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   120403篇
  免费   1871篇
  国内免费   235篇
教育   83738篇
科学研究   13394篇
各国文化   1988篇
体育   9186篇
综合类   172篇
文化理论   1059篇
信息传播   12972篇
  2022年   517篇
  2021年   935篇
  2020年   1646篇
  2019年   2554篇
  2018年   3053篇
  2017年   3330篇
  2016年   3385篇
  2015年   2303篇
  2014年   3183篇
  2013年   27319篇
  2012年   2312篇
  2011年   2668篇
  2010年   2311篇
  2009年   2608篇
  2008年   2357篇
  2007年   2084篇
  2006年   2319篇
  2005年   2316篇
  2004年   3003篇
  2003年   2305篇
  2002年   2134篇
  2001年   2005篇
  2000年   1662篇
  1999年   1543篇
  1998年   1462篇
  1997年   1522篇
  1996年   1695篇
  1995年   1463篇
  1994年   1459篇
  1993年   1469篇
  1992年   1489篇
  1991年   1390篇
  1990年   1392篇
  1989年   1309篇
  1988年   1197篇
  1987年   1092篇
  1986年   1132篇
  1985年   1399篇
  1984年   1268篇
  1983年   1254篇
  1982年   1246篇
  1981年   1172篇
  1980年   1161篇
  1979年   1219篇
  1978年   1201篇
  1977年   1040篇
  1976年   853篇
  1975年   688篇
  1974年   686篇
  1973年   657篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
981.
982.
983.
Counselors (N = 911) reported the research skills needed for practice and subsequent research training needs. Findings indicate that counselors have a high need for research skills at work, but training needs differ significantly by counselor type. Recommendations include increasing emphasis on single‐case design, survey design, and widely available data analysis tools.  相似文献   
984.
985.
Objective: To analyze the possible dose-response association between components of sports participation (intensity, volume and previous engagement) and 4-year mortality rates among Brazilian adults.

Methods: 679 males and females (mean age among men = 66.7 ± 9.3 years old and mean age among women = 64.8 ± 8.9 years old) composed the study sample. Sports participation was assessed using Baecke’s questionnaire, which considers intensity, duration and previous engagement. Medical records were used to identify the cause of the death. Cox regression analysis was performed to determine the independent associations of exercise components and mortality.

Results: Participants that reported exercising at moderate-vigorous intensity (Moderate/vigorous: 4.1% versus None/light: 10.3% [p-value = 0.012]; HR = 0.42 [0.1 to 0.94)] and for more than four months (≥4 months: 5.3% versus <4 months: 10.2% [p-value = 0.038]; HR = 0.47 [0.24 to 0.94]) had lower mortality risk. The percentage of survival according to all-cause mortality was significantly higher for participants engaged in sports at moderate-vigorous intensity (p-value = 0.014), as well as for those engaged in sports for periods superior than four months (p-value = 0.036).

Conclusion: We found higher percentage of survival among adults engaged in sports at moderate-vigorous intensity and with at least four months of previous engagement.  相似文献   

986.
987.
In this essay, Jennifer Morton discusses educators as central examples of agents who engage in ideal and nonideal ways of thinking. The educator, as a representative of the political community, is tasked with two aims. The first is nurturing students with the skills and knowledge they need for the world as they will find it. In pursuing this goal, the educator is assuming certain social facts, some of them unjust, that constitute the present nonideal world. The second aim is civic — educating future citizens. Insofar as the educator is involved in pursuing this goal, his or her role is to work at making certain future social facts true, in the hope of making the future slightly more ideal. Morton argues that if we think of these two aims instrumentally, they can come into conflict. She does not suggest a resolution to this conflict, but rather develops an alternative expressive account of the civic role of the educator. Ideal thinking by educators, Morton maintains, should be thought of as constituting an expression of respect toward their fellow citizens here and now. Ultimately, she argues that this expressive component of the educator's job is crucial to the educator's role in the political community.  相似文献   
988.
In fall 2016, the Columbia-Cornell collaboration in the area of Slavic & East European resource coordination and sharing celebrated its sixth year. The author reviews particulars of the development, implementation, and function of this program as well as some of the challenges that face such cross-institutional efforts.  相似文献   
989.
N. Mukunda 《Resonance》2011,16(9):796-797
  相似文献   
990.
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