An Average Derivative Estimation of Stochastic Frontiers

This paper utilizes the average derivative estimation of Stoker (1986) and the pesudo-likelihood estimation of Fan, Li, and Weersink (1996) to estimate a semiparametric stochastic frontier regression, y = g(x) + , where the function g(.)is unknown and is a composite error in a standard setting. The proposed semiparametric method of estimation is applied to data on farmers' credit unions in Taiwan. Empirical results show that the banking services of the farmers' credit unions is subject to economies of scale, but high degree of cost inefficiency in operation.     

Applying efficiency measurement techniques to the measurement of productivity change

Deterministic frontier analysis (DFA), stochastic frontier analysis (SFA), and data envelopment analysis (DEA) are alternative analytical techniques designed to measure the efficiency of producers. All three techniques were originally developed within a cross-sectional context, in which the objective is to compare the efficiencies of producers. More recently all three techniques have been extended for use in a panel data context. In the latter context it is possible to measure productivity change, and to decompose measured productivity change into its sources, one of which is efficiency change. However when efficiency measurement techniques, particularly SFA, have been applied to panel data, it has infrequently been made clear what the objective of the analysis is: the measurement of efficiency, which may vary through time as well as across producers, or the measurement and decomposition of productivity change. In this paper I explore the use of each technique in a panel data context. I find DFA and DEA to have achieved a more satisfactory reorientation toward productivity measurement than SFA has.     

汽车制造企业质量成本核算实证研究

质量成本核算是企业质量成本管理的一项重要内容,是企业优化质量成本结构,进行质量改进的重要基础。本文通过实证研究,提出了对汽车制造企业进行质量成本核算的一般方法,对汽车制造企业的质量成本项目进行了详实的分类分析,为同类企业实施质量成本管理工作提供了应用参考。     

Linear Programming Models for the Measurement of Environmental Performance of Firms—Concepts and Empirical Results

I use linear programming models to define standardised, aggregate environmental performance indicators for firms. The best practice frontier obtained corresponds to decision making units showing the best environmental behaviour. Results are obtained with data from U.S. fossil fuel-fired electric utilities, starting from four alternative models, among which are three linear programming models that differ in the way they account for undesirable outputs (pollutants) and resources used as inputs. The results indicate important discrepancies in the rankings obtained by the four models. Rather than contradictory, these results are interpreted as giving different, complementary kinds of information, that should all be taken into account by public decision-makers.     

基于中心灰靶决策模型的设备采购评标

设备采购评标是属于典型的多目标综合决策问题,利用中心灰靶决策模型并结合层次分析法进行设备采购评标,并给出评标实例。评标结果表明,基于中心灰靶决策模型的设备采购评标方法能有效地克服目前国内通常采用的评标方法的缺点,为设备采购评标提供了一种定量、客观的评标方法。     

The Bell Curve in Psychological Research and Practice: Myth or Reality?

The expression “the bell curve” designs both a kind of statistical distribution and the title of a famous and controversial book by Herrnstein and Murray. The first is so attractive that the second refers to it to give more credibility to its questionable theories on intelligence. The point is that, during the 20th century, the bell curve has assumed a more and more important role in psychological research and practice and have become both a reality and a myth. In the first case (reality) we can assist to appropriate applications of a real useful statistical concept. In the second (myth) we can have two kinds of attitudes: one attitude is typical of those researchers who search for normality in all their data and variables, just as Parsifal used to search for the Holy Graal (we call this “the Parsifal attitude”); the other is typical of those researchers who give normality for granted and act as if it were a Platonic Idea (we call this “the Plato attitude”). The article discusses the role of the normal distribution in psychological research and practice and shows how it can be dangerous to treat the bell curve as a God or an Idol.     

基于数据融合的自来水浊度检测方法

为了提高流动电流仪(SCM)对自来水浊度检测的精度,文章提出了一种基于神经网络数据融合技术的数据处理方法。该方法可以消除测量中的原水流量、供电电源波动、絮凝剂浓度、温度等干扰量对流动电流仪的影响,提高了测量的精度。     

电信业顾客满意度测评指标体系的建立与检验

本文结合CS理论模型和电信业的具体业务,提出了电信业顾客满意度测评指标体系,并在预调查阶段运用信度分析和因子分析,证明了该指标体系的有效性和实用性.     

大型变压器在线监测技术及其发展

该文综述了国内外大型变压器在线监测及故障诊断技术的现状,针对电力变压器结构的复杂性及分布广、少人或无人值班等工作特点,提出了红外温度监测技术及GPRS技术在大型变压器远程在线监测及故障诊断中的应用前景。     

美国政府审计人员角色对我国绩效审计的启示

我国的“审计风暴”暴露了政府资金使用效率问题，为此，我国的政府审计应转向绩效审计。美国是绩效审计发展比较成熟的国家之一，其政府审计人员履行诸多角色，包括查证所报告绩效信息的可靠性和有效性、积极协助管理者建立和使用绩效评价体系、利用现有的绩效计量方法对所审计部门进行评价完成验证工作等。借鉴美国经验，我国构建绩效审计应建立相关的绩效审计准则，转变管理层和审计人员的观念，提高审计人员素质。