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   16739篇
  免费   236篇
  国内免费   14篇
教育   11701篇
科学研究   2024篇
各国文化   186篇
体育   1160篇
综合类   19篇
文化理论   202篇
信息传播   1697篇
  2022年   107篇
  2021年   152篇
  2020年   229篇
  2019年   311篇
  2018年   455篇
  2017年   477篇
  2016年   450篇
  2015年   289篇
  2014年   409篇
  2013年   3073篇
  2012年   365篇
  2011年   358篇
  2010年   342篇
  2009年   319篇
  2008年   334篇
  2007年   332篇
  2006年   329篇
  2005年   270篇
  2004年   300篇
  2003年   265篇
  2002年   279篇
  2001年   361篇
  2000年   390篇
  1999年   295篇
  1998年   184篇
  1997年   216篇
  1996年   216篇
  1995年   168篇
  1994年   180篇
  1993年   159篇
  1992年   252篇
  1991年   233篇
  1990年   254篇
  1989年   249篇
  1988年   222篇
  1987年   233篇
  1986年   214篇
  1985年   261篇
  1984年   187篇
  1983年   171篇
  1982年   183篇
  1981年   142篇
  1980年   157篇
  1979年   218篇
  1978年   162篇
  1977年   138篇
  1976年   123篇
  1975年   126篇
  1974年   119篇
  1973年   116篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
102.
ABSTRACT

Recently, there has been much controversy over the International Association of Athletics Federation (IAAF) regulations regarding eligibility to compete and natural testosterone levels in female athletes. Much interest lies in the analysis of Caster Semenya's extraordinary performance. The objective of this work were, a) Complete an analysis of Caster Semenya's results during the 800m finals and b) search for existing similar performances by other female athletes. We analysed the results of the finals of all IAAF World Championships and Olympic Games from 1984–2016, including the 800m results of the Diamond Leagues 2016–2018. Exponential curves were fit to the data to characterise and predict performance for each event. Caster Semenya's finishing times before her ineligibility to compete and after the suspension of the IAAF hyperandrogenism regulation were found to be 1.24% and 1.49%, respectively, faster than the characteristic performance of the elite-standard in the women’s 800m final. Other female athletes, with finishing times faster than the ones predicted by the characteristic curves were also discovered. The percentage difference in performance between Caster Semenya and the other participants did not reach 3% in the 800m event. No conclusions can be drawn regarding extraordinary results ever performed during the 100m, 200m or 400m finals.  相似文献   
103.
104.
The present article explores the utility and feasibility of treatment validation consultation (TVC). Although evidence exists for behavioral consultation, few findings have been reported for TVC. TVC is based on core components of behavioral consultation, but has several unique characteristics. In this article, TVC is situated within the behavioral consultation literature; one case study is used to demonstrate TVC’s utility and feasibility; and considerations for future TVC research are explored.  相似文献   
105.
In this systematic review of literature that spans 1975–2015, integrated reading and writing interventions for students with learning disabilities (LD) or students with academic difficulties were evaluated to understand the extant research, identify encouraging practices, and guide future research. Ten studies met inclusion criteria and each study was evaluated according to the relevant What Works Clearinghouse (WWC) design standards. Eight of the 10 investigations were conducted with students in grades 4–8. While only 4 of the 10 studies met WWC design with or without reservations, results from these studies are encouraging. Study findings suggest several areas for immediate future research relating to methodological and treatment variables and considerations for classroom instruction in order to respond to advanced expectations for the successful integration of reading and writing across subjects. In addition to employing stronger experimental designs and additional replications of encouraging studies, future research should explore the utility of integrated reading and writing interventions with secondary students with who have academic difficulties.  相似文献   
106.
With the recent adoption of the Common Core standards in many states, there is a need for quality information about textbook alignment to standards. While there are many existing content analysis procedures, these generally have little, if any, validity or reliability evidence. One exception is the Surveys of Enacted Curriculum (SEC), which has been widely used to analyze the alignment among standards, assessments, and teachers’ instruction. However, the SEC can be time‐consuming and expensive when used for this purpose. This study extends the SEC to the analysis of entire mathematics textbooks and investigates whether the results of SEC alignment analyses are affected if the content analysis procedure is simplified. The results indicate that analyzing only every fifth item produces nearly identical alignment results with no effect on the reliability of content analyses.  相似文献   
107.
The authors assessed the influences of several risk factors—self‐esteem, history of unwanted sexual contact (USC), depression, and sorority membership—on eating‐related and weight‐related attitudes and behaviors. Findings provide support for the roles of self‐esteem, depression, and USC on restricting attitudes. According to the authors' model, these independent variables predicted restricting attitudes that then predicted restricting behaviors. Implications for preventive interventions and the study's limitations are discussed.  相似文献   
108.
109.
This article was delivered as the plenary address at the Massachusetts Association for Bilingual Education Annual Conference, November, 1986. The style of the speech has been preserved.  相似文献   
110.
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