The International Workshop on Nonlinear Elliptic and Parabolic Partial Differential Equations is scheduled to be held on 24-25 July, 2010, at Tongji University, Shanghai, China. The workshop aims to discuss research results and trends in elliptic and parabolic partial differential equations and related topics. All teachers and students are welcome.Scientific Committee:Zihua Chen, Tongji Univers...

Predator-prey interaction is a basic interspecies relation for ecological and social models. We review some recent results on global bifurcation of limit cycles, steady states in general predator-prey models, some with spatial structure. These results help to explain the rich spatial- temporal patterns which the system possesses.

This presentation includes two parts. The first part considers the problem of stability of linear time-delay systems. Firstly, a delay decomposition approach is proposed to deal with the problem. The idea of the approach is that the delay interval is uniformly divided into N segments with N a positive integer, and a proper Lyapunov-Krasovskii functional is chosen with different weighted matrices corresponding to different segments in the Lyapunov-Krasovskii functional. Secondly, based on the delay decomposition approach, some new delay-dependent stability criteria for linear time-delay systems are derived. These criteria are much less conservative and include some existing results as their special cases.

题目： An Effective Shafarevich Theorem for Elliptic Curves报告人：同济大学顾问教授、瑞士苏黎世高工(ETH)数学系资深教授Gisbert Wüestholz博士时 间：2010年7月1日星期四下午15:30-16:30地 点：同济大学数学系致远楼学术报告厅107室热烈欢迎有兴趣的老师和同学参加

LOGISTIC方程是自然科学中许多自然现象的基本数学模型。我们将回顾LOGISTIC方程的历史演变，推广和抽象过程，以及它在生态学，化学，基因学中的广泛应用。我们也介绍扩散过程，时滞，空间非均匀性对 LOGISTIC 模型的影响。

题目：A New Collocation Method For Ordinary DifferentialEquations of First Order报告人：郭本瑜 教授上海师范大学数学系时间：2010年6月23日（星期三）下午3：00地点：数学系107欢迎有关教师、研究生及有兴趣者参加

报告人：麻希南教授（中国科技大学）报告题目：Curvature estimates for the convex level sets of harmonic function时间：2010年6月22日，星期二上午10：30—11：30地点：数学系致远楼107欢迎各位参加

报告将首先阐述应急管理的四个基本阶段，然后介绍应急响应流程的特点及其建模与分析，最后重点探讨给予agent的应急响应流程的设计与实现。