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   23013篇
  免费   401篇
  国内免费   184篇
教育   15886篇
科学研究   2345篇
各国文化   195篇
体育   1672篇
综合类   505篇
文化理论   86篇
信息传播   2909篇
  2022年   172篇
  2021年   392篇
  2020年   365篇
  2019年   432篇
  2018年   585篇
  2017年   620篇
  2016年   593篇
  2015年   535篇
  2014年   831篇
  2013年   3740篇
  2012年   929篇
  2011年   1021篇
  2010年   875篇
  2009年   819篇
  2008年   797篇
  2007年   871篇
  2006年   912篇
  2005年   776篇
  2004年   464篇
  2003年   435篇
  2002年   422篇
  2001年   524篇
  2000年   397篇
  1999年   331篇
  1998年   197篇
  1997年   189篇
  1996年   201篇
  1995年   161篇
  1994年   173篇
  1993年   146篇
  1992年   219篇
  1991年   213篇
  1990年   235篇
  1989年   218篇
  1988年   173篇
  1987年   183篇
  1986年   188篇
  1985年   175篇
  1984年   180篇
  1983年   168篇
  1982年   134篇
  1981年   136篇
  1980年   133篇
  1979年   191篇
  1978年   160篇
  1977年   112篇
  1976年   119篇
  1975年   111篇
  1973年   104篇
  1971年   116篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
乡村教师荣誉体系建设是新时期推进乡村教师队伍建设的重要环节.基于政策工具理论,通过检视和剖析各省相关政策文本发现:省级政府政策工具的选择与运用上趋向多元化与综合化,但存在着权威型工具靶向偏移,激励型工具激励性有限,能力建设型工具实效性不强,系统变革型工具欠乏顶层设计,劝诫型工具影响力不足等问题.展望未来,应在系统分析各项政策工具优势与不足的基础上,统筹发挥各类政策工具效能,充分发挥政策工具的长效价值,以促进乡村教师荣誉体系建设的可持续发展.  相似文献   
152.
153.
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   
154.
This paper demonstrates the application of module arithmetic for controlling the level of information security by a new technique referred as integer splitting. The basic definitions and concepts of the method are provided. The mathematical function of arising transformation is described in detail; its properties were studied and the basic theorems were proven that justify the use of splitting in practical applications. An active system was designed and characteristic cases of its operation are considered.  相似文献   
155.
菲尼斯在其自然法理论建构中,继承托马斯·阿奎那的自然法理论传统,以秩序与和谐为己任,秉持折衷主义态度,通过系统阐述"七大基本价值"和"九大基本方法论要求"构建了其"7+9"的道德框架,对当今的政治文明建设颇有启发意义。  相似文献   
156.
At the University of Maine, middle and high school teachers observed more than 250 university science, technology, engineering, and mathematics classes and collected information on the nature of instruction, including how clickers were being used. Comparisons of classes taught with (n = 80) and without (n = 184) clickers show that, while instructional behaviors differ, the use of clickers alone does not significantly impact the time instructors spend lecturing. One possible explanation stems from the observation of three distinct modes of clicker use: peer discussion, in which students had the opportunity to talk with one another during clicker questions; individual thinking, in which no peer discussion was observed; and alternative collaboration, in which students had time for discussion, but it was not paired with clicker questions. Investigation of these modes revealed differences in the range of behaviors, the amount of time instructors lecture, and how challenging the clicker questions were to answer. Because instructors can vary their instructional style from one clicker question to the next, we also explored differences in how individual instructors incorporated peer discussion during clicker questions. These findings provide new insights into the range of clicker implementation at a campus-wide level and how such findings can be used to inform targeted professional development for faculty.  相似文献   
157.
One of the most controversial issues in special education over the last 40 years has been the extent to which students with learning disabilities (LD) should be educated in general education classrooms. Recent mandates in federal law requiring that all students with disabilities have access to the general education curriculum and make adequate yearly progress relative to this content have intensified this debate. In this article, a brief summary of research regarding the nature of instruction that produces significantly improved educational outcomes for students with LD is provided. This is followed by a review of research related to the delivery of this high‐quality instruction in inclusive, general education classrooms and in resource settings. We conclude that this research provides the foundation for reconsidering full inclusion and how services are delivered for elementary students with LD.  相似文献   
158.
159.
160.
ABSTRACT

The objective of this study was to analyse the effect of the use of social networks in smartphones or playing video games on the passing decision-making performance in professional soccer athletes. Participants were 25 male professional soccer athletes (mean ± SD: age 23.4 ± 2.8 years). The participants performed three randomised conditions divided into three groups: control (CON), smartphone (SMA), and video game (VID). Before and after each experimental condition, the Stroop Task assessed the level of induced mental fatigue. Then, the athletes performed a simulated soccer match. A CANON® camera recorded the matches for further analysis on passing decision-making performance. A group effect was identified (< .01) with impairment on passing decision-making performance for the SMA (p = .01, ES = 0.5) and VID (p = .01, ES = 0.5) conditions. We concluded that the use of social networks on smartphones and/or playing video games right before official soccer matches might impair the passing decision-making performance in professional soccer athletes.  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