应兰州大学数学与统计学院李万同教授和王宾国教授的邀请,美国奥本大学沈文仙教授将于2021年6月28日-6月30日与我校有关师生进行在线学术研讨,其中6月29日举行线上专题学术报告。
报告题目:Effects of Chemotaxis Sensitivity and Logistic Source on the Dynamics of Chemotaxis Models
时 间:6月29日上午10:10.
地 点:腾讯ID:694 8382 5110
报告摘要:Chemotaxis models are used to describe the movements of biological species or living organisms in response to certain chemicals in their environments. It is known that chemotaxis may induce finite-time blow-up in various minimal chemotaxis models. In a minimal chemotaxis model, there is no reaction term or source term in the governing equation for the living organisms. It has been attracting a lot of attention to study the dynamics of chemotaxis models with a nonlinear source. The current talk is concerned with the dynamics of chemotaxis models with logistic source. In particular, I will discuss the finite-time blow-up prevention by logistic source in parabolic-elliptic chemotaxis models on bounded domains and the effect of chemotaxis sensitivity on the spreading speeds of chemotaxis models with logistic source on the whole space.
欢迎广大师生光临!
沈文仙(Wenxian Shen)教授教授简介
沈文仙教授1987年于北京大学数学系获得硕士学位;1992年于美国乔治亚理工学院数学学院获得博士学位。自1992于美国奥本大学数学系任教,2002后成为全职教授。沈教授多年来致力于研究许多微分方程中的动力学问题,包括异质和随机介质理论中的行波解,单调动力系统中的Lyapunov指数理论,非局部扩散算子的谱理论及应用,和拟周期反应扩散方程的渐近动力学行为。沈教授在《Transactions of The American Mathematical Society》、《Journal of Differential Equations》、《Journal ofDynamics and Differential Equations》等国际著名期刊上发表学术论文80余篇,论文被引用超过1000多次,主持过多项国家自然科学基金。
甘肃应用数学中心
萃英学院
甘肃省高校应用数学与复杂系统省级重点实验室
数学与统计学院
2021年6月26日