Cost allocation of capacity investment games

Consider a manufacturer serving a set of retail stores each of which faces deterministic demands in a finite planning horizon. At the beginning of the planning horizon, the production capacity of the manufacturer is built, followed by production, outsourcing to third party manufacturers if necessary and distribution to the retail stores. Because the retail stores are usually managed by different managers who act as independent profit centers, it is desirable that the total cost is divided among the retail stores so that their incentives can be appropriately captured and thus efficient operations can be achieved. Under various conditions, we prove that there is a fair allocation of costs among the retail stores in the sense that no subset of retail stores subsidizes others, or equivalently, the resulting capacity investment game has a nonempty core, that is, the capacity investment game is a balanced game. In addition, our proof provides a mechanism to compute a fair cost allocation. © 2013 Wiley Periodicals, Inc. Naval Research Logistics 60: 512–523, 2013     

一种基于节点资源利用率的无标度网络路由策略

本文研究了节点负载处理能力异质条件下的无标度网络交通动力学过程,提出了一种基于节点资源利用率的全局动态路由策略。该策略利用网络中节点资源利用率构建了一种全局代价函数,选择使该代价函数最小的路径来传输负载。实验结果表明该路由策略在略微增加平均路径长度的情况下成倍地提高了网络负载传输能力,与有效路由策略的比较进一步验证了该策略的有效性。     

小型电动垂直起降飞行器推进系统性能分析

小型电动垂直起降飞行器的悬停续航性能取决于推进系统的性能。基于电池、电机、电调的质量模型和螺旋桨的推力-功耗关系,利用电池的恒流放电模型建立了垂直起降飞行器的续航时间评估模型,分析了推进系统参数和有效载荷对飞行器续航性能的影响规律,研究结论可用于电动垂直起降飞行器的总体设计和推进系统选型。     

ANALYSING DEFENCE DEPENDENCY: THE IMPACT OF THE ROYAL NAVY ON A SUB‐REGIONAL ECONOMY

This paper provides a methodology for estimating the economic impact of defence spending at a sub‐regional level. It does so by calculating the income and employment generated by Britain’s Royal Navy and associated defence activities in the City of Portsmouth and its surrounding area, during the financial year 2003–2004. In an era of military consolidation, the paper offers an insight into the multifaceted impact of defence‐related expenditure. Hence, it presents a generic framework that could prove useful to other researchers when seeking to measure the sub‐regional impact of naval, airforce and army facilities in other national contexts.     

SWAZILAND

The election of Sheik Sharif Sheik Ahmed as the transitional president of Somalia was the climax of the United Nations (UN)-led Djibouti peace process. The election, it was hoped, would herald the beginning of the reconstitution of the Somalian state. Unfortunately, nearly three years after the event, that has still not happened. The government of Sheik Sharif has faced a number of challenges which are yet to be resolved. In the end, the Djibouti peace process has not guaranteed a stable and functional national government in Somalia.     

How should the peace and security performance of SADC be evaluated?

This article responds to the reviews by Gwinyayi Dzinesa and Elling Tjønneland of Community of insecurity: SADC's struggle for peace and security in southern Africa. It does this by exploring the methodological and analytical challenges in evaluating SADC's peace and security endeavours. It emphasises the need to present explicitly the criteria for assessment, to concentrate on the actual performance of the organisation rather than on its declarations and structures, and to make assessments and predictions on the basis of historical trends and sound analysis.     

THE MIDDLE EAST WMD-FREE ZONE CONFERENCE

This article reviews the origins and evolution of the Middle East weapons of mass destruction-free zone (WMDFZ) concept and the proposal for a 2012 conference on the subject, and explores new challenges and opportunities for regional arms control in the current regional environment. It suggests that new models may be necessary to revitalize regional arms control efforts. The establishment of a broad regional security forum could include, but should not be limited to, curtailing weapons of mass destruction through the zone approach. Even if the 2012 conference fails to materialize, or is limited to a one-time event, the proposal for such a conference has provided an important opportunity to rethink future options for a regional arms control and security process.     

刍议以消防维护保养专业力量促进控制室值班人员能力提升

分析了消防控制室值班人员岗位能力不足的主要原因,结合《火灾自动报警系统设计规范》和《社会消防技术服务管理规定》的相关规定,提出了充分发挥消防维护保养机构作为第三方社会力量的专业队作用,利用市场化方法和经济杠杆,通过加强操作能力培训、建立健全职责制度、强化责任落实和严格监督执法等措施,进一步加强对消防控制室值班人员的实际操作培训,有效提升消防控制室值班人员的岗位能力。     

多彩光谱教育理论与音乐、绘画融通的教学实践

音乐与绘画的融通问题长期以来一直缺乏充分、深入的研究,在教育领域也是如此。本文援引多个教学案例,借鉴多彩光谱教育理论,从教学目标、教学设计、教学步骤、实施方法诸方面来阐释和解决音乐与绘画的融通在教学实践中出现的问题。     

基于LVQ网络的高校科研能力评估

作为高校核心能力的科研能力,其高低已成为衡量一所高校综合实力的重要指标。如何准确高效的评价高校科研能力成为政府、企业和高校面临的一个十分重要的问题。影响高校科研能力的因素众多,本文选取11个典型指标,建立了基于LVQ的高校科研能力评估模型及算法。首先,介绍了LVQ网络;其次,建立了一种新的基于LVQ的高校科研能力评估模型及算法;最后,利用MATLAB R2009a编程实现了LVQ高校科研能力评估模型及算法。选取25所高校的科研能力数据用于仿真实验,其中20所高校数据作为训练集,其它5所作为测试集,该算法分类正确率为80%,达到了预期目标。仿真结果表明,该模型提高了高校科研能力评价的准确率,评价结果更加客观、公正,对高校科研能力评价具有一定的参考意义。