全文获取类型
收费全文 | 5998篇 |
免费 | 119篇 |
国内免费 | 5篇 |
专业分类
教育 | 4046篇 |
科学研究 | 356篇 |
各国文化 | 101篇 |
体育 | 786篇 |
综合类 | 3篇 |
文化理论 | 74篇 |
信息传播 | 756篇 |
出版年
2023年 | 23篇 |
2022年 | 34篇 |
2021年 | 67篇 |
2020年 | 134篇 |
2019年 | 261篇 |
2018年 | 285篇 |
2017年 | 303篇 |
2016年 | 264篇 |
2015年 | 175篇 |
2014年 | 211篇 |
2013年 | 1347篇 |
2012年 | 178篇 |
2011年 | 187篇 |
2010年 | 163篇 |
2009年 | 155篇 |
2008年 | 185篇 |
2007年 | 199篇 |
2006年 | 148篇 |
2005年 | 135篇 |
2004年 | 126篇 |
2003年 | 132篇 |
2002年 | 108篇 |
2001年 | 94篇 |
2000年 | 91篇 |
1999年 | 79篇 |
1998年 | 76篇 |
1997年 | 54篇 |
1996年 | 53篇 |
1995年 | 53篇 |
1994年 | 53篇 |
1993年 | 68篇 |
1992年 | 47篇 |
1991年 | 47篇 |
1990年 | 45篇 |
1989年 | 45篇 |
1988年 | 33篇 |
1987年 | 29篇 |
1986年 | 30篇 |
1985年 | 30篇 |
1984年 | 37篇 |
1983年 | 38篇 |
1982年 | 33篇 |
1981年 | 37篇 |
1980年 | 18篇 |
1979年 | 15篇 |
1978年 | 15篇 |
1977年 | 20篇 |
1976年 | 13篇 |
1975年 | 15篇 |
1973年 | 13篇 |
排序方式: 共有6122条查询结果,搜索用时 38 毫秒
71.
Relying on cultural transmission, social identity and self-categorization theories, this study uses an innovative two-part photo-pasting and survey method to investigate quantitatively and qualitatively non-fans’, fans’ and players’ assumptions about what positions black and white players should occupy in American football. Both white and black players and fans showed evidence of being cultural transmitters of racial ideologies associated with the quarterback position in American football. Overall, the respondent choices for quarterback diverged significantly from equality but not significantly from the reality of the National Football League. Players and fan and non-fan participants alike showed evidence of being cultural consumers and transmitters of racial ideologies associated with the quarterback position. Narrative reasons for player choices aligned with past literature about racial stereotypes. On most measures, the findings did not differ greatly among the institutions from which study participants were drawn, their diversity in geography, racial composition, ideology, athletic division and public–private status notwithstanding. 相似文献
72.
73.
Ramesh Swaminathan Jonathan M. Williams Michael D. Jones 《Journal of sports sciences》2016,34(11):1058-1066
Artificial surfaces are now an established alternative to grass (natural) surfaces in rugby union. Little is known, however, about their potential to reduce injury. This study characterises the spinal kinematics of rugby union hookers during scrummaging on third-generation synthetic (3G) and natural pitches. The spine was sectioned into five segments, with inertial sensors providing three-dimensional kinematic data sampled at 40 Hz/sensor. Twenty-two adult, male community club and university-level hookers were recruited. An equal number were analysed whilst scrummaging on natural or synthetic turf. Players scrummaging on synthetic turf demonstrated less angular velocity in the lower thoracic spine for right and left lateral bending and right rotation. The general reduction in the range of motion and velocities, extrapolated over a prolonged playing career, may mean that the synthetic turf could result in fewer degenerative injuries. It should be noted, however, that this conclusion considers only the scrummaging scenario. 相似文献
74.
The primary purpose of this article is to provide an in-depth understanding of the manner in which surveillance technologies have become readily appropriated and utilised by elite Rugby Union coaches. It is conceded that positions adopted by populist writings commonly categorise the act of coaching as an educational activity that harnesses holistic intentions. Through reflecting upon semi-structured interviews with players located at an Aviva Premiership Rugby Union Club, we provide insight into an elite sporting institution that more accurately depicts coaching as a technocratic activity. The resultant analysis is critical in its review of surveillance mechanisms embedded in institutional practice, extending to the sports coaching setting, which explicate sinister rather than pastoral motives to enforce a disciplinary power that enhances the quantification of athletic performance. The article concludes by emphasising the impact of such practices upon establishing a sense of trust and the construction of self autonomous to the sporting domain. We argue that the emerging and steadfast acceptance of technology in the elite coaching environment is threatening to circumvent the learning potential of players by merely viewing them as functionaries. In adopting this position, we tentatively suggest that future research seeking to inform the practice of coaching and coach education should continue to pursue this critical dialogue to question whether, and to what extent, an overreliance on technology is becoming perceived as the ‘gold standard’ of professional practice amongst the coaching fraternity. 相似文献
75.
76.
We identified the perceptual–cognitive skills and player history variables that differentiate players selected or not selected into an elite youth football (i.e. soccer) programme in Australia. A sample of elite youth male football players (n?=?127) completed an adapted participation history questionnaire and video-based assessments of perceptual–cognitive skills. Following data collection, 22 of these players were offered a full-time scholarship for enrolment at an elite player residential programme. Participants selected for the scholarship programme recorded superior performance on the combined perceptual–cognitive skills tests compared to the non-selected group. There were no significant between group differences on the player history variables. Stepwise discriminant function analysis identified four predictor variables that resulted in the best categorization of selected and non-selected players (i.e. recent match-play performance, region, number of other sports participated, combined perceptual–cognitive performance). The effectiveness of the discriminant function is reflected by 93.7% of players being correctly classified, with the four variables accounting for 57.6% of the variance. Our discriminating model for selection may provide a greater understanding of the factors that influence elite youth talent selection and identification. 相似文献
77.
Purpose: The purpose of this study was to investigate whether loads carried in a backpack, with a load mass ranging from 0 to 20?kg, causes respiratory muscle fatigue. Methods: Eight males performed four randomised load carriage (LC) trials comprising 60?min walking at 6.5?km?h?1 wearing a backpack of either 0 (LC0), 10 (LC10), 15 (LC15) or 20?kg (LC20). Inspiratory (PImax) and expiratory (PEmax) mouth pressures were assessed prior to and immediately following each trial. Pulmonary gas exchange, heart rate (HR), blood lactate and glucose concentration and perceptual responses were recorded during the first and final 60?s of each trial. Results: Group mean PImax and PEmax were unchanged following 60-min load carriage in all conditions (p?>?.05). There was an increase over time in pulmonary gas exchange, HR and perceptions of effort relative to baseline measures during each trial (p?.05) with changes not different between trials (p?>?.05). Conclusions: These findings indicate that sub-maximal walking with no load or carrying 10, 15 or 20?kg in a backpack for up to 60?min does not cause respiratory muscle fatigue despite causing an increase in physiological, metabolic and perceptual parameters. 相似文献
78.
ABSTRACT: After a brief discussion of the concept of love and contemporary attitudes towards it, the article examines previously unpublished findings about children's ways of thinking about love, using evidence drawn from a research project on the developing sexual values of 9 and 10 year-old children. Love features extensively in their discussions and appears central to their worldview. They are aware of some of the complexities of love, and would value opportunities to discuss it further. The article concludes with a discussion of current inadequacies and future possibilities in schools' provision. 相似文献
79.
80.
Kim M. Tsai Ronald E. Dahl Michael R. Irwin Julienne E. Bower Heather McCreath Teresa E. Seeman David M. Almeida Andrew J. Fuligni 《Child development》2018,89(5):1577-1588
The current study examines the association between parental support and adolescent sleep under varying levels of family stress. Participants included 316 adolescents (Mage = 16.40 years, 43% male) and their parents (Mage = 45.67 years, 91% mothers) from diverse ethnic backgrounds. Both adolescents and parents completed questionnaires and adolescents wore wrist actigraphs and completed self‐reports on their sleep for 7 consecutive days. Results indicated that under contexts of family stress, more parental support was linked to longer sleep duration, less sleep variability, and less time spent awake during the night. Findings suggest that under contexts of family stress, cohesive family relationships may provide a sense of stability and security that is necessary for healthful sleep. 相似文献