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   468篇
  免费   15篇
  2021年   4篇
  2020年   4篇
  2019年   8篇
  2018年   5篇
  2017年   9篇
  2016年   9篇
  2015年   8篇
  2014年   9篇
  2013年   99篇
  2011年   5篇
  2009年   4篇
  2007年   7篇
  2005年   6篇
  2004年   8篇
  2003年   6篇
  2002年   8篇
  2001年   7篇
  2000年   4篇
  1999年   7篇
  1998年   10篇
  1997年   11篇
  1996年   8篇
  1995年   12篇
  1994年   13篇
  1993年   12篇
  1992年   12篇
  1991年   14篇
  1990年   6篇
  1989年   4篇
  1988年   8篇
  1987年   9篇
  1986年   4篇
  1985年   9篇
  1984年   9篇
  1983年   6篇
  1982年   6篇
  1981年   9篇
  1980年   9篇
  1979年   11篇
  1978年   7篇
  1977年   5篇
  1976年   7篇
  1975年   8篇
  1974年   7篇
  1973年   8篇
  1972年   8篇
  1971年   6篇
  1969年   6篇
  1968年   5篇
  1967年   4篇
排序方式: 共有483条查询结果,搜索用时 15 毫秒
161.
ABSTRACT

What do we mean by nuclear proliferation? What does it mean to proliferate? This article investigates both the literal and figurative meaning of the term “proliferation.” It argues that many of the definitions and conceptualizations of nuclear proliferation often used by scholars are either limited in their utility or logically inconsistent. It then reconceptualizes and redefines the term, incorporating an understanding of both its etymological origins and the geopolitical context in which the phenomenon occurs. It concludes by exploring the potential impact that the politicization of the phenomenon may have on the identification of occurrences of proliferation, from both an academic and a policy-making perspective.  相似文献   
162.
Full‐system testing for large‐scale systems is often infeasible or very costly. Thus, when estimating system reliability, it is desirable to use a method that uses subsystem tests, which are often less expensive and more feasible. This article presents a method for bounding full‐system reliabilities based on subsystem tests and, if available, full‐system tests. The method does not require that subsystems be independent. It accounts for dependencies through the use of certain probability inequalities. The inequalities provide the basis for valid reliability calculations while not requiring independent subsystems or full‐system tests. The inequalities allow for test information on pairwise subsystem failure modes to be incorporated, thereby improving the bound on system reliability. We illustrate some of the properties of the estimates via an example application. © 2013 Wiley Periodicals, Inc. Naval Research Logistics, 2013  相似文献   
163.
In Chechnya a protracted conflict only seemingly quieted down, but it still smolders and as the conflict is suppressed by coercion, it is inevitable that it will flare up at some time in the near future. The root causes of the conflict can be understood by use of globalization theory, which dialectically brings together the clashing forces from above and below. Civil society in Chechnya deteriorated, is politically curtailed, and has no resilience left. It thus results in a frozen conflict and an excluded and victimized society. Russian-style reconstruction does alleviate living conditions, but does not remediate the frozen conflict character of the present situation. The dynamics of the globalizing forces from below and above, summarized in the glocalization concept, not only explains the resistance by the Chechen people, for whom revolt, rebellion, and terrorism remain attractive options, but also serves as a model for other insurgencies. Reflecting on the two recent Chechen–Russian wars results in a paradigmatic case study.  相似文献   
164.
In 1897 and 1898, Winston Churchill participated in what late Victorian Britain termed ‘small wars’, first on India's northwest frontier and then in the vast wasteland of the Sudan. Churchill chronicled his experiences in these conflicts in personal letters, dispatches to newspapers, and in his first two books, The Story of the Malakand Field Force and The River War. These writings provide a snapshot of a particular period in the formative years of the great statesman, demonstrating through Churchill's eloquent analyses many of the contradictions concerning the conduct of small wars that have emerged in the present era.  相似文献   
165.
Throughout the 1990s Pakistan sought to cultivate ‘strategic depth’ throughout Iran, Afghanistan and the newly emergent Central Asian Republics while seeking to restrict Indian influence in the region. Chastened by its past failures, Pakistan now embraces more modest regional goals. Despite the diminution in objectives, several factors augur failure including Pakistan's policies in Afghanistan, which diminish the likelihood of a stable Afghanistan, and Pakistan's inability to pacify the various insurgencies roiling both Baluchistan and the Pashtun areas of the Federally Administered Tribal Areas as well as the Northwest Frontier Province.  相似文献   
166.
167.
168.
The Pakistan Army elicits many concerns about terrorism, nuclear and the coherence of the state. However, very little is actually known about this institution. This article mobilizes unique data to address one important facet: the Army's geographical recruitment base. We find that the Pakistan Army has been successful at expanding the geographical recruitment base while some groups (namely those who are native to Sindh) remain highly under-represented. We also find that the officer corps is increasingly coming from urban areas. We conclude with a discussion of the implications of these important shifts subject to the limitations of our data.  相似文献   
169.
This article proposes a case study to illustrate the usefulness of sociological institutional analysis as a method to uncover ‘blue force’ challenges to deal with irregular warfare. The French Army's adaptation to revolutionary warfare in Algeria, starting in 1954, is used to illustrate both the application of the methodology and how institutional forces can hinder as well as overwhelm transformation for irregular warfare. The analysis emphasizes three key dimensions of the French Army's institutional adaptation: the regulative, normative and cognitive. These empirical elements are used to show how they interacted and influenced the institutional implementation of the French COIN structures.  相似文献   
170.
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