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   11139篇
  免费   138篇
  国内免费   10篇
教育   7553篇
科学研究   1341篇
各国文化   346篇
体育   786篇
综合类   5篇
文化理论   94篇
信息传播   1162篇
  2021年   99篇
  2020年   149篇
  2019年   213篇
  2018年   270篇
  2017年   279篇
  2016年   260篇
  2015年   175篇
  2014年   215篇
  2013年   2109篇
  2012年   228篇
  2011年   229篇
  2010年   198篇
  2009年   194篇
  2008年   268篇
  2007年   233篇
  2006年   204篇
  2005年   191篇
  2004年   210篇
  2003年   152篇
  2002年   142篇
  2001年   169篇
  2000年   204篇
  1999年   181篇
  1998年   103篇
  1997年   105篇
  1996年   97篇
  1995年   81篇
  1993年   104篇
  1992年   156篇
  1991年   164篇
  1990年   164篇
  1989年   176篇
  1988年   133篇
  1987年   142篇
  1986年   131篇
  1985年   168篇
  1984年   142篇
  1983年   133篇
  1982年   119篇
  1981年   100篇
  1980年   111篇
  1979年   160篇
  1978年   109篇
  1977年   101篇
  1976年   91篇
  1975年   84篇
  1974年   104篇
  1973年   91篇
  1971年   90篇
  1968年   88篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Editorial     
B. Sury 《Resonance》2018,23(7):723-725
  相似文献   
2.
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   
3.
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   
4.
5.
6.
7.
Previous research and first-hand experience suggest that a child with a disability can have a profound effect on family life. Although the need for sibling support has been acknowledged in legislation, the implications for non-disabled siblings remain unclear. In this article, Angie Naylor, lecturer in psychology, and Phil Prescott, senior lecturer in childhood and youth studies, both based at Edge Hill, review a number of key themes emerging from the literature on sibling support. They go on to report the findings from an in-depth study of one sibling support group. The work was carried out in partnership with Barnardo's in the north-west of England and involved setting up a sibling support group, in response to an analysis of local need, and evaluating its impact. This research indicates a clear need for further service provision to meet the needs of the siblings of disabled children who attended the scheme. Angie Naylor and Phil Prescott argue for a reinvigorated debate about the needs of such children and champion the importance of listening to children and valuing what they have to say. The results of this small-scale evaluation project have clear implications for future research and, potentially, for policy and practice.  相似文献   
8.
Gordon  R. S.  Franklin  K. L.  Baker  J.  Davies  B. 《Sports Engineering》2004,7(3):131-138
Sports Engineering - A Monark cycle ergometer is a device globally used in physiological studies to measure the work and energy levels of exercising humans. In this paper a rope-braked cycle...  相似文献   
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