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   24404篇
  免费   824篇
  国内免费   11篇
  25239篇
  2019年   231篇
  2018年   341篇
  2017年   383篇
  2016年   394篇
  2015年   250篇
  2014年   328篇
  2013年   1858篇
  2012年   651篇
  2011年   709篇
  2010年   442篇
  2009年   434篇
  2008年   604篇
  2007年   607篇
  2006年   544篇
  2005年   493篇
  2004年   498篇
  2003年   463篇
  2002年   521篇
  2001年   747篇
  2000年   777篇
  1999年   577篇
  1998年   288篇
  1997年   245篇
  1992年   476篇
  1991年   431篇
  1990年   469篇
  1989年   437篇
  1988年   420篇
  1987年   424篇
  1986年   434篇
  1985年   450篇
  1984年   368篇
  1983年   337篇
  1982年   270篇
  1981年   257篇
  1980年   225篇
  1979年   427篇
  1978年   311篇
  1977年   285篇
  1976年   265篇
  1975年   387篇
  1974年   421篇
  1973年   391篇
  1972年   347篇
  1971年   312篇
  1970年   276篇
  1969年   347篇
  1968年   386篇
  1967年   335篇
  1966年   336篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
A guide is provided for selecting small computer maintenance services. Types of available services are described, and a series of questions is answered concerning selection.  相似文献   
43.
44.
45.
This study examined the effect of high and low communication apprehension in conjunction with social and personal settings upon verbal behavior. Step wise multiple discriminant analysis of the data indicated a linear combination of language indices (number of syllables, Noun-Verb/Adjective-Adverb ratio, and phrase repetitions) which discriminated between the high apprehensive-personal setting group and the remaining three groups. Results are discussed relative to theoretical projections and the potential for sensitivity toward communication behavior being operative within the communication apprehension framework.  相似文献   
46.
A comparison of two measures of egocentrism   总被引:1,自引:0,他引:1  
This study examined the relationship between two prominent measures of egocentrism, Enright's Adolescent Egocentrism Scale (AES) and Elkind's Imaginary Audience Scale (IAS), in a sample of 458 adolescents, between 10 and 15 years old. Both correlational and factor analyses indicated that the two measures assess distinctly different phenomena. As predicted, IAS scores were correlated with self-reported levels of shyness, nervousness, and social skills. These results provide partial evidence for the validity of the IAS as a measure of self-consciousness, though not necessarily egocentrism per se. The validity of the AES was not examined.  相似文献   
47.
In this study, 24 professional writers completed a short pencil-and-paper questionnaire on which they indicated how they felt before, at a pause, and after specific writing episodes. The intensity with which they experienced 20 emotions was assessed, as was the frequency with which these emotions were experienced when writing in general. Results indicated that the professionals experienced positive emotions significantly more often when writing in general than they experienced either negative-active or negative-passive emotions. Negative-passive emotions such as boredom, shame, and shyness were particularly rare and weak. During the actual writing process, positive emotions tended to intensify, whereas negative-passive and negative-active emotions resisted change. Sponsorship of writing had little impact on the quality of emotions experienced during the process. The professional poets, however, experienced negative-active emotions significantly more often when writing in general than did the prose writers.  相似文献   
48.
49.
The relative importance of genetic and environmental factors for neuroticism, extraversion, impulsivity, and monotony avoidance were estimated in a sample of 99 monozygotic and 229 dizygotic pairs of twins reared apart (TRA) and a matched sample of 160 monozygotic and 212 dizygotic pairs of twins reared together (TRT). The average age was 58.6 (SD = 13.6); 72% of the twins were 50 or older. Model-fitting analyses verified the importance of genetic factors for all four measures; from 23% to 45% of the total variation was attributable to genetic sources. There was considerable evidence that these factors were operating in a nonadditive manner for extraversion and impulsivity. Shared environment accounted for less than 10% of the variance; some evidence for selective placement was found for neuroticism.  相似文献   
50.
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