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   124篇
  免费   7篇
  2019年   2篇
  2018年   2篇
  2016年   4篇
  2015年   2篇
  2014年   4篇
  2013年   16篇
  2012年   8篇
  2011年   9篇
  2010年   9篇
  2009年   6篇
  2008年   8篇
  2007年   8篇
  2006年   7篇
  2005年   3篇
  2004年   2篇
  2003年   2篇
  2001年   3篇
  2000年   1篇
  1999年   1篇
  1998年   1篇
  1997年   1篇
  1996年   1篇
  1995年   2篇
  1993年   3篇
  1992年   1篇
  1991年   3篇
  1990年   1篇
  1989年   2篇
  1988年   1篇
  1987年   2篇
  1986年   2篇
  1985年   1篇
  1984年   2篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1978年   1篇
  1976年   1篇
  1974年   1篇
  1973年   1篇
  1970年   1篇
  1968年   1篇
  1967年   2篇
排序方式: 共有131条查询结果,搜索用时 15 毫秒
41.
42.
43.
This article offers a discussion of nuclear doctrines and their significance for war, peace and stability between nuclear‐armed states. The cases of India and Pakistan are analysed to show the challenges these states have faced in articulating and implementing a proper nuclear doctrine, and the implications of this for nuclear stability in the region. We argue that both the Indian and Pakistani doctrines and postures are problematic from a regional security perspective because they are either ambiguous about how to address crucial deterrence related issues, and/or demonstrate a severe mismatch between the security problems and goals they are designed to deal with, and the doctrines that conceptualize and operationalize the role of nuclear weapons in grand strategy. Consequently, as both India's and Pakistan's nuclear doctrines and postures evolve, the risks of a spiralling nuclear arms race in the subcontinent are likely to increase without a reassessment of doctrinal issues in New Delhi and Islamabad. A case is made for more clarity and less ambition from both sides in reconceptualizing their nuclear doctrines. We conclude, however, that owing to the contrasting barriers to doctrinal reorientation in each country, the likelihood of such changes being made—and the ease with which they can be made—is greater in India than in Pakistan.  相似文献   
44.
45.
The UN conference to negotiate an Arms Trade Treaty (ATT) concluded on 27 July 2012 without reaching consensus on the text of a draft treaty and saw both the US and Russia calling for more time to negotiate. The ATT process marks the latest in a series of attempts to insert human security concerns into arms export controls. The setback in July raises questions about the current level of international support for the human security agenda, as well as the relative power of different actors to shape global governance structures. This article locates the ATT negotiations in the broader history of multilateral efforts to regulate the international arms trade, from the 1890 Brussels Act to post‐Cold War initiatives. The historical record shows that such efforts are more likely to succeed if they are negotiated or imposed by major arms exporters. The introduction of human security concerns, as well as the merging of export control and arms control agendas, went some way towards reversing this trend. In particular, it created a broad international coalition of supportive states and NGOs from the global North and South. Yet disagreements over the purpose of an ATT remained. The draft ATT included human security provisions, but China, Russia, the US and a number of emerging powers ensured that state security considerations remained paramount in decision‐making on arms exports. The US was the first major actor to announce its unwillingness to sign the draft ATT in July 2012 and two alternative interpretations of US actions are considered. The article concludes by considering the options available to supporters of the ATT process following the 2012 conference and examines the notion that the ATT campaign has become an initiative ‘out of its time’, one that might have had success in the 1990s but not in current circumstances.  相似文献   
46.
This article re‐examines the EU's character and potential as a strategic actor, setting that analysis in the context of the debate on strategic culture. The definition of strategic culture as the political and institutional confidence and processes to manage and deploy military force, coupled with external recognition of the EU as a legitimate actor in the military sphere, lends itself to a reappraisal around four core questions. First, military capabilities: establishing a European strategic culture is vital in order to rationalize the acquisition of capabilities necessary for the range of humanitarian and peacekeeping tasks envisaged. Equally, without military capabilities, all talk of a strategic culture would ring hollow. This article discusses how much closer the EU has come to acquiring those essential capabilities. Second, while the EU has gained significant experience of, albeit limited, military/policing experiences and established a growing reputation and some credibility for ad hoc action, to what extent and in what quarters have these experiences engendered a sense of reliability and legitimacy for autonomous EU action? Third, given that so far operations in the Democratic Republic of Congo and the Balkans have depended on an integrated civil–military effort, do the policy‐making processes of the EU now ensure the appropriate level and depth of civil–military integration? Finally, considering that EU operations have been limited in time and scope, and that much of the EU's work in the Balkans has depended upon cooperation with NATO, what can be said of the evolving relationship between the EU and NATO?  相似文献   
47.
Preparations for the next UK defence review are under way; a struggle is imminent and the lines of battle are being drawn. There is a grave danger that in the new 'age of austerity' defence planning—and strategy generally—will be driven by tribal conflicts, either between supporters of one or other of the armed services or between contending viewpoints about the nature of conflict. And there will be others who will argue that the defence review should be driven simply by the need to reduce government expenditure, as quickly as possible. These arguments not only reduce the defence debate to a struggle between various incompatible and uncompromising tribal beliefs—'war among the fetishes', perhaps—they also miss the point. This article gauges the extent of the economic challenges which the UK defence establishment will confront over the coming decade. The authors consider how best to approach the problem of undiminished (and even expanding) commitments at a time of decreasing resources. They argue that defence planning should be driven by the notion of value (the ratio of function to cost), which in turn requires both a clear national political vision and a defence establishment which is output- rather than input-oriented. Finally, the authors assert that defence must transform itself to be able to achieve the outputs required in the most efficient and responsive manner.  相似文献   
48.
Editorial     
  相似文献   
49.
Changes in channel morphology that occurred along the Macdonald River between 1949 and 1955 are often cited as an example of catastrophic channel change. However, the question of whether these changes represented one component of a cyclical evolutionary pattern, or a systematic and persistent shift to a new morphologic state remains to be clearly defined, as does the significance of these dramatic channel changes when viewed against the river's longer‐term Holocene history. In this paper, new measurements of the Macdonald River's channel morphology are used to resolve the river's evolution in the ~50 years since these major channel‐altering floods. By 2002, the Macdonald River's bed had narrowed considerably from its 1955 post‐flood maximum due to the construction of a new floodplain surface within the widened channel. In some locations, the 2002 bed width is comparable to that of the pre‐1949 channel. This aspect of the river's evolution follows models of cyclical channel evolution proposed for the region. However, in light of recent research into the river's longer term Holocene evolution, it is clear that other channel changes that occurred in response to the 1949–1955 floods, particularly the 2 metres of river bed aggradation and 7 kilometres down‐valley shift in the thalweg's intersection with mean sea level, are less cyclic in nature. The capacity of coastal rivers to prograde into estuaries, which in turn induces river bed aggradation, can be seen in this case to counteract the incisional tendencies associated with post‐flood channel contraction, such that persistent river bed aggradation occurs.  相似文献   
50.
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