Results 31 to 40 of about 970 (177)

Turing–Hopf bifurcation and spatiotemporal patterns in a Gierer–Meinhardt system with gene expression delay

open access: yesNonlinear Analysis, 2021
In this paper, we consider the dynamics of delayed Gierer–Meinhardt system, which is used as a classic example to explain the mechanism of pattern formation. The conditions for the occurrence of Turing, Hopf and Turing–Hopf bifurcation are established by
Shuangrui Zhao   +2 more
doaj   +1 more source

Cell-Size Confinement Drives Size-Dependent Scaling of Intracellular Reaction-Diffusion Waves for Robust Patterning. [PDF]

open access: yesSmall Sci
Intracellular reaction‐diffusion (iRD) waves scale their wavelength to space size when they are confined within cell‐size spaces, despite having intrinsic wavelength in open systems. This wavelength selection ensures the scaling of the wave shape and the velocity, preserving these essential properties against physicochemical perturbations. This scaling
Takada S   +5 more
europepmc   +2 more sources

Convective Turing bifurcation

open access: yesMathematical Models and Methods in Applied Sciences
Following the approach pioneered by Eckhaus, Mielke, Schneider, and others for reaction–diffusion systems, we justify rigorously by Lyapunov–Schmidt reduction the formal amplitude (complex Ginzburg–Landau) equations describing Turing-type bifurcations of general reaction–diffusion–convection systems, showing that small spatially periodic traveling wave
Aric Wheeler, Kevin Zumbrun
openaire   +2 more sources

Self-Organized Patterns Induced by Neimark-Sacker, Flip and Turing Bifurcations in a Discrete Predator-Prey Model with Lesie-Gower Functional Response

open access: yesEntropy, 2017
The formation of self-organized patterns in predator-prey models has been a very hot topic recently. The dynamics of these models, bifurcations and pattern formations are so complex that studies are urgently needed.
Feifan Zhang   +5 more
doaj   +1 more source

Pattern Dynamics in a Predator-Prey Model with Diffusion Network

open access: yesComplexity, 2022
Diffusion plays an essential role in the distribution of predator and prey. We mainly research the diffusion network’s effect on the predator-prey model through bifurcation.
Wenjie Yang   +3 more
doaj   +1 more source

Hopf Bifurcation Analysis of a Diffusive Nutrient–Phytoplankton Model with Time Delay

open access: yesAxioms, 2022
In this paper, we studied a nutrient–phytoplankton model with time delay and diffusion term. We studied the Turing instability, local stability, and the existence of Hopf bifurcation.
Ruizhi Yang, Liye Wang, Dan Jin
doaj   +1 more source

Supercritical Hopf bifurcation and Turing patterns for an activator and inhibitor model with different sources

open access: yesAdvances in Difference Equations, 2018
We study the pattern generating mechanism of a generalized Gierer–Meinhardt model with diffusions. We show the existence and stability of the Hopf bifurcation for the corresponding kinetic system under certain conditions.
Jinliang Wang, You Li, Xiaojie Hou
doaj   +1 more source

Investigation of Turing structures formation under the influence of wave instability [PDF]

open access: yesКомпьютерные исследования и моделирование, 2019
A classical for nonlinear dynamics model, Brusselator, is considered, being augmented by addition of a third variable, which plays the role of a fast-diffusing inhibitor.
Maxim Borisovich Kuznetsov
doaj   +1 more source

Study on the Compatibility of Multi-Bifurcations by Simulations of Pattern Formation

open access: yesIEEE Access, 2019
Bifurcation is considered the main mathematical mechanism for the formation of spatial self-organizing patterns in many studies. When bifurcation was initially defined, only the transition of the system from stable state to unstable state or from uniform
Feifan Zhang   +4 more
doaj   +1 more source

Steady-state bifurcation of FHN-type oscillator on a square domain

open access: yesNonlinear Analysis, 2023
The Turing patterns of reaction-diffusion equations defined over a square region are more complex because of the D4-symmetry of the spatial region. This leads to the occurrence of multiple equivariant Turing bifurcations.
Chunrui Zhang   +2 more
doaj   +1 more source

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