Results 21 to 30 of about 162,395 (214)

Weighted Average Finite Difference Methods for Fractional Reaction-Subdiffusion Equation

open access: yesWalailak Journal of Science and Technology, 2013
In this article, a numerical study for fractional reaction-subdiffusion equations is introduced using a class of finite difference methods. These methods are extensions of the weighted average methods for ordinary (non-fractional) reaction-subdiffusion ...
Nasser Hassen SWEILAM   +2 more
doaj   +1 more source

Numerical Treatment of Allen’s Equation Using Semi Implicit Finite Difference Methods

open access: yesEurasian Journal of Science and Engineering, 2022
This paper aims to propose the semi implicit finite difference method for discretizing Cahn-Allen equation. The stability and convergence analysis are proved.
Younis A. Sabawi   +2 more
doaj   +1 more source

Stabilized finite difference methods for the fully dynamic biot's problem

open access: yesMathematical Modelling and Analysis, 2013
This paper deals with the stabilization of the poroelasticity system, in the incompressible fully dynamic case. The stabilization term is a perturbation of the equilibrium equation that allows us to use central difference schemes to approximate the first
Natalia Boal   +3 more
doaj   +1 more source

Application of finite-difference methods to parameter identification of agroecological models

open access: yesLietuvos Matematikos Rinkinys, 2001
A typical parameter identification problem arisen in agroecological modeling is described and a finite difference method to solve an appropriate inverse problem is proposed.
Natalija Juščenko, Vitalijus Denisov
doaj   +3 more sources

Frequency‐dependent finite‐difference time‐domain method based on iterated Crank–Nicolson scheme

open access: yesElectronics Letters, 2023
The finite‐difference time‐domain (FDTD) method based on the iterated Crank–Nicolson (ICN) scheme is extended to a frequency‐dependent version. The Drude model is used to express a metal dispersion, which is incorporated into the iterated Crank–Nicolson ...
Jun Shibayama   +3 more
doaj   +1 more source

Comparison of the stability of discontinuous Galerkin and finite-difference methods

open access: yesLietuvos Matematikos Rinkinys, 2002
In this article we present stability analysis of two discrete schemes, which are used to solve a parabolic problem on adaptive nonstationary meshes. The influence of interpolation and projection errors is investigated.
Raimondas Čiegis   +2 more
doaj   +3 more sources

Computational methods for difference families in finite abelian groups

open access: yesSpecial Matrices, 2019
Our main objective is to show that the computational methods, developed previously to search for difference families in cyclic groups, can be fully extended to the more general case of arbitrary finite abelian groups.
Ðoković Dragomir Ž.   +1 more
doaj   +1 more source

Forward Electrocardiogram Modeling by Small Dipoles Based on Whole-Body Electric Field Analysis

open access: yesIEEE Access, 2019
Mathematical modeling of detailed cardiac function has become possible in recent years. Computer simulations have been conducted to reproduce electrical phenomena of the heart.
Tatsuhito Nakane   +4 more
doaj   +1 more source

The impact of different corona models on FD algorithms for the solution of multiconductor transmission lines equations

open access: yesHigh Voltage, 2021
In this study, the implementation of different corona discharge models in a transient program for overhead multiconductor lines based on the implicit Crank‐Nicolson Finite Difference Time Domain method is presented.
Erika Stracqualursi   +2 more
doaj   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang   +8 more
wiley   +1 more source

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