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   868篇
  免费   79篇
  国内免费   23篇
  2024年   3篇
  2023年   5篇
  2022年   11篇
  2021年   28篇
  2020年   34篇
  2019年   47篇
  2018年   39篇
  2017年   49篇
  2016年   36篇
  2015年   37篇
  2014年   27篇
  2013年   139篇
  2012年   32篇
  2011年   24篇
  2010年   20篇
  2009年   35篇
  2008年   43篇
  2007年   40篇
  2006年   40篇
  2005年   31篇
  2004年   36篇
  2003年   24篇
  2002年   28篇
  2001年   22篇
  2000年   20篇
  1999年   18篇
  1998年   20篇
  1997年   10篇
  1996年   12篇
  1995年   14篇
  1994年   5篇
  1993年   5篇
  1992年   6篇
  1991年   2篇
  1990年   1篇
  1989年   4篇
  1988年   3篇
  1987年   2篇
  1986年   1篇
  1985年   2篇
  1984年   1篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1976年   3篇
排序方式: 共有970条查询结果,搜索用时 15 毫秒
141.
Abstract

This paper explores the current relevance of Fromm’s concept of reactive violence for understanding particular patients and for generating hypotheses about the world we live in. In his discussion of reactive violence, Fromm gives us a nuanced approach to forms of aggression that can be employed in the service of life. According to Fromm, the aim of reactive violence is preservation, not destruction. It is rooted in fear and, he believes, is the most frequent form of violence. This paper traces the evolution of Fromm’s concept of reactive violence, and considers how it might apply to today’s social and political challenges.  相似文献   
142.
Elias Zafiris 《Axiomathes》2005,15(2):181-190
Using the concept of adjunction, for the comprehension of the structure of a complex system, developed in Part I, we introduce the notion of covering systems consisting of partially or locally defined adequately understood objects. This notion incorporates the necessary and sufficient conditions for a sheaf theoretical representation of the informational content included in the structure of a complex system in terms of localization systems. Furthermore, it accommodates a formulation of an invariance property of information communication concerning the analysis of a complex system.  相似文献   
143.
The basic properties of a dynamic systems approach of development are illustrated by contrasting two simple equations. One, yt+1 = f (yt), is characteristic of dynamic systems models. The other, yi = f (xi), refers to what, for the sake of simplicity, is referred to as the standard developmental approach. We give illustrations from cognitive, language and social development to show the characteristic differences of these two types of models and show their complementarity. The article further compares the “Bloomington” with the “Groningen” approach to dynamic systems theorizing in developmental psychology. It continues with a discussion of two important questions. One involves the issue of measurement and the nature of developmental variables from the viewpoint of dynamic systems. The second concerns the question of short- and long-term time scales in developmental models, which is discussed on the basis of an example, namely dyadic interaction of young children in the context of different social statuses.  相似文献   
144.
Social dynamics in the preschool   总被引:1,自引:1,他引:0  
In this paper, we consider how concepts from dynamic systems (such as attractors, repellors, and self-organization) can be applied to the study of young children’s peer relationships. We also consider how these concepts can be used to explore basic issues involving early peer processes. We use the dynamical systems approach called state space grid (SSG) analysis and consider how it can be expanded beyond the study of dyads to the study of larger social groups and networks. In particular, we explore the role of homophily—that is, behavioral and sex similarity—as factors in the self-organization of young children’s social groups. A dynamic systems approach allows for consideration of peer processes difficult to assess using more traditional approaches.  相似文献   
145.
抗抑郁药应用选择的思考   总被引:2,自引:1,他引:1  
目前市场上可供选择的抗抑郁药越来越多.从系统方法论、医学模式转变和矛盾重点论的角度来阐述临床上应该如何选择用药,才能使治疗效果和医疗费用更符合个体的情况,达到比较和谐的状态.  相似文献   
146.
Rigo  Michel 《Studia Logica》2004,76(3):407-426
For a given numeration system U, a set X of integers is said to be U-star-free if the language of the normalized U-representations of the elements in X is star-free. Adapting a result of McNaughton and Papert, we give a first-order logical characterization of these sets for various numeration systems including integer base systems and the Fibonacci system. For k-ary systems, the problem of the base dependence of this property is also studied. Finally, the case of k-adic systems is developed.  相似文献   
147.
This study examined staff ratings and live observations of externalizing behavior in 149 girls with and without attention-deficit/hyperactivity disorder (ADHD), who participated in all-female naturalistic research camps. Girls' popularity with adult camp staff was hypothesized to explain discrepancies between ratings and observations. Compared to behavior observations, staff ratings overestimated the externalizing behavior of girls who were disliked by staff. In contrast, ratings and observations were consistent for girls who were liked by staff. Among girls who were disliked by staff, unpopularity with peers predicted a larger discrepancy between staff ratings and observations, but peer status made little difference in rating–observation discrepancies of girls liked by staff. All results held after controlling for the participants' ADHD versus comparison status. Results suggest that staff ratings may be biased by personal feelings about children and that direct observations may be more immune to such bias.  相似文献   
148.
Inter-agency collaboration, service coordination, and the creation of successful partnerships among parents, teachers, and human services professionals continues to be a challenge for the development of responsive community-based systems of care for at-risk youth and their families. We explore how one inner-city neighborhood struggles to create successful community partnerships through traditional networking strategies. Our findings identify networking strategies that appear to work and those that do not. Recommendations for improving communication are provided.  相似文献   
149.
Psychologists in academic health systems are in a unique position to impact the dynamic interplay among research, clinical practice, and policy domains. In addition to their specialty expertise in psychopathology, particular types of physical illness and disease, and health promotion, psychologists have substantial knowledge of human behavior, refined scientific skills, knowledge and experience in the effective delivery of clinical services, strengths in written expression, and a collaborative orientation. This combination of strengths makes psychologists extremely well-suited for (a) interdisciplinary efforts to develop and implement evidence-based assessment and intervention strategies with biological, psychological, behavioral, and social components, and (b) leadership and advocacy efforts that impact the quality and availability of health care services.  相似文献   
150.
Nowadays, intelligent connectionist systems such as artificial neural networks have been proved very powerful in a wide area of applications. Consequently, the ability to interpret their structure was always a desirable feature for experts. In this field, the neural logic networks (NLN) by their definition are able to represent complex human logic and provide knowledge discovery. However, under contemporary methodologies, the training of these networks may often result in non-comprehensible or poorly designed structures. In this work, we propose an evolutionary system that uses current advances in genetic programming that overcome these drawbacks and produces neural logic networks that can be arbitrarily connected and are easily interpretable into expert rules. To accomplish this task, we guide the genetic programming process using a context-free grammar and we encode indirectly the neural logic networks into the genetic programming individuals. We test the proposed system in two problems of medical diagnosis. Our results are examined both in terms of the solution interpretability that can lead in knowledge discovery, and in terms of the achieved accuracy. We draw conclusions about the effectiveness of the system and we propose further research directions.  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