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   18882篇
  免费   288篇
  国内免费   26篇
教育   13324篇
科学研究   1872篇
各国文化   222篇
体育   1624篇
综合类   10篇
文化理论   205篇
信息传播   1939篇
  2021年   205篇
  2020年   341篇
  2019年   458篇
  2018年   579篇
  2017年   595篇
  2016年   586篇
  2015年   385篇
  2014年   483篇
  2013年   3568篇
  2012年   461篇
  2011年   500篇
  2010年   426篇
  2009年   367篇
  2008年   446篇
  2007年   410篇
  2006年   378篇
  2005年   363篇
  2004年   361篇
  2003年   341篇
  2002年   301篇
  2001年   547篇
  2000年   392篇
  1999年   320篇
  1998年   182篇
  1997年   231篇
  1996年   204篇
  1995年   176篇
  1994年   201篇
  1993年   155篇
  1992年   239篇
  1991年   230篇
  1990年   235篇
  1989年   226篇
  1988年   197篇
  1987年   191篇
  1986年   204篇
  1985年   247篇
  1984年   205篇
  1983年   178篇
  1982年   162篇
  1981年   145篇
  1980年   141篇
  1979年   191篇
  1978年   157篇
  1977年   128篇
  1976年   100篇
  1975年   120篇
  1974年   104篇
  1973年   110篇
  1971年   91篇
排序方式: 共有10000条查询结果,搜索用时 203 毫秒
991.
Educational researchers commonly use the rule of thumb of “design effect smaller than 2” as the justification of not accounting for the multilevel or clustered structure in their data. The rule, however, has not yet been systematically studied in previous research. In the present study, we generated data from three different models (which differ in the location of the clustering effect). With a 3 (design effect) × 5 (cluster size) × 4 (number of clusters) Monte Carlo simulation study we found that the rule should not be applied when researchers: (a) are interested in the effects of higher-level predictors, or (b) have a cluster size less than 10. Implications of the findings and limitations of the study are discussed.  相似文献   
992.
993.
994.
Children need a balanced set of cognitive, social and emotional capabilities to adapt to today's demanding, changing and unpredictable world. OECD countries and partner economies recognise the importance on the holistic development of individuals. However, there are big gaps between stakeholders' knowledge, expectations and practices on how to foster such skills. This paper presents evidence on the importance of social and emotional skills; on how policy makers and schools are currently enhancing and monitoring such skills; and, on the existing gaps between knowledge, expectations and practices to mobilise these skills. The paper concludes by pointing ways in which education stakeholders can do more to better develop and mobilise the skills that drive individual's well-being and social progress. The paper draws on findings and frameworks that are being published in a full OECD report entitled ‘Skills for Social Progress: the Power of Social and Emotional Skills’ in the first half of 2015.  相似文献   
995.
Social‐emotional health influences youth developmental trajectories and there is growing interest among educators to measure the social‐emotional health of the students they serve. This study replicated the psychometric characteristics of the Social Emotional Health Survey (SEHS) with a diverse sample of high school students (Grades 9–12; N = 14,171), and determined whether the factor structure was invariant across sociocultural and gender groups. A confirmatory factor analysis (CFA) tested the fit of the previously known factor structure, and then structural equation modeling was used to test invariance across sociocultural and gender groups through multigroup CFAs. Results supported the SEHS measurement model, with full invariance of the SEHS higher‐order structure for all five sociocultural groups. There were no moderate effect size or higher group differences on the overall index for sociocultural or gender groups, which lends support to the eventual development of common norms and universal interpretation guidelines.  相似文献   
996.
The present study explored the environmental and genetic etiologies of the longitudinal relations between prereading skills and reading and spelling. Twin pairs (n = 489) were assessed before kindergarten (M = 4.9 years), post‐first grade (M = 7.4 years), and post‐fourth grade (M = 10.4 years). Genetic influences on five prereading skills (print knowledge, rapid naming, phonological awareness, vocabulary, and verbal memory) were primarily responsible for relations with word reading and spelling. However, relations with post‐fourth‐grade reading comprehension were due to both genetic and shared environmental influences. Genetic and shared environmental influences that were common among the prereading variables covaried with reading and spelling, as did genetic influences unique to verbal memory (only post‐fourth‐grade comprehension), print knowledge, and rapid naming.  相似文献   
997.
998.
999.
Typical assessment systems often measure isolated ideas rather than the coherent understanding valued in current science classrooms. Such assessments may motivate students to memorize, rather than to use new ideas to solve complex problems. To meet the requirements of the Next Generation Science Standards, instruction needs to emphasize sustained investigations, and assessments need to create a detailed picture of students’ conceptual understanding and reasoning processes.

This article describes the design process and potential for automated scoring of 2 forms of inquiry assessment: Energy Stories and MySystem. To design these assessments, we formed a partnership of teachers, discipline experts, researchers, technologists, and psychometricians to align curriculum, assessments, and rubrics. We illustrate how these items document middle school students’ reasoning about energy flow in life science. We used evidence from review by science teachers and experts in the discipline; classroom experiments; and psychometric analysis to validate the assessments, rubrics, and automated scoring.  相似文献   
1000.
Workplaces are settings where power, knowledge and self are brought together in a complex social environment which includes various forms of struggle related to identity, agency, socio-cultural norms, political structures and functional practices. The purpose of this article is to uncover how formal and informal work-related learning processes influence the identity transformation of workers with low literacy and essential skills. Drawing on two recent Canadian data bases which serve as cases in this study, the position taken by the authors is that the organisational context can both facilitate and impede worker subjectivity. Various conditions, approaches to learning and training pathways are examined as they contribute to social cognitive and transformative learning theories.  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