有限质量降落伞充气动力学数值模拟

为研究空投任务中降落伞有限质量充气过程的动力学行为,基于罚函数耦合方法和网格自适应技术分析了降落伞柔性结构与周围不可压缩流场的流固耦合特性。数值模拟开伞过程伞衣三维外形变化,获得降落伞系统下落速度、阻力面积等参数;对比分析初始投放速度对降落伞开伞时间、伞衣阻力面积的影响;通过试验数据对比分析开伞力变化。计算结果表明,该方法可以有效模拟降落伞系统有限质量充气过程的动力学特性,仿真结果与试验结果相符。     

攻击机靶场效能优化:概念、方法与基本问题

系统阐述了攻击机靶场攻击、靶场效能以及靶场效能优化等基本概念,在此基础上,分析了攻击机靶场效能优化的基本任务和基本问题,并给出了形式化描述。     

论中国维和警察培训与国际接轨的途径

中国维和警察培训要赶超世界先进水平 ,就必须高目标定位 ,高起点切入 ,高质量培训 ,高标准评估 ,高层次交流 ,努力探索中国维和警察培训与国际接轨的有效途径     

基于模糊综合评判的战场目标价值研究

现代战场目标繁多,从价值分析角度出发,建立了基于模糊综合评判的战场目标价值评估模型,并结合实例说明了该方法的具体应用,为指挥员和决策机关制定正确的策略提供了科学的依据.     

Currency Warfare and Just War: The Ethics of Targeting Currencies in War

ABSTRACT

Is Currency Warfare defined as, the use of monetary or military force directed against an enemy’s monetary power as part of a military campaign, a just way to fight a war? This article explores the ethics of waging currency warfare against the Just War Tradition’s principles of jus in bello (just conduct in war) and its criteria of discrimination and proportionality. The central argument is that currency warfare is inherently indiscriminate but may be proportionate when policy makers consider the nature of the threat confronted and the targeted currency's level of internationalization, that is, to what degree it is used in foreign transactions or used as a foreign currency reserve. I evaluate this argument against historical cases during the Second World War (1939–1945), the Gulf War (1990–1991), subsequent operations against Saddam Hussein in the early 1990s, and the ongoing campaign against ISIS.     

Building the Somali National Army: Anatomy of a failure, 2008–2018

ABSTRACT

Over a decade of security force assistance (SFA) initiatives to build an effective Somali National Army (SNA) failed because of the interrelated effects of political, contextual and operational challenges. The key political challenges were interest asymmetry between international actors and Somali elites, insufficient focus on institution-building and a lack of donor coordination. The principal contextual challenges in Somalia were the legacies of two decades of state collapse and the negative effects of clan dynamics. The main operational challenges were building an army while simultaneously fighting a war, the complexities of military integration, and the severe capability gaps afflicting the SNA.