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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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TU Delft jointly wins XPRIZE Rainforest drone competition in Brazil

TU Delft jointly wins in the XPRIZE Rainforest competition in the Amazon, Brazil Imagine using rapid and autonomous robot technology for research into the green and humid lungs of our planet; our global rainforests. Drones that autonomously deploy eDNA samplers and canopy rafts uncover the rich biodiversity of these complex ecosystems while revealing the effects of human activity on nature and climate change. On November 15, 2024, after five years of intensive research and competition, the ETHBiodivX team, which included TU Delft Aerospace researchers Salua Hamaza and Georg Strunck, achieved an outstanding milestone: winning the XPRIZE Rainforest Bonus Prize for outstanding effort in co-developing inclusive technology for nature conservation. The goal: create automated technology and methods to gain near real-time insights about biodiversity – providing necessary data that can inform conservation action and policy, support sustainable bioeconomies, and empower Indigenous Peoples and local communities who are the primary protectors and knowledge holders of the planet’s tropical rainforests. The ETHBiodivX team, made of experts in Robotics, eDNA, and Data Insights, is tackling the massive challenge of automating and streamlining the way we monitor ecosystems. Leading the Robotics division, a collaboration between TU Delft’s Prof. Salua Hamaza, ETH Zurich’s Prof. Stefano Mintchev and Aarhus University’s Profs. Claus Melvad and Toke Thomas Høye, is developing cutting-edge robotic solutions to gather ecology and biology data autonomously. “We faced the immense challenge of deploying robots in the wild -- and not just any outdoor environment but one of the most demanding and uncharted: the wet rainforests. This required extraordinary efforts to ensure robustness and reliability, pushing the boundaries of what the hardware could achieve for autonomous data collection of images, sounds, and eDNA, in the Amazon” says prof. Hamaza. “Ultimately, this technology will be available to Indigenous communities as a tool to better understand the forest's ongoing changes in biodiversity, which provide essential resources as food and shelter to the locals.” . . . .

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