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   18807篇
  免费   282篇
  国内免费   55篇
教育   14011篇
科学研究   1211篇
各国文化   251篇
体育   1282篇
综合类   44篇
文化理论   86篇
信息传播   2259篇
  2022年   120篇
  2021年   209篇
  2020年   299篇
  2019年   458篇
  2018年   612篇
  2017年   684篇
  2016年   606篇
  2015年   396篇
  2014年   555篇
  2013年   3828篇
  2012年   517篇
  2011年   532篇
  2010年   463篇
  2009年   467篇
  2008年   476篇
  2007年   444篇
  2006年   454篇
  2005年   399篇
  2004年   299篇
  2003年   290篇
  2002年   259篇
  2001年   383篇
  2000年   319篇
  1999年   275篇
  1998年   173篇
  1997年   170篇
  1996年   189篇
  1995年   162篇
  1994年   163篇
  1993年   143篇
  1992年   219篇
  1991年   219篇
  1990年   241篇
  1989年   224篇
  1988年   176篇
  1987年   186篇
  1986年   191篇
  1985年   184篇
  1984年   183篇
  1983年   172篇
  1982年   137篇
  1981年   141篇
  1980年   138篇
  1979年   192篇
  1978年   166篇
  1977年   115篇
  1976年   120篇
  1975年   117篇
  1973年   108篇
  1971年   119篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
Medicine has made increasing use of meta-analysis, largely as a quantitative procedure for combining results of clinical trials. Meta-analysis begins with a comprehensive review of the literature. The next step is a systematic analysis of the quality and content of each study. Finally, results are combined statistically and conclusions are drawn from this new overview of the data. This paper presents a brief historical perspective on the use of meta-analysis in medicine with emphasis on the medical library. The authors conclude that in the future, medical librarians will play a significant role in the application of this useful technique.  相似文献   
12.
Chaos theory, informational needs, and natural disasters   总被引:2,自引:0,他引:2  
This study applies chaos theory to a system-wide analysis of crisis communication in a natural disaster. Specifically, we analyze crisis communication during the 1997 Red River Valley flood in Minnesota and North Dakota. This flood, among the worst in modern American history, consumed entire metropolitan areas, displacing thousands of people. The conditions and decisions leading to the disaster, and the subsequent reactions are retraced. Communication related to river crest predictions (fractals), the shock at the magnitude of the crisis (cosmology episode), novel forms of reorganizing (self-organization), and agencies that aided in establishing a renewed order (strange attractors) are evaluated. Ultimately, we argue that preexisting sensemaking structures favoring rationalized, traditional views of a complex system led officials to make inappropriately unequivocal predictions and ultimately diminished the effectiveness of the region's crisis communication and planning.  相似文献   
13.
14.
What is the typical amount of student answer‐changing that takes place in a low‐stakes test environment? Can we use this information to look for evidence of improper answer‐changing (cheating) on high‐stakes test?  相似文献   
15.
The many challenges faced by health sciences libraries of all types and sizes often require innovative solutions. When an innovative solution involves calculated risk taking, the approach is called intrapreneurial. At the University of Miami School of Medicine, an intrapreneurial approach solved the fiscal problems of the biomedical communications unit. The Louis Calder Memorial Library inherited these problems when the Department of the Library and Biomedical Communications was created in the early 1980s. In this paper, two intrapreneurial programs are described, and the benefit and suitability of this management style to information services are demonstrated.  相似文献   
16.
A multiple case study of four supervisors indicated that numerous factors shape supervisors' in-session performance and revealed a complex interplay between thoughts and behaviors.  相似文献   
17.
New World Writing, a magazine founded by New American Library in 1952, quickly became an important vehicle for liberal intellectual and literary thought. In addition to providing an outlet for new writing, the magazine became an important acquisitions tool for NAL. Throughout its lifetime, New World Writing remained a showcase for many of the finest writers of the 1950s, including Christopher Isherwood, Louis Auchincloss, Tennessee Williams, Flannery O’Connor, Jack Kerouac, and Gore Vidal. He is the author of Under Cover: An Illustrated History of American Mass Market Paperbacksand Heavy Traffic and High Culture: The New American Library as Literary Gatekeeper. He is working on a study of American literary agents  相似文献   
18.
Recent implementation of Nebraska's Standards-based Teacher-led Assessment and Reporting System (STARS) introduced a unique opportunity to examine the benefits and drawbacks of a teacher-led state assessment system. STARS is unique among state assessment systems in that statewide tests are replaced by locally developed assessments designed by teachers. Benefits of this system are found to be greater teacher use of results for instructional planning, greater diagnostic utility of the assessments, and gains in assessment literacy. Disadvantages include the time-consuming and stressful nature of creating localized assessments. Compatibility of STARS with the requirements of the No Child Left Behind Act are discussed.  相似文献   
19.
20.
Between 1880 and 1950, the role of women as authors of elementary readers flowered and faded. From 1880 to 1915, female authorship dominated. Over the next fifteen years female authorship withstood the challenge of the scientific movement in education. Women’s role as solo authors declined, however, during the Depression, World War II and the postwar years. These changes are explained by the deteriorating environment for female professionalism, changes in the concept of reading expertise, the expanded role of publishers in textbook development, and the differences between men and women in opportunities for graduate study. E. Jennifer is Monaghan a professor in the Department of Educational Services, Brooklyn College of the City University of New York. She is the founder of the History of Reading Special Interest Group of the International Reading Association and author ofA Common Heritage: Noah Webster’s Blue-Back Speller.  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