
automatischen Kollisionsvermeidung. In: VDIBerichte: Integrierte Sicherheit und Fahrerassistenzsysteme – 21. Internationale VDI/VW Gemeinschaftstagung, Wolfsburg, 27.-28. Oktober 2004. Düsseldorf: VDI-Verlag, 2004, Bd. 1864, pp.125–144.
Brökelmann, M.; Hesse, H.; Wallaschek, J.: Neue Verfahren zur Qualitätsüberwachung gebondeter
Verbindungen. In: VDI-Berichte: Fahrzeugelektronik
im Fokus, Tagung Baden-Baden, 8. Oktober 2004.
Düsseldorf, VDI-Verlag, 2004, Bd. 1866, pp. 103–121.
Brökelmann, M.; Wallaschek, J.; Hesse, H.: Bond
process monitoring via self-sensing transducers. In:
Proceedings of the IEEE International Ultrasonics,
Ferroelectrics, and Frequency Control 50th Anniversary
Joint Conference, Montreal, Canada, 2004.
Brökelmann, M.; Król, R.; Wallaschek, J.; Hesse, H.: A
Self-Sensing Transducer for Ultrasonic Wire Bonding.
In: Proceedings of the 18th International Congress on
Acoustics (ICA 2004), Kyoto, Japan, 4.–9. April 2004,
Bd. 4, pp. 2901–2904.
Fu, B.; Hemsel, T.; Wallaschek, J.: Model-based Diagnosis for Sandwiched Ultrasonic Transducers. In: Proceedings of the 18th International Congress on
Bd. 3, pp. 2243–2246.
Gausemeier, J.; Wallaschek, J. (Hrsg.): 2. Paderborner
Workshop Intelligente mechatronische Systeme.
HNI-Verlagsschriftenreihe, Bd. 145. Paderborn, Heinz
Nixdorf Institut, Universität Paderborn, 2004.
Hemsel, T.; Mracek, M.; Vasiljev, P.; Wallaschek, J.: A
Novel Approach for High Power Ultrasonics Motors.
In: Proceedings of the IEEE International Ultrasonics,
Ferroelectrics, and Frequency Control 50th Anniversary
Joint Conference, Montreal, Canada, 2004.
Henzler, S.: Methodik zur Konzeption der Struktur
und der Regelung leistungsverzweigter Getriebe mit
Toroidvariator. HNI-Verlagsschriftenreihe, Bd. 144.
Paderborn, Heinz Nixdorf Institut, Universität Paderborn, 2004.
Kauczor, C.; Schulte, T.; Grotstollen, H.: Piezoelectric
Transformer of Travelling Wave Type. In: ACTUATOR,
Bremen, 2004.
Brökelmann, M.; Król, R.; Wallaschek, J.; Hesse, H.:
Neue Mikrosensoren für die Bondtechnik. In: 15.
Workshop Mikrotechnische Produktion, Heinz Nixdorf
Institut, Paderborn, 19. November 2004.
Kauczor, C.; Fröhleke, N.: Inverter Topologies for
Ultrasonic Piezoelectric Transducers with High
Mechanical Q-Factor. In: Power Electronics Specialists
Conference (PESC), Aachen, 2004.
Fründ, E.: Aktive Kompensation von periodischen
Schwingungen an rotierenden Walzen. HNI-Verlagsschriftenreihe, Bd. 136. Paderborn, Heinz Nixdorf Institut, Universität Paderborn, 2004
Kauschke, R.; Eichhorn, K.; Wallaschek, J.: Aktive
Scheinwerfer zur subtraktiven Lichtverteilungserzeugung. In:105. DGaO-Tagung, Bad-Kreuznach, 1.–5.
Juni 2004, www.dgao.de, Online-Proceeding.
Kauschke, R.; Eichhorn, K.; Wallaschek, J.: Adaptive
Scheinwerfer – ein Technologieüberblick. In: Licht
2004-Tagung, Dortmund, 19.-22. September 2004,
CD-ROM.
Kleinkes, M; Völker, S.: Homogenitätsbewertung für
Scheinwerfer-Lichtverteilungen. In: Lighting Research
and Technology, 2004.
Kliebisch, D.; Völker, S.: Entwicklung eines Modells zur
Berechnung der Erkennbarkeitsentfernung aus
Leuchtdichtebildern. In: Licht 2004-Tagung, Dortmund, 19.–22. September 2004, CD-ROM.
Littmann, W.; Hemsel, T.; Wallaschek, J.: Design
Criteria for Piezoelectric Transformers. In: Proceedings
of the 18th International Congress on Acoustics
(ICA 2004), Kyoto, Japan, 4.–9. April 2004, Bd. 4,
pp. 2889–2892.
Littmann, W.; Wallaschek, J.: Reibung bei Ultraschallschwingungen. In: Konstruktion. Düsseldorf,
VDI-Verlag, 2004, Nr. 3, pp. 63–64.
Locher, J.; Völker, S.: The Influence of Vehicle Beam
Patterns on Safety and Acceptance. In: SAE World
Congress, Detroit, USA, 2004.
Mracek, M.; Wallaschek, J.; Hemsel, T.: Self Configuration of Miniature Ultrasonic Linear Motors. In: Proceedings of the 18th International Congress on
Bd. 1, pp. 417–420.
Mracek, M.; Wallaschek, J.: Powder Transport Based
on Piezoelectrically Excited Ultrasonic Progressive
Waves. In: Proceedings of the International Conference Piezoelectric Materials and Applications in Actuators, Korea Institute of Technology, Seoul, Korea,
2004.
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Mracek, M.; Wallaschek, J.: A System for Powder
Transport Based on Piezoelectrically Excited Ultrasonic Waves. In: Proceedings of the International Conference Microtechnology, Mechatronics and Materials
IVAM NRW, 2004, pp. 100–102.
Neumann, N.; Goldschmidt, S.; Wallaschek, J.: On the
Application of Set-Oriented Numerical Methods in
the Analysis of Railway Vehicle Dynamics. In: PAMM,
Sektion Mathematische Methoden in den Natur- und
Ingenieurwissenschaften, 2004.
Neumann, N.; Goldschmidt, S.; Wallaschek, J.: On the
Application of Set-Oriented Numerical Methods in
the Analysis of Railway Vehicle Dynamics. In: 4th
European Congress on Computational Methods in
Applied Sciences and Engineering (ECCOMAS), 2004.
Sattel, T.: Dynamic Phenomena in Traveling Wave
Type Ultrasonic-Motors. In: Proceedings of the 18th
International Congress on Acoustics (ICA 2004),
Kyoto, Japan, 4.–9. April 2004, Bd. 1, pp. 413–417.
Schlicht, A.: Kongruenz des Blickverlaufs bei virtuellen
und realen Autofahrten – Kraftfahrzeugsimulatoren
als virtuelles Entwicklungswerkzeug zur Evaluation
neuer Scheinwerfersysteme. In: Licht 2004-Tagung,
Dortmund, 19.–22. September 2004, CD-ROM.
Sprenger, R.; Kleinkes, M.; Locher, J.: Ausbildung von
Nutzungsstrategien bei Fahrerassistenzsystemen am
Beispiel eines Infrarot-Nachtsichtsystems. In: VDIBerichte: Integrierte Sicherheit und Fahrerassistenzsysteme – 21. Internationale VDI/VW Gemeinschaftstagung, Wolfsburg, 27.–28. Oktober 2004. Düsseldorf, VDI-Verlag, 2004, Bd. 1864, pp. 531–541.
Storck, H.: Optimierung der Kontaktvorgänge bei
Wanderwellenmotoren. HNI-Verlagsschriftenreihe,
Bd. 138. Paderborn, Heinz Nixdorf Institut, Universität
Paderborn, 2004.
Völker, S; Kleinkes, M.: Quality of Automotive Headlamp Light Distribution. In: Lighting Research and
Technology, 2004.
Völker, S.: Bewertungssysteme für Scheinwerfer. In:
CTI Tagung, Sindelfingen, 2004.
Völker, S.: How Save Are our Headlamps? In: 2. L-LAB
Summerschool, Blomberg, 30. August–3. September
2004, CD-ROM.
Völker, S.; Schmidt, F.: Bildaufgelöste Leuchtdichtemessung zur Bewertung von Scheinwerfern. In:
Licht 2004-Tagung, Dortmund, 19.–22. September
2004, CD-ROM.
Völker, S.; Raphael, S.; u. a.: Beleuchtungsstärke oder
Leuchtdichte – eine kritische Diskussion des
Blendungsmaßes für Kfz – Scheinwerfer. In: Licht
2004-Tagung, Dortmund, 19.–22. September 2004,
CD-ROM.
Wallaschek, J.; Wickord, W.; Ostermann, T.: Patentanalyse und Patent-Portfolio - Werkzeuge des strategischen Patentmanagements. In: Modernes Patentbewusstsein in Hochschulen. Münster, Waxmann Verlag,
2004, pp. 47–78.
Wördenweber, B.; Wickord, W.: Technologieund Innovationsmanagement im Unternehmen –
Methoden, Praxistipps und Softwaretools. Berlin
u. a., Springer Verlag, 2004.
105
1st International Workshop on Piezoelectric Materials
and Applications in Actuators, Seoul, March 28th–30th
2004 (Organizers S. Y. Yoon, KIST, J. Wallaschek)
2nd L-LAB Summerschool ”Expanding Horizons
for Automotive Lighting”, Blomberg, August 29th–
September 3rd 2004 (Organizer J. Wallaschek)
IIR-Fachkonferenz Lichttechnik (lighting technology
symposium), Stuttgart, Jun 21st–22nd 2004
(technical direction J. Wallaschek)
Mechatronic Workshop VDI, Stuttgart,
March 15th–16th 2004 and September
30th–October 1st 2004
Workshop “Intelligente mechatronische Systeme”
(intelligent mechatronic systems), Paderborn,
March 25th–26th 2004
LED in NRW, Gelsenkirchen, February 3rd 2004
and Krefeld, May 18th 2004 and Aachen,
September 14th 2004
Blendungsworkshop (anti-glare workshop), L-LAB,
Paderborn, April 21th 2004
Patents
· Modellbasierter Lebensdauerbeobachter,
DE 102 57 793 A1
· Verfahren zur Ansteuerung einer Lichterzeugungseinrichtung für Kraftfahrzeuge sowie Vorrichtung,
AZ: 102 004 042 092.0
· Scannender Scheinwerfer für Fahrzeuge,
AZ: 102 004 032 095.0
Prizes/Awards
Thorsten Brandt: Award for the "Best Paper by a
Young Scientist" presented at the 21st International
VDI/VW Joint Conference on "Integrated Safety and
Driver Assistance Systems". Title: "Ein Ansatz zur
automatischen Kollisionsvermeidung/On Automatic
Collision Avoidance".
Stefan Wilmanns: Weidmüller Prize for Outstanding
Achievements in the Basic Study Stage.
Jörg Wallaschek:
· Chairman of L-LAB, Research Centre for Lighting
Technology and Mechatronics, PublicPrivatePartnership of Hella KG Hueck & Co. KG and the University
of Paderborn
· Member of the national advisory council on
Mechanical Vibration of the VDI / DIN
· Spokesman of the Competence Network “LED in
NRW“
· Board member of the OpTechNet e.V.
· Board member of the Graduate School on Dynamic
Intelligent Systems
· Board member of the PaSCo (Paderborn Institute for
Scientific Computation)
· Member of the Senate of the University of Paderborn
· Board member of the Heinz Nixdorf Institute
· Member of the Editorial Advisory Board of the International Journal of Vehicle Autonomous Systems
Stepan Völker:
· Board member of the “Lichttechnische Gesellschaft
des Ruhrgebietes“
· Reporter of the Division for mesopic vision at the
International Lighting Commission (CIE)
· Member of the technical committee for interior
lighting of the LiTG
· Member of the DIN technical norm committee
“color” (FNF)
Spin-Offs
ATHENA Technologie Beratung GmbH
The ATHENA Technologie Beratung GmbH offers scientific and business consultancy as well as engineering services in the fields of mechatronics and new
technologies. ATHENA provides feasibility studies and
technical expertise, monitors the progress of new
technologies, supports the technology and innovation
management and develops strategies for patent
management. For further information see
http://www.myATHENA.de
PADERSONIC GmbH
The Padersonic GmbH develops, builds and markets
mechatronic systems, in particular in the areas of
piezo actuators, sensors, optical systems and image
processing. It also develops customer-specific software and hardware solutions for control engineering.
INERELA – Integrative Development of Spatial
Electronic Devices
The aim is to provide a development platform for
spatial electronic devices in selected product classes
(Chip-on-board Technology, Ultrasonic Bonding Technique, Micro-Sensors, Micro-Electro-Optical Systems).
Supporting Institution: BMBF
NBP – Neue Bahntechnik Paderborn (railcab)
In this project the main focus of our activities is:
Chassis und Switch Technology; Condition Monitoring; Overall-System-Optimisation. Supporting Institution: Land NRW/University of Paderborn/City of
Paderborn
Optical Concepts for Active Lighting Technology
Systems
Our goal is the evaluation and development of new
optical concepts for active headlights. Active headlights are considered as a further development of
today’s Adaptive-Frontlighting-Systems. They allow
a free choice of light distribution in front of the
vehicle. Supporting Institution: L-LAB
Development of Coordinated Vibration Drives
This research project develops micromotors as innovative direct drives for generating demand-driven linear movements. The goal is for several motors to
work together as a unit to create an automatically
inter-coordinated system of individual motors which
automatically configure themselves to produce an
optimal operational state. Supporting Institution: DFG
Collective Illumination of the Traffic Space
The overall goal of this project is the development of
an active lighting system that allows the optimal illumination of the road through several vehicles. Specific targets are the evaluation of sensors and overall
vehicle communication systems. Supporting Institution: International Graduate School of Dynamic Intelligent Systems.
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106
Study of Self-Energising Mechanical Breaks
By using self-energising through friction, break-systems that require only little control forces and power
are to be designed. Supporting Institution: University
of Paderborn, Embassy of Egypt
FEM-Modelling of Piezoelectric Composite Oscillators
In this project computational methods for the analysis of piezoelectric oscillators are developed. Special
attention is paid to resonant excited systems. Supporting Institution: DFG
Technology Monitoring LED Lighting
As part of the Competence Network LED in NRW we
are monitoring the development of the technology
field of LED lighting. Within this framework we are
supporting the local lighting technology industry in
North-Rhine-Westfalia in analysing patents and
developing and designing new lighting system with
light-emitting diodes. Supporting Institution: Land
North-Rhine-Westfalia with the Ministries MSWF,
MWMEV, MASQT
Workgroups
Mechanical Vibrations in Headlight Systems
Based upon the mechanical modelling of headlight
systems, tools for the optimisation of the vibrational
behaviour are being developed. The focus of attention is on the coupling of FEM as well as MKS modelling and experimental modal analysis. Supporting
Institution: L-LAB, Industry
Application of Set-Oriented Methods for the Analysis
of Non-Linear Dynamic Systems
The aim of this project is to provide efficient and
general methods to support product development,
especially in the analysis of nonlinear dynamic systems. Set-oriented methods will allow to derive
information on the dynamics of the system, including
e.g. the form of attractors, absorption- and observation probabilities in the state space of a system. Supporting Institution: DFG (PaSCo)
Vibration-Assisted Deep Hole Drilling
The project aims is to overlay deep hole drilling
processes with ultrasonic vibrations for better results.
Working in cooperation with the Institute for
Machine Tools at the University of Stuttgart, we are
studying what other kinds of vibration are best suited
for this and which ultrasound generators are capable
of producing stable ultrasonic vibrations. Supporting
Institution: DFG
Adaptive Piezoelectric Resonance Converter with
Non-Linear Mechanical Boundary Conditions
The goal is to investigate concepts for resonant excited piezoelectric systems consisting of an electrical
control and oscillating ultrasonic tools under nonlinear mechanical loads which are caused by the interaction of the tool and its environment. Sponsor:
Industry
L-LAB – Research Centre for Lighting Technology
and Mechatronics
In the L-LAB, jointly run in PublicPrivatePartnership
by the Hella KG Hueck & Co. KG and the University
of Paderborn, we contribute to interdisciplinary
projects. These activities can be classified as basic
research and technological development. In transfer
projects technology demonstrators and lighting system prototypes with a lead time of 1 to 2 generations are developed. Supporting Institution: Land
NRW/Stifterverband/Hella/University of Paderborn
Workgroup Parallel Computing
Publications
Elsässer, R.; Monien, B.; Schamberger, S.: Load Balancing in Dynamic Networks, Proc. of the 7th International Symposium on Parallel Architectures, Algorithms,
and Networks (I-SPAN 2004), 193–200, 2004.
Elsässer, R.; Monien, B.; Schamberger, S.: Load Balancing of Indivisible Unit Size Tokens in Dynamic and
Heterogeneous Networks, Proc. of the 12th European
Symposium on Algorithms (ESA'04), LNCS 3221,
640–651, 2004.
Elsässer, R.; Frommer, A.; Monien, B. ; Preis, R.: Optimal
Diffusion Schemes and Load Balancing on Product
Graphs, Parallel Processing Letters, 14, 61–73, 2004.
Bezrukov, S.; Elsässer, R.; Monien, B.; Preis, R.; Tillich,
J.-P.: New spectral lower bounds on the bisection
width of graphs, Theoretical Computer Science, 320,
155–174, 2004.
Gairing, M.; Lücking, T.; Mavronicolas, M.; Monien, B.:
The Price of Anarchy for Polynomial Social Cost, Proc.
of the 29th International Symposium on Mathematical
Foundations of Computer Science (MFCS 2004), LNCS
3153, 574–585, 2004.
Gairing, M.; Geist, R.M.; Hedetniemi, St.; Kristiansen,
P.: A Self-Stabilizing Algorithm for maximal 2-packing, Nordic Journal of Computing, 11(1), 1-11, 2004.
Gairing, M.; Lücking, T.; Mavronicolas, M.; Monien, B.;
Rode, M.: Nash Equilibria in Discrete Routing Games
with Convex Latency Functions, Proc. of the 31st
International Colloquium on Automata, Languages
and Programming (ICALP 2004), LNCS 3142, 645–657,
2004.
Gairing, M.; Lücking, T.; Mavronicolas, M.; Monien, B.:
Computing Nash Equilibria for Scheduling on
Restricted Parallel Links, 36th ACM Symposium on
Theory of Computing (STOC 2004), 613–622, 2004.
Gairing, M.; Goddard, W.; Hedetniemi, St.; Jacobs, D.:
Self-Stabilizing Maximal k-Dependent Sets in Linear
Time, Parallel Processing Letters (PPL), 14(1), 75–82,
2004.
Lücking, T.; Mavronicolas, M.; Monien, B.; Rode, M.:
A New Model for Selfish Routing, Proc. of the 21st
International Symposium on Theoretical Aspects of
Computer Science (STACS 2004), LNCS 2996,
547–558, 2004.
Schamberger, S.: On Partitioning FEM Graphs Using
Diffusion, Proc. of the 18th International Parallel and
Distributed Processing Symposium (IPDPS'04), IEEE
Computer Society, 277 (CD),2004.
Elsässer, R.; Lorenz, U.; Sauerwald, T.: Agent-Based
Information Handling in Large Networks, Proc. of the
7th International Symposium on Mathematical Foundations of Computer Science (MFCS'04), to appear.
Gairing, M.; Lücking, T.; Mavronicolas, M.; Monien, B.;
Spirakis, P.: The Structure and Complexity of Extreme
Nash Equilibria, Theoretical Computer Science, to
appear.
Monien, B.; Schamberger, S.: Graph Partitioning with
the Party Libray: Helpful-Sets in Practice, Proc. of the
16th International Symposium on Computer Architecture and High Performance, (SBAC-PAD'04), to
appear.
Schamberger, S.; Wierum, J.-M.: A Locallity Preverving
Graph Ordering Approach for Implicit Partitioning:
Graph-Filling Curves, Proc. of the 17th International
Conference on Parallel and Distributed Computing
Systems, (PDCS'04), to appear.
Schamberger, S.; Wierum, J.-M.: Partitioning Finite
Element Meshes using Space-Filling Curves, Future
Generation Computer Systems Journal, to appear.
13. International Paderborn Computer Chess
Tournament, 10.02.–16.02.2004
Program-Chair “International Parallel and Distributed
Processing Symposium” (IPDPS’04) Santa Fe,
New Mexico, 26.04.–30.04.2004
· Member of the North-Rhine-Westphalia Academy
of Sciences
· Chairman of the Board of Directors of the PC2
· Associated Member of the HNI-Board
· Member of the Board of the "Graduate School on
Dynamic Intelligent Systems"
· Member of the Board of the Graduate College
"Automatic Configuration in open Systems"
· Member of the Board of the “Paderborn Institute
for Scientific Computation“ (PaSCo )
Spin-Offs
m3ITS – Multimedia &more
IT-Services – in the areas of Consulting, Software
development, Networks and Servers, Multimedia (digital Audio & Video content creation, Streaming),
Databases and Web Design.
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Altanis GmbH
(former Tschöke Optimization Systems GmbH)
The object of the company is the Development and
Marketing of Software for Production planning with
the help of mathematical Optimization procedures as
well as enterprise consulting. The leading producer of
wooden materials is among our list of clients.
NRW-Research Network "Modeling and Simulation
in the Production Line of chemical Products", Project:
"Modeling and Simulation of the Process of the Production of Solid Fuel Particles - especially powdered
lacquer – by atomizing melted polymers in an ultrasonic-wave containment field." (FKZ 515-103012-01)
Partner: The Department of Chemistry of the University of Paderborn (H.-J. Warnecke, H.-C. Broecker, A.
Goldschmidt), University of Stuttgart, University of
Halle Wittenberg, DuPont Herberts Automotive Systems, UCB Chemistry GmbH.
Research Area: Numerical Simulation, Parallel Algorithms
DFG-Special Research Area "Massive Parallelism:
Algorithms, Design Methods, Applications" (SFB 376)
Sub-Project A2: Universal Basic Primitives
Sub-Project A3: Balancing dynamic Networks: Foundations and Applications
DFG-Special Research Area "Self-Optimizing Systems
of Mechanical Engineering" (SFB 614)
Sub-Project A1: Model Orientated Self Optimization
DFG-Central Program "Algorithms for larger and
more complex Networks"
Project: "Integration of Network Concepts and
fleet assignment in Flight planning"
Research Area: Combinatorial Optimizations,
Meta-Heuristics, Airline Optimizations.
107
“DELIS - Dynamically Evolving Large-scale
Information Systems”
EU-Projekt (IP-2004-001907). Partner: Universita di
Roma "La Sapienza" (I), Computer Science Institute in
Patras (GR), Telecom Italia Learning Services S.p.A. (I),
Telenor Communication AS (N), Universita di Bologna
(I), Max-Planck-Institut für Informatik in Saarbrücken
(D), University of Karlsruhe (D), Universitat Polytecnica de Catalunya in Barcelona (E), Universitat Pompeu
Fabra in Barcelona (E), University of Cyprus (CY),
Technische Univesität München (D), Charles University in Prague (CZ), Wroclaw University of Technology
(P), University of Cambridge (UK), Universite de ParisSud XI (F), Swiss Federal Institute of Technology
in Zürich (CH), Ecole Polytechnique Federale de
Lausanne (CH).
The objectives of the Integrated Project DELIS are:
1. To understand the structure, self organisation and
dynamics of large scale information systems like the
internet, the World Wide Web, peer-to-peer systems,
with support of methods from statistical physics.
2. To provide methods, techniques and tools for controlling and optimizing such systems, using, among
others, large scale optimization techniques and inspirations from biology.
3. To apply methods from market mechanism and
game theory in order to understand and to organize
the competition of actors in the system for resources
like bandwidth, computing power, data etc.
4. To provide platforms for experiments and prototypical implementations of our findings, in order to
test and compare them, and to make them accessible.
5. To demonstrate the capabilities of our methods,
techniques and tools in two application areas of high
scientific and economic impact.
“ALCOM-FT – Algorithms and Complexity –
Future Technology“
EU-Projekt (IST-1999-14186). Partner: Aarhus Universitet (DK), Max-Planck-Institut für Informatik (D),
Institut National de Recherche en Informatique et en
Automatique INRIA (F), Computer Technology Institute (GR), Universita di Roma (I), Universiteit Utrecht
(NL), Universität Köln (D), Universitat Politecnica
Catalunya, Barcelona (E), University of Warwick (UK).
The main emphasis of the project is on a novel combination of application oriented research in three
important areas – massive data sets, massive and
complex communications and complex problems in
production and plannung, with innovative methodological work on experimental algorithmics and
generic algorithmic methods.
“FLAGS – Foundational Aspects of Global
Computing Systems“
EU-Projekt (IST-2001-33116). Partner: Computer
Technology Institute (GR), National and Kapodestrian
University of Athens (GR), University of Cyprus (CY),
Universitat Politecnica de Catalunya (E).
The main emphasis of the project is to provide a unifying scientific framework and a coherent set of
design rules, for global systems resulting from the
integration of autonomous interacting entities,
dynamic multi-agent environments and ad-hoc
mobile networks.
Current Industry Co-Operations
"Use of Operations Research Procedures in Airline
Optimization"
Employer: Lufthansa Systems GmbH
Workgroup Applied Physics/Integrated Optics
Publikationen
Sohler, W.; Dey, D.; Das, B.; Reza, S.; Suche, H.; Ricken,
R.: “Erbium-doped LiNbO3 waveguide lasers: recent
progress“, Photonics 2004, Cochin, Indien, December
2004 (invited)
Iwanow, R.; Schiek, R.; Stegemann, G.I.; Pertsch, T.;
Lederer, F.: Min, Y.; Sohler, W.: “Observation of discrete
quadratic solitons“, Phys. Rev. Lett., vol. 93, no. 11,
113902, 2004
Peverini, O.; Herrmann, H.; Orta, R.: “Film-loaded SAW
waveguides for integrated acousto-optical polarization converters“, IEEE Transactions on Ultrasonics,
Ferroelectrics, and Frequency Control, vol. 51, no. 10,
1298–1307, 2004
Sohler, W.; Grundkötter, W.; Lee, J.H.; Lee, Y.L.; Min,
Y.H.; Quiring, V.; Suche, H.; Schiek, R.; Pertsch, T.; Lederer, F.; Iwanow, R.; Stegeman, G.I.: “All-optical signal
processing in periodically poled LiNbO3 waveguide
structures“, Proc. 30th European Conference on Optical Communication (ECOC '04), Vol. 2, 192–195,
Stockholm, Sweden, September 2004, paper Tu3.4.1
Sohler, W.; Das, B.; Reza, S.; Suche, H.; Ricken, R.:
“Recent progress on integrated rare-earth doped
LiNbO3 waveguide lasers“, Technical Digest 9th
OptoElectronics and Communications Conference
(OECC '04), Yokohama/Japan, July 2004, p.568,
paper 14F4-1 (invited)
Caccioli, D.; Paoletti, A.; Schiffini, A.; Galtarossa, A.;
Griggio, P.; Lorenzetto, G.; Minzioni, P.; Cascelli, S.;
Guglielmucci, M.; Lattanzi, L.; Matera, F.; Tosi Beleffi,
G.M.; Quiring, V.; Sohler, W.; Suche, H.; Vehovc, S.;
Vidmar, M.: “Field demonstration of in-line all-optical
wavelength conversion in a WDM dispersion managed 40 Gbit/s link“, IEEE J. Selected Topics in Quantum Electronics, vol. 10, no. 2, 356–362, 2004
Baronio, F.; Barthélémy, A.; Carrasco, S.; Couderc, V.;
De Angelis, C.; Lefort, L.; Min, Y.; Pioger, P.-H.; Quiring,
V.; Torner, L.; Sohler, W.: “Generation of quadratic
spatially trapped beams with short pulsed light“, J.
Opt. B: Quantum Semiclass. Opt., vol. 6, p. 182–189,
2004 (invited)
Schiek, R.; Iwanow, R.; Stegeman, G.I.; Pertsch, T.; Lederer, F.; Min, Y.; Sohler, W.: “Staggered und unstaggered solitons in quadratically nonlinear lithium niobate waveguide arrays“, Topical Meeting on Nonlinear
Optics (NLO '04), Waikoloa/Hawaii, August 2004
Iwanow, R.; Schiek, R.; Stegeman, G.I.; Pertsch, T.; Lederer, F.; Min, Y.; Sohler, W.: “Moderately localized discrete quadratic solitons in periodically poled lithium
niobate waveguide arrays“, Conference on Lasers and
Electro Optics (CLEO '04), San Francisco/USA, May
2004
Iwanow, R.; Schiek, R.; Stegeman, G.I.; Pertsch, T.;
Peschel, U.; Lederer, F.; Min, Y.; Grundkötter, W.;
Sohler, W.: “Parametric switching and frequency conversion in PPLN directional couplers“, Conference on
Lasers and Electro Optics (CLEO '04), San
Francisco/USA, May 2004
Pertsch, T.; Iwanow, R.; Schiek, R.; Stegeman, G.;
Peschel, U.; Lederer, F.; Min, Y.; Grundkötter, W.;
Sohler, W.: “Transparent switching in PPLN waveguide
arrays“, Conference on Lasers and Electro Optics
(CLEO '04), San Francisco/USA, May 2004 (invited)
HNI_2004_90_110_GB
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108
Workgroups
Baronio, F.; De Angelis, C.; Pioger, P.-H.; Couderc, V.;
Barthélémy, A.; Min, Y.; Quiring, V.; Sohler, W.: “Lateral
displacement of beams in transversely engineered
Ti:PPLN waveguides“, Technical Digest Topical Meeting “Nonlinear Guided Waves and their Applications“
(NLGW '04), Toronto/Canada, March 2004,
paper TuC 43
Iwanow, R.; Stegeman, G.I.; Schiek, R.; Pertsch, T.; Lederer, F.; Min, Y.; Sohler, W.: “Multi-channel discrete
quadratic solitons in periodically poled lithium niobate waveguide arrays“, Technical Digest Topical
Meeting “Nonlinear Guided Waves and their Applications“ (NLGW '04), Toronto(Canada), March 2004,
paper MA 7
Pertsch, T.; Schiek, R.; Stegeman, G.I.; Peschel, U.; Lederer, F.; Min, Y.; Grundkötter, W.; Sohler, W.:
“Parametric switching and frequency conversion
in PPLN directional couplers“, Technical Digest Topical
Meeting “Nonlinear Guided Waves and their Applications“ (NLGW '04), Toronto/Canada, March 2004,
paper TuA 3
Schiek, R.; Iwanow, R.; Pertsch, T.; Stegeman, G.I.;
Schreiber, G.; Sohler, W.: “One-dimensional spatial
soliton families in optimally engineered quasi-phasematched lithium niobate waveguides“, Opt. Lett. 29,
no. 6, 596–598, 2004
Pioger, P.-H.; Couderc, V.; Barthélémy, A.; Baronio, F.;
De Angelis, C.; Min, Y.; Quiring, V.; Sohler, W.: “Ultrafast reconfigurable spatial switching between a quadratic solitary wave and a weak signal“, Technical
Digest Topical Meeting “Nonlinear Guided Waves and
their Applications“ (NLGW '04), Toronto/Canada,
March 2004, paper TuA 2
Schiek, R.; Iwanow, R.; Stegeman, G.I.; Pertsch, T.; Lederer, F.; Min, Y.; Sohler, W.: “Low power transparent
switching in quadratic nonlinear waveguide arrays“,
Technical Digest Topical Meeting “Nonlinear Guided
Waves and their Applications“ (NLGW '04),
Toronto/Canada, March 2004, paper TuA 1
Das, B.K.; Ricken, R.; Quiring, V.; Suche, H.; Sohler, W.:
“Distributed feedback-distributed Bragg reflector
coupled cavity laser with Ti:(Fe:)Er:LiNbO3 waveguide“,
Opt. Lett. 29, no. 2, 165–167, 2004
Pioger, P.-H.; Baronio, F.; Couderc, V.; Barthélémy, A.;
De Angelis, C.; Min, Y.; Quiring, V.; Sohler, W.: “Spatial
routing at 125 Gbit/s based on noncollinear generation of self-trapped beams in Ti:PPLN film waveguides“, IEEE Photon. Techn. Lett., vol. 16, no. 2,
560–562, 2004
ROSA
(Ultrafast All-Optical Signal Processing in Engineered
Quadratic Nonlinear Waveguides)
Supporting institution: EU
Research group "Integrierte Optik in Lithiumniobat:
Neue Bauelemente, Schaltkreise und Anwendungen"
(Integrated Optics in Lithium Niobate: new devices,
circuits and applications)
with the following individual projects:
· A1 "MgO-doped, periodically poled waveguides
in stoichiometric LiNbO3"
· B1 "Parametric fluorescence generators and
oscillators for the mid-infrared"
40 Gbps Lithium Niobate Optical Modulator
Supporting institution: Korea Electronics Technology
Institute (KETI)
Member of the Program- and Advisory-/SteeringCommittee ECIO '05
Workgroup Philosophy of Science and Technology
Publications
Peckhaus, V.: Jean Nicod (1893-1924). Note
biographique, translated by Max Kistler, Institut
Nicod, Paris, http://www.institutnicod.org/jn.htm.
Peckhaus, V.: Logik als Organon: Erfindung des
Neuen und Beherrschung der Komplexität in den
Wissenschaften. In: Matthias Kaufmann/Andrej
Krause (eds.): expressis verbis. Philosophische Betrachtungen. Festschrift für Günter Schenk zum fünfundsechzigsten Geburtstag, pp. 66–89, Halle a.S.:
Hallescher Verlag 2003.
Peckhaus, V.: The Pragmatism of Hilbert’s Programme.
In: Synthese 137 (2003), pp. 141–156.
Peckhaus, V.: Dignãga’s Logic of Invention. In: Ivor
Grattan-Guinness; B.S. Yadav (eds.): History of the
Mathematical Sciences, pp. 97–107, New Delhi:
Hindustan Book Agency 2004.
Peckhaus, V.: Calculus Ratiocinator vs. Characteristica
Universalis? The Two Traditions in Logic, Revisted. In:
History and Philosophy of Logic 25 (2004), pp. 3–14.
Peckhaus, V.: Schröder’s Logic. In: Dov M. Gabbay;
John Woods (eds.): Handbook of the History of Logic,
Vol. 3: The Rise of Modern Logic: From Leibniz to
Frege, pp. 557–609, Amsterdam etc.: Elsevier North
Holland 2004.
Peckhaus, V.: "Aber vielleicht kommt noch eine Zeit,
wo auch meine Arbeiten wieder entdeckt und gelesen
werden": Die gescheiterte Karriere des Ernst Zermelo.
In: Wolfgang Hein; Peter Ullrich (eds.): Mathematik
im Fluß der Zeit. Tagung zur Geschichte der Mathematik in Attendorn/Neu-Listernohl (28.5. bis
1.6.2003), pp. 325–339, Algorismus 44, Augsburg:
ERV Dr. Erwin Rauner Verlag 2004.
Peckhaus, V.: Garantiert Widerspruchsfreiheit Existenz? In: Bente Christiansen; Uwe Scheffler (eds.):
Was folgt? Themen zu Wessel, pp. 111–127, Logische
Philosophie, Berlin: Logos Verlag 2004.
Peckhaus, V.: Paradoxes in Göttingen. In: Godehard
Link (ed.): One Hundred Years of Russell's Paradox.
Mathematics, Logic, Philosophy, pp. 501–515, de
Gruyter Series in Logic and Its Applications 6, Berlin,
New York: de Gruyter 2004.
Peckhaus, V.: Otto Friedrich Gruppe und die Logische
Frage. In: Ludwig Bernays (eds.): Otto Friedrich
Gruppe 1804-1876. Philosoph, Dichter, Philologe,
pp. 49–71, Rombach Wissenschaft. Reihe
Paradeigmata 3, Freiburg i.Br.: Rombach Verlag 2004.
Peckhaus, V.: 13 Articles in: Dieter Hoffmann, Hubert
Laitko, Staffan Müller-Wille (eds.): Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Heidelberg: Spektrum Akademischer Verlag, Vol. 1 (2003):
Bolzano, Boole, Carnap, Curry, Dingler, Vol. 2 (2004):
Frege, Gödel; Vol. 3 (2004): Peirce, Tarski, van der
Waerden, Whitehead, Wolff, Zermelo.
Peckhaus, V.: Review of Eckart Menzler-Trott:
Gentzens Problem (2001). In: Bulletin of Symbolic
Logic 9 (2003), pp. 508–510.
Peckhaus, V.: Review of George Boole: Selected
Manuscripts on Logic and Its Philosophy, Ivor Grattan-Guinness, Gérard Bornet (eds.) (1997). In: The
Review of Modern Logic 9, no. 1 & 2 (November
2001-November 2003), pp. 221–224.
Peckhaus, V.: Review of Rudolf Boehm: Topik (2002).
In: History and Philosophy of Logic 25 (2003),
pp. 155–156
Peckhaus, V.: 13 Reviews in: Mathematical Reviews
2003.
Peckhaus, V.: 15 Reviews in: Zentralblatt für Mathematik und ihre Grenzgebiete 2003.
Ghin, M.: Naturwissenschaft und Phänomenologie. In:
Erwägen Wissen Ethik 15 (2004), pp. 163–165.
Ghin, M.: Review of Thomas Metzinger (2003): Being
No One: The Self-Model Theory of Subjectivity. In:
Human Nature Review 3 (2003), pp. 450–454.
40 Jahre Institut für Kybernetik (40 Years Institute
of Cybernetics), 26-28 August 2004, Universität
Paderborn.
· Member of the managing board of the Deutsche
Vereinigung für Mathematische Logik und Grundlagenforschung der exakten Wissenschaften (DVMLG).
· Member of the scientific board of the Gesellschaft
für Wissenschaftsgeschichte.
HNI_2004_90_110_GB
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Seite 109
· Permanent member of the German National Committee of the Division for Logic, Methodology and
Philosophy of Science in the German National Committee of the Division of History of Science of the
International Union of the History and Philosophy
of Science.
· Member of the editorial board of the journal The
Review of Modern Logic
· Member of the editorial board of the journal Historia Mathematica
· Member of the editorial board of the journal History
and Philosophy of Logic
· Member of the scientific committee of the journal
Philosophia Scientiae. Travaux d'histoire et de
philosophie des sciences (Nancy)
· (Co-) editor of the journal Mathematische Semesterberichte
· Review editor for the history of logic of the journal
Bulletin of Symbolic Logic
· Member of the Program Committee of the Colloquium Logicum 2004 of the Deutschen Vereinigung für
Mathematische Logik und Grundlagenforschung der
exakten Wissenschaften, 17.-19. September 2004 in
Heidelberg.
109
Formal Languages as Universal Languages and the
Origins of Formal Logic, supported by AntorchasDAAD (Argentinian-German Exchange of Researchers
in Projects)
Scientific Biography of Ernst Zermelo (1871-1953),
supported by DFG
Co-editor of the Oskar Becker edition project,
supported by DFG
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Seite 110
Location Map
Heinz Nixdorf Institute:
Heinz Nixdorf Institute:
How to find us
How to find us
Travelling by car
From the A33 motorway take the exit
Paderborn-Elsen. Turn onto Bundesstraße (main road) B1 towards Bad Lippspringe/Detmold. After approx. 1.5 km
leave Bundesstraße B1 at the exit Paderborn/Schloss-Neuhaus. Continue straight
ahead at the traffic lights (Heinz-NixdorfRing, Dubelohstraße) onto the HeinzNixdorf-Ring and turn left at the next
set of lights (Heinz-Nixdorf-Ring,
Fürstenallee) onto Fürstenallee. The Heinz
Nixdorf Institute is approx. 300 m along
this street on the right-hand side.
Travelling by air
From Paderborn/Lippstadt Airport take
bus No. 400/460 towards Paderborn Hbf
(main station). From the main station take
bus No. 11 towards Thuner Siedlung and
get off at the MuseumsForum stop (total
journey time approx. 50 minutes).
Travelling by train
From Paderborn Hbf (main station) take
bus No. 11 towards Thuner Siedlung and
get off at the MuseumsForum stop (total
journey time approx. 10 minutes).
Fuerstenallee 11
33102 Paderborn
14.02.2005
11:43 Uhr
Seite 2
Imprint:
Imprint:
Publisher
Heinz Nixdorf Institute (HNI)
(President)
Editors & Coordination
Dipl.-Wirt.-Ing. Christoph Wenzelmann (Executive Editor)
Dipl.-Ing. Michael Brökelmann
Alexandra Dutschke
Dipl.-Wirt.-Ing. Thomas Müller
Phone: +49 (0) 5251|60 62 65
Phone: +49 (0) 5251|60 61 85
Phone: +49 (0) 5251|60 62 67
Phone: +49 (0) 5251|60 62 81
E-Mail: redaktion@hni.upb.de
Contact
Kerstin Hille | Ursula Lüttig
Fuerstenallee 11
33102 Paderborn
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Fax: +49 (0) 5251|60 62 12
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Period of Review:
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ISSN 1619-8395
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14.02.2005
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HEINZ NIXDORF INSTITUTE Annual Report 2004
HEINZ
Annual R

- Heinz Nixdorf Institut

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