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   27812篇
  免费   477篇
  国内免费   115篇
教育   20015篇
科学研究   2687篇
各国文化   221篇
体育   2061篇
综合类   347篇
文化理论   219篇
信息传播   2854篇
  2022年   206篇
  2021年   395篇
  2020年   513篇
  2019年   616篇
  2018年   798篇
  2017年   906篇
  2016年   838篇
  2015年   673篇
  2014年   959篇
  2013年   4825篇
  2012年   1003篇
  2011年   1142篇
  2010年   915篇
  2009年   821篇
  2008年   887篇
  2007年   855篇
  2006年   749篇
  2005年   601篇
  2004年   498篇
  2003年   440篇
  2002年   462篇
  2001年   487篇
  2000年   433篇
  1999年   416篇
  1998年   222篇
  1997年   244篇
  1996年   264篇
  1995年   220篇
  1994年   220篇
  1993年   195篇
  1992年   304篇
  1991年   302篇
  1990年   333篇
  1989年   313篇
  1988年   295篇
  1987年   249篇
  1986年   257篇
  1985年   324篇
  1984年   267篇
  1983年   256篇
  1982年   196篇
  1981年   208篇
  1980年   176篇
  1979年   244篇
  1978年   214篇
  1977年   197篇
  1976年   160篇
  1975年   129篇
  1974年   121篇
  1973年   135篇
排序方式: 共有10000条查询结果,搜索用时 656 毫秒
151.
152.
153.
154.
155.
IntroductionWhile early commenting on studies is seen as one of the advantages of preprints, the type of such comments, and the people who post them, have not been systematically explored.Materials and methodsWe analysed comments posted between 21 May 2015 and 9 September 2019 for 1983 bioRxiv preprints that received only one comment on the bioRxiv website. The comment types were classified by three coders independently, with all differences resolved by consensus.ResultsOur analysis showed that 69% of comments were posted by non-authors (N = 1366), and 31% by the preprints’ authors themselves (N = 617). Twelve percent of non-author comments (N = 168) were full review reports traditionally found during journal review, while the rest most commonly contained praises (N = 577, 42%), suggestions (N = 399, 29%), or criticisms (N = 226, 17%). Authors’ comments most commonly contained publication status updates (N = 354, 57%), additional study information (N = 158, 26%), or solicited feedback for the preprints (N = 65, 11%).ConclusionsOur results indicate that comments posted for bioRxiv preprints may have potential benefits for both the public and the scholarly community. Further research is needed to measure the direct impact of these comments on comments made by journal peer reviewers, subsequent preprint versions or journal publications.  相似文献   
156.
Peer harassment is a major social problem affecting children and adolescents internationally. Much research has focused on student‐to‐student harassment from either an individual or a multilevel perspective. There is a paucity of multilevel research on students’ relationships with the classroom teacher. The purpose of this study was to use a socioecological perspective to examine the relationships between individual student‐level characteristics, problematic teacher–student relationships, and student‐reported peer harassment. A total of 1,864 children (50.7% female) aged 8 to 13 years (M = 9.82, SD = 1.24), nested in 27 schools (58.2% public) in Spain, participated in the study. Ninety‐four homeroom teachers reported on teacher–student relationships, and students completed self‐report measures related to peer harassment and teacher–student relationships. Multilevel models showed that relationships between students and teachers exerted a varying degree of influence on classroom levels of peer harassment. Specifically, student‐reported teacher support was associated with diminished student‐reported peer victimization, whereas direct and indirect student‐reported teacher‐to‐student aggression was associated with increased peer victimization. Additionally, student‐reported student‐to‐teacher aggression and teacher‐to‐student aggression were associated with increased student‐reported peer aggression. Teacher‐reported variables at the classroom level, however, contributed little to student‐reported outcomes. Results are discussed in the context of future research on relationships between teachers and students.  相似文献   
157.
158.
159.
赋权少数族裔学生:一个干预框架   总被引:1,自引:0,他引:1  
吉姆康明斯提出了一个理论框架来分析少数族裔学生学业失败的原因,以及之前曾尝试过的,诸如补偿教育和双语教育这样的教育改革相对缺乏成功的原因。这些尝试之所以没有成功是因为教育者和少数族裔学生之间的关系以及学校和少数族裔社区的关系都没有得到显著的改变。研究旨在为教育者提供一些改变这些关系,从而赋权学生,使得学生在学业上取得成功的方法。  相似文献   
160.
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