Strategy-Proof Probabilistic Mechanisms in Economies with Pure Public Goods

Public good economies where agents are endowed with strictly convex continuous single-peaked preferences on a convex subset of Euclidean space are considered. Such an economy arises for instance in the classical problem of allocating a given budget to finance the provision of several public goods where the agents have monotonically increasing strictly convex continuous preferences. A probabilistic mechanism assigns a probability distribution over the feasible alternatives to any profile of reported preferences. The main result of the paper establishes that any strategy-proof (in the sense of A. Gibbard, Econometrica45 (1977), 665-681) and unanimous mechanism must be a random dictatorship. Journal of Economic Literature Classification Numbers: D70, D71, H40, C60.     

耕作技术的创新、推广、竞争和中国发展农业的机遇

本文首先指出，农业是当前世界科学界关注的国际四大问题之一。作者在全面评议两次“绿色革命”的成就与问题、传统有机农业再度兴起和展望未来型精密耕作技术之后，分析了现在耕作技术竞争的政治与经济背景，并提出了中国如何把握发展农业机遇的一些见解。     

小议政府在私立学校发展中的作用

教育是一种准公共品,可以由私人提供。私立学校是对公立学校的有益补充,有其存在的可行性和必要性。目前我国的私立学校正在蓬勃发展。政府应鼓励、支持私立学校的发展,既支持非营利性私立学校,也支持营利性私立学校。私立学校的学费虽高,但市场的供求关系会对其加以调节,无须政府过多干涉。政府应以各种方式鼓励有识之士和广大群众投资教育,并对私立学校提供优惠政策,促进其发展壮大。     

南和兴业路综合管廊设计

为了有利于集约化利用城市地下空间,避免和减少城市地面、路面的重复开挖,将各种市政管线共同置于管廊内。文中简要介绍了南和兴业路综合管廊设计。     

HAPPINESS ECONOMICS FROM 35 000 FEET

Abstract The economics of happiness, or subjective well being, is an expanding field, with a growing number of applied papers reporting empirical associations between happiness and other variables. This paper takes a broad view of the topic, aiming to provide an outline of the literature in relation to happiness economics' origins, definitions, theory, methods, applications, critiques, relations with other areas of economic research, political and policy connections, and promising directions for future inquiry.     

中国工业制成品出口价格贸易条件变化的影响因素

中国经济增长主要得益于对外贸易的福利,但贸易条件是否出现恶化呢?文章利用相关指数计算了2002年～2010年中国整体和部分行业的贸易条件,发现中国出口产品的价格贸易条件呈现先下降再逐步上升的态势,机电产品的表现更加明显;研究了价格贸易条件变化的影响因素,提出了改善中国贸易条件的对策。     

薪酬激励的效用递减问题探析

本文主要从薪酬激励的概念和目的着手,分析了传统的薪酬激励的弊端,以及传统的薪酬激励中出现的边际效用的现象,从而初步解释了存在这种边际效用的原因,初步提出了一些解决这种现象的渠道。     

Social distance,heterogeneity and social interactions

A crucial ingredient in social interaction models is the structure of peer groups, which link individuals with similar characteristics. We propose and study a dynamic binary choice model with social interactions in which heterogeneity of peer group effects is modeled introducing diversity in individual characteristics and linking pairwise influences to a social distance between individuals. Our framework allows for mimetic as well as anti-mimetic interactions and a heterogeneous structure of peer groups across individuals. Dynamic equilibria are studied in the limit when the number of agents is large. We show that the model exhibits multiple equilibria resulting from conflicts between various group pressures the individuals are subjected to. We study in particular the correlation in the population at equilibrium between the characteristics of the agents and their decisions: this quantity has an interesting empirical interpretation and solves a simple analytical equation when the number of agents is large. Finally we discuss the empirical content of the model and present a consistent estimator for the parameter describing which is consistent for any typical population regardless of the structure of individual characteristics.     

时变条件下标号法在危险货物运输路线选择中的应用

随着经济的发展,危险货物的生产量和运输量都在不断的增长。在时变网络条件下的危险货物运输过程中,运输成本和运输风险随着时间的变化而有所不同。本文建立了危险货物运输的路线选择模型并给出其合理的解决方法,该模型不仅使运输成本、运输风险达到最低,而且将运输时间对运输风险的影响纳入其中,对减少危险货物运输事故有重要的实用价值。     

连云港港口货物吞吐量自适应过滤预测模型及其Excel宏实现

利用自适应过滤预测法对连云港港口2008年前几个月货物吞吐量数据建立港口吞吐量预测模型,通过VBA编程实现Excel的宏按钮操作,按照预测误差方差最小原则交互实现迭代功能,选择对最小预测误差方差贡献最小的一期对应的权值作为最佳权值进行预测,获得了精确度较高的预测结果。