会议名称：
12th Joint Conference of the World-Organization-of-Systems-and-Cybernetics/International-Institute-of -General-Systems-Studies
会议时间：
MAR, 2002
会议地点：
Pittsburgh, PA
会议主办单位：
Foshan Univ, Dept Math, Guangdong, Peoples R China.^Cent China Normal Univ, Dept Math, Wuhan, Peoples R China.
关键词：
Cybernetics;Transportation;Uncertainty management;Natural disasters;Method study
摘要：
In ordinary transportation problems, it is always supposed that the mileage from every source to every destination is a definite number. But in special conditions, such as transporting emergency materials when natural calamity occurs or transporting military supplies during wartime, carrying network may be destroyed, mileage from some sources to some destinations are no longer definite. It is uncertain, a grey number. In these conditions, transportation capacity is often poor; the problems of optimization become even more important. Obviously, traditional methods are not suitable to solve these problems. In this paper, some methods of optimization for the special transportation problems are given.
摘要：
This paper is concerned with a maximum principle of optimal control problems governed by some parabolic differential equations which could be non-well-posed. Both an integral-type state constraint and a two-point boundary (time variable) state constraint are considered.
期刊：
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON DIFFERENTIAL EQUATIONS AND COMPUTATIONAL SIMULATIONS,2000年:176-180
通讯作者：
Liang, ZJ
作者机构：
[Yang, CH; Liang, ZJ] Cent China Normal Univ, Dept Math, Wuhan 430079, Peoples R China.
通讯机构：
[Liang, ZJ] C;Cent China Normal Univ, Dept Math, Wuhan 430079, Peoples R China.
摘要：
In this paper,we consider the Kolmogorov system which are the interaction of three species with the different intrinsic growth rates. We obtain the sufficient conditions to the existence of the non-constant periodic orbits of a Kolmogorov system in R-3.
作者机构：
[Jia, XH] City Univ Hong Kong, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China.;Cent China Normal Univ, Dept Math, Hubei 430079, Peoples R China.;Univ Qiqihaer, Dept Math, Heilongjiang, Peoples R China.;Chinese Acad Sci, Inst Appl Math, Beijing 100080, Peoples R China.;Univ Minnesota, Dept Comp Sci, Minneapolis, MN 55455 USA.
通讯机构：
[Jia, XH] C;City Univ Hong Kong, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China.
会议名称：
Workshop on Computational Graph Theory
会议时间：
JUL 22-24, 1999
会议地点：
CITY UNIV, HONG KONG, PEOPLES R CHINA
会议主办单位：
City Univ Hong Kong, Dept Comp Sci, Kowloon, Hong Kong, Peoples R China.^Cent China Normal Univ, Dept Math, Hubei 430079, Peoples R China.^Univ Qiqihaer, Dept Math, Heilongjiang, Peoples R China.^Chinese Acad Sci, Inst Appl Math, Beijing 100080, Peoples R China.^Univ Minnesota, Dept Comp Sci, Minneapolis, MN 55455 USA.
摘要：
This work is concerned with analysis and optimal control of a semilinear elliptic partial differential equation involving critical exponent. Some necessary conditions for optimality are given.
期刊：
ADVANCED TOPICS IN BIOMATHEMATICS,1998年:125-129
通讯作者：
Liang, ZJ
作者机构：
[Liang, ZJ] Cent China Normal Univ, Dept Math, Wuhan 430079, Peoples R China.
通讯机构：
[Liang, ZJ] C;Cent China Normal Univ, Dept Math, Wuhan 430079, Peoples R China.
摘要：
The main purpose of this paper is to give several criteria on the existence of travelling wave solutions of some reaction diffusion models in biomathematics.
