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   2552篇
  免费   45篇
  国内免费   2篇
教育   2047篇
科学研究   82篇
各国文化   40篇
体育   163篇
综合类   2篇
文化理论   18篇
信息传播   247篇
  2022年   25篇
  2021年   29篇
  2020年   47篇
  2019年   72篇
  2018年   135篇
  2017年   143篇
  2016年   112篇
  2015年   72篇
  2014年   78篇
  2013年   559篇
  2012年   77篇
  2011年   89篇
  2010年   59篇
  2009年   72篇
  2008年   69篇
  2007年   44篇
  2006年   62篇
  2005年   41篇
  2004年   48篇
  2003年   33篇
  2002年   38篇
  2001年   28篇
  2000年   40篇
  1999年   31篇
  1998年   33篇
  1997年   27篇
  1996年   30篇
  1995年   23篇
  1994年   20篇
  1993年   25篇
  1992年   31篇
  1991年   30篇
  1990年   23篇
  1989年   30篇
  1988年   19篇
  1987年   31篇
  1986年   20篇
  1985年   11篇
  1984年   10篇
  1983年   12篇
  1982年   17篇
  1981年   10篇
  1980年   16篇
  1979年   19篇
  1978年   15篇
  1977年   18篇
  1976年   12篇
  1975年   11篇
  1973年   12篇
  1971年   10篇
排序方式: 共有2599条查询结果,搜索用时 15 毫秒
91.
It is often desirable to represent carrier distribution systems by networks so that analysis can be made to predict the behavior of these systems. Modeling of two canonical carrier distribution systems, the star-shaped system and the parallel-wire system by networks was carried out in this paper. The representation is given in terms of lumped parameters when the lengths of the carrier lines are short and it is given in terms of lumped and distributed parameters when the lengths of the carrier lines are long.  相似文献   
92.
93.
94.
95.
96.
This study represents the first phase of an ongoing research program aimed at identifying the dimensions of reading attitude and determining how these dimensions relate to a broader range of variables such as reading achievement, scholastic aptitude, classroom behavior, and cognitive styles. The 150 items which comprise the experimental edition of A Survey of Reading Altitudes (Wallbrown, Brown, & Engin, 1974) were factor analyzed along with measures of scholastic aptitude, reading vocabulary, and reading comprehension. The analysis was based on the responses of 853 intermediate grade students. The attitude items were presented orally to control for reading problems, but the students also had booklets so they could read the items to themselves. Seven independent dimensions of reading attitude and one reading achievement factor were identified, interpreted, and discussed. The findings are encouraging, since they suggest that investigating the expressed reading attitudes of intermediate grade children constitutes a promising line of educational research.  相似文献   
97.
Students in an experimental and a control high school were compared in the fall and spring on their Locus of Control scores. An Open Campus policy was instituted in the experimental school, which essentially gave its upperclassmen the same freedom and responsibilities as those of a community college student. The experimentals increased significantly more than controls in internal control. Students reported that the Open Campus experience led to: after school jobs, greater time to pursue own interests, feelings of freedom, autonomy, and responsibility, a decline in grades due to “goofing off,” and less time for social activities.  相似文献   
98.
The relationships between three measures of locus of control and eight dimensions of reading attitude were investigated for a sample of 431 inner-city children. The sample included the intermediate grade children enrolled in the 20 regular classrooms of the three elementary schools from the Columbus, Ohio, Public Schools. Correlation coefficients were computed between locus of control scores and the eight dimensions of reading attitude. Reading Anxiety showed a significant relationship with the I- score. This finding suggests that inner-city children who are willing to accept personal responsibility for negative events in their lives also tend to experience more anxiety about their reading. The other seven dimensions of reading attitude were not significantly related to internality scores.  相似文献   
99.
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