Asset price volatility in a nonconvex general equilibrium model

Summary. Asset prices and returns are known to vary significantly more than␣output or aggregate consumption growth, and an order of magnitude in excess of what is justified by innovations to fundamentals. We study excess price volatility in a lifecycle economy with two assets (claims on capital and␣a public debt bubble), heterogeneous agents, and increasing returns to financial intermediation. We show that a relatively modest nonconvexity generates a set valued equilibrium correspondence in asset prices, with two␣stable branches. Price volatility is the outcome of an equilibrium selection mechanism, which mixes adaptive learning with “noise”, and alternates stochastically between the two stable branches of the price correspondence. Received: March 19, 1998; revised version: June 2, 1998     

科研机构转制清产核资实务操作研究

转制科研单位的清产核资是一项政策性、系统性很强的工作,其复杂程度也高于一般的日常清产核资。同时,转制清产核资能否规范操作,不仅关系到国有资产是否流失,同时也关系到转制单位集体和职工的合法利益。依据国家现行的有关转制政策,对转制清产核资实施过程中有关财产清查、产权界定、价值重评(或资产评估)以及资本金核定等环节的实施程序、方法和标准,如何进行规范性操作进行了探索。