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   670篇
  免费   16篇
  686篇
  2022年   5篇
  2020年   7篇
  2019年   15篇
  2018年   13篇
  2017年   24篇
  2016年   14篇
  2015年   16篇
  2014年   15篇
  2013年   69篇
  2012年   25篇
  2011年   18篇
  2010年   10篇
  2009年   13篇
  2008年   26篇
  2007年   23篇
  2006年   24篇
  2005年   25篇
  2004年   26篇
  2003年   28篇
  2002年   24篇
  2001年   19篇
  2000年   17篇
  1999年   12篇
  1998年   10篇
  1997年   9篇
  1996年   6篇
  1995年   4篇
  1994年   16篇
  1993年   10篇
  1992年   12篇
  1991年   9篇
  1990年   10篇
  1989年   6篇
  1988年   6篇
  1987年   9篇
  1985年   5篇
  1984年   9篇
  1983年   4篇
  1982年   6篇
  1981年   5篇
  1980年   4篇
  1979年   6篇
  1978年   4篇
  1976年   6篇
  1975年   5篇
  1974年   6篇
  1973年   6篇
  1972年   7篇
  1971年   4篇
  1967年   4篇
排序方式: 共有686条查询结果,搜索用时 0 毫秒
141.
142.
Gaymon L. Bennett  Sr. 《Dialog》2003,42(2):161-166
Nineteenth-century Jesuit priest and poet, Gerd Manley Hopkins (1844–89), produced poems on natural themes which were not only revolutionary for their structure and style but also disctinctive and forward-looking for their treatment of the environment. In these poems, he presents nature as intrinsically (rather than instrumentally) valuable, God as concerned with the salvation not only of humans but of the environment, and humankind as responsible noy only for polluting the Earth but for participating in its salvation. Christian poets of the twenty-first century need to hees and follow Hopkin's example.  相似文献   
143.
144.
145.
This study asked the question, “Will the motor pattern to a perceived two-dimensional (2-D) object differ from that same object when it is perceived as three dimensional (3-D)?” Subjects were required to reach and grasp an apple that could appear to be 2-D or 3-D. Two experimental sessions were conducted. In Condition A, the apple was initially perceived to be 2-D, but, for 20% of trials, it suddenly shifted to a 3-D apple at movement onset. In Condition B, the apple was initially perceived to be 3-D, but, for 20% of trials, it suddenly shifted to a 2-D silhouette of the same apple. For control trials, subjects grasped the perceived 2-D apple as if it were a disc (82%), and they grasped the 3-D apple, as they would a normal apple, with a whole-hand grasp (86%). For Condition A perturbed trials, there was a rapid change from a 2-D precision grip to a 3-D whole-hand prehension, whereas the converse was true for the opposite perturbation. Peak acceleration was anticipated for Condition A perturbed trials but not for Condition B perturbed trials. These results indicate that the motor patterns we use in interacting with an object are strongly influenced by the way we perceive the object in real time, and that object affordances, such as dimension, can override the influence exerted by existing representations.  相似文献   
146.
Staff performance in a residential child-treatment facility was measured by counting the number of jobs completed and number of new procedures implemented within one week of their assignment. Public notices were posted listing each staff member's duties and new procedures to be implemented during the week. The notices produced an immediate increase in performance levels, which quickly tapered off. Staff members were then given tokens worth $1.00 each for performing jobs and implementing procedures within one week of assignment. The tokens regained and sustained high levels of performance when used in conjunction with the public notices. The use of public notices alone and tokens alone maintained better performance than baseline levels, but neither was as effective in starting and maintaining high-performance levels as was the combined use of the two.  相似文献   
147.
The Adjective Check List (ACL) was employed in the empirical definition of male and female stereotypes by 50 male and 50 female college student subjects. Judgments by male and female subjects correlated highly. There were 33 male adjectives and 30 female adjectives on which at least 75% of both sexes agreed. With a 60% agreement criterion, there were 98 male and 83 female adjectives. Both male and female stereotypes were treated as hypothetical persons and were shown to be highly deviant on standard ACL norms, with the male stereotype being more deviant and perhaps more “disturbed” than the female stereotype. It was concluded that the ACL is a promising method for the definition and study of sex stereotypes.  相似文献   
148.
Children at four age levels (4, 6, 8, and 10 years) were given continuous recognition tasks using concrete noun, abstract noun, and pictorial stimuli in a 4 × 3 factorial design. Pictures were recognized significantly better than concrete and abstract nouns at the 4- and 6-year age levels and significantly better than abstract nouns at the 8- and 10-year age levels. This supported Paivio's contention that pictures are easier to remember than words because of a greater possibility of dual encoding, while Rohwer's contention that there is a shift in recognition memory development received no support. There were no significant differences between recognition of concrete and abstract nouns at any age level, which opposed the findings from adult studies and suggested that Paivio's theoretical orientation would have to be extended in order to account for developmental data. Recognition for both concrete and abstract nouns was found to be linear and increasing significantly with age, but no age trends for picture recognition were found.  相似文献   
149.
150.
In a drug-discrimination procedure using conditioned taste aversions, a pentobarbital injection signaled a taste–toxin pairing while the vehicle injection signaled the same taste in the absence of the toxin. In transfer tests, drug states transferred control over consumption to other targets. If the training target was a fluid (saccharin), then transfer occurred to other fluids (both novel and familiar) but not to solid food. If the training target was food, then some transfer occurred to novel targets (both fluids and solid food) but not to familiar targets. Control rats revealed that the differential consumption seen during acquisition and during transfer tests was not due to the summation of two simple associations (i.e., drug–toxin and flavor–toxin) but rather reflected conditional control over consumption by the drug state.  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