Sample Design and Allocation for Random Digit Dialling

Sample design and sample allocation methods are developed for random digit dialling in household telephone surveys. The proposed method is based on a two-way stratification of telephone numbers. A weighted probability proportional to size sample allocation technique is used, with auxiliary variables about the telephone coverage rates, within local telephone exchanges of each substrata. This makes the sampling design nearly “self-weighting” in residential numbers when the prior information is well assigned. A computer program generates random numbers for the local areas within the existing phone capacities. A simulation study has shown greater sample allocation gain by the weighted probabilities proportional to size measures over other sample allocation methods. The amount of dialling required to obtain the sample is less than for proportional allocation. A decrease is also observed on the gain in sample allocation for some methods through the increasing sample sizes.     

Progressive stress accelerated life tests under finite mixture models

In this paper, progressive stress accelerated life tests are considered when the lifetime of a product under use condition follows a finite mixture of distributions. The experiment is performed when each of the components in the mixture follows a general class of distributions which includes, among others, the Weibull, compound Weibull, power function, Gompertz and compound Gompertz distributions. It is assumed that the scale parameter of each component satisfies the inverse power low, the progressive stress is directly proportional to time and the cumulative exposure model for the effect of changing stress holds. Based on type-I censoring, the maximum likelihood estimates (MLEs) of the parameters under consideration are obtained. A special attention is paid to a mixture of two Rayleigh components. Simulation results are carried out to study the precision of the MLEs and to obtain confidence intervals for the parameters involved.     

企业契约形式、财权安排与财务治理演进

本文认为,企业契约形式与财权安排及财务治理具有非常密切的内在联系。对我国不同时期企业契约形式的考察,发现财权安排具有内在逻辑,企业财务治理在不同历史时期具有不同的演进特征。     

The generalized Stackelberg equilibrium of the all-pay auction with complete information

We characterize the equilibrium of the all-pay auction with general convex cost of effort and sequential effort choices. We consider a set of n players who are arbitrarily partitioned into a group of players who choose their efforts ‘early’ and a group of players who choose ‘late’. Only the player with the lowest cost of effort has a positive payoff in any equilibrium. This payoff depends on his own timing vis-a-vis the timing of others. We also show that the choice of timing can be endogenized, in which case the strongest player typically chooses ‘late’, whereas all other players are indifferent with respect to their choice of timing. In the most prominent equilibrium the player with the lowest cost of effort wins the auction at zero aggregate cost. We thank Dan Kovenock and Luis C. Corchón for discussion and helpful comments. The usual caveat applies. Wolfgang Leininger likes to express his gratitude to Wissenschaftszentrum Berlin (WZB) for its generous hospitality and financial support.     

基于合作关系的供应链信息共享模式研究

首先研究了供应链上下游合作伙伴间信息共享博弈情况，并分析了影响信息共享的障碍因素。然后，从合作伙伴合作关系的视角探讨了供成链中合作伙伴的类型及合作目的，最后以此为基础构建出供应链合作伙伴的信息共事模式及技术支撑体系。     

区域性现代港口物流信息平台系统设计研究

以天津港及其现代物流发展的现状为背景,通过对物流系统需求分析,提出天津港物流信息系统存在的问题,并结合需求分析进行了区域性现代港口物流信息平台系统设计研究,构建了包括通讯专属网络、网络平台、系统管理平台、数据交换平台、应用系统平台和门户网站的总体系统构架,并对各个子系统的主要功能进行了描述。     

我国个人金融业务中电子银行发展现状分析

电子银行的发展从最初的电话银行,到现在的网上银行、WAP银行和手机银行(短消息SMS),经历了一个不断成长、完善的过程。电子银行在我国发展较快,在个人金融业务中处于越来越重要的地位,也是各商业银行发展而构建共同性的战略性选择。文章试图从我国电子银行的发展状况、存在的问题,探索网络银行在现阶段的发展模式。     

林业企业信息化面临的问题及对策

面对信息化时代的到来,企业信息化成为企业生存和发展的关键,文章从目前我国林业企业的现状出发,分析了林业企业信息化中存在的主要问题,并提出了相应的对策。     

The effect of interfirm dependence structures on governance mechanisms

Despite recent developments regarding the study of interdependence structures, previous research has rarely investigated the simultaneous effect of both interdependence magnitude and interdependence asymmetry on governance mechanisms among exchange parties. A survey of manufacturing companies has been used to test a theory about the interactive effect of buyer dependence and supplier dependence on inter-firm governance. The analysis of the survey supported the proposition that both buyers and suppliers that are highly dependent on each other (high interdependence magnitude and low interdependence asymmetry) may choose to rely on monitoring and the norm of information sharing. However, when a buyer's dependence is low regardless of the supplier's dependence level, the buyer does not rely on the norm of information sharing (buyer's relative interdependence advantage, buyer's relative interdependence disadvantage, and low interdependence magnitude). On the other hand, when the supplier's dependence on the buyer is low, the buyer relies on monitoring regardless of its dependence level (buyer's relative interdependence disadvantage and low interdependence magnitude). However, this study did not empirically measure performance. Further research should be done on the effect of congruence between the governance mechanism and its antecedents on buying performance.     

金融业统一监管的成本与收益分析

近年来一些国家相继实行了金融业统一监管,业界对此存在着不同看法,一些人主张进行金融业的统一监管,即将所有的监管机构统一到一个组织结构进行统一监管,而另一些人则对此持反对意见,主张继续实行多边监管,即分业监管。文章试图从统一监管成本与收益的角度来分析金融业实行统一监管的可行性。