first edition, November 2009
Transcription
first edition, November 2009
Asset | Econometrics Magazine Volume 18, first edition, November 2009 The mother of... New Section! Per Capita Prenucleolus Tr iangel Millennium Prize Problems Special Summer Contest ekst <On confidence in teamwork > o u r s t o r ie s p r eface COLOPHON Nekst is the quarterly magazine of Asset | Econometrics © 2009 We consider teamwork as the cornerstone of our business approach. Teamwork allows us to capture opportunities for the group as a whole. And in doing so to move beyond our individual boundaries. If you see yourself as an ambitious team player we would like to hear from you. For our Analyst Program, NIBC is looking for university graduates who share our enthusiasm for teamwork. Personal and professional development are the key-elements of the Program: in-company training in co-operation with the Amsterdam Institute of Finance; working side-by-side with professionals at all levels and in every financial discipline as part of learning on the job. We employ top talent from diverse university backgrounds, ranging from economics and business administration, to law and technology. If you have just graduated with aboveaverage grades and think you belong to that exceptional class of top talent, apply today. Joining NIBC’s Analyst Program might be the most important career decision you ever make! Want to know more? Surf to www.careeratnibc.com. Correspondence Asset | Econometrics Tilburg University Room E 110 P.O.Box 90153 5000 LE Tilburg Telephone: 013 466 27 47 info@Asset-Econometrics.nl www.Asset-Econometrics.nl Editorial staff Marleen Balvert Tess Beukers Frans Fonville Harold van Heijst Dennis Jaheruddin Bart Kruize Whitney Pattinaja Fang Qi Wu Contributions Geert Alkema Dennie van den Biggelaar Twan Burg Emile van Elen Eefje Godding Mirjam Groote Schaarsberg Gerwald van Gulick Bas Hamers John Kleppe Edyta Korpas Kay Mennens Freek Mulders Robbert van Oosten Inge Pulles Anouk Rennen Martin Salm Renata Sotirov Tycho Speekenbrink Nienke Vugts Lay-out & Frontpage Bas Verheul Let me tell you something about people who talk about their experiences all the time. Whenever they tell their stories, I wonder how exciting their life would be, since I usually conclude they have done almost anything you can imagine. Would it not be great to take on new challenges every now and then? By now, you are probably expecting a story about my experiences as the new editor-inchief of Nekst. But that is exactly what I mean: I would like to avoid stories about myself. Therefore, this preface will be mostly about you, since you are the one person I care for the most. Besides the editorial board of course, because I owe them big time. Learn more about these lovely volunteers in the introduction section. They spent a lot of time and effort on this edition of Nekst in order to create an interesting magazine for you. And you are, as you have probably guessed, the reader of this magazine. You are most likely an econometrician, but you can also be a recruiter for a company, Pascal’s mother – get to know her in this edition – or someone who just found this magazine in the train. You are extremely important to any editor of Nekst. We write for you and most important: about you! Do you realise that, without you, there would be no Nekst at all? We do not need our own stories, as I mentioned before, we need to know your stories! You can already read a lot of stories in this edition. Please, keep informing the editorial board of the activities you attend, your greatest passion and your favourite teacher. Nonetheless, how could I ever tell anything about my own experiences? I just started in my function as editor-in-chief. Fortunately, I have the advantage of years of dedication to Nekst of my predecessors, varying from great editors to even greater columnists. Therefore, I would like to take the opportunity to thank the previous editorial board along with the last editor-in-chief, Emile van Elen, and all the people who contributed to Nekst in the past years. Hopefully, you are also willing to share your stories with someone of the editorial board of Nekst in the future. Because with your help, I promise we will do our utmost to make Nekst to an even greater success this year! Original design SintLucas@work Interested? Please contact us: NIBC Human Resources, Frouke Röben, recruitment@nibc.com. For further information see www.careeratnibc.com. NIBC is a Dutch bank that offers integrated solutions to mid-market clients in the Benelux and Germany. We believe ambition, teamwork, and professionalism are important assets in everything we do. 7+(+$*8(f/21'21f%5866(/6f)5$1.)857f1(:<25.f6,1*$325(f:::1,%&&20 Printing Drukkerij Orangebook Circulation 650 Frans Fonville Editor-in-chief Nekst 1 - November 2009 a b le o f C o ntent s 01 Preface 05 From the board 07 Nekst committee 2009-2010 08 The mother of Pascal Heuijerjans 10 MAK-camp & TIK-week 13 Welcome Week 14 Business Interview Flow Traders 17 Introduction Activity 18 Column Gerwald van Gulick 19 GMM and Drink 20 Triangel 24 Exchange Report 26 Living in Lodges 29 Hart van Brabantloop 32 Practical Report 34 The Teacher 37 Freshmen Activity 38 Special: Board to Board 40 Business Interview CBS 43 National Econometricians Football Tournament 44 Opinion Poll 45 Column Martin Salm 46 Asset International Conference 50 The Passion of Maartje de Ronde 52 Special: Millennium Prize Problems 55 Committee Profile: OID 56 Tilburg University Cantus 57 Puzzle 58 Graduates 59 Planning 60 Quatsch Advertisements Page NIBC cover Ernst & Young 04 Watson Wyatt 06 All Options 12 Flow Traders 16 Rabobank 22 KPMG 28 PGGM 36 CBS 42 Ministerie van Financiën 48 SNS REAAL cover AEGON cover Excellent enough to make a difference? T he ch o c o late b o x f r om the boa r d Dear members, let us go back one year in time. What intentions did you have for your future at that time? Did you expect you would be doing what you are doing right now in those days? For some of you, it could be the case that things turned out exactly as foreseen. For others, things turned out completely different. I definitely (Aankomende) actuarissen – M/V Bij Ernst & Young werken accountants, belastingadviseurs en gespecialiseerde adviseurs in vrijwel elke richting van de financiële, juridische en notariële dienstverlening. Met ruim 4.600 medewerkers verspreid over 23 kantoren zijn we een van de grootste adviesorganisaties in Nederland. Er is bij ons altijd ruimte voor ambitieuze starters die het verschil willen maken. Ga jij de financieel directeur van een verzekeraar adviseren over een nieuwe premiestructuur of het toeslagenbeleid van een pensioenfonds toetsen? Of ben je meer geïnteresseerd in de modellen die beleggingsfondsen gebruiken bij de waardering van hun portfolio’s. Ernst & Young Actuarissen biedt de mogelijkheid om je breed te ontwikkelen op zowel inhoudelijk als persoonlijk vlak. Wij zijn onderdeel van een Europese organisatie waarin actuarissen uit alle financiële centra van Europa samenwerken. In de dynamische markt waarin wij werken hebben wij continu nieuwe adviseurs nodig. Voor onze kantoren in Amsterdam en Utrecht zijn wij op zoek naar (Aankomende) actuarissen. Ben je gedreven, leergierig, analytisch en adviseer je liever dan dat je wordt geadviseerd. Dan heb jij de instelling die wij zoeken. Wij bieden jou de mogelijkheid om na je studie als beginnend actuaris aan de slag te gaan. Ook kun je tijdens je studie voor een dag in de week aan de slag gaan als werkstudent of je afstudeerscriptie schrijven over een praktijk probleem. Voor meer informatie kun je contact opnemen met Dieuwertje Huizer, 06-21252814 of dieuwertje.huizer@nl.ey.com. Solliciteren kan op www.ey.nl/carriere belong to the latter group. The same holds for my fellow board members. Tom Hanks, in the role of Forrest Gump, says in the film of the same name: “Life is like a box of chocolates... you never know what you’re gonna get.” I believe we, as the current board, had more or less this feeling only a few months ago, when we decided to apply for a spot in the 2009-2010 board of our association. We took a bonbon out of the chocolate box, while we only were acquainted with it from the outside. Just like we only could see a year in the board from the outside. But once we would bite in this bonbon, once we would be on the board, we would taste the flavours of the inside. Not until then, we could say whether we liked it or not. Well, dear members, I can tell you now, I definitely like the flavours of the inside. I will try to explain why, by means of focusing on two of those flavours. activities in detail in this edition of Nekst. On 22 September, the National Econometricians Football Tournament (NEFT ) took place in Rotterdam. Our association participated with seven enthusiastic teams, which was the highest number of participating teams of all the associations. On 17 September, the first freshmen activity took place. Although there were not as many participants as we hoped for, it was a very pleasant evening. A third activity took place on 26 September: Hart van Brabantloop. Of course, our association participated with a team. During this beautiful day many of us broke their personal record. Our Asset | Econometrics team finished as 68 th, leaving thirty competing teams behind us. What a marvellous result, especially when compared to other years. On 28 August of this year, our board - at that time still a candidate board - had to gather at 7:00 o’clock for the start of our board weekend. The board members at that time, which organised the whole weekend, would join us later on. I guess they preferred to lie in their beds at this early hour during the vacation. During this morning, we had to work on the famous farm of our professor mister Peters. While working on different heavy, but nice, odd jobs, I tasted a, let us call it the first, flavour of the inside of the bonbon. It was the sweet flavour of team spirit. It is the same flavour we taste when we work on several activities for our association, while facing deadlines and striving for the utmost quality of activities. Those activities bring me to a second lovely flavour of a board year: the flavour of successful activities. Of course, only due to your participation these activities could be successful, so thank you for this. It is nice to see members enjoying the activities organised by our association. At this time of writing, several activities have already passed. I will only shortly mention them, since you can read about those Name: Harold van Heijst Position: Chairman Asset | Econometrics Board 2009-2010 One year back, we did not expect we would be doing what we do right now, but we took the bonbon, and we are glad we took this one. We hope that the many activities that lie ahead of us in this academic year will also turn out to be a success. Hopefully we will see you soon at (one of ) those activities! On behalf of the Asset | Econometrics board, Harold van Heijst Chairman Asset | Econometrics Nekst 1 - November 2009 A \ R a ` U R a N N [dR g V T R c R _ Z\ T R [ c N [ R R [ ] R [ ` V \ R [ S \ [ Q ` \ Z Q R V [ Q R e N a V R c \ \ _ T R ] R [ ` V \ [ R R _ Q R [ a R O R ] N Y R [ A n int r o d u cti o n N ekst C ommittee 2 0 0 9 - 2 0 1 0 My name is Bart Kruize, a third year student, and one of the new Nekst committee members this year. Besides doing my work for Nekst, I am also a member of the committee organising the Orientation and Information Day. A few of my interests are: football, music, and history. Besides playing futsal in a student competition, I like hanging out with friends and going to the great drinks and activities that Asset | Econometrics organises. I hope my efforts for Nekst will contribute to a magazine that is both interesting and fun to read. I am Dennis Jaheruddin, a new member of the Nekst committee. Last year I organised several drinks and activities, a task I really enjoyed. This year I am the chairman of the Business Research Programme, which is definitely something to look forward to. I am a third year student in Econometrics and whenever I am not busy with my courses, I will often be spotted where the beers are cold and the music is good. Though my favourite hobby is sleeping late, I am also quite fond of playing chess and will accept any challenge to a table tennis match. My name is Harold van Heijst. This academic year I am the chairman of our beautiful study association. Like a lot of my fellow Nekst committee members I am a third year student in Econometrics & OR. Although this year you will barely see me attending lectures. Last year I gained some experience in writing articles, as I was a member of the Almanac committee. In my spare time I like playing the drums. I will gladly contribute to the continuation of the high standard of our magazine. I hope you will all enjoy reading Nekst. (OEVEELISERNODIGOMONZEPENSIOENENINDETOE INVESTERINGSSTRATEGIEÑN7EWERKENVOORTOONAAN KOMSTTEKUNNENBETALEN2EKENINGHOUDENDMET GEVENDEBEDRIJVENWAARMEEWEEENHECHTERELATIE DEVERGRIJZINGENDEECONOMISCHEONTWIKKELINGEN OPBOUWENOMTOTDEBESTEOPLOSSINGENTEKOMEN +UNNENWESTRAKSNOGSTEEDSZORGELOOSEENPOTJE /NZEMANIERVANWERKENISOPENGEDREVENENINFOR BILJARTEN"IJ7ATSON7YATTKIJKENWEVERDERDANDE MEEL7EZIJNOPZOEKNAARSTARTENDEENERVAREN CIJFERS7ANTCIJFERSHEBBENBETREKKINGOPMENSEN MEDEWERKERSBIJVOORKEURMETEENOPLEIDING!CTU %NOPMAATSCHAPPELIJKEONTWIKKELINGEN$ATMAAKT ARIAAT%CONOMETRIEOFTOEGEPASTE7ISKUNDE+IJK ONSWERKZOINTERESSANTENAFWISSELEND7ATSON VOORMEERINFORMATIEOPWERKENBIJWATSONWYATTNL 7YATTADVISEERTONDERNEMINGENENORGANISATIES WERELDWIJDOPHETGEBIEDVAN@MENSENKAPITAAL PENSIOENENBELONINGSSTRUCTURENVERZEKERINGENEN 7ATSON7YATT :ETJEAANHETDENKEN My name is Bas Verheul and I am a second year student Econometrics & OR. This year I have the privilege to work on the layout of Nekst, after learning the ins and outs from my fellow committee member Marleen during last year. In my spare time I like going out and doing some fun things with my friends. My favourite sports are tennis and mountain biking in the weekends. If I have some time left during the day I also like playing guitar. Bart Kruize Dennis Jaheruddin Harold van Heijst Bas Verheul Fang Qi Wu Marleen Balvert My name is Tess Beukers and I am a second year student now. I became an active member of Asset | Econometrics in my first year. I first joined the Freshmen committee where I was responsible for the finances and we organised lots of nice activities. After six months, I also joined the Nekst committee, because I like writing articles. When I am not busy studying or writing, I like reading books, skating and going to the gym with some friends. I am also learning how to play tennis. Tess Beukers Whitney Pattinaja Hello there! The name is Fang Qi Wu - Fang Qi being my first name - and I am proud to proclaim my part in publishing this magazine. As a freshman in Econometrics & Operations Research, I am, unfortunately, void of any Astrics experience, but I will get rid of that status soon enough. Apart from writing I never get bored of reading, pestering friends in a loving way - and playing piano and violin, although I started the latter only a year ago. I bet you cannot wait to read all the fun stuff I am going to write! My name is Marleen Balvert. As most of you probably already know, I am this year’s secretary of Asset | Econometrics. I am also the board member to be lucky enough to coordinate the Nekst committee! Last year I was in this committee as well and all of us had a lot of fun writing, editing, meeting and chatting together. This year, we have some new members and some members of the previous committee. I have a lot of confidence in this year’s editors and I am sure we will make four nice editions of Nekst! I am Whitney Pattinaja and I can proudly say that I will be a committee member of this nice magazine for the first editions. Last year I was also a member of the Nekst committee and I really enjoyed reading and writing different kinds of articles. I am a third year student in Econometrics & OR. At the moment, I am a board member of Asset | Econometrics. In my spare time I really enjoy hanging out with friends of econometrics and friends of NoN, a group of friends within student association TSR Vidar. Nekst 1 - November 2009 r o m M alden t o H e y th u y s en T he mothe r of P ascal H euije r jans The Nekst committee is proud to introduce a new section: The mother of… In this new section, we will have Pascal and Janny Some children are much like their father, others are much like their mother. It is not hard to see where Pascal got his looks from: he is very much like his father. But from the inside, he also has some characteristics of his mother. As mentioned before, they both like to talk a lot. Furthermore, they both like to keep their living space cleared up and they like mathematics. And when something needs to be done, they both accept the job themselves easily. Furthermore, they like playing games and sports a lot. They often watch crime scene investigation series together, like Cold Case, CSI and Bones. Mother and son also enjoy cooking in the kitchen. Janny: “I like to bake an apple pie.” “Those are really nice!” is the immediate response of Pascal. an interview with the mother of one of our members. The interview will be about her, her child and their lives together. The very first mother to give an interview with Nekst is Janny Heuijerjans-van Burk, mother of Pascal Heuijerjans. Nekst was invited for dinner and had a nice chat with Janny. Name: Janny Heuijerjans -van Burk Mother of: Pascal Heuijerjans Residence: Heythuysen Janny’s youth Pascal lives in Heythuysen, which is close to Roermond. We are welcomed by Pascal and both his parents. But although Janny lives in Limburg, she does not speak the dialect. She tells us that she was born in Malden in 1959, where she lived until she was nine years old. At that time, she moved to Nijmegen with her parents and all of her brothers and sisters. She has one sister and five brothers, so she grew up in quite a big family. “I liked the life with all my brothers and sisters, but I never wanted to have so many children myself,” she tells us. That is why Pascal only has one younger brother, Stefan. But that is not the only difference between Janny’s life and Pascal’s life. Janny only got to finish lower general secondary education (currently known as VMBO). Just like Pascal she liked mathematics a lot and wanted to study mathematics. But instead, she had to help her parents with their household. She, her brothers and her sister worked at a farm. Her father had a van in which he took them and other children in the neighbourhood to the farm, where they helped taking the beetroots from the ground, picking up potatoes and more jobs like that. Pascal was born. Janny stayed at home to care for Pascal, which she did with much pleasure. After a few years, in 1990, a second son, Stefan, was born. Now she had two young boys to care for. On the pictures of Pascal that were shown to us, we could see that he was a cheerful little boy. As you can see on the picture, he was always in for a small joke. Janny also tells us that Pascal was a sweet child when he was young. Besides that, he was able to speak whole sentences at a very young age and he let Janny and Jo know about this all the time: talking was one of the main hobbies of Pascal. And it still is. Janny tells us about something that usually happened when they drove in the car at night. Pascal used to ask to his parents: “Where is the moon?” “Behind the clouds,” Janny and Jo would answer. But Pascal would not consider this to be a satisfying answer and would ask: “Where behind the clouds?” This could go on like this for quite some time. In 1994, Pascal and Stefan both went to primary school, so Janny had some spare time. Therefore, she decided to get a job for three days a week during the times Pascal and Stefan were at school. At the moment, she works in a pharmacy; In September 1983, something changed Janny’s life completely. She went on a holiday with a friend to Mallorca. There she met Jo Heuijerjans on 8 September. They fell in love. Unlike most people who fall in love during their holidays, Janny and Jo saw each other many times after this holiday and a serious relationship had begun. Because Janny lived in Nijmegen and Jo in Frankfurt they had to travel a lot. But as it should be with true love, this could not keep them apart. That is why Janny and Jo married in 1987. Jo got a job in Limburg, so they moved to Heythuysen. The kids On 6 January 1988, something that still has a big impact on the lives of our members happened: Pascal singing: “It is chocolate sprinkles!” raining Nekst 1 - November 2009 Pascal and Janny goes babysitting; helps people cleaning their homes and since three weeks she also delivers the mail. Besides that she likes Sudoku and reads books whenever she has the time. “But the three men in our house do, so sometimes I watch the game with them.” At primary school, Pascal found the classes very easy. Sometimes they had combination groups, in which children from two different years were combined. For example, when Pascal was in his fifth year (Dutch system), they had a group which existed half of people from the fifth and half of people from the sixth year. But when the teacher started to explain something to the sixth year, Pascal also listened to the teacher and learned about this already. Pascal grew older When we asked what Pascal was like when he grew older, Janny is very clear about this: “He was quite an adolescent. He used to romp around a lot with his brother. They challenged each other all the time. But of course, I was still the boss of the house.” At secondary school Pascal had a lot of hobbies. He went to swimming lessons five times a week, and in the weekends he also had a match. Stefan was also very busy with sports, so both children were out a lot. “That was not always fun, because I like it when my children are at home.” When Pascal was a kid, Janny did not have much trouble with him. “He played a lot with Stefan and a friend who lived in the same street.” They played a lot in the streets and did games like hide-andseek. Pascal has always been and still is a big fan of Ajax. Unfortunately, his father is a big fan of PSV. Both of them watch football matches a lot. “I do not like to watch sports games,” Janny tells us. Janny likes spending time with her husband and kids very much. They play many games together, in which Pascal sometimes had difficulties in accepting his loss. But he learned to accept it, although it is still hard for him to lose a game against his father. Janny explains: “He does not mind if I win the game, because I play for fun, but Jo also plays for winning.” When we ask Janny what characteristics Pascal still needs, she can only think of one thing. Pascal has a hard time staying focused on one task. The future We also liked to know whether Pascal is the perfect son-in-law. “I think he is,” Janny tells us. “He is not lazy, can be very sweet, he is very social and cares for other people. I did my job in raising Pascal rather well. At least he can do his own laundry now!” But this also takes us to the next question: is Janny the perfect mother-in-law? “That depends on the demands I need to meet. I would like to babysit the grandchildren sometimes, but not too often please.” To finish the interview, we asked Janny if she had one last advice for Pascal. “Keep going the way you are now,” she answered. “I am proud of you, and I hope you will continue enjoying your time at Tilburg University and keeping up the good work.” | Text by: Marleen Balvert Nekst 1 - November 2009 nt r o d u cti o n t o til b u r g u ni v e r s it y M ak - camp & T ik - week There is really very much to tell about the magnificent MAK-camp experience of the econometrics group, This dolorem year, velesequat the TIK-week estie dolobor took place se from delesse Monday quamet 17ver August si. until Friday 21 cum August veliquis – fornos most eugait of us nosto even conulup better known as France. I would really like to share it all with you up to the smallest details, but that would zzriliquat vel dipis gait, velisweek dolobore dipit lamet, comaliquat ad er sim del till Saturday! Thealiquatummy TIK-week is num an introduction for all students startingvelessit their studies at magnibh Avans, Fontys or fill this whole edition of Nekst, so I will restrict myself to a small summary containing only the brightest dolobore University. conse ver sum nos autat, vel eum aut lor sit aliquisit nonsed Tilburg Many freshmen ofnum theilisi. Econometrics programme were aliquis also participating. I will tell you highlights of the MAK-camp. almost facilla commy everything nullaore about dolorerit, what happened si et dunt during velendre this week. modio con hendre Name: Robbert van Oosten Age: 19 Begin studies: 2008 My fellow mentor, Anouk, arrived at the meeting place near Eindhoven central station just in time, although she slept so well and so long that she had missed the train. The groups were to be made and together we started looking for our kids. Between all the sad not-French people, who could only look desirably in our direction, there were seventeen happy faces that joined our French crew. But the kids did not know what Anouk and I had prepared for them. Not only had all of them to introduce themselves by telling their name, age and other information, they also had to answer questions for which they were not prepared, such as: what was the most embarrassing moment in your life, how long do you shower, what fruit would you like to be and so on. As soon as the ice was broken we were called for canoeing. If there were countries which had not been thrown into the water by the dreaded French, then they deserve a reward! ‘Vive la France’ sounded over the haunted waters almost unstoppably. All dried up and fed afterwards, we went to the forest games. On our way we sang our French song: ‘Voulez vous couchez avec moi?’ Vive la France! In the forest, Anouk set a record with jeanshanging which was three times as long as the record of last year. France climbed over a ten metre high beam twice; everyone managed to get through a totally dark labyrinth and switched cloths; and above all the whole French crew ran voluntary into the ‘Famous Tarzan’ (the most dirty ditch that you can imagine) shouting ‘Vive la France’. The remainder of the day was not captivating enough to mention; apart from telling about the show and the party of course! Amazing! In the show, Marleen and Freek went on stage to steel the hearts of the jury and not only did they succeed, but Marleen also broke an egg on Freek’s head after she heard they had won. The party was so nice, not one member of France could be found in his or her bed. On the contrary, they were all dancing their asses off on the dance floor till the music had long been stopped and they got kicked out! The next day there was a lot to do! Not only did we learn break dancing and self-defence, but we also won the crate race by far and we got totally dirty with custard and mud during another game. I should not forget to mention that Anouk got her head into something so incredibly nasty during the nasty twister game. Furthermore, we made a huge chain with all our clothes. For this last challenge, we first put our total suitcase contents on our bodies and then took everything off during the game (including our underwear). We created a chain almost as long as the Chinese Wall! Vive la France! We celebrated the last party with none other than the Asset | Econometrics board members! And we celebrated till we dropped. Not just because we like to party, but also because during this evening the best group of the MAK-camp would be chosen. Of course we wanted to be that group! Italy was also a very nice mentor group, so we were very anxious to know the outcome. Eventually the MAKkers gave the title of MAK-group of the camp to… France! We won! And as a reward we could drink one hundred free beers at Café Philip on 15 September, which we have enjoyed a lot. The next day, all tired out and suffering from a terrible hangover, but very happy, we went to the bus early in the morning and waved the MAKkers a happy goodbye! See you next year? Canoeing at the MAK-camp 10 Nekst 1 - November 2009 eril utat vent nullandre del dignim Equat. Ut utpat. 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I nt r o d u cti o n t o til b u r g u ni v e r s it y W elcome week Qualification Rounds & Venues 10 Nov University of Amsterdam 12 Nov University of Groningen 17 Nov Tilburg University 19 Nov Maastricht University 23 Nov Delft University of Technology 25 Nov Erasmus University Rotterdam 27 Nov Utrecht University 3 Dec Final at NYSE Euronext Amsterdam Winner takes all! + Enter Traders Trophy Netherlands and see if you have what it takes to be a winning trader! + 1st prize! Take the opportunity to experience what it’s like to be a trader. At the same time you participate in a competition to become the best student trader of All Options is a leading international The Netherlands. All students can enter. option trading and market making Traders Trophy Netherlands is part of the worldwide Traders Trophy competitions. company in listed equity derivatives on 30 exchanges globally. All Options is headquartered in Amsterdam with offices Organised by Oxyor, co-sponsored by NYSE Euronext, and in Switzerland, Curacao, Hong Kong, Financiele Dagblad as media partner. mainland China and Chicago (2010). Register today! youcantrade.nl When I decided that I wanted to study and live in Tilburg, I knew that it would be connected to many difficulties: a strange environment, a different culture and new challenges. I was a little afraid, like every freshman. Then I heard about the Welcome Week, whose purpose was to prepare us for changes. As the beginning is always tough, so I am even more grateful for the help of Tilburg University. First Day The Welcome Week started on 24 August. The main idea of the first day was to get acquainted with the new environment. For that purpose, we met our buddies. I appreciate their commitment, because in my opinion only students could give us some insight into the real life in Tilburg. They showed us the whole campus and told the most important information about buildings and stuff. It enabled us to meet new people, but also to feel a little bit at home. Furthermore, during the information market we could get an idea about many organisations. These organisations create an interesting student life. Second Day The second day consisted of very interesting workshops. Personally, I think that it was the most attractive day, because we could find out more about Tilburg and the Dutch culture. I participated in the workshop about Tilburg. We talked about the history of the city and we discussed advantages of living here as well. We concluded that Tilburg has a lot to offer and that encouraged me to discover Tilburg on my own. The second workshop was a lesson in the Dutch language. We quickly found out that learning this language is not an easy task. Third Day The next day was not very exciting for me, because it was immigration day. My country, Poland, belongs to the European Union, so I did not have many problems with these issues. However, I know from my friends that it was a long day, because ‘paper matters’ are never easy. This exhausting day ended with a meeting at the sports centre. The sports centre of Tilburg University has many facilities, that can help to relax in an active way after the lectures. Fourth Day On the fourth day, we visited the most important places of Tilburg. We visited shops, the central station and places where we can gather and have a good time with our friends. Furthermore, we got an official welcome from the City Hall, which gave us more information about Tilburg. We started the evening watching a movie: ‘Alles is Liefde’ (‘Everything is Love’). It told us more about the mentality of Dutch people. However, the most attractive event of that night was the party: ‘The world comes to Tilburg’. During this party, we could present our own countries, because we were allowed to dress in national outfits. It showed the variety of many cultures! Fifth Day The last day was also very busy. We spent time developing our communicative skills. For the first time, we could meet Dutch students. There were different activities, which helped us to meet new people and also to show a little of our own personalities. The competition during the games on that day created team spirit and improved cooperation between students. At the end of the day, there was a Holland Party. It convinced us that having a good time is also a very important aspect of studying at Tilburg University. Name: Edyta Korpas Age: 20 Begin studies: 2009 The multiplicity of activities helped us a lot to figure out every aspect of living and studying in Tilburg. We could not only see how the university works, but we also gained other information about social life. I must admit that the Welcome Week helped us overcome fears that are connected to the start of a new year. On behalf of all foreign freshmen, I would like to thank everybody, who contributed to the organisation of an interesting and helpful Welcome Week. | Nekst 1 - November 2009 13 ein g o n the winnin g team business inte r view flow t r ade r s What were you doing on 21 September? Flow Traders was offering an interview to Nekst. A full description of the company was given by Folkert Joling, a young and energetic man of thirty years, probably not coincidentally the same age as our association! He has been working for Flow Traders for three years now and is still very enthusiastic about his job. Name: Folkert Joling Age: 30 Position: Trader Personal Folkert Joling was born in Ede. He went to high school in Harderwijk and he studied applied mathematics in Enschede. He took part in some committees during his studies and followed an internship as a trader in Amsterdam in his final year. Since high school he has been very enthusiastic about the stock market and he decided that he wanted to work at Flow Traders. It did not take long before they noticed his enthusiasm and up till now, he has been working as a trader at Flow Traders. Some econometricians are working at the company, too. Joling indicates that his analytical skills are most useful in his job. These skills help him to oversee various situations and quick calculations are made by heart. Company Profile Flow Traders was set up five years ago by four talented traders. At this moment, the company counts over a hundred employees inside and outside the Netherlands. Two and a half years ago, a trading centre was set up in Singapore and another office was opened in New York this year. Nowadays, there are over fifteen employees responsible for the operations in Singapore. Some of them are still working in Amsterdam for the Asian markets. The last few months, new employees are being trained for their new functions in the United States of America, so Flow Traders can also intensively cover these markets. According to Joling, three employees were sent to New York and eventually a trader from every desk should be transferred to this city. An important aspect of these departures is the diversity in character the company intends to send in order to have a balanced team. Joling remarks that he also wanted to work in New York, but they probably needed him more in Amsterdam. The language policy of the company concentrates on English; however, Dutch is being spoken in Amsterdam. Since the company has grown beyond any expectation, the usual ‘learn-at-desk’ strategy is being replaced by a standardised education of employees. Joling is one of those involved with this education and spends a few hours a week on this job. Flow Traders is continuously searching for new traders and developers and prefers young talent, since they listen well and think creative. A good applicant can be recognised by his drive to succeed, his analytical skills and his decisiveness. Besides that, he can handle with stress and can control his emotions. A competitive spirit and love for “the game of trading” are recommended characteristics, too. Joling confesses: “I cannot stand losing a game, except for losing because of an acceptable cause.” An applicant for the company takes part in a psychological test and a calculating exam. After a few meetings with other traders, he can get his first certificate in less than a month. The first months are mainly focused on practical knowledge. Everyone learns to trade on German markets first and eventually even on various international markets. There are a lot of professions represented in the company, like mathematics, economics and information technology. The Atmosphere The atmosphere at the desks depends on the markets. Usually everyone is focusing on his quotes and communicating with others. Headphones are not used, since overhearing discussions makes you aware of the activity of others. But sometimes markets can be very turbulent and the atmosphere reacts on this directly, using a red button in the middle of the hall is the most drastic action. Because of some serious decisions, all employees are very direct to each other and point at mistakes without hesitation. Unfortunately, some emotional applicants cannot take the pressure and the directness. When you are not trading, you make a chat with colleagues at the bar in the office 14 Nekst 1 - November 2009 N e w Yo r k S t o c k E x c h a n g e or play a game in the arcade room. Furthermore, all employees may join the company trips to (for instance) a lake, a ski resort, Roland Garros and Milan. Joling enjoys the informal time with his colleagues. “A regular day at work begins with analysing the results and checking the positions of the previous day for one hour. Thereafter, I enter the market as a market maker. I offer as well as buy products on the market. I aim for the best ‘quotes’ and search for maximal spreads. Trading takes about eighty per cent of my time. The rest of the day, I am looking for new arbitrages, better hedges, analysing historical data, etcetera. Furthermore, keeping an eye on my positions is essential, because of the shifting markets.” Besides all of this, he is also responsible for the training of new employees, as stated below. After a drink in the bar, he usually leaves the office at about seven o‘clock. In his spare time, Joling plays hockey and likes to read the newspapers. “If you do not keep up, you will fall behind.” He also studies some mathematics every now and then. Up till now, he enjoys his work at Flow Traders and seldom takes a day off. The Trading Process The stereotype view of the stock market as an open hall is already outdated in Europe. Financial products are nowadays traded via digital networks. Joling never sees who he is trading with, because of this anonymity. In America on the other hand, a merchant is present on the stock market and he has to be called to make a trade. Since the communication with Europe is relatively slow, the new office in New York will take over the trading process. The stock market is not the only place where Flow Traders is present. Several sales traders are responsible for maintaining contact with partners and trying to buy obligations and private equity. The division of tasks among traders is mainly based on personal interests and on the basis of required activity on a segment of the market. The office in Amsterdam consists of seven desks in total: each with their own specialisation. An average trader switches desks a few times a year. This also holds for Joling, who switched almost five times in three years. In these years, he learned techniques like pair-trading and index-trading. Pair-trading is based on the fact that two products with almost the same characteristics can be used to trade with minimal risk. Index-trading is the technique of trading portfolios that are slightly different from an index, like the AEX, with the index itself. Since Flow Traders is not the only company in its kind, competitors are counteracting the profit or “spread” that can be made on certain transactions. The size of the arbitrage thus decreases. However, Joling explains: “Whenever the spread is low, a large profit can be made by increasing the volume. More risky products are made with a substantial lower volume, but yield a higher spread.” Because of the complexity of the financial markets, Joling reflects on arbitrage-trading as a sustainable profession. “If you are able to keep the overview and be quick, you can outperform the other traders and make a nice profit.” A good trader is always the first one to sell or buy a product at an optimal price at an optimal time.“A trader needs to be agile, clever and decisive.” The reason will be obvious: seconds matter in the world of trading. In order to be able to achieve this agility, Flow Traders maintains a team of developers and information technologists of about thirty experts. “This office contains a lot of financial software and a very quick connection to the Internet.” Next to being quick, you should also act wisely. In case of a loss, you ought to be able to explain your choices on rational grounds. The chief, also called the head of trading, can check their transactions anytime. Working at Flow Traders After talking about the credit crunch and the nice profit this meant for Flow Traders, Joling assured us that you should not worry about your future here. The structure of the company is flat and everyone gets rewarded for his achievements. Therefore, setting up his own trading company is not Joling’s ambition. According to him, you need software, partners and money. “These times are too rough for a small company; even banks are having serious problems with setting up trading projects.” Therefore, Joling is very proud of the achievements of Flow Traders:“It is always fun to be on the winning team.” | Text by: Frans Fonville Nekst 1 - November 2009 15 23 5 9 21 26 5 7 19 11 1 25 4 8 12 3 17 20 3 1 4 26 22 5 2 17 6 9 10 7 15 5 13 7 13 6 8 9 1 18 5 14 17 5 16 7 16 7 9 10 23 6 26 1 18 26 9 11 10 9 24 5 21 9 11 Can you look beyond the figures? 6 15 5 18 4 “We are looking for Junior Traders”. Did you crack the code fast enough? 19 3 15 If so, you might be the new colleague we are looking for. 26 9 2 5 Who we are? We’re a dynamic team of 5 18 21 11 4 2 1 18 traders, IT specialists, and professionals. Who are the best at what we do. 15 6 12 15 15 11 9 14 7 7 26 2 14 17 5 16 7 17 15 17 4 13 26 8 21 19 2 4 6 15 18 26 23 7 15 4 26 3 12 18 6 17 2 11 22 We’re peer - recognized as Europe’s leading ETF market maker, trading on- and off-screen all day to provide the prices on which Investors trade. We train our traders in-house and use custom-built technology, which means our successes are a joint effort from which everyone can profit. Our culture? Work hard and play harder. We offer a performance based incentive 5 7 19 11 1 25 4 8 12 scheme, training opportunities, luxury lifestyle perks, and an open collegial 1 18 10 21 14 9 15 18 7 environment. In addition, we offer the opportunity to work overseas. 4 16 8 6 4 12 1 5 9 Interested? Send your application (CV 13 7 22 20 1 3 1 4 26 including grades and motivation letter) to jobs@flowtraders.com. For more 26 9 11 5 10 I nt r oduction activity During the TIK-week, I was just walking around with some study mates at the information market at Tilburg 4 9 M eetin g new pe o ple and l o t s of fun 23 21 11 4 information and In-house days (only at Amsterdam headquarters) contact 7 13 6 8 5 5 17 21 7 25 20 18 1 4 5 18 19 8 5 26 8 21 3 10 12 20 9 Recruitment +31 (0)20 799 6799 or check out www.flowtraders.com. University. Suddenly, the new board of Asset | Econometrics interrupted our lovely conversation. They asked us if we wanted to subscribe for the introduction activity. Of course we wanted to subscribe! So after I checked at home if I did not have any other activities that afternoon, I subscribed myself for the activity. We were going to play some games of the famous television programme ‘Who is the Mole?’. After these games, we would have a barbecue. Who is the Mole? A few weeks later, it finally was Wednesday 2 September. At 12.45 hours, we entered lecture room DZ1, where we gathered to have a delicious lunch. When we registered, we heard in which team we were divided. After the lunch, an envelope was given to each of us. A paper inside this envelope told us whether we were the mole or not. After this quite funny game, we went to the Rope game. There we heard that the number we had to choose before, stands for the number of metres rope we received in order to measure a very long distance between two bottles of beer. So the number two was not a really good choice. After we measured, for what seemed to take hours, we found a distance of approximately 360 metres. For the ones who never heard about the game ‘Who is the Mole?’, I will give a short explanation of the game: there is a group of people who have to play several games to earn money. But one of them has to prevent earning money remaining undiscovered: this person is the mole. Of course, nobody knows who the mole is except for the mole himself. The goal of the game is to find out who the mole is. In our version of this game, it was not about the money. Each group (of approximately five people) contained one mole. We had to play several games and earn as many points as possible. But of course, the mole had to prevent this. Now it was time for us to go to the Signal game. We had to signal the word ‘barbecue’ to each other, using flags, a flashlight and drawing. But because I already messed it up by using the flags in the wrong way, this game was a huge disaster for our team. After a nice break, we went to the Film game. There we heard that we had to make a film that had to be as funny as possible. Unfortunately, I had to go to a tutorial of the course ‘Proofs and Techniques’, so I could not participate in this game (lucky me). Because of this tutorial, I also missed the last two games (the Car and Beer game), but I heard those games were also great! After the games, we went back to the lecture room where this exciting afternoon started. We played the final game, in which we had to answer fifteen questions one by one. But if somebody of your team gave a wrong answer, another member of the team had to start all over again. Finally we had to fill in a form which consisted of questions about the mole. Let me return to the moment of receiving the envelope. At this moment, we all knew if we were the mole or not. After this exciting moment, a member of the board of Asset | Econometrics came to each group to ask if they wanted to pick a number between 1 and 20.They did not tell us for what purpose.We chose the number two. Later on, we found out that this number was not a very good choice… Games At 13.50 hours the first games started. We started with the Ski game. That is a game in which you have to walk with your whole team simultaneously, with your shoes all in the same wooden skis. After we walked the (instinctively) very long distance with the skis, we had to walk back the same distance, but now all in a ‘hamster-thing’: you walk after each other in a big plastic ‘wheel’ and the last one ‘gives’ this plastic thing to the first one, and so on. Name: Geert Alkema Age: 16 Begin studies: 2009 Barbecue All these games made us feel very hungry, so it was time for the barbecue! We walked to the sports centre of the university in order to have a delicious barbecue. We chatted for quite a long time. After everyone ate as many hamburgers as possible, the new board of Asset | Econometrics revealed which team and which mole were the best. The only thing left that made this beautiful evening complete, was watching the films made during the Film game. Unfortunately, our film was judged being worst (we still do not know why), but that could not give us a bad feeling about this great introduction activity! | Nekst 1 - November 2009 17 ack t o s ch o o l A new b o a r d column G mm and d r ink The famous Dutch poet Herman Gorter (1864-1927) once wrote “Een nieuwe lente, een nieuw geluid”.1 On 8 September 2009, the General Members Meeting (GMM) of Asset | Econometrics and of course the Not only did he make himself immortal with this sentence - every high school graduate should know this drink afterwards took place. Even though the desired quorum had not always been reached during a GMM, sentence by heart - that starts off the epic poem “Mei”,2 but he also disqualified himself as an academic. For this time the turnout was quite large. People of all years had come to The Gallery to attend the meeting, in academia, everyone knows that “A new September, a new sound” is more accurate. including a few students from abroad and several freshmen! For it is September that brings many a new sound to the campus of Tilburg University, when hordes of new students arrive and fill the air with familiar phrases. 3 Phrases like: “I did not quite get what the teacher was saying”, which are often responded to by a fellow student with the comforting words “Really? I thought it was rather easy.” The latter student is bound to receive a 2 (out of 10) on the next exam. 4 And vice versa, the university is new to them. 5 Name: Gerwald van Gulick Position: PhD Candidate In fact, the board of the Faculty of Economics and Business Administration thought it was all too new for them. 6 What these students really need, is something to absorb the shock. Something to reassure them that and make them forget they are now enrolled in a university. Hence, in their infinite wisdom, the board has decided that from now on, we are no longer a faculty, but rather, we are all part of the Tilburg School of Economics and Management ( TISEM). So, back to School it is. The rationale is that the term School will reinforce the international image of the university. 7 Apparently, an international image is a goal in itself. I suspect that ‘international image’ is suspected to be a proxy for ‘quality’ and it certainly pays off to maximise ones proxies, right? 8 It might work for international students. But I think Dutch students might associate School with something else than a university with a strong international image: high school. Let us hope this name change does not come with the typical High School mentality. completed the MPhil programme. Instead, the title Master of Science (MSc) is to be used. Coincidentally, MPhil is an internationally renowned title and in a much higher standing than MSc. However, when asked about this by some angry students, 9 TISEM responded that the value of the title is not in its name, but rather in the excellent programme itself, that remains unchanged. What is in a name? Several people had been looking forward to the GMM and they wondered how well Asset | Econometrics had coped with the credit crunch in the past year and if there would still be sufficient funds for free barrels of beer. Furthermore, this day was even more exciting for some of us, as today the vote for a new board would take place. The attentive reader may have noticed that these two reasonings conflict in the worst of ways: the name change to School is worth spending millions on, but the name change to MPhil is not worth lobbying for. In both cases, the impact of the name change is largely the international image: how much more could they be alike? And the funny thing is that I received news about this (from TISEM) in the same week. At the start of the meeting Tess Beukers was asked to be voting commissioner: a small task during a regular meeting. However, since a lot of people joined the meeting later, the amount of voters present had to be corrected regularly. This fact combined with some confusing voting rounds, made the counting of the votes worth mentioning. After “Mei”, Herman Gorter denounced the poetic principles he had used and started on more politically motivated work. I am starting to wonder if maybe this qualifies Gorter as an academic after all. | 1. This translates into “a new spring, a new sound”. After the budget and the realisation of the past academic year had been reviewed and everything seemed to have turned out quite well, the candidate board members got the chance to present themselves. After Harold van Heijst, Marleen Balvert, Anouk Rennen, Whitney Pattinaja and Stèphanie van Breda had declared which tasks they wished to fulfil in the upcoming year – some of them seemed to be slightly more nervous than others - the vote for the appointment of the candidate board was unanimous and the board change took place. Now the plans and budget for the upcoming year were presented by the new board. Furthermore, a new Finance Monitoring Committee (FMC) was needed. Besides the appointment of Stefan Damen and Kay Mennens for this committee, two members present at the GMM were needed for this committee. However, since Paul Peters wished to be re-elected and both Bart Kruize and Thomas Geelen boldly volunteered, it was decided that not two, but three members would be chosen for the FMC. After everything was approved of as expected, the meeting closed and everyone got the opportunity to congratulate the new board members. Now that all formalities had been taken care of, it was time to head for the drink in Café Qwibus. Apparently the start of the drink was scheduled before the end of the GMM, so when all people from the meeting arrived, the place was instantly crowded. The long time of listening must have made everyone very thirsty as the first barrel of beer ran out in a blink of the eye. The former board members were thanked for their efforts during the past year and were given a small gift to remind the good times. Afterwards, the former board and the new board were going to compete in a beer race. The new board members battled fiercely, but the former board did not lose control and was victorious. Then something peculiar happened: a team of freshmen challenged the former board members for another beer race. Of course there was no doubt in my mind about who would win this race, but I decided to watch the match anyway. After a good start the former board took the lead, but suddenly they slowed down a little and the freshmen managed to finish their beers first! All in all it had been an interesting GMM and a nice drink. I am already looking forward to the next drinks and meetings. | Text by: Dennis Jaheruddin 2. “May”. 3. It is astounding how familiar a ‘new’ sound can be. 4. Incidentally, the former student most likely receives a 2 too. That is econometrics for you. 5. Of course, there are students at the university who continue what they have been doing in the last year of high school: orientating on their next studies. 6. Econometrics and Operations Research belongs to this faculty. 7. They print this themselves in their newsletter regarding the name change. The name change mostly seems to bother lecturers. However, there has been another name change about and this time it is the students that are fussed. It turned out that the university was unable to convince politicians that the title Master of Philosophy (MPhil) should be rewarded to students who 8. If you consider ‘yes’ as the proper answer to this question, you should consider picking the master ‘Marketing Research’. 9. These students were promised the MPhil title and claimed they had based their decision to start their studies in Tilburg on this promise. 18 Who votes for? Nekst 1 - November 2009 Nekst 1 - November 2009 19 e r capita p r en u cle o l u s T r iangel The main goal of cooperative game theory is to analyse fair allocations of joint benefits obtained by means of cooperation. In the literature there exist several solution concepts, each concept with its own properties. In this article we discuss several properties of a solution concept that has been introduced in 1970 by Grotte1, but is barely studied: the per capita prenucleolus. This research is part of joint work with Javier Arin and Hans Reijnierse. Name: John Kleppe Position: Teacher Interaction between decision makers (players) can lead to cooperative or competitive behaviour. Game theory is the mathematical tool to study such behaviour. An important branch of game theory is cooperative game theory, which studies situations where players can cooperate in order to generate benefits (or reduce costs). Its main focus is on the study of fair allocations of the joint benefits by means of cooperation. The most commonly used model in this type of situations is that of transferable utility games. In a transferable utility (or TU) game each coalition of players is associated with a certain worth, which corresponds to the benefits this coalition can obtain without help from players outside the coalition. These coalitional worths can be used as a reference point for dividing the worth of the grand coalition (the coalition of all players). Formally, a TU-game is defined by , with the finite set of players and the characteristic function assigning to every coalition of players a worth . Once a TU-game is defined the question is how to use this information to obtain a fair allocation. There are several solution concepts in the literature. The preimputation set is the set of efficient allocations, which means that it is the set of allocations for which the worth of the grand coalition is (exactly) divided among the players of the game. A solution concept associates with each TU-game a subset (possibly a single element) of the preimputation set, hence for all . The most fundamental solution concept for TUgames is the core (Gillies (1959) 2), which consists of all efficient allocations that satisfy stability. An allocation is stable if no coalition of players is better off by separating from the grand coalition and obtaining its coalitional worth. Hence, if in a three-player TU-game the coalition of players 1 and 2 has a worth of 10, any stable allocation gives at least 10 to players 1 and 2 together. The core of a TU-game generally consists of more than one element. There are also several single-valued solution concepts that associate with each TU-game exactly one allocation, i.e., for all . One of the most important and studied single-valued solution concepts for TU-games is the prenucleolus (cf. Schmeidler (1969) 3). The prenucleolus is the unique element in the preimputation set for which the maximal coalitional objection to it is minimised. Related to the prenucleolus is the per capita prenucleolus. The per capita prenucleolus is the unique element in the preimputation set for which the maximal objection per player of a coalition to it is minimised. In short, for the prenucleolus all coalitions are equally important, while for the per capita prenucleolus all players of all coalitions are equally important. Example To illustrate a difference between the prenucleolus and the per capita prenucleolus we consider the following ten-player TUgame . Let = {1, . . . , 10}, = {1, 2} and . The coalitional worths are given by Hence, players 1 and 2 can obtain 18 in any coalition (unequal to ) of which they are both a member, while players 3 to 10 can obtain 72 in any coalition (unequal to )) of 20 Nekst 1 - November 2009 which they are all a member. Therefore, the only interesting coalitions of this game are and , in which the average payoff is 9, and , in which the average payoff is 10. We consider solution concepts that are both a core selector and satisfy anonymity. Let denote the payoff to player . A solution concept is a core selector if it selects for each TU-game a subset of the core, whenever the core is non-empty, i.e., if . For this game this implies that , and . A solution concept satisfies anonymity if the names of the players do not influence their payoff. Consequently, all benefits of must be equally distributed among the players in . Given these two requirements the only question that remains is how to divide the additional benefits of obtained by full cooperation among the players of coalitions and . Both the prenucleolus and the per capita prenucleolus satisfy core selection and anonymity. The idea behind the prenucleolus is that (the complaint of ) every coalition is equally important. Consequently, since the cooperation of two disjoint coalitions ( and ) is needed to obtain the additional benefits of 10, both coalitions receive an equal amount of these benefits. However, due to the fact that coalition contains more players than , each player in gets less than each player in . The prenucleolus of this game, , is given by if and if . The idea behind the per capita prenucleolus is that (the complaint of ) each player in every coalition is equally important. Hence, since all players are needed to form the grand coalition and all players receive 9 if and do not cooperate (but act as two separate coalitions), the additional benefits of 10 are equally divided into 10 parts such that each player receives 1. Therefore, the per capita prenucleolus of this game, , is given by for all . Based on this example one might have a preference for the prenucleolus or the per capita prenucleolus. In any case, it seems enough reason to investigate the per capita prenucleolus in more detail, and in particular discuss the differences with the prenucleolus. It turns out that the per capita prenucleolus satisfies, next to core selection and anonymity, a number of interesting properties of which we discuss a few in this article. First of all, it follows from the definition (since the per capita prenucleolus is an element of the preimputation set) that the per capita prenuceolus satisfies efficiency. Secondly, the per capita prenucleolus is single-valued, which means that each TU-game has exactly one per capita prenucleolus. A third important property that is satisfied by the per capita prenucleolus is covariance. We use the next example to illustrate this property. Example Consider the three-player game depicted below. {1} {2} {3} {1,2} {1,3} {2,3} 0 0 0 5 5 10 20 The per capita prenucleolus of this game is given by = . Also consider the three-player game depicted below. {1} {2} {3} {1,2} {1,3} {2,3} 1 1 2 12 13 23 44 The games and may look completely different on first sight, they are however closely related, as = for all , with = 2 and = (1,1,2). Hence, TU-game can be transformed into by rescaling of monetary units and giving a fixed amount to some players. Since and are related in a specific way it would make no sense for a solution concept to associate the two games with two unrelated sets of solutions. The property covariance requires that this is indeed not the case and that a single-valued solution concept follows the same utility transformation as the game. Since the per capita prenucleolus satisfies covariance the per capita prenucleolus of is given by = + = + = . Another desirable property for a solution concept is monotonicity, which requires that if one of the coalitional worths changes, the payoffs of the members of this coalition change in the same direction. The most well-known form of monotonicity is coalitional monotonicity. Let and be two TU-games and let be a single-valued solution concept. Then is coalitionally monotonic if (whenever) for some and for all , then for all . This property states that if the worth of only one coalition increases all its members should be (weakly) better off. Young (1985) 4 shows that a solution concept cannot be both coalitionally monotonic and a core selector. Therefore, both the prenucleolus and the per capita prenucleolus are not coalitionally monotonic. However, this is not the end of the story, as the next example illustrates two other monotonicity concepts. Example Consider the four-player TU-game depicted below, where represents any single-player (twoplayer) coalition. Nekst 1 - November 2009 21 Wie de top wil bereiken heeft meer nodig dan talent. Met talent kan de wereld aan je voeten liggen. Maar talent alleen is nooit genoeg om de top te bereiken. Daarom is de Rabobank al jaren sponsor van toptalenten uit de sportwereld. Want wij geloven dat talent gestuurd moet worden, tot bloei moet komen, om vervolgens met de beste begeleiding het hoogste niveau te halen. Binnen de bank doen we dat niet anders. Talent is bijzonder. Het moet gekoesterd en ontwikkeld worden. Alleen op die manier kan jouw talent uitgroeien tot een succesvolle carrière. Spreekt onze zakelijke en menselijke benadering ook jou aan? Groei dan mee met een bank die nationaal en internationaal flink aan de weg timmert. Wil je meer weten over de Rabobank als werkgever en over de vacatures die we op dit moment hebben? Kijk dan op www.rabobank.nl/werken. Carrière maken bij dé favoriete werkgever in Nederland. Het is tijd voor de Rabobank. 0 {1,2,3} {1,2,4} {1,3,4} {2,3,4} 0 0 10 10 10 10 This game could represent a situation in which player 4 owns a piece of machinery that needs to be handled by three players (player 4 and two others) to produce something with a benefit of 10. Consequently, any coalition with less than three players obtains no benefits, but also any coalition without player 4 gets nothing, in particular coalition {1, 2, 3}. Since player 4 is vital to obtain the worth of 10 the core of this game is equal to (0, 0, 0, 10). Therefore, both the prenucleolus and the per capita prenucleolus are equal to this allocation. {2} or {3}) is just as important as the complaint of the three-player coalitions ({1, 2, 4}, {1, 3, 4} and {2, 3, 4}). This is not the case for the per capita prenucleolus where the complaint of the three-player coalitions is three times as important as that of a singleplayer coalition. Therefore, according to the per capita prenucleolus each player gets the payoff of and the additional value of 1 is equally divided over all players. Hence, the per capita prenucleolus is given by = . To generalise this example, the per capita prenucleolus satisfies strong aggregate monotonicity (and therefore also aggregate monotonicity), a property not satisfied by the prenucleolus. Let and be two TUIn the above situation it holds that if games and let be a single-valued three players (including player 4) are solution concept. Then satisfies working the machine, the next player aggregate monotonicity if (whenever) adds no benefits. Let us now suppose for all and that this player can be of some use , then and is able to add a value of 1. Then for all Furthermore, satisfies all coalitional worths remain the same, strong aggregate monotonicity if except for the worth of the grand (whenever) for all coalition as it increases from 10 to 11. and , then This gives the TU-game . = for all . Aggregate monotonicity has the following interpretation. If {1,2,3} {1,2,4} {1,3,4} {2,3,4} the worth of the grand coalition is 0 0 0 10 10 10 11 increased, while at the same time the worth of any proper subcoalition remains unchanged, then everybody Note that player 4 is still in full control should benefit from the increase of of the machine that gives a benefit of . Moreover, strong aggregate 10. Nevertheless, the prenucleolus of monotonicity requires that everyone is given by = , should benefit by receiving an equal which means that player 4 gets less in share of the additional benefits. this setup. Hence, although the worth of the grand coalition increases while The per capita prenucleolus also all others remain the same, the payoff satisfies several other interesting to player 4 gets lower. The reason is properties.For an overview and more that the complaint over the allocation results of this concept and the related of each single-player coalition ({1}, concepts of the per capita nucleolus, the per capita prekernel and the per capita kernel, I refer to Kleppe (2009) 5. | Reference list 1. Grotte, J. (1970). Computation of and Observations on the Nucleolus, the Normalised Nucleolus and the Central Games. PhD thesis, Cornell University, Ithaca. 2. Gillies, D. (1959). Solutions to general non-zero-sum games. Contributions to the Theory of Games, 4, 541-553. 3. Schmeidler, D. (1969). The nucleolus of a characteristic function game. SIAM Journal of Applied Mathematics, 17, 1163-1170. 4. Young, H. (1985). Monotonic solutions of cooperative games. International Journal of Game Theory, 14, 65-72. 5. Kleppe, J. (2009). Modelling Interactive Behaviour, and Solution Concepts. PhD thesis, Tilburg University, Tilburg. www.rabobank.nl/werken Nekst 1 - November 2009 23 y hemin g wa y E xchange r epo r t On a Monday in December, Mr Schumacher had an unusual announcement at the beginning of the lecture of the course Financial Models. “I would like to have your attention for this internship offered by CAAM Paris. Tilburg Centre of Finance arranged a possibility to write your Master’s thesis in this lovely city. In my opinion there are worse places to stay for six months.” Name: Bas Hamers Age: 23 Begin studies: 2004 Internship At first it was not clear to me at which company the internship would be, but soon I found out that CAAM is an abbreviation for Crédit Agricole Asset Management. I was already interested from the moment Mr Schumacher switched from the announcement to the five different derivations of the Black-Scholes equation. As soon as possible I sent an email to the capital of France to indicate that I was very interested in the internship and that I would like to have some more information. The Fixed Income, Foreign Exchange (FX) and Volatility Strategy team of CAAM was looking for an intern starting in January, while my Master’s courses would at least last until April. Chapter Paris closed, one would say. With the fresh start of a new year, I received a dose of fresh luck. I passed Financial Models and on top of that, the people in Paris questioned whether I was still interested in the internship. After a first interview by phone at the end of January and a second interview in Paris, I got a confirmation that I was the lucky one, who could prepare himself for a unique stay in the capital of France. On Easter Monday, the major part of my belongings was transported to Paris. I found a ‘studio meublé’ (actually a double room apartment) after two trips and six visits to possible accommodations. But, as I would only stay in Paris for half a year, I dreamed of a particular kind of building to live in for that period. A so-called ‘Haussman’ building with the familiar stone and wooden shutters in front of the windows, which is typical for Paris. And that is what I found for a rent that was somewhat more than four times my rent in Tilburg. But to be honest, it is impossible in Tilburg to live within a hundred metres from the Eiffel Tower. My apartment was situated perfectly. The only disadvantages were the lack of an elevator and the daily slalom through the enormous amount of tourists when I returned after a working day. But the former disadvantage became an - call it a Cruijffian - advantage: I will never forget my bike keys anymore before I close the door behind me. Six floors up and down again for a pair of keys is a good example of operant conditioning. Paris In Paris, I was a member of the Fixed Income, FX and Volatility Strategy team that provides parties inside and outside CAAM with its views on, not surprisingly, fixed income, foreign exchange and volatility. On the other hand, the team members work on studies concerning new strategies within these market segments, work that often results in academic papers. The research for my Master’s thesis is a clear example of the latter objective. The team, in line with the Strategy department, consisted T h e E i f f e l To w e r w i t h f i r e w o r k s 24 Nekst 1 - November 2009 To u r d e F r a n c e of many nationalities. It was great to work with two French, one Togolese, one Italian and a Lebanese colleague. Despite these different backgrounds, all the cultures adapted well to the French one. This means that you should enter the office at nine o’clock or later, start with a strong coffee together with your colleagues, take a big break in the afternoon to enjoy a three course dinner and work late until at least 18.30 hours. I also changed my habits quickly, although I always started to work at 08.30 hours in the morning. The first half an hour of each weekday was probably the quietest moment I had in Paris, a city that starts rushing early in the morning and calms down when every normal person already sleeps. But strangely, Paris is apparently built in such a way that you can escape the fuss of (slow moving) tourists, never stopping traffic and hordes of commuting people bursting out of metro stations. When you deviate from the famous avenues or boulevards, most of the time you will find an oasis of rest without annoying tourists or traffic that always wants to hit you. Of course you can bump into one of the several parks Paris contains. My most visited park was ‘Champ de Mars’ next to the Eiffel Tower, because it was the closest to my home. Experiences My visitors loved to have breakfast in the shade of the Eiffel Tower and apparently my favourite bakery had the best croissants of Paris 1. Visitors were a main theme during my period abroad. Of the 26 weekends I was in Paris, fourteen were filled with people visiting me and the city of lights. It is really nice to show people around in Paris during day time; to go out at night; to wake up early again, so your visitor does not spend his time in Paris sleeping; and, as a result, to feel wasted on Mondays. But what remains are nice memories and experiences like visiting rugby and football matches; the arrival of ‘Le Tour de France’; being refused at four clubs throughout Paris in one night; and acting like ‘bourgeoisie’ at the biggest horse racing event in the whole world. One particular experience is worth more than just mentioning. It is a bar where the prices of the drinks fluctuate depending on the demand as on a stock exchange. When you ask however if it is possible to buy derivatives on certain drinks, this results in a look from the bar lady who thinks you had enough. But remember: not everyone studied Econometrics! Prices are, fluctuating or not, high in Paris. As a universal bench mark, at least students might prefer it to the Big Mac Index, the price of beer can indicate accurately how expensive a city is. In Tilburg one speaks of a scandal if bars ask two euros or more for a beer. In Paris you should not be surprised when they ask you to pay five. Therefore, one particular bar, very close to the Notre Dame in the very centre of the city, became my favourite bar. They serve pints until 22.00 hours for a reasonable price of three euros and fifty centimes. But please, do not get a wrong image of me being in this bar every night. On the contrary, a Parisian friend of mine asked me to join him at the semi-marathon of Lyon. We had six weeks to train for this event of torture as training schedules advised to train at least twelve weeks for a semi-marathon. But we made it in a reasonable time and besides that, we enjoyed the lovely city of Lyon for a weekend. Of course we went there by TGV and this transport system is the last topic I want to brag about. It is great! The TGV brings you in a few hours from the North of France to the South without traffic jams and with a dining car (like the Netherlands Railways used to have). You can even borrow a DVD player to watch one of the infinitely many DVDs they have aboard. And I have to admit, there could be a delay when you use the TGV to travel. But what is ten minutes if you realise that you only spent two hours - and ten minutes of delay - to travel more than four hundred kilometres without being stressed? So, dear reader, if Mr Schumacher announces an internship in Paris offered by CAAM during one of his lectures, I would say: go for it! As Hemingway told a friend in 1950: “If you are lucky enough to have lived in Paris as a young man, then wherever you go for the rest of your life, it stays with you, for Paris is a moveable feast.” | 1. It should be noted however that the sample size of bakeries that were tested was not representatively large. Nekst 1 - November 2009 25 SS E T all o v e r the place living in lodges It was a chilly Monday evening when, cycling past a small park in the middle of nowhere, Tess and I stumbled upon a cosy little cottage. Cold and hungry, we decided to try our chances and knocked on the wooden door, to find it opened by a friendly looking youngster, who introduced himself as Mathijs. Seeing our frozen ears, he warmly invited us in, as the smell of a freshly cooked meal wafted from inside. Unfortunately, that was not how it happened, though it was quite a chilly evening and we did cycle past a small park. Coincidentally, this small park is where Mathijs lives, along with five house mates, most of whom happen to be active members of Asset. It also just so happens that another econometrics student lives here: Kamiel, first year, who agreed to have his residence invaded by two nosy reporters. Name: Mathijs Jansen Begin studies: 2004 Age: 23 Address: Wilhelminapark 44 Room surface: 12 m 2 Monthly rent: 190 euros Small but cosy We are led up the stairs to the actual ‘house’, where the smell of food indeed drifts into our nose, and where we find some of Mathijs’ house mates: Paul and Kamiel. Kamiel is busily preparing tonight’s meal, whereas Paul is making himself useful by ‘assisting’, or: stirring. Shortly after we arrived, another house mate enters: Janneke. As the three of them do the cooking Mathijs leads us to his room. “I have lived here from the beginning of my studies, back in 2004. Although the room is not that big or special, I have never considered moving to another one, as my house mates are nice. Plus I have my own balcony,” is what he says, while gesturing at the window. “When another house mate, Ewout, moves out, Paul will get his room, which is a lot bigger than the one he lives in nowadays. New house mates start off in the smallest room and move up as others go. I do not have any plans of moving out of my room though, as Paul’s room is not bigger than this one.” We note the volleyball lying on the floor and are subtly reprimanded. “I play beach volleyball, which I started this year, and I have played volleyball since I was only a child. That one is a beach volleyball though.” We return to the kitchen, where Kamiel shrugs before leading us to his room, which is right next door. “As you can tell there is not that much space,” he says when Tess accidentally knocks the door against his desk, while trying to open it further, “but it can fit all of my things, although all of my clothes are in baskets under my bed. This was the second room I applied for, and I was quite happy when I found out they had accepted me. When Ewout moves out (we start wondering who this might be), I may get a bigger room, but I do not mind having this one. Besides, I go home every weekend to play football there.” Next to playing football Kamiel enjoys running and cycling, though the latter is only done when the weather is good. Back in the kitchen all house mates agree that, although the neighbourhood is not ideal, it does not bother them and it is quite wellsituated: not too far from both the city centre and the university. Cooking and cleaning While we enjoy our pasta, Mathijs explains their system of cooking and cleaning. “We eat together most of the time. There is a schedule on the door where you can ‘sign up’ for dinner, so that we know how many people will join.” As for who is supposed to cook, that does not become very clear. Kamiel: “Today is actually the first time I had to cook, I usually join them for dinner.” They cook pasta most days, but it is not their favourite dish. Actually, Mathijs once prepared a vegetarian meal, which everyone thought was the most delicious dish they had ever had. Paul adds that it would have been better if there had been some meat, which he had added himself afterwards. Suddenly Paul raises his voice and both Mathijs and he look at Janneke slyly. “Say Janneke, there is something we ought to ask you. How come our bathroom was not cleaned last Monday?” Janneke looks up a bit disdained and explains to their two quite confused guests: “We have a cleaning schedule: every week someone has to clean a part of the house, such as the kitchen or the bathroom. As I was busy all weekend and did not have the time and spirit to clean the bathroom this Monday, I postponed it till Tuesday. I do not care about the fine, because 26 Nekst 1 - November 2009 I have a good excuse.” When one of the house mates fails to do his or her cleaning before Tuesday, he or she has to pay a fine of five euros to the others, which comes down to paying one euro of rent less for the others. It does not happen very often that someone does not finish in time, so the system works fine. Ewout So who is Ewout? “Ewout is one of our house mates, who occupies the biggest room here, the original living room. Unfortunately Ewout worked for the last two years and is either too lazy to find another room, despite our urging him, or he says he cannot, because he is not sure whether he likes his work and that it would be a bad idea to move right now. Sometimes we pester him about it, and every now and then we cross the line and he locks himself in his room, angry, but the next time we give it another try. Paul made a deal with him, in order to have him move out before January, but something tells us that this is not going to work. He will not be here tonight though.” Compliment sandwich Suddenly another roommate pops in: Atse. He just came back from rowing at TSR Vidar. The conversation turns to house mates. “The Mathijs, Kamiel and their house mates best thing about Mathijs? He has this habit of listening to… what is it called again? Oh, heavy metal. And somehow you cannot listen to that without turning up the volume, and not just a notch.” Kamiel seems to be more quiet, spending most of his days inside his room, although his house mates claim he does not spend his time studying. “I do not dislike my course, but it is quite tough.” He never asks Mathijs for help either. And a ‘bad’ habit of Kamiel: “He keeps calling university ‘school’ and other things like that, we really do have to help him get rid of that habit. We have a strict policy of separating ‘school’ and university here.” An idea pops up: “Oh, perhaps we should do one of those things where you have to write down two good and bad traits of your house mates.” Mathijs: “Like a ‘compliment sandwich’ you mean?” Atse demonstrates the compliment sandwich to us, which is like stuffing a mean comment between two compliments, literally. “Hey Kamiel, your hair looks nice today! You cannot cook to save your life, but you are wearing a very nice sweater.” Then again, it is the first time he is cooking. Although they rarely go out together, they do have at least one thing in common. “We all love South Park!” is what they shout in common, ignoring Kamiel’s disapproving headshaking. And then the random quotes from this popular TV series start flying, most of which are not quite appropriate enough to mention here. When asked about their favourite episode we cannot keep up with all the titles they name. As the clock nears nine Atse mentions that it is time for South Park and rushes off to his room. The other house mates look at us guiltily (except for Kamiel) and after we thanked them for the nice dinner, to which we hear some snorting (especially from Atse) we leave, to the now dark and still cold pavement. | Name: Kamiel van Langen Begin studies: 2009 Age: 18 Address: Wilhelminapark 44 Room surface: 9 m2 Monthly rent: 177 euros Text by: Fang Qi Wu Nekst 1 - November 2009 27 ga naar www.gaaan.nu S t r o o pwafel s and he r o e s H a r t van B r abantloop At 05:50 hours my alarm rings. I step out of my bed, but actually I am not awake yet. However, I know I have to get up and eat something right now. So I go downstairs to the kitchen where the cold does wake me up somewhat. Although I am not hungry I eat my breakfast and wake up my friend Annick. Half an hour later we are walking towards the university and ring at Tycho’s place. There we pick up the other heroes: Mathijs, Emy, Whitney, Dennis, Stefan, Frans, Tycho, Stan, Wilbert, Evelien, Marije, Inge, Harold and not to forget our super heroes: Marleen & Stèphanie. It was Saturday 26 September and we – members of Asset | Econometrics – were going to run the Hart van Brabantloop: a yearly relay of fifteen stages throughout Brabant.The heroes - including me and Annick - were the runners and the super heroes were our drivers of that day. My job was to run the first stage, which started at 07:30 hours. I was glad I woke up before six o’ clock in the morning, because right before the launch I started feeling very awake. Though it was early, the campus of Tilburg University was crowded with people, who were clapping and encouraging us: we were the first group of runners. The person, who was cycling with me, was Frans. He was supposed to guide me through the stage. I guess he did quite a good job. Yes, guessing, since I prefer running with (loud) music, so unfortunately I did not hear any of his stories. The only thing I noticed was that he lifted his finger saying that I only had one kilometre left to run (out of the 4.9 kilometres). A few seconds before 7:53 I finished my stage and my job of that day was done. As a reward I got a ‘stroopwafel’ (a kind of cookie), since I had been running the ‘stroopwafel’ stage. Mathijs took over and started his stage towards Loon op Zand. My stage was finished, but for now the fun part of the Hart van Brabantloop started: driving around small places I had never been before in order to find a ‘wisselpunt’ (the place where one runner is replaced by another) and encouraging runners during their last and first hundred metres. Due to a very precise schedule made by Harold and Whitney, we were never too late for the change of runners. Some of our heroes had to run for quite a while. The stages of Stefan, Tycho and Frans had a length of more than eleven kilometres. Some of our ladies even ran a male stage. One of them, Emy, managed to leave 79 (male) runners behind her and became 19th on her stage. That may be caused by the a u d i t ta x a dv i s o r y fact that the men did not mind running behind her. Whatever caused it, I want to say: well done, Emy! Our final runner Harold left 76 competitors behind and he ran from the Heuvel square in the city centre to Tilburg University in less than twenty minutes. If you want to see a list of all the times of our heroes, you can take a look at the website of Hart van Brabantloop: www.hartvanbrabantloop.nl. In total we ran more than 105 kilometres in 8 hours 55 minutes and 28 seconds. It is not as fast as the team of Mr Einmahl, but I still think we can be proud of this result! Our heroes and super heroes were rewarded with French fries in the sun. We had to wait for the party to get to know the winners of the relay. To keep us ‘quiet’ while we were waiting the organisation gave away some free barrels of beer. Although all of our heroes started the day very early, there was still enough energy for ‘polonaise’ (a traditional dance from Brabant) and ‘zakken’ (another Dutch dance style) on the music of Def Rhymz even after midnight. My conclusion: it was absolutely no punishment to join the Astrics team for the Hart van Brabantloop. So who wants to strengthen the team next year? | Name: Mirjam Groote Schaarsberg Age: 23 Start studies: 2003 Running at the Har t van Brabantloop Nekst 1 - November 2009 29 Board 2009-2010 lte r nati v e s t o ann u itie s p r actical r epo r t One out of every five households has some of their pension capital at APG (All Pension Group), so writing a Master’s thesis about pensions in the Netherlands at this company was a nice opportunity for me to peak a person derives a certain amount of utility from a given consumption path: into the kitchen of the Dutch pension sector. My research considered the optimality of the current Dutch pension system and the opportunities available to improve the system. Name: Kay Mennens Age: 23 Begin studies: 2004 Three pillars A Dutch employee can build up his pension in three pillars. The first pillar is the social security par t of the pension (AOW ), for which ever ybody in the Netherlands, who has worked in his life for some period of time, is eligible. The second pillar is home to the occupational pensions, where people automatically build up pension capital in a designated pension fund, depending on their profession. The third pillar holds the possibility for additional pension savings, for people who cannot use the second pillar, for example self employed individuals, or for those people, who have a pension gap. The three pillars all ser ve to provide the possibility to people to build up a sufficient pension, so they can have a financially healthy retirement. The product used for the pension wealth decumulation is similar: all three pillars use annuities to pay the pensions to the retirees. Annuities are products that pay out a constant amount of money to the client, conditional on the life of this client. Advantages of this product are that people are protected against the risk of living long and having a depleted bank account, as well as a beneficially mor tality credit, resulting from the insurance-like structure of the product. However, the way in which annuities compensate a retiree for inflation differs a lot among the three pillars. The first pillar pensions grow with inflation and the second pillar pensions do so if the financial status of the fund - measured by the coverage ratio - is good enough. In the third pillar, it is ver y hard to find these socalled real annuities and inflation risk is therefore hardly covered in this pillar. Differences in pension capital Differences among people with similar pension capital, but different pension buildups become apparent in this way. A self employed person builds up nominal capital, whereas a civil servant builds up mostly real capital. This reflects the need for the availability of real annuities in the third pillar, because my study has shown that the absence of these real annuities can lead to a welfare loss of approximately 15%. Furthermore, the use of annuities in pension decumulation can be questioned. From 1969 research, the conclusion was drawn that annuities are the best way to decumulate pension capital. However, this research did not take into account that people might want to leave a bequest to their children nor that they might want to protect themselves against sudden financial shocks during their retirement. An annuity stops paying whenever the retiree dies, so when all of his money was in that annuity, there is no money left for his heirs. Also, when a person depends entirely on annuity income, a sudden financial shock, for example a broken car, for which large expenses have to be made, cuts in the consumption of the retiree directly, whereas a person who has a buffer of cash on his bank account will be able to spread the effect of the shock over a number of periods. Alternatives to annuities These effects might increase the need for alternatives to annuities and my research tries to prove this by using a utility based comparison method. By using this method, it is possible to see what annuitizing strategy would be optimal for certain people, given certain preferences. In utility theory, we assume that, given certain parameter values, 32 Nekst 1 - November 2009 Where u(C) denotes the standard constant relative risk aversion function and v(B) denotes a similar notation for the utility that is gained from leaving a bequest, p is the probability of surviving until the next period. Beta is the factor that discounts future consumption and gamma is the level of risk aversion. Utility levels themselves can only be ordered, but one cannot value the difference between two levels as such. By taking the utility level from a consumption path, we can come up with a constant consumption path that generates an equal utility level. These certain equivalents, as they are called, can be compared more easily and the results of my research are based on this principle. The best strategy In order to see whether 100% annuitization is indeed the best strategy, a base case is created. People have very Figure 1: Relative Certainty Equivalents of different strategies Figure 2: Welfare implications with bequest motive taken into consideration simple preferences, bequest motives are not present, and the financial market is simple. There is no inflation and there are no sudden financial shocks. In figure 1, the welfare implications can be seen. The blue line indicates the reference level, which is set for the strategy of 100% annuitizing. The xaxis displays the amount of money that a retiree annuitizes. If less than 100% of the money is annuitized, the rest of the money is consumed at a rate of 5% of the remaining capital every year. We see that 100% annuitizing is optimal and annuitizing less leads to a welfare loss that can be as large as 34% when the money is not annuitized at all. If a bequest motive is added to the preferences of the retiree, the results change. In figure 2, we see that 100% annuitizing is no longer optimal, as a retiree will benefit from taking a capital stock of about 20% of his money in order to be able to leave money behind in case of death. Results for the presence of background risk give us somewhat the same results. Money in the bank can be used as a buffer and a financial shock can be spread over a number of periods such that 100% annuitization is not the optimal strategy anymore. Conclusion Concluding, we can say that the Dutch mandatory annuitization is not a bad thing, since people are protected against the risk of living long as well as from making wrong decisions with their money. Besides, in many defined contribution schemes, people annuitize a far too small portion of their money. Furthermore, there is a nice mortality credit in an annuity, so people who survive benefit from the early death of other retirees. However, adding some flexibility in the pension can lead to more optimal strategies for consuming pension capital and hence lead to more welfare for the retiree, which is of interest to both the pension providers and the retirees themselves. | Nekst 1 - November 2009 33 n e x t r eme v al u e f r o m a b r o ad T he teache r Jonathan B. Hill is a visiting teacher from North Carolina. During his stay at Tilburg University, he teaches the first half of Econometric Methods and Research Methods. Let us find out how someone from the United States of America has become interested in econometrics and teaching. Name: Jonathan B. Hill Position: Assistant Professor Youth Jonathan was born in November 1965 in Colorado. There he entered the Sociology programme at the University of Colorado. When he had completed this programme he felt like he needed more, so he decided to start with a second master. After completing a master in Anthropology, it now felt like he needed much more, so he finally entered the road to become an econometrician and he did a major in Economics. During his studies he did some things within several student associations, but these group activities were limited as he was a bit shy in his younger years and often preferred to do things on his own. Therefore, he never did an internship as it required a lot more self confidence and those internships were often done by more aggressive students. When he was young, he planned to work in social service. Besides that he just tried to abide by his fathers’ philosophies: “Tell the truth, be clean and do well in school.” Career As Jonathan always wanted to be busy, his working days started quite early. Ever since he was twelve years old, he has had numerous jobs. He estimates the total number of jobs to be around seventy, starting with common things like working in a cafeteria, cleaning and tutoring. Later he also did social work, he worked in a juvenile jail and he even spent some time in Coors, a beer factory. He has not seen this brand in The Netherlands yet and he assures us that this is quite fortunate as it is terrible beer. When he was 25 years old and had finished his major in Economics, he decided to travel to Nicaragua, Spain, Germany and several other places outside the United States to learn about life and all its aspects, you would not learn at the university. He notices that students in the US are not very mature, as opposed to those in Europe. That is why students from the US often require an extra buffer after their studies in which they can learn how to live their lives. He definitely needed such an experience himself. When he was in those places he worked to pay for his next trip and this phase lasted for about five years. Afterwards, he went back to graduate school, but he had already developed some pretty strong philosophies and did not want to listen to some of his professors. As he got bored pretty fast, he started looking into extreme value theories. Jonathan: “I did not know what it was and I did not understand the language so it made me learn.” The past years he has worked as a teacher at universities all over the world. He has worked in Nicaragua, for example, and in Beijing where he met his wife. Nowadays he has a contract at the University of North Carolina, which allows him to do whatever he wants for one semester without getting fired, including teaching at Tilburg University. Besides teaching, he never had the desire to find a job on an academic level. “If you work for the government, especially in the US, there is a very deep agenda. And if you work for a company there is profiteering. You have to satisfy client wishes.” And on top of this, if you work for a company there is often no interaction with employees of other companies at all. “In academia you come together, you share ideas and blend them to get the best possible outcome.” He really likes this. Working day When we ask him about his current life as a teacher and researcher, he says that he works about eighty hours a week. However, he does very little work in the office as he cannot concentrate there. He and his wife just like to go to a café with their laptop and do some research there, whilst most of his colleagues are the exact opposite. Back home they even go to different pubs when they work at the same time, which most people do not understand. 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On Thursday 17 September the first freshmen activity of this academic year took place with the traditional dinner at Café Jack’s. Due to several activities for freshmen in that same week like the After TIK and a free barrel of beer for the winning team of the MAK-camp, the number of participating students was a bit low. However, the expression ‘The more the merrier’ does not always hold, since this activity was a great success! Stagiair Junior actuarieel medewerker In de sector zorg en welzijn is PGGM een financiële dienstverlener De toonaangevende afdeling Actuariaat & Asset Liability van formaat. Kijk maar naar de cijfers: we beheren de pensioenen Management van PGGM bestaat uit 25 professionals. Jonge van meer dan twee miljoen klanten en we beleggen negentig mensen, die advies uitbrengen over de meest uiteenlopende miljard euro wereldwijd. En dan hebben we het nog niet eens kwesties. Wat wordt bijvoorbeeld ons financiële beleid? Hoe over de aanvullende producten die we ontwikkelen. Kortom, ‘houdbaar’ is een pensioencontract? Wat is de beste methode typisch een organisatie waar ambitieuze vernieuwers zich van verslaglegging en welk verzekeringsproduct heeft echt kunnen uitleven. Zeker als je op zoek bent naar een uitdaging toegevoegde waarde? Maar ook: wat moet de invloed van het in het actuariaat. Heb je er de inhoud voor, dan wacht je een solidariteitsprincipe zijn? Al met al heb je tal van mogelijkheden. prachtige carrière op het snijvlak van zakelijk en maatschappelijk Je kunt beginnen met een (afstudeer)stage. Of je kiest gelijk belang. Inclusief een aantrekkelijk salaris, interessante oplei- voor de functie van junior actuarieel medewerker. In beide dingen en een prettige balans tussen werk en privé. Klinkt goed? gevallen doe je snel een schat aan kennis en ervaring op. Klopt. Lees meer over je kansen op www.pggm.nl/werkenbij En je krijgt alle ruimte voor initiatief. Dus: ben je bijna of net klaar met je studie actuariaat, wiskunde of econometrie? Bel (030) 277 85 43 voor meer informatie. Direct solliciteren is natuurlijk ook een optie. Stuur je reactie met cv naar PGGM, Human Resources, t.a.v. Martine Gersen, Postbus 117, 3700 AC Zeist, of per mail naar solliciteren@pggm.nl. www.pggm.nl/werkenbij Around half past seven, we all gathered at Café Jack’s in the city centre of Tilburg to start with a nice drink.When the participants were present, it was time to choose our meals! There were a lot of possibilities, differing from a fish dish to chicken with sauce or a mixed grill. Plates with the chosen dishes and bowls filled with chips were served. I had chosen the chicken with sauce, which was decorated with a salad on the side. Some of us ordered coffee or tea afterwards. When everyone’s stomach was filled, I gave a short speech to thank the group for coming to this first freshmen activity and to announce that is was now time to play the games. The bartender at Café Jack’s had already prepared the games and everybody randomly chose a game. Enthusiastically, I started to play the marble game with Chris, Fang Qi, Febi and Dumebi. This game was a bit like the game table shuffleboard (Dutch: sjoelen), which is a game where you have to shove wooden discs over a table into compartments and in that way you can receive different amounts of points. But instead of shoving discs you have to role marbles over a table. The trick was not to push the marbles too hard, because then they do not get in the compartments and you would receive zero points. After a few games, the five of us got some skills and wanted to play some other games. Next to the marble game,you could also play regular table shuffleboard. Furthermore, the famous student game ‘Stef the Stunt Pilot’, ‘Photoplay’ and also ‘Cow Trade’ were present. At the game ‘Stef the Stunt Pilot’, the team Van Heijst – Alkema (which consisted of our chairman Harold van Heijst and freshman Geert Alkema) defeated a lot of other teams. All freshmen and also the board of Asset | Econometrics enjoyed playing the aforementioned games. Around half past ten it was time for us to go to the kick-off party of Faculty Association Asset! So with the cheerful spirit we had, caused by the nice games, we went to Café Bolle. The theme of this party was ‘Asset: the world turns’. Our association Asset | Econometrics was dressed up like people from the country China. We characterised ourselves with the familiar Chinese hats which Geert, Anouk and I made in the afternoon that day. At Café Bolle many other members of Asset | Econometrics joined the freshmen and the board at the party. As a special act, Asset had arranged for the band of student association Plato called ‘Rolls Royals’. All people present danced to the familiar songs the band played. As I was coordinator of the photo camera, I made some nice and also some crazy pictures of our members, which can be viewed on our website. The party lasted until the early hours of the Friday that followed. Alltogether, I had a great evening. Playing games made us each other’s opponents for a few hours, because we all wanted to get the highest score. However, at the Asset kick-off party, the freshmen, the board and many other members of Asset | Econometrics became one large group of Chinese students! I am sure that the next freshmen activity will be a great one as well. | Text by: Whitney Pattinaja All dressed up like Chinese people Nekst 1 - November 2009 37 oard to board special On Tuesday 8 September the new board of Asset | Econometrics was chosen during the General Members Meeting. For the board members of 2008-2009 this was the time to say goodbye to their positions on the board and their places in the Astrics room. Are you curious to know their experiences of last year and what they have learned from each other? Last year, the board members worked very hard to run the association and as the members of Asset | Econometrics were able to see, they did very well! They organised a lot of nice and interesting activities with the help of many active members. The faculty association Asset was new and it was the first year the official language of the association was English. Furthermore, all members had to habituate to the new name Asset | Econometrics. These were quite a few challenges for the former board. What are you most proud of? As a chairman, Marije had many meetings with the other chairmen of the Asset associations about the faculty association. During the year these meetings were not always very easy, but in the end she is proud of the progress they have made with Asset. Mathijs was the coordinator of the lustrum committee. This committee worked very hard to organise a successful lustrum week. Because this was not a standard activity, there was no standard set-up and they had a lot of freedom in choosing the activities they wanted to organise for this week. He is also proud of the fact that the traditions of the association were maintained. Emile is proud of the fact that in spite of the establishment of the faculty association the identity of Asset | Econometrics was maintained. Stefan thinks about the bad financial times and is proud that in spite of some funding problems the association managed to organise all activities that were planned. Last year, Linda was the coordinator of the active members and she has seen many (new) enthusiastic active members who have developed themselves during the year. There is a nice sphere among the (active) members which she likes very much. drinking a couple of beers with friends in the city, which sometimes resulted in funny moments. During one night she sent an email to the symposium committee which was not really her intention. Emile tells a story about the après-ski party where they were wearing appropriate clothes. Another visitor of the pub told him that he looked like a goblin in those clothes. What was your most embarrassing moment? Linda thinks about the second General Members Meeting. There were not many members because it was a busy period for most students. Marije liked Stefan had an embarrassing moment during a company visit. He thought he saw the recruiter, but that person was the CEO of the company! Are there any aspects of being a board member you miss very much? The whole board misses the nice moments at the Astrics room and the long mail conversations. They also tell about their board meetings during which they had dinner and the sportive moments in the corridor during which they played volleyball or football. And of course they miss Linda’s jokes and Ria, the cleaning woman. What would you like to do differently? Marije had a period in which she did not have a good balance between serious tasks and parties. If she could do it again then she wants to change that. Emile was coordinator of the Active Members Weekend which he underestimated. Mathijs had the same problem with the lustrum, which cost more time than he thought beforehand. Linda thinks about the first edition of Nekst, the deadline was very soon and during that period the editor-in-chief and even his predecessors were in New York with the Business Research Programme. Since Linda had to do almost all final work, this was a very stressful period for her. For Stefan it was a pity that in spite of all work of the BRP committee, which he coordinated, the trip did not take place. Nonetheless, they all enjoyed being a board member and they are glad that they chose to be on the board last year. They wish the new board good luck for the upcoming year and they will certainly visit some activities this year. | Text by: Anouk Rennen Choices Mint tea or Sauce of Linda’s mother Cleaning woman Ria or house manager Ton Shredder or label maker Mint tea Mint tea Mint tea Sauce of Sauce of Linda’s mother Linda’s mother Can you describe your neighbour? Ria Ria Ria Ria Ria Shredder Label maker Shredder Shredder Shredder E109 and E110 E109 . Room E109, E110 or E123 Meeting or lecture E123 E110 E110 Do you have any addictions? What website do you visit the most? Meeting Being first on the Leaving last Astrics room or leaving last Meeting Meeting Meeting Meeting Being first Leaving last Being first Leaving last 38 Nekst 1 - November 2009 About Linda: About Mathijs: Simple of mind, Repairs hard worker, everything, dry open for humour, sharp of everybody, mind, consistent offbeat humour About Stefan: Enthusiastic about activities and approaching companies About Emile: Specialised in layout and design, perfectionist About Marije: Leader of the board, social and diplomatic person Toasties and mint tea Mint tea Festivals Sauce of Linda’s mother Chocolate milk Gmail 3FM Dumpert Youtube Dumpert What will your About Linda: neighbour be Job in Finance, doing in about she is coach of a ten years? volleyball team. About Mathijs: About Stefan: About Emile: About Marije: Optimising Full time risk Works a lot, but not Council of Advice, train schedules, manager with in the morning. He is she works two executive in a enough spare time pilot of a sailplane. days a week and small company. for his family. travels a lot. Nekst 1 - November 2009 39 lwa y s keep y o u r e y e s o pen B usiness I nte r view C B S For this interview, we took the train, the RandstadRail shuttle and a short walk over a pedestrian bridge to arrive at our final destination: the beautiful new building of the Centraal Bureau voor de Statistiek (CBS, Statistics Netherlands) in The Hague. After receiving our access cards, we entered the building through sliding glass doors (the so-called goldfish bowl). I was curious about the person we were going to interview, Frans Hendrikx (59) and what he could tell us about the CBS. Name: Frans Hendrikx CBS Statistics Netherlands was founded in 1899 and had only five employees at that time. In the course of time it has become a fullblown organisation. At this moment the CBS has offices in The Hague and Heerlen and the number of employees is approximately 2500. The organisation is responsible for collecting and processing data with the aim of publishing statistics that can be used in practice, for scientific purposes and for policy-making. Besides being responsible for the official statistics of the Netherlands, the CBS also supplies statistics to Eurostat. These statistics contribute to the development of European statistics. Age: 59 At Statistic Netherlands, Frans Hendrikx is CEO of the Central Departments at Statistics Netherlands.These departments are responsible for Human Resource, Finance, Operational Function: Management and Facility Services. Frans explains that where the CBS measures what has CEO of the Central happened in the past, the Netherlands Bureau Departments at for Economic Policy Analysis (in Dutch the Statistics Netherlands Centraal Planbureau (CPB)) forecasts the future. That is why the tasks of the CBS should not be Study and career Long before he started working for the CBS, Frans Hendrikx wanted to be a structural engineer. But electrical engineering also appealed to him, and he started this study in Eindhoven. Unfortunately, electrical engineering turned out to be less practice oriented than he thought. After hearing enthusiastic stories from some friends about econometrics, he switched to this study in Tilburg. One of the things he liked most about econometrics was the combination of economics with mathematics. Some of the mathematics courses in his first year as an econometrician resembled the courses in Eindhoven because the lecturer in Tilburg used the same syllabus Frans had used in Eindhoven. After his graduation, Frans worked for several companies before applying for a job at the CBS. His first position at the CBS was in the management of a team working on traffic statistics. He tells us: “I soon found out that you can do a lot of different things at the CBS”. After his management function in traffic statistics, he had various management positions in a “ I t c ou l d be interesting for young pe ople to star t here...” confused with the tasks of CPB. However, there is one exception where Statistic Netherlands does make predictions, namely in the field of demography. Forecasts in this field are used to predict possible demographic developments per region, and numbers of immigrants and households. number of different areas. He first switched to international trade and then to business economics statistics. There is a wide range of working areas at Statistic Netherlands. Surveys and research span a great variety of social and economic topics, which 40 Nekst 1 - November 2009 makes it possible to do many different things. For each topic, the CBS conducts many statistical surveys and publishes their results in a number of different ways. In addition to traffic, transport and international trade, it is also possible to work in the field of education, financial and business services, government and politics, or nature and the environment. Responsibility and flexibility Frans Hendrikx did not primarily choose to work for the CBS because of the media attention for their publications. However, he does mention to us: “It could be interesting for young people to start here, because short-term results of their own work are visible to a wide audience as they are published on the CBS website and have, if newsworthy, repercussions in the media.” CBS publications can also influence political debate, negotiations or parties. Frans: “A few years ago we published adjusted figures for the Consumer Price Index (CPI), which measures inflation. This happened at the very same time the labour unions were negotiating a new collective labour agreement (in Dutch CAO).” Obviously, one of the negotiating partners was not amused with these new figures. But because we have a fixed publishing schedule, we could not be accused of intentionally influencing the negotiations of the labour unions. At Statistics Netherlands, Frans Hendrikx’ responsibilities now include Finance and Operational Management, which comprises planning and realisation. He is also in charge of the Human Resources Department and General and Technical Services. His workplace is not always the same, since he works at the office in Heerlen for a few days in the week and at the office in The Hague on the other days. Also, his working hours differ from time to time. Sometimes he has to work in the evening, for example for deliberating with the labour unions. However, Frans can fit his hours to his own needs, so working at different times is not a real problem for him. He can even work from home, as teleworking makes it possible to access all his data from his home PC. Having this opportunity does not mean that Frans always works at home. On the contrary: most of the time he has to communicate with people, so he is at the office a lot. And it is not only Frans who has the opportunity to work from home, the rest of the staff also have this option. Young people often like this, because it makes their working hours more flexible. Frans explains: “University graduates are scarce compared with the number of jobs available, although this is currently camouflaged by the credit crunch. Because of this scarcity of high educated workers on the labour market, the CBS has to take care of its capacity of high educated employees. Giving the employees the opportunity to work at home, makes working at CBS more attractive for them. In this way, employees can combine their work and private life optimally.” New employees The CBS is experiencing a lot of changes. Since the organisation has many older employees who will retire in the next ten to fifteen years, the CBS will need new workers. It is therefore looking for university graduates, and possibly graduates from colleges for Higher Vocational Education (hbo). In addition to this change, the way the CBS collects its information has also changed. Statistics Netherlands used to collect data directly from companies and administration offices via formal surveys. But now it is increasingly using secondary resources like ‘UWV WERKbedrijf’ (department of employment) and ‘Belastingdienst’ (Dutch Tax Administration). To link and analyse all these data, the CBS needs highly educated people. At the same time, the demand for lower educated people is decreasing. Atmosphere When we ask Frans about the atmosphere at the CBS, he smiles and says: “Well, of course we have a good atmosphere here.” Without losing that smile, he tells us enthusiastically why there is such a good atmosphere: “We have a staff association that organises various activities every month.” Alongside the association for the whole staff, the CBS also has a club for younger employees; they organise trips to foreign statistical bureaus once or twice a year. Sometimes people ask about career opportunities at the CBS. Frans: “If you want to have an upward career, you have to be visible. Participate in projects that are bigger than your own organisation, participate in a project outside your own department, for example. Furthermore you also need good social skills.” New employees are screened for management skills after a short period of time. People with these skills will be given the opportunity to train and prepare for management positions. Frans indicates that most people who do these management courses do them because they took the initiative to do them. Tip A tip for starting econometricians from Frans: “Always keep your eyes open, even if you have found a job you think is good at that time. Your first job will probably be a good start, but it may not be what you expected. It is often possible to switch jobs within an organisation. The CBS is an organisation where this is possible, as long as you take the initiative.“ Our last question to Frans: “Would you make the same decisions if you had the opportunity to live your life again? He answers that he would certainly study econometrics again. He has worked for the CBS for quite a time now, and in the course of this period has held many different positions. If he was young now, he would probably work for a number of different companies. However, Frans Hendrikx is very satisfied with everything he has done so far. | Text by: Tess Beukers Nekst 1 - November 2009 41 W ill T il b u r g o b tain the c u p a g ain thi s y ea r ? N AT I O N A L E C O N O M E T R I C I A N S F O O T B A L L T O U R N A M E N T Many econometricians have been looking forward to 22 September 2009.On this date the National Econometricians Football Tournament (NEFT) would take place,which was organised by our fellow econometricians from Rotterdam this year. On this day it would be determined who will be the new holder of the high-valued NEFT cup. Will it go to Tilburg again or would another city manage to obtain it this year? When we arrived at the Excelsior Stadium in Rotterdam, we noticed that the attendance of Tilburg was quite high compared to that of the other cities, so it was not hard to feel at ease with all those fellow students. Every city was appointed a particular colour and our colour was pink, which of course would be the colour we would have chosen ourselves. There were approximately 25 teams from six different universities (Groningen, Amsterdam (UvA and VU), Rotterdam, Tilburg and Maastricht) of which there were seven teams dressed in pink. So the preparations were made and the tournament could begin. As econometricians from Tilburg, people are expecting a lot of us as it comes to football. History tells that a football team from Tilburg wins the cup almost every year. After a few games were played, some players noticed that the other teams were much better this year than previous years. So winning the cup would not be easy. Of course the members of Astrics did not let themselves to be intimidated and spared no effort in an attempt to reach the next round. Je kunt een land pas besturen als je de economische cijfers kent. De Nederlandse economie krimpt, in het tweede kwartaal van horeca en aan vliegreizen. Tegelijkertijd zijn de spaartegoeden 2009 met 5,1 procent. Onze uitvoer van goederen daalt in die periode toegenomen. Een deel van de werkgelegenheid wordt in stand met zo’n 11 procent en er vinden veel minder investeringen plaats gehouden door de deeltijd WW, het aantal vacatures is in het in machines, bedrijfsauto’s en huizenbouw. De huizenverkoop tweede kwartaal met 25.000 fors afgenomen. Deze en talloze loopt in het tweede kwartaal terug met 37 procent en de andere cijfers en feiten worden geleverd door het CBS. Een enorme bestedingen van huishoudens zijn afgenomen met 2,6 procent. hoeveelheid cijfers is onze grondstof, waardevolle en betrouwbare Bij de aanschaf van nieuwe personenauto’s is een terugval te zien informatie ons eindproduct. Op basis hiervan worden door de van zelfs 29 procent. Daarentegen is het aantal hybride auto’s overheid en het bedrijfsleven belangrijke beslissingen genomen. in particulier bezit verdubbeld. Driekwart van de hybride auto’s Bijna dagelijks verschijnt er informatie van het CBS in de media. staan op naam van 50-plussers. Uit onze onderzoeken blijkt Onze medewerkers rapporteren niet alleen over de Nederlandse tevens dat we circa 10 procent minder uitgeven aan elektronica, economie, maar ook over de internationale handel, de volks- zoals tv-toestellen, foto- en filmcamera’s en aan meubels en andere gezondheid, de verkeersveiligheid, de bevolking en het onderwijs. woninginrichting. De consument geeft ook minder geld uit in de Kijk voor onze vacatures op www.werkenbijhetcbs.nl Around 13.00 hours several players were getting hungry, since they scored many goals. Of course the organisation had foreseen this and they announced that every player could pick up a lunch bag. After some delicious sandwiches, a nutritious banana and a refreshing sports drink, everyone was ready to resume the tournament. After the lunch, people were starting to calculate their odds to make it to the next round. The teams were divided into four leagues of six or seven teams. Only the teams that earned the first place in their league would proceed to the next round, which were the semi-finals. The many spectators noticed that the duels between the teams were getting more intense now. Fortunately this fact did not lead to any accidents on the football fields. Everybody was in an extremely good mood and the teams which saw their chances for the semi-finals go to zero, started to order some beers. When all the matches were played, the organisation announced which teams would go to the semifinals. Sadly no team from Tilburg was announced. However, there was one team from Tilburg that managed to keep the glory high, namely Tempo Team. With four wins and two draws they collected fourteen points. Unfortunately there was also a team from Amsterdam in their league which collected fifteen points. Although they did not make it to the semi-finals, remaining unbeaten during the six matches can be called quite an accomplishment for Tempo Team. Bravo for the brave econometricians of Tempo Team! During the semi-finals the bar was getting more and more crowded. If there were people who felt sad about their elimination, this feeling would not last long. A cold beer would soon flush these bad feelings away. After the finals everyone hit the showers and prepared themselves for dinner. Which team had exactly won the final? Most people could not tell. Some said it was a team from Rotterdam. After dinner some students went home, but the real party people continued the event at a bar named Rotjeknor. Again our fellow econometricians from Rotterdam had arranged everything very well. From the terrace of the bar everyone had a nice view on the impressive skyline of Rotterdam. Name: Dennie van den Biggelaar Age: 25 Begin studies: 2008 Inside the bar the arrangements were even better: free beers for all econometricians! After several beers were consumed, we had to leave in order to take the last train to Tilburg. During the trip back to Tilburg someone suddenly took the cup out of his bag. Some students from Tilburg managed to obtain it from the cup winners during the after party at the bar. It was obvious that the econometricians from Rotterdam were not familiar with winning cups: it takes skill to win a cup, but it takes experience to hold on to it a whole year! With the cup in Tilburg, we can all look forward to the NEFT 2010. Many thanks to the organisation: it was a very nice event! | Nekst 1 - November 2009 43 u me r u s cla u s u s at til b u r g u ni v e r s it y W h y ha s life e x pectanc y inc r ea s ed ? opinion poll column As I walk through Prisma building, I see a student listening to his lecturer in the doorway. Not because this student is I would like to start this column by introducing myself, because many readers of Nekst do probably not know about to leave, but simply because the room is so full that it is impossible to fit in a chair. It turns out that universities in me. My name is Martin Salm and since autumn 2008 I work as an Assistant Professor at the department of The Netherlands had 25% more applications this year. 1 As it is inevitable that it will get too crowded if this trend continues, Econometrics and OR. My research interests are in empirical health economics, which means that I spend a lot several econometricians have been asked if they think it is time for action and what they would recommend for the future. of time thinking about gloomy subjects such as mortality, heart attacks, job loss and sick children. Fang Qi Wu (Freshman) Tilburg University should not introduce a numerus clausus in my opinion. For one, a numerus clausus means that not everyone who is interested in a certain course will get the chance to see if that is truly of their interest. Take a look at the Medicine programme. Thousands of students are disappointed every year, simply because they cannot fulfill their dream, which sometimes is a lifelong one. If they had been given the chance to, they would have been able to determine whether this programme is really what they have always wanted. If not, they can simply quit. I do realise the government wants to reduce the number of quitting students, because of the expenses, but that does not mean one should simply refuse these students. Apart from that, the means of choosing the lucky students is not always that fair, so I would rather see the numerus clausus not implemented at all. And finally, our campus is not that crowded yet, or is it? In my first column I want to write about a more uplifting topic, namely the increase in life expectancy. During the past two centuries life expectancy at birth in Western Europe has more than doubled. Whereas life expectancy at birth around 1800 in England for example was a mere 36 years (averaged over both sexes), it was 76 years in 1990 and has since then further increased. What can explain this increase in life expectancy? Nienke Vugts (Second year student) Tilburg University should not introduce a numerus clausus, because in the Netherlands it is a positive right to be able to study and it should stay that way. Of course, the number of people at any university should not affect the quality of education, so it might be a good idea to come up with some admission regulations. As a consequence, less (unmotivated) people will be admitted, because they would be forced to think twice about what and where they want to study. As a result, there will be fewer students at the university. However, everyone who is motivated and competent should be able to study whatever he or she wants. When you just put a limit on the number of people that can go to a university, you restrict them in their right to education and that is not a good development. I believe that more and higher educated people will help the economy and maybe even the world to improve. Twan Burg ( Third year student) Tilburg University should not introduce a numerus clausus, as it restricts the freedom of choice of the students who are looking for a study programme. Young people already have a big task finding the right programme and it is very annoying for them if they also have to face a numerus clausus. If there is a good reason to introduce the numerus clausus, for instance when it gets too crowded, I think it is the best to select students on quality and not to select students by means of a random generator just a few weeks before the year starts, for example based on their grades of high school. Actually, I think it would be most fair to let students do a test which contains elements of the study programme, so that the students can show their skills and talent. As this leads to a lot of extra effort, I would avoid introducing a numerus clausus. Dr R. Sotirov (Associate professor) In the last decade, European universities reported an increasing number of students. According to the annual report of 2008, Tilburg University attracted twelve percent more students than in the previous year. What do you expect to see in the annual report of 2009? If this increasing trend continues, I believe that Tilburg University is going to be forced to limit the number of students. This restriction will be required due to the space limitation dictated by the current campus infrastructure and the number of lecturers. It is known that some study directions have a large number of students and some only a few. Therefore, I think that a restriction on the amount of students should be done on the department levels and also with respect to the job market requirements. | 1. Giebels, K. (2009), Aantal Vooraanmeldingen Gigantisch Gestegen. Vereniging van Universiteiten, Den Haag. (Website: www.vsnu.nl, 20 Oct. 2009) 44 Nekst 1 - November 2009 One explanation that comes to mind are advances in medical technology. During the past two centuries medical procedures have progressed from blood-letting and amputations to open heart surgery and effective pharmaceuticals. But advances in medical technology were only one, and maybe not even one of the most important reasons for increasing life expectancy. According to Robert Fogel, a Nobel Prize winning economist at the University of Chicago, much of the increase in life expectancy during the past two centuries can be attributed to better nutrition1. Two centuries ago, most people not only had to forego the pleasure of eating bananas and oranges, but they simply did not get enough calories. For example, average daily calorie consumption in France was around 1800 calories in the year 1800 as compared to almost 3500 calories today. This means that the bottom fifth of the population ate just enough calories for sustaining basic body functions, with no energy left for physical work. Charles Dicken’s Oliver Twist probably spoke for many of his contemporaries in the middle of the 19th century when he asked for more food and farmers spent much of the winter in bed which allowed saving energy. This does not mean that large proportions of the population died routinely from hunger. But malnourishment made people vulnerable to mortality from infectious diseases, which were a major cause of mortality in Western Europe well into the 20th century. In my own research I find that higher veteran pensions at the beginning of the 20th centuries, which allowed beneficiaries to buy more food, reduced mortality from infectious diseases by half. However, poor nutrition does not only increase the immediate danger of dying from infectious diseases, but might also have important long term consequences. For example, during the 19th century the remaining life expectancy at age fifty was around two years higher for Dutchmen born during good economic times than for Dutchmen born during a recession. Thus, children who have had more favourable circumstances at the beginning of their life had much lower mortality rates even at old age. Even today, there is a strong relationship between height and mortality. Mortality for tall men can be only half the rate of mortality for small men. The average height of Dutch men in 1850 was only around 1.64 metres and it has since then increased to around 1.84 metres today. This increase in height alone can account for much of the decrease in mortality during the past two centuries. Name: Martin Salm Position: Assistant Professor But can the importance of better nutrition in explaining historical mortality trends tell us anything about the current situation or possible future trends? In Western countries, lack of calories has become a rare problem and there is little room for further improvements. Recent increases in life expectancy in these countries have been mostly driven by factors other than food, such as reductions in mortality from heart diseases. But lack of food is still common in developing countries and in these countries improvements in nutrition might have a large effect on lower current and future mortality rates. I personally believe that an improvement in the quality of food at the Tilburg University cafeteria could also be an important contribution to further increases in life expectancy in the Netherlands. | 1. A detailed account of his theories can be found in his book “The escape from hunger rand premature death, 1700-2100. Cambridge University Press, 2004. Nekst 1 - November 2009 45 etting a step ahead on the road towards sustainable globalisation asset inte r national confe r ence On 23 September 2009, the International Conference of Faculty Association Asset took place at the auditorium of Tilburg University. This year’s conference theme was ‘Reinventing the World: the road towards a sustainable globalisation’. The international conference turned out to be a great success as a large audience was present to hear many prominent speakers shed their light on this issue. Name: Eefje Godding Age: 23 Studies: Master International Business Begin studies: 2004 The process of globalisation has highly contributed to the world economy. The augmenting trade as well as the specialisation among countries has played an important role in the increase of wealth worldwide. However, the fragility of the globalisation process expresses itself in the form of several negative aspects. As a consequence, not everybody can benefit from the increasing wealth. In addition, the already unbalanced global income distribution has only become more unstable. Furthermore, the increased international interdependency also creates problems. The financial crisis, for example, has shown that local problems in a globalising world spread easily to other regions. These kinds of problems highlight the importance of international policy coordination. Globalisation requires an effective governmental and institutional framework, which should be able to lead developments in the right direction. However, developing such a framework requires changes and reformations. This is not only a task for politics, but also for business. In order to secure future profitability, companies can no longer ignore the necessity for future profitability in a globalising world. To be able to benefit from globalisation in the future, a sustainable arrangement of the world economy is required; an international framework that minimises the number of losers and, besides that, deals with the unintended negative consequences of globalisation. The present generation should ask itself what opportunities there are for a sustainable form of globalisation. This is a relevant question for science in the process of aiming for an optimal economic world order. At the same time, this question is important for politics in order to be able to act upon the necessity to take on in worldwide problems and policies. Finally, yet importantly, companies have an interest to reach a sustainable globalisation. Not mere because of the profit opportunities it offers, but also with regards to the responsibility of companies towards society. As we can see, the issue of sustainable globalisation is one with a certain level of complications and interdependency of problems. Therefore, the intentions of the conference committee were not to change the world decisively, since this would simply be impossible. However, the aim we had set ourselves was to create awareness for the subject and deliver a contribution to the public debate. We have tried to achieve this by organising an international conference, which looked at the issue from the main perspectives of science, politics, business and finance. The plenary morning session of the conference consisted of lectures from the perspective of these main domains. Jan Pronk (President of the Society for International Development), Peter Bakker (CEO TNT ), John Paul Broeders (CEO Vopak), Hans Hoogervorst (President of the Netherlands Authority for Financial Markets) and Sophie in ‘t Veld (Dutch Representative in the European Parliament of D66) provided the audience with a good insight in the obstacles and necessary changes by means of inspiring words taken from their fields of expertise. At the end of the morning programme, all the previous named speakers participated together in an interesting discussion panel. Under the lead of conference chairman Laurens Jan Brinkhorst (former Dutch minister of Economic Affairs), the discussion showed that it is often very clear what aspects need to be changed within a particular sector. However, making sure that the overall outcome of all domains is one of positive development, we shall need to make concessions. In other words, the high level of interdependency between the sectors is 46 Nekst 1 - November 2009 what makes it difficult to find the right balance. This balance should lead to a more sustainable world. One example of the need for such global cooperation is the recent meeting of the G20 leaders in Pittsburgh, where actions were discussed to assure a sound recovery from the global economic and financial crisis. Although our economies may survive the current recession, the prospects for neoliberal capitalism are less optimistic. The credit crunch and the current economic recession have shaken the faith of many neoliberal capitalists. It has become painfully visible that neoliberal capitalism does not always lead to an efficient and optimal distribution of production factors and welfare. Neoliberal capitalism is depicted as the main cause of the financial crisis and the economic recession. With this in mind, several questions arose: is neoliberal capitalism indeed the main cause of the current recession? To what extent is neoliberal capitalism still the economic system of the future and what are the alternatives? During parallel session ‘The Future of Capitalism’, Abram de Swaan (Emeritus University Professor of Social Science at University of Amsterdam), Onno Ruding (former Dutch Minister of Finance) and José Artur Denot Medeiros (Brazilian Ambassador in the Netherlands) have tried to review the system of neoliberal capitalism. A solution to the problem has not been found. Nevertheless, they have concluded that a stable global financial framework is needed in which everyone needs to be able to participate. As long as we keep on focussing on a few major players in the field, we will be unable to solve the issue of instability. When discussing the influential actors in the globalisation process, most people think about private or public parties. Companies are increasingly active on international markets, while governments try to increase their impact by working more and more together and multilateral organisations such as the International Monetary Fund (IMF) and the World Trade Organisation (WTO) also claim a bigger role in the world economy. However, the role of another important actor in the globalisation process is Prof. Bhagwati, Prof. Brinkhorst and Dr Van Schreven Nekst 1 - November 2009 47 Jij maakt het nieuws van de dag. Kom 12 november naar de Studentendag. Het kan je niet ontgaan zijn: we zitten er middenin, de media staan er bol van en vrijwel iedereen heeft er mee te maken. De kredietcrisis heeft onze economie in zijn greep en dat moet veranderen. De minister heeft advies nodig. En snel ook. Werken bij het Rijk. Als je verder denkt www.werkenbijhetrijk.nl Tijdens de Studentendag 2009 sta je oog in oog met de minister en de staatssecretaris van Financiën. Je werkt aan een echte case, met alle mediaaandacht van dien. En je maakt kennis met een interessante werkgever. Een jonge organisatie waarin nieuw talent direct wordt beloond met een flinke dosis verantwoordelijkheid. Bij Financiën tel je meteen mee. often underestimated. This actor is the so-called civil society, sometimes also referred to as the ‘third sector’. This civil society is based on voluntary relations and private initiatives and devotes oneself to promoting the interests of specific social groups and contributing to solutions for specific problems. These organisations aim at contributing to tackling problems like the extreme poverty in the Third World, worldwide environmental degradation and climate change, bad working conditions in many parts of the world and the violation of human rights. After all, reality shows that governments and markets are not automatically sufficient ingredients for bringing about solutions for a wide range of problems. Therefore, civil society, representing the interests of all kinds of stakeholders, has the potential to play a crucial role on the road towards a sustainable globalisation. After all, one of the aspects of a sustainable globalisation is that it takes into account the interests of as many stakeholders as possible. This ‘third party’ played the leading role in the other parallel session during the international conference, named ‘The Powerful Arm of the Global Civil Society’. Dennis Karpes (Co-founder of Dance4Life), Bouwe Taverne (Head Sustainable Developments at Rabobank Nederland), Gerard Oonk (Director India Committee of the Netherlands), and Farah Karimi (Executive Director of Oxfam Novib) have explained how they, each in their own way, contributed to tackling the negative consequences of globalisation. It was illustrated that throughout the years the power and influence of the global civil society have increased rapidly. First, civil society has gained influence on the agendas of the public and the private sector through the media and by lobbying with various parties. Second, the organisations are often invited as formal or informal interlocutors of, for example, politicians. Furthermore, an emergence of organised participation of the civil society could be observed at international organisations like the United Nations (UN). The last recent development is the establishment of partnerships between companies and civil society. Through the initiated dialogue, the global civil society is able to influence the policies of companies and governments and is thereby able to take a step ahead in becoming an even more powerful player in the globalisation process. Schrijf je in voor 2 november 2009 Wat betreft je profiel: je bent derde- of vierdejaars student algemene, bedrijfs- of fiscale economie. Ook met Nederlands of fiscaal recht en met bestuurskunde ben je van harte welkom, net als met iedere andere studie waar het vak openbare financiën in zit. Dus: heb je interesse in het financieel nieuws? En wil je binnenkort zelf het nieuws maken? Schrijf je dan vóór 2 november 2009 in via www.studentendag.nl. The international conference wanted to create awareness for the negative consequences of globalisation. Nevertheless, we should not forget that globalisation also has provided us with many positive aspects and that these can only be increased by adapting the global systems to the recent developments. Professor Jagdish Bhagwati from Colombia University (New York) started the closing session of the conference by making clear, using many jokes and anecdotes, that we need to defend globalisation above all. After his lecture, Roderick van Schreven (Director-General of foreign Economic Relations at the Dutch Ministry of Economic Affairs) once more emphasized the benefits that the Netherlands, as a country, has from globalisation and that we should strive for an even more efficient structure of it. Finally, the international conference was closed by an interview with Laurens Jan Brinkhorst, Jagdish Bhagwati and Roderick van Schreven. During the interview, the situation of the student within a global context was discussed. What advantages does globalisation offer students and what is the role of the student in the development of globalisation? It proved one last time the importance to students to be involved and contribute to globalisation, as we have experienced many positive side effects and need to make it available for others as well. The Asset International Conference 2009 turned out to be a success from an organisational perspective, but even more and most importantly, it was successful in creating awareness for the necessity of changes. Hopefully, we made a step ahead on the road towards a sustainable globalisation! | The organising committee with the chairman of the day Nekst 1 - November 2009 49 c o r in g g i r l s o n the pitch T he passion of M aa r tje de r onde Knowing a guy who plays football is a common thing, but knowing a girl who plays football is quite rare. With the recent publicity for women’s football in mind - the Dutch women’s team reached the semi-finals in the European Cup - Nekst became curious about female econometricians playing football. Fortunately, Maartje de Ronde’s passion happens to be football. Maartje started playing football in a team when she moved to Tilburg last year. She joined TSVV Merlijn, the student football association in Tilburg. However, she used to play football with her brothers since she was young. In fact, the only reason she did not join a team before is that there were no women’s teams in her home town. Instead, she used to do gymnastics, which is totally different from a ball game. When she got invited for a football clinic and found out that TSVV Merlijn had two women’s teams, Maartje did not need to think twice about subscribing. Name: Maartje de Ronde Age: 20 Begin studies: 2008 TSVV Merlijn TSVV Merlijn has, besides the two women’s teams, also seven men’s teams and three futsal (a kind of indoor football) teams. It is safe to say that it is quite a big association, although things have been different in the past. In 1996 it was decided to make Merlijn a so-called ‘sleeping association’ due to a lack of members. Luckily, three years later the association got revived again and since that time things have been going crescendo. One of the highlights is the opening of their own accommodation with artificial grass in August. This accommodation is named ‘Merlinello’, which sounds like an Italian name. We suspect the name comes from AC Milan’s state-of-theart training facility named ‘Milanello’. Of course, as proud students of Tilburg University, we can only hope that one day Merlijn will be as good as the aforementioned Italian team. Football At first, Maartje only participated in the training, but since March of this year she also plays competition. She likes playing a match more than training and of course winning or scoring a goal are one of the great things about matches. Unfortunately, her position in the field is that of a defender, so she does not score a lot. Maartje: “I only scored once. That was after a corner when I got the ball on my shoe.” Last year things did not go that well in the competition as most games 50 were lost. This year things are different though. Maartje: “After two games we are ranked in the middle with four points, while the other teams already played four matches.” Besides playing in a competition, Maartje also played a few tournaments. She was present during the National Econometrician Football Tournament, where she joined the board to form a team. Unfortunately, they did not win a single game. However, according to the chairman of Asset | Econometrics, Harold, it was not Maartje’s fault they lost. Another tournament organised by student association Plato was more successful for Maartje and her team. They reached the semi-finals just as the Dutch women’s team did during the European Championship. Maartje did not follow this championship on television though. These days she does not watch football on television at all, because she no longer lives with her parents where she had to watch football when her brothers wanted to see a match. Maartje rather plays football herself or as she puts it: “When I am playing football, others are watching television.” Like every sport, football requires special equipment. Needed are of course shoes, socks, shorts and shirts. Maartje does not have to buy all of this equipment herself, since Merlijn takes care of the black socks, shorts and the black and white striped shirt. You have to take care of your own outfit. Shin pads are also required to protect yourself from injuries. Yes, football is a tough sport to play. Luckily, Maartje never got seriously injured. She only had a sore knee for a while, but that did not prevent her from playing. Maybe the women are not as mean as the guys then? Maartje did not get any red or yellow cards yet, she did not even witness a referee giving a card to anyone else either. “Students do not play as aggressive as others sometimes do,” she says. Playing for the only student team in Nekst 1 - November 2009 the competition, she noticed that some other teams are a lot more aggressive when playing. The student mentality might be different, but Merlijn does get a lot of penalties against its teams, at least more than other teams get. According to Maartje, this is because of players, not necessarily on purpose, touching the ball with their hands in the penalty area. “Playing football is working in a team, so teamwork is very important. Another aspect is that due to the many losses in last year’s competition, I learned to deal with the feeling disappointment as well.” Knowing almost everything about Maartje’s passion by now, we do have a few things we would still like to know. of Asset | Econometrics is already a fan, but there might be others as well. In fact there is another fan: her boyfriend. He visits a lot of her matches like a true fan does. Not all matches are as pleasant to watch though. Maartje: “The worst match we played was when we had only ten players and after ten minutes the opponent already scored five times.” At “W hen I am pla ying football, ot h e rs a re watching television.” The passion Maartje trains twice a week and every training lasts about one and a half hours. A training session generally looks as follows: first the warming up, which is often dribbling in a square; then practicing shooting on goal and passing; and last but not least, the group is split in two to play a match against each other. Maartje does not need to give up a lot for her passion. Having training twice a week and a match on Sunday can relatively easily be combined with studying. Maartje repeats: “When others are watching television, I am playing football.” Of course, it is a matter of preference how you want to spend your time, either on the pitch or on the bench. When having exams it is possible for Maartje to skip a training session, but she hardly ever does that. Especially during an exam period it is nice to be able to do something physical as a counterbalance to the psychical effort that is needed to pass your exams. Maartje would describe herself as being an annoying defender. She calls herself annoying,because she gives her opponent absolutely no room to play. In the future, she does not aspire a professional career as a football player, since she just plays for fun. She rather finishes her studies in Econometrics. Playing football has also had some influence on her life. Maartje: We are sure she knows what offside means, so we will skip that question, but we would like to know if she is a fan of a particular player. Maartje: “I do not have a real favourite, but Robben is pretty good and Elia played very well for the Dutch national team recently.” She also remembers: “Van Persie was always kind of cute.” On top of that, her favourite team is Vitesse from Arnhem. We are also wondering if she has any fans herself. Of course every member the moment, the number of players is a problem for Maartje’s team, because they only have ten players where they need at least eleven for a match. It would be ideal to have fourteen players, so anyone who is interested is more than welcome to join. To conclude, Nekst wishes Maartje and her team good luck during the remainder of the season. | Text by: Bart Kruize Maartje’s team Nekst 1 - November 2009 51 illenni u m P r i z e P r o b lem s special In order to celebrate mathematics in the 21st century, the Clay Mathematics Institute of Cambridge, Massachusetts, (CMI) has named seven millenium prize problems. Solving one of these problems means that you can win a one million dollar prize, if your solution is approved by the CMI Scientific Advisory Board and the Board of Directors. In this special you can read a short introduction to these problems, but the main focus will be on one problem in particular, the Riemann hypothesis, and its creator Bernhard Riemann. Birch and Swinnerton-Dyer Conjecture This conjecture relates the number of points on an elliptic curve mod p to the rank of the group of rational points. The size of the group of rational points is related to the behavior of an associated Zeta function ζ(s) near the point s=1. In particular, this conjecture asserts that if ζ(1) is equal to zero, then there is an infinite number of rational points (solutions). On the other hand, if ζ(1) is not equal to zero, then there is only a finite number of solutions. also easy to solve? This is the essence of the P vs NP problem. his most important work during his stay in Berlin. Poincaré Conjecture Henri Poincaré asked himself if the three dimensional sphere is characterized as the unique simply connected three manifold. It was known in his days that a two dimensional sphere is essentially characterized by this property of simply connectivity. However the question asked by Poincaré turned out to be extremely difficult. Hodge Conjecture A powerful way to investigate the shapes of complicated objects is to ask to what extent we can approximate the shape of a given object by gluing together simple geometric building blocks of increasing dimension. The Hodge Conjecture gives a way to find the geometric origin for particular nice types of spaces called projective algebraic varieties.These spaces have a dimension set less than four, but in dimension four the Hodge conjecture is unknown. Yang-Mills and Mass Gap Experiment and computer simulations suggest the existence of a “mass gap” to describe strong interactions of elementary particles. Proving this property will require the introduction of fundamental new ideas both in physics and in mathematics. He returned to Göttingen in 1849, where he worked on his PhD thesis supervised by Gauss. Heinrich Weber and Johann Benedict Listing, who both came to Göttingen in 1849, strongly influenced Riemann. He gained a strong background in theoretical physics through Weber and Listing. He also learned important ideas in topology, which were of influence on his research. Riemann’s thesis studied the theory of complex variables and, in particular, what we now call Riemann surfaces. Riemann’s thesis was examined on 16 December 1851. Navier-Stokes Equation This equation gives an explanation for and a prediction of the flow of fluids such as water and air. But there is no proof of basic questions like: do solutions exist, and are they unique? The challenge is to make great progress towards a mathematical theory which will explain the secrets in the Navier-Stokes equation. Bernhard Riemann was born on 17 September 1826. His father taught him until he was ten years old. In 1842 he entered the Lyceum in Hannover, but he moved to the Johanneum Gymnasium in Lüneburg two years later where he showed a particular interest in mathematics. In 1846, Riemann enrolled in the University of Göttingen. He moved from Göttingen to Berlin University in the spring of 1847 where he studied under Jakob Steiner, Carl Jacobi, Lejeune Dirichlet and Gotthold Eisenstein. The main influence on Riemann came from Dirichlet, who had an intuitive way of working, which suited Riemann. He worked out his general theory of complex variables that formed the basis of some of P vs NP problem An example of this problem is the following: how can you choose one hundred students out of four hundred students, given a list with couples of students who should not appear in your final solution? The solution of this problem is easy to check, but is it Georg Friedrich Bernhard Riemann In the remainder of this article, the life of Riemann will be discussed and thereafter his famous hypothesis will be formulated and explained. 52 On Karl Gauss’s recommendation, Riemann was appointed to a post in Göttingen, where he worked for his Habilitation, the degree which would allow him to become a lecturer. He gave the conditions of a function to have an integral, what we now call the condition of Riemann integrability. He gave a lecture on 10 June 1854 to complete his Habilitation, which became a famous lecture among mathematicians. Another masterpiece of Riemann was published in 1857. This paper continued where his doctoral dissertation had left off and developed the idea of Riemann surfaces and their topological properties. In 1859 Riemann was elected to the Berlin Academy of Sciences. As a new member, Riemann had to report his most recent research. In this report, Riemann examined the Zeta function, which had already been considered by Leonhard Euler. This report contains the famous Riemann hypothesis which remains today one of the most important unsolved problems in mathematics. Nekst 1 - November 2009 In June 1862 Riemann married Elise Koch, with whom he had one daughter. In the autumn of that same year, Riemann caught a heavy cold, which turned to tuberculosis. In order to try to fight the illness, he went to the warmer climate of Italy, where he spent most of his time. Richard Dedekind wrote: “His strength declined rapidly and he himself felt that his end was near. But still, the day before his death, resting under a fig tree, his soul filled with joy at the glorious landscape, he worked on his final work, which unfortunately, was left unfinished.” Riemann died on 20 July 1866. After his early death, Dedekind made the beauty of Riemann’s lectures available by publishing the material. The Riemann Hypothesis The Riemann hypothesis has all to do with prime numbers. Prime numbers are natural numbers having exactly two distinct divisors - also belonging to the natural numbers - implying only 1 and the prime itself. So the first numbers are 2,3,5,7… (1 not included). Prime numbers play an important role in mathematics and its applications. At first sight, the distribution of the prime numbers among all natural numbers appears to be following an irregular pattern. However, Riemann observed that the frequency of prime numbers is related to the behavior of the following function: called the Riemann Zeta function. As a derivation of this function, the Riemann hypothesis states that all interesting solutions of the equation ζ(x) = 0 lie on a vertical straight line. A proof that this is true for every interesting solution would shed light on many of the mysteries surrounding the distribution of prime numbers. Therefore, the Riemann hypothesis is currently known as the most important unsolved problem in mathematics. In the remainder of this article an attempt is being made to clarify this problem and to offer you a start for winning one million dollars! Halfway the 19th century, the Russian mathematician Pafnuti Chebyshev introduced a ‘logarithmic prime counting function’ (ψ) to determine the frequency of prime numbers among the natural numbers. He defined this function as follows: take a natural number and determine all powers of the prime numbers being smaller than or equal to this natural number and give each power a weight corresponding to the natural logarithm of this prime. So in case of studying the natural number 10, this yields: ψ(10) = 3 * ln(2) + 2 * ln(3) + 1 * ln(5) + 1 * ln(7) = 7.8320, since three powers of 2, two powers of 3 and one power in the other cases fit below this number 10. An exact formula for this function is given by: The first term is equal to x whereas the second term is just a constant. The most difficult part of this formula is the latter term. This summation contains the Greek ρ (rho) being any point corresponding to a zero solution of the Riemann Zeta function, called a ‘zero’. The Riemann hypothesis is based on these points. It is known that the Zeta function has infinitely many zeros, so this will be a summation of infinitely many points. As can be deduced from the definition of the Zeta function, every value of x smaller than or equal to 1 corresponds to a function value of infinity. However, for every x larger than 1 the function does converge and the corresponding function value can be determined. In the 18th century, Leonhard Euler already found a solution for ζ(2). He was also able to find the function value for all other even numbers. The odd numbers are rather complex. Although it is possible to determine solutions, no mathematician has been able to derive an algebraic expression for these values yet. Moreover, in 1978 it has been proven that ζ(3) cannot even be written as a fraction. Euler derived a relation between the Zeta function and the primes: This product of terms consists of fractions in which the denominators are defined by all prime numbers. Solutions are found by using the zeros of this function. But what are these zeros? As stated above, the Zeta function is only applicable for values of x larger than 1. To make sure this function can also be used for values smaller than or equal to 1, another function has been created. This function, called the èta function (η), consists of the same terms, but is constructed by means of plus and minus signs: Because of these signs, this function also converges for values of x between 0 and 1. The relation between the Zeta function and the èta function is: By means of this formula we can also define the Zeta function for values of x larger than 0 (excluding 1). A further extension of the Zeta function is realised by allowing complex numbers in the domain. Complex numbers are of the form z = x + i*y, with i = √-1. The Zeta function seems to be converging for complex numbers on the right hand side of the vertical line x = 1. The èta function can also be defined for complex values and the above equation still holds in this case. In other words, the Zeta function converges for all complex numbers on the right of the y-axis (excluding all points with z = 1). Eventually, Riemann was able to define the Zeta function for a domain consisting of all complex numbers unequal to 1. The Zeta function appears to have no zeros at all, since its values would be larger than 1 for every x >1. However, by using the above techniques, it is possible to find two types of zeros: trivial zeros and nontrivial zeros. Trivial zeros are rather easy to find, since they all lie on the negative side of the real axis. These points are the even negative numbers: -2, -4, -6, … Next to these points, there are also infinitely many nontrivial zeros. These zeros are all located in the so-called critical zone. This critical zone is the collection of points between the line x = 0 and x = 1 in the complex space. Riemann stated that all non-trivial zeros are located in the middle of the critical zone on the critical line defined by x = ½. See graph 1 for a graphical representation. Nekst 1 - November 2009 53 T he O r ientati o n and I nf o r mati o n D a y C ommittee P r ofile These non-trivial zeros are the key to the relation between the Zeta function and the logarithmic prime counting function (ψ). The Riemann hypothesis is still not proven to be either valid or false. Nonetheless, a lot of research has been done in the field of non-trivial zeros. For instance, they are always present as pairs of x + yi and x – yi, so they are mirror images with respect to the x-axis. Therefore, you only have to search in the upper part of the critical zone. Above all, if you are able to find just one point off the critical line, then you have proven the hypothesis to be false. The hypothesis remains unsolved, although modern computer calculations have shown that the first ten trillion zeros lie on the critical line. If you are able to prove the Riemann hypothesis, then you will help a lot of people in the field of mathematics, since a lot of theorems are based on the validity of the Riemann hypothesis. In order to help you even more with winning one million dollar for proving this hypothesis, we included several mathematicians who have tried to prove the Riemann hypothesis and could help you with revealing the truth. First of all, Watkins (2007) listed various incorrect and some frequently announced solutions. Some proofs still need to be checked and others are already withdrawn by the authors. Hilbert–Pólya Conjecture Hilbert and Pólya used spectral theory to prove the Riemann hypothesis. They used a self-adjoint operator to yield a theory on the real parts of the zeros of the Zeta function based on a criterion on the real eigenvalues. Odlyzko (1978) showed that the distribution of the zeros shares some statistical properties with the eigenvalues of random matrices drawn from the Gaussian unitary ensemble - obtained by multiplying a translation-invariant measure by the Gaussian function. These theories support statements of the Hilbert–Pólya conjecture. satisfies the bound The Orientation and Information Day (OID) has been organised by Asset | Econometrics since 1998. This year the OID committee 2009-2010 has the honour and challenge of organising this event, which will take place Graph 1: the critical line for the Zeta function Lee-Yang Theorem The Lee-Yang theorem states that the zeros of certain partition functions in statistical mechanics all lie on a “critical line” with real part 0. This theorem led to some speculation about a relationship of these partition functions with the Riemann hypothesis. Skepticism The numerical verification that many zeros lie on the critical line seems to be strong evidence for the Riemann hypothesis. However, analytic theory knew many conjectures supported by large amounts of numerical evidence that eventually turned out to be false. A counterexample to the Riemann hypothesis with imaginary part of immense size might be far beyond anything that can currently be computed. The problem is that the behavior of the zeros is often influenced by very slowly increasing functions, that tend to infinity, but do so slowly that this cannot be detected by computation. with probability 1. The values of this function are positions in a simple random walk and you may even be able to calculate these values yourself. The Riemann hypothesis is equivalent to this bound for several functions. In other words, the Riemann hypothesis is in some sense equivalent to saying that μ(x) behaves like a random sequence of coin tosses. Such probabilistic arguments are often true, but tend to be very hard to make rigorous and occasionally give the wrong answer for some results. The calculations in Odlyzko (1987) showed that the zeros of the Zeta function behave very much like eigenvalues and suggested that they are the eigenvalues of some self-adjoint operator, which would imply the Riemann hypothesis. However, all attempts to find such an operator failed. So whatever your opinion is about the validity of the Riemann hypothesis or any other of the millennium prize problems, do not hesitate and prove your conjecture in order to win one million dollars! | Text by: Tess Beukers & Frans Fonville Reference list 1. The Clay Mathematics Institute of Cambridge, Massachusetts (CMI). (Website: http://www.claymath.org/millennium, 16 Oct. 2009) 2. Craats, J. van de and R. van der Veen (2008), Lesteksten bij de webklas wiskunde: De Riemann Hypothese. Korteweg-deVries Instituut voor Wiskunde, Universiteit van Amsterdam, Amsterdam. There also exists a probabilistic argument for the Riemann hypothesis (Edwards 1974). If μ(x) is a random sequence of 1’s and −1’s then, for every ε > 0, the function 54 on Wednesday 4 November 2009 at The Gallery. The OID committee 2009-2010 consists of seven members. Claudia Rommens (Chairman), who tries to keep us focused and organised especially during the meetings; Bart Kruize ( Treasurer), who is in charge of moderating our wild ideas of which the execution simply does not fit into the budget; Marleen Balvert, Pascal Heuijerjans and Evelien Kerkmeijer (External Affairs) who have found some very interesting companies willing to participate; Stèphanie van Breda (Coordinator) who, together with the chairman, makes sure everything is taken care of; lastly Tycho Speekenbrink (Secretary) who ensures that all that is spoken about in the meeting is not immediately forgotten. The OID has always had two main purposes. Firstly, this day provides bachelor students with information about the remainder of the Econometrics and Operations Research (EOR) programme and about the different master programmes. Secondly, this day provides the opportunity for all EOR students, including master students, to get acquainted with the labour market. The OID provides information about the EOR study programme to bachelor students via an information session. Freshmen are informed about the remainder of their bachelor programme. At the same time second year students are informed about the optional courses they can take and about the different master programmes. 3. Edwards, H. M. (1974), Riemann’s Zeta Function. Dover Publications, New York, ISBN 978-0-486-41740-0. 4. Odlyzko, A. M. (1987), On the distribution of spacings between zeros of the zeta function. Mathematics of Computation 48 (177): 273–308, ISSN 0025-5718. 5. Robertson, E.F. and J.J. O’Connor (1998). Biography of Georg Friedrich Bernhard Riemann. (Website: http://www-history.mcs. st-andrews.ac.uk/Biographies/Riemann.html, 16 Oct. 2009) Nekst 1 - November 2009 To get acquainted with the labour market several other sessions are organised. Companies that represent one or more of the different master directions, Quantitative Finance & Actuarial Science, Operations Research & Management Science and Mathematical Economics & Econometric Methods, are present. To get a general idea of the different directions and of the specific companies, we included several company presentations as well as several company cases for a bit more interaction. After a hectic period of organising, due to, among other things, the summer holiday where it was more likely to get a voicemail than a person on the other end of the line, we managed, for the aforementioned presentations and cases, to get some very interesting companies. At this edition of the Orientation & Information Day the companies that are present are Accenture, CPB, ING, Pharmerit, TNO and Watson Wyatt. This year two other brand new features will be introduced to the OID. The first feature is the possibility for third year and master students to ask all their specific questions about the company or about a possibility for an internship, work-studentship or an aftergraduation job in a speeddate session. The second feature is the possibility for students to get informed about the best way to set up a CV in the CV session organised by the Student Service Centre. Traditionally, the OID presents some other unique events on the day. There is for example an orientation debate, under guidance of Henk Norde, a case organised especially for freshmen, this year by Ruud Hendrickx and John Kleppe, and an introduction of the day by means of a presentation about an actual econometric subject. This year Hein Fleuren, who has his own company “OR Coach” and whom you might know from the courses Simulation or Supply Chain Collaboration and Advanced Planning, has provided us with the honour of presenting on this year’s OID. On this day he will tell us about research he has done in the field of Operations Research & Management Science. Name: Tycho Speekenbrink Age: 22 Begin studies: 2008 We want to conclude this article by saying that we hope to see you all the 4th of November in The Gallery for the OID 2009! | Nekst 1 - November 2009 55 g r eat s ta r t o f a new t r aditi o n A n e s cape f r o m the w o o d s TILBURG UNIVERSITY CANTUS puzzle On Thursday 3 September 2009 a very special cantus took place and of course: I was present. To celebrate the In order to solve this puzzle, you have to be a real adventurer. The goal of this puzzle is to escape from the opening of the academic year, 1300 thirsty students gathered at the Heuvel square to sing, drink and enjoy. woods. Your analytical skills may come in useful, but you never know what may happen in the woods… Together with a friend of mine from Hungary and thirty enthusiastic econometricians, we had a night to remember. Name: Inge Pulles Age: 22 Begin studies: 2005 The Tilburg University Cantus was an idea of three former Tilburg University students. They looked at other Dutch and Belgium student cities and realised that our opening of the academic year was just a celebration for a select group of people instead of for all students. That is why these three former students wanted to organise a big event so that all students would celebrate the beginning of the academic year and meet their friends again after a two month holiday. Since the students in Tilburg have a history in having a socalled cantus, they decided that they wanted to organise such a cantus, too. This idea turned into reality on 3 September, when 1300 students from Tilburg University, Avans and Fontys gathered on the Heuvel square to participate in the first Tilburg University Cantus. For the people that do not know what a ‘cantus’ is, I will explain this typically Dutch students’ tradition: a cantus, also called beer cantus, is an event where singing and drinking beer go hand in hand.You sing songs out of a special ‘cantus booklet’ and a choir of men sings the songs while the participants sing along. There are rules during the cantus like ‘do not go to the toilet during the songs’ and ‘do not get your beer yourself, since there are people to bring you beer’. These rules have been made in order to make the cantus go smoothly. Luckily, sneaking to the toilet was possible during this cantus. Singing in the rain 56 Even before the cantus started, we had our first beer during an enormous beer drinking race. Our row of tables, consisting of thirty members of Asset | Econometrics, thirty members of Asset | Accounting & Finance and ten members of Asset | First International, organised a contest to see which side of the table was the fastest with drinking beers. This resulted in a lot of encouragement and ‘bottoms up’ drinking. Eventually the other team won. The cantus started with some speeches followed by the traditional first song: our national anthem. After that, the sky was turning more and more grey and it looked like it would not only be beer falling out of the sky. Luckily the organisation arranged ponchos for everyone so that all die-hard participants could continue with the beer cantus in the rain. My friend from Hungary, who was visiting me those days, had a blast, too. She had a great time singing Dutch songs and experiencing this Dutch tradition. It was really nice to show a foreigner the great traditions that we have. Nowhere in Europe people combine drinking beer and doing karaoke (two of my favourite hobbies) as well as in the Netherlands. Of course the cantus ended with a lot of drunken people throwing beers, dancing on the tables and performing the tradition of dancing in a row known as ‘polonaise’. In these kinds of events, photos tell more than words and according to the photos we all had a wonderful time. After the cantus, most people went to Café Philip to have a great after party. Others went for something to eat or were so wasted they thought it was better to go home. This might be positively correlated with the scheduled classes on Friday morning. First of all, this puzzle appears to be less difficult than usual. But the opposite is true. The mathematician Euler discovered a rule for solving all kinds of maze puzzles. His method is mainly based on working backwards. This puzzle, however, was built to defeat this strategy. The rules are simple, but strict. the number of steps indicated in the square. Your journey continues, following the requirements of the numbers reached, until you come upon a square with a number which will help you just one step beyond the border of the forest. In this case you will be out of the woods and you can hop around, as you will have solved the puzzle! You start in the centre of the woods and since you are scared to death you will only use the main roads. These roads lead in eight directions: north, south, east, west, northeast, northwest, southeast and southwest. You have to follow the road until you reach a new spot in the woods, where you can rest. The number in the square indicates the number of steps you can travel the next day with the amount of energy you have after a night of sleep. You can only move this number of steps in a straight line in the eight directions to a new spot. From this new spot you can reach other places with Please send your solution to the puzzle to Nekst@AssetEconometrics.nl before 1 December 2009. The previous puzzle, the mental arithmetic training, was solved by many readers. Therefore, Nekst chose a winner at random. The lucky winner is Gerwald van Gulick. He can pick up a crate of beer or a cake (Dutch: vlaai) at the Asset | Econometrics room. For the winner of this puzzle, the same prize will be waiting. Good luck! Example Only the 3 in the square in the bottom left corner can take you out of the woods, since it takes you exactly one step away from the border. Any other square gets you too far in any direction and therefore you cannot leave the woods starting from those squares. | To conclude I want to stress that such an event is something you have to experience during your studies in Tilburg. This also involves international students. So see you on 12 November 2009 at the COdE beer cantus? | Nekst 1 - November 2009 Nekst 1 - November 2009 57 r ad u ate s P lannin g to conclude to conclude Over the past months, the following econometricians obtained their Bachelor’s and Master’s degree. Asset | Econometrics would like to congratulate: Name: Supervisors: J. Abbing Dr Ir C.M.H. Kuijpers, Prof. Dr H.A. Fleuren Name: Title: Supervisors: I. Blankers Using the Shapley Value to break terrorist networks Prof. Dr H.J.M. Hamers, Prof. Dr P.E.M. Borm Name: T.J. Boonen Title: Average Marginal Contribution Rule for Risk Capital Allocation Problems Supervisors: Prof. Dr H.W. Norde, Prof. Dr A.M.B. Dewae genaere Name: Title: Supervisors: M. Keuten Forecast Accuracy Evaluation in Consumable Parts Distribution Dr Ir Ashayeri, Dr Ir L.W.G. Strijbosch Name: Title: Supervisors: K. Mennens Welfare implications of the use of annuities in the decumulation of pension entitlements Prof. Dr Th.E. Nijman, Prof. Dr B.J.M. Werker Name: Supervisors: I. Minderhoud Dr R.J. Mahieu, Prof. Dr Th.E. Nijman Name: Supervisors: M.H.N. Cornelissen Prof. Dr H.A. Fleuren, Dr Ir Ing. Peeters Name: Supervisors: Nguyen Prof. Dr B. Melenberg, Dr J. Inkmann Name: Title: Supervisors: C.C. DuPlooij Measuring the risks in a defined contribu tion pension plan – the Dutch case Dr R.J. Mahieu, Prof. Dr B. Melenberg Name: Title: Supervisors: H. Snijders Methods for recursive packing problems Prof. Dr Ir D. den Hertog Name: Title: Supervisors: B. Gorissen Almost distance regular graphs Prof. Dr Ir E.R. van Dam, Dr Ir Ing. M.J.P. Peeters Name: Title: Supervisors: M. Groote Schaarsberg Cooperative Operative Games Prof. Dr P.E.M. Borm, Prof. Dr H.J.M. Hamers Name: R.D. Heesen Title: How Flow can you go Supervisors: Prof. Dr H.J.M. Hamers, Prof. Dr H.A. Fleuren Name: Title: Supervisors: J.M. Janus Scheduling OR Planning Dr Ir J. Ashayeri, Dr R.C.M. Brekelmans Name: R. Stasiukynaite Title: Herding Behaviour in an Agent-Based Financial Market Supervisors: Prof. Dr B. Melenberg, Dr R.J. Mahieu Name: Title: Supervisors: M. Taanman Developing a production planning tool for brass alloy manufacturing Prof. Dr H.A. Fleuren, Dr R.C.M. Brekelmans Name: Title: Supervisors: Yuan Yuan Wu Scaling Properties Analysis of Stock Market Volatility Using Wavelet-Based Methodology Dr R.H. Mahieu, Prof. Dr B. Melenberg Wednesday 4 November Orientation & Information Day During the Orientation & Information Day students of the Econometrics & OR programme will be informed about the remainder of their studies and about the master directions they can follow. Furthermore, the day is an opportunity for students to get into contact with companies by means of, among others, a case and a presentation. Saturday 7 November Former Active Members Day On this day the first KOALA activity of this academic year will take place. Together with old active members, we are going to dine at restaurant ‘Sprakeloos’. We will gather at 18.30 hours to enjoy a three course dinner. Tuesday 10 November Activity & Lecture Drink After the success of the Game Afternoon, the Drinks & Activities committee will organise their second activity for all members. Afterwards, we will go to Café Qwibus for a lecture of Ernst & Young and a drink. Thursday 12 November Beer Cantus The first Beer Cantus of Asset will take place on 12 November. During this evening, students will sing a lot of familiar songs combined with a beer after every song. Like any beer cantus, it is going to be a great event. 58 Nekst 1 - November 2009 Friday 20 November Active Members Day On this day, we want to thank our active members for their contributions to the association during this year. The programme of the day will be a secret for every active member except for the Active Members Day committee. Tuesday 24 November up to and including Friday 27 November Finance Expedition During this week a select group of students will visit five financial companies in the Randstad Area. The participants will make cases at the offices of the companies. Besides this interactive session, there will be dinners and lunches with the recruiters of the companies. Tuesday 8 December Freshmen Activity & Drink On this day, the Freshmen Committee will organise a great activity for all first year econometricians. Afterwards, we will go to Café Babbus to join all the other members for a drink. Friday 11 December Parents Evening On this evening, the parents of all active members are invited to take a closer look at Asset | Econometrics. They will hear about the different committees we have and they will see where their children hang out all day. Nekst 1 - November 2009 59 u at s ch ! r ema r kable quotes Fortunately, the editorial staff of Nekst received many quotes that relate to the study of Econometrics and to the activities organised by Asset | Econometrics. Therefore, a very well-filled page with some striking and sensational quotes! Please mail all remarkable quotes you have heard to Nekst@Asset-Econometrics.nl! English quotes Mr Schumacher during Financial Models: “Some of your assignments were marked as spam. So please avoid the word ‘Viagra’ in your assignment next time.” Mr Schumacher during Financial Models: “Not Wiener Melange, but Wiener Process. (...) What would be the next term? Yes, indeed ‘d_t’, not d_Coffee.” Mr Drost during a lecture of Statistics for Econometrics: “Let us take a look at a: Thietebar (θ).” Haemers explains an equation about transforming real numbers into complex numbers during a lecture of Applied Linear Algebra: “Complex makes it easy, that is why it is called complex.” Mr Charlier during a tutorial of Risk Theory: “Those stars just mean multiplication.” Ms Sotirov during a lecture of Combinatorial Optimization: “Not any solution of a knapsack problem is feasible. You cannot put a house in your suitcase.” Dutch quotes Stephanie van Breda in een mail naar een actief lid n.a.v. een vraag met betrekking tot de tijdsdruk in deze commissie: “De Asset Conference commissie kost ongeveer 15 euro per week.” Whitney Pattinaja geeft haar interpretatie van ‘t.a.v.’: “Moet die brief dan verstuurd worden ter aanvang van?” Stephanie van Breda: “Linda, hoe heet die man ook alweer met wie we zo een afspraak hebben?” Linda: “Rob Smit”. Stephanie tegen de receptioniste: “Goedemiddag, we hebben een afspraak met Bart Smit.” Whitney Pattinaja bij het bespreken van de post ‘printing cost’: “Dus de printing costs bestaan met name uit inktkosten? Maar we hebben toch genoeg pennen op de kamer?” Stephanie van Breda stuurt een mail naar een bedrijfscontact: “Bedrijven houden op de OID een case van 300 woorden.” Linda Vos stelt een serieuze vraag over het onderwerp zweefvliegen: “Moet je dan ook betalen voor de brandstof?” Linda Vos over de schilderijen van de schilderworkshop: “Mevrouw Schilder belde vandaag om te vertellen dat je de doeken op kan halen.” Evelien Kerkmeijer aan de telefoon: “Kan ik mevrouw Schilder spreken over de doeken?” Respons: “Mevrouw Schilder is bij ons niet bekend.” Pascal Heuijerjans: “Welke kleur badges krijgen de leraren dan?” Claudia Rommens: “Ik denk dezelfde als de docenten.” Stephanie van Breda: “Mathijs, deze teruggestuurd.” brief is ...als je niet voor de grootste kiest. retour Ruud Hendrickx’ meestergrap: “Het is oranje en het golft, rara wat is het?” (…) “Een sinusappel.” Whitney Pattinaja tegen een oud-bestuurslid: “Als een student met pensioen gaat, moeten wij dan daar ook heen?” Claudia is bezig met de adressen om het OID boekje naar toe te sturen: “Waarom woont iedereen op nummer 31. Heb ik iets verkeerd gedaan, ofzo?” Stephanie van Breda tijdens beachvolleybal: “Dat gras is best koud onder mijn voeten.” Wie graag goed wil leren zeilen, kan twee dingen net zo goed voor onze traineeships waarin je diverse doen. Je kunt aan boord stappen van een groot zeilschip functies bij verschillende afdelingen vervult. Waardoor je en alles leren over een bepaald onderdeel, zoals de stand meer ervaring opdoet, meer leert en sneller groeit. van het grootzeil. Of je kiest voor een catamaran, waarop SNS REAAL is met een balanstotaal van € 124 miljard en je zelf de koers bepaalt en jouw ontwikkeling direct van zo’n 8.000 medewerkers groot genoeg voor jouw ambities invloed is op de snelheid van je boot. Zo werkt het ook met een startfunctie bij SNS REAAL, de Starters en klein genoeg voor een persoonlijk contact. Ambitieuze en ondernemende starters op hbo- innovatieve en snelgroeiende dienstverlener in bankieren en wo-niveau bieden we naast een afwisselende functie en verzekeren. Waar je als starter bij een hele grote een uitstekend salaris en goede doorgroeimogelijkheden. organisatie vaak een vaste plek krijgt met specieke Aan jou de keuze: laat je de koers van je carrière door Edwin Lohmann tegen Mark Timmermans: “Dat is nou exact het verschil tussen jou en Ramon: ik ben oprecht.” werkzaamheden, kun je je aan boord bij SNS REAAL in de anderen bepalen of sta je liever zelf aan het roer? Kijk voor volle breedte van onze organisatie ontwikkelen. Dat geldt meer informatie over de startfuncties en traineeships van Stephanie van Breda: “Die gaan wel heel vaak op vakantie.” Whitney Pattinaja: “Nee, vacancy betekent vacature!” voor onze nanciële, commerciële en IT-functies, maar SNS REAAL op www.werkenbijsnsreaal.nl. Bas Verheul vraagt Anouk naar haar achternaam. Frans probeert te helpen met een ludieke opmerking: “Niet staan, maar…” Bas: “Lopen!” Linda Vos: “Als ik over de sloot spring, doe jij dat dan ook?” Guido Hendrikx, terwijl hij de opdrachten van Calle van de Wiel voor het vak Stochastic Models bekijkt: “Dit is memory voor gevorderden.” Je leert meer... Stefan Damen vraagt tijdens het Mariokarten aan Ramon van Schaik: “Is deze goed, die Browser?” 60 Nekst 1 - November 2009 Het doel is om jou te overtuigen van een stage bij ons. Ga naar aegon.nl/stages Eerlijk over werken bij AEGON.