对改革供电企业变电检修现行管理模式的探讨

提出了重组专业化的变电检修总公司的战略思路,对电网企业与总公司之间发展新型关系进行了探讨,指出以战略思维构筑战略联盟,保持合作联盟,实现共赢与发展.分析虽是对检修体制改革,同时也是对安全生产管理体制的变革,有利于供电企业的安全生产管理.     

农村劳动力转移模型:基于中国制度背景的构造

本文在对经典的农村劳动力流动模型进行理论梳理的基础上,引入中国的制度变量,试图构建适合中国制度背景的农村劳动力转移模型,同时,运用经验事实对其作进一步的实证检验,并分析了模型的政策含义。     

Intention of Internet-based Customer Involvement in Product Development： A Conceptual Investigation

The paper develops an extension of Technology Acceptance Model （TAM） and puts forward the TAM-VCE conceptual model to explain the intention of intemet-based customer involvement in new product development （NPD）. The findings will help enterprises design Virtual Customer Environments accepted by customer.     

EMBEDDED MATRICES FOR FINITE MARKOV CHAINS

For an arbitrary subset A of the finite state space 5 of a Markov chain the so–called embedded matrix P _A is introduced. By use of these matrices formulas expressing all kinds of probabilities can be written down almost automatically, and calculated very easily on a computer. Also derivations can be given very systematically.     

R&D项目投资评估的实物期权方法初探

本文分析了传统的NPV法在R&D项目投资评估中的缺陷,指出R&D项目投资本质上所具有的期权特性。在此基础上引入了实物期权方法,包括Black-Scholes期权定价方法和Geske期权定价模型。     

Dominance Statistics: A Simulation Study on the d Statistic

Quality &; Quantity - Cliff (1993) has proposed the use of a measure of effect size alternative to traditionalmean differences: δ {? = Pr(xi1 &;gt; xj2) - Pr(xi1 &;lt; xj2)}which,...     

On efficiency of the ratio estimator

Summary The exact mean square error for the ratio estimator of a finite population total based on simple random sampling without replacement is shown to have an expected value less than that of the variance of the ratio estimator based on Midzuno’s scheme, under a usual super-population model.     

工程建设PM、CM和PMC三种模式的比较

PM、CM和PMC是三种不同的工程建设模式,产生于不同的历史阶段和市场条件,有着各自的特点和适用范围。文章介绍了三种模式的基本含义及特征,在组织、合同、工作范围以及风险和责任等方面进行了比较研究,并对三种模式的优势和适用条件进行了分析,最后强调在应用时,应根据项目的不同情况和条件来加以选择。     

封闭式基金的市场流动性研究

本文在给出一个改进流动性指标的基础上 ,利用该指标对封闭式基金的市场流动性进行了分析。研究发现 :封闭式基金市场流动性不存在周内效应 ,周内也无显著的变动模式 ;封闭式基金流通股本规模对市场流动性有显著影响 ,市场偏好次小盘基金 ;封闭式基金市场流动性总体上对基金折价没有显著影响。     

Probability theory in fuzzy sample spaces

This paper tries to develop a neat and comprehensive probability theory for sample spaces where the events are fuzzy subsets of The investigations are focussed on the discussion how to equip those sample spaces with suitable -algebras and metrics. In the end we can point out a unified concept of random elements in the sample spaces under consideration which is linked with compatible metrics to express random errors. The result is supported by presenting a strong law of large numbers, a central limit theorem and a Glivenko-Cantelli theorem for these kinds of random elements, formulated simultaneously w.r.t. the selected metrics. As a by-product the line of reasoning, which is followed within the paper, enables us to generalize as well as to bring together already known results and concepts from literature.Acknowledgement. The author would like to thank the participants of the 23rd Linz Seminar on Fuzzy Set Theory for the intensive discussion of the paper. Especially he is indebted to Professors Diamond and Höhle whose remarks have helped to get deeper insights into the subject. Additionally, the author is grateful to one anonymous referee for careful reading and valuable proposals which have led to an improvement of the first draft.This paper was presented at the 23rd Linz Seminar on Fuzzy Set Theory, Linz, Austria, February 5–9, 2002.