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Van der Krogt, M.G. (author), Van den Ham, G.A. (author), Kok, M. (author)
Flow sliding of submerged slopes in front of dikes can affect the reliability of flood defences. The occurrence of flow sliding may result, sometimes with delay, in a failure mode and consequent flooding. The current safety assessment method for flow sliding does not consider the interaction between flow sliding and failure modes which can cause...
conference paper 2015
document
Van der Krogt, M.G. (author), Van den Ham, G.A. (author), Kok, M. (author)
Flow sliding of submerged slopes in front of dikes can affect the reliability of flood defences. The occurrence of flow sliding may result, sometimes with delay, in a failure mode and consequent flooding. The current safety assessment method for flow sliding does not consider the interaction between flow sliding and failure modes which can cause...
conference paper 2015
document
Van der Krogt, H. (author), Klomp, A. (author), De Groot, J.H. (author), De Vlugt, E. (author), Van der Helm, F.C.T. (author), Meskers, C.G.M. (author), Arendzen, J.H. (author)
Background: Understanding movement disorder after stroke and providing targeted treatment for post stroke patients requires valid and reliable identification of biomechanical (passive) and neural (active and reflexive) contributors. Aim of this study was to assess test-retest reliability of passive, active and reflexive parameters and to...
journal article 2015
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Van der Krogt, H.J.M. (author), Meskers, C.G.M. (author), De Groot, J.H. (author), Klomp, A. (author), Arendzen, J.H. (author)
Background: Movement disorders after stroke are still captured by clinical gaze and translated to ordinal scores of low resolution. There is a clear need for objective quantification, with outcome measures related to pathophysiological background. Neural and non-neural contributors to joint behavior should be separated using different...
journal article 2012
document
Planken, L.R. (author), De Weerdt, M.M. (author), Van der Krogt, R. (author)
conference paper 2011
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Bregman, D.J.J. (author), Van der Krogt, M.M. (author), De Groot, V. (author), Harlaar, J. (author), Wisse, M. (author), Collins, S.H. (author)
Background In stroke and multiple sclerosis patients, gait is frequently hampered by a reduced ability to push-off with the ankle caused by weakness of the plantar-flexor muscles. To enhance ankle push-off and to decrease the high energy cost of walking, spring-like carbon-composite Ankle Foot Orthoses are frequently prescribed. However, it is...
journal article 2011
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Goorden, N. (author), Hakvoort, H. (author), Van der Krogt, R. (author)
In opdracht van Vitens is in 2005 een koppeling ontwikkeld op basis van de modelcodes van Modflow en Sobek. Deze koppelingssoftware is getest in pilot gebied Wierden, onderdeel van het Regge-stroomgebied (Gehrels en Hakvoort, 2005). De resultaten van de test wezen uit dat de ontwikkelde software een krachtig instrumentarium is dat inzetbaar is...
report 2009
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Harris, D.M. (author), Van der Krogt, Z.A. (author), Klaassen, P. (author), Raamsdonk, L.M. (author), Hage, S. (author), Van den Berg, M.A. (author), Bovenberg, R.A.L. (author), Pronk, J.T. (author), Daran, J.M. (author)
OA Fund TU Delft Background Since the discovery of the antibacterial activity of penicillin by Fleming 80 years ago, improvements of penicillin titer were essentially achieved by classical strain improvement through mutagenesis and screening. The recent sequencing of Penicillium chrysogenum strain Wisconsin1255-54 and the availability of...
journal article 2009
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author), Zhang, Y. (author)
conference paper 2008
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Planken, L. (author), De Weerdt, M.M. (author), Van der Krogt, R.P.J. (author)
The Simple Temporal Problem (STP) is a sub-problem of almost any planning or scheduling problem involving time constraints. An existing efficient method to solve the STP, called ?STP, is based on partial path consistency and starts from a chordal constraint graph. In this paper, we analyse this algorithm and show that there exist instances for...
conference paper 2008
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author), Zhang, Y. (author)
Multiagent planning methods are concerned with planning by and for a group of agents. If the agents are selfinterested, they may be tempted to lie in order to obtain an outcome that is more rewarding for them. We therefore study the multiagent planning problem from a mechanism design perspective, showing how to incentivise agents to be truthful....
conference paper 2008
document
Grogorescu, A.E. (author), Van der Krogt, M.C. (author), Van der Drift, E.W.J.M. (author), Hagen, C.W. (author)
journal article 2008
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Grigorescu, A.E. (author), Van der Krogt, M.C. (author), Hagen, C.W. (author)
journal article 2007
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Grigorescu, A.E. (author), Van der Krogt, M. (author), Hagen, C.W. (author)
Isolated dots and lines with 6 nm width were written in 20 nm thick Hydrogen silsesquioxane (HSQ) layers on silicon substrates, using 100 keV electron beam lithography. The main factors that might limit the resolution, i.e. beam size, writing strategy, resist material, electron dose, development process, are discussed. We demonstrate that, by...
conference paper 2007
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De Weerdt, M.M. (author), Van der Krogt, R.P.J. (author)
Distributed planning in a multiagent environment may give rise to inefficiencies. We study this effect focussing on the task allocation problem. We show that in the worst case, the result of a multiagent approach can be arbitrarily bad in theory when recontracting and multilateral deals are not allowed. This is a more precise result than was...
conference paper 2006
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author)
Plan library's have proven their added value to the efficiency of planning. In this paper, we present results on the use of a plan library to plan repair. We show that using a relatively simple library, we can already obtain significant improvements in efficiency compared to plan repair without a library.
conference paper 2005
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author)
In dynamic environments, agents have to deal with changing situations. In these cases, repairing a plan is often more efficient than planning from scratch, but existing planning techniques are more advanced than existing plan repair techniques. Therefore, we propose a straightforward method to extend planning techniques such that they are able...
conference paper 2005
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author)
We present a novel approach to multiagent planning for selfinterested agents. The main idea behind our approach is that multiagent planning systems should be built upon (singleagent) plan repair systems. In our system agents can exchange goals and subgoals through an auction, using their own heuristics or utility functions to determine when to...
conference paper 2005
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author)
Planning can be a valuable tool for supporting a wide array of real-world problems, such as logistics, manufacturing and control. However, these applications are often highly dynamic, resulting in plans that require updating. In such situations, plan repair methods can be used to adapt the plan. In this paper, we propose a general framework for...
report 2004
document
Van der Krogt, R.P.J. (author), De Weerdt, M.M. (author)
Plan repair has two faces. Alternately, a plan repair method looks like a planning method, or looks like a method that does exactly the opposite, i.e., removing actions from a plan. We propose a general framework for plan repair that shows the relation between these two alternating steps. Any plan repair method has this property. This claim is...
conference paper 2004
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