报告承办单位: 数学与统计学院

报告内容: Effect of time delays in an HIV virotherapy model with nonlinear incidence

报告人姓名: 袁沅

报告人所在单位: 加拿大纽芬兰纪念大学

报告人职称:教授

报告时间: 2019年10月17日（周四）上午10:30

报告地点: 云塘校区理科楼A-419

报告摘要：In this talk, we propose a mathematical model for HIV infection with delays in cell infection and virus production. The model examines a viral therapy for controlling infections through recombining HIV with a genetically modified virus. For this model, we derive two biologically insightful quantities (reproduction numbers) R0 and Rz, and their threshold properties are discussed. When R0 <1, the infection-free equilibrium E0 is globally asymptotically stable. If R0 >1 and Rz <1, the single-infection equilibrium Es is globally asymptotically stable. When Rz >1, there occurs the double-infection equilibrium Ed, and there exists a constant Rb such that Ed is asymptotically stable if 1<Rz<Rb. Some simulations are performed to support and complement the theoretical results.

报告人简介：袁沅，1984年于武汉大学获得学士学位，1988年于中南大学获得硕士学位，2002年于加拿大西安大略大学（University of Western Ontario）获得博士学位。2002年受NSERC（加拿大国家自然科学基金）资助曾在滑铁卢大学(University of Waterloo)做短暂博士后研究，随后于 2002 年9 月起受聘于加拿大纽芬兰纪念大学（Memorial University of Newfoundland）至今，现为该校数学与统计系终身正教授和博士生导师。

袁教授主要研究方向包括非线性动力系统的稳定性及分支分析、时滞微分方程及其在神经网络和生物数学等的应用、微分方程的符号及数值计算方法。现已在 SIAM Journal of Appled Mathematics, Journal of Mathematical Biology, Journal of Mathematical Analysis and Applications, Journal of Differential Equations, Nonlinear Analysis: Real World Applications, SIAM Journal on Applied Dynamical Systems 等主要应用数学及生物数学杂志发表论文近六十篇。研究成果深受同行好评及引用，研究一直受到加拿大NSERC的资助。