全文获取类型
收费全文 | 1494篇 |
免费 | 46篇 |
国内免费 | 2篇 |
专业分类
教育 | 1169篇 |
科学研究 | 85篇 |
各国文化 | 15篇 |
体育 | 117篇 |
文化理论 | 8篇 |
信息传播 | 148篇 |
出版年
2023年 | 8篇 |
2022年 | 14篇 |
2021年 | 19篇 |
2020年 | 28篇 |
2019年 | 60篇 |
2018年 | 73篇 |
2017年 | 71篇 |
2016年 | 53篇 |
2015年 | 32篇 |
2014年 | 35篇 |
2013年 | 338篇 |
2012年 | 48篇 |
2011年 | 44篇 |
2010年 | 28篇 |
2009年 | 31篇 |
2008年 | 39篇 |
2007年 | 32篇 |
2006年 | 35篇 |
2005年 | 29篇 |
2004年 | 35篇 |
2003年 | 35篇 |
2002年 | 25篇 |
2001年 | 20篇 |
2000年 | 21篇 |
1999年 | 23篇 |
1998年 | 14篇 |
1997年 | 18篇 |
1996年 | 27篇 |
1995年 | 20篇 |
1994年 | 11篇 |
1993年 | 17篇 |
1992年 | 11篇 |
1991年 | 13篇 |
1990年 | 15篇 |
1989年 | 11篇 |
1988年 | 12篇 |
1986年 | 14篇 |
1985年 | 13篇 |
1984年 | 12篇 |
1983年 | 16篇 |
1982年 | 7篇 |
1981年 | 8篇 |
1980年 | 7篇 |
1979年 | 7篇 |
1978年 | 6篇 |
1977年 | 11篇 |
1976年 | 8篇 |
1975年 | 6篇 |
1974年 | 8篇 |
1890年 | 7篇 |
排序方式: 共有1542条查询结果,搜索用时 15 毫秒
1.
S Grant T Hasler C Davies T C Aitchison J Wilson A Whittaker 《Journal of sports sciences》2001,19(7):499-505
There is limited information on the anthropometry, strength, endurance and flexibility of female rock climbers. The aim of this study was to compare these characteristics in three groups of females: Group 1 comprised 10 elite climbers aged 31.3 +/- 5.0 years (mean +/- s) who had led to a standard of 'hard very severe'; Group 2 consisted of 10 recreational climbers aged 24.1 +/- 4.0 years who had led to a standard of 'severe'; and Group 3 comprised 10 physically active individuals aged 28.5 +/- 5.0 years who had not previously rock-climbed. The tests included finger strength (grip strength, finger strength measured on climbing-specific apparatus), flexibility, bent arm hang and pull-ups. Regression procedures (analysis of covariance) were used to examine the influence of body mass, leg length, height and age. For finger strength, the elite climbers recorded significantly higher values (P < 0.05) than the recreational climbers and non-climbers (four fingers, right hand: elite 321 +/- 18 N, recreational 251 +/- 14 N, non-climbers 256 +/- 15 N; four fingers, left hand: elite 307 +/- 14 N, recreational 248 +/- 12 N, non-climbers 243 +/- 11 N). For grip strength of the right hand, the elite climbers recorded significantly higher values than the recreational climbers only (elite 338 +/- 12 N, recreational 289 +/- 10 N, non-climbers 307 +/- 11 N). The results suggest that elite climbers have greater finger strength than recreational climbers and non-climbers. 相似文献
2.
3.
Wilson Bain 《Educational studies》1993,19(3):373-377
This paper assesses the significance of articles in the Scottish Government Yearbook, 1976‐92, for understanding of educational issues in that period. Experienced writers contributed 20 such articles on schooling, training, tertiary education, the Technical and Vocational Education Initiative, parental choice and devolved management. All are important for aspects of education systems in the United Kingdom, either because they concern distinctively Scottish approaches or they explore common themes across Britain and beyond. Many draw upon the history and cultures of Scottish and English education, to place educational policy in as broad a social context as is possible within the compass of 10 to 40 pages. The Yearbook has now metamorphosed into a quarterly, Scottish Affairs. It has played a distinctive role as an annual of record and debate to serve the present decade. 相似文献
4.
This study explores faculty deposits in institutional repositories (IR) within selected disciplines and identifies the diverse navigational paths to IR sites from library Web site homepages. The statistical relationship between the development of an IR and the presence of a Web site dedicated to the reform of traditional scholarly communication is also explored. The implications for the development of institutional repositories are highlighted. 相似文献
5.
6.
Facebook is challenging professional journalism. These challenges were evident in three incidents from 2016: the allegation that Facebook privileged progressive-leaning news on its trending feature; Facebook’s removal of the Pulitzer Prize-winning “Napalm Girl” photo from the pages of prominent users; and the proliferation of “fake news” during the US presidential election. Using theoretical concepts from the field of boundary work, this paper examines how The Guardian, The New York Times, Columbia Journalism Review and Poynter editorialized Facebook’s role in these three incidents to discursively construct the boundary between the value of professional journalism to democracy and Facebook’s ascendant role in facilitating essential democratic functions. Findings reveal that these publications attempted to define Facebook as a news organization (i.e., include it within the boundaries of journalism) so that they could then criticize the company for not following duties traditionally incumbent upon news organizations (i.e., place it outside the boundaries of journalism). This paper advances scholarship that focuses on both inward and outward conceptions of boundary work, further explores the complex challenge of defining who a journalist is in the face of rapidly changing technological norms, and advances scholarship in the field of media ethics that positions ethical analysis at the institutional level. 相似文献
7.
8.
9.
10.
Victoria A. Roach Graham M. Fraser James H. Kryklywy Derek G.V. Mitchell Timothy D. Wilson 《Anatomical sciences education》2019,12(1):32-42
Research suggests that spatial ability may predict success in complex disciplines including anatomy, where mastery requires a firm understanding of the intricate relationships occurring along the course of veins, arteries, and nerves, as they traverse through and around bones, muscles, and organs. Debate exists on the malleability of spatial ability, and some suggest that spatial ability can be enhanced through training. It is hypothesized that spatial ability can be trained in low-performing individuals through visual guidance. To address this, training was completed through a visual guidance protocol. This protocol was based on eye-movement patterns of high-performing individuals, collected via eye-tracking as they completed an Electronic Mental Rotations Test (EMRT). The effects of guidance were evaluated using 33 individuals with low mental rotation ability, in a counterbalanced crossover design. Individuals were placed in one of two treatment groups (late or early guidance) and completed both a guided, and an unguided EMRT. A third group (no guidance/control) completed two unguided EMRTs. All groups demonstrated an increase in EMRT scores on their second test (P < 0.001); however, an interaction was observed between treatment and test iteration (P = 0.024). The effect of guidance on scores was contingent on when the guidance was applied. When guidance was applied early, scores were significantly greater than expected (P = 0.028). These findings suggest that by guiding individuals with low mental rotation ability “where” to look early in training, better search approaches may be adopted, yielding improvements in spatial reasoning scores. It is proposed that visual guidance may be applied in spatial fields, such as STEMM (science, technology, engineering, mathematics and medicine), surgery, and anatomy to improve student's interpretation of visual content. Anat Sci Educ. © 2018 American Association of Anatomists. 相似文献