Results 21 to 30 of about 85 (58)

New Caputo-Fabrizio fractional order SEIASqEqHR model for COVID-19 epidemic transmission with genetic algorithm based control strategy

open access: yesAlexandria Engineering Journal, 2020
Fractional derivative has a memory and non-localization features that make it very useful in modelling epidemics’ transition. The kernel of Caputo-Fabrizio fractional derivative has many features such as non-singularity, non-locality and an exponential ...
M. Higazy, Maryam Ahmed Alyami
doaj  

On Efficient Second Order Stabilized Semi-Implicit Schemes for the Cahn-Hilliard Phase-Field Equation

open access: yes, 2018
Efficient and energy stable high order time marching schemes are very important but not easy to construct for the study of nonlinear phase dynamics. In this paper, we propose and study two linearly stabilized second order semi-implicit schemes for the ...
Wang, Lin, Yu, Haijun
core   +1 more source

Numerical analysis of parabolic p-Laplacian: Approximation of trajectories [PDF]

open access: yes, 2000
The long time numerical approximation of the parabolic p-Laplacian problem with a time-independent forcing term and sufficiently smooth initial data is studied.
Ju, Ning
core  

Relocation dynamics and multistable switching in semiconductor superlattices [PDF]

open access: yes, 2007
A numerical study of electric field domain relocation during slow voltage switching is presented for a spatially discrete model of doped semiconductor superlattices. The model is derived from the Poisson's equation and the charge continuity equation.
Bonilla, Luis L.   +2 more
core   +1 more source

Freezing similarity solutions in multi-dimensional Burgers’ Equation [PDF]

open access: yes, 2016
The topic of this paper are similarity solutions occurring in multi-dimensional Burgers’ equation. We present a simple derivation of the symmetries appearing in a family of generalizations of Burgers’ equation in d-space dimensions.
Rottmann-Matthes, Jens
core   +4 more sources

Computation of the stochastic basin of attraction by rigorous construction of a Lyapunov function [PDF]

open access: yes, 2019
The y-basin of attraction of the zero solution of a nonlinear stochastic differential equation can be determined through a pair of a local and a non-local Lyapunov function.
Bjoernsson, Hjortur   +4 more
core   +1 more source

Endogenous control in a ternary lotka-volterra model and its applications [PDF]

open access: yes, 2015
This paper aims at highlighting the role of endogenous controls in Lotka-Volterra predator-prey models. Unlike other studies in which the core lies in expanding the number of con\ub0icting species, here the stress is laid upon a control variable that ...
Chang, Ting Fa Margherita   +3 more
core  

Zur Numerik nichtlinearer dynamischer Systeme: Teil 1: Gleichgewichtslösungen [PDF]

open access: yes, 2010
Der Beitrag stellt die wesentlichen Algorithmen vor, die der Berechnung und Analyse von Gleichgewichtslösungen nichtlinearer dynamischer Systeme – beschrieben durch gewöhnliche Differenzialgleichungen – dienen.
Vogt, Werner
core  

Direct and indirect approximations to positive solution for a nonlinear reaction-diffusion problem. II. Indirect approximation [PDF]

open access: yes, 2002
In this paper we continue the study initiated in our previous work [3] and design a projection-like algorithm to approximate a hyperbolic unstable "point''. This "point'' is in fact the positive solution of the reaction-diffusion problem considered in [3]
Călin Ioan Gheorghiu, Damian Trif
core   +1 more source

Численные методы решения эволюционных уравнений с запаздыванием [PDF]

open access: yes, 2012
Конструируются сеточные методы для гиперболических уравнений с эффектом наследственности.
Пименов, В. Г.
core  

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