全文获取类型
收费全文 | 3161篇 |
免费 | 526篇 |
国内免费 | 199篇 |
出版年
2024年 | 4篇 |
2023年 | 9篇 |
2022年 | 23篇 |
2021年 | 37篇 |
2020年 | 35篇 |
2019年 | 69篇 |
2018年 | 61篇 |
2017年 | 120篇 |
2016年 | 125篇 |
2015年 | 85篇 |
2014年 | 285篇 |
2013年 | 341篇 |
2012年 | 207篇 |
2011年 | 269篇 |
2010年 | 229篇 |
2009年 | 250篇 |
2008年 | 203篇 |
2007年 | 239篇 |
2006年 | 202篇 |
2005年 | 191篇 |
2004年 | 180篇 |
2003年 | 143篇 |
2002年 | 94篇 |
2001年 | 104篇 |
2000年 | 54篇 |
1999年 | 50篇 |
1998年 | 37篇 |
1997年 | 35篇 |
1996年 | 33篇 |
1995年 | 26篇 |
1994年 | 35篇 |
1993年 | 21篇 |
1992年 | 21篇 |
1991年 | 16篇 |
1990年 | 26篇 |
1989年 | 14篇 |
1988年 | 10篇 |
1987年 | 2篇 |
1975年 | 1篇 |
排序方式: 共有3886条查询结果,搜索用时 15 毫秒
941.
942.
943.
图像修复是指对图像破损区域进行填充或者将图像中多余物体进行移除。在Criminisi算法的基础上进行改进,在待修复块优先权的计算过程中,由于等照度线的曲率可以反映图像的局部特征,块与块之间的方差值可以反映图像的边缘信息,因此,将二者考虑进来,确保修复过程能够准确有序地进行。在寻找最佳匹配块时,将等照度线的曲率也作为一个因素增加进来,有效地提高了最佳匹配块搜索的精确性。经过仿真实验证明,改进后的算法不仅在PSNR值上比原算法有所提高,而且修复结果也比原算法更加准确可靠。 相似文献
944.
945.
946.
947.
948.
949.
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
950.
Namrata Panwar 《Small Wars & Insurgencies》2017,28(1):233-258
Do ceasefires or peace talks create fragmentation in the insurgent groups? Rather than proposing claims that can offer predictions about armed groups behaviour under ceasefires or peace processes, the analysts tend to focus largely on the dynamics between state and non-state actor. The experts pay little attention to overtime changes in social and local political context which might contribute to propelling a rebel group towards fragmentation and factionalism. The present study intends to fill this gap by exploring the shifting role of public opinion and ethnic support for the peace talks to ascertain whether it can increase the likelihood of factionalism in rebel groups or not. This article applies this approach to the case of Naga National Movement (1947–2015) in India, and finds that the proposed variable appears to have increased the frequency of factionalism in the movement. 相似文献