On exact D-optimal designs with 2 two-level factors and n autocorrelated observations

In this paper we consider the exact D-optimal designs for estimation of the unknown parameters in the two factors, each at only two-level, main effects model with autocorrelated errors. The vector of the n random errors in the observed responses is assumed to follow a first-order autoregressive model (AR(1)). The exact D-optimal designs seek the optimal combinations of the design levels as well as the optimal run orders, so that the determinant of the information matrix of BLUEs for the unknown parameters is maximized. Bora-Senta and Moyssiadis (1999) gave some conjectures about the exact D-optimal designs based on their experience of several exhaustive searches. In this paper their conjectures are partially proved to be true.Received: January 2003 / Accepted: October 2003Partially supported by the National Science Council of Taiwan, R.O.C. under grant NSC 91-2115-M-008-013.Supported in part by the National Science Council of Taiwan, R.O.C. under grant NSC 89-2118-M-110-003.     

面向电子商务的现代物流管理信息系统的开发

结合现代物流技术发展趋势，分析探讨了面向电子商务的现代物流管理信息系统的开发技术路线，关键技术内容，功能体系结构设计及分层逻辑模型设计。     

体制变革背景下的服务业增长：一个定量分析框架

1978-2006年，中国服务业的高速增长与经济体制变革存在着直接的关系。体制变革是过去20多年中服务业增长的一个最重要因素。体制变革一方面通过放松管制提高了服务业占GDP的比重，另一方面，体制变革通过民营化进程降低了服务业的内部产业X-无效率，提高了服务业的金要素生产率。     

OWNERSHIP STRUCTURE AND FIRM EXIT ROUTES

ABSTRACT

Our study presents empirical evidence about the role of ownership structure for firm exit probability by explicitly differentiating between distinct exit routes (bankruptcy and forced liquidation, voluntary liquidation, mergers and acquisitions – M&A, and removal from the court register). Based on the population of Slovenian firms in the 2006–2012 period and using multinomial probit, our findings support the predictions of agency theory. Ownership concentration, share of the largest owner, and the difference in shares between two largest owners all decrease the likelihood of exit for all studied exit routes but M&A. The magnitude of their impact is largest for exits, in which owners play a decisive role, i.e. voluntary liquidation and removal. The link between the number of primary owners and exit likelihood is U-shaped with the lowest exit probability for firms with around two owners.     

论"后过渡期"我国境外消费教育服务贸易

当前国际境外消费教育（留学生教育）服务贸易发展迅速，但也呈现出极端的不平衡，国际留学生市场基本上由发达国家垄断。在我国进入“入世后过渡期”阶段，借鉴发达国家经验大力发展境外消费教育服务贸易时应注意：加强质量和特色建设，积极解决留学生费用，针对外国留学生特点进行教学和组织科研，加强教育服务贸易相关问题研究等。     

社会审计委托代理分析

本文分析了社会审计契约中委托代理关系及审计信息不对称表现及形成原因,通过建立社会审计的委托代理模型,揭示了在审计人和委托人均完全理性的假设下,委托人可以通过激励机制鼓励审计人尽最大努力完成工作。在此基础上分析了我国社会审计收费制度的不合理性、转轨经济环境下社会审计合约具有的不完全契约特性,并提出了改革的设想。     

基于作业成本法的高校教学成本计算模式构建研究

本文在论述作业成本法应用于高校教学成本计算的可行性基础上,针对高校教学管理各环节及费用发生的一般特点,分析了作业成本动因与选择,构建了基于作业成本法的高校教学成本计算模式,以其为推动高校教育成本核算体制的建立和财务成本管理水平的提高提供借鉴与参考。     

软件限时开发方法的研究与应用

限时开发是快速应用开发的最佳实践之一。文章介绍了限时开发的基本概念和优点以及适用的项目范围,通过一个进销存软件的开发实例说明如何成功地应用限时开发方法。     

EPC技术在服装行业的应用研究

随着无限射频技术（RFID）在物体标识方面应用的成熟,人们提出了一个基于互联网的全球物联网,即EPC网络,旨在对每一件出厂的产品做到唯一识别,以便跟踪它的整个生命周期.本文分析了服装行业供应链的特点和信息化的需求,在此基础上研究了EPC在服装行业的应用,并对其未来的发展进行了展望.     

节约型社会解读与广义全面价值管理

本文根据节约型社会的基本内涵与经济学解读,对价值涵义及其源泉进行再认识,提出广义全面价值管理方法论。