全文获取类型
收费全文 | 2950篇 |
免费 | 455篇 |
国内免费 | 231篇 |
出版年
2024年 | 4篇 |
2023年 | 10篇 |
2022年 | 23篇 |
2021年 | 39篇 |
2020年 | 34篇 |
2019年 | 65篇 |
2018年 | 53篇 |
2017年 | 112篇 |
2016年 | 116篇 |
2015年 | 89篇 |
2014年 | 223篇 |
2013年 | 289篇 |
2012年 | 194篇 |
2011年 | 240篇 |
2010年 | 189篇 |
2009年 | 239篇 |
2008年 | 183篇 |
2007年 | 213篇 |
2006年 | 211篇 |
2005年 | 194篇 |
2004年 | 171篇 |
2003年 | 137篇 |
2002年 | 94篇 |
2001年 | 86篇 |
2000年 | 58篇 |
1999年 | 58篇 |
1998年 | 43篇 |
1997年 | 43篇 |
1996年 | 42篇 |
1995年 | 27篇 |
1994年 | 32篇 |
1993年 | 24篇 |
1992年 | 24篇 |
1991年 | 21篇 |
1990年 | 30篇 |
1989年 | 12篇 |
1988年 | 11篇 |
1987年 | 2篇 |
1975年 | 1篇 |
排序方式: 共有3636条查询结果,搜索用时 15 毫秒
981.
982.
983.
984.
985.
Cornelia Vikan 《Journal of Military Ethics》2017,16(3-4):239-255
This paper discusses soldiers’ moral responsibility in today’s complex conflicts. The point of departure is the increased focus on soldiers as moral decision-makers in war, illustrated by the introduction of core values in the Norwegian Armed Forces. Responsibility is one of these core values, but it is not clear exactly how we should understand responsibility. I use a case where a group of Norwegian soldiers in the International Security Assistance Force (ISAF) sought the cooperation of a group of mujahedeen to solve the military mission of establishing security. As confidence between the parties grew, the soldiers became horrified witnesses to a practice of bacha bazi, where a young boy is dressed up for entertainment and sexual abuse. This situation gives reason to question the limits of role responsibility, the status of soldiers’ legitimacy, and the challenges of making morally sound judgments in a multicultural context. The discussion demonstrates that, even if there are restrictions on the soldiers’ freedom to act, a responsibility reaching beyond or extending their role should be recognized as part of the moral reality of modern soldiers. 相似文献
986.
雷达关联成像不依赖于雷达与目标的相对运动,是一种高分辨凝视成像方式。传统的关联成像方法未考虑复杂扩展目标的结构信息,在高分辨成像时的应用受到限制,为此提出一种自适应结构配对稀疏贝叶斯学习方法。该算法在稀疏贝叶斯学习的框架内针对扩展目标建立一种结构配对层次化高斯先验模型,然后采用变分贝叶斯期望-最大化算法交替进行目标重构和参数优化。该算法将某一信号分量的重构与周围信号分量联系起来,并能在迭代过程中自适应地调整表征各信号分量相关性的参数。实验结果表明,该方法针对扩展目标可以有效地进行高分辨成像。 相似文献
987.
Linnéa Gelot 《Contemporary Security Policy》2017,38(1):161-173
This article explores how the protection of civilians is being militarized by African policymakers and diplomats. I draw on practice approaches to analyze what social groups are doing when they claim to “protect civilians.” I show how innovative protection mechanisms can be seen as a function of officials and diplomats coping with the changing circumstances of increasingly militarized politics in Africa. Specifically, accountability mechanisms for unintended and intended civilian harm by African security operations have originated in connection with this development. I argue that these are results of anchoring practices, which means that everyday informal interactions in one context become linked to another context. I argue that these emerging accountability mechanisms represent a new combination of practices, with the potential of changing the routine activities and mutual learning between policymakers and diplomats. 相似文献
988.
The empirical international conflict literature has given much recent attention to interstate armed force’s impact on human well-being. While empirical research has advanced our understanding of the phenomenon considerably, we argue that one conclusion that many studies have reached is preliminary. Some recent research contends that only full-scale war, and not force short of war, has a discernable impact on human welfare or physical quality of life (PQOL). We develop theory on one type of force short of war, large-scale foreign military intervention (FMI), and its potential effects on PQOL. Using interrupted time series and panel corrected standard error methodologies, we find that from 1960 to 2005 large-scale FMI had a statistically and substantively significant impact on the PQOL of populations in 106 developing countries. The specific effect that this type of armed force has depended in large part on the regime type of the target country. 相似文献
989.
990.