STUDY ON AN SIS EPIDEMIC MODEL WITH TIME VARIANT DELAY  

作　　者：YUAN Sanling MA Zhien (Department of Applied Mathematics, Xi ’an Jiaotong University, Xi ’an 710049, China] 

出　　处：《Journal of Systems Science & Complexity》2002年第3期299-306,共8页系统科学与复杂性学报（英文版）

基　　金：This research is supported by the National Natural Science Foundation of China(19971066) ; the Youth Science Foundation of Shannxi Province(20021003).

摘　　要：In this paper,we study an SIS epidemic model with a time variant delay.By means of Liapunov functional,some sufficient conditions of global stability to endemic equilibrium and disease free equilibrium have been obtained.The influence of time delay on the stability of equilibria is displayed.

关 键 词：Epidemic model time delay Lipunov functional global stability. 

分 类 号：O175[理学—数学]