讲座题目1:Dynamics of a Simple Two-Patch Model for Interacting Wild and Sterile Mosquitoes
讲座人:李佳教授
讲座时间:10:30
讲座内容简介:
Sterile insect technique is one of the effective biological measures in mosquitoes control. Since mosquitoes fly around as we release sterile mosquitoes, the mosquito dispersal affects the effectiveness of the releases. To study the impact of mosquito dispersal, we formulate a simple two-patch model where sterile mosquitoes are only released in one of the two patches. We establish the threshold of releases such that the wild mosquitoes are either wiped out or coexist with sterile mosquitoes. We then investigate the existence and stability of coexistent positive equilibria. Numerical examples are also provided.
讲座人简介:
李佳,1987年于美国田纳西大学获博士学位,2000年任美国阿拉巴马大学汉斯维尔校区数学系教授。主要研究领域:动力系统,微分方程,差分方程,种群动力学,传染病动力学,数员工态学,环境数学建模与分析等,在SCI源期刊发表论文80余篇, 获得多项美国国家科学基金项目,组织和参与多次有关生物数学方面的国际学术会议,具有较高的国际影响力。任Mathematical Biology and Engineering、Journal of Biological Dynamics、Annuals of Differential Equations、Journal of Mathematics and Computer Science等SCI源期刊副主编,是国际生物数学领域有重要影响的专家。
讲座题目2:Dynamics of an HBV/HCV infection model with intracellular delay and cell proliferation
讲座人:李建全教授
讲座时间:11:10
讲座内容简介:
A new mathematical model of hepatitis B/C virus (HBV/HCV) infection which incorporates the proliferation of healthy hepatocyte cells and the latent period of infected hepatocyte cells is proposed and studied. The dynamics is analyzed via Pontryagin’s method and a newly proposed alternative geometric stability switch criterion. Sharp conditions ensuring stability of the infection persistent equilibrium are derived by applying Pontryagin’s method. Using the intracellular delay as the bifurcation parameter and applying an alternative geometric stability switch criterion, we show that the HBV/HCV infection model undergoes stability switches. Furthermore, numerical simulations illustrate that the intra- cellular delay can induce complex dynamics such as persistence bubbles and chaos.
讲座人简介:
李建全,陕西科技大学文理学院,教授。1986年毕业于太原工业大学数力系应用数学专业,获理学学士学位;1989年毕业于西安交通大学数学系应用数学专业,获理学硕士学位;2004年毕业于西安交通大学理学院应用数学专业,获理学博士学位;2007年12月于西安交通大学控制科学与工程博士后流动站出站;2009年4月应邀访问意大利那不勒斯大学;1989年-2017年任职于空军工程大学。现主要从事种群生态动力学、传染病动力学、病毒动力学的数学建模与研究,发表相关学术论文100 余篇,其中被SCI 收录40余篇。所参与的研究项目分别于2002 年和2006 年获教育部高等学校科学技术奖自然科学二等奖。曾主持国家博士后科学基金一项,主持国家自然科学基金项目两项,参两项与国家十二五重大专项研究项目。博士学位论文获西安交通大学和陕西省优秀博士学位论文。2009 年与他人合作在World Scientific 出版了英文版专著《Dynamical Modeling and Analysis of Epidemics》。