电子商务环境下我国第三方物流企业运作模式分析

在当今电子商务高速发展的环境下，第三方物流出现信息化、自动化、联盟化、网络化、个性化和柔性化的趋势。而建立一种与之相适应的新型第三方物流模式成了中国物流企业需要解决的问题。论文分析了电子商务对第三方物流的影响及我国第三方物流发展现状，探讨性提出了电子商务环境下我国第三方物流运作的基本模式及操作建议。     

我国港口经济发展的战略选择

从港口相关概念和发展历程开始，阐述了我国商贸港口发展面临的国际产业转移的重大机遇，以及如何及时抓住机遇，继续扩大区位优势，争取更多政策支持，培育产业集聚形态，促进港口经济繁荣，增强港口城市经济活力。     

网络时代中间商发展趋势及特点浅谈

阐述了中间商、新中间商的概念,归纳、分析了中间商在网络时代下存在的必要性、可能性及其发展的新特点和可能趋势。     

LDSS的研究

通过分析决策支持系统的特点及作用,针对物流系统提出了物流决策支持系统结构模型,并对其功能及实现进行了探讨和研究。     

物流管理信息系统数据库设计的研究

本文在物流管理信息系统设计与开发的基础上，论速了在物流管理信息系统建设中数据库设计的重要性及其设计过程，并对于数据库设计中重要数据的安全性和完整性机制作了说明。     

A sequential model for cracking down on street markets for illicit drugs

This paper develops a sequential decision-making model for assisting law enforcement officials in allocating resources during a crackdown operation on illicit drug markets. The sequential crackdown model (SCM) considers a probabilistic framework, where the probability of incarceration of a dealer and the probability of dealing are modeled as a function of the size of a drug market, crackdown enforcement level, drug dealer's financial hardship, and other market characteristics.The model was developed and tested in consultation with enforcement officials from Philadelphia, PA and Camden, NJ. We present a detailed, step-by-step implementation scheme for updating parameters on each day of the crackdown. Parameter estimation along with examples of model usage is provided. Through these examples, we illustrate how the SCM could be helpful in understanding the response of illicit drug markets to various enforcement strategies. We further show conditions under which an alternating crackdown policy (referred to as a crackdown-backoff) or a consistent use of maximum possible enforcement would be optimal strategies for managing a drug crackdown operation. Within the context of the model and parameter estimates, we show that a much quicker and less costly collapse could be implemented if the available enforcement resources are increased. Finally, the model provides possible conditions under which a crackdown operation would be unsuccessful in eliminating a drug market.     

一种产品生产规划模型

在对供应链中运输、库存、产品生产计划分析的 基础上,提出了一种解决厂家产品生产规划的混合整数规划 模型。     

长期筹资科学化的初步探索--构建最佳资本结构模型

助计算机用定量方法快速有效的解决长期筹资决策问题是知识经济时代对企业的必然要求。最佳资本结构模型用计算机运筹学的方法来决策不同筹资方式的最优筹资额，以帮助企业实现长期筹资目标同时也是财务管理最终目标——企业价值最大化。     

A note on the determination of A-optimal type block designs under fixed and mixed effects models

In this paper, we consider the problem of estimating a selected set of contrasts between v treatments using a block design consisting of b blocks of size k. Traditionally, the construction of A-optimal block designs for such situations has been carried out assuming a fixed effects model. In this paper, we show that A-optimal designs constructed under a fixed effects model are robust in the sense that these designs have maximal minimal efficiency when considered among all available designs and under all possible mixed effects models. AMS 1991 subject classifications: Primary 62K05; Secondary 62K10     

虚拟经营——21世纪的制胜之道

文章对虚拟经营进行了详细的说明,介绍了虚拟经营的5种形式,论述了转向虚拟经营的可行性,同时提出了虚拟经营已经成为一种新型的企业运转和管理的模式。随着计算机技术的不断发展,虚拟经营将在现代社会中演绎更重要的角色。