首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   489篇
  免费   94篇
  国内免费   76篇
  2024年   2篇
  2023年   3篇
  2022年   2篇
  2021年   8篇
  2020年   8篇
  2019年   13篇
  2018年   21篇
  2017年   33篇
  2016年   25篇
  2015年   26篇
  2014年   37篇
  2013年   53篇
  2012年   45篇
  2011年   42篇
  2010年   21篇
  2009年   32篇
  2008年   22篇
  2007年   32篇
  2006年   54篇
  2005年   39篇
  2004年   26篇
  2003年   21篇
  2002年   9篇
  2001年   21篇
  2000年   20篇
  1999年   15篇
  1998年   5篇
  1997年   3篇
  1996年   3篇
  1995年   1篇
  1994年   4篇
  1993年   5篇
  1992年   1篇
  1991年   2篇
  1990年   3篇
  1989年   1篇
  1987年   1篇
排序方式: 共有659条查询结果,搜索用时 15 毫秒
551.
ABSTRACT

The United States has provided substantial amounts of military assistance and aid since the end of World War Two. During the Cold War, it proved vital in protecting numerous regimes from communist takeovers. Successful outcomes occurred when American leaders made large initial aid commitments, and the states had the capacity and political willpower to use it effectively. However, Vietnam was an example of how U.S. support lagged, as leaders in Saigon preferred political survival instead of creating regime legitimacy. Following 9/11, American security aid focused on making weak countries develop stronger security forces. Unfortunately, this created Fabergé egg militaries: expensive and easily broken by insurgents. This article suggests long-term strategic commitments need to be made alongside more resources for the American State Department and similar organizations to focus on the politics of state-building. Finally, this article suggests strategies, such as “whole-of-government” approaches, to improve long-term security and political institution building.  相似文献   
552.
How do we understand combat effectiveness – soldiers’ performance in battle? Despite the broad consensus that understanding combat effectiveness is important both for scholars and policymakers, there is widespread disagreement about what combat effectiveness is. More specifically, studies of effectiveness tend to focus on either the skill of soldiers in battle, or their will to fight. Yet both skill and will are essential components of an effective fighting force. This article argues that understanding combat effectiveness requires understanding both of these key components of effectiveness. In other words, combat effectiveness requires both the skill and will to engage the enemy in an organized manner. It then demonstrates the usefulness of this conceptualization by applying it to the cases of British, Indian, and Australian forces fighting the Japanese during the Second World War. Only when scholars are talking about the same concept will our understanding of the conditions under which militaries are effective in battle progress. By comparing different units fighting the same opponent under the same material conditions, I demonstrate that units vary both in their combat skill and their will to fight, and that understanding their effectiveness in battle requires analyzing both of these key factors.  相似文献   
553.
This paper investigates the effect of military burden on economic growth and extends previous works on the optimal size of government expenditure by exploring how external threat affects the preferences of the households and, in turn, economic growth. Post World War II Italian data are used to estimate nonlinear growth models using time-series semi-parametric methods. The estimates show that total government and civilian burdens are productive, whereas, military burden has significant effects on economic growth through the expenditure for peacekeeping missions, which reduces the insecurity in the home country. This may justify economically the current not negligible budget devoted to peacekeeping and humanitarian missions.  相似文献   
554.
数字图书馆中地理信息系统的设计与实现   总被引:8,自引:2,他引:6       下载免费PDF全文
提供地理信息服务是数字图书馆建设的一项重要内容。分析了数字图书馆中地理信息系统的特点,介绍了系统所涉及的相关技术,设计并实现了一个原型系统。  相似文献   
555.
李雯  何孟良  侯霞 《国防科技》2020,41(5):84-89
俄罗斯按照建设航天力量的需求,积极研究现代空天防御教学技术设备。俄罗斯空天防御教学训练设备可帮助受训者利用所获得的知识与能力,在准备和完成实践任务时在不同系统设备间实现不同级别的综合协同,将实现结构和软件的模块化。俄航天兵使用空天防御教学训练设备的经验对军队空天防御专业人员训练具有重要的借鉴意义。本文分析了俄罗斯空天防御教学训练设备现状,研究了朱可夫空天防御军事学院一体化空天防御自动化控制系统教学试验模型的构成、原理、作用和应用,总结了俄罗斯空天防御教学训练设备在国家标准、教学法、工效学和组织方面存在的主要问题及解决办法,以期为军队空天防御教学训练设备发展提供参考。  相似文献   
556.
The most effective way for the Western profession of arms to use history is to disavow the purism and narrow specialisation of today’s academia in favour of developing a contemporary approach to the subject. The latter aims to foster a range of applied diagnostic skills that transcend the temporal dimensions of past, present, and future. A contemporary approach to history for military professionals emphasises the use of inter-disciplinary war studies to enhance policy relevance. In any defense and security organisation, history must be usable in the sense of providing cognitive and interpretative skills for probing relationships between possibility and actuality, between experience and expectation, and between singularity and repetition. Using history to examine such dialectical interconnections is particularly valuable when military establishments confront their essential task of analyzing emerging trends in the future of war.  相似文献   
557.
互联网的高速发展在带来社会发展与文明进步的同时,也让世界对网络更加依赖,随之而来的网络空间军备竞赛、网络犯罪和网络恐怖主义,使网络空间的攻防行动变得愈加频繁,网络空间安全形势愈发严峻。本文利用兰彻斯特型方程建立网络攻防模型来分析网络攻防行动,证明网络攻防行动是非对称的作战手段和新时代的游击战争,并得出对我国网络空间国防力量建设的启示。   相似文献   
558.
在分析公安边防部队基层干部监督的特点及现状的基础上,构建以党内监督、行政监督、群众监督、新闻舆论监督、法制监督、自我监督为主体,相互协调、相互促进的公安边防部队基层干部"六结合"监督模式。  相似文献   
559.
根据防空作战的实际,分析了传统算法在计算防空火力单元射击有利度过程中存在的局限性,引入了防空火力单元可射击系数、电磁环境修正系数这两个参数,并结合高炮、地空导弹武器系统的差异,对防空火力单元可射击系数、电磁环境修正系数这两个参数的具体计算方法进行了介绍。在此基础之上,对传统算法进行了改进,提高了防空火力单元射击有利度计算算法的合理性和科学性。  相似文献   
560.
提出了一种新的文档防篡改算法,将文档和数字图章的签名信息进行不同处理后,利用小波变换的多分辨率特性,在小波变换的中频部分嵌入鲁棒性水印,而在容易遭受攻击破坏的高频部分嵌入脆弱水印。对文档的各种篡改仿真实验表明,该算法对保证文档的安全性和完整性有很好的效果。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号