全文获取类型
收费全文 | 4794篇 |
免费 | 435篇 |
国内免费 | 3篇 |
专业分类
教育 | 4396篇 |
科学研究 | 72篇 |
各国文化 | 167篇 |
体育 | 99篇 |
文化理论 | 20篇 |
信息传播 | 478篇 |
出版年
2023年 | 6篇 |
2021年 | 52篇 |
2020年 | 81篇 |
2019年 | 147篇 |
2018年 | 176篇 |
2017年 | 211篇 |
2016年 | 155篇 |
2015年 | 204篇 |
2014年 | 223篇 |
2013年 | 1377篇 |
2012年 | 174篇 |
2011年 | 206篇 |
2010年 | 195篇 |
2009年 | 168篇 |
2008年 | 195篇 |
2007年 | 145篇 |
2006年 | 134篇 |
2005年 | 118篇 |
2004年 | 94篇 |
2003年 | 57篇 |
2002年 | 74篇 |
2001年 | 58篇 |
2000年 | 58篇 |
1999年 | 65篇 |
1998年 | 48篇 |
1997年 | 44篇 |
1996年 | 50篇 |
1995年 | 58篇 |
1994年 | 48篇 |
1993年 | 61篇 |
1992年 | 44篇 |
1991年 | 39篇 |
1990年 | 55篇 |
1989年 | 33篇 |
1988年 | 27篇 |
1987年 | 37篇 |
1986年 | 33篇 |
1985年 | 34篇 |
1984年 | 22篇 |
1983年 | 26篇 |
1982年 | 25篇 |
1981年 | 14篇 |
1980年 | 10篇 |
1979年 | 12篇 |
1978年 | 19篇 |
1977年 | 16篇 |
1976年 | 6篇 |
1975年 | 12篇 |
1974年 | 15篇 |
1973年 | 15篇 |
排序方式: 共有5232条查询结果,搜索用时 31 毫秒
1.
2.
3.
Hana Tur‐Kaspa 《Learning disabilities research & practice》2004,19(1):3-11
The study examined the social‐information‐processing skills of kindergarten children with developmental learning disabilities (LD) utilizing Crick and Dodge's (1994) model of children's social adjustment as a theoretical framework. Participants consisted of 20 kindergarten children with developmental LD who attended three integrated kindergartens and 20 children without developmental LD from the same kindergartens. Participants were assessed on social‐information‐processing skills, feelings of loneliness, sense of coherence, and teachers' ratings of behavioral problems and positive resources. The results indicated that girls with developmental LD performed significantly lower on two information‐processing steps—the response decision and the enactment steps—than did girls without LD. Such differences were not found for boys. The results also showed that the social‐information‐processing skills of children with developmental LD were correlated with teachers' ratings. 相似文献
4.
5.
6.
Jane Harrison 《Health information and libraries journal》1997,14(1):33-42
Thepractice of evidence-based health care requires that information on methodology be identifiedfrom databases such as MEDLINE. Up until this year there have been no designated medicalsubject headings (MeSH) for evidence-based health care. ‘EVIDENCE-BASEDMEDICINE’ appears as a MeSH term from 1997. The absence of designated MeSH forthis concept prior to 1997 provides a challenge to the searcher. This paper describes the creationof a MEDLINE search strategy to retrieve articles on the methods of evidence-based health carepublished prior to the introduction of the new term, where an optimal combination of free-textand MeSH terms is required to identify relevant material. The study examines both free-text andsubject heading searching and attempts an optimal balance of sensitivity and specificity. It beginsby examining separate free-text and subject heading searches. Sensitivity of the subject headingsearch was 33% and specificity 80%, while the free-text search produced asensitivity of 50% and a specificity of 67%. The final strategy, combining bothapproaches, was more successful with sensitivity reaching between 82 and 90% andspecificity 83%. It is therefore possible to devise a search strategy to retrieve articles on themethods of evidence-based health care with relatively successful rates of sensitivity andspecificity. The limitations of MEDLINE, however, necessitate the use of additional approachesin identifying articles on the methods of evidence-based health care. 相似文献
7.
8.
9.
Athina Kolia‐Dermitzaki 《Al-Masaq: Islam & the Medieval Mediterranean》1994,7(1):267-278
Ducellier, A., Kaplan, M., Martin, Bernadette, avec la collaboration de Françoise Micheau. Le Moyen Âge en Orient. Byzance et l'Islam. Des Barbares aux Ottomans. Paris: Hachette Histoire Université, 1990. 相似文献
10.