全文获取类型
收费全文 | 4200篇 |
免费 | 58篇 |
国内免费 | 1篇 |
专业分类
教育 | 3302篇 |
科学研究 | 152篇 |
各国文化 | 44篇 |
体育 | 425篇 |
综合类 | 2篇 |
文化理论 | 34篇 |
信息传播 | 300篇 |
出版年
2022年 | 18篇 |
2021年 | 22篇 |
2020年 | 38篇 |
2019年 | 79篇 |
2018年 | 87篇 |
2017年 | 110篇 |
2016年 | 86篇 |
2015年 | 70篇 |
2014年 | 140篇 |
2013年 | 1031篇 |
2012年 | 125篇 |
2011年 | 129篇 |
2010年 | 123篇 |
2009年 | 135篇 |
2008年 | 96篇 |
2007年 | 94篇 |
2006年 | 96篇 |
2005年 | 59篇 |
2004年 | 44篇 |
2003年 | 49篇 |
2002年 | 54篇 |
2001年 | 45篇 |
2000年 | 73篇 |
1999年 | 55篇 |
1998年 | 42篇 |
1997年 | 34篇 |
1996年 | 62篇 |
1995年 | 115篇 |
1994年 | 65篇 |
1993年 | 81篇 |
1992年 | 96篇 |
1991年 | 89篇 |
1990年 | 67篇 |
1989年 | 38篇 |
1988年 | 30篇 |
1987年 | 31篇 |
1986年 | 24篇 |
1985年 | 30篇 |
1984年 | 26篇 |
1983年 | 18篇 |
1982年 | 30篇 |
1981年 | 32篇 |
1980年 | 34篇 |
1979年 | 74篇 |
1978年 | 59篇 |
1977年 | 53篇 |
1976年 | 37篇 |
1975年 | 28篇 |
1974年 | 28篇 |
1972年 | 14篇 |
排序方式: 共有4259条查询结果,搜索用时 15 毫秒
41.
42.
Jordan J. Smith Philip J. Morgan Ronald C. Plotnikoff David F. Stodden David R. Lubans 《Journal of sports sciences》2016,34(8):772-779
The purpose of this study was to examine the mediating effect of resistance training skill competency on percentage of body fat, muscular fitness and physical activity among a sample of adolescent boys participating in a school-based obesity prevention intervention. Participants were 361 adolescent boys taking part in the Active Teen Leaders Avoiding Screen-time (ATLAS) cluster randomised controlled trial: a school-based program targeting the health behaviours of economically disadvantaged adolescent males considered “at-risk” of obesity. Body fat percentage (bioelectrical impedance), muscular fitness (hand grip dynamometry and push-ups), physical activity (accelerometry) and resistance training skill competency were assessed at baseline and post-intervention (i.e., 8 months). Three separate multi-level mediation models were analysed to investigate the potential mediating effects of resistance training skill competency on each of the study outcomes using a product-of-coefficients test. Analyses followed the intention-to-treat principle. The intervention had a significant impact on the resistance training skill competency of the boys, and improvements in skill competency significantly mediated the effect of the intervention on percentage of body fat and the combined muscular fitness score. No significant mediated effects were found for physical activity. Improving resistance training skill competency may be an effective strategy for achieving improvements in body composition and muscular fitness in adolescent boys. 相似文献
43.
44.
45.
ABSTRACTBlended learning has been a feature of higher education practice and research for almost two decades. This article takes stock of current blended learning research, contributing to the growing number of meta-analyses of higher education and blended learning research more generally, through a review of ninety-seven articles relating to blended learning in higher education published in fifteen journals between 2012 and mid-2017. The review focused on where and when the articles were published; their provenance, scale, scope; methodological approach; the broad research themes; and definition of blended learning used. The review shows that despite its ubiquity, blended learning’s definition is all-encompassing; its spread is global but research is dominated by key players; it is of technical interest; and its research is small-scale, individually focused, seeking to evidence the benefits of blended learning. The article concludes with recommendations of how higher education research could provide institutions with evidence to ensure their ‘best of blends’. 相似文献
46.
Dr. Richard W. Thoreson CarolAnne M. Kardash David A. Leuthold Kelly A. Morrow 《Research in higher education》1990,31(2):193-209
This study examines sources of satisfaction, indicators of stress, academic performance, and reward structure in the academic careers of male and female faculty at a major midwestern state university. Faculty pairs were selected from five academic divisions. A total of 58 matched pairs were identified. Of these, 63 faculty responded, yielding data for 23 matched pairs. Subjects were mailed the Academic Career Development Survey, consisting of 144 items. Results indicated that self-reported physical and mental health, and professional and personal life satisfaction were high for both males and females. Both males and females placed high importance on their career and on marriage/other intimate relationships; however, both reported high levels of dissatisfaction with these factors. Gender differences were found in both satisfaction and type of stress reported; no gender differences were found in composite teaching and research performance indices. Salary data, obtained for 42 matched pairs, indicated similar salary levels for men and women. Results were discussed with respect to prior research on gender differences and the academic career. 相似文献
47.
Sandra Smith 《Annals of dyslexia》1992,42(1):141-158
Extended families of 12 young adults (9 LD, 3 non-LD) were given a battery of tests and questionnaires, and 131 persons, ranging
in age from 6 to 85, were classified as LD or non-LD on the basis of subtest scores 1 SD below the mean or less on subtests
of the PIAT and WRAT achievement tests. Pedigree analysis indicated that LD was strongly familial, with the most probable
mode involving a major gene effect, but the type of disability (reading/ math) was not directly inherited. Autoimmune disorders
were significantly correlated (P<.005) with LD, especially in families in which LD remained a major handicap into adulthood,
a trait that also varied between families. In two of the LD families, adults showed little evidence of the reading/spelling
deficits they had shown when tested as children, while adults in other families failed to make gains in reading and spelling. 相似文献
48.
Carol A. Smith Rodney Parks Jesse Parrish Ryan Swirski 《Journal of Adventure Education & Outdoor Learning》2018,18(1):1-14
Technology plays an integral role in the lives of the majority of the US population. As technology becomes integrated into young people’s lives, questions arise regarding its effects on learning. This exploratory study draws on interviews with students who attend university in the United States to determine how separating students from technology deepens experiential learning. Participants were interviewed following a study abroad course to New Zealand, during which they were disconnected from technologies such as cell phones, the Internet and social media. In the interviews, students discussed their feelings of being disconnected and describe how disconnecting impacted their overall experience. Participants agreed that disconnecting from technology had positive effects on experiential learning and the global experience. Major themes that emerged include students’ enhanced immersion and engagement, the value of disconnection in providing opportunities for personal growth and the difficulty of initial separation from technology as a result of conditioning. 相似文献
49.
50.
Elizabeth Overman Smith 《Technical Communication Quarterly》1996,5(4):365-383
Electronic databases provide access to resources in business, communication, education, applied science and technology, and the social sciences. This article identifies the databases that monitor the journals most frequently cited by technical and professional communication researchers. 相似文献