The rate of convergence to perfect competition of matching and bargaining mechanisms

We study the steady state of a market with incoming cohorts of buyers and sellers who are matched pairwise and bargain under private information. A friction parameter is τ, the length of the time period until the next meeting. We provide a necessary and sufficient condition for the convergence of mechanism outcomes to perfect competition at the linear rate in τ, which is shown to be the fastest possible among all bargaining mechanisms. The condition requires that buyers and sellers always retain some bargaining power. The bargaining mechanisms that satisfy this condition are called nonvanishing bargaining power (NBP) mechanisms. Simple random proposer take-it-or-leave-it protocols are NBP, while k-double auctions (k-DA) are not. We find that k-DAs have equilibria that converge to perfect competition at a linear rate, converge at a slower rate or even do not converge at all.     

集体行动的逻辑与可持续发展的困境

个体理性的效率追求是经济活动的动力,但个体理性往往导致集体非理性。本文从个体理性与集体理性概念的相对性出发,探讨个体、地方政府、国家在经济活动中本位利益的追求与可持续发展目标的背离。纯粹的市场效率追求会导致“市场失灵,”政府在解决“市场失灵”时如果无法有效约束个体理性的本位利益追求与政绩偏好,在可持续发展问题上就会出现一定程度的“政府失灵”。在“双重失灵”的情况下,集体行动的逻辑必然导致可持续发展陷入困境。要在个体理性的效率追求与集体理性的“共同信念”中实现可持续发展战略,必须明确政府责任并进行追加性制度投资。     

我国农村集体土地增值收益分配研究进展

农村集体土地增值收益分配是土地管理中的重点和难点问题。文章基于近年来我国农村集体土地增值收益分配问题相关理论研究成果,对既有文献的研究热点、研究趋势及薄弱环节等进行了分析。通过文案调查法和对比分析法,梳理了近年来我国农村集体土地增值收益分配问题相关文献,研究发现现有理论文献主要集中在集体土地增值机理、集体土地增值分配现状与问题、集体土地增值收益分配方案优化等方面,通过构建理论模型和计量模型方式对农村集体土地增值收益分配问题开展研究成为趋势。文章认为既有研究成果较全面地涵盖了农村集体土地增值收益分配的问题,但在如何明确土地产权主体及产权内容等问题上可进一步深入研究。     

The bargaining set of a large economy with differential information

Summary. We study the Mas-Colell bargaining set of an exchange economy with differential information and a continuum of traders. We established the equivalence of the private bargaining set and the set of Radner competitive equilibrium allocations. As for the weak fine bargaining set, we show that it contains the set of competitive equilibrium allocations of an associated symmetric information economy in which each trader has the “joint information” of all the traders in the original economy, but unlike the weak fine core and the set of fine value allocations, it may also contain allocations which are not competitive in the associated economy. Received: February 15, 1999; revised version: August 9, 1999     

农村集体经济组织长期生存与制度变迁原因探讨——兼论人民公社的建立、失败与乡镇企业的改制

农村集体经济组织因其本身的重要意义而吸引着众多学者对其进行研究.研究农村集体经济组织变迁的目的不仅在于辨明集体经济组织的运行、变迁机理,更重要的是在此基础上预测其发展趋势.无论是改革开放前的人民公社,还是其后的乡镇企业,社区关联性都是其本质属性,即行为主体交往方式具有非匿名性、重复性、关联性等特点.理解经济组织不能仅仅关注组织内部,还要结合组织存在的制度环境,只有以此来解释农村集体经济组织的变迁过程,才能真正把握其本质及发展方向.     

农村集体建设用地流转地权的激励模式

农村集体建设用地流转中存在严重的资金时差悖论,导致难以利用集体土地本身进行融资,土地整理融资难反过来又成为阻碍集体建设用地流转的瓶颈性因素。现有流转模式难以协调各种利益,不能对流转各方产生足够激励,变相征地的方式削弱了农民的土地持续收益能力,未能真正实现城乡建设用地"同质、同价、同权"。因此,应根据利益协调的原则创新制度设计,以地权激励引导社会资源投入,促进集体建设用地顺畅流转。     

The evolution of conventions under incomplete information

Summary. We formulate an evolutionary learning process with trembles for static games of incomplete information. For many games, if the amount of trembling is small, play will be in accordance with the games (strict) Bayesian equilibria most of the time. This supports the notion of Bayesian equilibrium. Often the process will select a specific equilibrium. We study an extension to incomplete information of the prototype conflict known as Chicken and find that the equilibrium selection by evolutionary learning may well be in favor of inefficient Bayesian equilibria where some types of players fail to coordinate.Received: 17 March 2003, Revised: 3 December 2003, JEL Classification Numbers: C72.     

A note on free entry under uncertainty: The role of asymmetric information

In a model of competing managerial firms I show that the equilibrium number of firms decreases with uncertainty if entry is relatively more costly than monitoring. The result adds to the earlier contributions and is consistent with the available evidence.     

The suspension of borrowing: an implicit penalty for loan default under imperfect information

A credit seeker may be suspended from borrowing for a period of time due to a previous default. Such suspension is widely used in bank lending through credit check. Our work analyses the effects of suspension on the investment choice of borrowers under uncertainty and on the lending policy of banks facing asymmetric information. We show that suspension should be tightened at low loan rates, but loosened otherwise, to improve the repayment performance of borrowers. We also show that although credit rationing may not be completely removed due to imperfect information, the excess demand for credit or transitive waiting in the market can actually be attenuated by such efficient use of suspension. Our theoretical predictions are consistent with observed cyclical patterns of changes in lendingrates and suspension severity.     

劳动价值论视角下的信息商品及其劳动分析

信息科学技术革命浪潮不仅创造出一种全新的信息商品,劳动创造价值的形式也发生巨大变化。概述了信息商品及其使用价值和价值的主要特性,并在此基础上分析其派生出来的新现象：创造信息商品价值的劳动具有不确定性;规范信息商品的实现过程成为信息产业发展中亟须解决的问题;信息服务业的劳动创造价值问题。     

云南省大学生到村任职的现状调查与研究

选聘高校毕业生到村任职是新时期我党加强和改善农村基层政权、建设社会主义新农村、全面实现建设小康社会的重大举措。然而,目前大学生村官的状况如何？存在哪些问题？如何使大学生村官队伍建设成为长期战略行动？以云南省大学生村官、乡镇领导、村委会和村民为调查对象,通过对其生活状况、工作状况、思想状况等方面的调查,分析云南省大学生村官存在的主要问题,并提出完善云南大学生村官的建议。     

U.S. Equity Markets and Environmental Policy. The Case of Electric Utility Investor Behavior During the Passage of the Clean Air Act Amendments of 1990

We examine electric utilityinvestor reaction surrounding twenty-twomilestones associated with the passage of theClean Air Act Amendments of 1990. Resultssuggest that investors did not react sharply tothe passage of the Amendments. To the extentthat statistically significant effects wereobserved, we interpret the results as moreindicative of investor concern over resolutionof uncertainty surrounding the politicalprocess and resulting provisions than ofconcern over the expected costs of compliancefollowing passage of the Amendments. Weobserved little, if any, difference betweenutilities subject to Phase I restrictions andthose not subject to Phase I. Finally, changesin monthly excess returns appear to haveresulted from changes in U.S. interest ratesand investor concern over power industryderegulation. We view our results as importantbecause any wealth effects due to environmentalregulations represent a real economic costassociated with their implementation. In thissense, we view the results as good news forU.S. environmental policy makers.     

美国金融生态的恶化与量化宽松货币政策就业效应的失灵

在量化宽松货币政策下,美国的经济衰退得到了显著遏制,但失业率却持续在高水平运行,表明量化宽松货币政策对降低失业水平无效。研究显示,金融危机造成了美国金融生态的明显恶化,银行体系采取了紧缩信贷的应对措施,因此,美国政府通过量化宽松货币政策释放的流动性被截留在银行体系内部,不能形成满足市场投资需求的流动性供给,国内投资不能扩张,失业率就不可能下降,其结果必然导致量化宽松货币政策就业效应的失灵。     

Technological change under residual risk regulation: The case of coke ovens in the U.S. steel industry

An engineering-economic model is used within a dynamic setting to determine the least cost mix of investment and import activities as the U.S. steel industry faces successively tighter controls on coke oven emissions over the next 10 years. In response to Maximum Achievable Control Technology (MACT) standards proposed for 1995, U.S. steel producers would likely export their toxic pollution by importing 6 million tons of coke per year. About 4 million tons of coke oven capacity is retrofit and about 1 million tons of annual coke consumption is replaced by new iron technologies, such as Corex. The Lowest Achievable Emission Rate (LAER) standards proposed for 1998 roughly double the coke oven retirements estimated to occur under MACT. Coke imports also are substantial but are no higher than under MACT because the additional time allows the industry to invest in more coke-saving blast furnaces and in new less toxic coke-making technologies, such as the Jewell process. The LAER standards in conjunction with higher capital costs, however, force coke imports to more than 8 million tons per year and sharply increase imports of semi-finished steel. Such a situation could exacerbate existing disputes on international steel trade.The authors are associate professor, instructor, and graduate student, respectively. This research was performed under the sponsorship of the U.S. Department of Interior, Bureau of Mines Distinguished Young Scholar Award Administered by Oak Ridge Associated Universities for the Bureau of Mines. Naturally, the usual disclaimer applies.