全文获取类型
收费全文 | 2209篇 |
免费 | 41篇 |
专业分类
教育 | 1643篇 |
科学研究 | 144篇 |
各国文化 | 21篇 |
体育 | 191篇 |
综合类 | 1篇 |
文化理论 | 12篇 |
信息传播 | 238篇 |
出版年
2022年 | 14篇 |
2021年 | 17篇 |
2020年 | 38篇 |
2019年 | 82篇 |
2018年 | 90篇 |
2017年 | 95篇 |
2016年 | 71篇 |
2015年 | 47篇 |
2014年 | 69篇 |
2013年 | 453篇 |
2012年 | 47篇 |
2011年 | 60篇 |
2010年 | 41篇 |
2009年 | 47篇 |
2008年 | 52篇 |
2007年 | 79篇 |
2006年 | 93篇 |
2005年 | 54篇 |
2004年 | 49篇 |
2003年 | 44篇 |
2002年 | 36篇 |
2001年 | 35篇 |
2000年 | 44篇 |
1999年 | 30篇 |
1998年 | 19篇 |
1997年 | 23篇 |
1996年 | 16篇 |
1995年 | 11篇 |
1994年 | 24篇 |
1993年 | 19篇 |
1992年 | 20篇 |
1991年 | 17篇 |
1990年 | 13篇 |
1989年 | 21篇 |
1988年 | 18篇 |
1987年 | 13篇 |
1986年 | 18篇 |
1985年 | 15篇 |
1984年 | 20篇 |
1983年 | 19篇 |
1982年 | 12篇 |
1981年 | 14篇 |
1980年 | 16篇 |
1979年 | 19篇 |
1978年 | 8篇 |
1977年 | 10篇 |
1974年 | 8篇 |
1972年 | 8篇 |
1927年 | 8篇 |
1926年 | 10篇 |
排序方式: 共有2250条查询结果,搜索用时 234 毫秒
951.
952.
Prediction of elementary school children's externalizing problem behaviors from attentional and behavioral regulation and negative emotionality 总被引:6,自引:0,他引:6
Eisenberg N Guthrie IK Fabes RA Shepard S Losoya S Murphy BC Jones S Poulin R Reiser M 《Child development》2000,71(5):1367-1382
The purpose of this study was to examine the moderating role of individual differences in negative emotionality in the relations of behavioral and attentional (emotional) regulation to externalizing problem behaviors. Teachers' and one parent's reports of children's regulation (attentional and behavioral), emotionality, and problem behavior were obtained when children were in kindergarten to grade 3 and two years later (N = 169; 146 in major analyses); children's behavioral regulation also was assessed with a measure of persistence. According to the best fitting structural equation model, at two ages behavioral dysregulation predicted externalizing behavior problems for children both high and low in negative emotionality, whereas prediction of problem behavior from attentional control was significant only for children prone to negative emotionality. There were unique, additive effects of behavioral and attentional regulation for predicting problem behavior as well as moderating effects of negative emotionality for attentional regulation. 相似文献
953.
954.
955.
956.
957.
Strength training with isometric contractions produces large but highly angle-specific adaptations. To contrast the contractile mode of isometric versus dynamic training, but diminish the strong angle specificity effect, we compared the strength gains produced by isometric training at four joint angles with conventional dynamic training. Thirty-three recreationally active healthy males aged 18 - 30 years completed 9 weeks of strength training of the quadriceps muscle group three times per week. An intra-individual design was adopted: one leg performed purely isometric training at each of four joint angles (isometrically trained leg); the other leg performed conventional dynamic training, lifting and lowering (dynamically trained leg). Both legs trained at similar relative loads for the same duration. The quadriceps strength of each leg was measured isometrically (at four angles) and isokinetically (at three velocities) pre and post training. After 9 weeks of training, the increase in isokinetic strength was similar in both legs (pooled data from three velocities: dynamically trained leg, 10.7%; isometrically trained leg, 10.5%). Isometric strength increases were significantly greater for the isometrically trained leg (pooled data from four angles: dynamically trained leg, 13.1%; isometrically trained leg, 18.0%). This may have been due to the greater absolute torque involved with isometric training or a residual angle specificity effect despite the isometric training being divided over four angles. 相似文献
958.
Maintaining the anonymity of cadavers in medical education: Historic relic or educational and ethical necessity? 下载免费PDF全文
Throughout the modern history of anatomical dissection by medical and other health science students, cadavers have been anonymized. This has meant that students have been provided with limited, if any, information on the identities or medical histories of those they are dissecting. While there was little way around this when the bodies were unclaimed, this need not be the case when the bodies have been donated. However, with a few exceptions, no efforts have been made to change this model. Recent attempts to move anatomy teaching in a more humanistic direction, by emphasizing the cadaver as the students' first patient and with the growth of commemoration services following the dissecting process, raise the question of whether cadavers should continue to be anonymized. In laying a basis for discussion of this matter, we outline what appear to be the virtues of anonymity, and the form that alternatives to anonymity might take. The options identified are nonidentification, low information; nonidentification, moderate information; and identification, full information. The virtues and drawbacks of each of these possibilities are assessed by analyzing their value for students, and also for donors and their families. Policy issues raised by alternatives are also considered. This article provides a basis for continued discussion and suggestions for further research in this area. Anat Sci Educ 10: 87–97. © 2016 American Association of Anatomists. 相似文献
959.
960.
ABSTRACTThe institutional repository (IR) can provide a system for digitizing print serials for online delivery and a way to archive and preserve serial content already available online. Organizing serial content in IRs varies based on the architecture of each repository. In this presentation, Kay Teel of the Metadata Department at Stanford University Libraries discussed different approaches IRs use to manage serial content. She gave examples illustrating the inconsistent treatment of serials in the Stanford Digital Repository (SDR) and described a conceptual model for serials in the SDR to provide an improved user experience finding and accessing digital serial content. 相似文献