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Kolodziejak, D.P.H. (author), Pham, T.H. (author), Hofman, T. (author), Wilkins, S. (author)This paper develops an optimization framework to minimize the Total Cost of Ownership (TCO) for Plug-in Hybrid Electric Vehicles (PHEVs). In this paper, TCO is the summation of operational and main vehicle powertrain components cost. The developed optimization framework is formulated via combining convex optimization and Dynamic Programming...conference paper 2019
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Boros, T. (author), Zuraniewski, P. (author), Hindriks, H.N. (author), Adrichem, N.L.M. (author), Thomas, E.D.R. (author), D'Acunto, L. (author)5G promises to offer a single network platform that can be optimized for several vertical industries and applications. It is envisioned that this optimization will be achieved through advanced network orchestration functionalities. Video streaming accounts for the vast majority of mobile traffic, hence optimizing performance and Quality of...conference paper 2019
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Mentink, P. (author), Seykens, X. (author)Complying to both the increasingly stringent pollutant emissions as well as (future) GHG emission legislation - with increased focus on in-use real-world emissions - puts a great challenge to the engine/aftertreatment control development process. Control system complexity, calibration and validation effort has increased dramatically over the...conference paper 2019
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Barros, E.G.D. (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)The exploitation of subsurface hydrocarbon reservoirs is achieved through the control of production and injection wells (i.e., by prescribing time-varying pressures and flow rates) to create conditions that make the hydrocarbons trapped in the pores of the rock formation flow to the surface. The design of production strategies to exploit these...article 2019
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Hanea, R.G. (author), Bjorlykke, O.P. (author), Hashmi, Y. (author), Feng, T. (author), Fonseca, R.M. (author)In this paper we present our results, challenges and learnings, over a two-year period wherein robust multi-objective optimization was applied at the Mariner asset which is being currently developed. Many different problems were solved with different objectives. These problems were formulated based on the phases of planning and development at...conference paper 2019
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Fransman, J.E. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B. (author)In this paper, Mine Counter-Measures (MCM) operations with multiple cooperative Autonomous Underwater Vehicles (AUVs) are examined within the Distributed Constraint optimization Problem (DCOP) framework. The goal of an MCM-operation is to search for mines and mine-like objects within a predetermined area so that ships can pass the area through a...conference paper 2019
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Willems, F. (author), van Gompel, P. (author), Seykens, X. (author), Wilkins, S. (author)This work gives an outlook on the potential of automated driving functions (ADFs) to reduce real-world CO2 and pollutant emissions for heavy-duty powertrains. Up to now, ADF research mainly focuses on increased traffic safety, driver comfort, and road capacity. Studies on emissions are lacking. By taking the driver out-of-the-loop, cycle-to...conference paper 2019
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Vazquez, A.R. (author), Goos, P. (author), Schoen, E.D. (author)Two-level orthogonal arrays of N runs, k factors, and a strength of 3 provide suitable fractional factorial designs in situations where many of the main effects are expected to be active, as well as some two-factor interactions. If they consist of N/2 mirror image pairs, these designs are fold-over designs. They are called even and provide at...article 2019
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Hu, J. (author), Yang, G. (author), Ziras, C. (author), Kok, K. (author)The future renewable-based power system will have an increased need for balancing power. Prosumers, having both generation and consumption capabilities, are expected to provide balancing power to the grid, if their flexibility can be appropriately managed. Meanwhile, undesirable line congestions and voltage violations may arise in the...article 2019
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Spini, G. (author), van Heesch, M.P.P. (author), Veugen, P.J.M. (author), Chatterjea, S. (author)Optimizing the workflow of a complex organization such as a hospital is a difficult task. An accurate option is to use a real-time locating system to track locations of both patients and staff. However, privacy regulations forbid hospital management to assess location data of their staff members. In this exploratory work, we propose a secure...article 2019
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Louizos, C. (author), Reisser, M. (author), Blankevoort, T. (author), Gavves, E. (author), Welling, M. (author)Neural network quantization has become an important research area due to its great impact on deployment of large models on resource constrained devices. In order to train networks that can be effectively discretized without loss of performance, we introduce a differentiable quantization procedure. Differentiability can be achieved by...conference paper 2019
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de Moraes, R.J. (author), Fonseca, R.M. (author), Helici, M.A. (author), Heemink, A.W. (author), Jansen, J.D. (author)We present an efficient workflow that combines multiscale (MS) forward simulation and stochastic gradient computation - MS-StoSAG - for the optimization of well controls applied to waterflooding under geological uncertainty. A two-stage iterative Multiscale Finite Volume (i-MSFV), a mass conservative reservoir simulation strategy, is employed as...article 2019
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Jonk, R.W.J. (author), Voeten, J.P.M. (author), Geilen, M.C.W. (author), Basten, A.A. (author), Schiffelers, R. (author)We develop a model-based approach to predict timing of service-based software applications on Linux-based multi-core platforms for alternative mappings (affinity and priority settings). Service-based applications consist of communicating sequential (Linux) processes. These processes execute functions (also called services), but can only execute...conference paper 2018
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Rozemuller, C. (author), Neerincx, M.A. (author), Hindriks, K.V. (author)Exploration games are games where agents (or robots) need to search resources and retrieve these resources. In principle, performance in such games can be improved either by adding more agents or by exchanging more messages. However, both measures are not free of cost and it is important to be able to assess the trade-off between these costs and...conference paper 2018
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van der Weijst, R. (author), van Keulen, T. (author), Willems, F.P.T. (author)Advanced control concepts are required to maximize the fuel-efficiency of Diesel engines and to comply with emission legislation. The aim of this paper is to develop a controller that fully utilizes the fuel-path and air-path hardware, and is adaptive for real-world disturbances. The control design comprises a feedback control system, which uses...conference paper 2018
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van der Linden, K. (author), de Weerdt, M. (author), Morales-Espana, G. (author)Abstract—In power systems, demand and supply always have to be balanced. This is becoming more challenging due to the sustained penetration of renewable energy sources and their inherit uncertain production. Because of the increasing amount of electrical vehicles (EVs), and the high capacity and flexibility of their charging process, EVs are a...conference paper 2018
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Hoekstra, G. (author), Phillipson, F. (author)This paper introduces the Multi-Service Capacitated Facility Location Problem for assigning equipment to access points. Here multiple services should be offfered to customers in a Smart City context. Purpose is to offer the total of sercives to fulfil the customer demand, given the coverage of the service and their capacity constraints. The...conference paper 2018
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Fransman, J. (author), Sijs, J. (author), Dol, H.S. (author), Theunissen, E. (author), de Schutter, B.D. (author)DCOP (Distributed Constraint optimization Problem) is a framework for representing distributed multi- agent problems. However, it only allows discrete values for the decision variables, which limits its application for real-world problems. In this paper, an extension of DCOP is investigated to handle variables with continuous domains....conference paper 2018
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Sioutas, S. (author), Stuijk, S. (author), Corporaal, H. (author), Basten, A.A. (author), Somers, L. (author)Memory-bound applications heavily depend on the bandwidth of the system in order to achieve high performance. Improving temporal and/or spatial locality through loop transformations is a common way of mitigating this dependency. However, choosing the right combination of optimizations is not a trivial task, due to the fact that most of them...conference paper 2018
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Mackay, L. (author), Guarnotta, R. (author), Dimou, A. (author), Morales-Espana, G. (author), Ramirez-Elizondo, L. (author), Bauer, P. (author)The emergence of distributed energy resources can lead to congestion in distribution grids. DC distribution grids are becoming more relevant as more sources and loads connected to the low voltage grid use dc. Bipolar dc distribution grids with asymmetric loading can experience partial congestion resulting in a nodal price difference between the...article 2018