企业技术创新与研究开发探讨

在社会主义市场经济环境中，企业的技术创新和技术研发被提升到一个从未有过的高度，这两个词汇也频频被知识经济下的各种传媒所引用。作者认为，如果对二者没有一个清晰的概念，忽略了它们本质上的差异，那么对“科学技术是第一生产力”就不会有深刻的理解，也无法说清技术对经济的影响，思想的混乱将会导致企业决策和行动的失误。本文结合企业的实际情况，就技术研发与技术创新的表现以及对企业发展的作用和影响，进行分析和探讨。     

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     

基于遗传算法的军用集装箱装载优化

以军用集装箱装载为研究对象，在考虑实际应用中的一些约束条件下，构造了军用物资的装载优化模型，提出了一种军用集装箱三维装载的遗传算法。该算法考虑了货物放置方向、装载客积、装载质量及装载重心等约束条件。最后对一个案例进行了计算，验证了该模型的有效性，并且利用3ds max得到了装载方案的三维图。     

数据挖掘在信用风险管理中的应用

本文详细分析了在现代信用风险管理中不同方法对数据质量的要求,并在此基础上提出采用数据挖掘方法改进数据质量、提高计算精度的建议,供我国金融机构信用风险管理之借鉴。     

绿色供应链的运作模型研究

在供应链运作参考模型(SCOR模型)基础上提出绿色供应链的运作模型,并将其划分为绿色供应链的采购环节、绿色供应链的制造环节、绿色供应链的支付环节和绿色供应链的回收环节分别研究。提出了一个完整的绿色供应链的运作模型。     

机电设备招标中的综合评议法

根据国家有关法规对招标评标方法的原则要求,结合实际工作的经验,说明和分析了几种常见的评标方法及其适用范围,同时提出一种定量定性综合衡量的评标方法,即综合评议法。     

高校网上招生系统的后续开发与研究

针对目前院校端网上招生录取系统存在的局限性,文章详细介绍了高校网上招生后续开发管理系统的功能,讨论了系统实现中的关键技术及实现方法,指出该系统采用分布式计算技术,建立基于组件的3层C/S模型的体系结构,具有高效性、可伸缩性、开发周期短、安全性高的特点。