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   33018篇
  免费   1444篇
  国内免费   26篇
  2020年   374篇
  2019年   484篇
  2018年   669篇
  2017年   632篇
  2016年   731篇
  2015年   477篇
  2014年   579篇
  2013年   2606篇
  2012年   1099篇
  2011年   1101篇
  2010年   639篇
  2009年   714篇
  2008年   923篇
  2007年   944篇
  2006年   826篇
  2005年   723篇
  2004年   724篇
  2003年   646篇
  2002年   662篇
  2001年   1083篇
  2000年   1071篇
  1999年   804篇
  1998年   341篇
  1997年   325篇
  1995年   330篇
  1992年   647篇
  1991年   597篇
  1990年   580篇
  1989年   553篇
  1988年   550篇
  1987年   497篇
  1986年   492篇
  1985年   544篇
  1984年   454篇
  1983年   415篇
  1982年   327篇
  1979年   483篇
  1978年   343篇
  1977年   310篇
  1976年   332篇
  1975年   377篇
  1974年   445篇
  1973年   481篇
  1972年   413篇
  1971年   359篇
  1970年   322篇
  1969年   344篇
  1968年   426篇
  1967年   379篇
  1966年   364篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
881.
882.
The Republic of China is developing its guidance programs energetically and rapidly. The Chinese Guidance Association, a young but vigorous professional association, is devoted to research and development of China's student and industrial personnel programs. This APGA sister association has taken long strides ahead in the past eight years through organization of experimental school and college guidance programs, counselor education, development of tests, and distribution of vocational information materials. It has an ambitious and promising “five-year development plan” blocked out for the period 1966–71.  相似文献   
883.
This paper reports the development of two alternate forms of a scale for measuring attitudes toward school guidance programs. The resulting instrument features a high degree of usability, since it can be easily self-administered in less than five minutes without the necessity for timing or oral directions. The entire questionnaire appears on a single sheet of paper which the subject also uses to record his responses. Scoring and interpretation are likewise outstandingly simple. Preliminary studies indicate that the scale shows promise of possessing satisfactory technical characteristics.  相似文献   
884.
The relationship between the occupational preferences of 147 superior students and their fathers' occupations was traced over the 4-year period that the students attended high schools in Wisconsin. Analysis of the data indicated that both male and female superior students tended to state vocational preferences at the professional level early in high school and to maintain this preference throughout. Their occupational preferences were generally at a higher level than those of their fathers. There was no trend away from general preferences for work at a professional level toward naming of specific occupations within that level. The results suggest that theories of vocational development that imply that stages are passed through during later adolescent periods do not apply to the superior student population of this study.  相似文献   
885.
886.
When S looks at a visual target through prisms, adaptive shifts in reaching behavior occur even though he sees no part of his body through the prisms. These shifts are caused by a change in the judgment of the direction of gaze (oculomotor change), which in turn is caused by two secondary prismatic effects: (a) asymmetry of the visual display and (b) apparent rotation about a vertical axis of a panel or wall facing S. The “asymmetry” factor contributes 22% of the total oculomotor change, and the “rotation” effect contributes the remaining 78%. Oculomotor change is not facilitated by eye-movement activity. The adaptive oculomotor change induces a non-adaptive proprioception change about one-tenth as large as the oculomotor change. These findings are capable of accounting for the previously unexplained results reported by Wooster in 1923, and also for the current controversy about the role of reafferent stimulation in sensorymotor adaptation.  相似文献   
887.
Voluntary attention to one of two static objects in the peripheral field of one eye makes this object more liable to masking by a moving object in the corresponding area of the field of the other eye (Experiment 1).

Positive after images (and probably negative after images) are subject to (binocular) movement masking (Experiment 2).

Movement masking can occur in the field of either eye, but with the displays so far tried the inhibitory influence of a moving object is less in the field of the eye to which it is shown than in the field of the other eye (Experiment 3).  相似文献   
888.
When S looks at a visual target through prisms, adaptive shifts in reaching behavior occur even though he sees no part of his body through the prisms. These shifts are caused by a change in the judgment of the direction of gaze (oculomotor change), which in turn is caused by two secondary prismatic effects: (a) asymmetry of the visual display and (b) apparent rotation about a vertical axis of a panel or wall facing S. The “asymmetry” factor contributes 22% of the total oculomotor change, and the “rotation” effect contributes the remaining 78%. Oculomotor change is not facilitated by eye-movzment activity. The adaptive oculomotor change induces a non-adaptive proprioception change about one-tenth as large as the oculomotor change. These findings are capable of accounting for the previously unexplained results reported by Wooster in 1923, and also for the current controversy about the role of reafferent stimulation in sensorymotor adaptation.  相似文献   
889.
890.
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