摘要
建立了具阶段结构的时滞传染病模型,得到了疾病流行与否的阈值R0.讨论了R0<1时,无病平衡点的局部稳定性和Hopf分支的存在性及R0>1时,地方病平衡点的局部稳定性和Hopf分支的存在性.
An epidemic model with time -delay and stage -structured characteristics is established, and the threshold value R0 for determining the epidemic of the disease is obtained. When R0 〈 1, the system's local asymp- totic stability and the existence of Hopf branch at its free equilibrium are analyzed, when R0 〉 1, the system's local asymptotic stability and the existence of Hopf branch at the positive equilibrium are also analyzed .
出处
《云南民族大学学报(自然科学版)》
CAS
2015年第3期211-216,共6页
Journal of Yunnan Minzu University:Natural Sciences Edition
基金
国家自然科学基金(11061017)
关键词
时滞
阶段结构
传染病模型
局部稳定性
HOPF分支
time - delay
stage structure
epidemic model
local asymptotic stability
Hopf branch
作者简介
王丽敏(1988-),女,硕士研究生.主要研究方向:生物数学.