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Work with us About AI, Data and Digitalisation at the TU Delft At the TU Delft we excel in both fundamental as well as applied disciplines, which form the base for collaboration on scientific and societal challenges. The TU Delft AI Initiative unites and strengthens the AI, data and digitalisation developments at TU Delft. This programme acts as a catalyst for research, education and collaborations both in and with AI, data and digitalisation. We strongly believe in combining fundamental and applied research, which is exemplified by our newly established TU Delft AI Labs. Collaborative research and educating the future generation of digital professionals are pillars of this programme. We have a university-wide talent programme, involving both faculty members and PhD students, with which we attract and support almost 125 new talents in AI, Data & Digitalisation over the course of 2020 and 2021. The positions are aimed at both AI experts as well as those who wish to apply AI in their Science, Technology, Engineering or Design field. All the current vacancies can be accessed via www.tudelft.nl/ai/vacancies . Working from the TU Delft AI Labs The new and current researchers will join forces in the so-called ‘TU Delft AI Labs’ programme. Artificial intelligence, data and digitalisation are becoming increasingly important when looking for answers to major scientific and societal challenges. In a TU Delft AI lab, experts in ‘the fundamentals of AI technology’ along with experts in ‘AI challenges’ run a shared lab. In total, TU Delft will establish 24 TU Delft AI Labs where 48 Tenure Trackers and 96 PhD candidates will have the opportunity to push the boundaries of science by using AI. Each team is driven by research questions which arise from scientific and societal challenges and contribute to the development and execution of domain specific education. The TU Delft is proud to be a university where academics have the freedom to challenge and develop themselves in an international, multidisciplinary and collaborative community and is looking forward to welcome new Assistant Professors and PhD students to further explore the possibilities of AI (related) research. Vacancies & set job alert

Restoring port culture to the city

For centuries, ports have been important to cities and to the hinterland. Yet the maritime mindset has disappeared from many port cities, researcher Carola Hein has concluded. This development represents a danger for the future of ports. She is applying historical research in an effort to restore the link between port and city. “We cannot design a sustainable future without considering the past.” Every day, enormous container ships moor in ports across the world to load and unload goods. Many port cities owe their development and prosperity to this link with the rest of the world, says Carola Hein, professor of the History of Architecture and Urban Planning. “Take Venice and Amsterdam. In the past these cities were global powers, and entirely one with their ports. This can still be seen from their design and architecture, for example the inner-city waterways and warehouses. In Hamburg, the port-city relationship can also be seen in modern architecture, for example buildings shaped like ships.” Maritime mindset Growing up in Hamburg, Hein got to experience the impact a port has on a city at a young age. “I saw large ships enter the port along the Elbe. Every morning, there were calls on the radio for the number of people who would be needed that day to unload goods. In the city, everyone was connected to the port in some way. Even today, the port is part of the city and the residents’ way of thinking. A maritime mindset still pervades the city. I experience it too. This is the background to my interest in architecture and urban planning. I always have one eye on the past.” Separation of port and city This connection between port and city that is still so prominent in Hamburg and used to be a more general phenomenon in the past is certainly not present everywhere anymore. Hein’s research has covered, among other things, the historic development of Rotterdam and London . “The port of Rotterdam was the determining factor in the city for centuries. But easterly as well as westerly expansion have resulted in a separation of port and city. In London, the port has even disappeared from the city entirely. This separation has meant the loss of port culture, and it has become more difficult to find people to work in the port. Given the economic interest of ports, this is a big problem.” Carola Hein C.M.Hein@tudelft.nl TU Delft pagina NEWS Nieuwe Unesco-leerstoel van Carola Hein legt de verbinding tussen water en erfgoed (only in Dutch) Origins of port cities A central question in Hein’s research is what port and city have traditionally meant to each other. Among other things, she identifies the factors that play a role in this relationship. Hein: “In Rotterdam we see that, from the mid-nineteenth century onwards, the ascent of oil has influenced the development of the port to a major extent . By now, three quarters of the port is set up for oil, for example for refinery and transhipment of crude oil. In turn, this has consequences for the connections with the hinterland. Beyond its influence on the landscape, oil has also shaped society and legislation; think of all the people who work in the oil industry, and of the rules that have evolved to limit risks.” Importance of history If we do not understand how developments such as the ascent of oil have determined an environment, equipping this environment in a sustainable manner becomes very difficult, Hein continues. “We cannot remove existing infrastructure from one day to the next. We therefore need the past to help us design the future in the present. This design must include existing structures. In addition to this, historical data regarding a port city indicate what further developments and patterns of thought we might expect. Based on this, you can determine strategies to future-proof a port city and restore the connection between port and city.” Examples of the port-city relationship A good example of an area that is being developed on the basis of the past is the Rotterdam Makers District , says Hein. “In the Merwe-Vierhaven area , which used to be one of the world’s largest ports for fruit, industry from the past is being recommissioned to serve new purposes, such as housing and offices for start-ups in the creative industry. Here we clearly see interventions and infrastructure plans being combined with new objectives whilst retaining certain of the erstwhile functions. Building on foundations from the past, port and city are interacting in a new manner.” Spatial mapping Hein uses geospatial mapping in her investigations of the port-city relationship. Using GIS constructions (GIS = Geographical Information System), she renders historical and spatial developments of a city and port and the relationship between them visible. Hein: “Among other things, I study the ways in which the space around a port city was used through the years. Using GIS and deep-mapping methods, I try to interpret the developments through the years and to get a good idea of the relationship between port and city. This doesn’t only relate to economic value, such as how many containers a port can process and how quickly, but also to social, cultural and ecological values.” Weighing values A number of dualities apply in terms of these values, Hein continues. “We need to take various aspects into account and to weigh them up against each other. We want cheap products from China, but we also want a cleaner environment. We want technological advancement, but we also want job opportunities. We want to conserve our historical heritage, but we also want room in which to build housing.” According to Hein, it is important to involve society when weighing up these things. She mentions Hamburg as an example. In Hamburg, environmental organisations secured a court order banning the further deepening of the harbour to accommodate larger container ships. “In this case, ecological interests weighed more heavily than economic ones.” PortCityFutures In PortCityFutures , a collaboration between TU Delft, Leiden University and Erasmus University Rotterdam, students and academics are investigating among other things the conflicts that the port-city relationship is subject to. Hein: “We are trying to develop new ways of looking, designing and collaborating that do justice to the various port-city relationships, such as their sociocultural identity. In doing this, we apply a sociospatial method which allows us to comparatively assess the role of soft values, such as social and cultural elements, and those of institutions and the built environment.” Integrated collaboration According to Hein, this method clearly shows the areas around port cities to be the result of the interaction between humans and nature, and the extent to which these interactions are determined by social, symbolic and ecological values. “We view issues from multiple perspectives and collaborate with as many parties as possible. These include port authorities, political representatives, members of the public, sociologists, spatial planners, historians and designers. Together we must develop strategies and take design measures to ultimately ensure that the maritime mindset is restored or retained. This is what I hope my research will contribute to.”

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NWO grants funding for innovative research on physical experimental environments

How to move from experiment to mainstream? A consortium led by professor Tamara Metze, has been awarded a prestigious grant from the Netherlands Organisation for Scientific Research (NWO). In search for pathways toward more sustainable futures, Metze and her team will explore how various innovations in field labs such as The Green Village, in urban living labs such as Engy Lab South-East in Amsterdam, and in all sorts of citizens’ initiatives, can be mainstreamed and make more impact on sustainability transitions. Pilot paradox The project ‘From EXperiment to sustainable change: TRAnsformative methodologies for Innovation and learning’ (EXTRA) seeks to overcome a persistent “pilot paradox”. In this paradox, much experimentation takes place but long-term systemic impact remains difficult. Researchers together with all sorts of change makers will synthesise existing knowledge on how to mainstream, upscale, spread, broaden and deepen developed innovations. Tamara Metze: ‘I am excited to unravel what are effective ways of cocreation that lead to mainstreaming the positive changes made in experimental environments. We will figure out how learning and innovation can lead to lasting changes in regulations, policies, and financial systems and the biophysical environment.’ Tamara Metze Read the NWO press release Actionable tools The project is crucial for accelerating sustainability transitions. By refining methodologies for mission-driven experimentation and develop hands on tools for all sorts of change-makers, it will be easier to mainstream the sustainable lessons and innovations. ‘These tools will not only aid grassroots innovators but also influence institutional and organisational structures, ensuring that lessons learned from experiments are better anchored in policies, regulations, and organisations’, explains Metze. The project will employ a transdisciplinary action research approach, bringing together knowledge from various disciplines and policy domains. By co-creating solutions with public and private partners, the research will have an immediate impact. In the long term, the project aims to build a more efficient innovation ecosystem, contributing to more impactful and sustainable outcomes for both society and the environment. Projectpartners TU Delft, VU Amsterdam, Wageningen University & Research, Hogeschool van Amsterdam, Erasmus Universiteit Rotterdam, Hogeschool Rotterdam, The Green Village, AMS Institute; PBL Planbureau voor de Leefomgeving, WoonFriesland, Dijkstra Draisma, Provincie Noord-Holland, Ministerie van Binnenlandse Zaken, PRICE / Almere, BouwLab, Alliantie Samen Nieuw-West, Innovation Quarter.

Unusual waves grow way beyond known limits

Waves that come from multiple directions are extremer than extreme. These remarkable deep-sea waves can be four times steeper than what was previously imagined, as is shown in research by TU Delft and other universities that was published in Nature today. A long time ago, stories were told of mysterious rogue waves that materialised out of nowhere and could topple even the largest ships. These waves lost their mythical character when the first rogue wave was recorded at the Draupner platform in the North Sea. In 2018, Ton van den Bremer and his colleagues at the Universities of Edinburgh and Oxford managed to recreate the Draupner wave in the lab for the first time ever, and this opportunity to study freak waves closely produced unexpected insights. Multiple waves push up water New research by the research consortium now shows that these remarkable waves do not break when traditional theories hold they should, the secret behind which lies in how they arise. Ton van den Bremer, expert on fluid mechanics at TU Delft and led the study, explains: “When most people think of waves, they think of the rolling waves you’d find on a beach. The type of wave we studied occurs in open water and arises when waves coming from multiple directions come together. When these waves with a high directional spread converge, the water is pushed upwards, forming a partially standing wave. An example of this is known as a crossing wave. How crossing waves arise Under certain conditions at sea, waves from multiple directions occur. This can happen in a place where two seas meet, or where winds suddenly change direction, as in a hurricane. When waves from two directions meet, a cross wave occurs, provided their directions are far enough apart. The study also shows that the further apart the directions are, the higher the resulting cross-wave. Travelling waves break when they reach a certain limit, this is when they reach their maximum steepness. The study shows that waves with a multidirectional spreading can get as much as 80% steeper than this limit before they start breaking, which means they can get almost twice as high as ‘normal waves’ before they start to break. Travelling wave (l) and a wave with high directional spreading (r) Breaking waves that grow Next, the researchers found another highly unusual phenomenon that defies existing theories, a phenomenon that is unprecedented according to Van den Bremer: “Once a conventional wave breaks, it forms a white cap, and there is no way back. But when a wave with a high directional spreading breaks, it can keep growing.” The study shows that these enormous waves can grow to twice their original steepness while breaking, which is already twice bigger than the conventional limit. Together, the waves can grow four times steeper than previously thought possible. Damage to offshore structures The knowledge that multidirectional waves can become as much as four times larger than was deemed possible can help design safer marine structures. "The three-dimensionality of waves is often overlooked in the design of offshore wind turbines and other structures in general; our findings suggest this leads to designs that are less reliable", says Mark McAllister of the University of Oxford, who led the experiments and is now a senior scientist at Wood Thilsted. Innovative vertical sensors made it possible to take accurate 3D measurements of waves. Innovative 3D measurement method A 3D measurement method developed in the FloWave lab paved the way for these new insights. “Conventional 2D wave measurement methods weren’t up to the task”, Van den Bremer explains, which is why the research group designed a new way to create 3D wave measurements. Ross Calvert of the University of Edinburgh: “This is the first time we've been able to measure wave heights at such high spatial resolution over such a big area, giving us a much more detailed understanding of complex wave breaking behaviour." FloWave Ocean Energy Research Facility in Edinburgh. The circular basin has a diameter of 25 metres and can be used to generate waves from multiple directions. Header image by: Fabien Duboc

Ensuring safe and quick food bike-delivery services in cities

Cyclists rushing to deliver food on time to hungry customers is an increasing problem in cities with the growing demand for fast home delivery services. This surge has resulted in more traffic in bike lanes, contributing to accidents and raising concerns about rider safety. In the framework of SINERGI project researchers like Yousef Maknoon are looking into solutions that will help boost logistic operations that are both efficient and safe. ‘Bike delivery services are a great way to transport goods from A to B in a green manner, replacing delivery cars or vans. These micro-delivery systems can really help make city logistics more sustainable,’ says logistics and modelling expert Yousef Maknoon, who is involved in developing real-time decision models for the SINERGI project. Besides looking into sustainability, the project aims to empower delivery providers to offer cost-efficient services, while prioritising the well-being of riders. ‘We want to help bring down the number of accidents,’ stresses Maknoon. Private and public stakeholders have joined to conduct pilot initiatives in the cities of Amsterdam, Shanghai, Singapore and Copenhagen. Yousef Maknoon Safe routing ‘To improve rider safety, the app automatically provides recommended routes when food delivery riders receive their task, helping them avoid dangerous intersections and busy streets. In Amsterdam, the goal is to develop a map that will show the safety of cycling infrastructure. The map is planned to be enriched with real-time information such weather conditions, busy days, and times of the week to not only improve delivery time prediction but also assess route safety in real time,’ explains Maknoon. ‘But everything depends on the cyclist's willingness to take the safer route. When a rider is paid per delivery, they might not be willing to take a longer route. Especially when they know the area well, it can be tempting to take a shorter route that may not always be the safest option.’ A survey held amongst 300 delivery riders found that they can be nudged to follow the recommended routes when they are compensated financially. Profit versus safety Maknoon: ‘What we also found is that paying an hourly fee, instead of paying per on-time delivery, promotes safer riding behaviour, like Just Eat Take​away does in the pilot in Amsterdam. However, other issues arise because riders might not be so motivated to deliver on time. Then you need other incentives to motivate efficiency among riders. Otherwise, customers might switch to other service providers. This puts the business model which is based on hourly payment and prioritize safety, under pressure.’ It seems now that delivery services need to make a trade-off between profit and safety. ‘With the SINERGI project we want to empower delivery providers to offer cost-efficient services while prioritising the well-being of riders.’ Government regulation Public authorities can, for example, improve road safety by enhancing infrastructure, such as building separate bicycle lanes.’ Delivery providers can introduce incentives for riders that compensate the extra time a longer, but safer, route might take. But this puts pressure on profitability and could cause micro-delivery logistics platforms to struggle or even go out of business. It is likely that government regulation will need to play a role in profit-driven societies, as safety risks being overshadowed. Fair delivery system This is also the case for ensuring a fair delivery system where all customers are serviced, whether they live in the busy city centre or the less densely populated countryside. Otherwise, customers who live farther away may not be serviced, as longer cycling times mean less money for riders when they are paid by commission. Riders can simply reject these orders and choose to deliver only to places where they think they can earn more. Human factor In this digitally connected world, we need to consider the human factor in real-time decision-making. The wellbeing of riders, their working conditions, and their quality of life are also important when we talk about making operational decisions. It is interesting to compare the four cities and how they manage the tension between cost-efficiency and safety, and to see what they can learn from each other. About SINERGI SINERGI is a three-year project that runs from 2023 to 2026. It involves thirteen research institutions, governmental authorities, and companies collaborating on a comprehensive framework to improve sustainable city logistics. The project aims to enable real-time management and strategic planning of efficient, safe and user-friendly delivery services. Besides Yousef Maknoon other researchers from TU-Delft involved are: Shadi Sharif Azadeh (project leader), Gonçalo Correia, Kuldeep Kavta and Dongyang Xia. Read more about the SINERGI project.