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   1979篇
  免费   129篇
  国内免费   36篇
  2144篇
  2025年   4篇
  2024年   32篇
  2023年   61篇
  2022年   43篇
  2021年   80篇
  2020年   141篇
  2019年   142篇
  2018年   108篇
  2017年   130篇
  2016年   104篇
  2015年   70篇
  2014年   117篇
  2013年   279篇
  2012年   40篇
  2011年   70篇
  2010年   39篇
  2009年   58篇
  2008年   54篇
  2007年   62篇
  2006年   59篇
  2005年   53篇
  2004年   44篇
  2003年   38篇
  2002年   38篇
  2001年   18篇
  2000年   12篇
  1999年   21篇
  1998年   14篇
  1997年   18篇
  1996年   10篇
  1995年   9篇
  1994年   15篇
  1993年   9篇
  1992年   20篇
  1991年   5篇
  1990年   6篇
  1989年   4篇
  1988年   10篇
  1987年   5篇
  1986年   12篇
  1985年   9篇
  1984年   10篇
  1982年   9篇
  1981年   14篇
  1980年   12篇
  1979年   4篇
  1978年   11篇
  1977年   4篇
  1976年   10篇
  1975年   3篇
排序方式: 共有2144条查询结果,搜索用时 15 毫秒
101.
This study documents the development of infant crying behavior during the second half of the first year (across a key developmental transition). Two female infants were observed twice a month for 6 months when the infants were between 7 and 14 months of age. The infants exhibited crying behavior that seemed to become more sophisticated with increasing age. This marked a proactive stance in communicating with the mother on the part of the infant. Interestingly, at 11–12 months, “fake crying” was observed during a naturalistic interaction with the mother. This implied that deceptive infant behavior could be seen at quite an early stage.  相似文献   
102.
This study examined how four domain-specific skills (arithmetic procedural skills, number fact retrieval, place value concept, and number sense) and two domain-general processing skills (working memory and processing speed) may account for Chinese children’s mathematics learning difficulties. Children with mathematics difficulties (MD) of two age groups (7-8 and 9-11 years) were compared with age-matched typically achieving children. For both age groups, children with MD performed significantly worse than their age-matched controls on all of the domain-specific and domain-general measures. Further analyses revealed that the MD children with literacy difficulties (MD/RD group) performed the worst on all of the measures, whereas the MD-only group was significantly outperformed by the controls on the four domain-specific measures and verbal working memory. Stepwise discriminant analyses showed that both number fact retrieval and place value concept were significant factors differentiating the MD and non-MD children. To conclude, deficits in domain-specific skills, especially those of number fact retrieval and place value understanding, characterize the profile of Chinese children with MD.  相似文献   
103.
韩国有着悠久的学《易》历史,早在汉代,中国儒学便已传入其国。到李朝时期,作为易学一部分的易图学研究就已经达到了相当高的水平。代表人物是高丽末期、李朝初期的哲学家权近。他在中国易学家周敦颐《周氏太极图》的影响下,创制了《天人心性合一之图》。《天人心性合一之图》与《周氏太极图》的轮廓大体相同,都是黑白相间、酷似人形,反映了太极为本、阴阳互补、天人合一的特征。但《天人心性合一之图》又有它独特的一面,将伦理、心性等问题纳入易学体系,完成对前者的超越。由此可见,中韩易学文化融合的过程中,既有借鉴和吸收,又有创新和超越。  相似文献   
104.
计划-注意-同时性加工-继时性加工,这些基本PASS概念的提出,是为了给传统上将智力作为一个笼统构念的做法提供某种替代的选择。在这一新的理论途径中,我将一般能力分解为对主要认知过程的研究,其中每个认知过程均有其行为、认知和神经心理成分,而且重要的是,每个认知过程均有相应的一组评估测量任务。PASS模型,这一理论框架能够充分包容体现于教育和组织行为中的广泛一系列认知功能。  相似文献   
105.
位于大都市城乡结合部的S市D教会是农民工占多数的教会。调查表明该会信徒的受教育程度较低。其经济状况特点是临时工合同工自谋生计者占多数,收入低于该市平均水平。参加教会活动对其经济活动并未产生明显的影响,但基督教信仰对其经济道德和诚信度有正面意义。同时宗教信仰对处于经济不确定性风险中的信徒有明显的慰藉功能。文章认为D教会并未出现如韦伯所说的新教伦理与经济发展间的促进作用。城乡结合部民工教会信徒经济水平的提高仍有赖于非宗教因素的推动。  相似文献   
106.
The purpose of this study was to explore whether (a) immigrant health care workers (HCW) are more at risk of bullying at work than Danish staff members, (b) this association is increased by previous exposure to bullying and (c) immigrants experience more bullying from supervisors, colleagues and clients/residents. We analyzed cross-sectional baseline data from 5,635 health care students of whom 10.4% were immigrants, and conducted a prospective analysis by following 3,109 of these respondents during their first year of employment. More than a third of the respondents had previous experiences with bullying. The baseline analyses showed that immigrants are more at risk of being bullied during both their theoretical education and trainee periods than their Danish co-students. At follow-up we found that 9.1% of the total cohort had been exposed to bullying at work during their first year of employment, hereof 1.8% frequently. "Non-Western" immigrants had a significantly higher risk of exposure to bullying at work during follow-up than the Danish respondents independent of previous experience with bullying. Danish and immigrant health care workers were more exposed to bullying from co-workers than from supervisors with no statistically significant difference between the Danes and the immigrant groups. Both "Western" and "non-Western" respondents were more at risk of bullying from clients/residents than the Danish respondents.  相似文献   
107.
Cognitive-behavioral models of paranoia have emphasized the potential role of perseverative thinking styles, such as rumination or worry, in the development, maintenance and exacerbation of paranoid beliefs. This study aimed to experimentally test the hypothesis that rumination may play a role in the maintenance or exacerbation of state paranoid ideation. Following a paranoia induction, 37 nonclinical participants were randomly assigned to either a rumination task or a distraction control condition. In accord with main hypothesis, rumination was associated with maintained levels of paranoia, whereas distraction was associated with a decrease in levels of paranoia. These findings suggest that perseverative thinking may play a role in the maintenance of paranoid ideas, which may have implications for our understanding of the maintenance of paranoia and persecutory delusions in the clinical population. Furthermore, the study used a novel experimental paradigm for inducing paranoia, which may prove valuable for future research aiming to elicit paranoid thoughts and feelings in vivo.  相似文献   
108.
Previous research has found a relationship between individual differences in children’s precision when nonverbally approximating quantities and their school mathematics performance. School mathematics performance emerges from both informal (e.g., counting) and formal (e.g., knowledge of mathematics facts) abilities. It remains unknown whether approximation precision relates to both of these types of mathematics abilities. In the current study, we assessed the precision of numerical approximation in 85 3- to 7-year-old children four times over a span of 2 years. In addition, at the final time point, we tested children’s informal and formal mathematics abilities using the Test of Early Mathematics Ability (TEMA-3). We found that children’s numerical approximation precision correlated with and predicted their informal, but not formal, mathematics abilities when controlling for age and IQ. These results add to our growing understanding of the relationship between an unlearned nonsymbolic system of quantity representation and the system of mathematics reasoning that children come to master through instruction.  相似文献   
109.
ABSTRACT

Two main scientific approaches have renewed in the last decade the scientific study of religion: the cognitive and the adaptationist. The former is focused on proximate causes, the latter is looking for ultimate causes of religious beliefs and behaviours. Both approaches are useful and promising. However, in both cases, various important aspects and contexts associated with the origin, acquisition, and transmission of religious beliefs have been neglected. The present paper offers an approach that conjoins both models after reviewing several critical issues, to highlight a distinction between cognitive conditions and structures, on one side; and developments or applications, on the other. As a result greater attention needs to be paid to religious functions and their cultural framework to better understand religion and to explain some current processes, like massive secularization in several areas.  相似文献   
110.
Although the ability to stand from a seated posture is relevant for clinical practice, there are few studies investigating the process of acquisition and refinement of the motor components involved in sit-to-stand movement (STS) in children. Therefore, this longitudinal study aims to describe kinematic characteristics of the STS movement in children from 12 to 18 months, and also to investigate the relationship between changes in STS movement and childrens’ daily-life mobility. Ten healthy children were evaluated at 12,13,14,15 and 18 months of age. A motion analysis system was used to measure total duration of STS movement and angular movements of each joint, and frequencies of successful and unsupported STS were obtained. The Pediatric Evaluation of Disability Inventory was used to assess childrens’ daily-life mobility. Results showed that children tend to increase the frequency of successful trials over the months by reducing the total duration and decreasing peak ankle dorsiflexion and trunk flexion during STS. Children also started to stand up from chair with decreased trunk flexion angle among ages. At the end of the STS, we observed decreases in trunk flexion and knee flexion over age. Furthermore, kinematic characteristics that reflect improvements in STS movement are related to better performance of functional skills and decreased level of assistance provided by the caregiver in daily-life mobility of younger children. However, the strength of these associations decreases from 14 months of age onwards.  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