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Miedema, Daphne (author), Taipalus, Toni (author), Aivaloglou, E.A. (author)Several educational studies have argued for the contextualization of assignments, i.e., for providing a context or a story instead of an abstract or symbolic problem statement. Such contextualization may have beneficial effects such as higher student engagement and lower dropout rates. In the domain of database education, textbooks and...conference paper 2023
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Aivaloglou, E.A. (author), Fletcher, George (author), Miedema, Daphne (author)Interest in data systems education is increasing, especially with the rise in demand for well-trained and re-trained data scientists. The database and the computing education research communities have complementary perspectives and experiences to share with each other. The DataEd workshop is organized as a dedicated venue for these...conference paper 2023
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Taipalus, Toni (author), Miedema, Daphne (author), Aivaloglou, E.A. (author)Querying a relational database is typically taught in practice by using an exercise database. Such databases may be simple toy examples or elaborate and complex schemas that mimic the real world. Which of these are preferable for students is yet unknown. Research has shown that while more complex exercise databases may hinder learning, they...conference paper 2023
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Cuevas, Alejandro (author), Miedema, F.E.G. (author), Soska, Kyle (author), Christin, Nicolas (author), van Wegberg, R.S. (author)A number of recent studies have investigated online anony- mous (“dark web”) marketplaces. Almost all leverage a “measurement-by-proxy” design, in which researchers scrape market public pages, and take buyer reviews as a proxy for ac- tual transactions, to gain insights into market size and revenue. Yet, we do not know if and how this method...conference paper 2022
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Tan, J. (author), Wang, X. (author), Jarquin Laguna, A. (author), Polinder, H. (author), Miedema, S.A. (author)Downsizing the Power Take-off (PTO) rating has been proven to be beneficial for decreasing the Levelized Cost of Energy (LCOE) of wave energy converters (WECs). However, the linear permanent magnet (PM) generator has not yet been modelled and optimized in detail in previous feasibility studies. This paper extends the study of the PTO...conference paper 2021
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Mania, J. (author), Miedema, F.E.G. (author), Browne, Rose (author), Broekens, D.J. (author), Oertel, Catharine (author)Virtual agents are increasingly being used for communication training such as public speaking-, job interviews-, as well as negotiation training. In these use-cases the agent is generally taking on the role of interviewer and its behaviour is altered according to the nonverbal cues of its human interlocutor. However, understanding how the...conference paper 2020
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van Wegberg, R.S. (author), Miedema, F.E.G. (author), Akyazi, U. (author), Noroozian, A. (author), Klievink, A.J. (author), van Eeten, M.J.G. (author)Many cybercriminal entrepreneurs lack the skills and techniques to provision certain parts of their business model, leading them to outsource these parts to specialized criminal vendors. Online anonymous markets, from Silk Road to AlphaBay, have been used to search for these products and contract with their criminal vendors. While one listing of...conference paper 2020
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Miedema, Nico Arjen (author), Vermeer, Jop (author), Lukosch, S.G. (author), Bidarra, Rafael (author)In recent years, many promising developments have taken place around augmented, virtual and mixed-reality technology. One could wonder whether these technologies can be combined to yield a mix of video games and sports, involving physical activities previously deemed impossible: creating a superhuman sport. This work investigates how mixed...conference paper 2019
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Vermeer, Job (author), Alaka, Shaad (author), de Bruin, Niels (author), Miedema, Nico Arjen (author), Winnubst, Nick (author), Trap, Cyril (author), Bidarra, Rafael (author)League of Lasers is a motion-based game where two teams compete in a mix between football and Pong [2]. Players use `virtual mirrors' to try to guide a laser pulse towards the opponent team's target. The game aims at stimulating interaction between players by making cooperation a vital part of the gameplay, while having them physically move...conference paper 2018
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Miedema, S.A. (author)Different approaches are present in literature for slurry transport in inclined pipes. Most models assume that the socalled solids effect, the hydraulic gradient of the mixture minus the hydraulic gradient of the carrier liquid, has to be multiplied by the cosine of the inclination angle to a certain power. These powers vary from 0.25 to 1.7. In...conference paper 2017
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Miedema, S.A. (author)Most concentration distribution models are based on the advection diffusion equation for two-dimensional (2D) channel flow. These models may or may not incorporate hindered settling based on the cross-sectional averaged spatial volumetric concentration. These models also use a diffusivity based on the turbulent momentum diffusivity, sometimes...conference paper 2017
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Miedema, S.A. (author)In slurry transport there are many models for fine, medium and coarse particles, based on the assumption that the particles are still small compared to the pipe diameter. However, when the particle size is not small compared to the pipe diameter (up to 25% of the pipe diameter) the models do not give a good prediction of the hydraulic gradient....conference paper 2017
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Lubelli, B. (author), van Hees, R.P.J. (author), Miedema, L. (author), Fugazzotto, M. (author), Sardella, A. (author), Bonazza, A. (author)Rising damp is a recurrent hazard to ancient buildings and its relevance is expected to increase in future, due to climate changes. In spite of the large diffusion of methods and products to stop rising damp, scientific literature on their effectiveness in the field is often scarce and not conclusive. This is particularly true for recent...conference paper 2016
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