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   1247篇
  免费   50篇
  1297篇
  2022年   13篇
  2021年   20篇
  2020年   26篇
  2019年   26篇
  2018年   43篇
  2017年   52篇
  2016年   41篇
  2015年   27篇
  2014年   27篇
  2013年   137篇
  2012年   39篇
  2011年   51篇
  2010年   29篇
  2009年   40篇
  2008年   49篇
  2007年   39篇
  2006年   33篇
  2005年   29篇
  2004年   47篇
  2003年   25篇
  2002年   29篇
  2001年   29篇
  2000年   26篇
  1999年   39篇
  1998年   24篇
  1997年   18篇
  1996年   15篇
  1995年   20篇
  1994年   20篇
  1993年   21篇
  1992年   18篇
  1991年   19篇
  1990年   15篇
  1989年   10篇
  1988年   8篇
  1987年   8篇
  1986年   8篇
  1985年   9篇
  1984年   9篇
  1980年   7篇
  1978年   9篇
  1976年   7篇
  1975年   11篇
  1974年   17篇
  1973年   8篇
  1972年   8篇
  1970年   9篇
  1968年   11篇
  1967年   7篇
  1966年   8篇
排序方式: 共有1297条查询结果,搜索用时 15 毫秒
11.
Some previous publications have indicated that the creative skills of chemists tend to decline once they are past their thirties or early forties. These conclusions have been based on such criteria of creativity as merit ratings, citations in the literature, etc. In the present study, patent records for all 89 professional men (mostly chemists and chemical engineers) in one division of a large industrial scientific organization were analyzed to determine whether creativity as measured by the production of patentable ideas tended to decrease with age, to increase, or to remain about the same. In the statistical treatment of data both longitudinal and cross-sectional methods were used. All the results were consistent in revealing no decline in creative productivity with increase in age, and indicated instead a tendency for productivity to increase as chemists mature.  相似文献   
12.
The statistical simulation program DATASIM is designed to conduct large-scale sampling experiments on microcomputers. Monte Carlo procedures are used to investigate the Type I and Type II error rates for statistical tests when one or more assumptions are systematically violated-assumptions, for example, regarding normality, homogeneity of variance or covariance, mini-mum expected cell frequencies, and the like. In the present paper, we report several initial tests of the data-generating algorithms employed by DATASIM. The results indicate that the uniform and standard normal deviate generators perform satisfactorily. Furthermore, Kolmogorov-Smirnov tests show that the sampling distributions ofz, t, F, χ2, andr generated by DATASIM simulations follow the appropriate theoretical distributions. Finally, estimates of Type I error rates obtained by DATASIM under various patterns of violations of assumptions are in close agreement with the results of previous analytical and empirical studies; These converging lines of evidence suggest that DATASIM may well prove to be a reliable and productive tool for conducting statistical simulation research.  相似文献   
13.
Although consultation researchers and practitioners have called attention to the need for more psychometrically sound instruments, little advancement has occurred in this area. The authors outline key quantitative and qualitative psychometric standards for organizational consultation assessment and evaluation instruments. In addition, a framework and review of several existing questionnaires are presented. Implications for instrument use by practitioners and suggestions for further research are discussed.  相似文献   
14.
There is a growing concern for quality care in residential placements outside of the natural family for children and youth with developmental disabilities. Ideally, children with developmental disabilities should remain with their natural parent or parents of parents with appropriate supports until the age when children typically leave home. In reality, parents of children and youth with development disabilities are not always able or willing to care for their children at home, and alternate residential placements must be found. This paper will discuss some of the issues surrounding the provision of quality care in out-of-home residential placements for children and youth with developmental disabilities.  相似文献   
15.
16.
Piper Purcell  Lara Stewart 《Sex roles》1990,22(3-4):177-185
This study is a replication of the 1972 study Dick and Jane as Victims done by Women on Words and Images. The original study examined 134 children's readers, and found sex stereotyping in both number of times males and females appeared, and the activities in which they were shown. The replication is a content analysis of 62 children's readers in use in 1989 to determine if males and females were still shown in sex-stereotyped roles. It was found that although there are still differences in the rate of portrayal for males and females, and in the variety of roles assigned to each, the differences are not as pronounced as they were in 1972.  相似文献   
17.
18.
Book reviews     
Integrative Psychological and Behavioral Science -  相似文献   
19.
A technique is described for rapidly collecting responses in auditory-localization experiments. Subjects indicate the perceived direction of the sound by pointing at a 20-cm-diam spherical model. In Experiment 1, the subjects judged the direction of a broadband signal, which could originate from any of 239 directions ranging through 360° of azimuth and between ?45° and +90° of elevation. Using this technique, the subjects responded 2–8 times more rapidly than previous subjects who used either a verbal-reporting technique or a head-pointing technique. Localization judgments were as accurate as they had been with verbal reports, but were not as accurate as judgments collected using the head-pointing technique. In Experiment 2, the signal was turned off and the experimenter read the spherical coordinates of the signal location to the subjects. The subjects pointed to these coordinates more accurately than they had judged the direction of the sounds in Experiment 1, suggesting that the response technique had not been the limiting factor in that experiment. Circumstances relevant to the choice of response techniques for auditory-localization experiments are discussed.  相似文献   
20.
This study of female and male undergraduate business majors explored the relationship of their preferred future career-marriage arrangement to their relationship and work values, work motivation, and gender role orientation Results indicate that the dual-career, career-job, and career-home groups showed significant differences on these dimensions. Additionally, sex and gender role differences reflected cultural stereotypes of achievement orientation in men and barriers to career pursuits of women. The results are discussed in terms of interpersonal, intrapersonal, and societal factors underlying career-marriage aspirations. Implications for practitioners and suggestions for future research are given.  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