Neutrality in arrow and other impossibility theorems

Summary. Although not assumed explicitly, we show that neutrality plays an important role in Arrow and other impossibility theorems. Applying it to pivotal voters we produce direct proofs of classical impossibility theorems, including Arrow's, as well as extend some of these theorems. We further explore the role of neutrality showing that it is equivalent to Pareto or reverse Pareto, and to effective dictatorship for non-null social welfare functions satisfying the principle of independence of irrelevant alternatives. It is also equivalent to Wilson's Citizens' Sovereignty--which is related to the intuition that symmetry over alternatives makes social preference depend only on citizens' preferences. We show that some of these results are more fundamental than others in that they extend both to infinite societies and to considerably smaller domains of preferences. Finally, as an application of Arrow's theorem, we provide a simple proof of the Gibbard-Satterthwaite theorem.Received: 13 April 2000, Revised: 6 December 2002, JEL Classification Numbers: D71, C70.I thank Salvador Barberá, Luis Corchón, Cesar Martinelli, Eric Maskin, Tomas Sjöström, Ricard Torres, José Pedro Ubeda, and an anonymous referee for feedback. The proofs of Arrow's theorem and two Wilson's theorems come from a note I wrote in 1987 at Universitat Autónoma de Barcelona (Ubeda [16]). In 1996 Geanakoplos [7] wrote a proof of Arrow's theorem similar but not identical to mine. All work in this paper is independent of his.     

入世以来两岸经贸关系发展中的问题及其影响

入世6年来,两岸经贸快速发展,但台湾在祖国大陆贸易和利用外资中的地位不断下降。两岸经贸关系至今仍未实现正常化,这对两岸经济发展均带来不利的影响。     

语言与文化的关系及了解文化的策略

语言是学习文化的主要工具,人在学习和运用语言的过程中获得整个文化;文化知识影响到语言学习者的各个学习阶段,对学习者变得越来越重要.文化教学的策略是创造一个真实的教室环境等.     

超市进货交易关系法律调整的若干问题探讨——论“零供”关系法律调整

近年来，我国零售商供应商矛盾突出，引起了各方关注。商务部等五部委发布的《零售商供应商公平交易管理办法》，是近年来专门调整零供关系的政府部门规章，在稳定流通秩序方面发挥了一定的作用，但对此也有一些不同观点。为完善零供（买卖）关系的法律规范体系，推进和谐商业环境及商事法治建设，本文对调整零供关系的法律属性，少数零售企业恶意占压、骗取供应商贷款的综合治理，风险预誓机制等相关问题提出了自己的一些见解。     

发展我国养老保险的思考

本文分析了现阶段养老保险中人口老龄化的压力日益加剧，覆盖范围明显过窄，已入保群体“空账运行”，养老待遇过低等问题，提出了提高退休年龄、降低缴费比率、将社会统筹基金与个人账户基金实行分账管理、让基金保值增值加快社会保障制度立法等若干相关政策建议。     

Tolerance for uncertainty and the growth of informationally opaque industries

Hofstede's [Hofstede, Geert H. 1980. Culture's consequences: international differences in work-related values. Thousand Oaks, CA: Sage.] cross-country psychological survey of IBM employees finds that some countries (societies) are systematically less tolerant of uncertainty, while uncertainty-tolerance is shown by some theoretic models to be essential to the growth of emerging sectors about which less is known. This paper first uses Durnev, Morck, and Yeung's [Durnev, Art, Morck, Randall, and Yeung, Bernard. 2004. Value-enhancing capital budgeting and firm-specific stock return variation. The Journal of Finance. 59(1): 65–105.] methodology to identify these informationally opaque industries. The hypothesis is then made that countries characterized by high uncertainty aversion (measured by Hofstede's indicator, and two other alternative indicators) will grow disproportionately slower in industrial sectors where information is less available. Using the Rajan and Zingales [Rajan, Raghuram G. and Zingales, Luigi. 1998. Financial Dependence and Growth. American Economic Review. Vol. 88(3): 559–586.] “difference-in-differences” methodology, which is relatively free from the endogeneity problem, the study provides robust evidence of such an industrial growth pattern in 34 countries and 36 manufacturing industries. It also shows that national uncertainty aversion is not driven by underdevelopment of financial sector, inadaptability of civil law systems, lower level of economic or human capital development, labor market inflexibility, or any of many other institutional factors. The results remain robust when religious (Catholic vs. Protestant) composition is used as an instrumental variable for national uncertainty aversion. The international evidence presented helps explain why some countries are slower in embracing “new” (vs. traditional) industries.     

基于博弈视角的供应链伙伴关系研究

科学技术的飞速发展、经济的全球化以及竞争的日益激烈，使得企业要想在市场上取得成功，就必须和供应商、客户建立紧密的伙伴关系，通过整体协作增强各节点企业的竞争力。对于供应链伙伴关系，可以从交易费用、资源观、博弈论等到不同视角进行研究，本文将从博弈的视角，通过企业间博弈的不同阶段，包括囚徒困境、鹿的陷阱以及单方承诺三个阶段，对供应链内企业间的伙伴关系进行探讨，揭示其内在规律。     

刍议"以德治国"的特殊社会功能

本文道德建设探讨了以德治国的社会功能。阐述了“以德治国”的重要性和必要性。     

客户作业成本法在客户关系管理中的运用

不同客户给企业带来的利润不同 ,客户间存在的明显差异 ,传统的成本核算方法以产品为导向设计 ,不能识别这种差异 ,不适用于客户关系管理。客户作业成本法以客户为导向 ,采用作业成本法核算客户成本 ,有助于更好的进行客户关系管理 ,帮助企业牢牢抓住最主要的客户。     

中国人口资源困境的认识论根源探析--新发展观视野中的"天人关系"

从我国当前人与自然之间关系紧张、对立和冲突的事实出发 ,从新发展观层面审视当代人与自然的关系 ,揭示了当代中国自然资源有限性与人类需求发展无限性矛盾的严重程度及其对当代中国社会发展的制约 ,提出化解天人矛盾的理论路径。