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   14129篇
  免费   208篇
  国内免费   22篇
教育   9879篇
科学研究   1606篇
各国文化   128篇
体育   1198篇
综合类   7篇
文化理论   108篇
信息传播   1433篇
  2021年   143篇
  2020年   205篇
  2019年   275篇
  2018年   389篇
  2017年   364篇
  2016年   372篇
  2015年   246篇
  2014年   320篇
  2013年   2522篇
  2012年   305篇
  2011年   321篇
  2010年   285篇
  2009年   224篇
  2008年   279篇
  2007年   247篇
  2006年   243篇
  2005年   218篇
  2004年   234篇
  2003年   212篇
  2002年   185篇
  2001年   453篇
  2000年   301篇
  1999年   260篇
  1998年   125篇
  1997年   161篇
  1996年   141篇
  1995年   126篇
  1994年   151篇
  1993年   125篇
  1992年   190篇
  1991年   202篇
  1990年   202篇
  1989年   221篇
  1988年   176篇
  1987年   166篇
  1986年   174篇
  1985年   214篇
  1984年   165篇
  1983年   154篇
  1982年   135篇
  1981年   125篇
  1980年   122篇
  1979年   167篇
  1978年   138篇
  1977年   121篇
  1976年   99篇
  1975年   115篇
  1974年   109篇
  1973年   110篇
  1971年   102篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
End-user search software is designed to simplify online searching for the casual searcher. User-friendly features provide relatively easy online access to remote databases without the need for expert search systems. At issue is whether the simplified features of such software compromise what is potentially retrievable, and if so, whether the missing information is critical to the end user. A study was designed to address this question, particularly as applied to clinicians using a user-friendly search software package such as Grateful Med. Clinician participants compared their Grateful Med search results with a full Elhill search (as performed by an intermediary) and indicated whether references unique to either search were or were not critical to their information needs.  相似文献   
972.
973.
974.
975.
This study compared the ways that graduate and undergraduate counseling and psychology students from Portugal and the United States evaluated the feelings of Love, Anger and Guilt. Utilizing a semantic differential, a multivariate analysis of variance was employed in which the independent variables were Country and Gender and the dependent variables were the evaluative and potency scales of Love, Anger and Guilt. There was no significant main effect for gender and there was no significant interaction effect for gender by country. There was a significant main effect for country. It was found that students from the United States evaluated Anger more positively than the Portuguese students and that the Portuguese students evaluated Guilt more positively than the United States students. These findings have implications that are relevant to the counseling process.  相似文献   
976.
977.
通过对篮球攻防组合技术的分类、要求、训练中应解决的问题及训练方法与手段的研究和讨论,阐明篮球攻防组合技术在教学训练中的重要性.  相似文献   
978.
This study examined the effects of social influences in the lives of an ethnically diverse sample of fifth through eighth grade students with and without learning disabilities (LD) using survey data and academic achievement scores collected in 19 Chicago public schools from 1993–1997. Similarities and differences in student perceptions of school, family, and peer group contexts were examined. In addition, longitudinal data were analyzed using hierarchical linear modeling (HLM) to identify contextual influences on changes in student reading achievement over time. Comparisons of student responses confirm and extend existing findings in the literature concerning the perceptions of students with LD of their social environments. In particular, having a learning disability was associated with consistent, mostly negative, effects on social relations across the contexts of students’ lives, regardless of gender, race, grade, and socioeconomic status. In addition, student perceptions of their friendship groups were found to have small, but significant, effects on their growth in reading achievement over the course of middle school. While students with and without LD had somewhat different views of their social contexts, the processes working within these environments appeared to affect their reading achievement in similar ways. The results suggest that careful attention should be paid to the social contexts of students’ lives when planning academic interventions.  相似文献   
979.
思维应变能力是篮球运动员的重要心理素质,它决定着技战术的发挥.通过对篮球运动员临场思维应变能力的形式及特点、不同神经类型运动员临场思维应变能力的差异的分析,提出培养篮球运动员临场思维能力的方法.  相似文献   
980.
The SKI*HI Institute developed a system of coactive signing to help alleviate communication and instructional barriers for children who are dual-sensory impaired (deaf and blind). The system also can be used to help children who are severely multihandicapped learn how to communicate. The system includes optimized coactive signs that are functional, easy to feel, easy to relate to the referent, and easy to make, and it also includes techniques related to effective coactive sign use. The coactive sign system is illustrated on a series of video tapes that has been field tested and produced and is being disseminated throughout the United States and Canada.  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