全文获取类型
收费全文 | 1547篇 |
免费 | 26篇 |
国内免费 | 2篇 |
专业分类
教育 | 1184篇 |
科学研究 | 97篇 |
各国文化 | 19篇 |
体育 | 115篇 |
综合类 | 1篇 |
文化理论 | 10篇 |
信息传播 | 149篇 |
出版年
2023年 | 6篇 |
2022年 | 14篇 |
2021年 | 21篇 |
2020年 | 31篇 |
2019年 | 45篇 |
2018年 | 73篇 |
2017年 | 69篇 |
2016年 | 69篇 |
2015年 | 32篇 |
2014年 | 44篇 |
2013年 | 320篇 |
2012年 | 38篇 |
2011年 | 42篇 |
2010年 | 31篇 |
2009年 | 38篇 |
2008年 | 36篇 |
2007年 | 39篇 |
2006年 | 38篇 |
2005年 | 23篇 |
2004年 | 29篇 |
2003年 | 25篇 |
2002年 | 21篇 |
2001年 | 17篇 |
2000年 | 31篇 |
1999年 | 21篇 |
1998年 | 15篇 |
1997年 | 17篇 |
1996年 | 21篇 |
1995年 | 20篇 |
1994年 | 22篇 |
1993年 | 18篇 |
1992年 | 21篇 |
1991年 | 18篇 |
1990年 | 17篇 |
1989年 | 16篇 |
1988年 | 10篇 |
1987年 | 12篇 |
1986年 | 8篇 |
1985年 | 13篇 |
1984年 | 15篇 |
1983年 | 14篇 |
1982年 | 12篇 |
1981年 | 16篇 |
1980年 | 10篇 |
1978年 | 9篇 |
1976年 | 9篇 |
1975年 | 6篇 |
1972年 | 5篇 |
1927年 | 6篇 |
1923年 | 6篇 |
排序方式: 共有1575条查询结果,搜索用时 15 毫秒
1.
Children with spelling deficits demonstrate significant difficulty using inflectional morphology in their writing. This study investigated whether phonological deficits account for these pronounced difficulties or if they are more accurately explained by limitations in morphological or orthographic awareness. Twenty–six 11—13–year–old children with spelling deficits, 31 younger spelling–level–matched children, and 31 age–matched children were asked to spell a series of verbs with past tense and progressive markers in dictated sentences and in list form. Performance on spelling tasks was compared to performance on phonological, morphological, and orthographic awareness tasks. Results suggest that children with spelling deficits have significant difficulty including inflections as well as spelling inflections and base words. Difficulty was most pronounced in a sentence context. Ability to spell inflectional forms was related to variation in morphological awareness in children with spelling deficits and to variation in orthographic awareness in spelling–level–matched children. 相似文献
2.
3.
The present study examined three hypotheses regarding the consequences of early brain damage for academic achievement: First, early brain insults will have a negative impact on achievement, even in children with normal intelligence. Second, underachievement in these children will be at least partially independent of IQ (i.e., not fully accounted for by a lowering of IQ within the average range). Third, normally intelligent children with histories of brain insult will also manifest selective cognitive dysfunctions. To test these hypotheses, we compared two groups of children who had recovered from Haemophilus influenzae type b meningitis. The "complicated" group consisted of children who, as a consequence of having sustained neurologic complications during their illness, were more likely to have had brain insults. Children in the "uncomplicated" group did not have complications with their illness and were regarded as having escaped significant central nervous system (CNS) pathology. Only children with normal hearing and a prorated Full Scale IQ of at least 80 (WISC-R) were considered. Group differences on the Wide Range Achievement Test-Revised were consistent with the first two hypotheses. Although the two groups had similar Verbal IQs, the complicated group also had a lower mean Performance IQ and performed less well on perceptually demanding neuropsychological tasks. Findings suggest that learning disabilities may have selective, brain-related cognitive antecedents; but they challenge the practice of using IQ criteria for clinical diagnosis. 相似文献
4.
This paper discusses the use of systems development research methods in the context of ongoing research that is formulating
a specification for a metadata schema registry. The paper extrapolates from this discussion how such methods can be utilized
in archival systems research and how such an approach differs from commercial systems engineering. In particular, the paper
suggests that adopting a user-centred prototyping approach in a research context allows for exploration of the interplay between
theory and practice, advancing the practice, while also offering new insights into theoretical concepts. It argues that these
research methods are of increasing interest to the archival profession in order to conceptualise and realise the tools necessary
to support recordkeeping and archival processes in digital environments. 相似文献
5.
Jie Zhuang Yi Zhu Xiaodi Yan Elizabeth Bogdan-Lovis Joanne Goldbort 《Journal of Applied Communication Research》2018,46(4):491-508
This study assessed the impact of coworker support on lactating mothers’ breastfeeding self-efficacy after maternity leave. A cross-sectional survey of 1000 working adults assessed effects of perception of fairness, coworkers’ support for breastfeeding colleagues, and ick response on willingness to help mothers needing breaks to pump breastmilk at work. The study also examined how coworker support affected mothers’ self-efficacy to continue breastfeeding. One out of four coworkers showed moderate to strong stigma, saw breaks to pump breastmilk as unfair, and showed less intention to help new mothers. These results suggest that while the majority of coworkers are generally supportive, lactating women are likely to encounter disapproving coworkers who may discourage them from continuing to breastfeed. The data showed that the majority of organizations included in this study have only passively fostered mother-friendly workplaces and could do more to encourage employees to be supportive of lactating colleagues. 相似文献
6.
7.
8.
William J. Therrien Jonte C. Taylor John L. Hosp Erica R. Kaldenberg Jay Gorsh 《Learning disabilities research & practice》2011,26(4):188-203
Although science has received much attention as a political and educational initiative, students with learning disabilities (LD) perform significantly lower than their nondisabled peers. This meta‐analysis evaluates the effectiveness of instructional strategies in science for students with LD. Twelve studies were examined, summarized, and grouped according to the type of strategy implemented. Effect sizes (ES) were calculated for each study. Across all studies, a mean ES of .78 was obtained, indicating a moderate positive effect on students with LD science achievement. Findings also align with past reviews of inquiry‐based instruction for students with special needs, indicating that students with LD need structure within an inquiry science approach in order to be successful. Additionally, results suggest that mnemonic instruction is highly effective at increasing learning disabled students' acquisition and retention of science facts. 相似文献
9.
10.
Arlene G. Taylor 《Cataloging & classification quarterly》2016,54(8):521-536
In this interview, conducted via email during August 2016, Dr. Arlene G. Taylor discusses her career as a cataloger, professor of cataloging and classification, and her work in professional associations. Topics include her early cataloging and teaching experiences, changes in both cataloging practice and the teaching of cataloging, subject analysis, and “aboutness” as compared with form/genre access, professional experiences outside the United States, and the future of MLIS programs. 相似文献