网络商品价格搜寻与实证分析

本文以实证的方式研究了网络商品的价格离散程度,证明了由于互联网使信息在市场中呈现均衡分布,成本与价格的透明度被提高,从而网上商品价格也趋于收敛。在完全信息市场上,当信息获取成本极低或为零时,交易者反而减少了从事信息收集的积极性,信息搜寻者的搜寻周期和次数都将减少,决策的速度从而可以加快。网上信息搜寻沿着特定的路径进行,搜寻成本已不再是信息搜寻中最主要的影响因素,市场的成熟情况、网络的传输率等将成为搜寻原则中新的内容。     

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     

绝缘油耐压测定仪在变压器油击穿电压试验中的应用

通过用绝缘油耐压试验仪对变压器油击穿电压的测定试验,分析了测定过程中出现的异常现象及测定值产生误差的原因。     

Which Elasticity? Estimating the Responsiveness of Taxpayer Reporting Decisions

In this paper we present estimates of the responses of individuals to marginal tax rates in their reporting of income, using data from individual tax returns for the year 1995. One estimation method is ordinary least squares regression. A second method uses quantile regression, which provides evidence on behavioral responses at different points (or quantiles) in the distribution of income and so is relevant to the question of whether the responses of, say, the rich differ from those at other points in the income distribution. Our results clearly indicate that marginal tax rates affect the reporting decisions of individuals. However, there are significant differences in the marginal tax rate reporting responses for the various types of reported income, there are major differences across income classes, and there are notable differences in the estimated responses across estimation methods.

持续利用的自然资源价格论

本文提出了自然资源持续利用的福利准则及价格构成，并且还阐述了有关自然资源持续利用的价格理论问题。旨在完善自然资源的价格理论体系。     

存款保险制度的产生发展及其理论基础

本文通过对存款保险制度在国际上产生发展的背景分析 ,发现该制度在实践中有内在的必然性 ,在理论上有坚实的基础 ,银行的存在是金融效率所在 ,尽管挤兑可能会发生甚至迅速演化为银行危机 ,但不能否定银行的客观必要性。相反 ,需要防止挤兑和银行危机发生的制度安排 ,其中没有任何一种安排能够取代存款保险制度。中国现在比以往任何时候都需要采纳这一制度以适应市场化金融改革开放的需要 ,当然相应的技术问题仍需要解决。     

采油设备状态监测在油田安全生产的意义

采油设备的安全运行,直接关系到油田的生产效率和安全,通过采油设备的科学化状态检测,对油田采油工作的运行具有重要的意义,文章在分析采油设备状态监测理论意义的基础上,对采油设备状态监测管理的内容进行探讨,在此基础上提出了加强采油设备日常监测的措施,为提高油田的安全生产,设备的使用效率和使用寿命,作出理论研究和参考。     

中国石油企业环境保护战略规划研究

针对石油企业环境问题的现状,采用SWOT分析法,分析了石油企业实行环境保护战略的所面临外部的机会与威胁及内部的优势与劣势,从石油企业环境保护战略的基本原则、各阶段目标及战略重点方面进行了规划,研究结果有利于国家石油资源的战略安全、油田所在地的经济振兴和城市的稳定发展及石油企业的可持续发展。     

肯德基“秒杀”事件引发的促销策略思考

互联网技术改变了人们的生活方式及购买行为,企业为了适应环境的变化纷纷导入网络营销观念。本文以市场营销学为理论基础,分析了肯德基2010年4月的一次促销策略存在的问题,并对企业在互联网背景下制定促销策略提出个人见解。     

药品价格管理政策综述

本文阐述国际上通行的几种药品价格管理政策,总结了我国药品价格管理政策的历史和现状,最后对我国药品价格管理政策的趋势做出预测。