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   16831篇
  免费   244篇
  国内免费   119篇
教育   11569篇
科学研究   2164篇
各国文化   120篇
体育   1501篇
综合类   11篇
文化理论   122篇
信息传播   1707篇
  2021年   119篇
  2020年   240篇
  2019年   371篇
  2018年   492篇
  2017年   434篇
  2016年   427篇
  2015年   276篇
  2014年   359篇
  2013年   2928篇
  2012年   328篇
  2011年   367篇
  2010年   260篇
  2009年   268篇
  2008年   285篇
  2007年   309篇
  2006年   305篇
  2005年   288篇
  2004年   281篇
  2003年   273篇
  2002年   259篇
  2001年   275篇
  2000年   302篇
  1999年   292篇
  1998年   154篇
  1997年   166篇
  1996年   192篇
  1995年   175篇
  1994年   150篇
  1993年   155篇
  1992年   231篇
  1991年   233篇
  1990年   240篇
  1989年   271篇
  1988年   222篇
  1987年   235篇
  1986年   229篇
  1985年   262篇
  1984年   237篇
  1983年   221篇
  1982年   181篇
  1981年   178篇
  1980年   165篇
  1979年   258篇
  1978年   194篇
  1977年   186篇
  1976年   149篇
  1975年   134篇
  1974年   157篇
  1973年   136篇
  1971年   126篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
71.
72.
73.
74.
75.
Twelve Chinese academic journals, indexed by SCI and financed by the National Natural Science Foundation (NNSF), were analysed using the 2000–2003 Total Citations and Impact Factor data from JCR. It is concluded that the quality of Chinese journals is generally low and has remained so despite recent government measures aimed at improvement. Several factors are influential – particularly the Chinese government's policy of encouraging submission to foreign journals. Finance, management, and the academic degree policy are also obstacles. It is suggested that the Chinese government should reconsider its current policies so as to encourage higher quality in domestic periodicals and thus a greater recognition of Chinese journals by the international academic community.  相似文献   
76.
Drawing on components of agenda-setting theory and the two-step flow of information from mass media to news audiences, this study examines the effects of mass and interpersonal communication on breast cancer screening practices among college- and middle-aged women (n = 284). We theorized that screening behaviors among younger women would be influenced more by interpersonal sources of information while screening among middle-aged women would be more influenced by exposure to mass-mediated information. Findings supported anticipated patterns, revealing important and varying roles for both mass and interpersonal communication in the health behaviors of women. Implications for health practitioners and campaign planners, as well as recommendations for future research, are discussed.  相似文献   
77.
This study sought to determine if exposure to two communication-oriented activities, videotapes and public service announcements, accounts for changes in substance use among adolescents participating in the Drug Resistance Strategies Project's keepin' it REAL adolescent substance use prevention curriculum. Middle-school students (4,734, 72% Latino) responded to questionnaires related to these analyses. An analysis of covariance (ANCOVA) model was fit separately to six substance use outcomes. The results suggested that intervention students who saw four or five videos engaged in less substance use in the past month than did students who saw fewer videos. Having seen the PSAs one or more times did not predict the reported change in substance use.  相似文献   
78.
79.
The University of Colorado at Boulder Libraries used participatory management to reduce a special collections backlog. Without an increase in budget or staffing, technical and public services departments designed a pilot project to redeploy internal human resources in a collaborative manner. The process of backlog management is discussed.  相似文献   
80.
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