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   14084篇
  免费   208篇
  国内免费   22篇
教育   9888篇
科学研究   1533篇
各国文化   145篇
体育   1195篇
综合类   6篇
文化理论   108篇
信息传播   1439篇
  2021年   143篇
  2020年   203篇
  2019年   276篇
  2018年   388篇
  2017年   368篇
  2016年   370篇
  2015年   247篇
  2014年   329篇
  2013年   2512篇
  2012年   305篇
  2011年   328篇
  2010年   291篇
  2009年   230篇
  2008年   284篇
  2007年   250篇
  2006年   243篇
  2005年   218篇
  2004年   244篇
  2003年   225篇
  2002年   183篇
  2001年   460篇
  2000年   296篇
  1999年   255篇
  1998年   120篇
  1997年   159篇
  1996年   136篇
  1995年   124篇
  1994年   151篇
  1993年   117篇
  1992年   186篇
  1991年   195篇
  1990年   198篇
  1989年   210篇
  1988年   175篇
  1987年   163篇
  1986年   171篇
  1985年   215篇
  1984年   172篇
  1983年   154篇
  1982年   146篇
  1981年   133篇
  1980年   124篇
  1979年   172篇
  1978年   143篇
  1977年   123篇
  1976年   95篇
  1975年   116篇
  1974年   108篇
  1973年   115篇
  1971年   104篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
Oh and LaRose (2016) contended that problem severity and channel publicness shape support seekers’ goals, time spent composing messages, and the sophistication of those messages. The current study seeks to replicate and extend Oh and LaRose’s study to produce a more accurate understanding of the factors that influence the sophistication of support-seeking messages online. Support seekers’ goals varied according to the severity of a stressor and the publicness of a channel, and the amount of time people spent composing a message influenced its sophistication. We extend the original study by examining associations that were not initially tested. Time spent composing messages mediated the influence of problem severity on the quality of people’s messages, and this effect was moderated by channel publicness.  相似文献   
92.
ABSTRACT

Course: Mixed-Method Communication Research Methods

Objective: The purpose of this semester-long activity is to provide students with opportunities to cultivate mixed-method communication research skills through a social justice-informed service-learning format. Completing this course, students will be able to: recognize the unique strengths of quantitative and qualitative research methods; locate, evaluate, and utilize scholarly literature for a literature review; conduct an original research project using quantitative and qualitative research methods to gather and analyze data; and raise self and community awareness about a social issue through collaboration with a community organization.  相似文献   
93.
94.
95.
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   
96.
97.
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   
98.
99.
This article focuses on counseling research in the community college context. The article suggests the need for a robust community college knowledge base, describes some limitations of the current community college literature, and suggests a framework for more effective work in this area. The authors’ own experiences and selected examples of published studies are used as illustrations of the hurdles encountered and solutions available when examining counseling theories, practices, and outcomes in 2‐year settings.  相似文献   
100.
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