全文获取类型
| 收费全文 | 1077篇 |
| 免费 | 35篇 |
| 国内免费 | 1篇 |
专业分类
| 教育 | 866篇 |
| 科学研究 | 28篇 |
| 各国文化 | 15篇 |
| 体育 | 57篇 |
| 文化理论 | 7篇 |
| 信息传播 | 140篇 |
出版年
| 2023年 | 16篇 |
| 2022年 | 20篇 |
| 2021年 | 22篇 |
| 2020年 | 52篇 |
| 2019年 | 71篇 |
| 2018年 | 81篇 |
| 2017年 | 89篇 |
| 2016年 | 81篇 |
| 2015年 | 42篇 |
| 2014年 | 58篇 |
| 2013年 | 218篇 |
| 2012年 | 33篇 |
| 2011年 | 35篇 |
| 2010年 | 31篇 |
| 2009年 | 25篇 |
| 2008年 | 31篇 |
| 2007年 | 14篇 |
| 2006年 | 21篇 |
| 2005年 | 10篇 |
| 2004年 | 9篇 |
| 2003年 | 13篇 |
| 2002年 | 8篇 |
| 2001年 | 6篇 |
| 2000年 | 6篇 |
| 1999年 | 8篇 |
| 1998年 | 3篇 |
| 1996年 | 7篇 |
| 1995年 | 6篇 |
| 1993年 | 5篇 |
| 1992年 | 3篇 |
| 1990年 | 4篇 |
| 1989年 | 3篇 |
| 1987年 | 4篇 |
| 1985年 | 3篇 |
| 1984年 | 5篇 |
| 1981年 | 5篇 |
| 1980年 | 3篇 |
| 1979年 | 4篇 |
| 1978年 | 4篇 |
| 1976年 | 3篇 |
| 1975年 | 3篇 |
| 1974年 | 3篇 |
| 1973年 | 4篇 |
| 1972年 | 3篇 |
| 1971年 | 4篇 |
| 1968年 | 2篇 |
| 1967年 | 2篇 |
| 1966年 | 4篇 |
| 1964年 | 3篇 |
| 1961年 | 2篇 |
排序方式： 共有1113条查询结果，搜索用时 168 毫秒
1.
2.
3.
Genetics Home Reference is a free, online resource created and maintained by the National Library of Medicine. It is designed to provide genetic information to a wide variety of audiences, particularly the general public. The site consists of original information and links to other curated resources. 相似文献
4.
5.
Catherine P. Berei Erica Pratt Melissa Parker Kevin Shephard Tanjian Liang Udon Nampai 《Research quarterly for exercise and sport》2017,88(4):455-467
Purpose: Scholarship is essential for the growth and development of the physical education field. Over time, scholarship expectations have changed, forcing faculty members to alter time spent for research, teaching, and service. Social-cognitive career theory (SCCT) presents a model for understanding performance and persistence in an occupational environment. The interconnected aspects of SCCT have different emphasis related to self-efficacy, outcome expectations, or personal goals pursuit. This study explored physical education teacher education (PETE) faculty members’ continuing engagement in scholarly activity through SCCT. Method: Data collection included interviews with 9 senior PETE faculty members who met the criteria for “productive scholars over time.” Curriculum vitae were collected to verify productivity. Results: Data analysis revealed guidepost themes that included collaborating, finding balance, defining a research process, and maintaining a strong work ethic. Roadblocks encountered included other obligations and lack of support for research. Conclusions: Participants demonstrated strong self-efficacy; held high, positive expectations for success; and set very specific, clear, and deliberate goals. Participant behavior was moderated by their personal attributes (capacity to build relationships, set goals, and maintain interest and passion) and was tempered by the environments in which they worked. Fostering similar behaviors has the potential to guide future and current PETE faculty members in creating supportive and encouraging atmospheres for sustained productivity. The lack of literature relating to this topic warrants the need for more research exploring the influential factors and benefits gained from sustained scholarly productivity over time for PETE faculty members. 相似文献
6.
Kristina L. Kendall David H. Fukuda Parker N. Hyde Abbie E. Smith-Ryan Jordon R. Moon Jeffrey R. Stout 《Journal of sports sciences》2017,35(7):624-633
The purpose of this study was to investigate the accuracy of fat-free mass (FFM) estimates from two-compartment (2C) models including air displacement plethysmography (ADP), ultrasound (US), near-infrared interactance (NIR), and the Jackson and Pollock skinfold equation (SKF) against a criterion four-compartment (4C) model in elite male rowers. METHODS: Twenty-three elite-level male rowers (mean± SD; age 24.6 ± 2.2 years; stature: 191.4 ± 7.2 cm; mass: 87.2 ± 11.2 kg) participated in this investigation. All body composition assessments were performed on the same day in random order, except for hydrostatic weighing (HW), which was measured last. FFM was evaluated using a 4C model, which included total body water from bioimpedance spectroscopy, body volume from HW, and total body bone mineral via dual-energy X-ray absorptiometry. The major findings of the study were that the 2C models evaluated overestimated FFM and should be considered with caution for the assessment of FFM in elite male rowers. Future studies should use multiple-compartment models, with measurement of TBW and bone mineral content, for the estimation of FFM. 相似文献
7.
8.
9.
Jessica L. Ford Jacob S. Ford Seth S. Frei Andrew Pilny Brenda L. Berkelaar 《Journal of Applied Communication Research》2016,44(3):316-335
Persistent school shootings have generated ongoing pressure to assess and enhance crisis communication effectiveness via strategies such as resilience-building and post-crisis restoration. A network perspective offers a robust, multilevel approach for examining complex information flows among community, campus, and individual actors affected by crises. Drawing on relational and structural embeddedness and Uncertainty Management Theory, we offer nine propositions that help explain structural and relational changes in a network over time. Although theoretically driven, these propositions are primarily functional, offering practical implications for safety officials and administrators trying to understand, prepare for, and respond to crises. Thus, we suggest measures and recommendations to improve information flow, uncertainty management, and resilience before, during, and after a crisis. 相似文献
10.