Abstract:The methodology of case study which is a main body of positive analysis based on experience has been widely adopted in NIE. This methodology is similar to small sample study which was first applied by R·H·Coase,and fits in with complication of institution and institutional evloution.But the model of rational choice is popular in the study of NIE in China,because those economists believe that to make it a main stream is more important than to know precisely the process of institutional change,which in fact hindered economists from developing NIE further in China.

Abstract:With the development of capital market and the accumulation of financial assets,the volatility of asset prices has posed challenges to monetary policy in many dimensions.This paper studies the relationshop between asset prices and traditional monetary policy targets,such as inflation and general price level;the effects of asset prices volatility on the consumption,the investment and the safety of financial system in the mechanism of monetary policy transmission.Debate on whether and how to deal with asset prices in monetary authority practices is discussed as well.The paper ended with some questions raised for further study.

Abstract:Optimal Import and industrial policies are derived in a world of imperfect competition with asymmetric information. The main findings are as follows. If duopolys play Cournot, the policy rule that could induce domestic firm to reveal its true type will implement the ex\|post efficient outcome. However, if we consider spatial competition in circular\|city, production subsidy is equivalent to tariff and we can not get first\|best outcome. Indeed, the constant tariff equal to unit transportation cost is optimal. our results imply that optimal intervention and whether it can eliminate the efficiency loss for asymmetric information depend on the type of competition instead of the information structures, and it will not be distorted.