Results 21 to 30 of about 391,454 (282)

Minimal wave speed of a bacterial colony model

open access: yesApplied Mathematical Modelling, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang, Tianran, Wang, Wendi, Wang, Kaifa
openaire   +1 more source

A weakly nonlinear Alfvénic pulse in a transversely inhomogeneous medium [PDF]

open access: yes, 2001
The interaction of a weakly nonlinear Alfvénic pulse with an Alfvén speed inhomogeneity in the direction perpendicular to the magnetic field is investigated.
Abdelatif   +28 more
core   +4 more sources

Wave propagation in a diffusive SEIR epidemic model with nonlocal transmission and a general nonlinear incidence rate

open access: yesBoundary Value Problems, 2021
We introduce a diffusive SEIR model with nonlocal delayed transmission between the infected subpopulation and the susceptible subpopulation with a general nonlinear incidence.
Xin Wu, Zhaohai Ma
doaj   +1 more source

Pulse-front tilt for short-wavelength lasing by means of traveling-wave plasma-excitation [PDF]

open access: yes, 2012
Generation of coherent short-wavelength radiation across a plasma column is dramatically improved under traveling-wave excitation (TWE). The latter is optimized when its propagation is close to the speed of light, which implies small-angle target ...
Bleiner, Davide, Feurer, Thomas
core   +1 more source

Spreading Speed in A Nonmonotone Equation with Dispersal and Delay

open access: yesMathematics, 2019
This paper is concerned with the estimation of spreading speed of a nonmonotone equation, which involves time delay and nonlocal dispersal. Due to the time delay, this equation does not generate monotone semiflows when the positive initial value is given.
Xi-Lan Liu, Shuxia Pan
doaj   +1 more source

Travelling-wave analysis of a model describing tissue degradation by bacteria

open access: yes, 2007
We study travelling-wave solutions for a reaction-diffusion system arising as a model for host-tissue degradation by bacteria. This system consists of a parabolic equation coupled with an ordinary differential equation.
Hilhorst, Danielle   +2 more
core   +1 more source

Varying the direction of propagation in reaction-diffusion equations in periodic media [PDF]

open access: yes, 2015
We consider a multidimensional reaction-diffusion equation of either ignition or monostable type, involving periodic heterogeneity, and analyze the dependence of the propagation phenomena on the direction.
Alfaro, Matthieu, Giletti, Thomas
core   +2 more sources

Existence and Nonexistence of Traveling Wave Solutions for a Reaction–Diffusion Preys–Predator System with Switching Effect

open access: yesAdvances in Mathematical Physics, 2023
In this paper, we are concerned with traveling wave solutions for two preys–one predator system with switching effect. First, we discuss that there is no traveling wave solution for this system by using linearization method.
Hang Zhang, Yujuan Jiao, Jinmiao Yang
doaj   +1 more source

Analyzing critical propagation in a reaction-diffusion-advection model using unstable slow waves

open access: yes, 2014
The effect of advection on the critical minimal speed of traveling waves is studied. Previous theoretical studies estimated the effect on the velocity of stable fast waves and predicted the existence of a critical advection strength below which ...
Dahlem, Markus A.   +2 more
core   +1 more source

Propagation dynamics in an SIRS model with general incidence functions

open access: yesMathematical Biosciences and Engineering, 2023
This paper studies the initial value problems and traveling wave solutions in an SIRS model with general incidence functions. Linearizing the infected equation at the disease free steady state, we can define a threshold if the corresponding basic ...
Wenhao Chen , Guo Lin, Shuxia Pan
doaj   +1 more source

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