Credit rationing had been put forward early in 《 monetary theory 》 of keynesin 30 ’ s . afterwards western scholars carried on the study and research to this problem continuously . till 80 ' s jaffee and russell , keeton , stiglitz and weiss and so on bring the phenomenon of credit rationing into the information economics , upbuilt the current credit rationing theory based on the incomplete information theory 本文创新之处在于在运用信贷配给理论解释货币政策信贷渠道不畅方面做了新的探讨,在bernanke & blinde的信贷传导渠道理论分析的基础上加入了信贷配给的影响,并在理论分析的基础上,运用回归方程及引入虚拟变量对我国实际情况进行量化分析,将通货膨胀和通货紧缩两种情况分别进行讨论。
But in the second phase , all of these theories can still be categorized into 4 kinds : dynamic comparative advantage theories , such as the new factors theories by baldwin and kenen , the life - cycle theory by vernon and hirsh , etc ; intra - industry trade theories such as product differentiation model by stiglitz and dixit , the strategy trade theory by spense , brander and krugman , and so on ; the endogenous trade theory such as technology overflow effect and learning curves theory by romer and krugman , the neo - classic trade theory by tucher and young , and the like ; and the competitive advantage theory by michael porter 在这一时期,经济学家们提出了形形色色的理论,出现了“百家争鸣”局面。基本上可以归于以下四大类型:一是动态的比较优势理论;二是产业内贸易理论;三是内生国际贸易理论;四是竞争优势理论。各个阶段的比较优势理论有其时代特点,但一个共同点是:比较优势始于成本差异,并一直没有突破成本差异,而不考虑产品的附加值。
Based on grossman and stiglitz ( 1980 ) , we develop a simple model , incorporating both information asymmetry and market segmentation , and derive a relative pricing equation for a shares and b shares . our theoretical model supports the various arguments and factors . the 5th chapter of this paper focuses on the empirical study on china ' s a - share , b - share and h - share market from jan . 1994 to dec . 2000 本文第四章首先根据中国股市的特点建立了市场分割下的资产定价模型，并基于grossman和stiglitz （ 1980 ）的建模思路，将信息不对称问题引入模型，推出市场分割问题与信息不对称问题并存的扩展模型，得到不同市场股票定价的具体表达式，然后在该模型基础上找到各种可能影响价格差异的因素的支持证据。
Professor stiglitz has written textbooks that have been translated into more than a dozen languages , widely used by universities around the world . his book globalization and its discontents , published in 2001 , has been translated into 28 languages and is an international bestseller . professor joseph e . stiglitz was born in indiana in 1943 此外，史迪格里兹教授出版的经济学教科书被翻译成十多种语言，为全球多间大学采用；而他二零零一年的著作globalizationanditsdiscontents为世界畅销书，已被译成廿八种语言。
