Results 71 to 80 of about 168,933 (177)

Oscillatory Turing Patterns in a Simple Reaction-Diffusion System [PDF]

open access: yes, 2007
Turing suggested that, under certain conditions, chemicals can react and diffuse in such a way as to produce steady-state inhomogeneous spatial patterns of chemical concentrations.
Liaw, S. S., Liu, R. T., Maini, P. K.
core  

Stationary localized structures and the effect of the delayed feedback in the Brusselator model

open access: yes, 2018
The Brusselator reaction-diffusion model is a paradigm for the understanding of dissipative structures in systems out of equilibrium. In the first part of this paper, we investigate the formation of stationary localized structures in the Brusselator ...
Averlant, Etienne   +8 more
core   +1 more source

Spatial Complexity of a Predator-Prey Model with Holling-Type Response

open access: yesAbstract and Applied Analysis, 2014
We focus on a spatially extended Holling-type IV predator-prey model that contains some important factors, such as noise (random fluctuations), external periodic forcing, and diffusion processes.
Lei Zhang, Zhibin Li
doaj   +1 more source

Temporal and spatial patterns in a diffusive ratio-dependent predator–prey system with linear stocking rate of prey species

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
The ratio-dependent predator–prey model exhibits rich interesting dynamics due to the singularity of the origin. It is one of prototypical pattern formation models.
Wanjun Li, Xiaoyan Gao, Shengmao Fu
doaj   +1 more source

Turing instability and pattern formation of a fractional Hopfield reaction–diffusion neural network with transmission delay

open access: yesNonlinear Analysis, 2022
It is well known that integer-order neural networks with diffusion have rich spatial and temporal dynamical behaviors, including Turing pattern and Hopf bifurcation.
Jiazhe Lin, Jiapeng Li, Rui Xu
doaj   +1 more source

Competition of spatial and temporal instabilities under time delay near codimension-two Turing-Hopf bifurcations

open access: yes, 2011
Competition of spatial and temporal instabilities under time delay near the codimension-two Turing-Hopf bifurcations is studied in a reaction-diffusion equation.
Hui-Juan Wang   +4 more
core   +1 more source

The spatial dynamics of a zebrafish model with cross-diffusions

open access: yesMathematical Biosciences and Engineering, 2017
This paper investigates the spatial dynamics of a zebrafish model with cross-diffusions. Sufficient conditions for Hopf bifurcation and Turing bifurcation are obtained by analyzing the associated characteristic equation.
Hongyong Zhao, Qianjin Zhang, Linhe Zhu
doaj   +1 more source

Nonlocal control of pulse propagation in excitable media

open access: yes, 2014
We study the effects of nonlocal control of pulse propagation in excitable media. As a generic example for an excitable medium the FitzHugh-Nagumo model with diffusion in the activator variable is considered. Nonlocal coupling in form of an integral term
Bachmair, Clemens A., Schöll, Eckehard
core   +1 more source

Studies on the Existence of Unstable Oscillatory Patterns Bifurcating from Hopf Bifurcations in a Turing Model

open access: yesJournal of Applied Mathematics, 2014
We revisit a homogeneous reaction-diffusion Turing model subject to the Neumann boundary conditions in the one-dimensional spatial domain. With the help of the Hopf bifurcation theory applicable to the reaction-diffusion equations, we are capable of ...
Yan Zhang, Zhenhua Bao
doaj   +1 more source

Turing-Hopf Bifurcation and Spatio-Temporal Patterns of a Ratio-Dependent Holling-Tanner Model with Diffusion [PDF]

open access: yesInternational Journal of Bifurcation and Chaos in Applied Sciences and Engineering, 2017
In this paper, the dynamics of a diffusive ratio-dependent Holling–Tanner model subject to Neumann boundary conditions is considered. We derive the conditions for the existence of Hopf, Turing, Turing–Hopf, Turing–Turing, Hopf-double-Turing and triple ...
Qi An, Weihua Jiang
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy