吉林大学学报(理学版) ›› 2018, Vol. 56 ›› Issue (6): 1391-1396.

• 数学 • 上一篇    下一篇

Lyapunov函数在一类随机扰动的SIS-VS传染病系统中的应用#br#

夏兰1,2, 赵亚男3   

  1. 1. 吉林大学 计算机科学与技术学院, 长春 130012;2. 吉林交通职业技术学院 基础部, 长春 130012; 3. 长春大学 理学院, 长春 130022
  • 收稿日期:2018-03-20 出版日期:2018-11-26 发布日期:2018-11-26
  • 通讯作者: 夏兰 E-mail:zhaoyn111@163.com

Application of Lyapunov Function in a Class of SISVSEpidemic Systems with Random Perturbation

XIA Lan1,2, ZHAO Yanan3   

  1. 1. College of Computer Science and Technology, Jilin University, Changchun 130012, China;2. Department of Basic, Jilin Communications Polytechnic, Changchun 130012, China;3. School of Science, Changchun University, Changchun 130022, China
  • Received:2018-03-20 Online:2018-11-26 Published:2018-11-26

摘要: 考虑一类具有随机扰动的SISVS传染病系统, 应用新的Lyapunov函数研究该系统的遍历性, 得到了该随机传染病系统平稳分布存在
性和遍历性的充分条件. 结果表明, Lyapunov函数的构造方法改进了依赖于确定性模型的地方病平衡点和疾病致死率限制的已有结果, 得到了更适用的条件.

关键词: 随机微分方程, Lyapunov函数, SIS-VS传染病模型, 平稳分布, 遍历性

Abstract: We considered a class of SISVS epidemic system with random perturbation,  applied the new Lyapunov function to study the ergodicity of the system, and obtained the sufficient conditions for the existence and ergodicity of the stationary distribution of the stochastic epidemic system. The results show that the construction method of Lyapunov function improves the existing results of endemic equilibrium and the mortality, which depend on the deterministic models, and obtains more applicable conditions.

Key words: stochastic differential equation, Lyapunov function,  , SIS-VS epidemic model, station distribution, ergodicity

中图分类号: 

  • O211.63