基于BGP／MPLSIPVPN的综合业务通信专网规划与路由器配置

以某公司组建综合业务通信专网的业务需求为背景,阐述了网络拓扑结构设计、路由策略规划以及具体的设备配置过程。其中,CE以静态路由方式接入PE,VPN跨域采用OptionA方式,并在域间配置双向转发检测和多归路识别属性。     

消防人员的心理素质及训练

本文通过对消防人员在灭火战斗活动中的心理状态的分析,明确了消防人员心理素质训练的重要意义,结合实践经验介绍了消防人员心理素质训练的组织和方法,旨在加强消防人员在灭火战斗中的心理承受能力,以取得火灾扑救任务的圆满完成。     

警卫人员处置突发事件的应激心理及调控训练

警卫任务的特点决定了警卫人员始终处于高度的应激状态下,相同的刺激引起的心理应激是不同的,既可引起焦虑恐惧、精神抑郁、疲倦乏力等消极的反应,也可激发出斗志昂扬、精力充沛、勇敢果断等积极的反应。这主要取决于心理承受能力的强弱。研究应激心理对警卫人员处置突发事件中的影响,对有针对性地开展心理调控和组织处突训练,提高警卫人员心理素质,使其做到临危不惧、处变不惊,从而有效处置各类突发事件,确保警卫对象在任何条件下的安全,具有十分重要的现实意义。     

警卫工作经验对警卫人员素质的影响

经验是构成警卫人员业务素质的主要内容.其中直接经验可以大幅提升警卫人员的能力,而间接经验则是警卫人员素质生成的主要渠道.因此,必须充分认识两种经验在警卫人员素质生成中的作用,既要注重直接经验的获取,更要重视间接经验的不可替代性.     

Newsvendor bounds and heuristics for serial supply chains with regular and expedited shipping

We study an infinite‐horizon, N‐stage, serial production/inventory system with two transportation modes between stages: regular shipping and expedited shipping. The optimal inventory policy for this system is a top–down echelon base‐stock policy, which can be computed through minimizing 2N nested convex functions recursively (Lawson and Porteus, Oper Res 48 (2000), 878–893). In this article, we first present some structural properties and comparative statics for the parameters of the optimal inventory policies, we then derive simple, newsvendor‐type lower and upper bounds for the optimal control parameters. These results are used to develop near optimal heuristic solutions for the echelon base‐stock policies. Numerical studies show that the heuristic performs well. © 2009 Wiley Periodicals, Inc. Naval Research Logistics, 2010     

Fencing the bear? Explaining US foreign policy towards Russian interventions

Despite the burgeoning literature on Russia’s renewed power politics, little attention has been paid to the fact that US reactions towards Russia’s military interventions were all but coherent. The USA has chosen weak measures in Georgia in 2008 (shaming) compared to its assertive response in Ukraine in 2014 (sanctions, hard deterrence). This article assesses the explanatory power of neorealist, liberal and constructivist theories for the variation in US reactions towards Russian interventions in Georgia and Ukraine. Our argument is that the constructivist perspective explains the cases best as it highlights the power and communality of normative assessments. The Ukraine crisis was perceived by the USA as a violation of core international norms, especially the non-use of force and the principle of territorial integrity. Relevant international norm carriers shared this assessment of the conflict. In contrast, the perception of the Georgian war centred on the issue of democracy promotion. While democracy is an important aim of US foreign policy, it does not summon the same normative importance as general principles of international law. Furthermore, the perception of the Georgian war remained contested among Western allies, which decreased the communality of the normative assessment.     

Securitising humanitarian assistance and post-conflict reconstruction in Africa: A critical review of South Africa's new defence policy

The South African Defence Review 2014 is the country's new defence policy. The Review, which is expected to steer South African defence policymaking for the next few decades, discusses in detail the role of the South African National Defence Force (SANDF) in peace missions in Africa and proposes the direct involvement of the country's soldiers in both military and civilian tasks, from peacekeeping to humanitarian assistance, post-conflict reconstruction and development. This paper contains a critical review of the Review with regard to South Africa's envisaged contribution to regional and continental peace and stability. It is argued that humanitarian assistance and post-conflict reconstruction should not be securitised and that the SANDF should only be tasked with peacekeeping and the establishment of stability and security in fragile in-conflict and post-conflict settings. The humanitarian work should be left to humanitarian and aid agencies, while reconstruction and development should be left to organisations such as the New Partnership for Africa's Development, continental and international development organisations, and local actors.     

Capacity investment decisions under risk aversion

This article studies the optimal capacity investment problem for a risk‐averse decision maker. The capacity can be either purchased or salvaged, whereas both involve a fixed cost and a proportional cost/revenue. We incorporate risk preference and use a consumption model to capture the decision maker's risk sensitivity in a multiperiod capacity investment model. We show that, in each period, capacity and consumption decisions can be separately determined. In addition, we characterize the structure of the optimal capacity strategy. When the parameters are stationary, we present certain conditions under which the optimal capacity strategy could be easily characterized by a static two‐sided (s, S) policy, whereby, the capacity is determined only at the beginning of period one, and held constant during the entire planning horizon. It is purchased up to B when the initial capacity is below b, salvaged down to Σ when it is above σ, and remains constant otherwise. Numerical tests are presented to investigate the impact of demand volatility on the optimal capacity strategy. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 218–235, 2016     

位置信息与替换概率相结合的多核共享Cache管理机制

多核系统中末级Cache是影响整体性能的关键。为了提出一种细粒度、低延迟、低代价的末级共享Cache资源管理机制,将系统性能目标转换为每个内核当前占用Cache资源的替换概率,以决定每个内核能够提供的被替换资源的数量;对某个需要增加Cache资源的内核,从可提供被替换资源的候选内核中选出距离较近且替换概率较高的一个内核,并以Cache块为粒度进行替换,从而实现Cache资源在不同内核间的动态划分。与传统以相联度为粒度的粗粒度替换机制相比,以Cache块为单位的替换机制具有更细的替换粒度,灵活性更高。另外,通过将位置信息和替换概率结合,保证了Cache资源与相应内核在物理布局上的收敛,降低了访问延迟。同时,所提出的方法只需要增加极少的硬件代价。实验结果表明,根据实验场景和对比对象的不同,所提方法与其他已有研究成果相比,可以实现从6.8%到22.7%的性能提升。     

军人犯罪刑事政策探究

刑事政策是大刑事法思想的基本范畴 ,军人犯罪刑事政策是国家基本刑事政策在军队的具体沿用。军人犯罪刑事政策是由军委就一定时期军队犯罪情况制订的原则性指导意见 ,它不直接对某一犯罪人作出评判 ,而是作为军事立法机关和司法机关形成最终法律判断的动态标准。