Dynamics and patterns of an activator-inhibitor model with cubic polynomial source

Dynamics and patterns of an activator-inhibitor model with cubic polynomial source
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具有三次多项式源的激活剂-抑制剂模型的动力学和模式

DOI:
10.21136/am.2019.0142-18
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发表时间:
2019-02
影响因子:
0.7
通讯作者:
Jiang Juncheng
Jiang Juncheng
中科院分区:
数学4区
文献类型:
--
作者:
Li Yanqiu;Jiang Juncheng

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研究了一类具有一般三次多项式源的活化剂-抑制剂模型的动力学行为。在没有扩散的情况下,我们用特征值分析和数值方法研究了平衡点的存在性、稳定性和分支。对于反应扩散系统,提出了一个李雅普诺夫泛函来判定定常平衡态的全局稳定性,并得到了与激活源有关的导致Turing不稳定性的条件.此外,以活化剂的产生率为分岔参数,揭示了源项中各部分对斑图的决定作用以及条纹、斑点和迷宫之间的演化过程。最后,它是说明弱线性耦合的激活器-抑制器模型可以导致同步和反相模式。
The dynamics of an activator-inhibitor model with general cubic polynomial source is investigated. Without diffusion, we consider the existence, stability and bifurcations of equilibria by both eigenvalue analysis and numerical methods. For the reaction-diffusion system, a Lyapunov functional is proposed to declare the global stability of constant steady states, moreover, the condition related to the activator source leading to Turing instability is obtained in the paper. In addition, taking the production rate of the activator as the bifurcation parameter, we show the decisive effect of each part in the source term on the patterns and the evolutionary process among stripes, spots and mazes. Finally, it is illustrated that weakly linear coupling in the activator-inhibitor model can cause synchronous and anti-phase patterns.
DOI: 10.1007/s11071-015-2088-z
发表时间: 2015-04
期刊: Nonlinear Dynamics
影响因子: 5.6
作者:
Jun Zhou
通讯作者: Jun Zhou
DOI: 10.1142/s0218127415501084
发表时间: 2015-08
期刊: Int. J. Bifurc. Chaos
影响因子: --
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DOI: 10.1098/rstb.1952.0012
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期刊: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
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TURING, AM
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影响因子: 3
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