Cursor 17 - year 57

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17 30 April 2015 | year 57

Biweekly magazine of the Eindhoven University of Technology For the latest news: www.cursor.tue.nl/en and follow @TUeCursor_news on

Care robots TU/e beat German robots at German Open 26 April - The TU/e care robot team won a gold medal at the RoboCup German Open in Magdeburg. Their robots AMIGO and SERGIO compete in the @Home League. The goal of this robot sport is to speed up the development of independent care robots that can help people in need, so they can stay in their homes independently for longer. The home teams of the universities of Koblenz and Bielefeld won second and third place respectively.

TU/e team to bridge with a build Da Vinci span of 50 me 21 April - A grou ters p of students fro m TU pa

/e plan to build per fiber. The 10 an ice bridge re 0 meter long br inforced with idge, based on will have a span a design by Leon of 50 meters - th ardo da Vinci, e longest open succeeds, the br span ever built idge will beat from ice. If the ta the earlier world sk record set by a group of TU /e students in 2014 with a 30 meter ice dome. The bridge is bu ilt by spraying thin layers of wa ter and snow onto a large infla ted template, and then letting it freeze. Layers snow an d water are sprayed alternat ely, with ten percent paper fib ers. The mix is then immedia tely absorbed by the snow, an d it all freezes together.

In memoriam It is with deep regret and sadness that we inform you of the passing of Giuseppe Melpignano, PhD candidate at the Department of Mechanical Engineering. He died in a car accident on Saturday, April 18. His girlfriend Kiki Frencken died in the accident as well. Giuseppe studied Mechanical Engineering at TU/e, and started his PhD track at prof. Jaap den Toonder’s Microsystems Group in 2013. For the STW project Dynaclean he worked with scientists of the TU/e Department of Chemical Engineering and Chemistry, the University of Groningen, and Philips Research to develop smart materials for switchable self-cleaning surfaces, inspired by the Lotus leaf. The materials are used in outdoor lighting, solar panels, hospital applications, and personal care products.

and tuecursor on

Supermarket Flux opens after summer 22 April - The opening of the very first TU/e campus supermarket in Flux is delayed by several months. Spar University wanted to open this month, but a few constructional changes have to be made to the location still. The manager now hopes to open upon the start of the new academic year. Spar University works with selfcheckout only. Customers scan and pay for their products without a cashier in sight. Opening times are still being discussed, but the manager hopes for ‘eight to eight’ (possibly nine) on weekdays, and on the weekends in exam periods.

Eindhoven PhD candidates finish first 16 April - PhD candidates at TU/e are the fastest when it comes to completing their PhD research, figures provided by VSNU show. The average Eindhoven PhD candidate completes their PhD track in 54 months, where four years should be the standard. Over seventy percent has their PhD degree after five years. Eindhoven tops the list here, too. Looking at the other universities of technology, Twente follows in the wake of TU/e with their PhDs spending an average of 55 months on their research. Becoming a doctor in Delft takes considerably longer (62 months).

More news on www.cursor.tue.nl/en

Giuseppe Melpignano

The group remembers him for his unfailing enthusiasm, his great empathy that made him a unifying factor within the group, and his innovative ideas and research plans. Giuseppe was an example of the perfect colleague. He will be dearly missed. May Giuseppe’s family, friends, and colleagues find strength in this difficult time. Prof.dr.ir. Jaap den Toonder, Chair Micro systems, Mechanical Engineering



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And how are things in Montpellier? More and more TU/e students go abroad for their studies to follow courses, internships or a doctorate path. What is it like to find your way in a new country? Students tell their stories.

From a clear blue sky a bright and friendly sun smiles down on the Mediterranean metropole. It is about twenty-five degrees Celsius and a significant part of the population is tanning at the nudist beach in preparation for the vibrant summer. The remainder can be found on one of the city’s thousand terraces nipping at their pastis in celebration of the countless happy hours. So don’t the French work? Usually with passionate devotion, but not right now because it’s a holiday period. It can be said that the contrast between this culturally and historically valuable city and Eindhoven is striking. It demands the flexibility to adjust to lower wine prices, richer coffee and a wider variety of available cheeses. No wholegrain sandwiches but baguettes, no glass of fresh milk but a cup of orange juice and peanut butter? Unheard of. Eating out is something for after half past seven in the evening and days that don’t involve chocolate croissants are futile. And the people? Courteous and reputable. They stroll through life elegantly, neatly dressed in accordance with the latest fashion. With free entry for students for festivals, concerts and expositions they demonstrate their deep appreciation for art and culture. They travel everywhere by car or tram, but make up for their high wine- and cheese consumption through excessive jogging.

R masteernée van K ena Buildsitudent Aerm ng and chitecdteu, Planni re, ng

But how does the Erasmus student from Eindhoven cope with this new habitat? Shortly upon arrival she found the accounts she had heard to be correct: the French really do only speak French. With no way of sharing her knowledge with her environment and vice versa, she kept her surroundings under close observation. At this moment however, she happily converses in French and knows how to get around, though only by bike because let’s be honest, a bit of national pride never harmed anyone.

Would you also like to write an article about your time abroad? Please send an email to cursor@tue.nl.

Read more stories online: www.cursor.tue.nl/en

Life after TU/e Name: Petr Kosnar Place of Birth: Czech Republic Age: 29 At TU/e: 2010 - 2014. Master’s program Human-Technology Interaction. Then, I’ve spent another two years at the User-System Interaction post-graduate program, focusing on user-centered design and research . Current position: I work as a freelance designer and researcher of digital products, with a recent focus on smart homes and automotive domains. How do you reflect on your time at TU/e? I was interested in studying Human-Technology Interaction, and TU/e has a great reputation in this field. It was a good choice. I am very happy with the high quality of education here. During my studies I have met many wellrespected experts in their fields, and gained a lot of professional experience regarding technolo gies, methods and approaches, which have all helped me in my professional life. From a personal point of view: I made plenty of amazing friends from all around the world. Was it difficult to find a job? Yes and no… I’d say that the most important part of the professional profile is your network. Talk to people about what you did, what you currently do, what you want to do in the future, and help others and ask for help when you need it. That way, the job eventually finds you. That’s how it happened for me. Did you consider staying in the Netherlands? Not really. Eindhoven is a great place to study and accelerate your professi onal career, and I recommend everybody in my field to go here for the experien ce. But if you love nature, outdoor sports and good cuisine as much as I do, you could never consider the Netherlands as your possible homeland. I moved back to my beloved Prague after I graduated, and I am very happy to be back here. What happens to international students after they graduate from TU/e? Do they go job hunting in the Netherlands, pack their bags and explore the world, or return to their home countries? International TU/e graduates talk about their lives after TU/e.

What advice would you give the current students? Work hard, talk to people, help others if you can, and be nice! Karma is your best Something else you would like to mention? Proost!

friend.


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30 April 2015


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The

st 21

Century Engineer

“TU/e has a role in creating not only engineers, but people who have a critical perspective on the world they live in. We have a good academic level at TU/e but in a more general sense - helping students to reflect and think critically, for example - that’s an area we could improve in.”

As a psychologist at a technical university, Professor Wijnand IJsselstein (Department of Industrial Engineering & Innovation Sciences) has perhaps a different view on how we could better educate engineers. He advocates the idea of broadening their academic horizons in order to create more critical, creative and socially-savvy graduates. And he’s not alone in this opinion. In many places, including TU/e, engineering education is undergoing a quiet transformation. While a mastery of math and science is still paramount, engineering students are increasingly encouraged (or even required at some universities) to take humanities classes or more fully develop their ‘soft’ skills. And a quick perusal of job ads reveals that many companies are hoping to hire engineers who can effectively interact with clients and co-workers as well have a bit of insight into how their products will ultimately be used. “Much of what we design”, continues Professor IJsselstein, “needs to take into account the end-user. How will these products fit into their lives? What are their abilities? You run the risk of designing something that is a mismatch with the end-user if you don’t consider these questions.”

Engineering for humans Remember the VCR? (Video cassette recorder for you young-ins or the videorecorder as it was known here in the Netherlands.) Sure, the technology is now utterly antiquated but it’s a classic example of an engineering misstep - at least when it came to the interface. The VCR offered the user various options. First and foremost, you could play your pre-recorded, VHS tapes in it. That was the easy option; just pop in a tape, hit play and… voila!... Dirty Dancing or Indiana Jones was yours to enjoy. But things got murkier from there on out. You also had the option to record programs from broadcast TV via the VCR’s programmable clock, negating the

need to rush home from the pub so you wouldn’t miss Friends. However, legions of people had either a) absolutely no idea how to use this function or b) it took them dozens of hours or the help of a more technologically-astute neighbor (probably an engineer!) to figure it out. What’s the moral of the story? What seems simple, obvious or necessary to an engineer doesn’t always translate to us normal folks (and vice versa). And this example begs the question: can we avoid future engineering blunders like the VCR interface by changing how we educate engineering students? Els van Dijk, 28, is a PhD candidate in Human-Technology Interaction and has experienced this phenomenon more recently. Before re-entering academia, she spent six months working in “the real world” as a user experience designer and, as her current area of expertise would suggest, she has an interest in these sorts of issues. She explains one such discrepancy at her former job: “We designed an app with tabs you could swipe through with dots on the bottom to let the user know which page they were on. But then there wasn’t enough room for those dots when our design went to the engineers. Instead of talking to us, they just decided to remove that feature. But that one small feature made our app more user-friendly! It came down to a lack of understanding between the two groups. If there’s one thing I learned from the work world, it’s that communication is really key.” During her internship in Sweden, Department of Industrial Design master’s student Doenja Oogjes, 23, worked on an EU project to introduce district heating systems in the UK - a common form of centrally-controlled heating in Sweden. Her group wanted to understand how end-users would react to the new system and says it was a struggle to convey the importance of that idea. “The engineers were like ‘But they won’t have any control over the system. Why do we care what they think?’ In the end, Oogjes’s group

conducted an independent, small-scale pilot and their results provided some valuable insights, “It turns out that people feel very differently about heating in the UK. In Sweden, they value their clothing. They know how to dress better against the cold than people in the UK and that affects how people feel about the warmth of their homes. When the engineers actually saw our methods and results, they were really interested. Now, they want to do another pilot. But it took a long time to convince them. It would be good if everyone had the same perspective on these things. To me, it’s obvious that you should always consider the human and the humanity of the end-user.”

A whole new engineer? But how exactly do you groom a generation of engineers who will “consider the human?” In their new book, “A Whole New Engineer: The Coming Revolution in Engineering Education,” American professors David E. Goldberg and Mark Somerville argue that most current schools of engineering too often produce graduates that lack creativity, imagination and people skills: “Not only does engineering education tend to emphasize logical/mathematical intelligence to the exclusion of other ways of knowing, but also it operates with a fixed mind-set.” The authors state that previous efforts to reform engineering education have neglected addressing one key question: What are the underlying values in engineering education? Without questioning these values, according to Goldberg and Somerville, any changes in pedagogy or content will ultimately fail in creating real change in how engineers are educated. They suggest four core values or pillars for reform: trust, courage, connection and joy. ‘For years, engineering education has focused on teaching the right stuff, in the right way. It’s a very scientific approach, and both the content and the teaching approach

matter. But just as important (although much less visible) are the implicit values that we as educators bring into the classroom. The 21st century demands a new kind of engineer, a new kind of engineering education, and a new set of educational values.’ It’s a concept echoed by Professor IJsselstein’s ideas on how to train more well-rounded engineers: “I think everyone could benefit from taking other courses - a philosophy of science class or epistemology, for example. These courses create a layer of perception that is good for your personal development. There’s great value in altering your perspective because it makes you a better scientist. You learn that there isn’t one single truth and that we are all subject to our own biases and prejudices.” And, of course, these sorts of changes are taking place right here at TU/e. In a recent interview with alumni magazine Slash, Lex Lemmens, Professor of Academic Science and Engineering Education, discusses the impulse for creating the university’s Bachelor College. “It was not a gamble, but rather the result of good thinking, studying the literature and a look at best practices. We saw good examples at MIT and the University of Utrecht. After WWII, HASS (humanities, arts and social sciences) education was introduced at MIT… this was the inspiration for the USE (User, Society, Enterprise) subjects for TU/e’s Bachelor College. We want our engineers to know how to apply their discipline in the context of users, society and companies.”

Client-focused, creative, entrepreneurial Developing non-technical skills and knowledge might not just be good for educating better engineers, but those students who expand their outlook will undoubtedly have an edge in the job market. Gerton

van Rooij is the global director of engineering for TASS International - a spin-off company of TNO that provides knowledge and software to the automotive industry. As a long-time manager, he looks for some specific things when hiring new engineers. “I’ve had a lot of students come with their resume in hand and I always ask them one basic question: who was happy with your thesis project? They usually say themselves - ‘I was very happy with what I did’ - and that answer tells me a lot about that person’s focus. I would imagine they’d also mention the company that sponsored their thesis project. What about the company, your client? Are they using what you created? When I ask that question, I almost always hear ‘Ummmm, I have no idea.’” Van Rooij says he’s also impressed with a go-get-‘em attitude: “I met this Chinese engineer and she wanted a job at Ford. She really put the pressure on them by saying ‘You’d better hire me fast or the other guy will hire me. She even got her colleague a job! Now, that’s an engineer who understands how to do business. A lot of engineers wouldn’t be able to be that entrepreneurial.” As a second-year master’s student, Doenja Oogjes is now tackling the daunting task of finding a job. Luckily, she’s found that some of her inherent talents and skills skills that are considered on the soft side of science - could be helpful for in her future career path. “A lot of people in my department have the creativity and ability to understand different areas of technical expertise and then link people together who would otherwise find it difficult to communicate with each other. I never thought it as a valuable skill until I got into my internship project. It’s intuitive for me and I didn’t realize I had it until I got around people who don’t. Now I know it’s a special ability and one of my selling points.” Text | Angela Daley Photo | Bart van Overbeeke


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30 April 2015

Departing Rector Magnificus Hans van Duijn:

“I didn’t think a merger between Delft and Eindhoven was a good idea” ‘I was afraid that we’d bottom out’

He was TU/e’s longest-serving Rector Magnificus and in the ten years that Hans van Duijn was at the helm, the university underwent some turbulent changes. He admits that there’s little time for rest and reflection in the education world. In recent years, he’s headed two major education projects with the aim of educating the engineers of the future. During the university’s dies natalis on April 30, he’ll pass the torch to his successor, Frank Baaijens.

When he took office as Rector Magnificus on 1 April 2005, Van Duijn advocated a sense of calm in academia and at his university. He felt that the continuous changes in the academic world had created too much hassle for students and staff. However, the alumnus of the Technical Physics Department also hadn’t been idle the previous five years. He became a professor of applied analysis and then just four years later, he was appointed to be the Dean of the Department of Mathematics and Computer Science. A year later, he moved up to rector. During the previous years, he earned his PhD in Leiden and he had worked in Delft and at the Amsterdam Centre for Mathematics and Informatics. During his education at TU/e, he was charmed by mathematics and continued to teach even during his term as Rector Magnificus. Upon taking office, Van Duijn says that he encountered a worrying situation in certain courses. “They attracted few students, had a high dropout rate and the students that did make it through took an awful long time to do it”, explains Van Duijn. “I was genuinely worried that the Ministry of Education, Culture and Science would say that certain small courses of study would have to merge with each other. We had to modernize our university and the students had to adapt their study behaviors.” In a controversial interview with university magazine Cursor and during his speech to open the new academic year, Van Duijn threw the cat among the pigeons. “I had to do it because I was really afraid that we’d completely bottom out. It took a while before people realized what

was going on. Some people felt it was proof that we just offered difficult courses. My criticism on the inadequate level of mathematics at this university made some program presidents furious. But I was convinced that our entire educational system here needed to be overhauled.”

“I don’t think there’s anything ‘high school’ about investing more time into your studies” Hard work and the dedication shown by many taskforces and staff made it possible to introduce a new educational model in September 2012: the Bachelor College. The new model offers students more choice and the hope is that this change will make the programs more attractive to young women. The Graduate School will also begin during the coming academic year which will encompass all education beyond the bachelor’s degree. In addition to the master’s degree, that includes design and PhD programs. “At the time, we put a lot of pressure on introducing the Bachelor College quickly”, says Van Duijn. “Together with Professor Lex Lemmens, who later became dean of the Bachelor College, we really put the gas on. Otherwise, we would’ve lost another year getting things set up. Lex was pure gold for me and the organization during the implementation of this process. As dean, he’s responsible for the five basic


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subjects given to all students and he also looks at, for example, how much use students make of their right to choose in the curriculum and to what extent they exercise this right.” Looking back on the introduction of the Bachelor College, Van Duijn calls it “an exciting time because it was quite a risk to start such a radical operation. Our question was: will it succeed? And then we had to wait to see if it would work and whether it would catch on. Would the students study better with this model and could our teachers change? Because we were asking a lot of them. They had to rebuild courses and to get started with, for example, mid-terms and clickers in the college rooms.” Didn’t the new system make TU/e’s education too much like high school? “We did get that criticism sometimes from some of the better students - students who could easily plow through their studies and did a lot on the side, too. But in general I think many students have benefited. And putting a lot into your studies doesn’t fall under the heading ‘high school’ to me. I experienced first-hand that it’s not easy to make a mid-term. You have to grow into this task. But we also have to keep in mind that our staff’s workload doesn’t become too much. We really are asking a lot from them.” Van Duijn wants to acknowledge another project that also took a lot of time and energy - namely, the compulsory Institutional audit from the OCW. This test allowed the board to show the government that they were in control of what was happening at the university. “In 2013, we worked hard to achieve a good result on this test and it was sometimes an eye-opener for us. So much has changed in the outside world as far as legislative requirements and demand for examinations and other matters. This whole operation was being handled on top of everything else we were doing. That made it pretty tough.” What does Van Duijn think of the criticism expressed by some people that universities have become over concerned with efficiency? “It’s true that today’s academic world does approach everything through numbers. Look at the performance agreements that universities have to make with the Ministry of Education, Culture and Science. It’s a sign of the times and you have to participate in it. I think we strike a nice balance at our university. We offer education on a small scale, with a good ratio between the number of students and teachers. If I talk to our students, I don’t get the impression they’re really involved with what’s going on in Amsterdam. [The occupation of the Bungehuis and Maagdenhuis by UvA students who want more of a

say in their university.] We talk to our students regularly, certainly about how these major adjustments might be affecting them. It helps, of course, that we don’t offer degrees with a large number of students such as law or psychology but there’s also definitely still room for growth here.” As rector, it goes without saying that he’s also responsible for the university’s research endeavors. Is he satisfied with developments in this area? “As far as that’s concerned, Christmas 2013 was a really great year for me. We had brought in Jan Mengelers, who was chief executive of TNO, as the new chairman, we’d scored extremely well in NWO’s Gravity Program and we’d started our Impulse Program, through which we added 250 PhD positions by cooperating with the business community. It was all so well-balanced. After the holidays, DIFFER opened its doors here on campus and we created the Institute for Complex Molecular Systems with Professor Bert Meijer. I’m really proud of it but you really have to stay focused to keep up the good work. Otherwise, it’ll elude you.” During his time as Rector Magnificus, the collaboration with Delft and Twente also became more solid. “Within the 3TU Federation that came about in 2007, we were able to achieve a lot and also to get financial support for our projects from the OCW. The lines of communication are short between the three institutions and we easily agree on who should do what and if we can complement and strengthen each other in various areas.” While he’s on the subject, Van Duijn says that a merger between Delft and Eindhoven was in the works around the time of Chairman Amandus Lundqvist’s departure in April 2010. “The Supervisory Boards - both of which were very focused on the commercial prospects of a merger - were very charmed by the idea and the possibility was seriously considered. But I didn’t think it could happen. Two institutions, so different in size and with the same areas of focus - I didn’t want to be responsible for that”, he says smiling broadly.

“We’re not working towards a large Brabant university” At the moment, he sees the University of Utrecht, and its associated teaching hospital, as TU/e’s main university partners. “We’re working jointly on at least

five research lines and I see some very good opportunities there for the future.” Last year, Van Duijn also revealed that TU/e and Tilburg University are looking to jointly create a Graduate School for Big Data & Entrepreneurship in Den Bosch in 2016. Will we see more of these sorts of collabo­ rative projects in the future? “If you have a complementary outlook with another institution in terms of education and research in areas such as Big Data, then I think you’ve got something really valuable there. In this case, we have that with Tilburg. In addition, we’re also working with Maastricht on the Chemelot Campus in Heerlen. Beyond that, there’s currently nothing more like these projects in the pipeline. We really aren’t trying to create one big Brabant university, you know.” And, of course, there’s one final question that we have to ask now that TU/e’s DNA book has been published. What does he think the DNA of TU/e is? “I would say, TU/e’s DNA is the care we take in offering quality and the care we put into our courses. Those things are never up for discussion. Just look at how carefully we handle appointments. In addition, I’d say it’s also our institution’s integration in Brainport. Part of our DNA, are also the short lines of communication between teacher and student and between staff and management. You can see that reflected in the pedestrian bridge system all over campus. What’s new is that we’re becoming increasingly more international in terms of staff, students and doctoral candidates. That was quite different ten years ago. I also hope that the campus will become livelier, with lots of activities after 6pm. Hopefully, permanent housing on campus will help make that happen.” Van Duijn wants to remain active at TU/e after finishing his term as rector. “I want to put significantly more time into my research. I’ll join Professor David Smeulders’s group in the Mechanical Engineering Department to make a contribution in mathematics. I’ve also been invited to teach by universities in Lyon and Austin, Texas. And there are also administrative tasks to take care of but those are going on the backburner.”

Interview | Han Konings Photos | Bart van Overbeeke


34 | Research

30 April 2015

4 burning questions

Brian Janssen | Biomedical Engineering

Regulating protein activity with DNA

1 ’s on f your o r e ov the c rtation? disse What

2 Wh a peo t do y ou t ple a t par ell whe n t abo ut y they a ies our s rese k arch ?

1 | cover The front of my dissertation shows an antibody (Y-shaped protein) forming a complex with a blocker (consisting of a DNA helix, among other things), rendering it inactive. The antibody is activated only in the presence of a trigger: only then can it bind to the cell (back cover). My dissertation focuses on controlling the activity of antibodies, hence my cover illustrations.

3 What person, technology, or device has been essential for your research?

4

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Antibodies are proteins that are used more and more often for the treatment of diseases like cancer and chronic inflammatory reactions. One of the main disadvantages is that these therapies come with side effects, since the target protein is present in healthy cells as well. My study focuses on further developing new concepts that can control and selectively activate the antibodies by using a DNAbased blocker. So, we’re not using DNA as a carrier for genetic information but rather as a molecular building block.

3 | essential

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The HPLC (High Performance Liquid Chromatography, a device for separating chemicals, ed.) has been indispensable for my research. I have made a bunch of peptide compounds, and for that it’s crucial those constructs are absolutely pure.

4 | society benefit We are getting better at controlling antibody activity. We’re also working with therapeutic antibodies, and recent cell studies are promising. Still, depen­ ding on the success of further studies, it might be another ten years before this strategy is implemented in clinics.

(edited by Tom Jeltes) Photos | Bart van Overbeeke


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Thinh Hong Pham | Electrical Engineering

Battery lifetime in hybrid vehicles 1 | cover The yellow ‘small’ truck on the cover is an innovative hybrid electric truck. The energy flows and signals surrounding the truck are utilized to minimize the fuel consumption and reduce CO2 emission. The symbols ‘lambda’ and ‘beta’ are crucial ingredients in my control algorithm to achieve the ultimate goal: minimizing fuel consumption while satisfying the battery life requirement in the hybrid truck.

2 | parties Hybrid electric vehicles (HEV) are emerging as a leading technology in road transport to reach a target: a 20% reduction in CO2 emissions by 2020 compared to 1990. The battery is a key component in HEV. Short battery life may destroy the business case, especially for hybrid trucks, which require a high initial investment. So, in HEV, beside minimizing the fuel consumption and CO2 emission, battery life should be sufficiently long. This has led to our ‘Integrated energy and battery life management in hybrid vehicles’ research.

3 | essential Optimal control theory and the Equivalent Fuel Consumption Minimization technique are used extensively in my research to optimize the HEV’s operations. Furthermore, the close collaboration with the colleagues at DAF truck N.V. and the guidance of my supervisors have been indispensable for my research.

4 | society benefit The increase of CO2 emission is a critical issue for mankind, as it causes global warming. Our research contributes to a reduction in CO2 emissions, which plays an important role in saving the environment.

Judith Donda | Applied Physics

Predicting cooling at night 1 | cover The cover of my thesis is a picture taken (by my husband Gunes Nakiboglu) from the parking of ASML one early morning. We can see mist over the field next to the highway. It was taken after a typical cold night with a clear sky and weak wind, and the fog enables us to visualize the stratification of the atmosphere.

2 | parties I studied the collapse of turbulence in the atmospheric nocturnal boundary layer, which extends from the ground to approximately 200 meters high. During the night, the dynamic in the boundary layer is driven by the cooling of the surface. When the wind is strong and the sky is overcast, turbulent mixing is maintained in the boundary layer, which limits the cooling a bit. However, when the wind is weak and the sky is clear, the mixing is much weaker and the cooling much stronger. So when we have a clear night with weak wind there is a high chance that the turbulence will collapse and the air temperature will drop steeply.

3 | essential In my PhD study I found a way to predict this collapse of turbulence with Direct Numerical Simulation (DNS) based on the work of my supervisor Bas van de Wiel, and in collaboration with my fellow PhD student Ivo van Hooijdonk.

4 | society benefit A better understanding of the nocturnal boundary layer will lead to a more accurate prediction of road frost, dense fog events, and smog formation. Clear and calm nights during spring may cause serious economic frost damage in agricultural activities, in particular in fruit orchards.


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A Night @ th

e Opera

Let’s face it: opera is not dealings with. an art form yo evening you Well, time for a change u have daily w ill participate in learn more about this! During this be able to en an opera quiz, join a singform of art, ‘The Telephonjoy a mini-opera of half an -along AND e’. hour called Entrance fee: students for free, others pa y 5 euros

uur,

3:35 mei, 12:40-1 -campus 3 1 g a d s n e o W orium, TU/e l, Audit Blauwe Zaa

Peter R. de

Vries

denken a niet weg tegevoel voor ijn b is t ch zi . Zijn Zijn ge landse buis jn minst omstreden. zi van de vader h p o is d ei rd of ­ rechtvaardig t, is er altijd wat gebeu ctieve ra ek te re in sp it ij d h Als spel. In et h p misdaado at ts w t ie staat er je aan de weejft en wat hij m ko a m program eter R. de Vries dri et TU/e journalist P gt. In samenwerking m n re gb ee tew Security. : gratis Entreekosten

Wednesday

um

20 May, 12h:40-13h:35, Blauwe Zaal, Auditori

Healthy buildings

nt. indoor environment is importa our time indoors, a healthy As we spend around 90% of dge about the effects of the indoor environment on the health. Yet despite increasing knowle e to build homes and offices that are harmful to our tinu con we gs, . ldin ope bui 5 Eur users of ference Healthy Buildings 201 This lecture is part of the con Event language: English Entrance fee: none

Monda y , May, 20 Tuesday and W h.0 De Zwa rte Doo 0-22h:00, film ednesday s, TU/ house Kingsm an: the e campus

20

18

19

se

cret se This film rvice that rec tells the sto the age ruits an unre ry of a super-s a globa ncy’s ultra-cofined but prom ecret spy org Based ul threat emergmpetitive trainising street k anization id e pon a g in raphic s from a twiste g program ju into novel b st as d te Event la c h y Mark Millar. genius. Entranc nguage: Eng li e fee: s tudentesh with Dutch su n 3,50 e uros, o btitles thers 7,5 0 euros

Wednesday

20 May, 20h:00, Gaslab, TU/e campus

The Rhythm of Brazil

Brazil will come to life tonight! Dr. Leiden University) talks about BrazMarianne Wiesebron (Senior Lecturer at to a student who has lived in Rio. Toil as an upcoming next world power. Listen ture yourself. This program is prod top it off, experience a bit of Brazilian culuced jointly by study association Inte and Studium Generale. rmate Event language: English Entrance fee: none


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