全文获取类型
收费全文 | 6455篇 |
免费 | 83篇 |
国内免费 | 5篇 |
专业分类
教育 | 4307篇 |
科学研究 | 778篇 |
各国文化 | 48篇 |
体育 | 623篇 |
文化理论 | 28篇 |
信息传播 | 759篇 |
出版年
2022年 | 41篇 |
2021年 | 68篇 |
2020年 | 103篇 |
2019年 | 170篇 |
2018年 | 202篇 |
2017年 | 211篇 |
2016年 | 189篇 |
2015年 | 118篇 |
2014年 | 157篇 |
2013年 | 1107篇 |
2012年 | 152篇 |
2011年 | 153篇 |
2010年 | 133篇 |
2009年 | 123篇 |
2008年 | 150篇 |
2007年 | 146篇 |
2006年 | 110篇 |
2005年 | 102篇 |
2004年 | 90篇 |
2003年 | 86篇 |
2002年 | 90篇 |
2001年 | 117篇 |
2000年 | 140篇 |
1999年 | 127篇 |
1998年 | 57篇 |
1997年 | 48篇 |
1996年 | 65篇 |
1995年 | 58篇 |
1994年 | 59篇 |
1993年 | 51篇 |
1992年 | 109篇 |
1991年 | 94篇 |
1990年 | 85篇 |
1989年 | 116篇 |
1988年 | 77篇 |
1987年 | 74篇 |
1986年 | 78篇 |
1985年 | 96篇 |
1984年 | 70篇 |
1983年 | 72篇 |
1982年 | 75篇 |
1981年 | 58篇 |
1980年 | 65篇 |
1979年 | 73篇 |
1978年 | 74篇 |
1977年 | 56篇 |
1976年 | 60篇 |
1974年 | 47篇 |
1973年 | 43篇 |
1969年 | 41篇 |
排序方式: 共有6543条查询结果,搜索用时 15 毫秒
101.
Income is not enough: incorporating material hardship into models of income associations with parenting and child development 总被引:2,自引:0,他引:2
Although research has clearly established that low family income has negative impacts on children's cognitive skills and social-emotional competence, less often is a family's experience of material hardship considered. Using the Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999 (N=21,255), this study examined dual components of family income and material hardship along with parent mediators of stress, positive parenting, and investment as predictors of 6-year-old children's cognitive skills and social-emotional competence. Support was found for a model that identified unique parent-mediated paths from income to cognitive skills and from income and material hardship to social-emotional competence. The findings have implications for future study of family income and child development and for identification of promising targets for policy intervention. 相似文献
102.
Ortiz R Jiménez JE García Miranda E Guzmán Rosquete R Hernández-Valle I Rodrigo M Estévez A Díaz A Hernández Expósito S 《Journal of learning disabilities》2007,40(1):80-92
The aims of this study were (a) to determine whether Spanish children with reading disabilities (RD) show a speech perception deficit and (b) to explore the locus and nature of this perceptive deficit. A group of 29 children with RD, 41 chronological age-matched controls, and 27 reading ability-matched younger controls were tested on tasks of speech perception. The effect of linguistic unit (word vs. syllable) and type of phonetic contrast (voicing, place and manner of articulation) were analyzed in terms of the number of errors and the response time. The results revealed a speech perception deficit in Spanish children with RD that was independent of the type of phonetic contrast and of linguistic unit. 相似文献
103.
Richard Spoth Linda Trudeau Cleve Redmond Chungyeol Shin Mark E. Feinberg Mark T. Greenberg 《Child development》2019,90(6):1847-1855
This study examines crossover effects of adolescent substance misuse preventive interventions on academic success in college. It evaluates pathways of influence on college grades, via effects on school engagement, problem-solving skills, and substance misuse in high school. Data were collected as part of an Randomized Controlled Trial (RCT) evaluating a multicomponent intervention conducted in 28 school districts with middle school students. At age 19, study participants (N = 1,488) enrolled in college reported on college grades. The model fit the data, supporting hypothesized pathways of intervention impacts. Inclusion of a significant direct effect on college grades further improved model fit. Results support the potential for universal substance misuse preventive interventions delivered by community partnerships during middle school to yield effects on long-term academic success. 相似文献
104.
Robinson Clinton Vũ Tú Anh Thị 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2019,65(3):443-470
International Review of Education - In the multilingual environments of Africa, national literacy policies vary in terms of the attention they give to the roles and purposes of local, national and... 相似文献
105.
106.
The complex environmental challenges humanity faces require citizens who are scientifically and environmentally literate. Many environmental education programs are situated in the field where students are immersed in their learning. These field-based activities are engaging but may lack opportunities for students to develop critical thinking and reasoning skills necessary to be environmentally literate. We suggest a socio-scientific issue (SSI) based teaching approach can increase epistemic engagement and lead to student gains in scientific and environmental literacy. This study describes how we modified an existing field-based ecology course, framing the learning around a local environmental socio-scientific issue. We used a convergent parallel mixed-methods approach to examine the changes in socio-scientific reasoning (SSR) over time for high school students in this course as a measure of scientific and environmental literacy. Results indicate that a focused SSI field-based environmental education curriculum can support development of socio-scientific reasoning and environmental literacy competencies among high school students. 相似文献
107.
108.
109.
College students (N = 446) and faculty (N = 97) completed a survey examining views of cheating. Agreement was noted on most situations. When differences were noted, students tended to be stricter than faculty in their evaluations and were more likely than faculty to label a situation as cheating. Opinions and views of cheating were influenced more by behavior, whether “premeditated” or “opportunistic,” than by intention. 相似文献
110.
Margaret Henderson John W. Cyrus Erin R. B. Eldermire Jill T. Boruff Katherine G. Akers Beverly Murphy 《Journal of the Medical Library Association》2022,110(1):1
The Journal of the Medical Library Association (JMLA) selects new editorial board members every year. In the spring of 2021, JMLA used a new process for reviewing and selecting applicants for the limited number of open editorial board positions. This reevaluation of the selection process was spurred by a desire to create a more diverse and representative board. Changes to the procedures for selecting new editorial board members included having an open call for editorial board members, creating an application form, creating a selection committee to screen applicants, creating a form for the selection committee to extract data from applications, and creating a two-step process for screening and then selecting board members. As part of construction of this new process, areas for continued improvement were also identified, such as refining the application form to allow more specific answers to areas of interest to the selection committee. The newly created selection process for editorial board members constitutes a significant change in JMLA processes; however, more can be done to build on this work by further refining the selection process and ensuring that new members are selected in a transparent and streamlined manner. 相似文献