全文获取类型
收费全文 | 2934篇 |
免费 | 62篇 |
国内免费 | 1篇 |
专业分类
教育 | 2357篇 |
科学研究 | 80篇 |
各国文化 | 48篇 |
体育 | 111篇 |
综合类 | 1篇 |
文化理论 | 17篇 |
信息传播 | 383篇 |
出版年
2023年 | 14篇 |
2022年 | 22篇 |
2021年 | 41篇 |
2020年 | 89篇 |
2019年 | 102篇 |
2018年 | 143篇 |
2017年 | 145篇 |
2016年 | 134篇 |
2015年 | 85篇 |
2014年 | 120篇 |
2013年 | 688篇 |
2012年 | 84篇 |
2011年 | 82篇 |
2010年 | 71篇 |
2009年 | 78篇 |
2008年 | 87篇 |
2007年 | 74篇 |
2006年 | 84篇 |
2005年 | 77篇 |
2004年 | 73篇 |
2003年 | 39篇 |
2002年 | 44篇 |
2001年 | 32篇 |
2000年 | 32篇 |
1999年 | 38篇 |
1998年 | 28篇 |
1997年 | 35篇 |
1996年 | 43篇 |
1995年 | 24篇 |
1994年 | 29篇 |
1993年 | 18篇 |
1992年 | 17篇 |
1991年 | 21篇 |
1990年 | 24篇 |
1989年 | 12篇 |
1988年 | 9篇 |
1987年 | 14篇 |
1986年 | 15篇 |
1985年 | 22篇 |
1984年 | 16篇 |
1983年 | 10篇 |
1982年 | 14篇 |
1981年 | 8篇 |
1980年 | 8篇 |
1979年 | 17篇 |
1978年 | 9篇 |
1977年 | 17篇 |
1975年 | 12篇 |
1974年 | 15篇 |
1972年 | 7篇 |
排序方式: 共有2997条查询结果,搜索用时 46 毫秒
121.
122.
123.
124.
125.
Early Childhood Education Journal - 相似文献
126.
127.
128.
129.
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
130.
Elizabeth Nelson 《College & Undergraduate Libraries》2015,22(3-4):312-324
Businesses have long relied on a variety of strategies to improve quality, efficiency, and service. Some ideas that have persisted over time are Six Sigma and Lean. While Six Sigma, originally intended for manufacturing, focuses on quality and Lean mainly addresses waste, many of the tools and principles involved can also apply to libraries. This article will review the literature on Lean and Six Sigma as they are used in business and then as they have been used in libraries. The resulting discussion will cover how the principles can be applied to better connect with stakeholders by mapping processes and discovering what is value added (VA) versus nonvalue added (NVA), anticipating failure modes using the failure mode and effects analysis (FMEA) framework, and implementing control plans to maintain quality processes and service. 相似文献