全文获取类型
收费全文 | 52678篇 |
免费 | 742篇 |
国内免费 | 52篇 |
专业分类
教育 | 37238篇 |
科学研究 | 4694篇 |
各国文化 | 552篇 |
体育 | 4342篇 |
综合类 | 67篇 |
文化理论 | 422篇 |
信息传播 | 6157篇 |
出版年
2022年 | 326篇 |
2021年 | 507篇 |
2020年 | 825篇 |
2019年 | 1223篇 |
2018年 | 1612篇 |
2017年 | 1718篇 |
2016年 | 1566篇 |
2015年 | 935篇 |
2014年 | 1357篇 |
2013年 | 10069篇 |
2012年 | 1291篇 |
2011年 | 1396篇 |
2010年 | 1051篇 |
2009年 | 1073篇 |
2008年 | 1173篇 |
2007年 | 1056篇 |
2006年 | 980篇 |
2005年 | 907篇 |
2004年 | 1101篇 |
2003年 | 935篇 |
2002年 | 1012篇 |
2001年 | 960篇 |
2000年 | 887篇 |
1999年 | 821篇 |
1998年 | 457篇 |
1997年 | 489篇 |
1996年 | 568篇 |
1995年 | 524篇 |
1994年 | 467篇 |
1993年 | 467篇 |
1992年 | 697篇 |
1991年 | 660篇 |
1990年 | 689篇 |
1989年 | 707篇 |
1988年 | 645篇 |
1987年 | 642篇 |
1986年 | 591篇 |
1985年 | 738篇 |
1984年 | 587篇 |
1983年 | 567篇 |
1982年 | 490篇 |
1981年 | 450篇 |
1980年 | 399篇 |
1979年 | 589篇 |
1978年 | 465篇 |
1977年 | 428篇 |
1976年 | 395篇 |
1975年 | 329篇 |
1974年 | 352篇 |
1973年 | 323篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
13.
V. J. Hinton D. C. De Vivo R. Fee E. Goldstein Y. Stern 《Learning disabilities research & practice》2004,19(3):146-154
Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills. 相似文献
14.
15.
Clifford A. Lynch 《Archives and Museum Informatics》1997,11(1):5-13
Digital documents in the networked information environment fundamentally change the ways that visual materials can be used in education and scholarly discourse. These new uses raise questions about research library strategies with regard to digitized visual materials as a part of their collections, challenge assumptions underlying intellectual property rights for images and their scope, and offer ways in which visual literacy can become a more integral part of the common educational experience. 相似文献
16.
L A Colaianni 《Bulletin of the Medical Library Association》1992,80(1):1-8
The 1991 Janet Doe lecturer describes the vision held by the founders of the Medical Library Association of medical information being readily accessible to health professionals no matter how far they were located from major medical centers, and traces the pursuit of this vision to current outreach activities. 相似文献
17.
18.
Wendy M. Yen 《Educational Measurement》1997,16(3):5-15
How accurate is the reported percent of students’reaching standards at the school level? How are standard errors for these statistics computed? How do estimates vary with choice of generalizability model? 相似文献
19.
John M. Budd 《Publishing Research Quarterly》1991,7(2):27-37
In recent years university presses have undergone some significant changes, such as expansion of their scope to include materials
that may have appeal beyond the scholarly market. This article investigates, through the use of a survey of university libraries,
the acquisition of university press products by libraries. In general, recent years have been changes in the relationship
between university presses and libraries that have resulted in fewer items being purchased by the libraries. 相似文献
20.
DOCILE BODIES AND DISEMBODIED MINDS 总被引:1,自引:0,他引:1
Hilary E. Davis 《Educational theory》1996,46(4):525-543