Risk preference heterogeneity in group contests

We analyze the first model of a group contest with players that are heterogeneous in their risk preferences. In our model, individuals’ preferences are represented by a utility function exhibiting a generalized form of constant absolute risk aversion, allowing us to consider any combination of risk-averse, risk-neutral, and risk-loving players. We begin by proving equilibrium existence and uniqueness under both linear and convex investment costs. Then, we explore how the sorting of a compatible set of players by their risk attitudes into competing groups affects aggregate investment. With linear costs, a balanced sorting (i.e., minimizing the variance in risk attitudes across groups) always produces an aggregate investment level that is at least as high as an unbalanced sorting (i.e., maximizing the variance in risk attitudes across groups). Under convex costs, however, identifying which sorting is optimal is more nuanced and depends on preference and cost parameters.     

现阶段我国汇率政策在金融政策组合中的效应分析

尽管对单一宏观政策的研究已经较为深入了，但对两种宏观政策的组合效应的研究还较为缺乏。本文正是从这一角度出发，分析了当前我国实行的积极的货币政策和稳定的汇率政策组合的正负效应。并且指出，尽管这种组合对由于货币供给的内生性造成的货币政策效率低下具有弥补作用，但是却加剧了外部经济的失衡，并且，这种失衡由于“溢出效应”而会影响到内部经济均衡。从而出现了诸如储备机会成本增高、基础货币供应控制的难度加大、准备金制度改革难度加大等矛盾。因此，不应该将牺牲外部均衡来保全内部均衡的做法作为其长期政策取向。     

基于作业成本法的汽车零部件入厂物流研究

汽车零部件入厂物流是公认的最复杂、最具专业性的物流过程,由其所带来的物流成本不仅高而且计算也相当复杂。采用作业成本法——被认为是确定和控制物流费用最有前途的方法——来揭露零部件入厂物流成本冰山的真实面貌。首先根据作业成本法的原理分析汽车零部件入厂物流过程并建立作业中心,然后进一步分析其资源动因和作业动因,最终完成零部件入厂物流成本的核算。     

Optimal Intervention Policies for a Small Monetary Economy

We analyze the gains from trade for a small cash-in-advance economy with endogenous labor supply and learning-by-doing in the accumulation of human capital. Contrary to previous findings, we show that free trade is not optimal independently of the relative amount of cash required for the purchase of each good. Furthermore, a monetary rule à la Friedman can eliminate distortions deriving from the cash-in-advance constraint only under segmented financial markets; in any case, it cannot restore the economic optimum. Finally, we identify government intervention policies, such as wage and export subsidies, that can be welfare improving.     

INCENTIVES AND SOCIAL NORMS: A MOTIVATION‐BASED ECONOMIC ANALYSIS OF SOCIAL NORMS

Abstract It is now commonplace to regard social norms as a subject of growing interest in the economic literature (e.g. game theoretical approaches based on ‘other‐regarding’ individual preferences, the analysis of the impact of rewards or punishment on individuals’ behaviour through experimental economics as well as field experiments, the revival of the institutionalist tradition spurred on by the influential work of Douglas North and followed by many others and the growing influence of neuroeconomics). In this paper, we focus on the relationship between incentives and social norms and survey the literature that could constitute the foundations of a motivation‐based economic analysis of social norms. Our main findings are that (1) the interaction between incentives and social norms is far from obvious since taking social norms into account involves the introduction of supplementary motives, in addition to self‐interest, into the economic analytical framework; (2) the analysis of the interaction between incentives and social norms resists an approach exclusively in terms of crowding‐in and ‐out effects because it is sensitive to whether it concerns behaviours driven by honour or by social stigma; (3) as a result, it is difficult to precisely evaluate the policy implication of the interactions between incentives and social norms.     

CO_2硬化碱性酚醛树脂交联剂的研究

本文重点对树脂砂交联剂的类型和加入量进行了系统深入的研究。在实验中,以试样抗压强度为主要考察目标,考察了氢氧化钾、硅烷、硼砂加入量对试样抗压强度的影响,获得了交联剂加入量的最佳配比,制成了可用于生产的粘结剂。     

Learning-by-doing versus Schooling in a Model of Endogenous Growth

A two sector model of learning-by-doing measured by means of production aggregated over time and of human capital accumulation in a schooling sector is presented. Time utilization is rival between schooling and learning-by-doing. Depending on the sum of elasticities of the accumulated factors (i.e., of production experience and educational human capital) in both sectors, a situation with or without endogenous growth results. Dynamic optimization of the choice between leisure and working and of the division of human capital between education and production is executed. Transitional dynamics are analyzed for a Cobb-Douglas example and a numerical simulation is performed.JEL classification: C61, D90, O41.Acknowledgements The author would like to thank Eric C. Meyer and two anonymous referees for helpful comments. The usual caveats apply.revised version received November 23, 2003     

代建制下财务管理相关问题探讨

本文笔者结合自身的工作经验,对代建制下财务管理过程中出现的问题,进行了简要的总结与分析,并提出了相应的解决建议,以期促进我国代建制下财务管理的发展。     

政府投资项目代建制模式风险管理研究

针对政府投资项目代建模式的风险,分析找出其产生风险的根源。运用风险控制和风险转移的手段,提出相应的风险管理措施,为以后代建制项目的风险管理提供一定参考。     

具有智能交互的网络教学系统

由于在网络教学中,缺乏传统教学的灵活性,因此在网络教学中引入agent,设计基于浏览器/Agent/服务器的网络教学系统,并提出了各个模块的主要功能,使得网络教学更加智能化和个性化。