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Jansen, K.M.B. (author)During the molding process residual stresses are formed due to thermal contraction during cooling as well as the local pressure history during solidification. In this paper a simple analytical model is reviewed which relates residual stresses, product shrinkage as well as warpage to the temperature and pressure histories during molding. Precise...conference paper 2015
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Fonseca, R.M. (author), Leeuwenburgh, O. (author), Della Rossa, E (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)We consider robust ensemble-based (EnOpt) multiobjective production optimization of on/off inflow-control devices (ICDs) for a sector model inspired by a real-field case. The use of on/off valves as optimization variables leads to a discrete control problem. We propose a reparameterization of such discrete controls in terms of switching times...conference paper 2015
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Skandali, M. (author), Jansen, K.M.B. (author), Koussios, S. (author), Sinke, J. (author), Benedictus, R. (author)The purpose of this study is to simulate the two-dimensional, transient and continuous heat transfer during the thermoset Automated Tape Laying (ATL) process. The heat transfer analysis is coupled with a cure kinetics model of the thermoset prepreg tapes used for the process. Unlike most studies, the process is modelled in a Lagrangian framework...conference paper 2015
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Jansen, S.J.T. (author)The decreasing importance of socio-economic factors in choosing a place to live gives more room to other motivational factors. These can be examined using affordance-based theory (Gibson, 1979), which explores what use the environment has to the user. In a telephone survey, 738 respondents were asked for their preferred residential environment...conference paper 2015
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Jansen, B. (author)Spreadsheets are widely used within companies and often form the basis for business decisions. Numerous cases are known where incorrect information in spreadsheets lead to incorrect decisions. Such cases underline the relevance of research on the professional use of spreadsheets. Recently a new dataset became available for research, containing...conference paper 2015
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Fatemi, S.A. (author), Jansen, J.D. (author), Rossen, W.R. (author)An enhanced-oil-recovery pilot test has multiple goals, among them to verify the properties of the EOR agent in situ. Given the complexity of EOR processes and the inherent uncertainty in the reservoir description, it is a challenge to discern the properties of the EOR agent in situ. We present a simple case study to illustrate this challenge: a...conference paper 2015
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Goncalves Dias De Barros, E. (author), Leeuwenburgh, O. (author), van den Hof, P.M.J. (author), Jansen, J.D. (author)This paper extends previous work on value of information (VOI) assessment in closed-loop reservoir management (CLRM) to estimate the added value of performing multiple measurements along the producing life of the reservoir. The new procedure is based on the workflow from our previous paper which allows to quantify the VOI of a single observation...conference paper 2015
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Mansoori, Mehdi (author), Dankers, Arne (author), van den Hof, P.M.J. (author), Jansen, J.D. (author), Rashtchian, Davood (author)We present a novel method for estimating physical properties of an underground hydrocarbon reservoir, on the basis of generally measured wellbore ow rate and pressure signals at the bottom of a producing well. The method uses instrumental variable-based system identification techniques to solve for a closed-loop errors-in-variables problem....conference paper 2015
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Fonseca, R.M. (author), Kahrobaei, S.S. (author), Van-Gastel, L. J T (author), Leeuwenburgh, O. (author), Jansen, J.D. (author)With an increase in the number of applications of ensemble optimization (EnOpt) for production optimization, the theoretical understanding of the gradient quality has received little attention. An important factor that influences the quality of the gradient estimate is the number of samples. In this study we use principles from statistical...conference paper 2015
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Jansen, J.D. (author), Rolvink, A. (author), Coenders, J.L. (author), Schevenels, M. (author)This paper presents the development of a multidisciplinary optimisation system for the Architecture Engineering and Construction (AEC) industry. The system consists of two major components, namely a multidisciplinary optimisation framework and a distributed cloud-based analysis framework. The former utilises an interactive optimisation search...conference paper 2014
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Barros, E.G.D. (author), Jansen, J.D. (author), Van den Hof, P.M.J. (author)This paper proposes a new methodology to perform value of information (VOI) analysis within a closed-loop reservoir management (CLRM) framework. The workflow combines tools such as robust optimization and history matching in an environment of uncertainty characterization. The approach is illustrated with two simple examples: an analytical...conference paper 2014
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Van der Meer, J.M. (author), Van Odyck, D.E.A. (author), Wirnsberger, P. (author), Jansen, J.D. (author)If secondary hydrocarbon recovery methods fail because of the occurrence of gravity override or viscous fingering one can turn to an enhanced oil recovery method like the injection of foam. The generation of foam can be described by a set of partial differential equations with strongly nonlinear functions, which impose challenges for the...conference paper 2014
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Kahrobaei, S. (author), Mansoori, M. (author), Joosten, G.J.P. (author), Van den Hof, P.M.J. (author), Jansen, J.D. (author)It is well known that parameter updating of large-scale numerical reservoir flow models (a.k.a. ‘computer assisted history matching’) is an ill-posed inverse problem. Typically the number of uncertain parameters in a reservoir flow model is very large whereas the available information for estimating these parameters is limited. The classic...conference paper 2014
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Fonseca, R.M. (author), Stordahl, A. (author), Leeuwenburgh, O. (author), Van den Hof, P.M.J. (author), Jansen, J.D. (author)We consider robust ensemble-based multi-objective optimization using a hierarchical switching algorithm for combined long-term and short term water flooding optimization. We apply a modified formulation of the ensemble gradient which results in improved performance compared to earlier formulations. We also apply multi-dimensional scaling to...conference paper 2014
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Terwel, K.C. (author), Jansen, S.J.T. (author)From forensic investigation it is known that many structural failures can be attributed to human errors and organizational factors. To provide project leaders with information on the current state of factors in the building process influencing structural safety, we developed a quick assessment tool. Logistic regression was used, based on data of...conference paper 2014
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Motta Dias, M.H. (author), Jansen, K.M.B. (author), Luinge, H. (author), Nayak, K. (author), Bersee, H.E.N. (author)The influence of fiber-matrix adhesion on the linear viscoelastic creep behavior of as received and surface modified carbon fiber (AR-CF and SM-CF, respectively) reinforced polyphenylene sulfide (PPS) composite materials was investigated. Short-term tensile creep tests were performed on ±45° specimens under four different isothermal condition;...conference paper 2014
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Heydra, C.G. (author), Jansen, R.J. (author), Van Egmond, R. (author)This paper focuses on the design of an auditory signal for the Automatic Number Plate Recognition system of Dutch national police. The auditory signal is designed to alert police officers of suspicious cars in their proximity, communicating priority level and location of the suspicious car and taking into account the auditory environment of the...conference paper 2014
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Lelieveld, C. (author), Jansen, K.M.B. (author)A composite structure consisting of a Shape Memory Polymer (SMP) matrix and three Shape Memory Alloy (SMA) strips was constructed. The SMA strips act as actuators which create forward and backward angle bends of 90 degrees of the composite structure. The function of the polymer matrix was to give the structure enough stiffness. During the...conference paper 2013
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Jansen, R.J. (author), Van Egmond, R. (author), De Ridder, H. (author), Silvester, S. (author)Operational police work can be characterized by the continuous switching between surveillance, responding to incidents, and office activities. Transitions between these activities are initiated by radio contact, messages on a mobile data terminal, or personal observations. The “information environment” emerging from these channels may cause...conference paper 2013
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Diba, M. (author), Löwik, D.W.P.M. (author), Van Hest, J.C.M. (author), Jansen, J.A. (author), Leeuwenburgh, S.C.G. (author)Noncovalent bonds are often reversible and sensitive to external stimuli. Although noncovalent interactions are inherently weak and generally perceived as inadequate to construct macroscopic materials of sufficient integrity and cohesion, the emergence of nanotechnology has shown that the intrinsic weakness of noncovalent interactions can be...conference paper 2013