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   208篇
  免费   14篇
  国内免费   5篇
  2021年   7篇
  2020年   13篇
  2019年   9篇
  2018年   8篇
  2017年   12篇
  2016年   13篇
  2015年   7篇
  2014年   11篇
  2013年   52篇
  2012年   15篇
  2011年   12篇
  2010年   16篇
  2009年   2篇
  2008年   3篇
  2007年   5篇
  2006年   5篇
  2005年   4篇
  2004年   5篇
  2003年   10篇
  2002年   2篇
  2000年   3篇
  1999年   1篇
  1998年   1篇
  1997年   3篇
  1995年   1篇
  1994年   2篇
  1990年   1篇
  1988年   3篇
  1987年   1篇
排序方式: 共有227条查询结果,搜索用时 203 毫秒
51.
What are relationships between epidemics, national security, and US immigration policy? This question is important because it sheds light on transnational or nontraditional security areas, American immigration policy, and a pressing issue for US leaders who have recently faced epidemics such as the West Africa Ebola outbreak that began in 2013. This article answers it and lays ground in the area by reviewing epidemics in world history, using International Relations and Security Studies works to specify dangers of contagions for states, and identifying three general immigration measures that American leaders have utilized from the seventeenth century to the present day to protect against contagions, which are (1) policies restricting entrance of foreigners thought to carry specified diseases, (2) the isolation or quarantining of immigrants with contagious disease, and (3) delegating the President with authority to stop immigration in the event of an epidemic abroad. This study has implications for research and contemporary US immigration policy.  相似文献   
52.
Among the multiple dimensions of the tous azimuths modernisation of Chinese naval forces, the development of China’s anti-access capacity has recently elicited considerable interest. The important link between this capacity and an overarching vision of the use of force – i.e. a naval doctrine – has, however, often been left implicit. This article shows that the particular development of China’s naval anti-access forces – more precisely, forces with an impact on the naval balance – can be explained by a shift of China’s naval doctrine towards a distinctly pre-emptive posture, which, itself, stems from the set of constraints imposed by the framework of ‘local war under informationised conditions’.  相似文献   
53.
Japan has been overlooked as a ‘cyber power’ but it now becoming a serious player in this new strategic domain. Japanese policy-makers have forged a consensus to move cybersecurity to the very core of national security policy, to create more centralized frameworks for cybersecurity, and for Japan’s military institutions to build dynamic cyberdefense capabilities. Japan’s stance has moved rapidly toward the securitization and now militarization of responses to cyber challenges. Japan’s cybersecurity stance has bolstered US–Japan alliance responses to securing all dimensions of the ‘global commons’ and extended its defense perimeter to further deter but potentially raise tensions with China.  相似文献   
54.
Military commanders, policymakers, and analysts have recently embraced the concept of combined action as a powerful tool to improve the effectiveness of Afghan security forces in the fight against the Taliban. In doing so, they explicitly draw inspiration from the Combined Action Program employed by US Marines during the Vietnam War. This program is widely considered to have greatly improved the effectiveness of South Vietnamese government forces and contributed to increased population security in its area of operations and is considered a model worthy of emulation. This study finds that the success of the Vietnam-era Combined Action Program was more qualified than contemporary proponents argue. It argues that successes were tempered, and conditioned, by the choice of junior commanders, the level of operational control enjoyed by the US Marines, and the way the local forces were recruited and deployed. These conditions offer valuable lessons for those seeking to employ combined action not only in present-day Afghanistan, but also in future counterinsurgency campaigns.  相似文献   
55.
Abstract

This article surveys China’s current naval forces and considers key dynamics and possible Chinese naval futures to 2020, the projected end of Beijing’s ‘strategic window of opportunity’, the idea that a peaceful external environment for economic development, globalization, and integration of China into the global economy allows China to benefit from diversion of US attention to countering terrorism. It considers broad possibilities through 2030, the general limit of public US government projections, and by which time multiple factors will likely slow China’s growth and compete for leadership focus and resources.  相似文献   
56.
When United States (US) President Barack Obama announced in 2013 that he would host the first United States-Africa leaders' summit the next year, he was greeted with considerable scepticism. Many critics thought he was just playing catch-up with other countries and organisations which had been holding Africa summits for years, especially China. But, whatever the motives, the event itself proved to be a substantial success, probably re-setting US relations with Africa for many years to come.  相似文献   
57.
Manning difficulties and retention of skilled personnel is a timely issue in the British armed forces, and especially in the all‐volunteer Royal Navy. Allied with difficulties of matching personnel numbers and posts, significant skill mismatches can take a long time to eradicate, with obvious financial and operational penalties. In the light of these factors, a holistic understanding of the exit behaviour of naval personnel is vital for naval manpower planners. This paper analyses ratings’ voluntary (quits) and involuntary (separation) exit patterns from the Royal Navy using an independent competing risks hazard regression analysis framework. The results show that both voluntary and involuntary exits are pro cyclical with respect to macroeconomic and labour market conditions for both male and female ratings. Male ratings are more likely to quit or separate due to a lack of promotion to higher ranks as compared with females. Male ratings are also more likely to quit as a result of a hectic operational tempo when compared with their female counterparts. Frequency of sea/shore deployments also seems to exert a significant effect with respect to quits and separation outcomes of both genders. In terms of marital status married males are less likely to quit compared with their unmarried male counterparts, whereas the opposite is the case for female ratings.  相似文献   
58.

We briefly illustrate the application of fundamental principles of economics to three episodes of military history for the second millennium AD. The periods, principles, and cases examined are, first, the European Middle Ages (1000-1300; opportunity cost; siege warfare); second, the Enlightenment and the Age of Battle (1618-1814; expected marginal costs/benefits; the decision to engage in battle); and third, the Cold War (1945-1989; substitution; France's nuclear force de frappe).  相似文献   
59.
Abstract

The creation of the Africa Command (AFRICOM) has reflected the growth in the strategic importance of Africa in US foreign policy since the end of the 1990s. One of the objectives of this new geographical military command is to forge closer links between foreign, security and development policies. However, this approach met with a number of difficulties associated with the challenge of ‘inter-agency cooperation’ among rather disparate actors from foreign affairs, defence and development. In addition, the establishment of AFRICOM has met with fierce criticism in the US and elsewhere – especially in Africa – culminating in the charge that the US foreign and development policies in Africa are being militarised. Although AFRICOM has a number of interesting features, this paper shows that it has reacted to these criticisms by realigning itself more closely with the traditional model of a military command, at the expense of the innovative interagency elements.  相似文献   
60.
This article examines the ways in which the two normative concerns of casualty-aversion and civilian protection influenced US military strategy in the particular context of the asymmetric conflict in Somalia in the early 1990s. The article critically evaluates US military operations through the prism of international humanitarian law and examines whether American forces started prioritizing casualty-aversion over the safeguarding of Somali civilians. Finally, by drawing on emerging moral guidelines (such as Michael Walzer's idea of ‘due care’), the article examines whether lower numbers of Somali civilian deaths could have been achieved if marginal increases to the risks faced by US soldiers had been accepted.  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