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   667篇
  免费   16篇
  2019年   19篇
  2018年   7篇
  2017年   21篇
  2016年   11篇
  2015年   14篇
  2014年   18篇
  2013年   153篇
  2012年   6篇
  2010年   9篇
  2009年   12篇
  2007年   7篇
  2006年   8篇
  2005年   9篇
  2004年   11篇
  2003年   5篇
  2002年   11篇
  2001年   5篇
  2000年   9篇
  1999年   7篇
  1998年   15篇
  1997年   7篇
  1996年   10篇
  1995年   6篇
  1994年   16篇
  1993年   16篇
  1992年   11篇
  1991年   14篇
  1990年   9篇
  1989年   16篇
  1988年   17篇
  1987年   18篇
  1986年   18篇
  1985年   14篇
  1984年   8篇
  1983年   7篇
  1982年   8篇
  1981年   8篇
  1980年   5篇
  1979年   8篇
  1978年   13篇
  1976年   7篇
  1975年   6篇
  1974年   8篇
  1973年   7篇
  1972年   9篇
  1971年   5篇
  1970年   9篇
  1969年   7篇
  1968年   5篇
  1967年   7篇
排序方式: 共有683条查询结果,搜索用时 15 毫秒
671.
672.
673.
ABSTRACT

The International Atomic Energy Agency (IAEA) faces challenges in fulfilling its safeguards mandate as a result of an expanding safeguards burden and a relatively static budget. This dilemma has been exacerbated by the additional burdens of implementing the Joint Comprehensive Plan of Action (JCPOA) in Iran, but would not go away if implementation of the JCPOA were to end. There are three main areas of opportunity for the Agency: (1) budgetary expansion tied to changes in staffing policies, (2) changes in safeguards approaches, and (3) technological innovation. Barriers and limitations are associated with each approach, and advancing any of them will face a difficult political environment in Vienna.  相似文献   
674.
ABSTRACT

Insurgencies remain political projects, and thus the American experience in Vietnam remains relevant in any search for approaches. A population-first strategy – with tactics compatible with protecting people and winning their willing support – is essential, as much for success in local pacification as in retaining support in the homeland which has deployed its personnel abroad to assist another state. In the actual area of operations, decentralization of effort is required to get as close as possible to the population base being targeted by the insurgents. This remains essential for all mobilization in support of a polity, regardless of the extent to which insurgent challenge is grounded in grievances or simply based on coercive power.  相似文献   
675.
676.
677.
ABSTRACT

Cyber attack against Critical National Infrastructure is a developing capability in state arsenals. The onset of this new instrument in national security has implications for conflict thresholds and military ethics. To serve as a legitimate tool of policy, cyber attack must operate in accordance with moral concerns. To test the viability of cyber attack, this paper provides a new perspective on cyber ethics. Cyber attack is tested against the criteria of the common good. This involves identifying the four core components of the common good from a conflict perspective: respect for the person; social wellbeing; peace and security; and solidarity. The fate of these components is assessed in relation to the six key characteristics of cyber attack from a moral standpoint: security; the role or absence of violence; discrimination; proportionality; cyberharm; and the threshold of conflict. It is concluded that the common good must be incorporated into developing state cyber strategies.  相似文献   
678.
679.
ABSTRACT

A call for innovation as a means to outpace the acceleration of technological change and to bolster capabilities quickly is a central theme of contemporary U.S. Naval Strategy. The need for innovation is accepted, but the integration of readily available technologies into the Fleet is slow. Innovation unfolds according to “Navy-Time,” a cycle lasting between a long-decade and thirty-years. To accelerate the innovation process in the U.S. Navy, the article offers a Concept of Operations for Innovation that outlines how a deliberate process of analysis, weaponisation and integration can move new ideas and weapons into the Fleet in a strategically relevant time-frame.  相似文献   
680.
ABSTRACT

For the first time in a generation, the US Navy finds itself in an era of great power competition. As US naval strategists and defense planners begin to organise materially and conceptually to confront the strategic and operational-level challenges posed by China and Russia, what should they keep in mind? What should frame their thinking? Absorbed with the day-to-day tasks associated with managing how the fleet is being built, operated, and rationalised, these busy officers and civilians seldom can step back and gain some perspective on fundamental aspects of the security environment and relate those to naval purpose. To that end, this article provides a primer on what to keep in mind and how to think in an era of maritime great power competition.  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