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   14340篇
  免费   221篇
  国内免费   23篇
教育   9944篇
科学研究   1581篇
各国文化   143篇
体育   1300篇
综合类   6篇
文化理论   108篇
信息传播   1502篇
  2021年   159篇
  2020年   222篇
  2019年   323篇
  2018年   450篇
  2017年   409篇
  2016年   408篇
  2015年   268篇
  2014年   364篇
  2013年   2620篇
  2012年   341篇
  2011年   367篇
  2010年   309篇
  2009年   265篇
  2008年   313篇
  2007年   272篇
  2006年   260篇
  2005年   239篇
  2004年   262篇
  2003年   237篇
  2002年   194篇
  2001年   459篇
  2000年   304篇
  1999年   267篇
  1998年   129篇
  1997年   156篇
  1996年   142篇
  1995年   125篇
  1994年   141篇
  1993年   112篇
  1992年   183篇
  1991年   182篇
  1990年   188篇
  1989年   186篇
  1988年   163篇
  1987年   156篇
  1986年   156篇
  1985年   198篇
  1984年   157篇
  1983年   130篇
  1982年   129篇
  1981年   115篇
  1980年   111篇
  1979年   159篇
  1978年   122篇
  1977年   111篇
  1976年   80篇
  1975年   106篇
  1974年   96篇
  1973年   102篇
  1971年   85篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
101.
102.
103.
English-Spanish cognates are an important subset of words in both the English and Spanish languages. Cognates are words that possess identical or nearly identical spellings and meanings in both languages as a result of being derived from Latin and Greek. Of major importance is the fact that many of the more than 20,000 cognates in English are academic vocabulary words, terms essential for comprehending school texts.

?The Pura Belpré Children's Book Award has been given since 1996 to outstanding children's and young adult literature that represents, affirms, and celebrates the Latino cultural experience. The books are judged for their literary and artistic quality.

?There are many English-Spanish cognates in each of the Pura Belpré picture books. The purpose of this article is to introduce the Pura Belpré Cognate Database, which lists all of the English-Spanish cognates for each of the children's picture books that have won the award or have been designated as honor books. Ideas for vocabulary, spelling, and morphology lessons or mini-lessons are also presented.  相似文献   
104.
With the rise of microfluidics for the past decade, there has come an ever more pressing need for a low-cost and rapid prototyping technology, especially for research and education purposes. In this article, we report a rapid prototyping process of chromed masks for various microfluidic applications. The process takes place out of a clean room, uses a commercially available video-projector, and can be completed in less than half an hour. We quantify the ranges of fields of view and of resolutions accessible through this video-projection system and report the fabrication of critical microfluidic components (junctions, straight channels, and curved channels). To exemplify the process, three common devices are produced using this method: a droplet generation device, a gradient generation device, and a neuro-engineering oriented device. The neuro-engineering oriented device is a compartmentalized microfluidic chip, and therefore, required the production and the precise alignment of two different masks.  相似文献   
105.
This article focuses on Chua Beng Huat’s work on the East Asian pop culture that became more prominent in East and Southeast Asia from the 1990s, when the circulation of multilingual and multi-format pop culture started to exceed linguistic, ethnic and national boundaries. It argues that Chua’s work indicates that the pop-cultural production and innovation that support the globalisation and regionalisation processes in East Asia need not be national in origin but can hail from different national origins – and this despite the existing political realities of the region and its history of political fractures. Chua Beng Huat cautions, though, that the national popular can also be marshalled to defeat the border-crossing potential of an inter-Asian pop culture. What is the “Asia” imagined or being represented in such cultural production? Chua’s work is also distinctive in that it deals with the political and economic conditions that underpin mainstream pop consumption as a socio-cultural phenomenon, instead of examining consumption as identity politics. The article concludes by noting the significance that Chua as an institutional builder has played in enabling the study of East Asian pop culture in the region.  相似文献   
106.
Serious games are becoming increasingly popular due to their association with increased learning outcomes when compared to traditional self-regulated learning activities. However, the majority of research examining the outcomes of serious games has focused almost exclusively on learning outcomes. This has resulted in a lack of research examining why these types of games result in increased positive outcomes, such as engagement or performance. This study seeks to address this gap in existing research by examining the relationship between game difficulty and participants’ engagement, performance and self-efficacy in a Pacman style maze navigation game. This required the use of hidden difficulty variations which participants were randomly assigned. Participants engaged with the game over a 5-days practice period. Results from this study suggest that difficulty plays a considerable role in influencing participants’ self-efficacy for the task. Self-efficacy has been consistently linked to positive outcomes such as increased engagement and performance. This highlights the importance of difficulty as a game design factor as well as providing an insight into the manner in which serious games could be further refined in order to increase user’s self-efficacy and associated positive outcomes. Implications for future serious games and self-efficacy research are discussed.  相似文献   
107.
108.
109.
Although science has received much attention as a political and educational initiative, students with learning disabilities (LD) perform significantly lower than their nondisabled peers. This meta‐analysis evaluates the effectiveness of instructional strategies in science for students with LD. Twelve studies were examined, summarized, and grouped according to the type of strategy implemented. Effect sizes (ES) were calculated for each study. Across all studies, a mean ES of .78 was obtained, indicating a moderate positive effect on students with LD science achievement. Findings also align with past reviews of inquiry‐based instruction for students with special needs, indicating that students with LD need structure within an inquiry science approach in order to be successful. Additionally, results suggest that mnemonic instruction is highly effective at increasing learning disabled students' acquisition and retention of science facts.  相似文献   
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