全文获取类型
收费全文 | 4946篇 |
免费 | 105篇 |
国内免费 | 2篇 |
专业分类
教育 | 4028篇 |
科学研究 | 119篇 |
各国文化 | 67篇 |
体育 | 170篇 |
综合类 | 1篇 |
文化理论 | 22篇 |
信息传播 | 646篇 |
出版年
2023年 | 21篇 |
2022年 | 31篇 |
2021年 | 57篇 |
2020年 | 101篇 |
2019年 | 143篇 |
2018年 | 197篇 |
2017年 | 219篇 |
2016年 | 184篇 |
2015年 | 127篇 |
2014年 | 161篇 |
2013年 | 1227篇 |
2012年 | 131篇 |
2011年 | 145篇 |
2010年 | 123篇 |
2009年 | 132篇 |
2008年 | 140篇 |
2007年 | 134篇 |
2006年 | 137篇 |
2005年 | 121篇 |
2004年 | 125篇 |
2003年 | 79篇 |
2002年 | 97篇 |
2001年 | 71篇 |
2000年 | 61篇 |
1999年 | 65篇 |
1998年 | 58篇 |
1997年 | 74篇 |
1996年 | 68篇 |
1995年 | 54篇 |
1994年 | 62篇 |
1993年 | 48篇 |
1992年 | 46篇 |
1991年 | 39篇 |
1990年 | 38篇 |
1989年 | 29篇 |
1988年 | 27篇 |
1987年 | 25篇 |
1986年 | 36篇 |
1985年 | 40篇 |
1984年 | 31篇 |
1983年 | 30篇 |
1982年 | 30篇 |
1981年 | 21篇 |
1980年 | 28篇 |
1979年 | 32篇 |
1978年 | 27篇 |
1977年 | 30篇 |
1976年 | 23篇 |
1975年 | 15篇 |
1974年 | 15篇 |
排序方式: 共有5053条查询结果,搜索用时 15 毫秒
81.
Mary Elizabeth McCormac 《Journal of Career Development》1988,14(3):196-204
Conclusion The ever increasing demands on guidance and counseling programs has added new responsibilities to the tasks of the counselor specifically in the area of career development. Along with this increase in responsibility, the issue of accountability has been added. Career information delivery systems assist the counselor in meeting the need for accurate, relevant occupational and educational information that can be disseminated in a timely efficient manner. Therefore, CIDS should be a vital part of all comprehensive career guidance and counseling programs.Mary Elizabeth McCormac is an Occupational Information System Specialist, National Occupational Information Coordinating Committee, Washington, D.C. 相似文献
82.
In order to determine the role of time limits on both test performance and test validity, we asked approximately 300 volunteers–prospective graduate students–to each write two essays–one in a 40-minute time period and the other in 60 minutes. Analyses revealed that, on average, test performance was significantly better when examinees were given 60 minutes instead of 40. However, there was no interaction between test-taking style (fast vs. slow) and time limits. 'That is', examinees who described themselves as slow writers/test takers did not benefit any more (or any less) from generous time limits than did their quicker counterparts. In addition, there was no detectable effect of different time limits on the meaning of essay scores, as suggested by their relationship to several nontest indicators of writing ability. 相似文献
83.
84.
There appear to be unconditioned affective reactions to the four basic tastes: liking for sweet and salt and disliking for sour and bitter. We attempted to modify these reactions by pairing the tastes with calories and with sweeter tastes. Differing sucrose concentrations were ineffective in reversing the preference for salt over citric acid or for saccharin over quinine. We could, however, reverse the preference for salt over citric acid, producing an actual preference for sour over salt, by using sucrose and saccharin as the reinforcers. The initial reactions to tastes could also be modified by reducing the initial difference in affect produced by the tastes through mixing both tastes with sucrose. 相似文献
85.
Cantlon JF Davis SW Libertus ME Kahane J Brannon EM Pelphrey KA 《Learning and individual differences》2011,21(6):672-680
In an effort to understand the role of interhemispheric transfer in numerical development, we investigated the relationship between children's developing knowledge of numbers and the integrity of their white matter connections between the cerebral hemispheres (the corpus callosum). We used diffusion tensor imaging (DTI) tractography analyses to test the link between the development of the corpus callosum and performance on symbolic and non-symbolic numerical judgment tasks. We were especially interested in the interhemispheric connections of parietal cortex in 6-year-old children, because regions of parietal cortex have been implicated in the development of numerical skills by several prior studies. Our results revealed significant structural differences between children and adults in the fibers of the corpus callosum connecting the left and right parietal lobes. Importantly, these structural differences were predictive of individual differences among children in performance on numerical judgment tasks: children with poor numerical performance relative to their peers exhibited reduced white matter coherence in the fibers passing through the isthmus of the corpus callosum, which connects the parietal hemispheres. 相似文献
86.
Pascale Marguerite Josiane Engel de Abreu Susan Elizabeth Gathercole Romain Martin 《Learning and individual differences》2011,21(5):569-574
This study investigates the relationship between working memory and language in young children growing up in a multilingual environment. The aim is to explore whether mechanisms of short-term storage and cognitive control hold similar relations to emerging language skills and to investigate if potential links are mediated by related cognitive abilities. A sample of 119 Luxembourgish 6-year-olds completed several assessments of working memory (complex and simple span), native and foreign vocabulary, syntax, reading, rhyme awareness, and fluid intelligence. Results showed that short-term storage and cognitive control manifested differential links with developing language abilities: Whereas verbal short-term storage was specifically linked to vocabulary; cognitive control manifested unique and robust links with syntax and early reading development. The study suggests that in young children the working memory system is composed of separate but interacting components corresponding to short-term storage and cognitive control that can be distinguished by the roles they play in supporting language acquisition. 相似文献
87.
Malloy ME 《The Journal of perinatal education》2011,20(1):8-13
A doula and expectant mother's view of birth is forever changed when she sees a midwife simply place a newly born child below her mother at the moment of birth. The pause that the mother experiences in this moment as she studies, touches, and claims her child prompts the author to reflect in this guest editorial on ways we might be disturbing the natural sequence of birth as we deliver babies directly to their mothers' chests. 相似文献
88.
David Devraj Kumar P. V. Thomas John D. Morris Karen M. Tobias Mary Baker Trudy Jermanovich 《Journal of Science Education and Technology》2011,20(2):116-115
This study examined the impact of computer simulation and supported science learning on a teacher’s understanding and conceptual
knowledge of current electricity. Pre/Post tests were used to measure the teachers’ concept attainment. Overall, there was
a significant and large knowledge difference effect from Pre to Post test. Two interesting interactions were observed during
the data analysis. The first was the difference between Elementary and Secondary teachers. Both groups had significant gains,
with large effect sizes, but the Elementary teachers (Pre-Mean = 3.70, Post-Mean = 7.51) started lower and ended higher exhibiting
a significantly larger gain than the Secondary teachers (Pre-Mean = 4.96, Post-Mean = 6.71). The second interaction was the
impact of gender. Both groups showed significant gains, with large effect sizes, but females (Pre-Mean = 3.90, Post-Mean = 7.21)
gained significantly more than males (Pre-Mean = 5.13, Post-Mean = 7.01). These results confirm that computer simulation supported
science learning can have a positive effect on concept attainment in teachers. 相似文献
89.
Emily Worthington Susan Maude Kere Hughes Gayle Luze Carla Peterson Mary Jane Brotherson Katherine Bruna Molly Luchtel 《Early Childhood Education Journal》2011,39(1):51-60
The dramatic growth in the number of children learning English as a second language in our country has led to a corresponding
increase in the need to understand how teachers and schools can effectively teach children who are learning English as a second
language. Many teachers report not feeling prepared to meet the needs of these children (National Center for Education Statistics,
Teacher preparation and professional development: 2000. , 2002). The current study used focus group interviews to examine how Head Start teachers in one program addressed the special learning
needs of children learning English in their classrooms. Key challenges involved communicating with children and their families
in their home language. Teachers used other staff, parents, and children in the classroom to interpret. Strategies involved
visual aids, pictures, gestures, and a welcoming classroom environment. Resources used by teachers were professional development
and language skills of other staff. However, available resources were often underutilized and limited for teachers to use
in meeting the challenges the teachers faced in the classroom. Suggestions are presented for overcoming the challenges and
limited resources encountered by teachers, such as changes in preservice and inservice training opportunities, and second
language learning opportunities for teachers. Further implications for training and research are discussed. 相似文献
90.
Yannis Hadzigeorgiou Barbara Prevezanou Mary Kabouropoulou Manos Konsolas 《Environmental Education Research》2011,17(4):519-536
This paper reports on a study undertaken with the primary aim of investigating the effect of the storytelling teaching approach on kindergarten children's retention of ideas about the importance of trees. The study also assessed the effect of storytelling on children's intention to participate in a tree planting activity that they had to select from a list of activities. The story that was created included such elements as binary opposites, mental images, mystery, and wonder, according to Kieran Egan's theory. The study utilized a two‐group design, was conducted in three phases (pre‐test, intervention, and post‐test), lasted 11 weeks, and its results provide evidence of the effectiveness of the storytelling approach when compared with the traditional method of expository teaching complemented with visual images (pictures) of trees and their importance to human beings. The pedagogical appropriateness of the story, which was based upon the binary pair of opposites ‘security–insecurity’, is also discussed in the paper. 相似文献