Results 11 to 20 of about 243,906 (306)

A numerical evaluation of solvers for the periodic Riccati differential equation [PDF]

open access: yes, 2009
Efficient and accurate structure exploiting numerical methods for solving the periodic Riccati differential equation (PRDE) are addressed. Such methods are essential, for example, to design periodic feedback controllers for periodic control systems ...
Andras Varga   +14 more
core   +1 more source

The Shortest Path Problem and Its Critical Edge in Uncertain Environment

open access: yesIEEE Access, 2019
In order to make strategic, tactical and operational decisions for the shortest path in an uncertain environment. Firstly, the information transmission time expectation-variance shortest path model in uncertain environment is proposed. Secondly, to avoid
Ke Wei Jie, Gao Chang Zhao, Xiao Jun Sun
doaj   +1 more source

Spectro-consistent discretization of Navier-Stokes: a challenge to RANS and LES [PDF]

open access: yes, 1998
In this paper, we discuss the results of a fourth-order, spectro-consistent discretization of the incompressible Navier-Stokes equations. In such an approach the discretization of a (skew-)symmetric operator is given by a (skew-)symmetric matrix ...
Veldman, A.E.P.   +5 more
core   +1 more source

Fermionic Gaussian states: an introduction to numerical approaches

open access: yesSciPost Physics Lecture Notes, 2022
This document is meant to be a practical introduction to the analytical and numerical manipulation of Fermionic Gaussian systems. Starting from the basics, we move to relevant modern results and techniques, presenting numerical examples and studying ...
Jacopo Surace, Luca Tagliacozzo
doaj   +1 more source

Shifted Jacobi collocation scheme for multidimensional time-fractional order telegraph equation [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2020
We propose a numerical scheme to solve a general class of time-fractional order telegraph equation in multidimensions using collocation points nodes and approximating the solution using double shifted Jacobi polynomials.
R.M. Hafez, Y.H. Youssri
doaj   +1 more source

A Complete Framework for Acousto-Electric Tomography With Numerical Examples

open access: yesIEEE Access, 2020
Acousto-electric tomography (AET) involves three steps to retrieve the distribution of conductivity in a domain of interest (DOI): measure the potential on the DOI boundary (usually with a limited number of electrodes set there), compute the power ...
Changyou Li   +3 more
doaj   +1 more source

A Reliable Combination of Double Laplace Transform and Homotopy Analysis Method for Solving a Singular Nonlocal Problem with Bessel Operator

open access: yesAxioms, 2023
In this article, we present a numerical iterative scheme for solving a non-local singular initial-boundary value problem by combining two well known efficient methods. Namely, the homotopy analysis method and the double Laplace transform method.
Said Mesloub   +2 more
doaj   +1 more source

Conservative numerical methods for model kinetic equations [PDF]

open access: yes, 2007
A new conservative discrete ordinate method for nonlinear model kinetic equations is proposed. The conservation property with respect to the collision integral is achieved by satisfying at the discrete level approximation conditions used in deriving the ...
Titarev, Vladimir A.
core   +1 more source

Fast Numerical Solution of Fredholm Integral Equations with Stationary Kernels [PDF]

open access: yes, 1982
A fast recursive matrix method for the numerical solution of Fredholm integral equations with stationary kernels is derived. IfN denotes the number of nodal points, the complexity of the algorithm isO(N 2), which should be compared toO(N 3) for ...
Ljung, Stefan,, Ljung, Lennart,
core   +1 more source

A second-order numerical approximation of a singularly perturbed nonlinear Fredholm integro-differential equation [PDF]

open access: yes, 2023
We consider a singularly perturbed problem for a nonlinear first-order Fredholm integrodifferential equation. Our aim is to build and analyze a numerical approach with uniform convergence in the epsilon-parameter.
Amiraliyev, Gabil M.   +7 more
core   +1 more source

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