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   41340篇
  免费   647篇
  国内免费   55篇
教育   29687篇
科学研究   3918篇
各国文化   466篇
体育   3075篇
综合类   43篇
文化理论   379篇
信息传播   4474篇
  2021年   391篇
  2020年   592篇
  2019年   851篇
  2018年   1199篇
  2017年   1285篇
  2016年   1195篇
  2015年   779篇
  2014年   1033篇
  2013年   8008篇
  2012年   955篇
  2011年   1056篇
  2010年   878篇
  2009年   781篇
  2008年   919篇
  2007年   872篇
  2006年   817篇
  2005年   732篇
  2004年   724篇
  2003年   638篇
  2002年   637篇
  2001年   917篇
  2000年   750篇
  1999年   715篇
  1998年   405篇
  1997年   468篇
  1996年   467篇
  1995年   448篇
  1994年   448篇
  1993年   381篇
  1992年   548篇
  1991年   544篇
  1990年   566篇
  1989年   554篇
  1988年   513篇
  1987年   463篇
  1986年   473篇
  1985年   564篇
  1984年   492篇
  1983年   456篇
  1982年   396篇
  1981年   375篇
  1980年   321篇
  1979年   430篇
  1978年   389篇
  1977年   359篇
  1976年   300篇
  1975年   271篇
  1974年   255篇
  1973年   279篇
  1971年   234篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
53.
This article focuses on several conceptual and structural issues that are central to copyright compliance in the electronic age. It presumes the development of a national electronic network for storing, organizing, accessing, managing, and charging for information. The article first discusses the implications of constructing a comprehensive electronic “highway,” or Digital Library System (DLS), which would link information to the widespread community of users. It then presents the ramifications of a highly decentralized set of subsystems serving rights holders and users, linked by protocols established by the DLS. A discussion of the implications of digital interchangeability for copyright follows. The article ends with an analysis of alternatives to existing intellectual property rights conveyance systems, and concludes that current ownership structures, and systems for conveying rights and royalties, will remain the foundation for copyright in the electronic world. This article appeared in a slightly different form in theProceedings of the Twelfth National Online Meeting—1991, and is published here with the permission of Learned Information, Inc., Medford, N.J.  相似文献   
54.
In recent years university presses have undergone some significant changes, such as expansion of their scope to include materials that may have appeal beyond the scholarly market. This article investigates, through the use of a survey of university libraries, the acquisition of university press products by libraries. In general, recent years have been changes in the relationship between university presses and libraries that have resulted in fewer items being purchased by the libraries.  相似文献   
55.
论体育教育专业改革的职业需求适应性   总被引:1,自引:0,他引:1  
体育教育专业在培养中小学体育师资方面起着重要的作用,因而,体育教育专业的培养目标和教学模式必须适应现代社会的需求,适应中小学体育教学.21世纪中小学体育必将进行一系列的改革.分析了中小学体育的教学目标、教学方法和课程设置,同时对体育教育专业改革的若干方面进行了探讨.  相似文献   
56.
Are two national reports on standardized testing realistic or simplistic? What is the difference between “political” testing and conventional testing? What are some likely consequences of politicizing school testing?  相似文献   
57.
Three factors tied with secondary student success in content‐area reading are demonstrated: (a) validated teacher‐focused and student‐focused interventions, (b) integrated and comprehensive service delivery systems, and (c) well‐designed, data‐based professional developmental programs. Difficult challenges face secondary students with LD and their teachers with regard to these students’ participation and success in required general education classes. Recently, instructional methods and materials have been developed and validated for promoting these students’ success. Some of them focus on how general education teachers plan and teach their content‐area courses; others focus on giving students the strategies they need to respond independently to the demands of their courses. This article describes these instructional methods, a service‐delivery model for implementing these interventions in secondary schools, and professional‐development mechanisms and administrative support that must be in place for the model to be maintained effectively.  相似文献   
58.
The four articles on instructional discourse contributed by the members of the REACH project offer rich examples of the learning opportunities for students with learning disabilities (LD) in upper‐elementary and middle‐school content classrooms. In this commentary, I highlight possible reasons for variations in instructional engagement within and across the studies, discuss the challenges to engaging students with LD in discipline‐based instruction, and stress the value for the LD field of greater attention to instructional discourse.  相似文献   
59.
60.
The poor reading achievement of African-American children in urban schools is well established. African-American children from low-income homes may be at particular risk for reading difficulties, although middle-income children often fare poorly as well. Intervention efforts have focused on children in kindergarten through fifth grade. This article suggests that prevention efforts must begin prior to kindergarten entry. Several key variables that may influence young children's performance, including poverty, general oral language skills, dialectal variations, home literacy practices, standardized testing bias, and teacher expectations, are explored. Future directions for research addressing emergent literacy in African-American children are discussed throughout.  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