兰州理工大学学报 ›› 2025, Vol. 51 ›› Issue (6): 157-166.

• 数理科学 • 上一篇    下一篇

一类具有饱和发生率的时滞SIS模型动力学分析

袁海龙1, 樊雨1, 王玮明*2   

  1. 1.陕西科技大学 数学与数据科学学院, 陕西 西安 710021;
    2.淮阴师范学院 计算机科学与技术学院, 江苏 淮安 223300
  • 收稿日期:2023-11-13 发布日期:2025-12-31
  • 通讯作者: 王玮明(1968-),男,甘肃庆阳人,博士,教授.Email:wangwm_math@hytc.edu.cn
  • 基金资助:
    国家自然科学基金(12171192,12071173,12571531)

Dynamic analysis of a time-delayed SIS model with saturation incidence

YUAN Hai-long1, FAN Yu1, WANG Wei-ming2   

  1. 1. School of Mathematics &Data Science, Shaanxi University of Science &Technology, Xi’an 710021, China;
    2. School of Computer Science and Technology, Huaiyin Normal University, Huai’an 223300, China
  • Received:2023-11-13 Published:2025-12-31

摘要: 以时滞为分支参数,研究一类具有饱和发生率的时滞SIS模型.分析平衡点的稳定性,讨论模型Turing不稳定性和Hopf分支的存在性,通过相关分支理论确定Hopf分支的方向和稳定性,并给出数值模拟.

关键词: 时滞, SIS模型, Turing不稳定, Hopf分支, 稳定性

Abstract: Taking the time delay as the bifurcation parameter, a time-delayed SIS model with saturation incidence is studied. The stability of the equilibrium is analyzed, and the Turing instability of the model and the existence of the Hopf bifurcation are discussed. The direction and stability of the Hopf bifurcation are determined by the correlation bifurcation theory, and numerical simulations are also presented.

Key words: time delay, SIS model, Turing instability, Hopf bifurcation, stability

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