全文获取类型
收费全文 | 4533篇 |
免费 | 57篇 |
国内免费 | 10篇 |
专业分类
教育 | 3388篇 |
科学研究 | 236篇 |
各国文化 | 43篇 |
体育 | 413篇 |
综合类 | 3篇 |
文化理论 | 62篇 |
信息传播 | 455篇 |
出版年
2022年 | 23篇 |
2021年 | 43篇 |
2020年 | 59篇 |
2019年 | 116篇 |
2018年 | 141篇 |
2017年 | 154篇 |
2016年 | 146篇 |
2015年 | 101篇 |
2014年 | 118篇 |
2013年 | 941篇 |
2012年 | 131篇 |
2011年 | 128篇 |
2010年 | 149篇 |
2009年 | 135篇 |
2008年 | 146篇 |
2007年 | 144篇 |
2006年 | 109篇 |
2005年 | 95篇 |
2004年 | 99篇 |
2003年 | 82篇 |
2002年 | 96篇 |
2001年 | 66篇 |
2000年 | 107篇 |
1999年 | 74篇 |
1998年 | 74篇 |
1997年 | 67篇 |
1996年 | 74篇 |
1995年 | 55篇 |
1994年 | 63篇 |
1993年 | 59篇 |
1992年 | 44篇 |
1991年 | 68篇 |
1990年 | 51篇 |
1989年 | 45篇 |
1988年 | 36篇 |
1987年 | 45篇 |
1986年 | 44篇 |
1985年 | 42篇 |
1984年 | 47篇 |
1983年 | 37篇 |
1982年 | 31篇 |
1981年 | 34篇 |
1980年 | 29篇 |
1979年 | 22篇 |
1978年 | 29篇 |
1977年 | 36篇 |
1976年 | 27篇 |
1975年 | 20篇 |
1974年 | 22篇 |
1971年 | 12篇 |
排序方式: 共有4600条查询结果,搜索用时 15 毫秒
21.
22.
23.
Emer Van Ryswyk Richard Weeks Laura Bandick Michaela O’Keefe Andrew Vakulin Peter Catcheside 《European Journal of Sport Science》2017,17(2):144-151
Objectives: To improve well-being and performance indicators in a group of Australian Football League (AFL) players via a six-week sleep optimisation programme. Design: Prospective intervention study following observations suggestive of reduced sleep and excessive daytime sleepiness in an AFL group. Methods: Athletes from the Adelaide Football Club were invited to participate if they had played AFL senior-level football for 1–5 years, or if they had excessive daytime sleepiness (Epworth Sleepiness Scale [ESS] >10), measured via ESS. An initial education session explained normal sleep needs, and how to achieve increased sleep duration and quality. Participants (n?=?25) received ongoing feedback on their sleep, and a mid-programme education and feedback session. Sleep duration, quality and related outcomes were measured during week one and at the conclusion of the six-week intervention period using sleep diaries, actigraphy, ESS, Pittsburgh Sleep Quality Index, Profile of Mood States, Training Distress Scale, Perceived Stress Scale and the Psychomotor Vigilance Task. Results: Sleep diaries demonstrated an increase in total sleep time of approximately 20?min (498.8?±?53.8 to 518.7?±?34.3; p?<?.05) and a 2% increase in sleep efficiency (p?<?0.05). There was a corresponding increase in vigour (p?<?0.001) and decrease in fatigue (p?<?0.05). Conclusions: Improvements in measures of sleep efficiency, fatigue and vigour indicate that a sleep optimisation programme may improve athletes’ well-being. More research is required into the effects of sleep optimisation on athletic performance. 相似文献
24.
Within the school of thought known as Critical Thinking, identifying or finding missing assumptions is viewed as one of the principal thinking skills. Within the new subject in schools and colleges, usually called Critical Thinking, the skill of finding missing assumptions is similarly prominent, as it is in that subject's public examinations. In this article we examine how school‐ and college‐focused texts explain and teach ‘this very important skill’. The same texts also deal with the nature of assumptions, validity and the role of stated reasons in arguments, and the way these matters are tackled will also be examined in our inquiry. In addition we explore what respected contributors to the critical thinking movement have had to say about some of these issues. 相似文献
25.
Peter Wood 《Academic Questions》2017,30(2):245-252
26.
摘要:心血管疾病(CVD)一直是全世界最主要的死因。由于CVD等慢性疾病对健康的威胁越来越大,有必要开展生活方式干预项目以控制这些疾病的危险因素。本研究的目的是评估美国的重要慢病干预项目—HELPS治疗型生活方式改变(TLC)项目对减少CVD危险因素和其他慢性疾病的有效性。方法:140位大学教职工参加为期12周的HELPS TLC项目,干预前后用配对t检验对其体重、BMI、腰围(WC)、6分钟步行距离(6MWD)、空腹血脂和血糖进行测定和比较。结果:干预后6MWD显著增加,总胆固醇(TC)和WC显著下降。对“高危”参与者进一步分析显示:BMI(-1.5±0.5,-3.9%)、TC(- 22.8±4.0,-9.0%)、LDL(- 14.1±4.9,9.3%)和血糖(-6.9±2.2,-6.1%)均显著下降;男性腰围(-4.5±0.8,-10%)显著减小,女性未见显著改变(-1.5±0.5,-4.0%)。此外,体重的变化与TC(r=0.43)、LDL(r=0.35)和血糖(r=0.44)的变化均显著相关。结论:参加12周的生活方式干预项目可以使CVD危险因素减少,特别是在CVD“高危”个体中。HELPS TLC项目的远期效果还待进一步深入研究。 相似文献
27.
Cherie Walker John Warmenhoven Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(2):146-162
Based on technological and analytical advances, the capability to more accurately and finitely examine biomechanical and skill characteristics of movement has improved. The purpose of this study was to use Inertial Measurement Units (IMUs) and Functional Principal Components Analysis (fPCA) to examine the role of movement variability (assessed via angular velocity), on 2 divers (1 international level; 1 national) performing the forward 3½ pike somersault dive. Analysis of angular velocity curves during ive-flight identified 5 fPCs, accounting for 96.5% of movement variability. The national diver’s scatter plots and standard deviation of fPC scores illustrated larger magnitudes of angular velocity variability across dive flight. For fPC1 and fPC3, magnitudes of SD variability were 282.6 and 201.5, respectively. The international diver illustrated more consistent angular velocity profiles, with clustering of fPCs scores (e.g., fPC1 & 3 = SD’s of 75.2 & 68.0). To account for lower variability in the international diver, the ability to better coordinate movement sequences and functionally utilise feedback in response to initiation of the somersault position is highlighted. Overall, findings highlight how both IMUs and fPCA can more holistically and finitely examine the biomechanical and skill characteristics of movement sequences with the capability to inform athlete development. 相似文献
28.
29.
Peter Wood 《Academic Questions》2014,27(2):244-251
30.
Peter Wood 《Academic Questions》2015,28(4):495-501