Break-even concentration and periodic behavior of a stochastic chemostat model with seasonal fluctuation
Break-even concentration and periodic behavior of a stochastic chemostat model with seasonal fluctuation
复制标题
具有季节性波动的随机恒化器模型的盈亏平衡浓度和周期性行为
DOI:
10.1016/j.cnsns.2016.10.014
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发表时间:
2017-05
影响因子:
3.9
通讯作者:
Yuan, Sanling
中科院分区:
文献类型:
--
作者:
Zhao, Dianli;Yuan, Sanling
This paper formulates a single-species stochastic chemostat model with periodic coefficients due to seasonal fluctuation. When the noise is small, a modified break-even concentration is identified, whose value below or above the averaged concentration of the input nutrient can completely determine whether the microorganism will persist or not, where an accuracy decay rate is given for extinction. In case of persistence, existence of the random positive periodic solution is proved for the considered model. Further, the random periodic solution is shown to be globally attractive under some mild extra condition. The periodic dynamics obtained in this paper are supported by computer simulations.
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影响因子:
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