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具有Logistic出生率和饱和接触率SIR模型的全局分析
Global analysis of SIR epidemic model with the Logistic birth rate and the saturated contact rate
【摘要】 研究了一类具有Logistic出生率和饱和接触率的SIR模型,得到了疾病绝灭的阈值R0.通过比较原理和Dulac函数证明了:当R0≤1时无病平衡点全局渐近稳定;当R0>1时存在惟一地方病平衡点,且全局渐近稳定.
【Abstract】 The SIR epidemic model with the Logistic birth rate and the saturated contact rate is investigated.The basic reproduction number R0 is identified.By using comparison principle and Dulac function,it is showed that if R0≤1,the disease-free equilibrium is globally stable;if R0>1,a unique endemic equilibrium is globally stable.
【关键词】 比较原理;
Dulac函数;
全局稳定性;
传染病模型;
【Key words】 comparison principle; Dulac function; globally stable; epidemic model;
【Key words】 comparison principle; Dulac function; globally stable; epidemic model;
【基金】 陕西省教育厅科研项目(2010JK559);西安工程大学基础研究基金项目(09XG09)
- 【文献出处】 纺织高校基础科学学报 ,Basic Sciences Journal of Textile Universities , 编辑部邮箱 ,2011年02期
- 【分类号】O175
- 【被引频次】4
- 【下载频次】147