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   64677篇
  免费   3274篇
各国政治   4430篇
工人农民   2789篇
世界政治   5800篇
外交国际关系   3759篇
法律   29132篇
中国共产党   9篇
中国政治   737篇
政治理论   20355篇
综合类   940篇
  2023年   355篇
  2021年   398篇
  2020年   1153篇
  2019年   1511篇
  2018年   1612篇
  2017年   1908篇
  2016年   2132篇
  2015年   1816篇
  2014年   2085篇
  2013年   10430篇
  2012年   1505篇
  2011年   1577篇
  2010年   1751篇
  2009年   2013篇
  2008年   1626篇
  2007年   1580篇
  2006年   1757篇
  2005年   1674篇
  2004年   1575篇
  2003年   1367篇
  2002年   1417篇
  2001年   1368篇
  2000年   1168篇
  1999年   1091篇
  1998年   1073篇
  1997年   936篇
  1996年   920篇
  1995年   880篇
  1994年   879篇
  1993年   910篇
  1992年   857篇
  1991年   878篇
  1990年   856篇
  1989年   887篇
  1988年   886篇
  1987年   901篇
  1986年   861篇
  1985年   949篇
  1984年   857篇
  1983年   902篇
  1982年   856篇
  1981年   810篇
  1980年   628篇
  1979年   637篇
  1978年   560篇
  1977年   498篇
  1976年   462篇
  1975年   376篇
  1974年   378篇
  1973年   392篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
161.
162.
The concern driving current debate on agricultural extension is increasingly that of how to help farmers learn how to deal with the complex world around them responsibly and profitably, in such a way that the extension worker is ancillary. This article seeks to deconstruct and provide a more reasoned assessment of agricultural extension services through a reflection on development paradigms, adult education, individual empowerment, and institutional pluralism. By calling into question the underlying ethical dimensions of agricultural extension, it is possible to develop an alternative paradigm and thereby generate new insights into it. The article concludes that the raison d'être of agricultural extension today must be to create an ethical basis which ensures that extension practices are more inclusive and thus responsive to the needs of farmers and other rural populations, integrating individual expectations into the wider socio-economic, cultural, political, and geographical environment.  相似文献   
163.
The accountability of international development NGOs (INGOs) has attracted a great deal of interest from academics and development practitioners. INGO accountability falls into two categories: practical accountability (for the use of inputs, the way activities are performed, and outputs) and strategic accountability for INGOs' performance in relation to their mission. This article presents a conceptual framework for exploring INGO accountability. It is based on information collected through a literature review and semi-structured interviews with representatives from 20 UK-based INGOs. The research found that INGOs tend to use a number of quality-assurance mechanisms to achieve ‘practical’ accountability. However, it is suggested that this kind of accountability will not necessarily enable INGOs to achieve their missions to alleviate poverty and eliminate injustice. Furthermore, the predominant use of practical accountability has led to a number of gaps in INGO accountability. It is suggested that, like the term ‘participation’ before it, accountability has been co-opted for its instrumental benefits to INGO project performance and management. It is argued that if INGOs are to achieve their missions, this will require more ‘strategic’ forms of accountability, geared towards fundamentally changing those social, economic, and political structures that promote poverty.  相似文献   
164.
Corporate governance theory suggests that companies with dispersed and indirect ownership suffer from agency costs. A worst case is where several political authorities jointly own a company, which allows managers to operate with inferior efficiency. In political economy, the manager is not the major agency problem. Elected politicians may impair efficiency to improve their re‐election prospects. Since politicians have less influence in jointly owned firms, such companies are expected to perform better than those owned by a single public authority. Consistent with corporate governance – but not political economy – the empirical analysis suggests that dispersed municipal ownership impairs cost efficiency. In the Norwegian case of municipal refuse collection presented here, costs of dispersed ownership often outstrip gains from economies of scale. Use of jointly owned companies is not necessarily a proper response to efficiency problems inherent a fragmented local government structure.  相似文献   
165.
Using international data for 100 countries, we test two hypotheses derived from Bonger's Marxian theory of crime. The analyses support the hypothesis that the degree of capitalism significantly predicts homicide rates, but they fail to confirm that the de‐moralization of the population (loss of moral feelings for others) mediates the relationship between capitalism and homicide. Although capitalism is not the best predictor among those considered, overall, the results underline the importance of Bonger's ideas because both capitalism and corruption (our indicator of de‐moralization) show reasonably strong relationships with homicide rates and compete with other variables commonly used as predictors of international homicide rates. The results confirm the usefulness of attempting to subject Marxian ideas to positivist, quantitative tests, with an eye to integrating Marxian theories with other mainstream theories, such as institutional anomie theory.  相似文献   
166.
变性人在就业、教育、医疗保险等很多领域遭受歧视,本文分析变性人在这些领域遭受的歧视。对于如何解决歧视问题,需要各种政策和措施,尤其需要政府予以立法来保护变性人的权利。  相似文献   
167.
168.
169.
170.
The DNA commission of the International Society of Forensic Genetics (ISFG) was convened at the 21st congress of the International Society for Forensic Genetics held between 13 and 17 September in the Azores, Portugal. The purpose of the group was to agree on guidelines to encourage best practice that can be universally applied to assist with mixture interpretation. In addition the commission was tasked to provide guidance on low copy number (LCN) reporting. Our discussions have highlighted a significant need for continuing education and research into this area. We have attempted to present a consensus from experts but to be practical we do not claim to have conveyed a clear vision in every respect in this difficult subject. For this reason, we propose to allow a period of time for feedback and reflection by the scientific community. Then the DNA commission will meet again to consider further recommendations.  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