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Playscapes

In this PhD project we are interested in what stimulates young children to engage in physical play in hospital settings. The research, in its current stage, focuses on young children with cancer. When hospitalised, children often show low levels of physical activity. Increasing these levels can positively affect the child and family both experientially and developmentally. As part of the project we are developing a design perspective called ‘Playscapes’, hinting at children’s perception of their direct environment as potential ‘landscape for play’. Playscapes is inspired by young children’s outdoor play, which typically involves a high amount of physical activity. The design perspective accounts for three main qualities: free play (play that is spontaneous, self-directed, unstructured), bodily play (play that involves a diversity of gross motor movements) and dispersed play (play that is dispersed and beyond the boundaries of a predefined play area). We are gaining and sharing concrete insights on how to design for these qualities in hospital settings. Boudewijn Boon Marco Rozendaal (Daily Supervisor) Pieter Jan Stappers (Promotor) Marry M. van den Heuvel-Eibrink (Promotor, Princess Máxima Center for pediatric oncology) Janjaap van der Net (External Advisor, Wilhelmina Children’s Hospital) Two design examples that have resulted from Playscapes are ‘Fizzy’ and ‘Stickz’. Fizzy (this page) is a pro-active ball that wiggles to get your attention, rolls away when being approached, shakes when it is picked up, and purrs when being caressed. With this behavioural repertoire, Fizzy invites children to follow and play, while allowing the child to attach their own meaning to it (e.g. Fizzy as ball or creature). Stickz (next page) are soft branch-shaped objects which can be used to build various structures. As loose and connectable parts, Stickz invite dragging, carrying and building. The ambiguous shapes of Stickz and the creations children make with them, stimulate children’s imagination (e.g. a single Stick as a swordor a construction as a ’tent for nurse Amy’). This PhD project uses a ‘Research through Design’ approach in which design actions and resulting prototypes play a central role in exploring a social phenomenon in real life settings. For example, the Fizzy prototype (previous page) was used to explore physical play in patient rooms, while Stickz (this page) were introduced to a semi-public waiting area in the hospital. With these efforts we are gaining rich insight into how the designs, children, parents, siblings and hospital staff play various roles in stimulating physical play. The research is part of a project called ‘Meedoen=Groeien!’, in which we collaborate with the Princess Máxima Center for paediatric oncology and the Dutch Rehabilitation Fund. The project is unique in that it does not only aim to generate knowledge output, but also commercial design output. For example, a variant on Stickz is currently being developed further by an interior design agency for implementation in the Princess Máxima Center. Furthermore, the project has served as a design context for several graduation projects and courses such as Interactive Technology Design, Advanced Concept Design and the minor Interactive Environments. Previous project Overview of projects Next project

KOOKID

KOOKID initiates a daily moment to connect for parents and their infants (1,5 up to 3 years old) by involving the child in the process of cooking in a safe, explorative and playful way. The child’s natural movements are utilized in a beneficial way by the various elements. This facilitates simple cooking actions like cutting, mashing and cracking. In this way, infants can proudly contribute to the dinner preparation. Furthermore, integrating KOOKID in the kitchen and on the dinner table helps the child to understand the transition from cooking to eating dinner, while given the opportunity to positively relate to healthy food at an early age. Graduation Project Lotte Jacobse Anna Pohlmeyer (Chair) Stella Boess (Mentor) Marcel Botha (Company Mentor) In this exceptional graduation project (DfI) Lotte did not stop with a concept and experiential prototype, but with a refined, final (3D printed) product that has been improved in three iterations with fully functional prototypes and corresponding testing in context (dinner preparation with children 1.5-3 years old). The company involved, 10XBeta, a product development company based in New York, is currently seeking opportunities of crowdfunding for this project in order to bring it to market. Furthermore, in addition to the high level of product refinement, Lotte had an extensive research phase in the beginning, including multiple observations in context, expert interviews, literature review and a collection of daily anecdotes by parents. Her design is the first design project that is fully grounded on the positive design framework, developed by Pieter Desmet and Anna Pohlmeyer, and thereby an exceptionally nice example that bridges research, education and design. In this line, we also published a conference paper on the research outcomes of this project: a novel approach to design for co-wellbeing of different user groups. Previous project Overview of projects Next project

Dry-spell assessment through rainfall downscaling comparing deep-learning algorithms and conventional statistical frameworks

Full title: Dry-spell assessment through rainfall downscaling comparing deep-learning algorithms and conventional statistical frameworks in a data scarce region: The case of Northern Ghana By Panagiotis Mavritsakis Large parts of the world rely on rainfed agriculture for their food security. In Africa, 90% of the agricultural yields rely only on precipitation for irrigation purposes and approximately 80% of the population’s livelihood is highly dependent on its food production. Parts of Ghana are prone to droughts and flood events due to increasing variability of precipitation phenomena. Crop growth is sensitive to the wet- and dry-spell phenomena during the rainy season. To support rural communities and small farmer in their efforts to adapt to climate change and natural variability, it is crucial to have good predictions of rainfall and related dry/wet spell indices. This research constitutes an attempt to assess the dry-spell patterns in the northern region of Ghana, near Burkina Faso. We aim to develop a model which by exploiting satellite products overcomes the poor temporal and spatial coverage of existing ground precipitation measurements. The main objective is to reproduce the dry spell sequences as seen by the rain gauges (point scale) in the region of Northern Ghana based on satellite precipitation products (CMORPH, TAMSAT, IMERG). We will compare conventional statistical tools and Machine Learning classification models and deep-learning algorithms to establish a link between satellite products and field rainfall data for dry-spell assessment. The deep-learning architecture used should be able to process satellite images efficiently. Hence, several Convolutional Neural Network architectures were tested as classifiers. Using these models we will attempt to exploit the long temporal coverage of the satellite products in order to overcome the poor temporal and spatial coverage of existing ground precipitation measurements. Doing that, our final objective is to enhance our knowledge about the dry-spell characteristics and, thus, provide more reliable climatic information to the smallholder farmers in the area of Northern Ghana.

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Students Amos Yusuf, Mick Dam & Bas Brouwer winners of Mekel Prize 2024

Master students Amos Yusuf, from the ME faculty (Mick Dam, from the EEMCS faculty and graduate Bas Brouwer have won the Mekel Prize 2024 for the best extra scientific activity at TU Delft: the development of an initiative that brings master students into the classroom teaching sciences to the younger generations. The prize was ceremonially awarded by prof Tim van den Hagen on 13 November after the Van Hasselt Lecture at the Prinsenhof, Delft. They received a statue of Professor Jan Mekel and 1.500,- to spend on their project. Insights into climate change are being openly doubted. Funding for important educational efforts and research are being withdrawn. Short clips – so called “reels” – on Youtube and TikTok threaten to simplify complex political and social problems. AI fakes befuddle what is true and what is not. The voices of science that contribute to those discussion with modesty, careful argument and scepticism, are drowned in noise. This poses a threat for universities like TU Delft, who strive to increase student numbers, who benefit from diverse student populations and aim to pass on their knowledge and scientific virtues to the next generation. It is, therefore, alarming that student enrolments to Bachelor and Master Programs at TU Delft have declined in the past year. Students in front of the class The project is aimed to make the sciences more appealing to the next generation. They have identified the problem that students tend miss out on the opportunity of entering a higher education trajectory in the Beta sciences – because they have a wrong picture of such education. In their mind, they depict it as boring and dry. In his pilot lecture at the Stanislas VMBO in Delft, Amos Yusuf has successfully challenged this image. He shared his enthusiasm for the field of robotics and presented himself as a positive role model to the pupils. And in return the excitement of the high school students is palpable in the videos and pictures from the day. The spark of science fills their eyes. Bas Brouwer Mick Dam are the founders of NUVO – the platform that facilitates the engagement of Master Students in high school education in Delft Their efforts offer TU Delft Master Students a valuable learning moment: By sharing insights from their fields with pupils at high school in an educational setting, our students can find identify their own misunderstandings of their subject, learn to speak in front of non-scientific audiences and peak into education as a work field they themselves might not have considered. An extraordinary commitment According to the Mekel jury, the project scored well on all the criteria (risk mitigation, inclusiveness, transparency and societal relevance). However, it was the extraordinary commitment of Amos who was fully immersed during his Master Project and the efforts of Brouwer and Dam that brought together teaching and research which is integral to academic culture that made the project stand out. About the Mekel Prize The Mekel Prize will be awarded to the most socially responsible research project or extra-scientific activity (e.g. founding of an NGO or organization, an initiative or realization of an event or other impactful project) by an employee or group of employees of TU Delft – projects that showcase in an outstanding fashion that they have been committed from the beginning to relevant moral and societal values and have been aware of and tried to mitigate as much as possible in innovative ways the risks involved in their research. The award recognizes such efforts and wants to encourage the responsible development of science and technology at TU Delft in the future. For furthermore information About the project: https://www.de-nuvo.nl/video-robotica-pilot/ About the Mekel Prize: https://www.tudelft.nl/en/tpm/our-faculty/departments/values-technology-and-innovation/sections/ethics-philosophy-of-technology/mekel-prize

New catheter technology promises safer and more efficient treatment of blood vessels

Each year, more than 200 million catheters are used worldwide to treat vascular diseases, including heart disease and artery stenosis. When navigating into blood vessels, friction between the catheter and the vessel wall can cause major complications. With a new innovative catheter technology, Mostafa Atalla and colleagues can change the friction from having grip to completely slippery with the flick of a switch. Their design improves the safety and efficiency of endovascular procedures. The findings have been published in IEEE. Catheter with variable friction The prototype of the new catheter features advanced friction control modules to precisely control the friction between the catheter and the vessel wall. The friction is modulated via ultrasonic vibrations, which overpressure the thin fluid layer. This innovative variable friction technology makes it possible to switch between low friction for smooth navigation through the vessel and high friction for optimal stability during the procedure. In a proof-of-concept, Atalla and his team show that the prototype significantly reduces friction, averaging 60% on rigid surfaces and 11% on soft surfaces. Experiments on animal aortic tissue confirm the promising results of this technology and its potential for medical applications. Fully assembled catheters The researchers tested the prototype during friction experiments on different tissue types. They are also investigating how the technology can be applied to other procedures, such as bowel interventions. More information Publicatie DOI : 10.1109/TMRB.2024.3464672 Toward Variable-Friction Catheters Using Ultrasonic Lubrication | IEEE Journals & Magazine | IEEE Xplore Mostafa Atalla: m.a.a.atalla@tudelft.nl Aimee Sakes: a.sakes@tudelft.nl Michaël Wiertlewski: m.wiertlewski@tudelft.nl Would you like to know more and/or attend a demonstration of the prototype please contact me: Fien Bosman, press officer Health TU Delft: f.j.bosman@tudelft.nl/ 0624953733

A key solution to grid congestion

On behalf of the TU Delft PowerWeb Institute, researchers Kenneth Brunninx and Simon Tindemans are handing over a Position Paper to the Dutch Parliament on 14 November 2024, with a possible solution to the major grid capacity problems that are increasingly cropping up in the Netherlands. The Netherlands is unlikely to meet the 2030 climate targets, and one of the reasons for this is that large industry cannot switch to electricity fast enough, partly because of increasingly frequent problems around grid capacity and grid congestion. In all likelihood, those problems will actually increase this decade before they can decrease, the researchers argue. The solution offered by the TU Delft PowerWeb Institute researchers is the ‘flexible backstop’. With a flexible backstop, the current capacity of the power grid can be used more efficiently without sacrificing safety or reliability. A flexible backstop is a safety mechanism that automatically and quickly reduces the amount of electricity that an electric unit can draw from the grid (an electric charging station or a heat pump) or deliver (a PV installation). It is a small device connected or built into an electrical unit, such as a charging station or heat pump, that ‘communicates’ with the distribution network operator. In case of extreme stress on the network, the network operator sends a signal to the device to limit the amount of power. Germany recently introduced a similar system with electric charging stations. The backstop would be activated only in periods of acute congestion problems and could help prevent the last resort measure, which is cutting off electricity to users. ‘Upgrading the electricity network remains essential, but in practice it will take years. So there is a need for short-term solutions that can be integrated into long-term planning. We, the members of the TU Delft PowerWeb Institute, call on the government, network operators and regulator to explore the flexible backstop as an additional grid security measure,’ they said. The entire Paper can be read here . Kenneth Brunninx Associate Professor at the Faculty of Engineering, Governance and Management, where he uses quantitative models to evaluate energy policy and market design with the aim of reducing CO2 emissions. Simon Tindemans is Associate Professor in the Intelligent Electrical Power Grids group at Faculty of Electrical Engineering, Mathematics and Computer Science. His research interests include uncertainty and risk management for power grids. TU Delft PowerWeb Institute is a community of researchers who are investigating how to make renewable energy systems reliable, future proof and accessible to everyone.