Global Dynamics and Asymptotic Spreading Speeds for a Partially Degenerate Epidemic Model with Time Delay and Free Boundaries
Global Dynamics and Asymptotic Spreading Speeds for a Partially Degenerate Epidemic Model with Time Delay and Free Boundaries
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具有时滞和自由边界的部分退化流行病模型的全球动力学和渐近传播速度
DOI:
10.1007/s10884-020-09934-4
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发表时间:
2021-01
影响因子:
1.3
通讯作者:
Feng Wang
中科院分区:
文献类型:
--
作者:
Qiaoling Chen;Fengquan Li;Zhidong Teng;Feng Wang
This paper concerns the global dynamics and asymptotic spreading speeds for a partially degenerate epidemic model with time delay and free boundaries. Given a suitable compatible condition for initial values, we establish the global well-posedness of solutions and provide some sufficient conditions for spreading and vanishing. When spreading occurs, we prove that the asymptotic spreading speed is uniquely determined by a semi-wave problem with time delay. To investigate the existence of monotone increasing solutions to the semi-wave problem, we give a distribution of solutions to a third degree exponential polynomial equation. The results show that time delay slows down the asymptotic spreading speed of the disease.
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影响因子:
2.4
作者:
王明新
通讯作者:
王明新
影响因子:
1.2
作者:
Chen Qiaoling;Li Fengquan;Wang Feng
通讯作者:
Wang Feng
影响因子:
1.7
作者:
Cao Jia-Feng;Du Yihong;Li Fang;Li Wan-Tong
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Li Wan-Tong
DOI:
10.1007/s00526-019-1599-8
发表时间:
2019
影响因子:
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通讯作者:
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影响因子:
1.2
作者:
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通讯作者:
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