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141.
This study reports an analysis of how children in a Japanese kindergarten are scaffolded when facing the challenge of collaboratively retelling a kitsune story they have been told. What is referred to as a kitsune story is an example of a trickster tale with foxes as anthropomorphised animals. The participants were ten 5-year-old children and their teacher. Told a story by their teacher, the children were asked later to collaboratively retell it. How this retelling activity is supported – theorised in terms of the metaphor of scaffolding – is analysed on the basis of recordings. The findings show the nature of this evolving process. The conclusion is that the metaphor of scaffolding may require some contextual specification to remain a functional conceptual – and in extension, pedagogical – tool in activities fundamentally different from the activity studied in Wood, Bruner and Ross’ founding 1976 study.  相似文献   
142.
Abstract

The effect of active and passive recovery on repeated-sprint swimming bouts was studied in eight elite swimmers. Participants performed three trials of two sets of front crawl swims with 5 min rest between sets. Set A consisted of four 30-s bouts of high-intensity tethered swimming separated by 30 s passive rest, whereas Set B consisted of four 50-yard maximal-sprint swimming repetitions at intervals of 2 min. Recovery was active only between sets (AP trial), between sets and repetitions of Set B (AA trial) or passive throughout (PP trial). Performance during and metabolic responses after Set A were similar between trials. Blood lactate concentration after Set B was higher and blood pH was lower in the PP (18.29 ± 1.31 mmol · l?1 and 7.12 ± 0.11 respectively) and AP (17.56 ± 1.22 mmol · l?1 and 7.14 ± 0.11 respectively) trials compared with the AA (14.13 ± 1.56 mmol · l?1 and 7.23 ± 0.10 respectively) trial (P < 0.01). Performance time during Set B was not different between trials (P > 0.05), but the decline in performance during Set B of the AP trial was less marked than in the AA or PP trials (main effect of sprints, P < 0.05). Results suggest that active recovery (60% of the 100-m pace) could be beneficial between training sets, and may compromise swimming performance between repetitions when recovery durations are short (< 2 min).  相似文献   
143.
Abstract

Carnosine was originally discovered in skeletal muscle, where it exists in larger amounts than in other tissues. The majority of research into the physiological roles of carnosine have been conducted on skeletal muscle. Given this and the potential for muscle carnosine content to be increased with supplementation, there is now a large body of research examining the ergogenic effects (or otherwise) of carnosine. More recent research, however, points towards a potential for carnosine to exert a wider range of physiological effects in other tissues, including the brain, heart, pancreas, kidney and cancer cells. Taken together, this is suggestive of a potential for carnosine to have therapeutic benefits in health and disease, although this is by no means without complication. Herein, we will provide a review of the current literature relating to the potential therapeutic effects of carnosine in health and disease.  相似文献   
144.
Twenty five class teachers completed a "Strengths and Difficulties" assessment for 523 children aged from 7 to 11 years of age. Children self-completed a 39-item "My Life in School" questionnaire. One third of the sample were self-reported victims of bullying behaviour. Boys with poor prosocial skills, emotional problems and general difficulties with social interaction, expression of emotion and hyperactivity were at greatest risk of being bullied. There was no significant effect of age. The data support previous research findings that gender influences the prevalence of bullying but not that younger children are more vulnerable. This study provides new evidence that teachers recognise social behaviour and interactions that can significantly affect whether primary school children are bullied.  相似文献   
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147.
The purpose of this study was to examine what, if anything, caregivers and teachers of 3- to 5-year-old children from the U.S. (n = 412), China (n = 244), Taiwan (n = 222), Korea (n = 574), and Turkey (n = 214), had in common in terms of self-reported beliefs and self-reported practices related to the National Association for the Education of Young Children's (NAEYC) policy statement for developmentally appropriate practices (DAP). DAP is widely endorsed by early childhood education and care professionals in the U.S. and is assumed to have far reaching impact on curricular beliefs and practices throughout the world. Pearson correlations and one-way ANOVA were used to compare overall mean scores for beliefs measured by the Teachers Beliefs Scale (TBS) to those of practices measured by the Instructional Activities Scale (IAS) [Charlesworth, R., Hart, C. H., Burts, D. C., & Hernandez, S. (1991). Kindergarten teachers’ beliefs and practices. Early Child Development and Care, 70, 17–35]. Item-by-item analyses were conducted using factor analysis and χ2 analyses within and across countries. Similarities emerged related to, in particular, those beliefs and teaching practices associated with integrating across the curriculum, promoting social/emotional development, providing concrete/hands-on materials, and allowing play/choice in the curriculum.  相似文献   
148.
Reflections about the use of critically reflexive praxis by academic/practitioners are offered based on a case study of a formative evaluation of Circles® USA, a nonprofit organization coordinating initiatives across the U.S. working to move families out of poverty. Critically reflexive praxis is theorized as featuring several themes including acknowledging different levels of context, critical dialogue with collaborators, engaging cultural difference and intersectionalities, problematizing power relations and relationships among researchers and collaborators, and occurring throughout the research project. Examples of critical dialogic reflexivity and navigating common tensions that emerge throughout such community engagement projects are detailed during three phases: planning and design; fieldwork and interviews; and outcomes, applications, and implications.  相似文献   
149.
This article analyses findings from two studies conducted collaboratively across two educational settings, New Zealand and England, in 2001–2002. These studies examined the impact of national educational policy reforms on the nature of primary teachers’ work and sense of their own professionalism and compared these impacts across the two countries. Adopting a policy ethnography approach, using in‐depth interview data from samples of teachers in each country, it is argued that there have been discursive shifts in the meaning of the three key terms, autonomy, altruism and knowledge, embodied in the classical professionalism triangle. These shifts reflect policy‐makers’ moves from a ‘professional‐contextualist’ conception of teacher professionalism towards the ‘technocratic‐reductionist’ conception that accompanies neo‐liberal educational reforms in many countries. Teachers in both countries experienced increasing constraints on their autonomy as they became far more subject to ‘extrinsic’ accountability demands. Whether these demands were perceived as enhancing or diminishing teacher professionalism depended on the manner in which they were filtered through the profession’s defining quality, namely teachers’ altruistic concerns for the welfare of the children in their care.  相似文献   
150.
A technology enhanced learning and teaching (TELT) solution, radiological anatomy (RA) eLearning, composed of a range of identification‐based and guided learning activities related to normal and pathological X‐ray images, was devised for the Year 1 nervous and locomotor course at the Faculty of Medicine, University of Southampton. Its effectiveness was evaluated using a questionnaire, pre‐ and post‐tests, focus groups, summative assessment, and tracking data. Since introduced in 2009, a total of 781 students have used RA eLearning, and among them 167 Year 1 students in 2011, of whom 116 participated in the evaluation study. Students enjoyed learning (77%) with RA eLearning, found it was easy to use (81%) and actively engaged them in their learning (75%), all of which were associated to the usability, learning design of the TELT solution and its integration in the curriculum; 80% of students reported RA eLearning helped their revision of anatomy and 69% stated that it facilitated their application of anatomy in a clinical context, both of which were associated with the benefits offered by the learning and activities design. At the end of course summative assessment, student knowledge of RA eLearning relevant topics (mean 80%; SD ±16) was significantly better as compared to topics not relevant to RA eLearning (mean 63%; SD ±15) (mean difference 18%; 95% CI 15% to 20%; P < 0.001). A well designed and integrated TELT solution can be an efficient method for facilitating the application, integration, and contextualization of anatomy and radiology to create a blended learning environment. Anat Sci Educ 7: 350–360. © 2013 American Association of Anatomists.  相似文献   
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