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   77075篇
  免费   3134篇
  国内免费   49篇
  80258篇
  2020年   857篇
  2019年   1071篇
  2018年   1521篇
  2017年   1512篇
  2016年   1616篇
  2015年   1088篇
  2014年   1345篇
  2013年   6489篇
  2012年   2440篇
  2011年   2581篇
  2010年   1535篇
  2009年   1597篇
  2008年   2307篇
  2007年   2281篇
  2006年   2034篇
  2005年   1811篇
  2004年   1794篇
  2003年   1613篇
  2002年   1680篇
  2001年   2487篇
  2000年   2428篇
  1999年   1849篇
  1998年   927篇
  1997年   818篇
  1996年   753篇
  1995年   765篇
  1993年   743篇
  1992年   1475篇
  1991年   1398篇
  1990年   1365篇
  1989年   1254篇
  1988年   1235篇
  1987年   1171篇
  1986年   1180篇
  1985年   1264篇
  1984年   1017篇
  1983年   893篇
  1982年   732篇
  1979年   1034篇
  1978年   764篇
  1976年   716篇
  1975年   870篇
  1974年   1001篇
  1973年   984篇
  1972年   875篇
  1971年   765篇
  1969年   718篇
  1968年   904篇
  1967年   859篇
  1966年   776篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
231.
The purpose of this study was to investigate differences in scores of 59 mentally retarded adults (mild, moderate, severe, or profound), 133 advantaged, and 130 disadvantaged (low income) children in Grades 1, 2, 3 on the Primary Measures of Music Audiation. Test-retest reliabilities for the Tonal and Rhythm subtests were .81 and .86, respectively, for the retarded group. Analysis of variance indicated that the mildly retarded children performed significantly better than other groups of retarded children on these two tests. 2 x 3 analyses of variance indicated that third graders from both advantaged and disadvantaged groups performed significantly better than the first or second graders on both subtests and that advantaged children performed significantly better than the disadvantaged. However, disadvantaged children made greater gains, especially for third graders, than the advantaged.  相似文献   
232.
233.
The Rosenberg Self-esteem Scale was administered to 550 14- and 16-yr.-old (+/- 6 mo.) girls. Self-esteem scores were categorized by weight and weight by height. Scores on the Quetelet Index for obesity were correlated with self-esteem scores. Mean self-esteem of the low- and middle-weight by height group was significantly higher than the mean of the high-weight by height group. In analyzing weight alone, the self-esteem of the middle-weight group was significantly higher than the self-esteem of the high-weight group. The correlation of the obesity index and self-esteem indicated that as weight increased self-esteem decreased.  相似文献   
234.
From a random sample of 49 patients suffering from torticollis spasmodicus and dependence on alcohol or medicaments, 6 have been selected and are discussed with i view to findings possible mutual influences between the disorders. In particular, premorbid accentuation of personality presented itself as a potential risk factor leading to both tortocollis and alcoholism. In various cases, the patient makes use of alcohol for self-treatment of extrapyramidal-motor symptoms. But such phenomenological developments are preceded by varied constellations of conditions, that have to be taken into account in the treatment.  相似文献   
235.
236.
Midlife depression and the "empty nest" syndrome in Indian women   总被引:2,自引:0,他引:2  
  相似文献   
237.
238.
The constituents of the complex affective experience of envy are delineated, and defenses against each of these constituents are explored. Attention is then called to a common, variably adaptive, and socially approved means of obviating or coping with envious feelings, involving a partial identification and culminating in the conscious experience of "being proud of." A conjecture is made regarding the kind of pathology most likely to interfere with this mechanism.  相似文献   
239.
240.
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