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Helisto, N. (author), Kiviluoma, J. (author), Morales España, G.A. (author), O'Dwyer, C. (author)Planning of future energy systems with higher prevalence of wind and solar energy requires a careful representation of the temporal and operational characteristics of the system in the investment planning model. This study aims to identify the aspects that should be considered when selecting the representation for a particular system. To...article 2021
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Butt A.A., (author), Vries S.B. de, (author), Loonen R.C.G.M., (author), Hensen J.L.M., (author), Stuiver A., (author), Ham J.E.J. van den, (author), Erich B.S.J.F., (author)Thermochromic (TC) materials can switch solar absorptance (α) based on temperature stimuli. When coatings with TC properties are applied on building envelope surfaces, the amount of solar heat gains can be controlled to reduce the heating and cooling demand of buildings. To date, limited research has been conducted in investigating optimal TC...article 2021
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- Abokersh, M.H. (author), Gangwar, S. (author), Spiekman, M.E. (author), Valles, M. (author), Jimenez, L. (author), Boer, D. (author) article 2021
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Pijnappel, T.R. (author), van den Berg, J.L. (author), Borst, S.C. (author), Litjens, R. (author)Drone base stations can help safeguard coverage and provide capacity relief when cellular networks are under stress. Examples of such stress scenarios are events with massive crowds or network outages. In this paper we focus on a disaster scenario with emergence of a traffic hotspot, where agile drone positioning and load management is a...conference paper 2021
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Sinapis, K. (author), Konstantinos, T. (author), Dörenkämper, M. (author), van Sark, W.G.J.H.M. (author)Partial shading is widely considered to be a limiting factor in the performance of photovoltaic (PV) systems applied in urban environments. Modern system architectures, combined with per module deployment of power electronics, have been used to improve performance, especially at heterogeneous irradiance conditions, but they come with a high...article 2021
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Barros, E.G.D. (author), van Aken, B.B. (author), Burgers, A.R. (author), Sloof-Hoek, L.H. (author), Fonseca, R.M. (author)The scarcity of land near energy demand poses the challenge of designing multi-functional solar parks in terms of land use in some countries. This requires solutions accounting for multiple conflicting objectives, e.g., power generation and multi-functional use of the land (agricultural, construction, ecological). Moreover, the performance of...article 2021
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Post, B. (author), Borst, S. (author), van den Berg, J.L. (author)Due to the rising concerns of energy consumption in wireless networks, base station (BS) sleeping strategies were introduced to save energy in low traffic scenarios. In this paper we analyse a weighted trade-off between energy consumption and user-perceived performance in dense cellular networks. We present an optimization problem representing...article 2021
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Hagen, A. (author), Christensen, J.O. (author), Sudireddy, B.R. (author), Balomenou, S. (author), Tsiplakides, D. (author), Papazisi, K.M. (author), Zaravelis, F. (author), Neofytidis, C. (author), Ioannidou, E. (author), Neophytides, S. (author), Niakolas, D. (author), Coppola, N. (author), Maritato, L. (author), Polverino, P. (author), Carapella, G. (author), Ferchaud, C.J. (author), Berkel, F. (author), Vulliet, J. (author), Laurencin, J. (author)In a time, where first Solid oxide based systems enter demonstration and commercial markets, the European NewSOC project focusses on next generations. It aims at significantly improving performance, durability, and cost competitiveness of solid oxide cells & stacks compared to state-of-the-art (SoA). In order to achieve these goals, NewSOC...conference paper 2021
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Natali, A. (author), Isufi, E. (author), Coutino, M. (author), Leus, G. (author)Topology identification is an important problem across many disciplines, since it reveals pairwise interactions among entities and can be used to interpret graph data. In many scenarios, however, this (unknown) topology is time-varying, rendering the problem even harder. In this paper, we focus on a time-varying version of the structural...conference paper 2021
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Nadi, A. (author), York-Smith, N. (author), van Lint, J.W.C. (author), Tavasszy, L.A. (author), Snelder, M. (author)The spatial and temporal catachrestic of freight road transport is important to study daily patterns of freight activities. This requires a model that can reproduce these spatial-temporal patterns. This paper proposes a surrogate-based optimization method to calibrate a data-driven time-dependent vehicle routing and scheduling model that can be...conference paper 2021
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Raftopoulou, M. (author), Litjens, R. (author)Network slicing has been introduced in 5G networks as an enabling feature for the effective Quality of Service (QoS) provisioning to multiple service classes with distinct performance requirements. When applied in the Radio Access Network (RAN), a class-specific slice is assigned a set of radio resources and can furthermore be optimally...conference paper 2021
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Chiscop, I. (author), Nauta, J.C. (author), Veerman, B. (author), Phillipson, F. (author)The Multi-Service Location Set Covering Problem is an extension of the well-known Set Covering Problem. It arises in practical applications where a set of physical locations need to be equipped with services to satisfy demand within a certain area, while minimizing costs. In this paper we formulate the problem as a Quadratic Unconstrained Binary...conference paper 2020
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- Bruijns, L.A.M. (author), Phillipson, F. (author), Sangers, A. (author) conference paper 2020
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- Xia, L. (author), de Jager, B. (author), Donkers, T. (author), Willems, F. (author) article 2020
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Minaeva, A. (author), Roy, D. (author), Akesson, B. (author), Hanzalek, Z. (author), Shakraborty, S. (author)Automotive software implements different functionalities as multiple control applications sharing common platform resources. Although such applications are often developed independently, the control performance of the resulting system depends on how these applications are integrated. A key integration challenge is to efficiently schedule these...conference paper 2020
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Egberts, P.J.P. (author), Tümer, C. (author), Loh, K.K.L. (author), Octaviano, R. (author)Different stakeholders have different design considerations that shape a heating grid. In short term, theserange from achieving lowest ownership costs to preventing monopolies. In long term, project developersfocus on how uncertainties of design parameters (e.g. demand/supply, heat prices) affect the grid designand, ultimately, the business case...article 2020
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Davydenko, I. (author), Hopman, M. (author), Spreen, J.S. (author)Transport and logistics is one of the most important economic sectors contributing to the climate change. By the nature of transport and logistics operations, the sector is one of the most difficult ones to decarbonize. This paper proposes using carbon footprinting tools to optimize logistics operations with respect to emissions, and to setup...conference paper 2020
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Farkas, S. (author), Agocs, T. (author), Atkins, C. (author), Brouwers, L. (author), Dufils, J. (author), Joo, A. (author), MezA', G. (author), Morris, K. (author), Rodenhuis, M. (author), Roulet, M. (author), Schnetler, H. (author), Snell, R. (author), Tenegi Sanginés, F. (author), Vega-Moreno, A. (author), van de Vorst, L.T.G. (author)A possible answer to the challenge brought by the construction of the next generation 40 m-class telescopes was the case study of FAME (Freeform Active Mirror Experiment). As the new instruments typically increased in both volume and complexity, the use of highly aspherical freeform surfaces could be a great solution as these systems are built...conference paper 2020
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Tajdari, F. (author), Berkhoff, A.P. (author), de Boer, A. (author)This paper studies an acoustic source with a relatively small thickness and a high bending stiffness. The acoustic source operates in the low frequency, quasi-static regime. The focus of the current study is on the actuation part in order to design an appropriate excitation mechanism. A flexural mechanism is modeled in combination with a...article 2020
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