全文获取类型
收费全文 | 2412篇 |
免费 | 41篇 |
专业分类
教育 | 1784篇 |
科学研究 | 156篇 |
各国文化 | 45篇 |
体育 | 228篇 |
综合类 | 1篇 |
文化理论 | 13篇 |
信息传播 | 226篇 |
出版年
2023年 | 9篇 |
2022年 | 12篇 |
2021年 | 14篇 |
2020年 | 43篇 |
2019年 | 91篇 |
2018年 | 107篇 |
2017年 | 93篇 |
2016年 | 66篇 |
2015年 | 55篇 |
2014年 | 64篇 |
2013年 | 528篇 |
2012年 | 65篇 |
2011年 | 91篇 |
2010年 | 51篇 |
2009年 | 66篇 |
2008年 | 80篇 |
2007年 | 58篇 |
2006年 | 70篇 |
2005年 | 58篇 |
2004年 | 63篇 |
2003年 | 54篇 |
2002年 | 29篇 |
2001年 | 34篇 |
2000年 | 52篇 |
1999年 | 32篇 |
1998年 | 26篇 |
1997年 | 23篇 |
1996年 | 18篇 |
1995年 | 15篇 |
1994年 | 29篇 |
1993年 | 16篇 |
1992年 | 26篇 |
1991年 | 17篇 |
1990年 | 18篇 |
1989年 | 25篇 |
1988年 | 18篇 |
1987年 | 18篇 |
1986年 | 17篇 |
1985年 | 18篇 |
1984年 | 20篇 |
1983年 | 16篇 |
1982年 | 9篇 |
1981年 | 14篇 |
1980年 | 9篇 |
1979年 | 17篇 |
1978年 | 8篇 |
1977年 | 11篇 |
1972年 | 8篇 |
1927年 | 8篇 |
1926年 | 10篇 |
排序方式: 共有2453条查询结果,搜索用时 15 毫秒
1.
Jonathan S. Jones Anna-Lynne R. Adlam Abdelmalek Benattayallah Fraser N. Milton 《Child development》2022,93(3):815-830
Working memory training improves children's cognitive performance on untrained tasks; however, little is known about the underlying neural mechanisms. This was investigated in 32 typically developing children aged 10–14 years (19 girls and 13 boys) using a randomized controlled design and multi-modal magnetic resonance imaging (Devon, UK; 2015–2016). Training improved working memory performance and increased intrinsic functional connectivity between the bilateral intraparietal sulci. Furthermore, improvements in working memory were associated with greater recruitment of the left middle frontal gyrus on a complex span task. Repeated engagement of fronto-parietal regions during training may increase their activity and functional connectivity over time, affording greater working memory performance. The plausibility of generalizable cognitive benefits from a neurobiological perspective and implications for neurodevelopmental theory are discussed. 相似文献
2.
ABSTRACT Full three-dimensional movements and external moments in golfers’ knees and the possible involvement in injuries have not been evaluated using motion capture at high sample frequencies. This study measured joint angles and external moments around the three anatomical axes in both knees of 10 professional golfers performing golf drives whilst standing on two force plates in a motion capture laboratory. Significant differences were found in the knee joint moments between the lead and trail limbs for the peak values and throughout all stages during the swing phase. A significantly higher net abduction moment impulse was seen in the trail limb compared with the lead limb (?0.518 vs. ?0.135 Nms.kg?1), indicating greater loading over the whole swing, which could contribute to knee lateral compartment or anterior cruciate ligament injuries. A significant correlation (r = ?0.85) between clubhead speed at ball contact and maximum joint moment was found, with the largest correlations being found for joint moments at the top of the backswing event and at the end of the follow-through. Therefore, although knee moments can contribute to high clubhead speeds, the large moments and impulses suggest that they may also contribute to chronic knee injuries or exacerbate existing conditions. 相似文献
3.
Guilherme Giannini Artioli Craig Sale Rebecca Louise Jones 《European Journal of Sport Science》2019,19(1):30-39
AbstractCarnosine was originally discovered in skeletal muscle, where it exists in larger amounts than in other tissues. The majority of research into the physiological roles of carnosine have been conducted on skeletal muscle. Given this and the potential for muscle carnosine content to be increased with supplementation, there is now a large body of research examining the ergogenic effects (or otherwise) of carnosine. More recent research, however, points towards a potential for carnosine to exert a wider range of physiological effects in other tissues, including the brain, heart, pancreas, kidney and cancer cells. Taken together, this is suggestive of a potential for carnosine to have therapeutic benefits in health and disease, although this is by no means without complication. Herein, we will provide a review of the current literature relating to the potential therapeutic effects of carnosine in health and disease. 相似文献
4.
21世纪是高科技飞跃发展的知识经济社会,人才的竞争日趋激烈。因此推行素质教育是高等学校面向21世纪的重要任务。体育舞蹈是融体育、音乐、舞蹈为一体的新型体育课程,对全面培养大学生综合素质、增强大学生生理、心理健康、发展个性、审美能力的提高具有重要作用。 相似文献
5.
6.
Donald D. Deshler Jean B. Schumaker B. Keith Lenz Janis A. Bulgren Michael F. Hock Jim Knight Barbara J. Ehren 《Learning disabilities research & practice》2001,16(2):96-108
Three factors tied with secondary student success in content‐area reading are demonstrated: (a) validated teacher‐focused and student‐focused interventions, (b) integrated and comprehensive service delivery systems, and (c) well‐designed, data‐based professional developmental programs. Difficult challenges face secondary students with LD and their teachers with regard to these students’ participation and success in required general education classes. Recently, instructional methods and materials have been developed and validated for promoting these students’ success. Some of them focus on how general education teachers plan and teach their content‐area courses; others focus on giving students the strategies they need to respond independently to the demands of their courses. This article describes these instructional methods, a service‐delivery model for implementing these interventions in secondary schools, and professional‐development mechanisms and administrative support that must be in place for the model to be maintained effectively. 相似文献
7.
8.
9.
10.
One of the highest priorities in today's hospitals is the provision of quality care to patients. The medical librarian has an increased responsibility to furnish quality information to the medical staff. Traditional methods of reference service continue to work well, but it is increasingly important for librarians to become more directly involved in hospital quality assurance (QA) activities. Occurrence screening is one system of QA where the librarian can make a difference. 相似文献