This paper puts forward the characteristics of the rationality of the systems from the perspective of the economical efficiency of systems,analyzes the system costs and system benefits of the educational management systems in colleges and universities,and set forth.

The thesis analyzes the evolution of enterprise clusters competition advantage based on the life-cycle of enterprise clusters, points out the rule of the evolution of enterprise clusters: from static competition advantage based on agglomerate economy to dynamic competition advantage based on innovative networks, then discusses the dynamic.

A Study on Estimating Agglomeration Economies of China Urban: The Case of Tianjin;

Micro-foundation of Agglomeration Economies;

In this paper the authors first analyze the cost of cluster enterprises and market equilibrium,then suggest two methods to enlarge cluster scale,and point out that it is essential to increase agglomeration economies for industrial cluster development.

Empirical research into agglomeration economy of coal-resources type cities;

Based on data of 34 major cities in China,analysis on the effect of agglomeration economy on manufactory industry productivity were carried out,and the result shows that agglomeration economy really accounts for the discrepancy of productivity among big cities of China,in which the influence of localization economies is more important than that of urbanization economies.

In this condition,factory owners may enjoy high efficiency brought about by agglomeration economy in large cities,but need not.

This paper,by studying relative literatures,reveals completely the reason and the tendency of urban agglomeration economy and makes remarks in the final conclusion.

Now, agglomeration economy has become the most interesting regional economic theory in the world, and it is regarded as the engine of regional economic growth.

The factors influencing agglomeration economy can be mainly classified into such two categories as transportation cost and production density.