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In this paper, different perspectives on the role of the teacher in a classroom equipped with personal digital assistants (PDAs) are presented. We report on four classroom studies conducted in two countries, Norway and the USA. The overall aim is to understand the use of new tools in different contexts. The key question that we explore concerns the teachers’ pedagogical use of the new tool and why certain tools are adopted and others are not. In one case, the activities simulated the affordances and constraints of the tools used prior to the PDA. In the other case, the activities harnessed the affordances and constraints offered by the successor tool, the PDA. We raise the question as to why these tools were used in two different ways. We analyse our findings in terms of sociocultural theory and concepts of human–computer interaction. Finally, we summarize our results and discuss some educational implications. 相似文献
585.
‘Open data’ has recently emerged as a label for renewed attempts to promote scientific exchange. As part of such efforts, the posting of data online is often portrayed as commonly beneficial: individual scientists accrue greater prominence while at the same time fostering communal knowledge. Yet, how scientists in non-Western research settings assess such calls for openness has been the subject of little empirical study. Based on extended fieldwork with biochemistry laboratories in sub-Sahara Africa, this paper examines a variety of reasons why scientists opt for closure over openness with regard to their own data. We argue that the heterogeneity of research environments calls into question many of the presumptions made as part of open data. Inequalities in research environments can mean that moves towards sharing create binds and dilemmas. These observations suggest that those promoting openness must critically examine current research governance and funding systems that continue to perpetuate disparities. The paper proposes an innovative approach to facilitating openness: coupling the sharing of data with enabling scientists to redress their day-to-day research environment demands. Such a starting basis provides an alternative but vital link between the aspirations for science aired today as part of international discussions and the daily challenges of undertaking research in low-resourced environments. 相似文献
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Izaak Rutenberg Louise Ainscough Kay Colthorpe Tracey Langfield 《Anatomical sciences education》2022,15(6):1018-1031
The transition from secondary to tertiary education can be challenging, as students must adapt to independent learning. For students in the allied health and nursing disciplines, this transition may coincide with compulsory first-year courses in anatomy, which are traditionally difficult to master. Students' agency—their capacity to make intentional choices to alter the path of their learning—may play a role in their successful completion of first-year anatomy courses. This study aimed to develop a measure for agency and to determine whether agency is associated with academic achievement. First-year students (n = 131) completed open-ended questions measuring each aspect of agency. Student responses were quantified using rubrics and then combined to create an overall agency score. Three factors of agency were determined: action, metacognition, and self-efficacy. Students with higher agency scores were significantly more likely to have higher academic achievement in anatomy compared to students with lower agency scores. The relationship between agency and academic achievement was strongest for action. These results suggest that encouraging students to be active participants in their learning may help them to achieve at university. 相似文献
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Young people’s aspirations remain an enduring focus of education policy interest and concern. Drawing on data from an ongoing five-year study of young people’s science and career aspirations (age 10–14), this paper asks what do young people aspire to at age 12/13, and what influences these aspirations? It outlines the main aspirations and sources of these aspirations as expressed by young people in England in the last year of primary school (survey of 9000+ Y6 pupils, aged 10/11, interviews with 92 children and 76 parents) and the second year of secondary school (survey of 5600+ Y8 pupils, aged 12/13, interviews with 85 pupils). We demonstrate how aspirations are shaped by structural forces (e.g. social class, gender and ethnicity) and how different spheres of influence (home/family, school, hobbies/leisure activities and TV) appear to shape different types of aspirations. The paper concludes by considering the implications for educational policy and careers education. 相似文献
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Validating the multimedia activity recall for children and adolescents in a large New Zealand sample
Ralph Maddison Louise S. Foley Tim S. Olds Kate Ridley Yannan Jiang 《Journal of sports sciences》2013,31(5):470-478
AbstractThe aim of the study was to validate the self-report Multimedia Activity Recall for Children and Adolescents (MARCA) against accelerometry for the assessment of physical activity in New Zealand children. Participants (n = 716, 10–18 years) recalled 3–4 days of activity using the MARCA and underwent a partially overlapping 7-day accelerometry protocol during a national survey. Spearman correlation coefficients (ρ) assessed the association between accelerometer-derived counts per minute and MARCA-derived physical activity level and time in locomotion. Both data sources estimated time spent in light and moderate–vigorous physical activity. Association and agreement between methods for light physical activity and moderate–vigorous physical activity was assessed using correlations and Bland–Altman plots respectively, and paired t-tests conducted. Accelerometer-derived activity counts were moderately correlated with both MARCA-derived physical activity level and locomotion (ρ = 0.38, P < 0.0001). The correlation between methods was –0.14 for light physical activity and 0.28 for moderate–vigorous physical activity (P < 0.0001). The MARCA overestimated moderate–vigorous physical activity compared with accelerometry (120 min, P < 0.0001), which increased as moderate–vigorous physical activity time increased. Some sex and ethnicity (Māori [indigenous] versus non-Māori) differences were observed. Overall, the MARCA indicated moderate validity for assessment of physical activity level, locomotion and moderate–vigorous physical activity and poor validity for assessment of light physical activity. This was comparable to other self-report tools. The MARCA has utility for future large-scale research. 相似文献