全文获取类型
| 收费全文 | 532篇 |
| 免费 | 5篇 |
专业分类
| 教育 | 354篇 |
| 科学研究 | 45篇 |
| 各国文化 | 6篇 |
| 体育 | 33篇 |
| 文化理论 | 26篇 |
| 信息传播 | 73篇 |
出版年
| 2021年 | 4篇 |
| 2020年 | 9篇 |
| 2019年 | 11篇 |
| 2018年 | 18篇 |
| 2017年 | 20篇 |
| 2016年 | 13篇 |
| 2015年 | 10篇 |
| 2014年 | 12篇 |
| 2013年 | 140篇 |
| 2012年 | 8篇 |
| 2011年 | 14篇 |
| 2010年 | 8篇 |
| 2009年 | 10篇 |
| 2008年 | 5篇 |
| 2007年 | 9篇 |
| 2006年 | 12篇 |
| 2005年 | 11篇 |
| 2004年 | 12篇 |
| 2003年 | 15篇 |
| 2002年 | 19篇 |
| 2001年 | 13篇 |
| 2000年 | 9篇 |
| 1999年 | 13篇 |
| 1998年 | 9篇 |
| 1997年 | 9篇 |
| 1996年 | 8篇 |
| 1994年 | 7篇 |
| 1993年 | 3篇 |
| 1992年 | 4篇 |
| 1991年 | 7篇 |
| 1990年 | 3篇 |
| 1989年 | 8篇 |
| 1988年 | 2篇 |
| 1987年 | 3篇 |
| 1986年 | 2篇 |
| 1985年 | 5篇 |
| 1984年 | 4篇 |
| 1983年 | 7篇 |
| 1982年 | 4篇 |
| 1981年 | 4篇 |
| 1980年 | 5篇 |
| 1979年 | 5篇 |
| 1977年 | 8篇 |
| 1976年 | 2篇 |
| 1974年 | 4篇 |
| 1973年 | 3篇 |
| 1971年 | 2篇 |
| 1967年 | 3篇 |
| 1966年 | 2篇 |
| 1943年 | 2篇 |
排序方式： 共有537条查询结果，搜索用时 15 毫秒
491.
Abstract The purpose of this investigation was to determine whether combining two mental preparation strategies would be more effective in enhancing performances than a single strategy. Subjects (n = 40) practiced on a basketball free throw task (20 shots) using one of the following mental preparation strategies: (a) imagery, (b) relaxation, (c) relaxation plus imagery, (d) placebo control. To simulate game conditions, subjects were allowed only 10 s in which to use their mental preparation strategy. After the practice session, subjects shot 20 test free throws using their designated technique. Results indicated a significant main effect with the imagery group performing significantly better than the placebo control group although there were no specific differences between the three experimental groups. The results are discussed in terms of potential variables mediating the effectiveness of imagery in enhancing sport performance, and future directions for research are offered. 相似文献
492.
Leon Garrett Mohammed Sabie Roy Pangle 《Research quarterly for exercise and sport》2013,84(4):496-498
Abstract Utilizing canonical correlation analysis, the multivariate relationship between selected measures of motor performance and intellectual achievement was studied on 91 high school pupils. The students involved in the study were culturally deprived students who had been achieving well below their expected capacity. A significant relationship was found between the intellectual achievement domain and the motor performance domain. Also, significant relationships were found between the intellectual achievement domain and both of the sub-domains of fitness and coordination. The results in the present investigation were compared with the univariate analyses in a previous study. It was concluded that when the degree of relationship between two domains is desired, canonical correlation analysis may be of more value than the usual univariate procedures. 相似文献
493.
Winko W. An Vincy Wong Roy T.H. Cheung 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(4):375-383
Back injury is common in rowers. Asymmetrical lower limb reaction force on the foot stretchers during rowing may compromise trunk biomechanics and lead to back injury. However, such a mechanism remains putative. Therefore, this study examined lower limb reaction force in experienced rowers with and without a history of back injury. Six rowers who suffered from back injury for more than one week in the past year and another 19 rowers who were never injured performed maximal exertion rowing on a fixed-head rowing machine for 30 strokes. Peak force, average and peak loading rate of the lower limb reaction force during the middle 10-stroke were recorded using strain-gauge transducers placed at the foot stretchers. Asymmetries and intra-limb variability were quantified as asymmetry indices and coefficients of variation, respectively. No significant asymmetry was observed in all selected kinetic parameters between the injured and healthy rowers (p = 0.448–0.722, Hedges' g = 0.162–0.310). Subgroup analyses also did not reveal any significant kinetic differences between injured and healthy scullers or sweepers (p = 0.194–0.855, Hedges' g = 0.203–0.518). Rowers with a history of back injury, regardless of the rowing types, did not demonstrate greater lower limb reaction force asymmetry when compared with healthy rowers. 相似文献
494.
495.
496.
Debjani Roy 《Resonance》1996,1(12):39-48
Vertebrate vocalization came into existence for the first time in frogs. Acoustic signals produced by the frogs have well-defined physical characteristics and a clear biological meaning. The signals are meant to attract and assess the sex, species identity and genetic quality of potential mates. Acoustic communication plays a central role in the courtship behaviour of frogs. 相似文献
497.
498.
499.
500.