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   2735篇
  免费   81篇
各国政治   132篇
工人农民   219篇
世界政治   186篇
外交国际关系   116篇
法律   1812篇
中国政治   12篇
政治理论   333篇
综合类   6篇
  2023年   18篇
  2022年   16篇
  2021年   32篇
  2020年   47篇
  2019年   55篇
  2018年   164篇
  2017年   85篇
  2016年   158篇
  2015年   62篇
  2014年   69篇
  2013年   217篇
  2012年   178篇
  2011年   131篇
  2010年   40篇
  2009年   49篇
  2008年   48篇
  2007年   50篇
  2006年   53篇
  2005年   418篇
  2004年   143篇
  2003年   61篇
  2002年   35篇
  2001年   45篇
  2000年   36篇
  1999年   23篇
  1996年   9篇
  1994年   10篇
  1992年   30篇
  1991年   32篇
  1990年   35篇
  1989年   43篇
  1988年   34篇
  1987年   36篇
  1986年   32篇
  1985年   25篇
  1984年   16篇
  1983年   19篇
  1980年   10篇
  1979年   17篇
  1978年   16篇
  1975年   15篇
  1974年   24篇
  1973年   22篇
  1972年   19篇
  1971年   27篇
  1970年   14篇
  1969年   8篇
  1968年   12篇
  1967年   11篇
  1965年   9篇
排序方式: 共有2816条查询结果,搜索用时 15 毫秒
1.
Abstract

This article reports and discusses the results of a study that investigated photographic images of children in five online terrorist magazines to understand the roles of children in these groups. The analysis encompasses issues of Inspire, Dabiq, Jihad Recollections (JR), Azan, and Gaidi Mtanni (GM) from 2009 to 2016. The total number of images was ninety-four. A news value framework was applied that systematically investigated what values the images held that resulted in them being “newsworthy” enough to be published. This article discusses the key findings, which were that Dabiq distinguished different roles for boys and girls, portrayed fierce and prestigious boy child perpetrators, and children flourishing under the caliphate; Inspire and Azan focused on portraying children as victims of Western-backed warfare; GM portrayed children supporting the cause peacefully; and JR contained no re-occurring findings.  相似文献   
2.
In response to research demonstrating that irrelevant contextual information can bias forensic science analyses, authorities have increasingly urged laboratories to limit analysts' access to irrelevant and potentially biasing information (Dror and Cole (2010) [3]; National Academy of Sciences (2009) [18]; President's Council of Advisors on Science and Technology (2016) [22]; UK Forensic Science Regulator (2015) [26]). However, a great challenge in implementing this reform is determining which information is task-relevant and which is task-irrelevant. In the current study, we surveyed 183 forensic analysts to examine what they consider relevant versus irrelevant in their forensic analyses. Results revealed that analysts generally do not regard information regarding the suspect or victim as essential to their analytic tasks. However, there was significant variability among analysts within and between disciplines. Findings suggest that forensic science disciplines need to agree on what they regard as task-relevant before context management procedures can be properly implemented. The lack of consensus about what is relevant information not only leaves room for biasing information, but also reveals foundational gaps in what analysts consider crucial in forensic decision making.  相似文献   
3.
Abstract

Despite shared historical experience and cultural proximity, the Visegrad group (V4) struggles to institutionalise its cooperation through stable mechanisms ensuring internal cohesion and external credibility. This is especially evident in the field of security and defence, which requires a shared strategic vision, in particular, common norms regarding the legitimate use of military force. While in the 1990s the four countries exhibited solidarity and unity in their collective ambition under the narrative of the ‘Return to Europe’, their general perception of security threats and strategic culture prevents deeper integration into a security community.  相似文献   
4.
5.
6.
7.
Stab wounds were made in parenchymatous organs (e.g. liver, spleen, kidneys, lungs) using a variety of instruments. The shape of the resulting canal was investigated by X-ray analysis after introduction of an X-ray contrast medium. The best contrast was obtained using a contrast medium containing barium. The shape of the canal gave a direct representation of the outline of the instrument used. The width of the canal was however, always several millimeters smaller than the corresponding blade of the instrument. The position of the blade back in single-edged blades could be demonstrated with stronger contrast.  相似文献   
8.
9.
10.
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