全文获取类型
收费全文 | 2543篇 |
免费 | 33篇 |
国内免费 | 2篇 |
专业分类
教育 | 1837篇 |
科学研究 | 142篇 |
各国文化 | 29篇 |
体育 | 244篇 |
文化理论 | 31篇 |
信息传播 | 295篇 |
出版年
2023年 | 9篇 |
2022年 | 11篇 |
2021年 | 31篇 |
2020年 | 43篇 |
2019年 | 74篇 |
2018年 | 88篇 |
2017年 | 94篇 |
2016年 | 79篇 |
2015年 | 44篇 |
2014年 | 60篇 |
2013年 | 633篇 |
2012年 | 77篇 |
2011年 | 79篇 |
2010年 | 49篇 |
2009年 | 53篇 |
2008年 | 69篇 |
2007年 | 69篇 |
2006年 | 55篇 |
2005年 | 64篇 |
2004年 | 67篇 |
2003年 | 59篇 |
2002年 | 49篇 |
2001年 | 32篇 |
2000年 | 43篇 |
1999年 | 35篇 |
1998年 | 19篇 |
1997年 | 31篇 |
1996年 | 39篇 |
1995年 | 24篇 |
1994年 | 25篇 |
1993年 | 34篇 |
1992年 | 29篇 |
1991年 | 37篇 |
1990年 | 20篇 |
1989年 | 14篇 |
1988年 | 29篇 |
1987年 | 22篇 |
1986年 | 17篇 |
1985年 | 20篇 |
1984年 | 18篇 |
1983年 | 20篇 |
1982年 | 18篇 |
1981年 | 25篇 |
1980年 | 17篇 |
1979年 | 20篇 |
1978年 | 20篇 |
1977年 | 21篇 |
1976年 | 15篇 |
1974年 | 8篇 |
1972年 | 9篇 |
排序方式: 共有2578条查询结果,搜索用时 421 毫秒
111.
112.
Mark P. Moresi Elizabeth J. Bradshaw David A. Greene Geraldine A. Naughton 《Journal of sports sciences》2015,33(2):180-191
Double-leg repeated jumping tasks are commonly used as measures of lower limb stiffness in exercise science research. Within similar stiffness calculations, variation in data-reduction criteria exists. The impact of these varied data-reduction methods on stiffness measures is unknown. Sixteen adolescent female participants from varied physical activity backgrounds performed 15 self-paced, bent-knee continuous jumps (CJb) on two force plates. Leg stiffness was calculated as the ratio of the peak force and the centre of mass displacement for each contact. Using combinations of criteria based on previous literature, 83 data-reduction methods were applied to the raw data. Data reduction suitability was assessed based on intra-trial reliability, the number of participants excluded and the average contacts excluded. Four data-reduction methods were deemed suitable for use with adolescent female populations, with three consecutive contacts within 1 SD of the average jump frequency considered optimal. The average individual stiffness values were not greatly influenced by the data-reduction method; however, for a single participant, a stiffness change of up to 6 kN · m?1 (30%) was observed. The role and potential impact of data-reduction methods used to evaluate measures of lower limb stiffness during repeated jumping tasks warrants consideration. 相似文献
113.
114.
115.
116.
117.
118.
Although research has demonstrated that an increased rapport between instructors and learners can positively relate with increased learning gains, perhaps mediated by the positive attitudes toward the course and self-efficacy beliefs in the coursework, little has been done to test what instructional strategies might increase this rapport in online video-based instruction. This study compared online video-based instruction that made use of relationship-building strategies with online video-based instruction that did not use those strategies. The two instructions were identical in every other way. The results show that the attitudes of the college students were positively affected by the relationship building strategies in a statistically significant way (p = .025) and that learning gains were also positively affected at a very near-significant level (p = .052). The implications of the findings are discussed. 相似文献
119.
Alan F. Chow 《Educational studies》2015,41(3):244-248
This evaluation examines the impact on student success rates related to changes in instructional programmes in undergraduate mathematics and statistics courses. Success for students taking courses with a computer-based homework component was compared with success of students who took the course in prior semesters without the computer-based component. Graphical and analytical tools are used to compare results. Results come from multiple semesters of each type of homework application, for both pre-calculus algebra and business statistics courses. Students whose performance is utilised in this study are undergraduate students taking introductory level college mathematics or business statistics courses, with mostly no prior instruction at this level. Comparing the success of the intervention group with the success of the baseline control group, findings support that the students using the computer-based homework instruction are just as successful as those using the traditional method of homework instruction. Utilising the online homework applications, provide several important advantages in today’s universities, including the reduced time for faculty grading, consistency of graded assignments across all sections of a course and most importantly, immediate feedback for students. 相似文献
120.