全文获取类型
收费全文 | 2459篇 |
免费 | 61篇 |
国内免费 | 7篇 |
专业分类
教育 | 2034篇 |
科学研究 | 84篇 |
各国文化 | 28篇 |
体育 | 107篇 |
综合类 | 14篇 |
文化理论 | 16篇 |
信息传播 | 244篇 |
出版年
2023年 | 11篇 |
2022年 | 11篇 |
2021年 | 26篇 |
2020年 | 49篇 |
2019年 | 53篇 |
2018年 | 85篇 |
2017年 | 73篇 |
2016年 | 69篇 |
2015年 | 51篇 |
2014年 | 73篇 |
2013年 | 477篇 |
2012年 | 106篇 |
2011年 | 109篇 |
2010年 | 91篇 |
2009年 | 76篇 |
2008年 | 89篇 |
2007年 | 74篇 |
2006年 | 79篇 |
2005年 | 61篇 |
2004年 | 52篇 |
2003年 | 49篇 |
2002年 | 54篇 |
2001年 | 37篇 |
2000年 | 50篇 |
1999年 | 37篇 |
1998年 | 26篇 |
1997年 | 27篇 |
1996年 | 29篇 |
1995年 | 33篇 |
1994年 | 24篇 |
1993年 | 28篇 |
1992年 | 25篇 |
1991年 | 21篇 |
1990年 | 31篇 |
1989年 | 24篇 |
1988年 | 18篇 |
1987年 | 21篇 |
1986年 | 21篇 |
1985年 | 24篇 |
1984年 | 20篇 |
1983年 | 17篇 |
1982年 | 22篇 |
1981年 | 27篇 |
1980年 | 16篇 |
1979年 | 16篇 |
1978年 | 14篇 |
1977年 | 19篇 |
1976年 | 11篇 |
1975年 | 10篇 |
1974年 | 17篇 |
排序方式: 共有2527条查询结果,搜索用时 442 毫秒
241.
Frances A. Campbell Barbara H. Wasik Elizabeth Pungello Margaret Burchinal Oscar Barbarin Kirsten Kainz Joseph J. Sparling Craig T. Ramey 《Early childhood research quarterly》2008
Adult benefits for participants in Project CARE were compared with those of the Abecedarian Project, a closely related randomized study of early childhood educational intervention for children from low-income families who were at risk of developmental delays and school failure. CARE replicated Abecedarian's young adult treatment-related educational and vocational attainment gains. CARE data also supported the Abecedarian reduction in marijuana use. Treated individuals in both studies reported adopting a more active life style. The average age at birth of a first child, the number of children, and the proportion of teen parents were positively affected in the Abecedarian sample but not in CARE. Finding significant educational and vocational gains lasting into young adulthood in the CARE study reinforces Abecedarian young adult findings and strengthens the case for early childhood intervention for children from low-income families. 相似文献
242.
Most studies of parent–child bookreading have focused on mothers reading to their children. Though the role of fathers in children's lives is widely emphasized, we know almost nothing about father–child bookreading, particularly among low-income families. The present study was designed to examine how often low-income fathers report reading to their children and what the predictors and effects of paternal bookreading are. The fathers in this study were participants in the national evaluation of Early Head Start (EHS) and were recruited via mothers enrolled in the EHS study. Participating fathers were interviewed at home and their children's cognitive and language development were assessed using standardized measures from ages 2 to 5. Results demonstrated a wide variety in frequency of bookreading among fathers. Fathers were more likely to read to their children frequently if they spoke English at home, if they had a high school education, and if their children had better language skills. Fathers’ bookreading predicted children's cognitive outcome. Paternal bookreading did predict children's language outcomes but only for children whose fathers had at least a high school education. 相似文献
243.
This study utilized early reading assessment data from a randomized trial of 210 urban and rural schools in Texas to examine
contextual effects on risk prediction in first and second grade. The primary objective was to examine the roles of (a) individual
differences, (b) the grade 1 classroom, and (c) the pairing of first and second grade teachers in determining grade 2 outcomes
in word reading and fluency. A second objective was to investigate whether the administration format of the assessment (paper,
paper plus desktop, handheld plus desktop) or the level of teacher support (web mentoring, no mentoring) moderated the prediction.
These moderator variables proved not to be significant. Subsequent analyses found that a combination of student pretest and
mean of pretest classroom was a better predictor than student pretest alone. Additionally, the effect of student scores varied
by teacher-pair. On average, intraclass correlations (ICCs) ranged from 6% to 17%. Differences in ICCs at the classroom level
were much greater than at the school level, and differences in urban schools were twice that of rural schools. 相似文献
244.
245.
ABSTRACTPopulation aging is exacerbating the loss of competences in the workforce and simultaneously young people neither in employment nor in education and training (NEETs) are struggling to be reengaged in employment. These issues, which are deemed priorities for the European policy agenda, could be addressed by triggering active aging dimensions, valuing and exploiting older adult entrepreneurs’ knowledge for enhancing youngsters’ entrepreneurial attitudes, through mentoring. This paper reports the results of a study based on an intergenerational learning program, carried out in 2018 in Germany, Italy and Slovenia. The study was aimed at developing and testing one training on mentoring addressing 41 older adult entrepreneurs (55 and over), and two intergenerational learning trainings aiming at boosting entrepreneurial competences of 33 NEETs (aged 18–29). The impact of the program on older adult entrepreneurs and NEETs was assessed through a pre and post-evaluation using qualitative and quantitative tools. Findings at country level were treated as national case-studies and then the latter were compared by considering them as a multiple embedded case-study. Results indicated that, to different extent in the study countries, mentors learned and enhanced mentoring competences, e.g. active listening and the capability of orienting, improved well-being and self-esteem, social inclusion and active aging attitude. Moreover, NEETs acquired entrepreneurial and socio-relational competences by benefiting from the full exploitation of mentors’ know-how and the trust relationship with them. Companies, trade unions, educational and voluntary organizations should cooperate to adopt intergenerational learning programs as good practices for older adults and NEETs’ lifelong learning promotion. 相似文献
246.
本文通过确定网络教研功能总体目标,对常规教研的功能性分析,设计功能模块与构建网络教研平台三个步骤对区域网络教研平台的功能框架进行研究,阐明网络教研平台可实现的教研功能、平台包含的功能模块以及在平台中各功能模块之间的关系,对于我国基础教育实践中的相关问题具有一定的指导意义。 相似文献
247.
Eppler Elisabeth Meyer Jan Serowy Steffen Link Karl Pauk Barbara Filgueira Luis 《Research in Science Education》2021,51(2):277-299
Research in Science Education - This educational study aimed to explore the feasibility and acceptance of a literacy exercise adopted from the realworld of scientific publishing in a cell and... 相似文献
248.
Obergfell Anja L. Schmidt Barbara M. Stenneken Prisca Wittemann Sonja K. Schabmann Alfred 《Reading and writing》2021,34(4):887-909
Reading and Writing - This study investigates the effects of prosodic sensitivity on reading. Highly capable adult musicians (i.e., persons with potentially excellent prosodic skills) and... 相似文献
249.
本文作出了北京谱仪主漂移室的径迹拟合程序包,阐述了该程序包的原理,并运用e~+e~-→i/Ψ→μ~+μ~-蒙得卡罗事例进行检验,动量分辨符合要求.该程序包目前已用于北京谱仪J/Ψ物理的研究之中. 相似文献
250.