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   33607篇
  免费   1473篇
  国内免费   25篇
  35105篇
  2020年   442篇
  2019年   509篇
  2018年   750篇
  2017年   726篇
  2016年   777篇
  2015年   498篇
  2014年   619篇
  2013年   2757篇
  2012年   1196篇
  2011年   1191篇
  2010年   709篇
  2009年   719篇
  2008年   1006篇
  2007年   965篇
  2006年   862篇
  2005年   716篇
  2004年   696篇
  2003年   650篇
  2002年   651篇
  2001年   1071篇
  2000年   1077篇
  1999年   786篇
  1998年   334篇
  1997年   308篇
  1995年   316篇
  1992年   628篇
  1991年   600篇
  1990年   572篇
  1989年   550篇
  1988年   544篇
  1987年   484篇
  1986年   487篇
  1985年   539篇
  1984年   437篇
  1983年   400篇
  1982年   311篇
  1979年   476篇
  1978年   328篇
  1977年   302篇
  1976年   318篇
  1975年   362篇
  1974年   433篇
  1973年   463篇
  1972年   403篇
  1971年   347篇
  1970年   319篇
  1969年   337篇
  1968年   423篇
  1967年   374篇
  1966年   364篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
231.
232.
233.
234.
This exploratory study sought to determine whether selected religion-related factors differentiated between 86 patients with obsessive compulsive disorder (OCD), 73 patients with panic disorder, and 292 patients with other psychiatric (non-anxiety) disorders. A standard history questionnaire was used to obtain information from patients concerning religion of origin, involvement in religious activities, religious conflict, and perceived religiousness of parents. It was found that the percentage of patients who reported experiencing religious conflict was significantly higher for the OCD group than for the other two groups. Other findings suggested associations between Catholicism and OCD and between Protestantism and panic disorder, but further research is needed to clarify these relationships. This article is based on a paper presented at the 98th annual convention of the American Psychological Association, Boston, August 1990.  相似文献   
235.
236.
237.
A study that involved parents as reading tutors was carried out at home during the summer with four elementary children, three with learning disabilities. One purpose was to determine the effects of tutoring in the basal reader on reading rates at home. Another purpose was to determine potential generalization effects as a result of parent tutoring on different academic tasks at home and, later at school, on different and similar tasks. A combination multiple-baseline and reversal design tested for replication and generalization effects. Increases in correct rates were noted for the targeted variables across conditions. The results indicated that parents tutoring with school basal texts during the summer produced marked increases in reading rates that generalized at home to different academic tasks and at school to different and similar tasks. This suggests that parents, when using specific tutoring procedures, can increase their children's academic skills.  相似文献   
238.
239.
Much of what we learn from an experiment depends on what we ask of the subjects and how we ask it. Most music perception and cognition research is implemented using a single methodology. Recently, questions have been raised about the validity and generalizability of such a limited approach, particularly regarding such complicated theoretical constructs as musical tonality. We propose that a useful technique is to converge on the answer to experimental questions by applying multiple methods, in essence, simultaneously investigating the central research question as well as ancillary questions of method. Such an approach is facilitated by a computer hardware and software system that integrates experimental design, data collection, data analysis, and data dissemination, linking off-the-shelf components through standard file formats and data-exchange protocols. The list-based system, using an IBM-type PC running Windows 3.0, handles real-time natural sound sampling and playback, signal synthesis and analysis, MIDI input and output, digitized picture display, and various subject-response mechanisms. On the basis of graphical icons, the integrated system can be used to build custom experimental designs. Examples of convergent psychomusical experiments that were designed, implemented, and analyzed using the system are discussed.  相似文献   
240.
C. Barry Jay 《Studia Logica》1989,48(3):389-393
The internal language of a monoidal category yields simple proofs of results about a natural numbers object therein.  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