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   76946篇
  免费   1033篇
  国内免费   3篇
  77982篇
  2020年   697篇
  2019年   815篇
  2018年   4225篇
  2017年   3655篇
  2016年   3204篇
  2015年   1054篇
  2014年   1131篇
  2013年   5077篇
  2012年   2463篇
  2011年   4071篇
  2010年   3451篇
  2009年   2567篇
  2008年   3230篇
  2007年   3633篇
  2006年   1555篇
  2005年   1471篇
  2004年   1469篇
  2003年   1362篇
  2002年   1252篇
  2001年   1971篇
  2000年   1871篇
  1999年   1380篇
  1998年   657篇
  1997年   573篇
  1996年   628篇
  1995年   570篇
  1994年   557篇
  1993年   545篇
  1992年   1129篇
  1991年   1039篇
  1990年   1012篇
  1989年   973篇
  1988年   943篇
  1987年   879篇
  1986年   868篇
  1985年   914篇
  1984年   746篇
  1983年   643篇
  1982年   504篇
  1979年   772篇
  1978年   576篇
  1975年   619篇
  1974年   700篇
  1973年   718篇
  1972年   618篇
  1971年   579篇
  1970年   497篇
  1968年   621篇
  1967年   538篇
  1966年   514篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
981.
982.
983.
Directional judgments are typically slower when relative location is described by the words “east” and “west” or “right” and “left” than when described by the words “north” and “south” or “up” and “down.” A series of experiments are reported that disentangle verbal from perceptual encoding explanations for right-left difficulty. Overall, our results support a verbal encoding explanation for right-left confusion in the adult. Experiments 1-3 demonstrate that in a response-differentiation task, it is response to the labels “north,” “east,” “south,” and “west” that is responsible for right-left confusion. In addition, Experiments 4-6 demonstrate that right-left difficulty in a mirror image discrimination task is contingent on the use of directional labels. (The data also suggest that it may be more difficult to deal with “up,” “down,” “left,” and “right” than with “north,” “south,” “east,” and “west”) The data are interpreted as inconsistent with a bilateral symmetry explanation for right-left confusion.  相似文献   
984.
The intuitionistic consequence operation restricted to the language with (equivalence) and (negation) as the only connectives is axiomatized by means of a finite set of sequential rules of inference.To the memory of Professor Roman Suszko  相似文献   
985.
The development of automatic word recognition as a function of reading skill was investigated in three experiments using the Stroop task. Reading skill level ranged from nonreaders to readers above the sixth-grade equivalent. Interference with color naming begins to emerge early in the process of learning to read, increases, and then subsequently decreases. Strings of identical letters delayed color naming for children just beginning to learn to read. The interference from words, presumably reflecting semantic processing, began developing early but did not peak until the second- to fourth-grade reading levels. These different sequences of development of interference in the various stimulus conditions suggest that word recognition is the result of a number of component processes that develop as children acquire skill in reading.  相似文献   
986.
The science of family systems has begun to develop concepts and methods for objectively assessing important characteristics of families. Thus we now have ways of measuring differences among families with respect to cohesiveness, flexibility, clarity of communication, and shared views of social reality. We know practically nothing, however, about the origins of these differences among families. One possibility is that the skills or personal attributes of one or more individual members influences the characteristics of the family as a whole. This paper explores the hypothesis that the perceptual styles of individual members--the ways they organize their experience of their personal stimulus world--influence the shared perceptions the family develops of the social world in which it lives. We explored relationships between nine measures of perceptual style and problem-solving measures of the family's shared perception of its social world. The findings showed many similarities among members of the same family on several measures of perceptual style. However, perceptual style had only a few relationships with family performance in the problem-solving task.  相似文献   
987.
This paper presents a model for a therapeutic approach to the cultural systems of families. Using anthropologically derived concepts of material and ideational planes of culture, magic, and ritualistic intervention, the inducement of culture change in frozen familial systems is framed in dialectical terms. Four brief case studies are presented describing the systems engaged, the material-ideational rituals employed, and the cultural transformations induced. The paper concludes with a brief discussion of some of the theoretical and practical implications of this cultural approach to the family in therapy.  相似文献   
988.
In the past several decades, changes in industrial societies have presented a host of issues, worldwide in scope, around which individual attitudes may form: technological growth, population expansion, environmental quality, global resources, differing societal goals, etc. This study (N= 325) was conducted to identify and assess the major attitude/belief constellations surrounding these issues and to examine their psychological basis and implications for risk perception and societal decision-making procedures. Results supported the hypotheses that assessed contemporary worldviews are related in predictable ways to (a) the pexceived risk associated with selected technologies, (b) preferences for the manner in which societal decisions should be made, and (c) a coherent set of psychological variables. Discussion focuses on policy implications of differing contemporary worldviews and on future directions and applications of this line of research.  相似文献   
989.
990.
A course in computer literacy was taken by 16 female elementary education majors specializing in mathematics. Results indicated that the students were dissimilar to the typical female college sample and to predicted occupational groups.  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