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A new parameter-convergent nonstandard finite difference method for two-parameter singularly perturbed problems

open access: yesDiscover Applied Sciences
This article focuses on the numerical solution of a time-dependent parabolic problem that exhibits singular perturbations and involves two perturbation parameters. To address this problem, a fitted mesh finite difference method is developed. In numerical
Mekashaw Ali Mohye   +5 more
doaj   +1 more source

A monotone scheme for Hamilton-Jacobi equations via the nonstandard finite difference method [PDF]

open access: yes, 2009
A usual way of approximating Hamilton-Jacobi equations is to couple space finite element discretization with time finite difference discretization. This classical approach leads to a severe restriction on the time step size for the scheme to be monotone.
Jean M.-S. Lubuma   +5 more
core   +1 more source

Efficient Positivity-Preserving NSFD Scheme: Application to Advection-Diffusion-Reaction Equation [PDF]

open access: yesJournal of Applied and Computational Mechanics
Solving problems across a wide range of scientific and engineering domains, encompassing physical, mechanical and biological systems as well as financial markets, necessitates addressing parabolic equations of the advection-diffusion-reaction (ADR ...
Reza Shokri Jahandizi   +3 more
doaj   +1 more source

Exact Finite Difference Scheme and Nonstandard Finite Difference Scheme for Burgers and Burgers-Fisher Equations [PDF]

open access: yes, 2014
We present finite difference schemes for Burgers equation and Burgers-Fisher equation. A new version of exact finite difference scheme for Burgers equation and Burgers-Fisher equation is proposed using the solitary wave solution.
Xiaohua Ding, Lisha Wang, Lei Zhang
core   +1 more source

A Parameter Robust Method for Singularly Perturbed Delay Differential Equations

open access: yesJournal of Inequalities and Applications, 2010
Uniform finite difference methods are constructed via nonstandard finite difference methods for the numerical solution of singularly perturbed quasilinear initial value problem for delay differential equations. A numerical method is constructed for this
Erdogan Fevzi
doaj  

Stability and computational analysis of Influenza-A epidemic model through double time delay

open access: yesAlexandria Engineering Journal
Delay factors demonstration has a significant role in controlling a strain of infectious disease instead of a pharmaceutical strategy. According to the World Health Organization (WHO), 3–5 million cases are reported annually and approximately 290,000 to ...
Ateq Alsaadi   +3 more
doaj   +1 more source

Nonstandard finite difference method for ODEs for initial-value problems

open access: yesNew Trends in Mathematical Science, 2016
In this paper, a powerful recent non-standard finite different method by nonlocal approximation is improved. Also, compared standard finite difference method to this non-standard finite different method in terms of stability and accuracy. As a numerical example, Hybrid Selection & Genetics equation is considered as the candidate from class of first
openaire   +3 more sources

Nonlinear Elimination of Drugs in One-Compartment Pharmacokinetic Models: Nonstandard Finite Difference Approach for Various Routes of Administration

open access: yesMathematical and Computational Applications, 2018
The motivation for this study is to introduce and motivate the use of nonstandard finite difference (NSFD) schemes, capable of solving one-compartment pharmacokinetic models.
Oluwaseun Egbelowo
doaj   +1 more source

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