物流配送系统中的运筹学问题及方法研究

物流配送系统中包含诸多运筹学问题,如配送中心选址中的0-1规划问题,货物配载中的背包问题,配送路线优化中的动态规划问题等,通过建立数学模型,利用运筹学方法与信息技术的结合可对上述问题加以解决,为配送业务的进一步发展提供帮助.     

Characterizations of negative multinomial distributions based on conditional distributions

In this paper characterizations of negative multinomial distributions based on conditional distributions have been studied.     

基于GIS的配送车辆调度系统的设计与实现

本文分析了物流配送与GIS的特点和功能，简要介绍了我们所设计开发的基于CIS的配送车辆调度系统。     

发展我国零售业态下的共同配送模式——日本7-11便利店物流革新的启示

日本7-11便利店在物流革新中开创了共同配送的新型配送模式,提高了配送效率,并成为其取得成功的关键因素之一.现阶段有三种典型的共同配送模式：集中配送模式、窗口批发模式、完全统一配送模式.鉴于我国零售业物流配送存在物流成本高、社会成本高、运输的规模不经济等问题,需要大力发展共同配送模式,以提高我国零售业物流配送效率.在我国零售业态下具体实行何种共同配送模式,可依据选择共同配送模式的决策参考模型,并结合具体情况做出决定.     

进入权理论下的会计师事务所股权设置

Rajan和Zingales提出了进入权理论，认为企业的权力来源于进入权，即对关键资源接触和使用的权力。本文结合会计师事务所的特征，在分析其关键资源的基础上，建议会计师事务所的股权应设置为财产股、岗位股、贡献股。     

A General Method of Deriving the Inefficiencies of Banks from a Profit Function

This article develops a new method of estimating inefficiencies in joint production and shows that unlike the approaches utilized in the previous studies of inefficiency, this method maintains a consistent relationship between the error term of a profit function and the error terms of its price derivatives. A useful by-product of the method is a proof of a Hotelling-like lemma that relates stochastic input demand and output supply functions to stochastic profit functions. While the previous studies fit a single frontier to data on all firms, this paper estimates a frontier unique to every observed firm to allow each one to have a different potential of achieving maximal levels of profit. The new method is applied in the analysis of annual data, 1984–1989, for U.S. commercial banks. Both the analytical and numerical results of the paper show that the residual that the previous studies attribute to inefficiency includes the effects of excluded variables and of inaccuracies in the specified functional forms. Once accurate estimates of these effects are subtracted from the residual, the distortions in the measured inefficiencies should be considerably reduced. Consequently, this article considers how such estimates might be obtained.     

区域性物流园区布局方案优选的博弈研究

本文基于区域物流理论与博弈论的理论基础，建立了相应的区域性物流园区布局方案的优选博弈模型，并列出了可行的计算步骤，做出了方法评价，指出了该方法后续研究的方向，为物流园区区域性总体布局的优选问题提供了一种解决方法。     

VE在油田开发中的应用

孤岛采油厂历经30多年的开发,已处于特高含水期产量递减阶段。由于新井产量受到自然资源和投资的限制是有限的,要减缓原油产量的递减,依靠的是大量增产措施的投入,而每项措施的实施需要耗费几万元到几十万元的费用。所以,引起开发后期油田成本上升的主要原因是油田增产措施难度加大,投入相应增加。为此,我们引入VE原理,科学实施增产措施工作量,达到了降低作业成本,提高增油效果的目的。     

直接转运对供应链的影响和要求

随着供应链管理概念在企业的发展与应用．传统的配送战略在进一步降低物流成本和满足顾客需求上都受到了一定的挑战。本文从直接转运（cross-docking）的涵义和运作特征出发，分析直接转运对供应链中生产商、分销商或配送中心和零售商的影响，并总结直接转运给供应链带来的总体利益，提出供应链主要参与者在实施直接转运方式时，应该从配送中心布局、执行与控制、仓库管理系统、供应链信息沟通和供应链伙伴关系等方面来考虑，从而使直接转运的利益最大化，进一步促进供应链的整合。     

On the Use of Value Efficiency Analysis and Some Further Developments

The purpose of this paper is to discuss the use of Value Efficiency Analysis (VEA) in efficiency evaluation when preference information is taken into account. Value efficiency analysis is an approach, which applies the ideas developed for Multiple Objective Linear Programming (MOLP) to Data Envelopment Analysis (DEA). Preference information is given through the desirable structure of input- and output-values. The same values can be used for all units under evaluation or the values can be specific for each unit. A decision-maker can specify the input- and output-values subjectively without any support or (s)he can use a multiple criteria support system to assist him/her to find those values on the efficient frontier. The underlying assumption is that the most preferred values maximize the decision-maker's implicitly known value function in a production possibility set or a subset. The purpose of value efficiency analysis is to estimate a need to increase outputs and/or decrease inputs for reaching the indifference contour of the value function at the optimum. In this paper, we briefly review the main ideas in value efficiency analysis and discuss practical aspects related to the use of value efficiency analysis. We also consider some extensions.