Analyzing the substance of cost economy and the basic theory of our Chinese cost researchers, the author points out that under the market economy, cost should be the core factor for the enterprise to get competitive advantages.

Research on Economic Cost of Natural Resources Assets from the View of Rights and Interests Achievement of Different Objects;

The paper points out the present fixed exchange-rate system has alredy hindered the convey of policies and is not adaptable to the present macroeconomic situation after analyzing its economic cost and the effect of the macroecomic policies, and draws a conclusion according to the swan model that presently the truly managerial floating exchange-rate system is the optimal choice.

There is a defect in classical model,Geometric Brown Motion,in which random jump is not allowed in describing time varying stock price some random jump were added to Geometric Brown Motion and the effect of executive stock option on economic value of company economic cost as well as executive,s economic value were discussed.

In this paper,the connotation,types and composition of the economic costs of urbanization are discussed and the economic costs of urbanization in Chongqing municipality are calculated according to its economic and social development.