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   10705篇
  免费   143篇
  国内免费   7篇
教育   7327篇
科学研究   1164篇
各国文化   346篇
体育   818篇
综合类   5篇
文化理论   83篇
信息传播   1112篇
  2022年   69篇
  2021年   117篇
  2020年   174篇
  2019年   230篇
  2018年   290篇
  2017年   328篇
  2016年   306篇
  2015年   196篇
  2014年   244篇
  2013年   1970篇
  2012年   256篇
  2011年   245篇
  2010年   224篇
  2009年   206篇
  2008年   285篇
  2007年   254篇
  2006年   218篇
  2005年   211篇
  2004年   224篇
  2003年   154篇
  2002年   149篇
  2001年   182篇
  2000年   212篇
  1999年   183篇
  1998年   107篇
  1997年   91篇
  1996年   85篇
  1995年   75篇
  1994年   77篇
  1993年   89篇
  1992年   146篇
  1991年   141篇
  1990年   152篇
  1989年   163篇
  1988年   120篇
  1987年   125篇
  1986年   117篇
  1985年   163篇
  1984年   128篇
  1983年   106篇
  1982年   98篇
  1981年   75篇
  1980年   83篇
  1979年   135篇
  1978年   86篇
  1977年   84篇
  1976年   82篇
  1974年   87篇
  1973年   73篇
  1971年   71篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
Editorial     
B. Sury 《Resonance》2018,23(7):723-725
  相似文献   
2.
William James (1919) characterises hypotheses as either live or dead. A hypothesis is live when it is taken into account as a ‘real possibility’. We follow James’ suggestion to not attribute intrinsic properties to hypotheses, but rather investigate how they came into being and look at the effects they generate. Expectations of digital technologies are a topic of vivid debate in the insurance industry. Before these expectations can become ‘live’, they have, in the first place, to be generated by market devices. We investigate how the reinsurance blogpost platform Open Minds functions as an ‘expectation generation device’ on the future of insurance markets. Combining Beckert’s work on the role of fictional expectations with the pragmatist turn in sociology of markets, we propose to study ‘expectation generation devices’, provoking expectations on economic markets. In our empirical analysis, we demonstrate the explicit fictional character of the Open Minds contributions, and analyse how a contained space of openness is generated to provoke expectations. We demonstrate how Open Minds can become live through circulation to other expectation generation sites in the insurance industry and beyond. We conclude by reflecting on the importance of expectation generation devices as a particular type of market devices.  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.
7.
8.
9.
10.
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   
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