全文获取类型
收费全文 | 35278篇 |
免费 | 511篇 |
国内免费 | 25篇 |
专业分类
教育 | 24962篇 |
科学研究 | 3422篇 |
各国文化 | 355篇 |
体育 | 2995篇 |
综合类 | 23篇 |
文化理论 | 374篇 |
信息传播 | 3683篇 |
出版年
2021年 | 338篇 |
2020年 | 530篇 |
2019年 | 764篇 |
2018年 | 1071篇 |
2017年 | 1036篇 |
2016年 | 1018篇 |
2015年 | 628篇 |
2014年 | 846篇 |
2013年 | 6115篇 |
2012年 | 769篇 |
2011年 | 827篇 |
2010年 | 661篇 |
2009年 | 667篇 |
2008年 | 727篇 |
2007年 | 688篇 |
2006年 | 651篇 |
2005年 | 778篇 |
2004年 | 721篇 |
2003年 | 570篇 |
2002年 | 549篇 |
2001年 | 709篇 |
2000年 | 760篇 |
1999年 | 625篇 |
1998年 | 375篇 |
1997年 | 409篇 |
1996年 | 459篇 |
1995年 | 348篇 |
1994年 | 366篇 |
1993年 | 319篇 |
1992年 | 505篇 |
1991年 | 516篇 |
1990年 | 516篇 |
1989年 | 522篇 |
1988年 | 473篇 |
1987年 | 474篇 |
1986年 | 461篇 |
1985年 | 532篇 |
1984年 | 412篇 |
1983年 | 416篇 |
1982年 | 345篇 |
1981年 | 336篇 |
1980年 | 352篇 |
1979年 | 484篇 |
1978年 | 367篇 |
1977年 | 336篇 |
1976年 | 278篇 |
1975年 | 258篇 |
1974年 | 262篇 |
1973年 | 253篇 |
1971年 | 249篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Stressors in elite sport: a coach perspective 总被引:1,自引:1,他引:0
We examined the varying performance and organizational stressors experienced by coaches who operate with elite athletes. Following interviews with eleven coaches, content analysis of the data revealed coaches to experience comparable numbers of performance and organizational stressors. Performance stressors were divided between their own performance and that of their athletes, while organizational stressors included environmental, leadership, personal, and team factors. The findings provide evidence that coaches experience a variety of stressors that adds weight to the argument that they should be labelled as "performers" in their own right. A variety of future research topics and applied issues are also discussed. 相似文献
992.
Carbohydrate intake during endurance exercise delays the onset of fatigue and improves performance. Two recent cycling studies have reported increased time to exhaustion when protein is ingested together with carbohydrate. The purpose of the present study was to test the hypothesis that ingestion of a carbohydrate + protein beverage will lead to significant improvements in cycling time-trial performance relative to placebo and carbohydrate alone. Thirteen cyclists completed 120 min of constant-load ergometer cycling. Thereafter, participants performed a time-trial in which they completed a set amount of work (7 kJ kg(-1)) as quickly as possible. Participants completed four experimental trials, the first for familiarization and then three randomized, double-blind treatments consisting of a placebo, carbohydrate, and carbohydrate + protein. Participants received 250 ml of beverage every 15 min during the constant-load ride. Time-trial performance for carbohydrate (37.1 min, s = 3.8) was significantly (P < 0.05) faster than placebo (39.7 min, s = 4.6). Time-trial performance for carbohydrate + protein (38.8 min, s = 5.5) was not significantly different from either placebo or carbohydrate. Ingestion of a carbohydrate beverage during two hours of constant-load cycling significantly enhanced subsequent time-trial performance compared with placebo. The carbohydrate + protein beverage provided no additional performance benefit. 相似文献
993.
994.
This research examines the value-expressive function of attitudes and achievement goal theory in predicting moral attitudes. In Study 1, the Youth Sport Values Questionnaire (YSVQ; Lee, Whitehead, & Balchin, 2000) was modified to measure moral, competence, and status values. In Study 2, structural equation modeling on data from 549 competitors (317 males, 232 females) aged 12-15 years showed that moral and competence values predicted prosocial attitudes, whereas moral (negatively) and status values (positively) predicted antisocial attitudes. Competence and status values predicted task and ego orientation, respectively, and task and ego orientation partially mediated the effect of competence values on prosocial attitudes and of status values on antisocial attitudes, respectively. The role of sport values is discussed, and new research directions are proposed. 相似文献
995.
This study examined the utility of motivation as advanced by self-determination theory (Deci & Ryan, 2000) in predicting objectively assessed bouts of moderate intensity exercise behavior. Participants provided data pertaining to their exercise motivation. One week later, participants wore a combined accelerometer and heart rate monitor (Actiheart; Cambridge Neurotechnology Ltd) and 24-hr energy expenditure was estimated for 7 days. After controlling for gender and a combined marker of BMI and waist circumference, results showed autonomous motivation to positively predict moderate-intensity exercise bouts of >or=10 min, or=20 min, and an accumulation needed to meet public health recommendations for moderate intensity activity (i.e., ACSM/AHA guidelines). The present findings add bouts of objectively assessed exercise behavior to the growing body of literature that documents the adaptive consequences of engaging in exercise for autonomous reasons. Implications for practice and future work are discussed. 相似文献
996.
The influence of anxiety on visual attention in climbing 总被引:2,自引:0,他引:2
The object of the current study was to investigate anxiety-induced changes in movement and gaze behavior in novices on a climbing wall. Identical traverses were situated at high and low levels on a climbing wall to manipulate anxiety. In line with earlier studies, climbing times and movement times increased under anxiety. These changes were accompanied by similar changes in total and average fixation duration and the number of fixations, which were primarily aimed at the holds used for climbing. In combination with these findings, a decrease in search rate provided evidence for a decrease in processing efficiency as anxiety increased. 相似文献
997.
998.
This study reports correlations between the High School Personality Questionnaire and various indices of school achievement and compares the validities with prior studies. Three achievement scores are utilized: a self-report of high-school grades, a parental report of high-school grades several years after the testing, and actual college grades several years after the testing. In all cases, the results were similar and substantial, and consonant with typical values from earlier, nonlongitudinal studies. 相似文献
999.
Michael J. Fimian 《Psychology in the schools》1987,24(3):234-236
The alternate-forms and alpha reliabilities of the Teacher Stress Inventory were investigated based on the responses of two groups of 138 teachers. Reliability estimates ranged from .43 to .94 for the TSI subscales and .71 to .94 for the TSI whole scale, indicating high stability and equivalence for the stress factors across immediate, one-day, one-week, and two-week intervals using two different TSI short forms. Between-forms correlations were larger for the immediate sample than they were for the interval samples. Short-form TSI alphas ranged from .76 to .90. 相似文献
1000.