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   14812篇
  免费   158篇
  国内免费   15篇
教育   9815篇
科学研究   2355篇
各国文化   148篇
体育   1134篇
综合类   6篇
文化理论   108篇
信息传播   1419篇
  2021年   132篇
  2020年   202篇
  2019年   324篇
  2018年   400篇
  2017年   398篇
  2016年   324篇
  2015年   234篇
  2014年   314篇
  2013年   2803篇
  2012年   330篇
  2011年   297篇
  2010年   260篇
  2009年   258篇
  2008年   280篇
  2007年   283篇
  2006年   237篇
  2005年   238篇
  2004年   219篇
  2003年   206篇
  2002年   202篇
  2001年   215篇
  2000年   233篇
  1999年   213篇
  1998年   124篇
  1997年   130篇
  1996年   168篇
  1995年   123篇
  1994年   145篇
  1993年   125篇
  1992年   181篇
  1991年   176篇
  1990年   187篇
  1989年   197篇
  1988年   146篇
  1987年   137篇
  1986年   184篇
  1985年   173篇
  1984年   147篇
  1983年   143篇
  1982年   134篇
  1981年   122篇
  1980年   129篇
  1979年   154篇
  1978年   139篇
  1977年   116篇
  1976年   116篇
  1975年   92篇
  1974年   127篇
  1973年   105篇
  1971年   118篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
This article is the third in a series reporting on the changes in attitudes and interests‐‐mainly with respect to physics‐of several hundred students as they proceed through the Danish upper secondary school (Gymnasium). It concentrates on the results of the final investigation which took place shortly before the students leave the school.  相似文献   
103.
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   
104.
Editorial     
  相似文献   
105.
106.
It has been suggested that the field of Mind, Brain, and Education (MBE) requires a stable infrastructure for translating research into practice. Hinton and Fischer (2008) point to the academic medical center as a model for similar translational work and suggest a similar approach for linking scientists to research schools. We propose expanding their model to include a formal role for clinicians. Including clinicians who work with children with learning problems brings an important perspective to the translational work. For example, the integration of the concept of “differential diagnosis,” a core precept in clinical medicine, would bring needed diagnostic specificity to the field of MBE. We describe a virtual infrastructure for collaboration, or “collaboratory,” consisting of research scientists, educators, and clinicians, linked to an academic institution. We anticipate that MBE graduates can play a critical role in the collaboratory model. With additional training, they can become “neuroeducators” capable of moving comfortably among the disciplines, building linkages, fostering communication, and facilitating collaboration.  相似文献   
107.
Abstract

Correspondence study represents the first and most persistent distance education format in American universities. Later called independent study, it enabled universities to disseminate instruction far beyond their campuses. Yet, national‐level leadership provided by the National University Continuing Education Association (NUEA) and its divisions has been relatively restrained. In contrast, leadership in the private correspondence school sector has been assertive, and sometimes even aggressive. The NUEA and its members shunned this approach, choosing instead to lead by persuasion and example. The NUEA developed standards of practice concerned primarily with replicating on‐campus teaching styles and values, rather than the promotion of distance education. With the abolition of its division structure, the NUEA's successor, the University Continuing Education Association (UCEA), has opted out of a leadership role in independent study. This paper concludes that the NUEA's initial attempt at leadership in distance education— while reasoned and principled—contained flaws that made failure inevitable.  相似文献   
108.
109.
110.
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