基于Entropy-Topsis的水面舰艇编队防空配置方案优选研究

合理配置编队防空舰艇是提高编队对空防御作战效能的一项重要手段。以两型四舰六扇面的典型配置方案优选为研究对象,建立了配置方案评价指标体系及相应数学模型,构建了编队防空舰艇配置方案优选问题的决策矩阵,应用Entropy?Topsis模型进行优选,对各方案进行排名,并得到了相应最优解和最劣解。     

海军要地防空作战指挥中飞机有效部署区域研究

在遂行海军要地防空任务时,飞机部署区域选择对防空作战有至关重要的影响。通过对防空作战指挥中飞机防空作战指挥流程分析研究,采用战术计算方法得出了防空作战中飞机有效部署区域应满足的必要条件,根据必要条件构建了线性规划模型,并通过图解法求得有效部署区域。最后对研究成果应用领域进行了分析。     

How not to pay for the war

As a result of allied subsidy and the influence of sunk costs, the marginal cost of the Gulf War to the US was reduced to negligible size. This result is at variance with the Olson‐Zeckhauser thesis that in an alliance “the small exploit the large.” A game theoretic alternative explanation suggests that the relation between allies resembles the game of Chicken, successfully played by the US. The ability to shift the marginal costs of war in the short term raises questions about the possible underestimation of long term effects.     

The impact of defense and non‐defense public spending on growth in Asia and Latin America∗

For a three‐sector Feder‐Ram framework, we present time‐series, cross‐sectional estimates for two cohorts, consisting of Asian and Latin American countries. The estimates indicate that private investment, and defense and non‐defense public spending are growth promoting for alternative error components representations. For the best error components representation, greater growth enhancement is associated with the two forms of public spending in Asia than in Latin America, while the opposite comparison characterizes private investment. Although defense is growth promoting, an opportunity cost exists insofar as non‐defense spending, financed by defense spending, appears to give a small net boost to growth in Latin America.     

Undergraduate disarmament and nonproliferation education: gaps,opportunities, and new approaches

ABSTRACT

Despite living in a nuclear-weapon state, young Americans are generally ill-informed about weapons of mass destruction (WMD) and their means of control. The result is both widespread apathy toward nonproliferation and disarmament decision making among the general public and a looming personnel crisis within government sectors that enact policy in these domains. Considering that 67 percent of high school graduates in the United States go on to pursue a bachelor’s degree, exposing more undergraduates to nonproliferation and disarmament issues could contribute to addressing both of these challenges. The present study analyzes how these issues are already being taught at select US colleges and universities and explores ways to introduce them to more students that align with current priorities in higher education, such as interdisciplinary learning, digital humanities, and data-science learning. It also proposes concrete steps that the WMD policy community can take to help institutions of higher education integrate these topics more broadly into their curricula. The anticipated result is greater support for education in this important issue area across different stakeholders in academia, as well as increased engagement with these critical issues among a more diverse population of young people.     

NATO Territorial Ballistic Missile Defense and its Implications for Arms Control

ABSTRACT

Since 2002, NATO's territorial missile defense has evoked continuous debates between NATO states and the Russian Federation. Thirteen years have passed without reaching a common denominator. This article provides a comprehensive overview of the historical background of the debate and the technical details of the missile defense system, highlighting its shortcomings and the state of its deployment process. It also contrasts the military-technical and political arguments of both sides, before addressing the applicable norms of international law to highlight violations and the effect of this noncompliance on existing arms control measures.     

考虑目标微多普勒频移的反导雷达配置模型

针对采用微多普勒频移识别目标的反导雷达,对其配置问题进行研究,以便更好地发挥其目标识别能力。首先,利用雷达性能参数,计算出要探测某一弹道时的雷达可配置区;其次,分析目标微多普勒频移对目标识别可能性的影响,以雷达覆盖区和高概率识别区的最大化为目标建立雷达的配置模型;最后,通过仿真分析发现通过调节雷达覆盖区与高概率识别区的权重,可以得到针对不同作战需求时的雷达配置方案。     

一种基于GPU的数字信道化处理方法

为了减少数字信道化接收机的开发成本,提高吞吐量与处理速度,对被动雷达截获信号数字信道化接收机的结构进行了研究,提出了一种基于GPU的数字信道化接收机的实现方法。该高效结构不仅节省了硬件成本,缩短了开发周期,而且加快了处理速度,达到了准实时性。实验结果表明:基于GPU的运算平台与CPU平台相比较,处理速度提高一倍左右。     

Special Section: Nuclear Stability In South Asia

The question of nuclear stability in South Asia is a subject of both academic and policy significance. It is the only region in the world that has three, contiguous nuclear-armed states: India, the People's Republic of China, and Pakistan. It is also freighted with unresolved border disputes. To compound matters, all three states are now modernizing their nuclear forces and have expressed scant interest in any form of regional arms control. These issues and developments constitute the basis of this special section, which explores the problems and prospects of nuclear crisis stability in the region.     

基于金属热变形的散斑干涉测温技术研究

从热传导和热弹性理论出发,得出轴对称金属薄板温度应变模型;利用ANSYS有限元计算分析软件分析金属薄板的热变形状态,并与建立的模型进行比对验证;搭建了基于CCD、计算机、激光光源的散斑干涉温度测量实验平台,以钢质薄板作为实验对象,记录不同温度下对应薄板热变形的散斑图像数据;得到了散斑干涉条纹与钢板热应变的对应关系,进而得到了温度与热应变的关系。通过理论分析和散斑干涉实验平台获得的实验数据验证表明,金属热变形温度测试技术方案可行,为兵器、航天领域振动、腐蚀等恶劣条件下的温度测试,提供了一种全新方案。