首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   20130篇
  免费   384篇
  国内免费   315篇
教育   14072篇
科学研究   2824篇
各国文化   137篇
体育   1429篇
综合类   1137篇
文化理论   36篇
信息传播   1194篇
  2024年   3篇
  2023年   47篇
  2022年   167篇
  2021年   274篇
  2020年   391篇
  2019年   327篇
  2018年   302篇
  2017年   294篇
  2016年   336篇
  2015年   544篇
  2014年   1927篇
  2013年   2329篇
  2012年   2064篇
  2011年   1834篇
  2010年   1562篇
  2009年   1458篇
  2008年   1470篇
  2007年   887篇
  2006年   861篇
  2005年   810篇
  2004年   722篇
  2003年   706篇
  2002年   478篇
  2001年   323篇
  2000年   213篇
  1999年   109篇
  1998年   72篇
  1997年   75篇
  1996年   39篇
  1995年   38篇
  1994年   31篇
  1993年   25篇
  1992年   25篇
  1991年   17篇
  1990年   6篇
  1989年   25篇
  1988年   1篇
  1987年   2篇
  1986年   2篇
  1985年   6篇
  1984年   4篇
  1983年   2篇
  1982年   6篇
  1981年   5篇
  1980年   1篇
  1979年   4篇
  1978年   5篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
In this interview, conducted via email during August 2016, Dr. Arlene G. Taylor discusses her career as a cataloger, professor of cataloging and classification, and her work in professional associations. Topics include her early cataloging and teaching experiences, changes in both cataloging practice and the teaching of cataloging, subject analysis, and “aboutness” as compared with form/genre access, professional experiences outside the United States, and the future of MLIS programs.  相似文献   
92.
九十年代的报告文学创作表现出重归理性的写作风格,由衷地歌颂社会进步和英雄人物,理性地剖析批判社会问题,沉静深入地挖掘历史是其发展的三大特点。在社会全面转型的九十年代,报告文学创作的价值是不应被轻易否定的。  相似文献   
93.
简要介绍了一种基于Labwindows/CVI下的随机相关辨识的方法,实现了用虚拟仪器设计系统辨识仿真仪.  相似文献   
94.
This paper offers the experiences and insights of two faculty members, located in two separate disciplines, as they engaged in collaborative research. While knowledge created by stepping out and reaching across disciplines reflects the reality of an increasingly complex world, their experiences highlight both the benefits of a supportive collaborative partnership as well as the risks and discomfort experienced without tangible discipline support, when researchers stray too far from their home discipline. While transparency and attention to process is critical to all researchers engaged in collaborative partnership, its necessity is heightened when venturing beyond the territory of familiar disciplines.  相似文献   
95.
利用欧氏空间向量内积的性质,对于文[1]中Kelly问题的Wolliam Kruskal猜想证明了m(d,d r)≥√d 3r,并给出了m(2,5)与m(2,6)的最小值.  相似文献   
96.
谈义乌市公示语的英译   总被引:1,自引:0,他引:1  
良好的国际化语言环境是国际化城市建设的保证。义鸟市公示语英译还存在着浮于表面的解读、选词欠地道、简单的字字对应、不规范的书写等不足。针对这些问题,建议采取建立行政管理机构、推行翻译人员持证上岗制度、加强公众舆论监督等具体措施。  相似文献   
97.
全文分析了高校图书馆员继续教育的现状,阐述了继续教育后续跟踪机制的建立原则,探讨了继续教育后续跟踪机制的构成要素.  相似文献   
98.
The prevalence of ischaemia-related symptoms is remarkably high among elite indoor volleyball players. Since the exposure to sport-specific demands may be higher in beach volleyball compared to indoor volleyball, the aim of this study was to assess the prevalence of ischaemia-related symptoms and associated risk factors among world-class beach volleyball players. Therefore, a questionnaire survey was performed among beach volleyball players active during the 2013 Grand Slam Beach Volleyball in the Netherlands. In total, 60 of the 128 beach volleyball players (47%) participated: 26 males and 34 females from 17 countries. The self-reported prevalence of cold or blue or pale digits in the dominant hand during or immediately after practice or competition was 38% (n = 23). Two risk factors were independently associated with symptoms of blue or pale digits: more than 14 years playing volleyball (odds ratio (OR) 4.42, 90% confidence interval (90% CI) 1.30–15.07) and sex (female) (OR 4.62, 90% CI 1.15–18.57). In conclusion, the prevalence of symptoms associated with digital ischaemia is high among international world-class beach volleyball players. Female sex and the length of the volleyball career were independently associated with an increased risk of ischaemia-related symptoms. The high prevalence of these seemingly innocuous symptoms and possible associated risk factors warrant regular monitoring since early detection can potentially prevent thromboembolic complications and irreversible tissue damage.  相似文献   
99.
The analysis of the joint kinematics during swimming plays a fundamental role both in sports conditioning and in clinical contexts. Contrary to the traditional video analysis, wearable inertial-magnetic measurements units (IMMUs) allow to analyse both the underwater and aerial phases of the swimming stroke over the whole length of the swimming pool. Furthermore, the rapid calibration and short data processing required by IMMUs provide coaches and athletes with an immediate feedback on swimming kinematics during training. This study aimed to develop a protocol to assess the three-dimensional kinematics of the upper limbs during swimming using IMMUs. Kinematics were evaluated during simulated dry-land swimming trials performed in the laboratory by eight swimmers. A stereo-photogrammetric system was used as the gold standard. The results showed high coefficient of multiple correlation (CMC) values, with median (first–third quartile) of 0.97 (0.93–0.95) and 0.99 (0.97–0.99) for simulated front-crawl and breaststroke, respectively. Furthermore, the joint angles were estimated with an accuracy increasing from distal to proximal joints, with wrist indices showing median CMC values always higher than 0.90. The present findings represent an important step towards the practical use of technology based on IMMUs for the kinematic analysis of swimming in applied contexts.  相似文献   
100.
第三代领导集体建设有中国特色社会主义民主政治的思想是邓小平理论的重要组成部分,是对邓小平理论的继承与坚持,进一步丰富和发展了马克思主义关于社会主义民主政治的理论,是对马列主义、毛泽东思想、邓小平理论的贡献与发展。第三代领导集体有中国特色社会主义民主政治思想有着其形成过程、主要特点及其意义作用。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号