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   13569篇
  免费   203篇
  国内免费   21篇
教育   9471篇
科学研究   1530篇
各国文化   129篇
体育   1166篇
综合类   6篇
文化理论   100篇
信息传播   1391篇
  2021年   139篇
  2020年   199篇
  2019年   275篇
  2018年   369篇
  2017年   363篇
  2016年   367篇
  2015年   242篇
  2014年   321篇
  2013年   2354篇
  2012年   295篇
  2011年   321篇
  2010年   284篇
  2009年   222篇
  2008年   274篇
  2007年   240篇
  2006年   234篇
  2005年   209篇
  2004年   228篇
  2003年   206篇
  2002年   178篇
  2001年   449篇
  2000年   293篇
  1999年   253篇
  1998年   117篇
  1997年   158篇
  1996年   133篇
  1995年   124篇
  1994年   146篇
  1993年   111篇
  1992年   183篇
  1991年   193篇
  1990年   194篇
  1989年   201篇
  1988年   168篇
  1987年   158篇
  1986年   168篇
  1985年   206篇
  1984年   160篇
  1983年   150篇
  1982年   129篇
  1981年   121篇
  1980年   116篇
  1979年   163篇
  1978年   132篇
  1977年   118篇
  1976年   94篇
  1975年   112篇
  1974年   100篇
  1973年   108篇
  1971年   99篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
As counselor preparation programs are compelled to demonstrate student social and cultural competence, valid inventories are needed to measure development consistent with contemporary standards. The Intersectional Privilege Screening Inventory was created for this purpose, was assessed using 4 types of validity evidence, and has results supporting its use in student development.  相似文献   
102.
103.
104.
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   

105.
106.
107.
108.
Abstract

An empirical examination of accredited American higher education institutions was conducted to obtain baseline data regarding distance education copyright, intellectual property, and antitrust concerns. Additionally, a multiple‐case study involving ten of the top thirty accredited distance education institutions in America was conducted. Policy approaches were examined for all institutions, and differences were discussed between public and private institutions as well as between the following Carnegie Classification institutions: Research I and II, Doctorate I and II, and Master's I and II. Data indicated that, out of the schools surveyed, 22% of the institutions in these Carnegie Classification categories published copyright and intellectual property policies on their institution's Web site. In the case study, it was found that 90% of the institutions centrally controlled their distance education program administration as well as the copyright and intellectual property policies related to it.  相似文献   
109.
110.
How the FCC actually handles “Fairness Doctrine”; complaints was the topic of Bradley Canon's 1967 Ph.D. dissertation, completed in the University of Wisconsin. Dr. Canon currently is assistant professor of political science at the University of Kentucky.  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