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Janssen, M.F.W.H.A. (author), Klievink, B. (author)Purpose – In the process of transformation, governments have to deal with a host of stakeholders and complex organizational and technical issues. In this viewpoint paper, an argument is made in favour of using gaming and simulation as tools designed to aid the transformation and reengineering of government. Based on the argument, a research...journal article 2010
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Namdar Zanganeh, M. (author), Kraaijevanger, J.F.B.M. (author), Buurman, H.W. (author), Jansen, J.D. (author), Rossen, W.R. (author)We apply adjoint-based optimization to a Surfactant-Alternating-Gas foam process using a linear foam model introducing gradual changes in gas mobility and a nonlinear foam model giving abrupt changes in gas mobility as function of oil and water saturations and surfactant concentration. For the linear foam model, the objective function is a...journal article 2014
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Schach, M.O. (author), Oyarzun, B.A. (author), Schramm, H. (author), Schneider, R. (author), Repke, J.U. (author)Processes for carbon capture and storage have the drawback of high energy demand. In this work the application of CO2 capture by anti-sublimation is analyzed. The process was simulated using Aspen Plus. Process description is accomplished by phase equilibria models which are able to reproduce the vapor-liquid and vapor-solid equilibria....journal article 2011
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Taale, H. (author), Hoogendoorn, S.P. (author), Legius, P. (author)For some on-ramps, which cause congestion on the motorway, it is not possible to install a ramp metering system for geometric or other reasons. But sometimes it is possible to meter traffic with the traffic lights of nearby intersections in such a way that the situation on the motorway improves and on the urban network the situation does not get...journal article 2015
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Liu, P. (author)This paper presents the more salient results of an experimental and numerical study on jack-up dynamic behavior. The laboratory studies of three principle jack-up platform models were carried out in both regular and irregular waves. The data from irregular wave tests were analyzed in both the probability domain and frequency domain supported by...journal article 1991
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Solntsev, S. (author), Zeman, M. (author)In thin-film silicon solar cells (TFSC) efficient light management is essential in order to increase energy conversion efficiency. The application of nano-scale periodic gratings (PG) is a promising method to enhance absorption in the absorber layers of TFSC since they can efficiently scatter the incident light. Carefully designed gratings give...journal article 2011
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Jie, L. (author), Fangfang, Z. (author), Van Zuylen, H.J. (author), Shoufeng, L. (author)Micro simulation programs are often used to assess the quality of traffic conditions. They are especially suited to evaluate possible control scenarios in advance, so that the scenarios can be selected and optimized before implementation. Of course, the simulation programs should be valid for the traffic situation that has to be modeled with...journal article 2011
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Klievink, B. (author), Janssen, M. (author)Improving public service delivery is a very complex domain and the complexity is difficult to grasp by stakeholders having various degree of knowledge and involvement. An emergent and promising method for dealing with complex problems is simulation gaming, which can be used to capitalize the intrinsic experiences and knowledge of people and...journal article 2010
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Tamminga, G.F. (author), Knoppers, P. (author), Van Lint, J.W.C. (author)Open Traffic is an open source software project that provides a transport modeling software environment. While most transport model packages offer ready-to-use modules for end-users, Open Traffic provides open access to a modelling environment for the (further) development of methods and algorithms and enables the sharing, distribution and...journal article 2014
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Chappin, E.J.L. (author), Dijkema, G.P.J. (author)A framework for the modeling and simulation of transitions is presented. A transition, “substantial change in the state of a socio-technical system”, typically unfolds over a long timespan. We therefore suggest to use simulation to inform transition managers on the effect of their decisions. Transition models preferably meet five functional...journal article 2015
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Buzink, S.N. (author), Christie, L.S. (author), Goossens, R.H.M. (author), De Ridder, H. (author), Jakimowicz, J.J. (author)Background - The aim of this study is to investigate the influence of the presence of anatomic landmarks on the performance of angled laparoscope navigation on the SimSurgery SEP simulator. Methods - Twenty-eight experienced laparoscopic surgeons (familiar with 30º angled laparoscope, >100 basic laparoscopic procedures, >5 advanced laparoscopic...journal article 2010
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Malan, D.F. (author), Van der Walt, S.J. (author), Raidou, R.G. (author), Van den Berg, B. (author), Stoel, B.C. (author), Botha, C.P. (author), Nelissen, R.G.H.H. (author), Valstar, E.R. (author)Purpose In orthopaedics, minimally invasive injection of bone cement is an established technique. We present HipRFX, a software tool for planning and guiding a cement injection procedure for stabilizing a loosening hip prosthesis. HipRFX works by analysing a pre-operative CT and intraoperative C-arm fluoroscopic images. Methods HipRFX simulates...journal article 2015
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Vermeer, K.A. (author), Lo, B. (author), Zhou, Q. (author), Vos, F.M. (author), Vossepoel, A.M. (author), Lemij, H.G. (author)Monitoring glaucoma patients and ensuring optimal treatment requires accurate and precise detection of progression. Many glaucomatous progression detection strategies may be formulated for Scanning Laser Polarimetry (SLP) data of the local nerve fiber thickness. In this paper, several strategies, all based on repeated GDx VCC SLP measurements,...journal article 2011
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Bosse, T. (author), Jonker, C.M. (author), Treur, J. (author)This paper presents a formal analysis of design process dynamics. Such a formal analysis is a prerequisite to come to a formal theory of design and for the development of automated support for the dynamics of design processes. The analysis was geared toward the identification of dynamic design properties at different levels of aggregation. This...journal article 2010
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Seifert, S. (author), Van Dam, H.T. (author), Huizenga, J. (author), Vinke, R. (author), Dendooven, P. (author), Löhner, H. (author), Schaart, D.R. (author)In a silicon photomultiplier (SiPM), also referred to as multi-pixel photon counter (MPPC), many Geiger-mode avalanche photodiodes (GM-APDs) are connected in parallel so as to combine the photon counting capabilities of each of these so-called microcells into a proportional light sensor. The discharge of a single microcell is relatively well...journal article 2009
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Walker, W.E. (author), Giddings, J. (author), Armstrong, S. (author)Recent advances in computers, networking, and telecommunications offer new opportunities for using simulation and gaming as methodological tools for improving crisis management. It has become easy to develop virtual environments to support games, to have players at distributed workstations interacting with each other, to have automated...journal article 2011
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Verdaasdonk, E.G. (author), Dankelman, J. (author), Lange, J.F. (author), Stassen, L.P.S. (author)Background - It is desirable that surgical trainees are proficient in basic laparoscopic motor skills (eye–hand coordination). The present study evaluated the use of predefined proficiency criteria on a basic virtual reality (VR) simulator in preparation for a laparoscopic course on animal models. Methods - Twenty-eight surgical trainees who...journal article 2008
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Chevtchenko, O. (author), Zuijderduin, R. (author), Smit, J. (author), Willen, D. (author), Lentge, H. (author), Thidemann, C. (author), Traeholt, C. (author), Melnik, I. (author), Geschiere, A. (author)are: a cable has to fit in an annulus of 160 mm, with two cooling stations at the cable ends only. Existing solutions for HTS cables would lead to excessively high coolant pressure drop in the cable, potentially affecting public acceptance of the project. A way out would be to substantially reduce AC losses from 1 down to about 0.1 W/m per phase...journal article 2012
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Bellsola Olba, X. (author), Daamen, W. (author), Vellinga, T. (author), Hoogendoorn, S.P. (author)Port capacity is a relevant parameter to estimate the expected performance of a port facility. Many simulation models have been used to predict traffic in ports and waterways, but they do not include provisions for estimating the port’s capacity. The innovative method presented here determines a Port Network Traffic Capacity (PNTC) based on...journal article 2015
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Asamer, J. (author), Van Zuylen, H.J. (author), Heilmann, B. (author)Calibrated simulation models taking into account adverse weather conditions can be used to optimise traffic management strategies, such as speed adaptation and signal timing optimisation. On snowy road conditions, car following behaviour changes because drivers tend to accelerate more slowly, increase their following distance and drive with...journal article 2013