An SIS epidemic model with standard incidence rate is investigated.
研究一类具有标准发生率的SIS传染病模型。
In Chapter 1, an SIS epidemic model with staged treatment function is proposed where the disease-related death rate is negligible.
第一章主要研究了含有分段形式治疗函数且忽略疾病致死率的SIS传染病模型。
An epidemic SIS model whose coefficient is almost periodic functions is studied. A sufficient condition of existence and uniqueness of positive periodic solution is obtained.
对系数是概周期函数的传染病s IS模型进行了研究，得到了概周期解存在惟一的一个充分条件。
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