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   19639篇
  免费   196篇
  国内免费   29篇
教育   12883篇
科学研究   3053篇
各国文化   166篇
体育   1696篇
综合类   11篇
文化理论   162篇
信息传播   1893篇
  2021年   158篇
  2020年   249篇
  2019年   380篇
  2018年   494篇
  2017年   483篇
  2016年   403篇
  2015年   289篇
  2014年   395篇
  2013年   3532篇
  2012年   398篇
  2011年   383篇
  2010年   337篇
  2009年   306篇
  2008年   320篇
  2007年   359篇
  2006年   295篇
  2005年   277篇
  2004年   265篇
  2003年   290篇
  2002年   262篇
  2001年   308篇
  2000年   316篇
  1999年   293篇
  1998年   150篇
  1997年   160篇
  1996年   209篇
  1995年   149篇
  1994年   183篇
  1993年   174篇
  1992年   269篇
  1991年   280篇
  1990年   266篇
  1989年   283篇
  1988年   226篇
  1987年   226篇
  1986年   286篇
  1985年   273篇
  1984年   228篇
  1983年   245篇
  1982年   216篇
  1981年   189篇
  1980年   192篇
  1979年   284篇
  1978年   223篇
  1977年   204篇
  1976年   192篇
  1975年   157篇
  1974年   190篇
  1972年   148篇
  1971年   167篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
963.
Conclusion Differences in achievement under the two methods in the acquisition of information and in the ability to apply information to novel situations were in favor of the film-presentation method, and were large enough to be significant at the 2 and 5 percent levels of confidence respectively. Therefore, under the conditions of this experiment, joint pupil-teacher film production was not as effective in producing achievement in the learning outcomes measured as the film-presentation method. As regards retention of learning, the experimenter concluded that neither method was superior. It was also found that the film-production method was more costly, and that most pupils preferred it even though they did not always feel that they learned the most science by that method. How effective is the use of student film production for the teaching of content in a subject matter area? This study shows the superiority of conventional film presentation techniques over such joint pupil-teacher film production. Carlton W. H. Erickson is director of the audio-visual center and associate professor of education at the University of Connecticut. The article is based on a doctoral dissertation at the Boston University School of Education, entitled, “The Effectiveness of Joint Pupil-Teacher Motion Picture Production as a Method of Teaching General Science.”  相似文献   
964.
965.
966.
Some effects of verbal load on achievement tests   总被引:1,自引:0,他引:1  
  相似文献   
967.
This paper responds to the fourth annual report by W. John Minter and Howard R. Bowen on Independent Higher EducationFinancial and Educational Trends in Independent Higher Education, 1978. Primary thesis: established financial reporting does not tend to do justice to a sound assessment of the financial condition of colleges and universities. Because the latter belong to the service economy, we must know more than we do about changes in quality. Such studies also must say how well institutional objectives are being achieved. College presidents and deans have tended to provide researchers with overly optimistic information. When they later see that Bowen and Minter report this very fact, they complain that their conclusions are not gloomy enough. Such double standards damage realistic program assessment efforts. The blame falls on the respondents and not on the authors. Neither can the authors be blamed for shortcomings in financial accounting ignoring the total cost of institutional activity. If accounting practice were based on a total cost concept the news about higher education finance would more nearly reflect what we all know is true: colleges and universities are worse off than the statistics say.Presented at the Annual Forum of the Association for Institutional Research, Houston, Texas, May 1978.  相似文献   
968.
969.
Culture not only justifies the existence of libraries but also determines the level of funding libraries receive for development. Cultural appreciation of the importance of libraries encourages their funding; lack of such appreciation discourages it. Medical library development is driven by culture in general and the culture of physicians in particular. Nineteenth-century North American medical library funding reflected the impact of physician culture in three phases: (1) Before the dawn of anesthesia (1840s) and antisepsis (1860s), when the wisdom of elders contained in books was venerated, libraries were well supported. (2) In the last third of the nineteenth century, as modern medicine grew and as physicians emphasized the practical and the present, rather than books, support for medical libraries declined. (3) By the 1890s, this attitude had changed because physicians had come to realize that, without both old and new medical literature readily available, they could not keep up with rapidly changing current clinical practice or research. Thus, "The Medical Library Movement" heralded the turn of the century.  相似文献   
970.
Plonski GA  Saidel RG 《Minerva》2001,39(2):217-238
This essay considers gender in relation toBrazilian science and technology. It reviewsleading studies in the field, and offers briefbiographies of pioneering women in science.While there is still much room for improvement,the essay suggests that the situation of womenin science experienced significant progressduring the closing decades of the twentiethcentury.  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