全文获取类型
| 收费全文 | 361篇 |
| 免费 | 5篇 |
专业分类
| 教育 | 269篇 |
| 科学研究 | 10篇 |
| 各国文化 | 5篇 |
| 体育 | 31篇 |
| 文化理论 | 3篇 |
| 信息传播 | 48篇 |
出版年
| 2023年 | 4篇 |
| 2021年 | 2篇 |
| 2020年 | 6篇 |
| 2019年 | 11篇 |
| 2018年 | 9篇 |
| 2017年 | 14篇 |
| 2016年 | 17篇 |
| 2015年 | 8篇 |
| 2014年 | 18篇 |
| 2013年 | 105篇 |
| 2012年 | 9篇 |
| 2011年 | 6篇 |
| 2010年 | 5篇 |
| 2009年 | 10篇 |
| 2008年 | 6篇 |
| 2007年 | 6篇 |
| 2006年 | 11篇 |
| 2005年 | 6篇 |
| 2004年 | 11篇 |
| 2003年 | 5篇 |
| 2002年 | 6篇 |
| 2001年 | 3篇 |
| 2000年 | 4篇 |
| 1999年 | 5篇 |
| 1998年 | 2篇 |
| 1997年 | 3篇 |
| 1996年 | 4篇 |
| 1995年 | 2篇 |
| 1994年 | 6篇 |
| 1993年 | 4篇 |
| 1992年 | 4篇 |
| 1991年 | 2篇 |
| 1990年 | 3篇 |
| 1989年 | 5篇 |
| 1988年 | 3篇 |
| 1987年 | 2篇 |
| 1985年 | 2篇 |
| 1984年 | 3篇 |
| 1982年 | 3篇 |
| 1981年 | 3篇 |
| 1980年 | 3篇 |
| 1979年 | 3篇 |
| 1978年 | 3篇 |
| 1977年 | 4篇 |
| 1975年 | 2篇 |
| 1964年 | 1篇 |
| 1958年 | 1篇 |
| 1931年 | 1篇 |
| 1915年 | 1篇 |
| 1877年 | 1篇 |
排序方式： 共有366条查询结果，搜索用时 359 毫秒
81.
82.
A new residential college and a faculty-in-residence program demonstrate how student affairs educators and academic faculty at one institution have collaborated to create transformational learning experiences for their students. 相似文献
83.
84.
85.
86.
Rapid changes in the professional activities of engineers are taking place as a result of revolutionary developments in sciences and industry. Inevitably, these changes must be reflected in all aspects of the training and education of engineers. Engineering curricula and other phases of college programs are being modified in several respects to provide the present-day graduate with the knowledge and the understanding of fundamentals that he requires. In recognition of the fact that the education of an engineer is far from complete when he graduates, industry is assuming increasing responsibility for parts of the educational program. Further cooperation between the colleges and industry is natural and desirable. 相似文献
87.
88.
89.
90.
The aim of the present study was to test the hypothesis that upper body aerobically trained athletes (kayak canoeists) would have greater left ventricular wall thickness, but similar left ventricular diastolic chamber dimensions, compared with recreationally active and sedentary men. Ultrasound echocardiography was used to determine cardiac structure and function in highly trained kayak canoeists (n = 10), moderately active (n = 10) and sedentary men (n = 10). The septal and posterior left ventricular walls were approximately 0.2 cm thicker in kayak canoeists (P < 0.05), and left ventricular mass was 51% and 32% greater (P < 0.05) in canoeists than in the sedentary and moderately trained participants, respectively. There were no differences in left ventricular chamber dimension, suggesting that the kayak canoeists had a concentric pattern of left ventricular adaptation to aerobic upper body training. Scaling the data to body composition indices had no effect on the outcome of the statistical analysis. There were no differences in resting Doppler left ventricular diastolic or systolic function among the groups. Ejection fraction was lower in the kayak canoeists, but the magnitude of the difference was within the normal variability for this measurement. Thus aerobically upper body trained athletes demonstrated a concentric pattern of cardiac enlargement, but resting left ventricle function was not different between athletes, moderately active and sedentary individuals. 相似文献