摘要
本文建立和研究了具有年龄结构,病死率不为零(即总人口变化)的传染病SIR模型持续性,证明了该模型当小于1时疾病消亡,当大于1时模型具有一致弱持续性质.
The persistence of age structure and non zero mortality ( viz. varying total population) SIR epidemic model is estab- lished and studied. The character is proved that the disease is extinct if Ro 〈 1 and the uniform week persistence if Ro 〉 1.
出处
《山西师范大学学报(自然科学版)》
2011年第3期6-10,共5页
Journal of Shanxi Normal University(Natural Science Edition)
关键词
年龄结构
传染病模型
总人口变化
致弱持续性
age-structured
epidemic model
varying total populatian
uniform week persistence