摘要
研究一类具有垂直传染和因病死亡的传染病模型,得到了地方病平衡点存在的阈值,当时,仅存在无病平衡点且局部渐进稳定;当时,除存在不稳定的无病平衡点外,还存在唯一的正地方病平衡点且全局渐进稳定。
A model with vertical transmission and death of disease is studied and the threshold value for local disease equilibrium point is obtained. At that time, there only existed disease-free equilibrium point and local progressive stability. At that time ,there existed only one plus local disease equilibrium point and global progressive stability apart from unstable desease--free equilibrium point.
出处
《渤海大学学报(自然科学版)》
CAS
2009年第2期151-153,共3页
Journal of Bohai University:Natural Science Edition
基金
辽宁省教育厅科学技术研究基金资助项目(No:200818)。
关键词
传染病模型
垂直传染
平衡点
稳定性
model for epidemic disease
vertical transmission
equilibrum point
stability
作者简介
汪莉俊(1985-),女.渤海大学硕士研究生,从事生物数学研究