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Showing 1 to 20 of 52 for “"Numerical approximation"”.
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Numerical approximation of generalized connecting orbits
… dynamische Systeme definiert, analysiert und ein Approximationsverfahren hierfür entwickelt. Insbesondere werden Fehlerabschätzungen für das Approximationsverfahren hergeleitet, die ansonsten in der Literatur nur in Spezialfällen bekannt sind.
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Numerical approximation of Stratonovich SDEs and SPDEs
We consider the numerical approximation of stochastic differential and partial differential equations S(P)DEs, by means of time-differencing schemes which are based on exponential integrator techniques. We focus on the study of two numerical schemes, both appropriate for the simulation of …
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A Numerical Approximation Technique for Filter Functions
Made available in DSpace on 2015-05-12T17:06:28Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6303301.PDF: 1709218 bytes, checksum: a17485cf38c85f958686a8f65cb3753d (MD5) Previous issue date: 1962
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Numerical Approximation of Multiphase Flows in Heterogeneous Porous Media
… an in-depth discussion and key contributions to numerical methods approximating multiphase flow problems in highly heterogeneous porous media. We first highlight important background information, motivations, governing equations, and past results to the numerical analysis of such problems. …
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Numerical approximation and identification problems for singular neutral equations
A collocation technique in non-polynomial spline space is presented to approximate solutions of singular neutral functional differential equations (SNFDEs). Using solution representations and general well-posedness results for SNFDEs convergence of the method is shown for a large class of initial …
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The power of random information for numerical approximation and integration
… complexity, a field related to the numerical analysis of abstract problems. The quality or power of gathered information is measured by its radius which is the uniform error obtainable by the best possible algorithm using it. The main aim is to present progress towards understanding …
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The Numerical approximation of minimal surfaces with free boundaries by finite elements
… method for finding and calculating discrete approximations to following disc-type minimal surfaces with free boundaries: Solution of the Plateau Problem corresponding to a supporting surface S, Solution of the Thread Problem. In both case, the problem is reformulated and the highly nonlinear …
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Stochastic numerical approximation approaches for estimation of traffic volume under travel demand uncertainties
The traditional deterministic process of trip assignment does not account for uncertainties in traffic demands. These point-estimate based solutions often results in large differences between forecasted and actual traffic volumes thereby imposing huge financial burdens upon development agencies. In …
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Numerical approximation and parametric statistical inference of stochastic differential equations, with applications to finance
… This difficulty motivates the need for approximation methods that are capable of simulating approximate sample paths with desirable convergence properties such that approximation errors can be controlled; and flexible parameter estimation methods that are not materially hampered by a …
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A numerical method for systems of ordinary differential equations
… method revolves around our ability to generate a numerical approximation of the general solution of systems of linear differential equations. The idea of obtaining a numerical approximation to the general solution leads to changes in the traditional approaches for solving boundary value problems. …
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Self Adaptive Methods for Parabolic Partial Differential Equations
… by relatively calm stable regions. The numerical approximation to such a solution is based on a mesh or grid structure that is best when very fine in the active region and coarse in the calm region.
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Analysis and Approximations of Time Dependent Queueing Models
… processes and distributions. We develop numerical approximation methods for analysis of general time-dependent queueing nodes by introducing new approximations for the time-dependent first two moments of the number-in-system and departure-count processes.
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Variational formulations and numerical analysis of some problems in small strain elastoplasticity
… thesis we study the mathematical structure and numerical approximation of two boundary-value problems in small strain elastoplasticity. The first problem, which we call the incremental holonomic problem, is based on a consistent incremental holonomic constitutive law, which in turn derives from …
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A meshfree method for the Poisson equation with 3D wall-bounded flow application
The numerical approximation of the Poisson equation can often be found as a subproblem to many more complex computations. In the case of Lagrangian approaches of flow equations, the Poisson equation often needs to be solved on an irregular point distribution. Currently, mainly unstructured …
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The Ph(t)/Ph(t)/s/c Queueing Model and Approximation
… problems are time-dependent. We develop a numerical approximation algorithm for the mean, variance and higher-order moments of the number of entities in the system at time t for the Ph(t)/Ph(t)/s/c queueing model. This model can be thought as a reparameterization to the G(t)/GI(t)/s. Our …
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Conjugate generalized linear mixed models with applications
… without the need for computational intensive numerical approximation methods. The proposed framework has important implications in terms of distributed computing, privacy preservation in large-scale administrative databases and discrete choice models, which we illustrate using several real …
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Analysis and numerical approximations of exact controllability problems for systems governed by parabolic differential equations
… is the limit of appropriate optimal controls. A numerical scheme of computing exact controls for linear parabolic equations is constructed based on this result. To obtain numerical approximation of the exact control for the Burger's equation, we first construct another numerical scheme of …
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Macroscopic Coupling Conditions with Partial Blocking for Highway Ramps
… using the supply and demand functions. The numerical approximation is carried out using a modified Godunov scheme, adjusted to take into account the effects of an emptying queue. Exact and numerical comparisons of the model with existing models verify that the number of vehicles who wish to …
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