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   397篇
  免费   38篇
  2020年   7篇
  2019年   8篇
  2018年   10篇
  2017年   10篇
  2016年   10篇
  2015年   15篇
  2014年   9篇
  2013年   42篇
  2012年   27篇
  2011年   9篇
  2010年   12篇
  2009年   7篇
  2008年   7篇
  2007年   14篇
  2006年   14篇
  2005年   7篇
  2004年   5篇
  2003年   13篇
  2002年   19篇
  2001年   12篇
  2000年   12篇
  1999年   7篇
  1998年   4篇
  1997年   4篇
  1992年   5篇
  1991年   4篇
  1990年   6篇
  1989年   3篇
  1988年   5篇
  1987年   5篇
  1986年   3篇
  1985年   3篇
  1984年   7篇
  1983年   4篇
  1982年   5篇
  1980年   3篇
  1979年   11篇
  1978年   3篇
  1977年   5篇
  1976年   8篇
  1975年   5篇
  1974年   6篇
  1973年   5篇
  1972年   7篇
  1971年   4篇
  1970年   5篇
  1969年   10篇
  1968年   6篇
  1967年   3篇
  1966年   4篇
排序方式: 共有435条查询结果,搜索用时 234 毫秒
281.
282.
This paper describes four studies on self-reported problems in 2,243 adolescent males and females, 12 to 17 years of age. In Study 1, principal-axis factoring of 102 items covering 11 problem domains revealed six factors comprising 49.5% of the variance. Study 2 used confirmatory factor analysis of a 64-item reduced set on a new sample of 408 adolescents. Goodness-of-fit indicators suggested that the six-factor model had excellent fit to the data. Study 3 used data from the 2,157 adolescents used in the first two studies. Coefficient alphas ranged from .83 to .92. Median test-retest reliability for the six factors was .86. There was a consistent structure of the correlation matrix across age and gender. Study 4 was a study of criterion validity, using an additional sample of 86 children with attention-deficit hyperactivity disorder (ADHD). Sensitivity and specificity were high, with an overall diagnostic efficiency of 83%. This new self-report scale, the Conners/Wells Adolescent Self-Report of Symptoms (CASS), may provide a useful component of a multimodal assessment of adolescent psychopathology.  相似文献   
283.
284.
Using the New Zealand albino rabbit as an animal model, it has been determined that the medial prefrontal cortex is intimately involved in, and may be necessary for, acquisition of classically conditioned bradycardia. The interconnected nuclei of the medial thalamus, most notably the mediodorsal nucleus, conversely appear to be associated with the development of the tachycardia that accompanies classical conditioning of the eyeblink and nictitating membrane response. Neuroanatomical, electrophysiological, brain stimulation, and lesion data are reviewed, which support the conclusion that the prefrontal-thalamic axis is intimately involved in acquisition of classically conditioned visceral changes.  相似文献   
285.
In any important article in the field of clinical ethics, the focus should not be on the specific case example, but rather on the issues it presents for thought and discussion. Barbara Springer Edwards and Winston M. Ueno achieve this end admirably. They present a terminally ill patient who requested termination of ventilator support, despite the overwhelming odds that he would die as a result. The authors ask whether or not the physician acted appropriately in accommodating the patient's wish and in sedating him to decrease suffering in his last moments. They present compelling arguments that sedation was warranted in this case. They also note correctly that competent patients have the right to refuse treatment. However, in addition to the question of sedation, this case raises other important issues, specifically those related to pain management and depression in the terminally ill....  相似文献   
286.
Voting participation was examined across nine elections in Omaha, Nebraska. Voting frequencies of all eligible voters in the city, all elderly eligible voters, and a random sample of inner-city elderly black voters were compared. The analysis shows that frequency of voting among inner-city elderly black individuals was the same as among all elderly persons in seven of the nine elections and significantly higher than that found among eligible voters of all ages in all nine of the elections.  相似文献   
287.
288.
289.
Continuous and time-sample measures of the in-seat behavior of a secretary were obtained. Measurement error, i.e., the extent to which the sample measures deviated from the continuous measure, was a function of the frequency of the sample measurements and the criterion used to score an example of the behavior. If the behavior had to be exhibited throughout the observational interval (whole-interval time sampling), there was a consistent underestimate of the continuous measure. If the behavior had to be exhibited only briefly within the observational interval (partial-interval time sampling), there was a consistent overestimate of the continuous measure. And, if the behavior had to be exhibited at the end of the observational interval (momentary time sampling), overestimations and underestimations of the continuous measure occurred about equally often. As expected, the more frequently the sample measures were made the closer was the agreement between the sample and continuous measures. Two conclusions concerning measurement error in interval time sampling were made. The first was that the error will be a function of the mean time per response. The second is that this error will not be consistent across experimental conditions.  相似文献   
290.
Little research has been conducted on ineffective behavior or bad characteristics of managers as contrasted with effective behavior or good characteristics. This study examines the perceived characteristics of bad managers as well as good managers. In contrast to a stereotypical view of the good manager as masculine, bad managers were seen by business students as low in both masculinity and femininity, or in nonstereotypical terms. Results were not affected by the relative social desirability of masculine and feminine characteristics.This study was supported by a grant from the University of Connecticut Research Foundation. An earlier version of the article was presented at the 11th Annual Meeting of the American Institute for Decision Sciences, New Orleans, November 1979.  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