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   24575篇
  免费   938篇
  国内免费   13篇
  2020年   247篇
  2019年   313篇
  2018年   417篇
  2017年   467篇
  2016年   490篇
  2015年   367篇
  2014年   422篇
  2013年   2010篇
  2012年   720篇
  2011年   750篇
  2010年   460篇
  2009年   426篇
  2008年   589篇
  2007年   645篇
  2006年   572篇
  2005年   549篇
  2004年   518篇
  2003年   501篇
  2002年   506篇
  2001年   803篇
  2000年   754篇
  1999年   589篇
  1998年   261篇
  1996年   243篇
  1992年   480篇
  1991年   468篇
  1990年   452篇
  1989年   422篇
  1988年   450篇
  1987年   404篇
  1986年   418篇
  1985年   433篇
  1984年   348篇
  1983年   312篇
  1982年   247篇
  1981年   249篇
  1979年   394篇
  1978年   292篇
  1977年   244篇
  1976年   229篇
  1975年   303篇
  1974年   378篇
  1973年   392篇
  1972年   303篇
  1971年   292篇
  1970年   292篇
  1969年   259篇
  1968年   358篇
  1967年   310篇
  1966年   290篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Female subjects were exposed individually to the attitude item responses of a similar or dissimilar stranger. They were asked either to copy down the stranger's attitudes or to predict (with accurate feedback) how the stranger answered each item. Predict subjects were found to be more tolerant of the dissimilar stranger than were Copy subjects, while both groups were equally attracted to the similar stranger. It was suggested that training people to anticipate disagreements may be a useful way of fostering tolerance.  相似文献   
992.
The effect of communicative stress on the frequency of stuttered syllables in 12 adult stutterers reading six different but equivalent passages using normal voicing, whispering, and articulation-without-phonation speech under a stress and a non-stress condition was studied. Although the frequency of stuttering was significantly greater in the normal voicing mode than in the whispering mode and greater in the whispering mode than in the articulation-without-phonation mode, no differences were found between the stress and the nonstress conditions with respect to stuttering.  相似文献   
993.
Human subjects learned a key-pressing response in order to avoid or escape shock. The reinforcement contingencies were then changed to punishment or to regular nonpunished extinction. The locus of shock onset and offset was systematically varied during the punishment phase. More subjects reported awarencess of the change in the nonpunished extinction group. By inference, the punished groups responded more, and thus the results appear analogous to animal studies on vicious circle, self-punitive responding. Discriminability of change from acquisition to extinction appeared to affect detection of the change.  相似文献   
994.
Counselors, perhaps wore than most other professionals, practice writing avoidance. This article suggests a functional avoidance system based on empirically validated methodologies. A step-by-step method is proposed as well as ways to handle inevitable pressures and paradoxes.  相似文献   
995.
Using either a gas chromatography or an infrared absorption technique, series of blood alcohol concentrations (BACs) determined by breath tests were obtained from human subjects immediately subsequent to their having only oral contact with beverages ranging in ethyl alcohol concentration from 4% to 95% +. Times for total dissipation of mouth alcohol residuals to a level of practical nonsignificance ranged from 10 to 19 min. Dissipation rates were an inverse and approximately exponential function of the ethyl alcohol concentration of the beverage and were greatly shortened by rinsing the mouth with warm (34°C) water prior to testing. The results are discussed in terms of their relevance to the methodology of a number of research studies employing BAC breath-testing equipment.  相似文献   
996.
This article describes a new solution to the dilemma faced by investigators who need dedicated computers but cannot afford the cost of expensive peripherals. An available software-hardware combination is described that permits users to timeshare expensive peripherals but to have a dedicated microprocessor at their disposal.  相似文献   
997.
998.
999.
1000.
Subjects were presented either with models set at an angle or with photographs of such models. They were required to remember the orientation (or the depicted orientation) and to reproduce it using similar models placed on a turntable. It was found that the subjects showed a systematic tendency to reproduce the settings of the depicted models as being closer to the one of the two ‘typical’ settings (profile and face on) than they really were. The continuum between the two ‘typical’ settings appeared to be divided into two unequal zones and the sense of the error made was dependent on the zone from which the stimulus originated. No similar effects were observed in the responses made to models.  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