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.     

邮政国际物流第三方物流管理系统设计与实施方案

本文介绍了大连邮政国际物流第三方物流管理系统设计与实现.介绍了系统需求、解决方案、系统架构规划、网络设计、数据库设计、主要功能框图等.     

基于集对分析法的地区大中型工业企业自主创新能力评价

为了对地区大中型工业企业自主创新能力进行全面、科学的评价,基于集对分析法,提出了地区大中型工业企业自主创新能力评价指标体系及综合评价模型。通过对我国30个省市区大中型工业企业的实证分析,表明该方法科学简便,具有很好的实用价值。     

网络环境下的水利信息服务

网络的充分发展,使信息资源出现了许多新的特点,为信息服务提供了一个新的服务环境,水利信息服务必须充分利用网络技术与网络信息资源,开展各种形式的水利信息服务。     

北京奥运物流技术需求分析

结合历届奥运会物流管理与运作特点及北京奥运会筹划及组织的要求,提出了奥运物流的内涵与分类、服务管理及运作模式。通过研究北京奥运会物流应达到的目标及现代物流技术在北京奥运物流中的作用,对北京奥运物流及相关技术的需求程度进行了有益的探索,并提出了完成奥运物流的基本对策。     

基于无线技术的仓储拣选作业流程再造方案分析

对传统的仓储拣选作业流程进行了研究分析,提出了基于无线技术的仓储拣选作业流程再造方案,并对两者进行了对比分析,阐述了再造后的拣选作业流程采用无线技术及其相关技术后的诸多优点及发展前景.     

合肥市现代物流业发展的SWOT分析

运用SWOT分析方法综合分析了当前环境下合肥市发展现代物流业所具有的优势、劣势、机遇和挑战.     

Implications of variant efficiency measures for policy evaluations in UK higher education

Policy goals in UK higher education encourage the publicly funded universities to become more-specialised and larger in size without compromising output quality. Efficiency gains are expected to flow from this increased specialisation in accordance with universities’ comparative research and teaching strengths. Mergers to reap further gains from economies of scale are also being actively encouraged. Given this scenario, the paper investigates whether best-practice efficiency measurement based on data envelopment analysis (DEA) provides empirical support for the current policy goals. It also assesses whether such support is dependent on the specific type of efficiency measure used in the DEA modelling. This assessment finds that a selection of (nine) commonly used, variant efficiency measures generally support the current policy goals. The paper also uses the principal-agent framework to explore the issues involved in using computed DEA-based efficiency scores for policy evaluations and possible funding guidance in UK higher education. This highlights empirically how policy-makers and universities can have very different preferences about which efficiency measure is to be used for policy evaluations and possible funding guidance.     

公司道德与会计职业责任

道德依存的基础是人在经济活动过程中形成的经济利益关系。约束这种关系的规范依个体存在方式的不同而有不同的道德规范。一是作为独立个体人应当遵循的社会公德,二是作为某个组织成员,代表组织应遵循的道德规范。它们分别应当是家庭美德、公司道德和职业道德。目前社会主义市场经济建设中的道德建设应当重视和加强公司道德建设。会计职业道德建设的缺陷是过分强调职业道德在整个道德体系中的作用而忽视了公司道德建设。     

共同分析师网络与企业异地投资

基于社会网络视角,以2010—2020年中国A股非金融类上市公司为样本,探讨共同分析师网络对于企业异地投资的影响机理及其经济后果。研究发现：共同分析师网络依靠网络中的社会资本及信息传递效应促进企业异地投资,并且这种促进作用在民营企业和第三产业企业中表现得更为明显;经济后果表明,共同分析师网络作用下的异地投资会促进企业创新并提升企业价值,有利于企业健康发展。