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   3340篇
  免费   144篇
各国政治   377篇
工人农民   106篇
世界政治   306篇
外交国际关系   192篇
法律   1961篇
中国共产党   8篇
中国政治   11篇
政治理论   512篇
综合类   11篇
  2023年   25篇
  2022年   28篇
  2021年   56篇
  2020年   92篇
  2019年   104篇
  2018年   199篇
  2017年   190篇
  2016年   203篇
  2015年   143篇
  2014年   125篇
  2013年   380篇
  2012年   145篇
  2011年   120篇
  2010年   95篇
  2009年   115篇
  2008年   157篇
  2007年   178篇
  2006年   181篇
  2005年   104篇
  2004年   105篇
  2003年   95篇
  2002年   96篇
  2001年   81篇
  2000年   85篇
  1999年   38篇
  1998年   25篇
  1997年   17篇
  1996年   17篇
  1995年   12篇
  1994年   19篇
  1993年   13篇
  1992年   18篇
  1991年   18篇
  1990年   16篇
  1989年   17篇
  1988年   16篇
  1987年   15篇
  1986年   11篇
  1985年   15篇
  1984年   6篇
  1983年   11篇
  1982年   7篇
  1981年   13篇
  1980年   5篇
  1979年   15篇
  1978年   10篇
  1973年   11篇
  1972年   4篇
  1971年   8篇
  1965年   4篇
排序方式: 共有3484条查询结果,搜索用时 140 毫秒
1.
This article argues that Donald Trump’s Asian strategy hardly marks a radical transformation from Barack Obama’s ‘pivot to Asia’. This is because the ‘pivot to Asia’ never really existed. Although Obama was successful in building legitimacy for the strategy through international norms, he failed to translate his lofty rhetoric into practice. Much of his original pivot components (building a constructive relationship with China, coordinating with Asian allies and multilateralism in the Association of South East Asian Nations and the Trans-Pacific Partnership) has either failed or did not live up to expectations. Donald Trump was adamant that the Asian pivot was a bad strategy and that he would not follow it. But although he completely discarded Obama’s legitimization of the rebalance (as Trump speaks pragmatically and does not care about international norms), in actuality he has followed many of Obama’s policies, and even improved on some of them. That being said, Trump’s ‘pivot actions’ appear to be erratic, pragmatic short-term actions rather than a meticulously planned long-term strategy similar to Obama’s rebalance (which did not materialize). Thus, while Obama failed to transform the pivot into an effective strategy, neither is Trump’s effectiveness backed by a coherent Asian strategy.  相似文献   
2.
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   
3.
Minutiae are small distinguishing features found along every ridge flow, which make each friction ridge print unique. The most common friction ridge prints found at the crime scene are fingerprints; therefore, the most of the minutiae studies are focused exactly on this kind of prints. The authors believe that further examination and enlargement of the palm print database could result in better use of the palm prints for personal identification. We analyzed a total of 160 palm prints from 40 females and 40 males aged between 18 and 70 years from Slovakia. For the evaluation of the minutiae, the area of the hypothenar had to be marked out. The classification of the minutiae used for this study was based on a modified version of the classification system using the total of 13 types of minutiae. The frequency of every minutiae type was calculated and, using the chi-square test with Yates's correction, bilateral and sex differences were assessed. The relationship between the different types of minutiae was examined with Pearson's correlation test. During the initial phases of the identification process, the focus should be on the least common types of minutiae (Y or M and return), which were found not to correlate; thus, their mutual occurrence is random (e.g., overlap—Y or M, crossbar—return, or Y or M—dock). The results of the present study show which specific minutiae types are the most suitable for personal identification. These findings may be beneficial in more effective outcome of the identification process.  相似文献   
4.
5.
Journal of Youth and Adolescence - Chronotype, or morningness/eveningness, has been associated with adjustment in both children and adolescents. Specifically, eveningness has been linked to...  相似文献   
6.
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   
7.
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