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Keyvan Ekbatani, M. (author), Gao, X. (author), Gayah, V.V. (author), Knoop, V.L. (author)Recent findings regarding macroscopic relationships of urban traffic measures such as the Macroscopic or Network Fundamental Diagram (MFD or NFD) have led to the development of novel traffic control strategies that can be applied at a network-wide level. One pertinent example is perimeter flow control (also known as gating or metering), which...conference paper 2016
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Bliemer, Michiel C J (author), Raadsen, MPH (author), Brederode, L.J.N. (author), Bell, MGH (author), Wismans, Luc J J (author), Smith, Mike J. (author)This paper presents a review and classification of traffic assignment models for strategic transport planning purposes by using concepts analogous to genetics in biology. Traffic assignment models share the same theoretical framework (DNA), but differ in capability (genes). We argue that all traffic assignment models can be described by three...journal article 2016
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Versteijlen, W.G. (author), Metrikine, A. (author), van Dalen, K.N. (author)A procedure is presented for the derivation of an effective small-strain soil stiffness governing the soil– structure interaction of large-diameter monopiles. As a first step, geophysical measurements are used to estimate the depth-dependent shear modulus G of the soil stratum. The second step is to use this modulus and an estimated Poisson’s...journal article 2016
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Knoop, V.L. (author), Daamen, W. (author)The fundamental diagram of a road, including free-flow capacity and queue discharge rate, is very important for traffic engineering purposes. In the real word, most traffic measurements come from stationary loop detectors. This paper proposes a method to fit Wu's fundamental diagram to loop detector data. Wu's fundamental diagram is...journal article 2016
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Knoop, V.L. (author), Hoogendoorn, S.P. (author)Microscopic and macroscopic dynamic traffic models not fast enough to run in an optimization loop to coordinate traffic measures over areas of twice a trip length (50x50 km). Moreover, in strategic planning there are models with a spatial high level of detail, but lacking the features of traffic dynamics. This paper introduces the Network...journal article 2015
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Vermolen, F.J. (author), Van der Meijden, R.P. (author), Van Es, M. (author), Gefen, A. (author), Weihs, D. (author)A phenomenological model is formulated to model the early stages of tumor formation. The model is based on a cell-based formalism, where each cell is represented as a circle or sphere in two-and three dimensional simulations, respectively. The model takes into account constituent cells, such as epithelial cells, tumor cells, and T-cells that...journal article 2015
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Ceelen, Marcel (author), van der Geer, C.J. (author), Rouwen, Floris (author), Seuren, Stijn (author)In this thesis, a swarm is defined as:<br/>”A swarm is a large number of homogenous, unsophisticated agents that interact locally<br/>among themselves and their environment, without any central control or management to<br/>yield a global behaviour to emerge.”<br/>The bigger perspective is to have the units within a swarm operate for a...bachelor thesis 2015
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Keyvan Ekbatani, M. (author), Papageorgiou, M. (author), Knoop, V.L. (author)Recent studies demonstrated the efficiency of feedback-based gating control in mitigating congestion in urban networks by exploiting the notion of network fundamental diagram (NFD). The employed feedback regulator of proportional-integral(PI)-type targets an operating NFD point of maximum throughput to enhance the mobility in the urban road...conference paper 2015
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Knoop, V.L. (author), van Lint, J.W.C. (author), Hoogendoorn, S.P. (author)Literature shows that–under specific conditions–the Macroscopic Fundamental Diagram (MFD) describes a crisp relationship between the average flow (production) and the average density in an entire network. The limiting condition is that traffic conditions must be homogeneous over the whole network. Recent works describe hysteresis effects:...journal article 2015
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Leclercq, L. (author), Parzani, Céline (author), Knoop, V.L. (author), Amourette, Jennifer (author), Hoogendoorn, S.P. (author)This paper investigates at an aggregated (macroscopic) scale the effects of route patterns on a road network. Four main variables are considered: the production, the mean speed, the outflow and the mean travel distance. First, a simple network with heterogeneous travel distances between origins and destinationsis studied by simulation. It...conference paper 2015
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Duives, D.C. (author), Daamen, W. (author), Hoogendoorn, S.P. (author)Whether pedestrian movements do or do not follow similar patterns as vehicular traffic while experiencing congestion is not entirely understood. Using data gathered during bottleneck experiments under laboratory conditions, the phenomenon of anticipation before entering congestion is studied. This paper provides proof that the movement behavior...journal article 2014
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Ferrari, A.C. (author), Dekker, C. (author), Vandersypen, L.M.K. (author), Van Der Zant, H.S.J. (author)We present the science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems, targeting an evolution in technology, that might lead to impacts and benefits reaching into most areas of society. This roadmap was developed within the framework of the European Graphene Flagship and outlines the main targets and...journal article 2014
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Ferreira, M.C. (author), Juliao, M.D. (author), Martins, C.J.A.P, (author), Monteiro, A.M.R.V.L. (author)We point out that existing astrophysical measurements of combinations of the fine-structure constant ?, the proton-to-electron mass ratio ? and the proton gyromagnetic ratio gpgp towards the radio source PKS1413+135 can be used to individually constrain each of these fundamental couplings. While the accuracy of the available measurements is not...journal article 2013
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De Jong, D. (author)Recently it has been proposed that the performance of a complete network can be represented graphically using only aggregated data for flow and density. The resulting graph is the macroscopic fundamental diagram (MFD), which relates the average flow (performance) to the number of vehicles in the network (accumulation). The resulting shape is...master thesis 2012
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Knoop, V.L. (author), Van Lint, J.W.C. (author), Hoogendoorn, S.P. (author)With current techniques, traffic monitoring and control is a data intensive process. Network control on a higher level, using high level variables, can make this process less data demanding. The macroscopic fundamental diagram relates accumulation, i.e. the number of vehicles in an area, to the network performance, but only holds for situations...conference paper 2011
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Geelhoed, B. (author)Pierre Gy’s theory for the sampling of particulate materials is widely applied and taught. A crucial part of Gy’s theory deals with the estimation, prediction and minimization of the variance of the Fundamental Sampling Error using a formula that is known as “Gy’s formula”. Experimental evidence, however, supports the conclusion that Gy’s...journal article 2011
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- Drenth, K.F. (author) conference paper 2010
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Qian, X. (author)This thesis project is a part of Dutch project PraktijkProef Amsterdam (PPA), in which the coordinated network traffic management in the regional area is analyzed. One of control levels in the project PPA is sub-networks, where the concept of the macroscopic fundamental diagram (MFD) is applied. Unlike a conventional link fundamental diagram, an...master thesis 2009
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Nannan, N.R. (author)Shock waves can be formed in all states of matter, be it in the single- or multi-phase condition, when the substance is subjected to a rapid change of state, e.g., a sudden pressure variation. In the case of shock waves in vapors and gases, because of the fact that the developed theory is often based on the ideal-gas equation of state, it is...doctoral thesis 2009
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Den Hollander, R.J.M. (author)This thesis treats efficient estimation algorithms for the epipolar geometry, the model underlying two views of the same scene or object. The epipolar geometry is computed from image correspondences that are found by local feature matching. These correspondences are used to calculate the fundamental matrix, which is the mathematical...doctoral thesis 2007