全文获取类型
收费全文 | 736篇 |
免费 | 2篇 |
专业分类
教育 | 592篇 |
科学研究 | 28篇 |
各国文化 | 4篇 |
体育 | 67篇 |
文化理论 | 7篇 |
信息传播 | 40篇 |
出版年
2020年 | 13篇 |
2019年 | 14篇 |
2018年 | 10篇 |
2017年 | 11篇 |
2016年 | 17篇 |
2015年 | 11篇 |
2014年 | 13篇 |
2013年 | 163篇 |
2012年 | 11篇 |
2011年 | 18篇 |
2010年 | 8篇 |
2009年 | 11篇 |
2008年 | 15篇 |
2007年 | 19篇 |
2006年 | 13篇 |
2005年 | 17篇 |
2004年 | 16篇 |
2003年 | 5篇 |
2002年 | 11篇 |
2001年 | 6篇 |
2000年 | 12篇 |
1999年 | 12篇 |
1998年 | 12篇 |
1997年 | 14篇 |
1996年 | 9篇 |
1995年 | 16篇 |
1994年 | 12篇 |
1993年 | 14篇 |
1992年 | 10篇 |
1991年 | 13篇 |
1990年 | 16篇 |
1989年 | 17篇 |
1988年 | 8篇 |
1987年 | 6篇 |
1986年 | 7篇 |
1985年 | 15篇 |
1984年 | 13篇 |
1983年 | 9篇 |
1982年 | 13篇 |
1981年 | 13篇 |
1980年 | 14篇 |
1979年 | 10篇 |
1978年 | 11篇 |
1977年 | 6篇 |
1976年 | 5篇 |
1975年 | 8篇 |
1973年 | 8篇 |
1970年 | 4篇 |
1967年 | 3篇 |
1940年 | 4篇 |
排序方式: 共有738条查询结果,搜索用时 15 毫秒
21.
Barry Kennerk 《History of education》2019,48(3):356-373
The teaching of sick children in hospital is an often overlooked aspect of Ireland’s national education system. Prior to the 1970s, there was hardly any formal structure in place for this type of schooling in the country, despite the fact that many children could be inpatients for weeks or months at a time. In 1980, a report, published by the Association for the Welfare of Children in Ireland, revealed that although there had been an improvement in the intervening decade, only 6% of hospitals had a dedicated schoolroom. Drawing on previously unresearched papers belonging to Temple Street Children’s Hospital, this article will take a closer look at the socio-political forces that held back the development of the hospital classroom in Ireland for so many decades; it will also explore some of the factors that promoted its development after 1970, thus helping to explain why the education of sick children is so firmly established today. 相似文献
22.
Bixler B Pease D Fairhurst F 《Sports biomechanics / International Society of Biomechanics in Sports》2007,6(1):81-98
The aim of this study was to build an accurate computer-based model to study the water flow and drag force characteristics around and acting upon the human body while in a submerged streamlined position. Comparisons of total drag force were performed between an actual swimmer, a virtual computational fluid dynamics (CFD) model of the swimmer, and an actual mannequin based on the virtual model. Drag forces were determined for velocities between 1.5 m/s and 2.25 m/s (representative of the velocities demonstrated in elite competition). The drag forces calculated from the virtual model using CFD were found to be within 4% of the experimentally determined values for the mannequin. The mannequin drag was found to be 18% less than the drag of the swimmer at each velocity examined. This study has determined the accuracy of using CFD for the analysis of the hydrodynamics of swimming and has allowed for the improved understanding of the relative contributions of various forms of drag to the total drag force experienced by submerged swimmers. 相似文献
23.
24.
Barry T. Christian 《Psychology in the schools》1981,18(1):112-114
The usefulness of a baseline record is often compromised by extraneous events in the natural environment that artificially intervene to prevent the performance of a specific target behavior. To attenuate this problem, a simple ratio adjustment procedure was suggested that compares the observed response frequency with a maximum possible frequency for each observation period. This ratio is then transformed into a response percentage with a more general predictive value for the behavior modification practitioner. 相似文献
25.
In order to understand the task of instructional designers who produce learning support software, this paper reviews the influence of learning theory on instructional design, recent developments in computer technology, and the evolving role of the instructor as a facilitator of higher-order thinking. Constructivist principles of learning and an appreciation for the fact that the learner must become more independent and skilled in metacognitive self-assessment and self-management are fundamental to this changing role. Two cognitive tools that provide learner/user support for personal construction of knowledge systems are “MindMap” and “Learning FourMat Processor.” These tools are examined in the light of current learning theory and a recent study comparing the work of novice and expert writers using different forms of performance support. Recommendations are made for the development of a more complete set of cognitive tools that enables users to construct their own multimedia knowledge systems based on higher-order thinking and problem solving. 相似文献
26.
27.
J. Bruce Francis Michalina Vaughan Colin Flood Page Sally Tomlinson R. A. Becher Margaret C. Ives John Urry K. G. Collier Meir Zadok Charles Carter Jürgen Schramm Jean Barry Graeme C. Moodie Donald Bligh R. A. King D. G. Mulcahy Peter Scott F. R. Charmer T. R. Bone John A. Hughes Roger Greenhough Alec M. Ross John Wakeford Joyce Skinner Duncan B. Nimmo Cedric Cullingford L. R. B. Elton 《Higher Education》1979,8(6):709-744
28.
John Griffiths Barry 《Journal of The Franklin Institute》1940,229(4):491-512
In this paper are presented the results of a study of synchronous motor oscillations resulting from sudden application of mechanical load. By means of the Differential Analyzer at the Moore School of Electrical Engineering of the University of Pennsylvania, theoretical synchronous machine equations were solved for conditions of suddenly applied load, and the effect on the resulting oscillations of variations in field excitation was determined for the most practical cases. The analyzer results were checked by a number of experimental observations, and it was found that the magnitude and duration of the oscillations could be greatly decreased by using the proper type of excitation variation. 相似文献
29.
30.