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   2148篇
  免费   40篇
教育   1722篇
科学研究   54篇
各国文化   24篇
体育   103篇
综合类   1篇
文化理论   16篇
信息传播   268篇
  2022年   17篇
  2021年   27篇
  2020年   40篇
  2019年   72篇
  2018年   105篇
  2017年   105篇
  2016年   99篇
  2015年   46篇
  2014年   75篇
  2013年   467篇
  2012年   65篇
  2011年   77篇
  2010年   70篇
  2009年   75篇
  2008年   77篇
  2007年   66篇
  2006年   47篇
  2005年   52篇
  2004年   48篇
  2003年   32篇
  2002年   38篇
  2001年   20篇
  2000年   25篇
  1999年   17篇
  1998年   31篇
  1997年   30篇
  1996年   30篇
  1995年   30篇
  1994年   17篇
  1993年   34篇
  1992年   24篇
  1991年   20篇
  1990年   23篇
  1989年   24篇
  1988年   22篇
  1987年   9篇
  1986年   10篇
  1985年   7篇
  1984年   8篇
  1983年   4篇
  1982年   7篇
  1980年   5篇
  1979年   12篇
  1978年   6篇
  1977年   9篇
  1976年   12篇
  1975年   10篇
  1974年   11篇
  1973年   9篇
  1968年   4篇
排序方式: 共有2188条查询结果,搜索用时 375 毫秒
911.
The present paper examines the relationship between the judge-rated and self-and spouse-reported parenting characteristics of the mothers and fathers of 83 Hyperkinetic/MBD boys, the rated self-esteem of these boys at referral, and their clinical response to CNS medication. Stepwise multiple regression analyses identified five predictors of Self-Esteem Deficits. The direction of the relationships is such that mothers of children with more severe Self-Esteem Deficits did not describe themselves as too strict, were rated higher in the direction of hostility, listed fewer self-reported shortcomings, and described their husbands as too demanding. Fathers of these lower self-esteem boys tended not to describe themselves as too demanding. The size of the multiple correlation indicates that 21% of the measured variation in Self-Esteem Deficits is accounted for by variation in these five significant parenting variables. The severity of Self-Esteem Deficits in these HK/MBD boys is also significantly correlated with the severity of Negative Affect, Aggressive Interpersonal Behavior, and Impulse Control Deficits, three variables which form a factor labelled Aggression. Another stepwise multiple regression analysis identified four predictors of initial response to CNS stimulant medication. The direction of the relationships is such that a more positive drug response is correlated with more inattention in the child, more self-reported mother short comings, more rated love than hostility in the father, and the mother not describing herself as too short-tempered. The size of the multiple correlation indicates that 19% of the measured variation in response to medication is accounted for by variation in these four significant symptom and parenting variables.  相似文献   
912.
Increasingly, professional psychologists are extending their services from school-age children to young handicapped children. Psychological intervention and education issues regarding this group of children are complicated by the fact that the field of early childhood special education itself is in its infancy. This article presents the emerging field of early childhood special education, clarifies some major concerns in educating young handicapped children, and raises issues for school psychologists working in this area.  相似文献   
913.
This study was designed to cross-validate the factor structure of the McCarthy Scales of Children's Abilities for children 5 to 6 1/2 years of age. A factor analysis was performed on a group of 105 children with a mean General Cognitive Index (GCI) of 115.42. The subjects ranged in age from 4–11 to 6–7 with a mean age of 5–6. The age variable was partialled from each score using multiple regression procedures. Five factors were generated, including Verbal Comprehension, Quantitative-Reasoning, Memory, Perceptual-Performance, and Motor factors. These data were subsequently compared to Kaufman's factor analytic studies with the McCarthy standardization group, and to the scale structure of the instrument. In general, the overall factor pattern of this study provides further evidence of the construct validity of the McCarthy Scales for kindergarten children.  相似文献   
914.
915.
916.
In this article, we propose four modifications to the standard Triple Helix innovation model, which consists of the three strands: university, government, industry. First, in view of recent economic, cultural, organizational and ideological changes in many countries, it is now important to introduce a fourth strand to the standard model, namely society. Second, we observe that strands occur in doublets which we refer to as binomials. Examples of doublets include university/society, university/industry, industry/society, etc. Third, the binomials are organized in a hierarchic mode; for example in the university/society binomial, university may be dominant and the society secondary. The hierarchy arrangement proves decisive. Fourth, Helix-driven innovation processes take the form of temporary segmented phases. Using the case study of Dip-Pen nanolithography, we identify four phases where each phase is characterised by specific binomials accompanied by a hierarchy: academic instrument research (university/society); from instrument to tool; company start-up (university/industry); the mature firm and commercialization (industry/society); confirming the societal strand “nanofication”(society/industry). The government strand operates as a recessive component in phases one and four.  相似文献   
917.
918.
A wave equation solution for a moving charge on a simple one-wire, lossless transmission line is presented using Laplace transforms. The effect of lightning charge velocity on line potential as the charge moves along the transmission line is shown mathematically to be discontinuous should the wave velocity become the speed of light.  相似文献   
919.
Needs assessment provides a tool for gathering data which, when applied back upon the situation it addresses, becomes a first step in a change process. A major criticism of needs assessment has been that frequently the process is an exercise, and that the results are seldom actually applied in the planning process. The question arises whether the process, separate from the intended results, can be beneficial to the organization. This article documents a case study in which needs assessment and a change model were applied in conjunction with each other in such a way that the needs assessment process, independent of data collected, served as a change strategy. In this case, while the results of the needs assessment were important to the planning process, the needs assessment process itself, independent of its conclusions, also contributed to the organization's change goals.  相似文献   
920.
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