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101.
美国海军正在发展的水下探测系统   总被引:3,自引:0,他引:3  
本文介绍了目前美国海军正在发展的几种水下探测系统。主要包括:先进可展开系统(ADS),商用现成技术固定式分布系统(FDS-C),商用声学流行技术快速嵌入计划(A-RCI),潜艇拖曳阵系统(TB-29A)和无人水下航行器(UUV)。  相似文献   
102.
Adopting the analytical framework of the established interpretive “schools” of Anglo-American relations, this article offers several reflections on UK–US defense relations as they occurred over the significant years of 2000–2005. During those years, trajectories were established on which UK–US defense relations continue to travel today and outcomes emerged which are still being navigated. This article concludes that the Latin phrase, “Flectas Non Frangas” (essentially translated as: “Bend not Break”), is the most appropriate to adopt to characterize the developments undergone in recent UK–US defense relations. Many historical and strategic lessons with contemporary relevance are drawn.  相似文献   
103.
Countries with a federalist system of government have different arrangements for providing national security. US national security is provided by national and State defense forces. The quintessential national function – national defense – experienced some changes that enhanced the role of the States. Policy changes in the National Defense Authorization Act of 2008 (2008 NDAA) introduced new roles for the Governors and the State defense forces, or the National Guard. This article explores how the interests of Congress and States aligned in the 2008 NDAA such that the national defense function changed. This article finds that the national government continues to have the central coordinating role, but that the politics and provisions of the 2008 NDAA changed the national–State relationship in mission, decision-making, and command and control so that US federalism in the national defense function is evolving in unexpected ways.  相似文献   
104.
Since 2012, China’s assertion of its sovereignty claim to the contested Senkaku/Diaoyu Islands has significantly raised the risk of a potentially escalatory political-military crisis with Japan. As circumstances worsen, Japanese Prime Minister Shinzo Abe has championed major institutional reforms aimed at centralizing Japanese security policy decision-making and vastly improving crisis management. This article assesses these reforms’ significance for ameliorating Japan’s long-standing internal crisis management weaknesses, and enhancing its ability to communicate with Beijing promptly under challenging conditions. While significant issues remain, recent developments – especially the establishment of Japan’s first-ever National Security Council – demonstrate significant progress. Bilaterally, however, important firebreaks remain conspicuously absent.  相似文献   
105.
黄麟萁 《国防科技》2017,38(2):068-071
为应对海军在全球公域投送力量时面临的严重"反介入/区域拒止"(anti-access/areal denial,A2/AD)挑战,美国海军利用电磁作战方面的技术优势,率先提出并重点发展了"电磁机动战"。虽然该理论还处于进一步完善当中,但随着研究和实施的深入,将有助于提高美国海军在电磁领域的作战优势。  相似文献   
106.
韩党生 《国防科技》2017,38(2):089-093
美军"作战云"理论的制胜机理是以云计算技术作为物质基础和技术依托,以"云部署、云聚合、云攻击(防御)、云消散"体现作战过程,以"集中指挥、分布式控制和分散执行"为基本指控方式,以"跨域协同"作为作战协同的基本方式。由于该理论实现了战场信息的有效融合和共享,作战力量的动态聚能和释能,作战任务的临时赋予和即时完成以及不同领域作战能力的互补增效,因此将促使美军的武器装备、力量结构、作战方式及战场形态等发生新的重大变化。  相似文献   
107.
Canada is now at a crossroads unlike any other period in its history and needs to carefully consider which path to take. With the new Trudeau government comfortably ensconced since the defeat of the Harper government in the fall of 2015, a variety of competing interests have emerged in an attempt to turn Canadian policy back to a more nostalgic period of the 1970s that some see as preferable to the institutional lash-up that existed since the rolling out of the Canada First policy in the 2000s. That nostalgic period is, however, misunderstood both willfully for political purposes but also through a lack of historical context. Firmly rooting future actions in a blunt analysis of national interests is preferable to the alternative.  相似文献   
108.
RSA—TBOS是在CT—RSA2003会议上提出的一种基于RSA的签密方案。它设计巧妙,使用双层包裹的方式将加密和签名融合到一起,使得签密密文的长度与普通签名或加密的长度相等,从而取得“一箭双雕”的效果。经对RSA—TBOS的安全性进行分析,证明了在某些特定参数设置下,RSA—TBOS的安全性不高。  相似文献   
109.
Palestinian uprising, ‘intifada’, aggravated the recession of 2001–2004 in Israel which dampened demand for labor in all industries except security services. We use this exogenous shock to study whether a cohort of young men who were attached to temporary jobs as security guards for unusually long periods of time during the intifada landed on an inferior career path, as compared to security guards from a pre-intifada cohort. We find that the intifada cohort had less employment mobility, were ultimately less connected with the labor market, and earned less on jobs after the security services, relatively to the pre-intifada cohort.  相似文献   
110.
学习环境对于语言学习者至关重要,就外部环境和内部环境相互关系而言,外部环境影响人的学习态度和认知过程,内部环境控制外部环境的影响力。这些因素无疑能促进英语学习,但也可能在某种程度上阻碍英语学习的进步。在对几所公安现役部队院校的英语学习环境调查后发现,英语学习环境不容乐观,还有很多急需改进之处,应引起有关方面的重视。  相似文献   
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