科斯产权理论的适用范围与土地产权理论的发展

科斯提出,只要财产权是明确的,并且交易成本为零或者很小,那么,无论在开始时将财产权赋予谁,市场均衡的最终结果都是有效率的。科斯的产权理论对于优化资源配置、完善产权制度具有重要意义,但其对于土地这一不一定具有可替代性的资产,并不完全适用。通过实例定性分析科斯产权理论的局限性和适用范围,阐述土地产权位移理论提出的背景,为土地产权理论的进一步发展提供可借鉴的参考。     

享年次高的诺贝尔奖得主——新制度经济学大师罗纳德·科斯

1991年诺贝尔经济学奖得主、英国和美国(双重国籍)经济学家和法学家罗纳德·科斯是交易成本理论、科斯定理和科斯猜想的首创者,法律经济学和新制度经济学的开山鼻祖,产权理论和产权经济学的奠基人,他开启了产权理论、法律经济学和新制度经济学三个领域的研究方向。科斯是国际经济学界的泰斗级大师和巨匠,他在阐述经济组织产生的原理、交易成本分析以及推动法学、经济史和组织理论的发展方面作出重要贡献,发展了新古典经济学,开创了现代企业理论。科斯一生都关切和热爱中国,一直密切关注着中国的经济改革,其经济理论和深邃思想对中国的经济改革影响巨大而深远。     

No Arbitrage in Discrete Time Under Portfolio Constraints

In frictionless securities markets, the characterization of the no-arbitrage condition by the existence of equivalent martingale measures in discrete time is known as the fundamental theorem of asset pricing. In the presence of convex constraints on the trading strategies, we extend this theorem under a closedness condition and a nondegeneracy assumption. We then provide connections with the superreplication problem solved in Föllmer and Kramkov (1997).     

科斯定理与水资源的有效配置

科斯定理强调了产权的确定及其自由交易对于实现资源配置最优化的重要意义。本文将科斯定理应用于水资源的研究中 ,提出了我国进行水权界定及其交易的重要性 ,并分析了界定水权及建立水权交易市场时可能遇到的几个问题 ,如初始水权界定问题、水权市场的局限性问题等     

An Experimental Study of the Effect of Private Information in the Coase Theorem

We investigate, in an experimental setting, the effect of private information on the Coase theorem's predictions of efficiency and allocative neutrality. For a two-person bargaining game, we find significantly more inefficiency and allocative bias in the case of private information compared with the case of complete information. We also find substantial bargaining breakdown, which is not predicted by the Coase theorem. For the case of private information, we reject the Coase theorem in favor of the alternative of a generalized version of the Myerson—Satterthwaite theorem, which predicts inefficiency, allocative bias in the direction of the disagreement point, and some bargaining breakdown.     

经济转型国家与资本外逃

中央集权的计划经济国家在经济体制转向市场经济的过程中普遍存在着资本外逃的问题,作为经济转型的成本之一,资本外逃加剧了转型国家宏观经济的不稳定,延长了经济转型过程中的阵痛期。回顾有关资本外逃和经济转型文献,从体制转型的角度剖析转型国家资本外逃的深层次原因,就如何防范、减少资本外逃提出相应的对策建议。     

Using volume to prove Sperner’s Lemma

We provide a novel proof of Sperner’s Lemma that is intuitive and elementary if certain simple properties of Lebesgue measure are known. The research of A. McLennan is partly funded by the Australian Research Council grant DP0773324. This paper was partly written while he was a member of the Discipline of Economics, The University of Sydney. McLennan also gratefully acknowledges the hospitality of the Economic Theory Center of the University of Melbourne. The research of R. Tourky is partly funded by the Australian Research Council grant A00103450. This paper was partly written while he was a member of the Department of Economics, Purdue University.     

Factor substitution and factor intensities in models with more factors than goods

This paper considers the commodity prices–factor prices relation in models with more factors than consumption goods. Under some simple factor substitutability assumptions, many results in the   n  ×  n   cases have counterparts in the   l  ×  n   cases. The proportional price changes of the "middle factors" will be trapped between those of the "extreme factors". A weak and a strong Stolper–Samuelson theorem can also be proven. If the numbers of goods and perfectly complementary factors are equal and the production functions have the nested constant elasticity of substitution form, two of the complementary factors would have the most extreme relative price changes, regardless of the factor intensities.     

Calibrating a Diffusion Pricing Model with Uncertain Volatility: Regularization and Stability

A regularized (smoothed) version of the model calibration method of 1 ) is studied. We prove that the regularized formulation is solvable and that the solution depends continuously on the input data (observed derivative security prices). Associated issues of model credibility, stability, and robustness (insensitivity to model assumptions) are discussed. The Implicit Function Theorem for Banach spaces is used for the stability proof, and some numerical illustrations are included.     

A new proof of the maximum principle

Summary. We offer a new proof of the maximum principle, by using the envelope theorem that is frequently used in the standard microeconomic theory. Received: April 11, 2002; revised version: June 26, 2002 Correspondence to: K. Shimomura