Searched for: department%3A%22Delft%255C%2BInstitute%255C%2Bof%255C%2BApplied%255C%2BMathematics%22
(321 - 340 of 407)
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- Morales Napoles, O. (author), Steenbergen, R.D.J.M. (author), Cooke, R.M. (author) conference paper 2010
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Groeneboom, P. (author), Jongbloed, G. (author), Witte, B.I. (author)We consider the problem of estimating the distribution function, the density and the hazard rate of the (unobservable) event time in the current status model. A well studied and natural nonparametric estimator for the distribution function in this model is the nonparametric maximum likelihood estimator (MLE). We study two alternative methods for...journal article 2010
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Dommers, S. (author), Van der Hofstad, R. (author), Hooghiemstra, G. (author)In this paper, we investigate the diameter in preferential attachment (PA-) models, thus quantifying the statement that these models are small worlds. The models studied here are such that edges are attached to older vertices proportional to the degree plus a constant, i.e., we consider affine PA-models. There is a substantial amount of...journal article 2010
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Melikyan, A. (author), Olsder, G.J. (author)Boundary-value problems for first order PDEs are locally considered, when the classical sufficient condition for the solution existence does not hold, but a solution still exists, possibly defined on one or both sides of the boundary surface. We note three situations when such a surface (locally) arises: (1) the part of the boundary surface with...journal article 2010
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Mirzaee, H. (author), Ryan, J.K. (author), Kirby, R.M. (author)The discontinuous Galerkin (DG) method continues to maintain heightened levels of interest within the simulation community because of the discretization flexibility it provides. Although one of the fundamental properties of the DG methodology and arguably its most powerful property is the ability to combine high-order discretizations on an...journal article 2010
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Dekking, M. (author), Don, H. (author)Let F1 and F2 be independent copies of one-dimensional correlated fractal percolation, with almost sure Hausdorff dimensions dimH(F1) and dimH(F2). Consider the following question: does dimH(F1) + dimH(F2) > 1 imply that their algebraic difference F1 ? F2 will contain an interval? The well known Palis conjecture states that ‘generically’ this...journal article 2009
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Fey, A. (author), Levine, L. (author), Peres, Y. (author)We study the abelian sandpile growth model, where n particles are added at the origin on a stable background configuration in Zd . Any site with at least 2d particles then topples by sending one particle to each neighbor. We find that with constant background height h ? 2d ? 2, the diameter of the set of sites that topple has order n1/d. This...journal article 2009
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Schramkowski, G.P. (author), De Swart, H.E. (author), Schuttelaars, H.M. (author)A three-dimensional numerical model with a prognostic salinity field is used to investigate the effect of a partial slip bottom boundary condition on lateral flow and sediment distribution in a transect of a tidally dominated channel. The transect has a symmetrical Gaussian cross-channel bottom profile. For a deep, well-mixed, tidally dominated...journal article 2009
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Roos, P.C. (author), Schuttelaars, H.M. (author)The classical problem of Taylor (Proc. Lond. Math. Soc., vol. 20, 1921, pp. 148–181) of Kelvin wave reflection in a semi-enclosed rectangular basin of uniform depth is extended to account for horizontally viscous effects. To this end, we add horizontally viscous terms to the hydrodynamic model (linearized depth-averaged shallow-water equations...journal article 2009
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Sumihar, J.H. (author)Two directions for improving the accuracy of sea level forecast are investigated in this study. The first direction seeks to improve the forecast accuracy of astronomical tide component. Here, a method is applied to analyze and forecast the remaining periodic components of harmonic analysis residual. This method is found to work reasonably well...doctoral thesis 2009
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- Van Neerven, J.M.A.M. (author) journal article 2009
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- Veraar, M.C. (author) journal article 2009
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Ter Brake, M.C. (author), Schuttelaars, H.M. (author)In many tidal embayments, bottom patterns, such as the channel-shoal systems of the Wadden Sea, are observed. To gain understanding of the mechanisms that result in these bottom patterns, an idealized model is developed and analyzed for short tidal embayments. In this model, the water motion is described by the depth- and width-averaged shallow...journal article 2009
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Fang, F. (author), Oosterlee, C.W. (author)We present a pricing method based on Fourier-cosine expansions for early-exercise and discretely-monitored barrier options. The method works well for exponential Lévy asset price models. The error convergence is exponential for processes characterized by very smooth () transitional probability density functions. The computational complexity is O...journal article 2009
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- Dajani, K. (author), Hartono, Y. (author), Kraaikamp, C. (author) journal article 2009
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Kunze, M. (author)We study continuity and equicontinuity of semigroups on norming dual pairs with respect to topologies defined in terms of the duality. In particular, we address the question whether continuity of a semigroup already implies (local/quasi) equicontinuity. We apply our results to transition semigroups and show that, under suitable hypothesis on E,...journal article 2009
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Jeltsema, D. (author), Scherpen, J.M.A. (author)Many physical systems, including mechanical, electrical, electromechanical, fluid, and thermal systems, can be modeled by the Langrangian and Hamiltonian equations of motion. A key aspect of the Langrangian and Hamiltonian frameworks is the role of energy storage. In this paper, equations regarding Langrangian and Hamiltonian are discussed and...journal article 2009
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Dubbeldam, J.L.A. (author), Olmsted, P.D. (author)We present an analytical study of a toy model for shear banding, without normal stresses, which uses a piecewise linear approximation to the flow curve (shear stress as a function of shear rate). This model exhibits multiple stationary states, one of which is linearly stable against general two-dimensional perturbations. This is in contrast to...journal article 2009
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De Wit, C. (author)The first Dynamic Positioning (DP) systems emerged in the 1960's from the need for deep water drilling by the offshore oil and gas industry, as conventional mooring systems, like a jack-up barge or an anchored rig, can only be used in shallow waters. GustoMSC has been developing DP drill ships since the early 1970's and it is still one of their...master thesis 2009
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Schuttelaars, H.M. (author), Dekking, F.M. (author), Berentsen, C. (author)In this paper, a random Cellular Automaton model is developed to characterise heterogeneity of geological formations. The CA-model is multilateral and can be easily applied in both two and three dimensions. We demonstrate that conditioning on well data is possible and the method is numerically efficient. To construct the model, the subsurface is...journal article 2009
Searched for: department%3A%22Delft%255C%2BInstitute%255C%2Bof%255C%2BApplied%255C%2BMathematics%22
(321 - 340 of 407)