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   637篇
  免费   43篇
  2023年   9篇
  2022年   6篇
  2021年   12篇
  2020年   12篇
  2019年   13篇
  2018年   16篇
  2017年   19篇
  2016年   20篇
  2015年   23篇
  2014年   21篇
  2013年   61篇
  2012年   24篇
  2011年   30篇
  2010年   22篇
  2009年   15篇
  2008年   28篇
  2007年   21篇
  2006年   21篇
  2005年   15篇
  2004年   14篇
  2003年   17篇
  2002年   9篇
  2001年   15篇
  2000年   10篇
  1999年   15篇
  1998年   7篇
  1997年   8篇
  1996年   10篇
  1995年   8篇
  1993年   5篇
  1991年   8篇
  1990年   6篇
  1989年   5篇
  1988年   9篇
  1987年   7篇
  1986年   7篇
  1984年   9篇
  1983年   8篇
  1982年   10篇
  1980年   6篇
  1978年   6篇
  1975年   4篇
  1973年   5篇
  1966年   4篇
  1959年   5篇
  1957年   4篇
  1956年   4篇
  1954年   4篇
  1953年   5篇
  1951年   4篇
排序方式: 共有680条查询结果,搜索用时 15 毫秒
11.
Carter  Jessica 《Topoi》2023,42(1):211-220

From the perspective of mathematical practice, I examine positions claiming that mathematical objects are introduced by human agents. I consider in particular mathematical fictionalism and a recent position on social ontology formulated by Cole (2013, 2015). These positions are able to solve some of the challenges that non-realist positions face. I argue, however, that mathematical entities have features other than fictional characters and social institutions. I emphasise that the way mathematical objects are introduced is different and point to the multifaceted role that relations and interconnections play in this context. Finally, I argue that mathematical entities can be considered to be pragmatically real.

  相似文献   
12.
13.
14.
15.
The Child Behavior Checklist's (CBCL) applicability to a sample of 105 Russian 9- and 10-year-old children was evaluated by examining the internal consistency of Russian adaptations of parent and teacher report forms. In addition, child behavior scores were correlated with child reports of internalizing symptoms and maternal reports of their own internalizing symptoms and general family functioning. Finally, rates of child behavior problems and patterns of interrater agreement were compared with U.S. normative data. The psychometric properties of the adaptations demonstrate the adequacy of these instruments for use in Russia. Internal consistency and interrater agreement were generally comparable to estimates obtained in U.S. normative samples. Further, an exploration of the construct validity of the Russian versions of the CBCL and Teacher Report Form (TRF) lends additional support to the adequacy of these instruments.This work was supported in part by grants from the International Research Exchanges Board (IREX) (with funds provided by the Andrew Mellon Foundation, the National Endowment for the Humanities, and the U.S. Department of State) and the National Institute of Mental Health (MH-00508, an RSDA to D. Pauls). None of these organizations is responsible for the views expressed. In addition, the authors wish to thank Thomas Achenbach for his helpful comments and suggestions.  相似文献   
16.
Although there have been several studies that have explored people's expectations about counseling, to date there has been no such exploration from a racial-cultural perspective. This study sought to explore the relationship between White racial identity attitudes and expectations about counseling. Although the results showed that men and women differ in their expectations about counseling and in their levels of White racial identity attitudes, the findings of the study indicated that there was no significant relationship between White racial identity attitudes and counseling expectations. The results of the study are examined in relation to previous findings in the field and directions for future study are considered.  相似文献   
17.
A new method for the analysis of complex avian song repertoires is introduced. The method consists of sending a tape-recorded bird-song signal through five narrow band-pass filters and then to a five-channel high-speed pen recorder. A coding method that allows a researcher to convert the output from the pen recorder to numbers for later analysis by computer is described.  相似文献   
18.
19.
Reducing the effects of adjacent distractors by narrowing attention.   总被引:1,自引:0,他引:1  
Three experiments explored the gradual narrowing of visual attention to a letter target when other letters were positioned close by. The method by which attention was narrowed involved presenting a digit target immediately prior to the latter target and in the same location for progressively shorter durations and requiring the subject to identify both the digit target and the letter target before responding. The response time data from the first 2 experiments indicated that shorter durations of the digit reduced the amount of information processed from noise letters positioned on either side of the letter target. In the third experiment, in which separation of letters was increased slightly, the response times indicated that the information from flanking noise letters may have been virtually eliminated.  相似文献   
20.
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