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   22723篇
  免费   306篇
  国内免费   14篇
教育   16072篇
科学研究   2231篇
各国文化   410篇
体育   1780篇
综合类   11篇
文化理论   148篇
信息传播   2391篇
  2021年   188篇
  2020年   280篇
  2019年   448篇
  2018年   581篇
  2017年   618篇
  2016年   541篇
  2015年   342篇
  2014年   462篇
  2013年   4245篇
  2012年   499篇
  2011年   549篇
  2010年   392篇
  2009年   381篇
  2008年   552篇
  2007年   440篇
  2006年   482篇
  2005年   362篇
  2004年   377篇
  2003年   299篇
  2002年   333篇
  2001年   460篇
  2000年   449篇
  1999年   409篇
  1998年   219篇
  1997年   246篇
  1996年   256篇
  1995年   247篇
  1994年   205篇
  1993年   251篇
  1992年   359篇
  1991年   348篇
  1990年   346篇
  1989年   374篇
  1988年   355篇
  1987年   309篇
  1986年   313篇
  1985年   356篇
  1984年   293篇
  1983年   313篇
  1982年   229篇
  1981年   216篇
  1980年   204篇
  1979年   324篇
  1978年   236篇
  1977年   220篇
  1976年   207篇
  1975年   178篇
  1974年   198篇
  1973年   183篇
  1971年   156篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Research in Higher Education - State financial aid grant programs are commonly categorized as either need-based, merit-based, or both, but their initial eligibility requirements include many more...  相似文献   
2.
Editorial     
B. Sury 《Resonance》2018,23(7):723-725
  相似文献   
3.
ABSTRACT

This article offers a textual analysis and semiotic reading of the Rich Kids of Tehran's (RKOT’s) Instagram page. Contributing to scholarship on Iranian youth media practices, this article interrogates how the RKOT navigate urban and rural space to engage in everyday processes of resistance against global and local systemic oppression. Grounding their visual representations on Instagram in historical and cultural context, the author questions how and when quotidian actions are transformed into political transgressions when posted on social media. This article emphasizes the RKOT's agency in shaping their brand by analyzing representations of gender performance, intertextuality, and national identity on Instagram.  相似文献   
4.
In the IR field it is clear that the value of a system depends on the cost and benefit profiles of its users. It would seem obvious that different users would prefer different systems. In the TREC-9 filtering track, systems are evaluated by a utility measure specifying a given cost and benefit. However, in the study of decision systems it is known that, in some cases, one system may be unconditionally better than another. In this paper we employ a decision theoretic approach to find conditions under which an Information Filtering (IF) system is unconditionally superior to another for all users regardless of their cost and benefit profiles.It is well known that if two IF systems have equal precision the system with better recall will be preferred by all users. Similarly, with equal recall, better precision is universally preferred. We confirm these known results and discover an unexpected dominance relation in which a system with lower recall will be universally preferred provided its precision is sufficiently higher.  相似文献   
5.
6.
This article describes the Engineering Professors' Conference (EPC) approach to quality assurance for Higher Education Institutions, which is currently the only formalized alternative to British Standard 5750 'Quality Systems'. The EPC approach is based on principles of quality assurance and Total Quality Management which have been developed in industry. These ideas are briefly outlined, and an opinion expressed on the interpretation and application of BSS7S0 for HE. The EPC model is explained, illustrated with example elements taken from the EPC Specification and Guidelines for Quality Assurance in Higher Education. A top-down approach to the development of an institutional quality system is described, based on a quality policy statement. Areas of activity which have an important impact on the quality of education are identified, emphasising the quality assurance requirements of academic departments. Supporting and administrative quality system requirements are also described, as these also play an important role in the quality of education. Formal quality procedures and documentation in key areas are proposed.  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