全文获取类型
收费全文 | 20691篇 |
免费 | 618篇 |
国内免费 | 54篇 |
专业分类
教育 | 15962篇 |
科学研究 | 1254篇 |
各国文化 | 269篇 |
体育 | 1424篇 |
综合类 | 44篇 |
文化理论 | 118篇 |
信息传播 | 2292篇 |
出版年
2022年 | 134篇 |
2021年 | 253篇 |
2020年 | 346篇 |
2019年 | 530篇 |
2018年 | 716篇 |
2017年 | 760篇 |
2016年 | 684篇 |
2015年 | 529篇 |
2014年 | 664篇 |
2013年 | 4538篇 |
2012年 | 617篇 |
2011年 | 649篇 |
2010年 | 579篇 |
2009年 | 539篇 |
2008年 | 569篇 |
2007年 | 502篇 |
2006年 | 498篇 |
2005年 | 443篇 |
2004年 | 323篇 |
2003年 | 287篇 |
2002年 | 254篇 |
2001年 | 397篇 |
2000年 | 324篇 |
1999年 | 286篇 |
1998年 | 183篇 |
1997年 | 172篇 |
1996年 | 208篇 |
1995年 | 176篇 |
1994年 | 174篇 |
1993年 | 154篇 |
1992年 | 232篇 |
1991年 | 225篇 |
1990年 | 265篇 |
1989年 | 228篇 |
1988年 | 188篇 |
1987年 | 197篇 |
1986年 | 200篇 |
1985年 | 190篇 |
1984年 | 186篇 |
1983年 | 177篇 |
1982年 | 144篇 |
1981年 | 140篇 |
1980年 | 136篇 |
1979年 | 193篇 |
1978年 | 165篇 |
1977年 | 116篇 |
1976年 | 124篇 |
1975年 | 112篇 |
1973年 | 104篇 |
1971年 | 117篇 |
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
951.
952.
953.
954.
955.
956.
957.
958.
Using the case of FC Barcelona and Catalonia, this paper examines the relationship between national identity, social institutions and political values. Through different methods of qualitative research, we present an intergenerational comparison between age cohorts to capture continuities and discontinuities in the discursive linkage between FC Barcelona and national feelings of belonging. As the context has changed, the identity construction process should have changed in conjunction with it. The results point to how the old cohort tended to use Barça, as an escape valve, intertwined with Catalan nationalism and political freedom. In contrast, the young ones reproduce the old discourse leaving aside those political values formerly attached to the idea of Barça. 相似文献
959.
Background: Demonstration is a widely used method in sports teaching and coaching, based on the assumption that it is more beneficial than verbal instructions or trial-and-error methods for skill acquisition. Although in teaching/coaching situations, the demonstration is usually carried out in front of the learners, in a research context, it is most often presented via a video. However, a direct comparison between these two types of model has rarely been undertaken in a motor context.Purpose: In this study, we aimed to compare the effectiveness of the observation of a live and a videomodel for the early acquisition of a complex judo movement.Research Design: Participants observed either a live or a videomodel executing the task. After observation, they practised for three minutes taking five trials and then performed it for analysis. This procedure was repeated three times. The form and technique of each participant's execution were evaluated using a technical score.Main results: The results indicated a significant improvement in the task execution by the end of the practice session. However, this improvement occurred only for the video-model group between the second and third blocks of practice.Conclusions: The video demonstration seems more effective than the live one for the early acquisition of a completely new complex coordination. This may be due to the simplification of the visual information in the former condition because of its two-dimensionality. This simplification may allow the observer to identify the more key elements that would guide him/her for the subsequent performance of the task. 相似文献
960.
C. G. Olesen B. H. Larsen E. L. Andresen M. de Zee 《European Journal of Sport Science》2015,15(3):242-247
AbstractThe aim of this study was to develop a performance test set-up for America's Cup grinders. The test set-up had to mimic the on-boat grinding activity and be capable of collecting data for analysis and evaluation of grinding performance. This study included a literature-based analysis of grinding demands and a test protocol developed to accommodate the necessary physiological loads. This study resulted in a test protocol consisting of 10 intervals of 20 revolutions each interspersed with active resting periods of 50 s. The 20 revolutions are a combination of both forward and backward grinding and an exponentially rising resistance. A custom-made grinding ergometer was developed with computer-controlled resistance and capable of collecting data during the test. The data collected can be used to find measures of grinding performance such as peak power, time to complete and the decline in repeated grinding performance. 相似文献