Results 81 to 90 of about 155 (123)

Generalized result on the global existence of positive solutions for a parabolic reaction-diffusion model with an m × m diffusion matrix

open access: yesDemonstratio Mathematica
The aim of this work is to study the global existence in time of solutions for the tridiagonal system of reaction-diffusion by order mm. Our techniques of proof are based on compact semigroup methods and some L1{L}^{1}-estimates.
Barrouk Nabila, Abdelmalek Karima
doaj   +1 more source

Spreading Speeds and Traveling Waves for Periodic Evolution Systems

open access: yes, 2005
2000 Math Subject Classification: 37C65, 37B55, 35K57, 35R10, 92D25The theory of spreading speeds and traveling waves for monotone autonomous semiflows is extended to periodic semiflows in the monostable case. Then these abstract results are applied to a
Liang, Xing   +2 more
core  

Analysis of iterative methods for solving a Ginzburg-Landau equation

open access: yes, 2005
. Very recently we have proposed to use a complex Ginzburg-Landau equation for high contrast inpainting, to restore higher dimensional (volumetric) data (which has applications in frame interpolation), improving sparsely sampled data and to fill in ...
Alfio Borzi   +2 more
core  

Adaptive Computing by Memristor Circuits [PDF]

open access: yes, 2018
Neuromorphic circuits will be considered for energy efficient computing based on biological principles in future electronic systems. Thereby, memristors are assumed in neuron models and for synapses in several recent investigations in order to overcome ...
Ascoli, Alon   +4 more
core  

Analysis of a diffusive two-strain malaria model with the carrying capacity of the environment for mosquitoes

open access: yesInfectious Disease Modelling
We propose a malaria model involving the sensitive and resistant strains, which is described by reaction-diffusion equations. The model reflects the scenario that the vector and host populations disperse with distinct diffusion rates, susceptible ...
Jinliang Wang, Wenjing Wu, Yuming Chen
doaj   +1 more source

Second-Order Phase Field Asymptotics For Unequal Conductivities

open access: yes, 2007
. We extend Karma and Rappel's improved asymptotic analysis of the phase field model to different diffusivities in solid and liquid. We consider both second-order "classical" asymptotics, in which the interface thickness is taken much ...
Robert F. Almgren
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Sharp forced waves of degenerate diffusion equations in shifting environments

open access: yesAdvances in Nonlinear Analysis
This article is concerned with the sharp forced waves for degenerate diffusion equations in a shifting environment. The degeneracy of diffusion usually causes the forced waves to become sharp.
Mei Ming   +4 more
doaj   +1 more source

Global boundedness and stability of a quasilinear two-species chemotaxis-competition model with nonlinear sensitivities

open access: yesAdvances in Nonlinear Analysis
This study deals with the global boundedness of a classical solution to a quasilinear two-species chemotaxis-competition model with nonlinear sensitivities in n≤3n\le 3. Due to the presence of nonlinear sensitivities, obtaining the necessary ‖w‖L∞\Vert w{
Yan Dongze, Liu Changchun
doaj   +1 more source

Novel analytical expression of concentrations of redox components in the new autocatalytic mechanism: The hyperbolic function method

open access: yesPartial Differential Equations in Applied Mathematics
A theoretical study of the new autocatalytic mechanisms (EC″) for irreversible homogeneous reaction on diffusion layer for steady-state conditions is provided.
G. Yokeswari   +3 more
doaj   +1 more source

A Gradient Random Walk Method For Two-Dimensional Reaction-Diffusion Equations

open access: yes, 1992
. We present an extension to two space dimensions of the gradient random walk algorithm for reaction-diffusion equations. This family of algorithms is related closely to the random vortex method of computational fluid dynamics. Although the computational
Arthur Sherman, Michael Mascagni
core  

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