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   120607篇
  免费   1881篇
  国内免费   238篇
教育   83640篇
科学研究   13348篇
各国文化   2016篇
体育   9431篇
综合类   173篇
文化理论   1072篇
信息传播   13046篇
  2021年   933篇
  2020年   1653篇
  2019年   2558篇
  2018年   3088篇
  2017年   3339篇
  2016年   3401篇
  2015年   2309篇
  2014年   3206篇
  2013年   27394篇
  2012年   2366篇
  2011年   2707篇
  2010年   2332篇
  2009年   2627篇
  2008年   2398篇
  2007年   2111篇
  2006年   2357篇
  2005年   2343篇
  2004年   3029篇
  2003年   2365篇
  2002年   2165篇
  2001年   2064篇
  2000年   1701篇
  1999年   1597篇
  1998年   1458篇
  1997年   1527篇
  1996年   1701篇
  1995年   1472篇
  1994年   1475篇
  1993年   1476篇
  1992年   1492篇
  1991年   1427篇
  1990年   1407篇
  1989年   1325篇
  1988年   1195篇
  1987年   1115篇
  1986年   1141篇
  1985年   1426篇
  1984年   1280篇
  1983年   1256篇
  1982年   1078篇
  1981年   1004篇
  1980年   963篇
  1979年   1071篇
  1978年   1036篇
  1977年   958篇
  1976年   856篇
  1975年   704篇
  1974年   701篇
  1973年   670篇
  1972年   507篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
991.
992.
993.
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   
994.
995.
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   

996.
997.
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   
998.
N. Mukunda 《Resonance》2011,16(9):796-797
  相似文献   
999.
1000.
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