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Kammouh, O. (author), Nogal Macho, M. (author), Binnekamp, R. (author), Wolfert, A.R.M. (author)The wellbeing of modern societies is dependent upon the functioning of their infrastructure networks. This paper introduces the 3C concept, an integrative multi-system and multi-stakeholder optimization approach for managing infrastructure interventions (e.g., maintenance, renovation, etc.). The proposed approach takes advantage of the...journal article 2021
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Horta Ferreira da Silva, F. (author), Torres-Knoop, Ariana (author), Coopmans, T.J. (author), Maier, D.J. (author), Wehner, S.D.C. (author)Long-distance quantum communication via entanglement distribution is of great importance for the quantum internet. However, scaling up to such long distances has proved challenging due to the loss of photons, which grows exponentially with the distance covered. Quantum repeaters could in theory be used to extend the distances over which...journal article 2021
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Jimenez-Lluva, David (author), Root, B.C. (author)Despite the ongoing advancements in low-thrust propulsion technology and the rise of all-electric satellite platforms, low-thrust spacecraft trajectory optimization remains a complex field of research. Shape-based approximations are predominant in interplanetary applications, but they are generally unsuitable for many-revolution trajectories,...journal article 2020
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Ahmadi, Arman (author), Nasseri, M. (author)Hydrological models are simplified imitations of natural and man-made water systems, and because of this simplification, always deal with inherent uncertainty. To develop more rigorous modeling procedures and to provide more reliable results, it is inevitable to consider and estimate this uncertainty. Although there are different approaches...journal article 2020
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Szymula, Christopher (author), Bešinović, Nikola (author)The performance and behaviour of critical infrastructure in case of disruptions is an important topic and we are still lacking of insights. Due to disruptions, infrastructure becomes unavailable and may force the trains and passengers to adapt. In this paper, we introduce a problem of railway network vulnerability from the perspective of...journal article 2020
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Kocaman, E. S. (author), Chen, B. Y. (author), Pinho, S. T. (author)Design and optimisation of large structures, including the positioning of lower-level components, typically require extensive user involvement and sequential mechanical analysis/optimisation iterations. This paper presents an original method that enables adaptive positioning of lower-level models (such as components) within higher level...journal article 2020
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Blankert, Bastiaan (author), Vrouwenvelder, J.S. (author), Witkamp, Geert Jan (author), Ghaffour, Noreddine (author)In this study, we analyzed the heat requirement of membrane distillation (MD) to investigate the trade-off between the evaporation efficiency and driving force efficiency in a single effect MD system. We found that there exists a non-zero net driving temperature difference that maximizes efficiency. This is the minimum net driving temperature...journal article 2020
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Sedighiani, K. (author), Diehl, M. (author), Traka, K. (author), Roters, F. (author), Sietsma, J. (author), Raabe, D. (author)A severe obstacle for the routine use of crystal plasticity models is the effort associated with determining their constitutive parameters. Obtaining these parameters usually requires time-consuming micromechanical tests that allow probing of individual grains. In this study, a novel, computationally efficient, and fully automated approach is...journal article 2020
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de Bruin, T.D. (author), Kober, J. (author), Tuyls, Karl (author), Babuska, R. (author)Deep reinforcement learning makes it possible to train control policies that map high-dimensional observations to actions. These methods typically use gradient-based optimization techniques to enable relatively efficient learning, but are notoriously sensitive to hyperparameter choices and do not have good convergence properties. Gradient...journal article 2020
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Codrignani, A. (author), Savio, D. (author), Pastewka, L. (author), Frohnapfel, B. (author), van Ostayen, R.A.J. (author)In this work we assess the applicability of the adjoint optimization technique for determining optimal surface topographies of two surfaces in relative motion in presence of a thin lubricant films that can cavitate. Among the existing numerical tools for topology optimization in engineering problems, the adjoint method represents a promising...journal article 2020
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Conceicao Pereira, L. (author), Correia, Gonçalo (author), Tavares, José Pedro (author)With automated vehicles (AVs), reversible lanes could be a sustainable transportation solution once there is vehicle-to-infrastructure connectivity informingAVs about the lane configuration changes. This paper introduced the reversible lane network design problem (RL-NDP), formulated in mixed-integer non-linear mathematical programming-both...journal article 2020
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Cincotta, Salvatore (author), Khakzad, N. (author), Cozzani, Valerio (author), Reniers, G.L.L.M.E. (author)Domino effects triggered by fire can cause extremely severe damages to the chemical and process plants. In the need of a more effective prevention of fire domino effects, the present study focuses on firefighting which has received less attention compared to passive and active fire protection systems. Considering both the vulnerability and...journal article 2019
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van de Weg, Goof Sterk (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), De Schutter, B.H.K. (author)Freeway congestion can reduce the freeway throughput due to the capacity drop or due to blocking caused by spillback to upstream ramps. Research has shown that congestion can be reduced by the application of ramp metering and variable speed limits. Model predictive control is a promising strategy for the optimization of the ramp metering...journal article 2019
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Haverkort, J.W. (author)Using electrodes or catalytic layers that are porous increases the reactive surface area but also the distance that ions and electrons have to travel. Thicker electrodes, through their larger surface area, reduce the activation overpotential but increase the ohmic losses. There will therefore be an electrode thickness for which the voltage...journal article 2019
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Wiegmans, B. (author), Champagne-Gelinas, Alex (author), Duchesne, Samuël (author), Slack, Brian (author), Witte, Patrick (author)The main research problem has been analyzing and comparing the efficiencies of road and rail freight transport networks in different geographical contexts and derive policy suggestions from the results based on a dataset that spans multiple continents, covers multiple countries and covers a longer time period. For Europe, the benchmarking...journal article 2019
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Pecci, Filippo (author), Abraham, E. (author), Stoianov, Ivan (author)The optimal placement and operation of pressure control valves in water distribution networks is a challenging engineering problem. When formulated in a mathematical optimization framework, this problem results in a nonconvex mixed integer nonlinear program (MINLP), which has combinatorial computational complexity. As a result, the considered...journal article 2019
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Sophocleous, Sophocles (author), Savić, Dragan (author), Kapelan, Z. (author)This research article presents a model-based framework for detecting and localizing leaks in water distribution networks (WDNs). The framework uses optimization and systematic search space reduction. The method employs two stages: (1) the search space reduction (SSR) stage and (2) the leakage detection and localization stage (LDL). During SSR...journal article 2019
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Nakayama, S. (author), Blacquière, G. (author), Ishiyama, Tomohide (author)Blended acquisition along with efficient spatial sampling is capable of providing high-quality seismic data in a cost-effective and productive manner. While deblending and data reconstruction conventionally accompany this way of data acquisition, the recorded data can be processed directly to estimate subsurface properties. We establish a...journal article 2019
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Çubukçuoglu, C. (author), Ekici, B. (author), Tasgetiren, M. Fatih (author), Sariyildiz, I.S. (author)Most of the architectural design problems are basically real-parameter optimization problems. So, any type of evolutionary and swarm algorithms can be used in this field. However, there is a little attention on using optimization methods within the computer aided design (CAD) programs. In this paper, we present Optimus, which is a new...journal article 2019
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Increasing the load capacity of planar ferrofluid bearings by the addition of ferromagnetic materialBoots, A. S.T. (author), Krijgsman, L. E. (author), de Ruiter, B. J.M. (author), Lampaert, S.G.E. (author), Spronck, J.W. (author)Ferrofluid pocket bearings are a type of bearing that are able to carry a load using an air pocket encapsulated by a ferrofluid seal. Previously designed ferrofluid bearings show the great potential of the stick-slip-free and low viscous friction bearings, however until now the load capacity is limited. In this article a method is presented...journal article 2019