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Graduation of Chris van Hulten

Graduation of Chris van Hulten 30 November 2021 13:00 till 15:00 - Location: CiTG - Lecture Hall F - By: Webredactie Recognizing critically damaged quay wall structures using a three-dimensional numerical model Professor of graduation: Dr.ir. M. Korf Supervisors: Ir. P.A. Korswagen (TU Delft), Ir. M.J. Hemel (TU Delft), Dr. Elisa Ragno (TU Delft), Ir. R. Roggeveld (Sweco NL) Many quay walls in Amsterdam have surpassed their structural lifetime and have started showing signs of damage. The city of Amsterdam is currently tackling the problem and have published a plan of action. This plan includes the renovation of hundreds of kilometres of quay walls. Given this enormous amount, it is necessary to prioritize certain quay walls over others based on the severity of their damage. Some quay walls have reached total collapse, of which the most recent case involves the "Grimburgwal" quay. The municipality has no accurate view of the current condition of quay walls in Amsterdam. On top of that, the vast majority of quay walls have not been assessed on their safety. It is known that the most vulnerable quay walls types consist of masonry walls, supported by wooden foundation structures. Given that the quay wall renovation project requires prioritisation, it is necessary to gain more information on how the most vulnerable walls are recognised. Preferably, a method should be developed in which only visual cues given by the masonry wall are required, as it is quick and relatively cheap. To gain information on what these visual cues might be, a three-dimensional finite element model is made to run simulations on possible behaviours of quay walls. In this thesis, it is attempted to model a quay wall as realistically as possible. Several different deterioration conditions will be applied to see how the masonry responds. The 3D model is built using a parametric model coded in Python. This code can be used to run simulations in the finite element software DIANA FEA. Many behavioural aspects have been incorporated into the model, with the purpose to make the model more realistic. The model consists of a masonry wall, planks on which the wall rests, and supporting piles. The behaviour of each component has been applied in the code and have been obtained through other literature and European norms. The model is loaded by simulating the weight of the soil and its effect on the quay wall structure. The masonry is simulated using a smeared cracking model (macro-model). Long-term deterioration of quay walls is simulated by changing the material properties of each respective component. This thesis focuses on three deterioration conditions: - Non-uniform pile degradation: application of broken piles, simulated by removal of those piles from the model. This is subdivided into two categories: removal of entire rows (a row consisting of a front, middle and end pile) and removal of front piles only. - Non-uniform soil removal: formation of soil pits at the foundation level, which result in decreased bedding around the foundation piles. - Uniform degradation: application of uniform deterioration along a stretch of quay walls. The simulations yield fairly consistent cracking patterns, in which the same crack fields appear in each simulation depending on the chosen case mentioned before. Displacement patterns are also documented and presented in all cases. The quay wall model is able to display in-plane and out-of-plane movement simultaneously. The effect of each parameter on the crack/displacement patterns are analysed as well. This includes masonry and wood quality. The results show that the largest in-plane settlements are reached by damaged piles, while the largest out-of-plane displacements are caused by a loss of soil bedding around the piles. The results can be used to provide better insight on how quay walls with poor quality present themselves in real life and what their cause might be. This research contributes to the possibility of improving recognition of quay walls which find themselves in critical condition, which can then be prioritized for renovations. For future research, it is recommended to see whether time-dependent simulations can be run, to see if it makes a difference in the outcome of displacement/cracking patterns. Another important recommendation is to look into deterioration rates of materials, which could be used as another indicator for critically damaged quay walls.

Enso

For us human beings in the West, clothing has become a disposable product that provides us with protection from the environment and displays our sense of style. But, the future of clothing is about to change with the rise of smart textiles. Enso is a blouse designed for female employees that work in office environments aged 25 to 35 that are not able to relax from work. Enso provides an on-the-job recovery experience that can be accessed whenever the wearer feels like it. Kaspar Jansen +31 (0) 152786905 k.m.b.jansen@tudelft.nl Publications Room B-3-170 Graduate Student Sacha Franken Researchers Prof. K.M.B. Jansen (chair) Ir. E.J. Jepma (mentor) Ir. M.H. Sonneveld (mentor) By closing the garment the wearer can control when she wants to start the relaxation process The small piece of fabric at the bottom of the collar functions as a fidget tool. A heartbeat sequence is felt on the skin to keep the wearer calm and focused while working. The wearer can start the breathing exercise by caressing the left sleeve. The sleeve lights up and the collar moves up and down in a breathing sequence at rest. The Making Of The Making Of

Kobus Kuipers wins Physica Prize 2019

The Physica Prize 2019 has been awarded to Kobus Kuipers, not only a pioneering physicist but also someone who is strongly committed to outreach.

New PowerWeb book: Intelligent Integrated Energy Systems

This book presents research results of PowerWeb, TU Delft’s consortium for interdisciplinary research on intelligent, integrated energy systems and their role in markets and institutions.

DDMC 2008

Program for Delft Days on Magnetocaloric (DDMC) October 30 (Thursday) 2008 9:30-9:45 Welcome address by Dr G. Degen, BASF Future Business, Ludwigshafen Workshop Session I 9:45-10:15 Magnetocaloric materials not only for cooling applications, E. Brück , TU Delft 10:15-10:45 Entropy contributions in conventional magnetocalorics and tricritical metamagnets, K. Sandeman , University of Cambridge 11:00-11:30 Improvement of magnetocaloric properties toward high efficiency cooling in La(FexSi1-x)13 by hydrogenation and partial substitution, A. Fujita , Tohoku University 11:30-12:00 Determination of magnetocaloric parameters through magnetic and thermodynamic methods in first-order transitions, R. Burriel , University of Zaragoza Workshop Session II 14:00-14:30 Model of layered AMR, K. Zimm , Astronautics 14:30-15:00 Magnetic refrigerants obtained by novel processing routes, J. Lyubina and O. Gutfleisch, IFW-Dresden 15:15-15:45 Magnetocaloric and Shape-Memory Properties in Ferromagnetic Heusler Alloys, A. Planes , University of Barcelona 15.45-16.15 Magnetocaloric properties of reactively sintered La(Fe,Co,Si)13, M.Katter , Vacuumschmelze 16.15-16.45 Determining the magnetocaloric effect in hysteretic materials, L. Caron , TU Delft 16.45-17.00 Evaluation of Alternative Refrigeration Cycles for Domestic Refrigeration - Performance Metrics and Expectations, E. Oguz, Arcelik A.S. 17.00-17.15 Magnetostriction - a way to detect lattice contributions to the magnetocaloric effect in CoMnSi based materials, A. Barcza October 31 (Friday) Workshop Session III 9:00-9:30 Pressure Dependence of Magnetocaloric Effect of MnAs1-x Sbx and La(Fe1-x Six )13 , H. Wada , Kyushu University 9:30-10:00 Pressure effects on the thermal hysteresis in MnFe(P,Ge) compounds O. Tegus , Inner Mongolia Normal University 10:20-10:50 An Isothermal Calorimeter for direct measurement of magnetocaloric properties, L. Giudici , INRIM Torino 10:50-11:20 Advanced modeling of Active Magnetic Regeneration, K.K. Nielsen , Risø 11:20-11:50 Global warming and refrigeration: how we can make all a difference? A. Pastore , Camfridge Other editions DDMC 2015 DDMC 2013 DDMC 2011 DDMC 2008

SuperGPS

The TU Delft Solar Boat Team presents the design of the first Dutch solar boat for the open sea

For the first time in Dutch history, the TU Delft Solar Boat Team is taking the step to develop a solar boat for the sea. It will be a trimaran, a boat with three hulls, which will completely control the ocean on solar energy. On Tuesday evening, January 15, the team presented the new design of the boat. With this boat, they plan to win the world championship for solar boats in Monaco this summer and to break a world record by crossing The Channel as the fastest solar boat in the world.

Oceanograp­hers in the wake of My Little Ponies

The shipping crates that fell from a container ship in the North Sea last week could be a blessing in disguise for oceanographers.

L.J.N. (Luuk) Brederode

Open menu Staff My PhD Project Incorporating realistic congestion effects into large scale strategic transport models Luuk Brederode Luuk Brederode PhD Researcher +31 (15) 27 84977 l.j.n.brederode@tudelft.nl Room: 4.14 Additional information

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The Educator Newsletter | September

Discover inspiring stories, developments, (training) activities, and other reads about Education.

TU Delft helps Maastricht air traffic controllers make safe choices

In March 2024, the EUROCONTROL air traffic control centre MUAC in Maastricht launched a new software tool that allows their air traffic controllers to make faster and more intuitive decisions about air traffic in their area. The tool was developed by MUAC , but is based on research into ecological interfaces by colleagues Clark Borst, René van Paassen and Max Mulder at Control & Simulation.

New ‘captains’ in the cockpit of Rotterdam The Hague Innovation Airport

On 1 September, Jos van den Boom, Lennard Verhoeff, and Victor Rijkaart joined the new executive team of Rotterdam The Hague Innovation Airport (RHIA).This trio is preparing to usher in the next phase of RHIA. A period in which, community-driven, privately led and publicly supported, they want to make visible and where possible accelerate the transition to a cleaner, quieter and smarter future of aviation.

Systems Workforce Summit 2024 at TU Delft

As the need for systems engineers is rising, TU Delft and NXTGEN Hightech are organising a unique global event on systems engineering on October 8 and 9, 2024. Thoughtleaders from organisations such as Airbus, ASML, MIT and NASA will discuss the future needs of the Systems Engineering workforce tackling the major transformations in society.

The Systems Workforce summit

TU Delft and NXTGEN Hightech will organize the unique worldwide Systems Workforce Summit at the TU Delft on October 8 and 9, 2024. Reserve your spot now to attend this unique summit! This global summit will address the future of systems engineering in industries like energy, health, aerospace, semicon and transportation. Skilled systems engineers are scarce and in high demand by enterprises worldwide. Cooperation between the diverse organizations participating in this Summit could significantly advance the needed 'Workforce of the Future'. This Summit is open to: Professionals from various industries: junior, senior or potential systems engineers/systems architects, less or more experienced; Scientists of knowledge institutes working in the discipline of systems engineering, management, technology or policy; Talents/students from engineering disciplines interested in systems engineering/system thinking. From universities and universities of applied sciences. Date: 8 & 9 October 2024 Location: TU Delft Aula Conference Centre Click here to register

First-ever imaging of pathogens on lettuce leaves in real-time

Met een groeiende wereldbevolking van meer dan 8 miljard mensen is voldoende voedsel produceren een uitdaging. Nederland is ‘s werelds tweede exporteur van voedsel en verbouwt enorm efficiënt allerlei gewassen. Plantenziektes zoals valse meeldauw zijn echter een veelvoorkomend probleem dat de oogst van de boer flink kan bederven. Delftse wetenschappers hebben voor het eerst een manier ontwikkeld om de infectie in planten real-time te volgen, zonder de plant te hoeven doden. De hiermee opgedane kennis helpt om nieuwe resistente gewassen te kweken met een hogere opbrengst en minder gebruik van pesticiden. Het onderzoek staat nu in Nature Communications.

New LDE trainee in D&I office

Keehan Akbari has started since the beginning of September as a new LDE trainee in the Diversity and Inclusion office. What motivated him to work for the D&I office, what does he expect to achieve during this traineeship? Read the short interview below! What motivated you to pursue your LDE traineeship in Diversity and Inclusion office of the TU Delft? I completed both bachelor's and master's degrees in Cultural Anthropology and Development Sociology at Leiden University. Within these studies, my main area of interest was in themes of inclusion and diversity. After being hired as a trainee for the LDE traineeship, and discovering that one of the possible assignments belonged to the Diversity and Inclusion office, my choice was quickly made. I saw this as an excellent opportunity to put the theories I learned during my studies into practice. What specific skills or experiences do you bring to the D&I office that will help promote inclusivity on campus? I am someone who likes to connect rather than polarize, taking into account the importance of different perspectives and stakeholders. I believe that this is how one can achieve the most in fostering diversity and inclusion. You need to get multiple parties on board to get the best results. What are your main goals as you begin your role here, and how do you hope to make an impact? An important goal for me this year is to get students more involved in diversity and inclusion at the university. One way I will try to accomplish this is by contributing to the creation of D&I student teams. By establishing a D&I student team for faculties, it will be possible to deal with diversity- and inclusion-related issues that apply and relate to the specific department. How do you plan to engage with different (student) communities within the university? Since I am new to TU Delft, the first thing I need to do is expand my network here. Therefore, I am currently busy exploring the university and getting to know various stakeholders. Moreover, I intend to be in close contact with various student and study organizations to explore together how to strengthen cooperation on diversity and inclusion. Welcome to the team Keehan and we wish you lots of success with your traineeship!

Researchers from TU Delft and Cambridge University collaborate on innovative methods to combat Climate Change

For over a year and a half, researchers from TU Delft and the Cambridge University Centre for Climate Repair have worked together on groundbreaking techniques to increase the reflectivity of clouds in the fight against global warming. During a two-day meeting, the teams are discussing their progress. Researchers at Cambridge are focusing on the technical development of a system that can spray seawater, releasing tiny salt crystals into the atmosphere to brighten the clouds. The team from TU Delft, led by Prof. Dr. Ir. Herman Russchenberg, scientific director of the TU Delft Climate Action Program and professor of Atmospheric Remote Sensing, is studying the physical effects of this technique. Prof. Russchenberg emphasizes the importance of this research: "We have now taken the first steps towards developing emergency measures against climate change. If it proves necessary, we must be prepared to implement these techniques. Ideally, we wouldn't need to use them, but it's important to investigate how they work now." Prof. Dr. Ir. Stefan Aarninkhof, dean of the Faculty of Civil Engineering and Geosciences, expresses pride in the team as the first results of this unique collaboration are becoming visible. If the researchers in Delft and Cambridge can demonstrate the potential of the concept, the first small-scale experiments will responsibly begin within a year. This research has been made possible thanks to the long-term support from the Refreeze the Arctic Foundation, founded by family of TU Delft alumnus Marc Salzer Levi . Such generous contributions enable innovative and high-impact research that addresses urgent global challenges like climate change. Large donations like these enable the pursuit of innovative, high-impact research that may not otherwise be feasible, demonstrating how our collective effort and investment in science can lead to real, transformative solutions for global challenges like climate change. Climate-Action Programme

IDE Publication Highlights (Week 39 2024)

Click here to view recent publication highlights from our staff and students.

National and International Phishing Attackers revealed

Phishing attacks, which trick users into sharing private data, have been a major online security threat for years. According to a 2023 FBI report, it is the top digital crime type. Researchers from the Intelligent Systems department have collaborated with three European country-code top-level domains (ccTLDs) to characterize phishing attacks, focusing on the Netherlands’ .nl, Belgium’s .be, and Ireland’s .ie. By understanding these patterns, the research aims to enhance security measures and protect internet users from phishing threats.

11,000 young researchers have obtained a PhD from TU Delft

It was a very memorable day for PhD Amey Vasulkar last Thursday, the 19th of September. Not only did he successfully defend his promotion on Arctic Sea Ice in Tide Models, but he was also the 11,000th student to obtain a PhD from TU Delft. We are incredibly proud of and thankful for every single one of these 11,000 PhDs who started their scientific journey with us and continuously strive to change the world through their scientific innovations.

How system safety can make Machine Learning systems safer in the public sector

Machine Learning (ML), a form of AI where patterns are discovered in large amounts of data, can be very useful. It is increasingly used, for example, in chatbot Chat GPT, facial recognition, or speech software. However, there are also concerns about the use of ML systems in the public sector. How do you prevent the system from, for example, discriminating or making large-scale mistakes with negative effects on citizens? Scientists at TU Delft, including Jeroen Delfos, investigated how lessons from system safety can contribute to making ML systems safer in the public sector. “Policymakers are busy devising measures to counter the negative effects of ML. Our research shows that they can rely much more on existing concepts and theories that have already proven their value in other sectors,” says Jeroen Delfos. Jeroen Delfos Learning from other sectors In their research, the scientists used concepts from system safety and systems theory to describe the challenges of using ML systems in the public sector. Delfos: “Concepts and tools from the system safety literature are already widely used to support safety in sectors such as aviation, for example by analysing accidents with system safety methods. However, this is not yet common practice in the field of AI and ML. By applying a system-theoretical perspective, we view safety not only as a result of how the technology works, but as the result of a complex set of technical, social, and organisational factors.” The researchers interviewed professionals from the public sector to see which factors are recognized and which are still underexposed. Bias There is room for improvement to make ML systems in the public sector safer. For example, bias in data is still often seen as a technical problem, while the origin of that bias may lie far outside the technical system. Delfos: “Consider, for instance, the registration of crime. In neighbourhoods where the police patrol more frequently, logically, more crime is recorded, which leads to these areas being overrepresented in crime statistics. An ML system trained to discover patterns in these statistics will replicate or even reinforce this bias. However, the problem lies in the method of recording, not in the ML system itself.” Reducing risks According to the researchers, policymakers and civil servants involved in the development of ML systems would do well to incorporate system safety concepts. For example, it is advisable to identify in advance what kinds of accidents one wants to prevent when designing an ML system. Another lesson from system safety, for instance in aviation, is that systems tend to become more risky over time in practice, because safety becomes subordinate to efficiency as long as no accidents occur. “It is therefore important that safety remains a recurring topic in evaluations and that safety requirements are enforced,” says Delfos. Read the research paper .

Kaitai Liang receives Distinguished Reviewer Award by ESORICS 2024

I am pleased to share that Kaitai Liang, a tenured faculty member of the Cybersecurity group, has been honored with the Distinguished Reviewer Award by ESORICS 2024.

Compliant DNA nanopores capable of size-selective molecule transport across cell membrane

Scientists at TU Delft and the Max Planck Institute have made a new class of structurally adaptable ‘mechanical’ pores made from DNA that can transport molecules through cell membranes. These innovative nanopores can open and close on demand and, for the first time, adjust their diameter.

New Delft Lectures in Design

This autumn marks the introduction of IDE’s three renewed Masters programmes. One of the unifying features is a stronger link with the world-leading research carried out in IDE. “Delft Lectures in Design - Where IDE moves the Horizons of Design Research” is a case in point. This new cross-programme course serves as a rigorous and inspiring introduction to the broad variety of IDE’s research.

Safety and Security Week 2024

Join us on 7, 8 and 10 October! From October 7 to 12, 2024, the national Safety & Security Week will take place. The free program organised by TU Delft takes place on October 7, 8 and 10. It will be an educational and interactive week— make sure you're there! The full program can be found on the website , including: Two interesting masterclasses ‘ Aggression and violence on campus: Navigating between reality and myths’ and ‘ Predict and Prevent: Masterclass in Safety, Crowd and Crisis Management’ Security & Privacy symposium Safety Square: increase your knowledge about safety and prepare yourself for emergencies For more information: Safety & Security Week (tudelft.nl) . Please note: some activities require registration through the website.

Flight Case 2024: A Journey to Japan

From 22 July – 3 August, 20 IDE master students, 8 committee members from the ID Study Association, assistant professor Rebecca Price, and professor Gerd Kortuem travelled to Japan for a unique learning experience. The group worked on cases for three global companies, Sony, NHK Spring, and Sekisui, each of which provided its own distinct challenges and insights.

Boosting sustainable building education

On 17 September, TU Delft launched a new initiative to implement sustainable building practices across the Dutch educational landscape by bringing together educators from Dutch vocational institutions (MBO) and TU Delft lecturers.

Do something that matters

We komen in Nederland in het basis- en voorgezet onderwijs samen 13.500 leraren tekort. Het leraarschap heeft niet altijd de reputatie die het verdient. En dat terwijl het alles in zich heeft. Daarom startte Universiteiten van Nederland (UNL) vorig week de campagne ‘Doe iets wat ertoe doet’. Het doel is om mensen met een nieuwe blik naar het leraarschap te laten kijken.

Marina Bos-de Vos wins EURAM best paper award

At the end of June, IDE Assistant Professor of Strategic Design for Ecosystem Innovation, Marina Bos-de Vos, won two awards as a first author at the European Academy of Management (EURAM) Conference for her research paper "Projecting for accelerating sustainability transitions: practices of joint value creation in circular economy programs".