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   6977篇
  免费   118篇
  国内免费   6篇
教育   5145篇
科学研究   410篇
各国文化   113篇
体育   576篇
综合类   5篇
文化理论   114篇
信息传播   738篇
  2023年   22篇
  2022年   35篇
  2021年   84篇
  2020年   190篇
  2019年   232篇
  2018年   275篇
  2017年   305篇
  2016年   298篇
  2015年   183篇
  2014年   221篇
  2013年   1501篇
  2012年   201篇
  2011年   221篇
  2010年   170篇
  2009年   170篇
  2008年   205篇
  2007年   200篇
  2006年   164篇
  2005年   170篇
  2004年   144篇
  2003年   147篇
  2002年   141篇
  2001年   119篇
  2000年   116篇
  1999年   73篇
  1998年   76篇
  1997年   92篇
  1996年   94篇
  1995年   65篇
  1994年   79篇
  1993年   65篇
  1992年   80篇
  1991年   63篇
  1990年   64篇
  1989年   58篇
  1988年   62篇
  1987年   45篇
  1986年   59篇
  1985年   64篇
  1984年   60篇
  1983年   62篇
  1982年   49篇
  1981年   42篇
  1980年   43篇
  1979年   45篇
  1978年   49篇
  1977年   29篇
  1976年   28篇
  1975年   18篇
  1948年   18篇
排序方式: 共有7101条查询结果,搜索用时 15 毫秒
91.
Early developmental psychologists viewed iconic representation as cognitively less complex than other forms of symbolic thought. It is therefore surprising that iconic signs are not acquired more easily than arbitrary signs by young language learners. One explanation is that children younger than 3 years have difficulty interpreting iconicity. The current study assessed hearing children's ability to interpret the meaning of iconic signs. Sixty-six 2.5- to 5-year-olds who had no previous exposure to signs were required to match iconic signs to pictures of referents. Whereas few of the 2.5-year-olds recognized the meaning of the iconic signs consistently, more than half of the 3.0-year-olds and most of 3.5-year-olds performed above chance. Thus, the ability to recognize the meaning of iconic signs gradually develops during the preschool years. Implications of these findings for sign language development, receptive signed vocabulary tests, and the development of the ability to interpret iconic symbols are discussed.  相似文献   
92.
Student drug use has been investigated in many countries and a standard method of conducting such surveys is described here. Using an adapted World Health Organization questionnaire patterns of drug use were investigated among the population of secondary school students in Bermuda (N=3,930). The prevalence of use of alcohol and eight illicit drugs is described and related to students’ attitudes, life-styles and demographic characteristics. Factors such as age, sex, race, parental use of alcohol, leisure time activities, allowances and beliefs about drugs all emerge (as they have in other studies) as strongly related to drug use. It is concluded that though these cross cultural similarities exist, there are important sub-cultural differences in drug use patterns which reflect social dynamics and characteristics within communities. It is suggested that a focus on sub-cultural differences may be particularly valuable in future research.  相似文献   
93.
94.
95.
The current study examines the association between parental support and adolescent sleep under varying levels of family stress. Participants included 316 adolescents (Mage = 16.40 years, 43% male) and their parents (Mage = 45.67 years, 91% mothers) from diverse ethnic backgrounds. Both adolescents and parents completed questionnaires and adolescents wore wrist actigraphs and completed self‐reports on their sleep for 7 consecutive days. Results indicated that under contexts of family stress, more parental support was linked to longer sleep duration, less sleep variability, and less time spent awake during the night. Findings suggest that under contexts of family stress, cohesive family relationships may provide a sense of stability and security that is necessary for healthful sleep.  相似文献   
96.

The present article gives an outline of the state of art in computer assisted intervention by learning-concomitant differential feedback. Based on the spectrum of possible meanings and interpretations given to the concepts ‘interaction’ and ‘interactive’ this concept is elaborated and illustrated by prototypical theoretical approaches. Based on our own empirical findings arguments are given showing that sophisticated audiovisual interactive new technologies can properly be used even on the small machines available in schools if the content materials and the flow of control given to the learner are carefully designed and based on principles of cognitive science.

  相似文献   
97.
There is an ongoing debate in the student evaluation of teaching literature about whether an overall rating or factorial dimensions of teaching effectiveness should be used in personnel decisions. Marsh and his colleagues have advocated the use of a weighted average approach to computing overall evaluations. A policy-capturing experiment was carried out where students in three different instructional contexts made overall evaluations of hypothetical instructors based on a manipulation of the teaching factors in Marsh's SEEQ. The results indicated (1) amount learned was consistently the most important factor affecting overall evaluations; (2) course difficulty was consistently the least important factor affecting overall evaluations; and (3) there was a strong similarity among the three groups in the relative importance of the various teaching factors in arriving at an overall evaluation. The implications of this research are discussed, as well as directions for future research.  相似文献   
98.
This study examines regret for withholding relational complaints. The study sample of 393 participants completed measures of irritant frequency, irritant importance, relational intimacy, emotional distress from withholding, and regret for withholding. Irritant frequency mediated the positive relationship between length of withholding and irritant importance. This process predicted less intimacy and more emotional distress from withholding, the latter of which related to regret. Alternative paths were also found between length of withholding and regret. Results offer important implications for the role of regret management in hurtful confrontations and may inform other avoidance forms.  相似文献   
99.
100.
This paper concludes that it is time for institutional research to address the issue of standards for the conduct of surveys. In reaching that conclusion, it argues that executing surveys is one of the most common activities of institutional research (IR) and one of the least served in IR literature; that as a craft, survey research is an orphan without a home in an academic discipline and therefore without a clear articulation of standards in its own right; and that as practiced in IR, survey research faces special technical problems and challenges not embraced in much of the general-survey research literature. Finally, it asks, but does not answer, how such a lofty goal as the pursuit of standards might be attained.  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