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   2122篇
  免费   433篇
  国内免费   230篇
  2785篇
  2024年   11篇
  2023年   53篇
  2022年   61篇
  2021年   68篇
  2020年   109篇
  2019年   117篇
  2018年   97篇
  2017年   113篇
  2016年   90篇
  2015年   79篇
  2014年   88篇
  2013年   332篇
  2012年   69篇
  2011年   79篇
  2010年   66篇
  2009年   68篇
  2008年   80篇
  2007年   87篇
  2006年   103篇
  2005年   99篇
  2004年   80篇
  2003年   82篇
  2002年   75篇
  2001年   52篇
  2000年   66篇
  1999年   50篇
  1998年   29篇
  1997年   31篇
  1996年   35篇
  1995年   29篇
  1994年   29篇
  1993年   27篇
  1992年   35篇
  1991年   6篇
  1990年   12篇
  1989年   15篇
  1988年   14篇
  1987年   11篇
  1986年   14篇
  1985年   28篇
  1984年   18篇
  1983年   15篇
  1982年   19篇
  1981年   18篇
  1980年   19篇
  1979年   22篇
  1978年   18篇
  1977年   33篇
  1976年   19篇
  1975年   14篇
排序方式: 共有2785条查询结果,搜索用时 0 毫秒
931.
This study investigated children's experiences and understandings of the HIV/AIDS pandemic. Grade 3 children (n=31) from the province of KwaZulu-Natal aged between 8–11 years were participants in the study. Data were collected through a four-stage focus group process including activities such as diagrammatic mapping, drawing, timelines, projective techniques and ranking exercises. The findings suggest that the meanings children make about HIV and AIDS are contextual and situational. Moreover, the contexts in which children live act as power sites where struggles over meaning and meaning making occur.  相似文献   
932.
The study investigated the mutual perception of relationships between mothers with day and night shift work and their teenage children. A cross-sectional survey using purposeful sampling was used. Two groups of 35 mothers and their adolescent children completed a Parent-Adolescent Relationship-Questionnaire (Robin, Koepke, Moye & Gerhardstein, 2009). Data was analysed by means of SAS and SPSS programmes. Findings show that adolescent children of day shift working mothers perceive communication and problem solving with their mothers as more efficient than adolescent children of night shift working mothers. Global Distress was lower in day shift mothers and their children. Night shirt work lowers the perceived quality of parenting.  相似文献   
933.
The paper highlights Nsamenang’s social ontogenesis theoretical stance in explaining how participatory pedagogies in socialisation impact not only development but children’s capacity to assume responsibilities for their own development. A synoptic review is presented of widely discussed challenges faced by African children, under the headings of redefining the African personhood and process of child development, poverty and malnutrition, changes in educational systems and poor access to quality education, child labour versus productive participation in the household economy, conflict and war, the HIV/AIDS pandemic and access to health care. Research evidence from Cameroon suggests that despite the challenges and adversities faced by these children, their ingenuity, resilience and cultural assets play an important role in mediating positive outcomes. Building on and expanding Nsamenang’s Africentric perspective on the sustaining power of African indigenous education processes, the paper presents a complementary theory of Mediated Mutual Reciprocity (MMR) that explains how children and learners are the main drivers of the learning process.  相似文献   
934.
Poststroke hemiparetic individuals (n = 9) and a control group (n = 9) completed a frequency-scaled circle-drawing task in unimanual and bimanual conditions. Measures of intralimb spatial and temporal task accuracy and interlimb coordination parameters were analyzed. Significant reductions in task performance were seen in both limbs of the patients and controls with the introduction of bimanual movement. Spatial performance parameters suggested that the 2 groups focused on different hands during bimanual conditions. In the controls, interlimb coordination variables indicated predictable hand dominance effects, whereas in the patient group, dominance was influenced by the side of impairment and prior handedness of the individual. Therefore, in this particular bimanual task, performance improvements in the hemiplegic side could not be elicited. Intrinsic coupling asymmetries between the hands can be altered by unilateral motor deficits.  相似文献   
935.
《The Journal of psychology》2013,147(3):181-186
The authors investigated the post-traumatic stress disorder (PTSD) symptoms of young adolescents who had been directly involved in a disaster in Tehran. The participants were 19 chlidren who had survived a boat sinking in Tehran's city park in 2002. By using the Post-Traumatic Stress Disorder Symptom Scale (PSS; E. B. Foa, D. S. Riggs, C. V. Dancu, & B. O. Rothbaum, 1993) as well as a clinical interview based on the definition cited in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV; American Psychiatric Association, 1994, p. 424), 16 participants (84.2%) were diagnosed with PTSD using the PSS and 17 (89.5%) were diagnosed with PTSD using the psychiatric interview.  相似文献   
936.
937.
The manipulation of small objects requires continuous contributions from both predictive and reactive mechanisms. The authors aimed to study the development of predictive and reactive mechanisms used by children from 6 to 14 years of age to manage impulsive loading. The load of a handheld object was increased rapidly by the drop of a weight hung on the object. The drop was triggered either by the child (predictive condition) or by the examiner (reactive condition). Regardless of the condition, the control strategy was refined with age. Younger children were unable to adapt their grip force (GF) to the friction of their fingers, whereas the older children provided GF that was well adapted to their variable coefficient of friction, thereby producing a secure grip. This reflected either an inadequate amount of force or an inability to integrate cutaneous information from the fingers in younger children. Additionally, a modulation with age for both predictive and reactive mechanisms was observed. All together, the better predictive abilities and the more secure grip exhibited by older children allow decreased slipping and improved performance in an impulsive loading task.  相似文献   
938.
The consistency of moral judgment across five dimensions (immanent justice, moral realism, retribution vs. restitution, efficacy of severe punishment, and communicable responsibility) from two basic, structural components of the cognitive-developmental approach was examined. The two components were (a) the more general concept of level and (b) the more specific concept of stage. Multitrait-multimethod analysis supported the compatibility between the two constructs. The methods differed in their degree of association between the five measured dimensions; the stage technique appeared to be more consistent than the level scale. Finally, comparisons between dimensions indicated that the notion of moral development seems to be multidimensional, vis-à-vis unidimensional, as originally implied by Piaget and later by Kohlberg.  相似文献   
939.
This cross-cultural, developmental study of understanding of the physics of a balance scale involved 2 age groups (5- and 22-year-olds) in 2 countries (the United States and Zimbabwe). A factorial design was used. Each participant solved 6 types of balance scale problems, and the patterns of errors for these problem types were analyzed to determine which rules and concepts the participant used (e.g., whether number of weights was considered). As expected, on average, older participants were more accurate than younger participants, although significant age differences in the Zimbabwean sample were not found for problems solved by weight or distance cues. One finding differing from earlier research was that problems in which the beam balanced were more difficult for all participants. Generally, understanding of the physics of a balance scale appeared fairly similar in the 2 countries. Some cultural practices may account for the findings—in particular, the availability of preschool and age at time of academic specialization in higher education.  相似文献   
940.
The authors investigated children's ability to recognize emotions from the information available in the lower, middle, or upper face. School-age children were shown partial or complete facial expressions and asked to say whether they corresponded to a given emotion (anger, fear, surprise, or disgust). The results indicate that 5-year-olds were able to recognize fear, anger, and surprise from partial facial expressions. Fear was better recognized from the information located in the upper face than those located in the lower face. A similar pattern of results was found for anger, but only in girls. Recognition improved between 5 and 10 years old for surprise and anger, but not for fear and disgust.  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