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arXiv 1802.02309math.PR
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状态依赖随机环境中SIRS模型的渐近行为

Asymptotic Behavior of SIRS Models in State-dependent Random Environments

Jianhai Bao, Jinghai Shao

摘要:

感染个体的灭绝和持续与环境的随机变化密切相关。本文通过随机/随机SIRS模型,定性和定量地分析了环境随机变化所造成的影响。我们的贡献在于:(1)给出了传染性个体灭绝(持续)的充分条件,即使它们是持续的(分别为:灭绝);(ii)揭示了发病函数的随机切换对传染病个体灭绝的影响,这是以前没有研究过的;(iii)通过跳过程泛函的随机比较,建立了一系列具有状态依赖切换的随机/随机SIRS模型的传染病个体灭绝判定准则。最后,给出了一些例子来说明我们的理论的应用.

英文摘要:

The extinction and persistence of infective individuals are closely related to the random change of the environment. In this paper, via the random/stochastic SIRS models, we analyze qualitatively and quantitatively the impact caused by the random change of the environment. Our contributions consist in (i) giving some sufficient conditions on extinction (persistence) of the infectious individuals even though they are persistent (resp. extinct) in certain fixed environments; (ii) revealing the influence of random switching of incidence functions on extinction for the infectious individuals, which has not been studied before; (iii) establishing a criterion to judge extinction of the infectious individuals for a range of random/stochastic SIRS models with state-dependent switching via a stochastic comparison for functionals of jump processes. Moreover, some examples are set to illustrate the applications of our theory.

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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