高效因特网密钥交换协议(IKE)的研究与实现

IKE协议是因特网安全协议IPSec的重要组件,它的高效实现是IPSec的关键所在。在分析了IKE协议的基础上,给出了一种设计结构,并进行了性能评价和分析。基于实时嵌入式操作系统VxWorks环境的测试表明这是一种高效的实现方案。     

美军在信息安全视野下利用社交媒体政策研究

近年来,美军逐步调整社交媒体政策,重视发挥其在公共事务、家庭服务以及塑造军队形象中的独特功能。从信息安全的角度出发,在分析美军社交媒体政策发展变化及其内在动因的基础上,总结出美军运用社交媒体所采取的信息安全措施。     

中国警卫工作在社会视角中的误区

中国警卫工作始终披着神秘面纱，面纱遮盖住警卫工作诸多秘密，也造成社会视角中对中国警卫工作认知的扭曲；社会生活中群众对警卫工作的扭曲认识，严重影响了警卫部队建设和警卫工作的开展。分析社会对警卫工作产生扭曲认识的原因，对警卫概念、发展史、基本机构和作用等方面加以介绍，还中国警卫工作一个真实面目。     

国家安全视角下的网络文化安全形势与对策

互联网的发展加速了权力分散,对我国的国家安全尤其是文化安全维护提出了新的问题。当前,我国社会进入新时代发展阶段,社会主要矛盾发生重要变化。与互联网尤其是网络文化安全有关的风险和挑战不断增多,互联网已经成为文化安全斗争的主战场。如何直面挑战,着力维护网络文化安全,提出队伍建设、舆论阵地和平台建设、维护手段、思维和素养、机制和法规建设的对策方法。     

数据库安全管理及访问控制中问件的设计与实现

为确保军事敏感数据安全，在全面分析和研究数据库安全漏洞、安全策略、安全目标的基础上，提出了利用中间件技术实现客户访问数据库控制机制。针对两类操作系统的客户端，设计实现了通信控制中间件，使具有授权的用户通过中间层认证辨识后才能正确地访问数据库，确保了数据库信息安全。     

National security,military spending and the business cycle

This paper develops a Dynamic Stochastic General Equilibrium model where national security is an argument in the agent’s utility function and the government chooses optimally the level of military spending to maximize social welfare. National defense depends on military expenditure and on the strategic environment reflecting a potential hostile external threat. We use aggregate data on consumption, investment, and military spending for the US economy to estimate the parameters of the model. Estimation results suggest that consumption and national defense are complements and that military spending variability is mainly explained by external threat shocks although it also depends on the macroeconomic conditions. We compute impulse response functions of the main macroeconomic variables to several shocks: a total factor productivity shock, a defense technology shock, and a strategic environment shock. Surprisingly, we find that the optimal response to an increase in the external threat (a worsening in the strategic environment) will rise output by reducing consumption and increasing investment.     

多波束卫星网络的物理层安全性能指标研究

安全性是卫星通信网络充分发挥其优势的必要保证。将物理层安全传输技术引入多波束卫星通信网络,可望有效提高卫星通信系统的抗截获和抗侦测能力。分析了卫星通信的物理层安全应用需求,设计了一套波束成形和功率控制相结合的多波束卫星下行链路物理层安全传输策略,建立了信道模型和信号模型,构建了一套多波束卫星网络下行链路的物理层安全性能评价指标,并对指标进行了定性和定量的分析。     

基于灰色关联和D-S证据理论的导弹系统安全性评估

针对导弹系统安全性评价的不确定性问题,提出了将灰色关联和D-S证据理论相结合的方法,从人员安全性、设备安全性和环境安全性建立了综合评估指标体系,用灰色关联分析处理了指标之间的关联性。在传统证据合成公式的基础上,考虑证据集非关键因素的权重,给出了修正的证据合成公式。并以打靶选弹为例进行了计算分析,得出了导弹安全性优先级排序,并将改进算法与传统计算方法的结果进行了比较,验证了评价模型的可行性与实用性,为导弹系统的管理工作提供了有益的参考。     

A Good Ally - Norway and International Statebuilding in Afghanistan, 2001-2014

The article examines the findings of the Commission of Inquiry established by the Norwegian government in 2014 to evaluate all aspects of Norway’s civilian and military contribution to the international operation in Afghanistan from 2001 to 2014. Concerned with the wider implications of the Commission’s findings, it focuses on two issues in particular: (1) Norway’s relations with the US, a close and long-standing strategic ally whose resources, capabilities and dominance of decision-making dwarfed that of all other coalition partners in Afghanistan; and (2) Norway’s record in the province of Faryab, where, from 2005 to 2012, a Norwegian-led Provincial Reconstruction Team was charged with bringing security, good governance and development to the province. How Norway prioritised and managed relations with the US highlights and helps to problematise the challenges – political, practical and moral – facing small and medium-sized powers operating in a coalition alongside the US. Norwegian efforts in Faryab are revealing of the dilemmas and contradictions that plagued and, ultimately, fatally undermined the international intervention as a whole. As such, Norway’s experience provides a microcosm through which the inherent limitations of the attempt to transfer the structures of modern statehood and Western democracy to Afghanistan can be better understood.     

当代西方城市安全观念变迁

城市安全问题伴随着城市的产生而出现,近年来随着城市化进程在全球范围迅猛推进,城市安全问题显得尤为重要与紧迫。资本、人口向城市大量集聚,城市物质空间结构和城市社会结构巨变,城市整体建成环境及其依托的自然生态环境恶化趋势明显,城市安全脆弱度增大,当代城市安全面临新的挑战。西方发达国家对当代城市安全问题的新动向极为关注,对城市安全观念作了深入全面的拓展研究。从城市安全动态发展的视角,对相关文献进行梳理与总结,考察当代西方城市安全观念研究变迁态势,以期为我国城市安全问题的研究深化提供有益的借鉴和启示,推动我国城市化进程的健康和可持续发展。