全文获取类型
收费全文 | 3010篇 |
免费 | 54篇 |
国内免费 | 3篇 |
专业分类
教育 | 2092篇 |
科学研究 | 224篇 |
各国文化 | 63篇 |
体育 | 280篇 |
综合类 | 2篇 |
文化理论 | 60篇 |
信息传播 | 346篇 |
出版年
2023年 | 12篇 |
2022年 | 13篇 |
2021年 | 33篇 |
2020年 | 53篇 |
2019年 | 78篇 |
2018年 | 152篇 |
2017年 | 135篇 |
2016年 | 121篇 |
2015年 | 86篇 |
2014年 | 101篇 |
2013年 | 678篇 |
2012年 | 95篇 |
2011年 | 94篇 |
2010年 | 75篇 |
2009年 | 78篇 |
2008年 | 73篇 |
2007年 | 68篇 |
2006年 | 58篇 |
2005年 | 63篇 |
2004年 | 59篇 |
2003年 | 56篇 |
2002年 | 59篇 |
2001年 | 39篇 |
2000年 | 50篇 |
1999年 | 39篇 |
1998年 | 38篇 |
1997年 | 37篇 |
1996年 | 37篇 |
1995年 | 35篇 |
1994年 | 32篇 |
1993年 | 36篇 |
1992年 | 21篇 |
1991年 | 19篇 |
1990年 | 32篇 |
1989年 | 23篇 |
1988年 | 20篇 |
1987年 | 21篇 |
1986年 | 15篇 |
1985年 | 25篇 |
1984年 | 30篇 |
1983年 | 23篇 |
1982年 | 19篇 |
1981年 | 21篇 |
1980年 | 23篇 |
1979年 | 17篇 |
1978年 | 13篇 |
1977年 | 18篇 |
1974年 | 14篇 |
1973年 | 15篇 |
1971年 | 10篇 |
排序方式: 共有3067条查询结果,搜索用时 15 毫秒
111.
The coronal and sagittal plane leg movements of 24 experienced male cyclists were assessed using video analysis while cycling on a Kingcycle windload simulator. The cyclists were grouped into those with a history of injury and an asymptomatic group on the basis of self-reported injury status. The ages, cycling experience, competition distances and competition speeds of the two groups were compared using Student's t-test. No significant differences (P < 0.05) were found for any of these variables. The maximum and minimum shank adduction, shank adduction velocities, knee flexion and ankle dorsiflexion values were also compared using Student's t-test. Significant differences were found at the point of maximum adduction (1.9 degrees; P = 0.019) and minimum dorsiflexion (4.9 degrees; P = 0.014). These differences indicated more dorsiflexion and greater abduction on the part of the symptomatic cyclists, supporting previous research that found that cyclists with a history of injury differ from those without a history of injury in the coronal plane leg movement patterns they adopt. Also, the most extreme medial position of the knee relative to the ankle occurred during knee extension. This supports the potential injury mechanism proposed by Francis (1986), which had previously only been examined using coronal plane kinematics. 相似文献
112.
Roy Butler 《牛津教育评论》2013,39(3):265-278
Abstract The claim that students should determine their own curricula is examined. If granted, primacy would be given to the autonomy and self‐ascribed interests of the students. The case for student autonomy is discussed in the context of the theory of philosophical anarchism. The anarchist dichotomy of autonomy and authority is criticised. A brief examination of Kant's account of autonomy leads to a rejection of the strong individualism that characterises that dichotomy. It is argued that the curriculum should be the outcome of the shared autonomy of students and teachers; such would serve the interests of students by maximising the autonomy of all. The curriculum would meet the interests of all students, but would not, indeed could not, represent the self‐ascribed interests of each individual. 相似文献
113.
114.
Roy Rothwell 《Research Policy》1974,3(1):30-38
A brief and constructive criticism is offered of the recent study (see preceding paper) which successfully adopted and adapted the Sussex SAPPHO ‘pair comparison’ technique to the investigation of twelve success-failure pairs in the Hungarian electronics industry. Despite some differences in methodology and differences in the industrial and political environments in which the two studies were made, the results of the Hungarian SAPPHO and the Sussex SAPPHO are remarkably similar. 相似文献
115.
116.
117.
118.
119.
120.