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arXiv 1806.08696math.DS
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一类随机时滞SIRS传染病模型的不变测度及其渐近性

On invariant measures and the asymptotic behavior of a stochastic delayed SIRS epidemic model

Xiaoming Fu

摘要:

本文考虑一类具有时滞和一般传染率的随机传染病模型。我们首先证明了整体正解的存在唯一性。利用Krylov-Bogoliubov方法,得到了不变测度的存在性.此外,我们研究了一个特殊的情况下,发病率是双线性的分布时间延迟。当基本再生数R 0 < 1时,分析了无病平衡点E0附近的渐近行为;当R 0> 1时,证明了不变测度是唯一的、遍历的.数值模拟也验证了我们的分析结果。

英文摘要:

In this paper, we consider a stochastic epidemic model with time delay and general incidence rate. We first prove the existence and uniqueness of the global positive solution. By using the Krylov-Bogoliubov method, we obtain the existence of invariant measures. Furthermore , we study a special case where the incidence rate is bilinear with distributed time delay. When the basic reproduction number R0 < 1, the analysis of the asymptotic behavior around the disease-free equilibrium E0 is provided while when R0 > 1, we prove that the invariant measure is unique and ergodic. The numerical simulations also validate our analytical results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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