全文获取类型
收费全文 | 568篇 |
免费 | 21篇 |
国内免费 | 1篇 |
专业分类
教育 | 443篇 |
科学研究 | 18篇 |
各国文化 | 6篇 |
体育 | 84篇 |
文化理论 | 2篇 |
信息传播 | 37篇 |
出版年
2024年 | 2篇 |
2023年 | 8篇 |
2022年 | 4篇 |
2021年 | 19篇 |
2020年 | 26篇 |
2019年 | 49篇 |
2018年 | 35篇 |
2017年 | 35篇 |
2016年 | 33篇 |
2015年 | 26篇 |
2014年 | 17篇 |
2013年 | 131篇 |
2012年 | 26篇 |
2011年 | 17篇 |
2010年 | 15篇 |
2009年 | 11篇 |
2008年 | 17篇 |
2007年 | 18篇 |
2006年 | 6篇 |
2005年 | 11篇 |
2004年 | 8篇 |
2003年 | 7篇 |
2002年 | 13篇 |
2001年 | 2篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1990年 | 2篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1974年 | 3篇 |
1973年 | 1篇 |
1970年 | 1篇 |
1969年 | 4篇 |
1966年 | 1篇 |
1964年 | 1篇 |
1958年 | 1篇 |
1945年 | 1篇 |
排序方式: 共有590条查询结果,搜索用时 15 毫秒
541.
Research Findings from the Tennessee Value-Added Assessment System (TVAAS) Database: Implications for Educational Evaluation and Research 总被引:2,自引:0,他引:2
The Tennessee Value-Added Assessment System determines the effectiveness of school systems, schools, and teachers based on student academic growth over time. An integral part of TVAAS is a massive, longitudinally merged database linking students and student outcomes to the schools and systems in which they are enrolled and to the teachers to whom they are assigned as they transition from grade to grade. Research conducted utilizing data from the TVAAS database has shown that race, socioeconomic level, class size, and classroom heterogeneity are poor predictors of student academic growth. Rather, the effectiveness of the teacher is the major determinant of student academic progress. Teacher effects on student achievement have been found to be both additive and cumulative with little evidence that subsequent effective teachers can offset the effects of ineffective ones. For these reasons, a component linking teacher effectiveness to student outcomes is a necessary part of any effective educational evaluation system. 相似文献
542.
Joan E. Sieber Richard E. Clark Helen H. Smith Nancy Sanders 《Contemporary educational psychology》1978,3(3):246-264
The ability to recognize when it is warranted to be uncertain was developed effectively in 167 elementary school students through daily 15-min lessons over a 5-week period. This initial training did not deal with drug use in any way. A 3-year follow-up evaluation measured retention of these warranted-uncertainty skills, and assessed the effects of these skills on students' use of hard and soft drugs. In comparison with the matched control subjects, there was evidence of some retention after 3 years: the trained subjects were slightly better able to recognize when it is warranted to be uncertain about the effects of drugs. There was also strong evidence that many of the controls had acquired, somehow, the ability to generate warranted uncertainty, and that warranted uncertainty functioned as a stable construct (irrespective of how it was acquired) and was related to drug use. It appeared to produce a skepticism or an analytic attitude that allowed the student to ignore peer and parental dogma about drugs. 相似文献
543.
544.
545.
Beatriz B. Gomes Leandro Machado Nuno V. Ramos Filipe A. V. Conceição Ross H. Sanders Mário A. P. Vaz 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(4):453-461
Using theoretical principles, the components of drag (friction D F, pressure D PR and wave D W) of a single-seat kayak were analysed. The purpose was to examine the effect of changes in wetted surface area due to changes in kayaker’s weight and the relative contribution of D F, D PR and D W to the total passive drag as function of velocity. The total passive drag values were based on experimental data collected in a single-seat kayak. Three different kayaker simulated weights were tested – 65, 75 and 85 kg. D F was the drag component that contributed the greatest percentage (between 60 and 68% at 5.56 m/s the top velocity tested) to the total passive drag for all the velocities tested and simulated weights. D W was the most affected by the increase in kayaker’s simulated weight, mainly when comparing 65/75 to 85 kg. Results support the importance of a kayak design selection that minimises the kayak’s drag for the individual weight of the kayaker. Also, the results suggest that the path for better hydrodynamic kayak performance should seek changes that can reduce D F, D PR and D W with D F offering the most potential to reduce passive drag. 相似文献
546.
Sanders R Sanders L 《Sports biomechanics / International Society of Biomechanics in Sports》2005,4(2):245-268
The aim of this study was to determine whether a constructivist approach, in particular a visit to a zoo, could be effective in consolidating mechanical concepts and applying those concepts to coaching and teaching. Ten students in their final year of their Bachelor of Physical Education at the University of Edinburgh participated in a visit to Edinburgh Zoo. During the visit students completed a worksheet of questions and engaged interactively in discussing how various animals are adapted mechanically to survive in their environments. Immediately after the visit they completed a questionnaire with four sections. The first section assessed whether they could apply the mechanical concepts discussed during the visit to human sports performance. The second canvassed their opinions on whether the visit was effective in reinforcing mechanical concepts, in developing 'lateral thinking' about mechanical concepts, and in improving their ability to apply mechanical concepts to coaching and teaching. The third canvassed their opinions on whether the visit would be effective for senior high school Physical Education and Sports Science students for developing mechanical concepts and applying them to coaching. The fourth section canvassed their opinions on when the visit should be conducted for Physical Education and Sports Science students in universities and in senior high schools. The results indicated that the visit was effective in reinforcing mechanical concepts and in applying them laterally to improve understanding of human sports performance. Participants believed that the visit would also be effective for senior high school students. All participants believed that the visit would be most beneficial after at least one course in biomechanics that covers the basic biomechanical principles. 相似文献
547.
548.
Sanders R Burnett A 《Sports biomechanics / International Society of Biomechanics in Sports》2004,3(1):29-41
The purpose of this study was to compare timing and technique of males and females performing reverse twisting dives in elite international competition. Video data of the dives performed at the 1999 FINA World Diving Cup were captured and digitised to obtain times and postures of the divers at specific events including takeoff and entry. Estimates of flight height and mass-normalised work done on the springboard were obtained from flight times. The data indicated that many males are able to complete an additional twist rotation because they attain more height, and therefore more time in the air, than females. 相似文献
549.
Steven M. Ross Allison Potter Jangmi Paek Dawn McKay William Sanders James Ashton 《Journal of Education for Students Placed at Risk》2013,18(1):26-58
Supplemental Educational Services (SES), a component of the No Child Left Behind (NCLB) Act, provides free tutoring to economically disadvantaged children who are attending Title I schools in their 2nd or more years of school improvement. This research evaluated SES in Tennessee to determine the: (a) impacts on student achievement, and (b) perceptions of SES implementation and outcomes by teachers, district coordinators, principals/site coordinators, and parents. Using value-added methodology, statistical analyses of achievement data controlled for both student ability and teacher effects in 2 alternative models. Not surprisingly, parent reactions to SES were highly positive, whereas those by the 3 other stakeholder groups were more mixed. Achievement results from both analytical models yielded mostly small and nonsignificant provider effects. The implications of the findings for evaluating SES are discussed with regard to both research and policy issues. Recommendations are offered for broadening the evaluation of SES through smaller mixed-methods studies to examine implementation and educational outcomes in more highly controlled contexts. 相似文献
550.
In many ways, Tahiti was central to European colonialism, for it was there that European visitors forged a model of primitive nature that served as a comparison to, and sometimes critique of, European civilization. Tahiti was also the place from which a unique plant, the breadfruit, was brought to European colonies and to England and France during the late 18th century, at the behest of naturalists. With the breadfruit travelled contrasting perceptions of the Tahitian way of life. The autocritique of European lifestyles and the naturalization of the breadfruit are closely intertwined. The breadfruit indeed became a radical food of the end of the 18th century. 相似文献