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Borgart, A. (author)Shell structures can be either calculated with complex mathematics and differential geometry, or with the help of finite element method (FEM) software. Neither method gives the designer sufficient insight about the behaviour of the shell in the early design stage. The first method is for most designers too complex, it requires proficiency in at...doctoral thesis 2024
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den Daas, Michiel (author)Path generation mechanisms are those mechanisms that produce a predetermined path. Such mechanisms are prevalent in daily life, and many devices depend on path generation mechanisms or are derived from path generation mechanisms. One might think of examples such as vehicle suspension, film advance mechanisms or sewing machines. These are...master thesis 2024
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Simoes dos Santos, D. (author), Baldini, L.B. (author), Vos, H.J. (author), Verweij, M.D. (author), de Jong, N. (author), van Neer, P.L.M.J. (author)The accurate determination of the transfer function of ultrasound transducers is important for their design and operational performance. However, conventional methods for quantifying the transfer function, such as hydrophone measurements, radiation force balance, and pulse-echo measurements, are costly and complex due to specialized equipment...journal article 2024
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Shoja, Aydin (author), van der Neut, J.R. (author), Wapenaar, C.P.A. (author)Recently, the focus of reflection seismologists has shifted to applications where a high-resolution image of the subsurface is required. Least-Squares Reverse-Time Migration (LSRTM) is a common tool used to compute such images. Still, its high computational costs have led seismologists to use target-oriented LSRTM for imaging only a small target...journal article 2024
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Bhambhani, A. (author), Jovanovic, O. (author), van Nieuwenhuijzen, Arjen (author), van der Hoek, J.P. (author), Kapelan, Z. (author)Resources recovery can improve the economic efficiency and reduce the negative environmental impacts of municipal wastewater treatment plants (MWWTP). The recovered resources can also actively benefit the natural environment enabling a reciprocal relationship between human society and nature. Focusing on these benefits can reveal new resources...journal article 2024
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Huisman, K.H. (author)In this thesis we perform a theoretical study on the Chirality Induced Spin Selectivity effect in the context of two-terminal measurements for realistic parameters. In twoterminal measurements on chiral molecules one of the leads is magnetized and the current is measured for opposite magnetizations. In experiment it is found that the currents...doctoral thesis 2023
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- Deng, Heqi (author) master thesis 2023
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Bufler, Valentin (author)This thesis set out to investigate how small to midsize industrial design practices address strategic challenges. For this a literature review was conducted, as well as complementary desk research and an interview study with design practitioners. Later on three small case studies helped set the direction of the project. The findings and insights...master thesis 2023
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Joosen, Marnick (author)Spinal cord injury(SCI) is a life-altering event that often leads to wheelchair confinement and a lifetime of secondary health complications. Gait orthoses aim to restore mobility and improve the quality of life for these individuals. However, they are often rejected due to the high energy expenditure required by the individual. This project...master thesis 2023
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Shokrolahzade, E. (author), De Martino, C. (author), Spirito, M. (author)In this contribution we present an approach to reduce the error arising from the variations of the lumped load, due to process spread, in probe level calibrations. First, full-wave electromagnetic (EM) simulations are employed to generate the nominal standard responses, then a parametric EM simulation of the load structure is used to generate a...conference paper 2023
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Özkayar, G. (author), Wang, Z. (author), Lötters, J.C. (author), Tichem, M. (author), Ghatkesar, M.K. (author)Reciprocating piezoelectric micropumps enable miniaturization in microfluidics for lab-on-a-chip applications such as organs-on-chips (OoC). However, achieving a steady flow when using these micropumps is a significant challenge because of flow ripples in the displaced liquid, especially at low frequencies or low flow rates (<50 µL/min)....journal article 2023
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ten Bosch, B.I.M. (author)A variational principle for the Upper Convected Maxwell model is presented. The stationary value of the appropriate functional is the drag on an immersed object. From the principle, a formula is derived for the derivative of the drag with respect to the Deborah number for an arbitrarily shaped particle in a circular duct under creeping flow...journal article 2023
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Niehaus, Anya (author)Pistons for reciprocating compressors for industrial applications are often made of specialised materials. These prove to have problems with manufacture due to the high quality and short production times needed in combination with a low production volume per design. Additive manufacturing, specifically selective laser melting, could solve the...master thesis 2022
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Jongerius, Ricardo (author)Online dating has become the most popular method of finding potential romantic partners. At the core of these platforms, there is a reciprocal recommender system which recommends users to other users on the platform. Breeze is an example of such a dating app, serving its users potential romantic partners every day in the hopes of sending them on...master thesis 2022
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Haasis, Chris (author)The buildings construction industry is demanded to reduce its ecological footprint to mitigate its contribution to climate change. In this context, a novel sustainable design strategy for the reuse of timber was developed in this Master thesis. The design strategy focuses on the utilization of the material “reclaimed timber” (RT) in the...master thesis 2022
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van der Kamp, Pieter (author)N-path filters promise to miniaturize RF receivers by replacing various fixed off-chip filters with a single programmable on-chip filter. This research investigates some of the issues of receivers with N-path filters under strong blocker conditions: reciprocal mixing and inherent nonlinearity. First, a technique for reciprocal mixing...master thesis 2022
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Mir, S.A.M. (author), Latoskinas, Evaldas (author), Proksch, S. (author), Gousios, G. (author)Dynamic languages, such as Python and Javascript, trade static typing for developer flexibility and productivity. Lack of static typing can cause run-time exceptions and is a major factor for weak IDE support. To alleviate these issues, PEP 484 introduced optional type annotations for Python. As retrofitting types to existing code-bases is...conference paper 2022
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Wapenaar, C.P.A. (author), Slob, E.C. (author)Inspired by recent developments in wave propagation and scattering experiments with parity-time (PT) symmetric materials, we discuss reciprocity and representation theorems for 3D inhomogeneous PT-symmetric materials and indicate some applications. We start with a unified matrix-vector wave equation which accounts for acoustic, quantum...journal article 2022
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Chiang, Y.-C. (author)This paper investigates the correlations among 3D graphic statics, Maxwell–Rankine stress function, and Pucher's equation (the governing equation of membrane shells). When there is only vertical load, a solution of Pucher's equation can be converted into a Maxwell–Rankine stress function. The resulting stress function can be further...journal article 2022
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Korovilas, Dionisios (author)The medium-altitude long-endurance (MALE) unmanned aerial vehicle (UAV) plays a key role in both military and civilian applications around the world. However, in a world where electric UAVs are increasingly becoming the norm, the MALE UAV is still primarily powered by hydrocarbon fuels and its design is very much constrained by existing general...master thesis 2021