经济学供需模型的制度化改进与初步运用

新古典经济学的基础性分析工具是供需曲线，而这一模型是对现实经济运行的“过度”简化，缺失的重要环节就是交易费用或制度安排。基于新制度经济学对交易费用、制度安排的相关研究，在传统供需曲线模型所包含的资源配置与收入分配两项内容基础上，本文加入了交易费用曲线并对其做了结构化分析，构建了制度化了的供需模型，探索了当前认识条件下经济学供需模型的“统一场论”。进而，本文运用这一模型提出了资产增值的“不可能三角”，需求曲线的两个镜像关系，以需求弹性推导组织要素“侵蚀”能力及合约选择定律，交易费用限定资产交易边界、暗含市场规模的界定等创新性结论，体现出这一理论模型能够深刻诠释现实经济运行的能力，希望以此为我国经济改革发展中存在的一些矛盾与争论提供统一的分析框架。

THE DERIVATION AND APPLICATION OF INSTITUTIONALIZED DEMAND-SUPPLY (IDS) MODEL

The basic analytical tool of neo classical economics is demand and supply model，but the real economy events are over simplified in this model，the missing link is transactional cost or institutional arrangementBased on study review on asset income theory conducted by Irving Fisher，neo institutional economics and contract theory conducted by Steven NSCheung，this paper develops an institutionalized demand supply (IDS) model which concludes a transaction cost curveBy using the IDS model，several innovative conclusions are conducted，including as follows: the existence of impossible triangle in the process of appreciation of asset value，the two kinds of mirror image relationship of the demand curve，the erosion ability of organization factor caused by demand elasticity，transactional cost actually defines the scale boundary and the market scale of the asset transaction