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   1286篇
  免费   34篇
  国内免费   1篇
  2020年   13篇
  2018年   18篇
  2017年   14篇
  2016年   20篇
  2015年   12篇
  2014年   21篇
  2013年   182篇
  2012年   28篇
  2011年   31篇
  2010年   23篇
  2009年   32篇
  2008年   43篇
  2007年   51篇
  2006年   41篇
  2005年   45篇
  2004年   45篇
  2003年   39篇
  2002年   36篇
  2001年   25篇
  2000年   21篇
  1999年   20篇
  1998年   23篇
  1997年   21篇
  1996年   18篇
  1995年   17篇
  1994年   15篇
  1993年   14篇
  1992年   28篇
  1991年   21篇
  1990年   12篇
  1988年   10篇
  1987年   18篇
  1986年   10篇
  1985年   10篇
  1984年   14篇
  1983年   16篇
  1982年   24篇
  1981年   25篇
  1980年   13篇
  1979年   18篇
  1978年   14篇
  1977年   13篇
  1976年   11篇
  1975年   15篇
  1974年   19篇
  1973年   20篇
  1972年   13篇
  1971年   14篇
  1970年   13篇
  1969年   13篇
排序方式: 共有1321条查询结果,搜索用时 78 毫秒
921.
922.
This study examined changes in parent functioning resulting from parental participation in a behavioral parent training (PT) program specifically designed for school-aged children with attention-deficit hyperactivity disorder (ADHD). Relative to wait list controls, subjects who completed the nine-session PT program showed significant posttreatment gains in both child and parent functioning, which were maintained 2 months after treatment. In particular, there were PT-induced reductions in parenting stress and increases in parenting self-esteem, which accompanied parent-reported improvements in the overall severity of their child's ADHD symptoms. In addition to their statistical importance, these findings are discussed in terms of their clinical significance, utilizing methods developed by Jacobson and Truax (1991).This project was supported in part through BRSG grant S07RR05712-19 awarded to Arthur D. Anastopoulos by the Biomedical Research Support Program, Division of Research Resources, National Institutes of Health.  相似文献   
923.
A survey measuring attitudes toward fear of AIDS and homophobia, taken in the fall of 1985, was repeated in the fall of 1989 on the same university population. The results indicated that whereas fear of AIDS decreased, the degree of homophobia remained essentially unchanged. In addition, although respondents were much more knowledgeable about AIDS in 1989 than in 1985, there was no evidence of any change in the relatively high correlation between the fear of AIDS and homophobia.  相似文献   
924.
FROM DNA TO DEAN     
Arthur Peacocke 《Zygon》1991,26(4):477-493
Abstract. In this broadly intellectual autobiographical essay, Arthur Peacocke describes how his educational background at Oxford led him eventually to physicochemical studies on DNA and other biological macromolecules and how biological complexity and the general problems it evokes have remained a recurring theme in his thought. He also describes how, although coming from a relatively non ecclesiastical background, this interest has nevertheless been intertwined with the larger questions to which the Christian faith seeks to respond. He outlines how he has been able to reconcile these two strands in his existence-even to becoming a priest-scientist and eventually the Dean of chapel of a Cambridge college. He reflects on the trends in the relation of religion and science over the last four decades and points to some hopeful developments in the relation between the two communities-and to some unanswered questions.  相似文献   
925.
926.
927.
928.
Current views of the relationship between audition and cerebral function suggest that increases in regional cerebral blood flow (rCBF) would occur in the superior, mid, and posterior portions of the temporal lobes, and that these changes would be more lateralized to the left hemisphere for a verbal than a nonverbal auditory task. We measured rCBF using the xenon inhalation technique in a group of healthy subjects during three conditions: (1) resting baseline, (2) auditory verbal activation (listening for word meaning), and (3) auditory nonverbal activation (listening for reduction of intensity in a series of noise bursts). Both verbal and nonverbal conditions produced highly significant increases in rCBF over the left posterior Sylvian region with a trend for verbal activation to evoke a wider area of flow increase than the nonverbal task.  相似文献   
929.
930.
Recent work by Summerfield (1975) and others indicates that a listener’s phonemic judgments may vary with the utterance rate of prior context. In particular, if a phonemic distinction is signaled by a temporal cue such as voice onset time (VOT), faster utterance rates tend to shift the phoneme boundary toward smaller values of that cue. The listener thus appears to “normalize” temporal cues according to utterance rate. In the present experiment, subjects identified syllables varying in VOT ([ga]-[kha]) following either a slow or a fast version of the phrase “Teddy hears_ _ _ _ .” Typical normalization effects were observed when the precursor phrase and target syllable had formant frequencies corresponding to an adult male vocal tract. However, a reversal of the typical pattern (i.e., a shift in the perceived voicing boundary towardlarger values of VOT with an increased utterance rate) occurred when the precursor and target had formant frequencies corresponding to an adult female vocal tract. Both normalization and “reverse” normalization effects were reduced or eliminated under several conditions of source change between precursor and target. These conditions included a change in fundamental frequency, a change in implied vocal-tract size (as reflected in an upward or downward scaling of formant frequencies), or both.  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