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Mulder, W.A. (author)Since most of the easy hydrocarbon reservoirs have been found, accurate sub-surface imaging for oil and gas exploration and production is crucial. Seismic data can provide a band-limited reconstruction of impedance contrasts between different rock formations as well as a subsurface velocity model. Current compute power allows for the use of the...conference paper 2012
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- Schelling, J. (author), Leurs, B. (author), Best, S. (author), Mulder, I.J. (author) conference paper 2012
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D'Engelbronner, J.G. (author), Mulder, M. (author), Van Paassen, M.M. (author), De Stigter, S. (author), Huisman, H. (author)Air traffic capacity is mainly bound by air traffic controller workload. In order to effectively find solutions for this problem, off-line pre-experimental workload assessment methods are desirable. In order to better understand the workload associated with air traffic control, previous research introduced the static Solution Space as a possible...conference paper 2010
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Minisini, S. (author), Mulder, W.A. (author), Zhebel, E. (author), Kononov, A. (author)Abstract only.conference paper 2012
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Mulder, W.A. (author)Mass-lumped continuous finite elements provide accurate solutions of the second-order acoustic or elastic wave equation in complex geological settings, in particular in the presence of topography and large impedance contrasts. Elements of higher polynomial degree have better accuracy than those of lower degree but are also more costly. Here, the...conference paper 2013
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Vernay, A.L. (author), Pandis, S. (author), Saldeco Rahola, T.B. (author), Mulder, K. (author), Brandt, N. (author)Today, many new urban areas, such as cities, towns, villages, or districts, are being built worldwide and their completion requires the development of a number of infrastructures. Traditionally, these infrastructures are planned in parallel. However, increased environmental awareness is pushing cities to improve their environmental performance....conference paper 2011
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Van Waart, P. (author), Mulder, I.J. (author), De Bont, C. (author)Emerging pervasive technologies such as the Internet of Things and Open Data will have severe impact on the experience, interactions and wellbeing of citizens in future smart cities. Local governments are concerned how to engage and embed citizens in the process of smart city development because without them it is difficult for governments and...conference paper 2015
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Snelder, M. (author), Drolenga, H. (author), Mulder, M. (author)Verstoringen op de weg, zoals incidenten, kunnen tot onverwacht grote vertragingen van soms wel meer dan een uur per persoon leiden. Dit geeft aan dat het wegennet kwetsbaar (niet robuust) is. In 2009 heeft Rijkswaterstaat een begrippenkader en indicatoren voor robuustheid opgesteld (Snelder et al., 2009). Hierbij is robuustheid gedefinieerd als...conference paper 2011
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De Visser, C.C. (author), Mulder, J.A. (author)A new method is proposed for the identification of global nonlinear models of aircraft non-dimensional force and moment coefficients. The method is based on a recent type of multivariate spline, the multivariate simplex spline, which can accurately approximate very large, scattered nonlinear datasets in any number of dimensions. The new...conference paper 2010
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Klomp, R.E. (author), Mulder, M. (author), Van Paassen, M.M. (author), Roerdink, M.I. (author)In the coming decades, the task of an air traffic controller is expected to shift to one of strategic, trajectorybased air traffic management. This form of air traffic control is no longer possible without the help of automated support tools. In previous research, it has been shown that the time-space diagram, combined with a conventional plan...conference paper 2011
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Wirianto, M. (author), Mulder, W.A. (author), Slob, E.C. (author)In the application of controlled source electromagnetics for reservoir monitoring on land, the timelapse signal measured with a surface-to-surface acquisition can reveal the lateral extent on the surface of resistivity changes at depth in a hydrocarbon reservoir under production. However, a direct interpretation of the time-lapse signal may...conference paper 2012
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Kazei, V.V. (author), Kashtan, B.M. (author), Troyan, V.N. (author), Mulder, W.A. (author)It is generally believed that full waveform inversion needs very low frequencies in the data to avoid convergence to a local minimum, which would lead to an incorrect velocity model. Often, low frequencies are not present in the data. Then, a kinematically accurate initial model is required that contains the long-wavelength structures that...conference paper 2013
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De Jong, P.M.A. (author), De Vos, K. (author), Borst, C. (author), Van Paassen, M.M. (author), Mulder, M. (author)Two of the major projects in ATM development, SESAR and NextGen, both fore- cast the use of 4D trajectories as an intermediate phase in the development of full Performance Based Trajectories. Using 4D trajectories, the full positional and time coordinates of the aircraft are known throughout the planned trajectory. During approach, when reduced...conference paper 2011
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Kazei, V.V. (author), Ponomarenko, A.V. (author), Troyan, V.N. (author), Kashtan, B.M. (author), Mulder, W.A. (author)Full waveform inversion suffers from local minima, due to a lack of low frequencies in the data. A reflector below the zone of interest may, however, help in recovering the long-wavelength components of a velocity perturbation, as demonstrated in a paper by Mora. With the Born approximation for the perturbation in a reference model consisting of...conference paper 2012
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Cleij, D. (author), Venrooij, J. (author), Pretto, P. (author), Pool, D.M. (author), Mulder, M. (author), Bülthoff, H.H. (author)Motion cueing algorithms (MCA) are used in motion simulation to map the inertial vehicle motions onto the simulator motion space. To increase fidelity of the motion simulation, these MCAs are tuned to minimize the perceived incoherence between the visual and inertial motion cues. Despite time-invariant MCA dynamics the incoherence is not...conference paper 2015
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Le Ngoc, L. (author), Borst, C. (author), Mulder, M. (author), Van Paassen, M.M. (author)The usage of heads-down, non-conformal synthetic vision displays for landings below minimums has inherent problems during the flare due to minification effects. Literature showed that pilots can use four visual cues to perform a manual flare maneuver. Amongst their strategies, the Jacobson flare method seemed the most suitable to provide flare...conference paper 2010
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Zhebel, E. (author), Minisini, S. (author), Mulder, W.A. (author)We solve the three-dimensional acoustic wave equation, discretized on tetrahedral meshes. Two methods are considered: mass-lumped continuous finite elements and the symmetric interior-penalty discontinuous Galerkin method (SIP-DG). Combining the spatial discretization with the leap-frog time-stepping scheme, which is second-order accurate and...conference paper 2012
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Henze, L.A.R. (author), Mulder, I.J. (author), Stappers, P.J. (author)The increased complexity in Product Service Systems development goes hand in hand with complex heterogeneous networks. A Human-Centred Design approach has been taken to understand such networked collaboration and to develop a framework having user-experiences guiding communication and collaboration among parties. The current work elaborates on...conference paper 2013
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Lu, T. (author), Pool, D.M. (author), Van Paassen, M.M. (author), Mulder, M. (author)With the development of moving-based flight simulators in mind, a large number of researchers have considered human manual control behavior in tasks where the motion of the controlled vehicle can be felt by the pilots. While it is known that the dynamics of the controlled vehicle are a key factor that determines the usefulness of motion feedback...conference paper 2015
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Modave, A. (author), St-Cyr, A. (author), Warburton, T. (author), Mulder, W.A. (author)Improving both the accuracy and computational performance of simulation tools is a major challenge for seismic imaging, and generally requires specialized algorithms and computational implementations to make full use of modern hardware architectures. We present a computational strategy based on a highorder discontinuous Galerkin time-domain...conference paper 2015