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   17130篇
  免费   257篇
  国内免费   54篇
教育   12676篇
科学研究   1169篇
各国文化   173篇
体育   1281篇
综合类   44篇
文化理论   93篇
信息传播   2005篇
  2022年   97篇
  2021年   197篇
  2020年   259篇
  2019年   398篇
  2018年   580篇
  2017年   598篇
  2016年   550篇
  2015年   351篇
  2014年   507篇
  2013年   3519篇
  2012年   457篇
  2011年   468篇
  2010年   438篇
  2009年   415篇
  2008年   431篇
  2007年   400篇
  2006年   426篇
  2005年   366篇
  2004年   264篇
  2003年   252篇
  2002年   225篇
  2001年   376篇
  2000年   301篇
  1999年   258篇
  1998年   160篇
  1997年   156篇
  1996年   170篇
  1995年   145篇
  1994年   154篇
  1993年   138篇
  1992年   214篇
  1991年   211篇
  1990年   235篇
  1989年   210篇
  1988年   162篇
  1987年   171篇
  1986年   172篇
  1985年   165篇
  1984年   161篇
  1983年   147篇
  1982年   114篇
  1981年   125篇
  1980年   117篇
  1979年   172篇
  1978年   143篇
  1977年   99篇
  1976年   109篇
  1975年   102篇
  1973年   99篇
  1971年   102篇
排序方式: 共有10000条查询结果,搜索用时 140 毫秒
91.
92.
93.
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   
94.
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   
95.
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   
96.
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   
97.
Numerous studies have addressed how state authorities and public funding bodies control, regulate, steer, supervise or oversee higher education institutions. There are fewer studies on how higher education institutions respond to the actions of the mentioned authorities. States have aimed at increasing the autonomy of higher education institutions. At the same time institutions are expected to generate social benefits and economic growth. There is an endless tension between a policy that will strengthen the autonomy and simultaneously retain a space for state steering. The Finnish polytechnic and university sectors have very different origins from which their financial autonomy takes its shape. This article sheds light on how six Finnish polytechnics aspire to enhance their financial autonomy. The polytechnics operate under two separate steering systems, the state and local owners, and both of these actors exercise their own steering. This article shows that polytechnics are willing and able to enhance their financial autonomy. They calculate their advantages and habitually engage with the Ministry of Education or their owners depending on the case in question. The financial autonomy of polytechnics does not culminate in a form of diversified funding sources, but as balancing between the two masters on whose resources they are heavily dependent.  相似文献   
98.
99.
100.
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