全文获取类型
收费全文 | 1771篇 |
免费 | 33篇 |
国内免费 | 1篇 |
专业分类
教育 | 1380篇 |
科学研究 | 121篇 |
各国文化 | 23篇 |
体育 | 126篇 |
综合类 | 1篇 |
文化理论 | 19篇 |
信息传播 | 135篇 |
出版年
2023年 | 5篇 |
2022年 | 27篇 |
2021年 | 36篇 |
2020年 | 53篇 |
2019年 | 61篇 |
2018年 | 92篇 |
2017年 | 100篇 |
2016年 | 94篇 |
2015年 | 49篇 |
2014年 | 59篇 |
2013年 | 362篇 |
2012年 | 69篇 |
2011年 | 60篇 |
2010年 | 49篇 |
2009年 | 37篇 |
2008年 | 47篇 |
2007年 | 48篇 |
2006年 | 40篇 |
2005年 | 46篇 |
2004年 | 38篇 |
2003年 | 35篇 |
2002年 | 33篇 |
2001年 | 29篇 |
2000年 | 25篇 |
1999年 | 23篇 |
1998年 | 13篇 |
1997年 | 10篇 |
1996年 | 10篇 |
1995年 | 9篇 |
1994年 | 13篇 |
1993年 | 17篇 |
1992年 | 9篇 |
1991年 | 13篇 |
1990年 | 14篇 |
1989年 | 17篇 |
1988年 | 9篇 |
1987年 | 15篇 |
1986年 | 6篇 |
1985年 | 16篇 |
1984年 | 9篇 |
1983年 | 5篇 |
1982年 | 6篇 |
1980年 | 5篇 |
1979年 | 8篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1971年 | 4篇 |
1885年 | 5篇 |
1882年 | 4篇 |
1880年 | 5篇 |
排序方式: 共有1805条查询结果,搜索用时 31 毫秒
81.
82.
83.
P C Van Wieringen H H Emmen R J Bootsma M Hoogesteger H T Whiting 《Journal of sports sciences》1989,7(2):153-162
Effects of video-feedback on improvement of the tennis service were investigated in subjects having at least 2 years of playing experience in tennis. The experiment was carried out in an indoor tennis hall under normal training conditions. Subjects were randomly divided into three groups: a video-feedback training (VFT) group, a traditional training (TT) group and a control group, each consisting of 22 subjects. While the subjects of the control group received no training at all, subjects in both the VFT and TT groups were trained twice weekly during 5 consecutive weeks. Each training session lasted 40 min, of which 30 min was spent on actual practice in training of the service. The remaining 10 min was spent on watching, analysing and discussing video recordings of either their own service performed during the training session (VFT group), or ground strokes and volleys of top level players (TT group). Both the VFT and TT group showed significantly greater improvements in both achievement scores and form (technique) scores than did the control group. No differences, however, could be demonstrated between the VFT and TT group, indicating that the subjects of the former group did not benefit from the video-feedback they received. While form scores correlated significantly (P less than 0.001) with the velocity of the served ball, no such relation between form scores and spatial accuracy was apparent. 相似文献
84.
85.
It has been argued that the Internet and social media increase the number of available viewpoints, perspectives, ideas and opinions available, leading to a very diverse pool of information. However, critics have argued that algorithms used by search engines, social networking platforms and other large online intermediaries actually decrease information diversity by forming so-called “filter bubbles”. This may form a serious threat to our democracies. In response to this threat others have developed algorithms and digital tools to combat filter bubbles. This paper first provides examples of different software designs that try to break filter bubbles. Secondly, we show how norms required by two democracy models dominate the tools that are developed to fight the filter bubbles, while norms of other models are completely missing in the tools. The paper in conclusion argues that democracy itself is a contested concept and points to a variety of norms. Designers of diversity enhancing tools must thus be exposed to diverse conceptions of democracy. 相似文献
86.
Licensing and the negotiating of electronic resources can be a daunting task for librarians who lack the proper skill sets and are unfamiliar with the intricacies of publisher agreements. Claire Dygert broke down the individual elements of a standard licensing agreement and explained the importance of protecting the rights of libraries. By providing insight from her years of experience, librarians learned how to develop a support network, build confidence, and be more effective negotiators. 相似文献
87.
88.
Fake news has become a prominent topic of public discussion, particularly among elites. Recent research has explored the prevalence of fake news during the 2016 election cycle and possible effects on electoral outcomes. This scholarship has not yet considered how elite discourse surrounding fake news may influence individual perceptions of real news. Through an experiment, this study explores the effects of elite discourse about fake news on the public’s evaluation of news media. Results show that exposure to elite discourse about fake news leads to lower levels of trust in media and less accurate identification of real news. Therefore, frequent discussion of fake news may affect whether individuals trust news media and the standards with which they evaluate it. This discourse may also prompt the dissemination of false information, particularly when fake news is discussed by elites without context and caution. 相似文献
89.
Kenneth Tobin Leonie Rennie Grady Venville Hye-Eun Chu Peter Fensham James Gallagher Reinders Duit Wolfgang Graeber Ed van den Berg Brian Hand Stephen Ritchie Justin Dillon 《Cultural Studies of Science Education》2011,6(3):783-793
For almost a half century David F. Treagust has been an exemplary science educator who has contributed through his dedication and commitments to students, curriculum development and collaboration with teachers, and cutting edge research in science education that has impacted the field globally, nationally and locally. A hallmark of his outstanding career is his collaborative style that inspires others to produce their best work. 相似文献
90.
Stephan Gerhard Huber Maren Hiltmann 《Educational Assessment, Evaluation and Accountability》2011,23(1):65-88
The professional demands on school leaders have changed drastically and have become highly complex in the last few years.
The professionalization of school leaders is high on the agenda. Human resource management includes different aspects of professionalization.
One major domain is the preparation, induction and continuous professional development of individual leaders and leadership
teams. Another is personnel marketing and selection, which includes the question of attracting capable future leaders and
of appointing the right candidates. However in Europe there is a need for standardised tools which provide systematic feedback
to professionals interested in assessing their strengths and individual development needs. Suitable instruments are still
scarce. The Competence Profile School Management CPSM (German: KompetenzProfil SchulManagement; KPSM) is the first online-based
self-assessment in the German language which has been designed to fit the school context and is based on psychometric principles.
It offers participants the possibility to reflect their strengths and weaknesses in different requirement areas of school
leadership; and to compare their individual results with peers from the school context, thus gaining valuable information
on their individual profiles when planning their professional development and careers. After sketching the theoretical and
empirical background, this article presents information about the aims and purpose of CPSM, the tool’s development, its test
scales and test formats, the results of the pilot study and those of the evaluation study. Then, the further development of
the tool in terms of modifications and add-ons are outlined, before, finally, the tool’s contribution to practice and research
is discussed. 相似文献