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   310篇
  免费   5篇
  国内免费   3篇
教育   281篇
科学研究   6篇
各国文化   1篇
体育   1篇
信息传播   29篇
  2022年   3篇
  2021年   4篇
  2020年   5篇
  2019年   12篇
  2018年   7篇
  2017年   6篇
  2016年   20篇
  2015年   11篇
  2014年   12篇
  2013年   65篇
  2012年   7篇
  2011年   6篇
  2010年   6篇
  2009年   4篇
  2008年   14篇
  2007年   10篇
  2006年   8篇
  2005年   8篇
  2004年   8篇
  2003年   4篇
  2002年   6篇
  2001年   3篇
  2000年   2篇
  1999年   4篇
  1998年   4篇
  1996年   7篇
  1995年   3篇
  1994年   6篇
  1993年   4篇
  1992年   3篇
  1991年   2篇
  1990年   5篇
  1989年   4篇
  1988年   5篇
  1987年   5篇
  1986年   2篇
  1985年   2篇
  1983年   3篇
  1982年   3篇
  1981年   3篇
  1980年   1篇
  1979年   3篇
  1978年   3篇
  1977年   3篇
  1976年   2篇
  1975年   3篇
  1974年   1篇
  1973年   2篇
  1966年   1篇
  1904年   1篇
排序方式: 共有318条查询结果,搜索用时 8 毫秒
1.
2.
Students who make the daily commute to urban campuses face academic and nonacademic issues not typically experienced by their suburban or rural counterparts. A veteran of multiple types of campus environments offers insight into the lives of these students and suggests strategies for helping college urbanites thrive.  相似文献   
3.
Meaningful group times have been a hallmark of quality early childhood programs for many years. Stimulating group experiences present a wealth of opportunities for everyone involved. Adults are better able to monitor children's skills and enjoy their ongoing growth. Group activities also may set the stage for an abundance of adventures as young children grow and learn in all areas of their development (Bredekamp, 1986).Pauline Davey Zeece and Marcia Corr are at the Department of Human Development and the Family, University of Nebraska-Lincoln in Lincoln, Nebraska.  相似文献   
4.
Evidence of the internal consistency of standard-setting judgments is a critical part of the validity argument for tests used to make classification decisions. The bookmark standard-setting procedure is a popular approach to establishing performance standards, but there is relatively little research that reflects on the internal consistency of the resulting judgments. This article presents the results of an experiment in which content experts were randomly assigned to one of two response probability conditions: .67 and .80. If the standard-setting judgments collected with the bookmark procedure are internally consistent, both conditions should produce highly similar cut scores. The results showed substantially different cut scores for the two conditions; this calls into question whether content experts can produce the type of internally consistent judgments that are required using the bookmark procedure.  相似文献   
5.
知识组织系统(Knowledge Organization Systems/Services,简称KOS),是对各种对人类知识结构进行表达和有组织的阐述的语义工具(Semantic tools)的统称,包括分类法、叙词表、语义网络,以及更泛指的情报检索语言、标引语言。过去几十年中,许多编制这些工具的方法应运而生,对知识组织系统类型和功能的探索也发展到一定阶段,特别是在联机时代,用于标引和检索的知识组织系统的发  相似文献   
6.
Institutional and student level data from the Florida Community Colleges were examined to explore the Retention Index of the Community College Survey of Student Engagement (CCSSE). A simple correlation and regression analysis was conducted to determine if the CCSSE Retention Index could be used to predict the institutional retention rate calculated for the state accountability measure. Student level data were used with a nested ANOVA to examine if there were mean differences in the CCSSE Retention Index scores of males and females of different racial groups when accounting for the potential influence of the institution attended. Mean differences were examined since differences in retention rates of these groups have been documented.  相似文献   
7.
Abstract

The advent of the Internet alleviates the access bottleneck to TV distribution channels and softens licensing requirements. This lowers entry barriers to TV markets via the Internet in various forms. This paper takes the German TV sector as an example to analyse the attractiveness of TV markets for new entrants. A sequential framework for entering TV markets is introduced. The skills set of an Internet‐based TV provider for such an entry is examined. Technical feasibility, legal aspects, and potential sources of revenue are considered.

Potential above average profits due to the market's oligopolistic structure, as well as an increased contestability thanks to lower market entry barriers seem to render the German TV market attractive for new entrants. In early 2002, Internet‐based TV still faced severe technical and legal constraints. The analysis suggests that once these constraints have been overcome, the Internet could be an attractive additional distribution channel for some types of television content. While existing revenue sources from the TV sector are expected to be transferable to a certain degree, the value of innovative revenue sources based on online sales cannot yet be determined. This value will depend on the future acceptance of interactivity by the viewer (e. g. Owen 1999).  相似文献   
8.
9.
10.
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