全文获取类型
收费全文 | 360篇 |
免费 | 9篇 |
专业分类
教育 | 264篇 |
科学研究 | 9篇 |
各国文化 | 4篇 |
体育 | 62篇 |
文化理论 | 5篇 |
信息传播 | 25篇 |
出版年
2023年 | 2篇 |
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 8篇 |
2019年 | 17篇 |
2018年 | 23篇 |
2017年 | 27篇 |
2016年 | 24篇 |
2015年 | 22篇 |
2014年 | 16篇 |
2013年 | 94篇 |
2012年 | 8篇 |
2011年 | 9篇 |
2010年 | 3篇 |
2009年 | 10篇 |
2008年 | 6篇 |
2007年 | 10篇 |
2006年 | 6篇 |
2005年 | 5篇 |
2004年 | 4篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 3篇 |
2000年 | 5篇 |
1999年 | 1篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 1篇 |
1995年 | 6篇 |
1994年 | 1篇 |
1993年 | 6篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1980年 | 2篇 |
1978年 | 1篇 |
1974年 | 1篇 |
1973年 | 3篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1892年 | 1篇 |
1887年 | 1篇 |
1870年 | 1篇 |
1862年 | 1篇 |
排序方式: 共有369条查询结果,搜索用时 15 毫秒
71.
72.
73.
74.
75.
76.
The literature suggests that peer assessment contributes to the development of student learning and promotes ownership of
assessment processes. These claims emerge from research conducted primarily in Western contexts. This exploratory paper reports
on the perspectives that a class of Hong Kong primary school students and their teachers have on their engagement with peer
assessment. It draws on data collected through extensive interviews and classroom observations from a 2-year case study. The
findings indicate that student perceptions about the usefulness of peer assessment follow from their perspectives on quality
of peer feedback, peer language proficiency, and the novelty or repetitiveness of its processes. Teachers and students also
viewed peer assessment as assuming a wider role in preparing for examinations and future secondary schooling. A key implication
is that assessment practices are deeply cultural and, in test-dominated settings, peer assessment may have most potential
when explicit links are drawn with preparation for summative assessment. 相似文献
77.
Daniel F. B. Haeufle Jay Worobets Ian Wright Jenny Haeufle Darren Stefanyshyn 《Sports Engineering》2012,15(4):215-220
A common belief in the golf community is that a lighter shaft allows the golfer to swing the club faster. From a mechanical point of view, reducing the mass of the shaft would result in a faster swing. However, a golfer is not a purely mechanical system, and so it is simplistic to assume that identical loads will be applied when swinging different clubs. Therefore, the purpose of this study was to test the hypothesis that golfers behave similar to a mechanical model when swinging clubs of varying mass. A torque driven model estimated the effects caused by the addition of 22?g to the shaft. Twelve golfers hit balls with a standard driver as well as a driver fitted with the same 22?g increase in mass. Club kinematics were collected with a high-speed motion capture system. The model predicted a 1.7?% lower club head speed for the club with additional mass. One subject showed a similar reduction (1.4?%), but one subject showed an increase in club head speed by 3.0?%. Ten subjects did not show any significant differences. These results suggest that golfers do not respond to changes in club mass in a mechanically predictable way. 相似文献
78.
Worobets J Stefanyshyn D 《Sports biomechanics / International Society of Biomechanics in Sports》2012,11(2):239-248
The role of shaft stiffness on the golf swing is not well understood. Studies in which golfers hit balls with clubs of varying shaft flex have reported changes in ball distance. The results of mathematical models suggest that shaft stiffness affects only the orientation of the clubhead at impact, not the speed of the clubhead, but there are no experimental results validating these findings. The purpose of this study was therefore to experimentally examine the influence of shaft stiffness on clubhead kinematics at ball impact. Forty golfers hit 10 balls with each of five drivers varying in shaft stiffness from 'Ladies' to 'Extra-Stiff', in a double-blind study design. The motions of three reflective markers attached to the clubhead were captured with a high-speed motion analysis system. At ball impact, shaft stiffness had a statistically significant influence on clubhead speed for 27 subjects, on loft angle for 11 subjects, and on lie angle for all 40 subjects. No effect was observed on face angle, in to out path angle, or attack angle. These results show that shaft stiffness can affect ball launch conditions by altering clubhead speed and/or loft angle. 相似文献
79.
80.