Collecting Oriental and Asiatic Arms and Armour: The Activities of British and East India Company Officers,c.1800-1850

During the first half of the 19th century substantial quantities of Oriental and Asiatic arms and armour first began to appear in Britain. On the one hand they certainly reflected the expansion of empire but their wider significance has yet to be discussed. This article seeks to address that omission by exploring the growth of interest in these objects within military circles, what they represented to the individuals who acquired them, and how they fitted into the wider collecting strategies of military officers as a group.     

加入WTO对图书馆信息服务的影响及对策

中国入世后,对图书馆信息服务产生新的影响,对此图书馆业应转变观念,加强对文献信息的组织与管理,建立完整的网络信息服务体系,提供全方位服务,增强继续教育力度以更好的服务于社会.     

对办好高等院校研究生课程进修教育的思考

近年来,高校纷纷举办各种形式多样的在职研究生课程进修班,针对这一新生的、过热的教育形式,本文从其定位和目前存在问题等方面进行系统分析,并提出了进一步办好研究生课程进修班的措施.     

面向基本对象模型BOM和Web服务的建模技术研究

介绍了BOM模型和面向Web服务技术,从概念、表示以及语义层次上对2种技术进行了对比分析。基于二者数据类型和语义的一致性,提出了从BOM模型到Web服务描述的映射规则,阐述了这种映射的实际操作步骤,最后通过实例验证了该方法的可行性和有效性,并分析和总结了运用BOM和Web服务建模的优越性。     

基于熵权的岸基油料保障设施设备效能评估

岸基油料保障是舰艇油料保障的重要方式,岸基油料保障设施设备效能直接影响舰艇油料保障效率。通过对影响岸基油料保障设施设备效能因素的分析,从储油设施设备、输油设施设备、油料装卸加注设施设备3个方面建立了评价指标体系。针对评价中指标权重确定时主观性较强的缺点,引入信息熵的概念进行评价指标权重的计算,建立了基于熵权的岸基油料保障设施设备效能评估模型。通过对3个基地岸基油料保障设施设备效能的实例分析,验证了模型,为舰艇岸基油料保障提供了决策依据。     

A two‐echelon inventory‐location problem with service considerations

We study the problem of designing a two‐echelon spare parts inventory system consisting of a central plant and a number of service centers each serving a set of customers with stochastic demand. Processing and storage capacities at both levels of facilities are limited. The manufacturing process is modeled as a queuing system at the plant. The goal is to optimize the base‐stock levels at both echelons, the location of service centers, and the allocation of customers to centers simultaneously, subject to service constraints. A mixed integer nonlinear programming model (MINLP) is formulated to minimize the total expected cost of the system. The problem is NP‐hard and a Lagrangian heuristic is proposed. We present computational results and discuss the trade‐off between cost and service. © 2009 Wiley Periodicals, Inc. Naval Research Logistics 2009     

基于迭代Bargaining策略优化服务合成执行路径

服务质量(QoS)是优化服务合成执行路径的关键研究内容,当前绝大多数存在的方法很少注意到商业环境下服务商之间存在的隐性竞争压力可能会迫使服务商动态改变他们的QoS值以至于合成优化执行路径发生改变.针对此问题,提出一个基于迭代Bargaining策略的约束违背纠正方法.该方法使用本地最优化策略,在没有考虑用户QoS约束的情况下建立一条最优执行路径.对此路径,全局QoS计算模型和全局约束违背检查模型能找出所有发生的约束违背.一个迭代的Bargaining策略被递归作用于关键路径执行节点,使得更好服务提供商被选出替换原有执行节点,从而一个优化的执行路径能被重新建立以满足用户综合的QoS约束需求.     

Technical note: Traffic intensity estimation

This note examines estimation of the traffic intensity in an M/G/1 queue. We show that the ratio of sample mean service times to the sample mean interarrival times has undesirable sampling properties. To remedy this, two alternative estimators are introduced. © 2009 Wiley Periodicals, Inc. Naval Research Logistics 2009     

边防毗邻省区跨域协同警务战略研究

在非传统安全威胁不断增多的情况下,公安边防部队维护边疆社会治安和政治大局稳定的职能作用更加凸现。针对公安边防部队点多、线长、面广的特点和毗邻省区结合部管理防范相对薄弱的实际,研究探索新形势下加强毗邻跨域警务协同、联手固边的工作机制,形成无缝链接——“全国边防一盘棋”的整体战略,全面提升公安边防部队战斗力,具有极其重要的现实意义。     

大空间建筑火灾扑救及现场保障问题探析

通过对大空间建筑物火灾特点的分析与归纳总结,就此类火灾的灭火救援问题,阐述了如何正确处理救人与灭火关系、充分发挥建筑内部消防设施的作用,提出全面研判火场形势,选准突破口,有效破拆、攻放结合的战术方法。同时针对大空间建筑物灭火救援现场特点,提出几项必要的保障措施。