An investigation of a novel three-dimensional activity monitor to predict free-living energy expenditure     

James Carter  David Wilkinson  Sam Blacker  Mark Rayson  James Bilzon  Rachel Izard 《Journal of sports sciences》2013,31(6):553-561

Abstract

The aim of this study was to assess the capability of the 3dNX? accelerometer to predict energy expenditure in two separate, free-living cohorts. Twenty-three adolescents and 14 young adults took a single dose of doubly labelled water and wore a 3dNX? activity monitor during waking hours for a 10-day period while carrying out their normal routines. Multiple linear regression with backward elimination was used to establish the strength of the associations between various indices of energy expenditure, physical activity counts, and anthropometric variables. 3dNX? output accounted for 27% and 35% of the variance in the total energy expenditure of the adolescent and young adult cohort, respectively. The explained variance increased to 78%, with a standard error of estimate of 7%, when 3dNX? output was combined with body composition variables. The 3dNX? accelerometer can be used to predict free-living daily energy expenditure with a standard error of estimate of 1.65 MJ in adolescents and 1.52 MJ in young adults. The inclusion of anthropometric variables reduces the error to approximately 1 MJ. Although it remains to cross-validate these models in other populations, early indications suggest that the 3dNX? provides a useful method of predicting energy expenditure in free-living individuals.  相似文献   

The disenchantments of educational TV     

John Mercer  Sam Becker 《Educational technology research and development : ETR & D》1955,3(3):173-182

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Why Is It so Hard to Get Good Schools?     

Sam Stringfield 《Journal of Educational Change》2004,5(1):95-97

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Social and Nonsocial Functions of Rostral Prefrontal Cortex: Implications for Education     

Sam J. Gilbert  Paul W. Burgess 《Mind, Brain, and Education》2008,2(3):148-156

ABSTRACT— In this article, we discuss the role of rostral prefrontal cortex (approximating Brodmann Area 10) in two domains relevant to education: executive function (particularly prospective memory, our ability to realize delayed intentions) and social cognition (particularly our ability to reflect on our own mental states and the mental states of others). We review evidence from neuropsychology and neuroimaging suggesting the involvement of rostral prefrontal cortex in these domains and discuss an overarching framework that seeks to characterize these functions in terms of attentional selection between perceptual and self-generated information. In addition, we present neuroimaging evidence in adults suggesting considerable functional specialization within this region. We conclude by discussing implications of these results for education and suggest directions for further research.  相似文献   

Introducing the use of a semi-structured video diary room to investigate students’ learning experiences during an outdoor adventure education groupwork skills course   总被引：2，自引：0，他引：2  

Sam J. Cooley  Mark J. G. Holland  Jennifer Cumming  Emily G. Novakovic  Victoria E. Burns 《Higher Education》2014,67(1):105-121

Outdoor adventure education courses are used in higher education to develop transferable skills such as groupwork and problem-solving skills. There is a need for exploratory investigation into students’ perceptions of this experience. This study aimed to develop an innovative qualitative data collection method, and to use it to explore students’ perceived learning processes and developmental outcomes when taking part in an outdoor groupwork skills course. Participants (n = 40) were undergraduate engineering students who were taking part in the 3 day residential course as part of their degree course. Students’ experiences were captured whilst immersed in the course, using a semi-structured video diary room. Participants entered the diary room at different time points throughout the course and responded to openended questions. Following a thematic analysis, students were found to arrive on the course with mixed feelings towards groupwork and expected learning outcomes. Activities were enjoyable yet challenging, revealing students’ weaknesses and demanding a range of skills and coping methods. The outdoor environment added novelty, risk and natural consequences. Students reported developing a range of skills in groupwork, adaptability, persistence, planning, problem-solving, time-management, communication, leadership, cooperation, group reflection and team spirit, as well as benefits to physical activity, self-confidence, self-awareness, peer and staff relationships and internationalisation. These findings provide a base for future investigation into the long-term impact on student development and skill transfer. The semi-structured video diary room yielded rich data, contributing to the literature by offering a simple, yet effective, qualitative research method that can be implemented in a variety of contexts.  相似文献   

The OECD and the expansion of PISA: new global modes of governance in education          下载免费PDF全文

Sam Sellar  Bob Lingard 《British Educational Research Journal》2014,40(6):917-936

This paper examines the expansion of the OECD's Programme for International Student Assessment (PISA) and associated growth in the influence of the OECD's education work. PISA has become one of the OECD's most successful ‘products’ and has both strengthened the role of the Directorate for Education within the organization and enhanced the significance of the organization in education globally. We provide an overview of the OECD, including organizational changes in response to globalization and the changing place of the Directorate for Education within the organization, particularly with the development of PISA in the late 1990s. We show how the OECD is expanding PISA by broadening the scope of what is measured; increasing the scale of the assessment to cover more countries, systems and schools; and enhancing its explanatory power to provide policy‐makers with better information. The OECD has also developed the Programme for International Assessment of Adult Competencies (PIAAC) and PISA‐based Tests for Schools, which draw on the PISA template to extend the influence of its education work to new sites. The paper draws on data from 33 interviews with past and present personnel from the OECD, the International Association for the Evaluation of Educational Achievement (IEA) and the English and Australian education systems, as well as analysis of relevant OECD documents. We argue that PISA, and the OECD's education work more broadly, has facilitated new epistemological and infrastructural modes of global governance for the OECD in education.  相似文献   

The activation,appropriation and practices of student-equity policy in Australian higher education     

David Peacock  Sam Sellar  Bob Lingard 《教育政策杂志》2014,29(3):377-396

Current national reforms in Australian higher education have prioritised efforts to reduce educational disadvantage within a vernacular expression of neoliberal education policy. Student-equity policy in universities is enmeshed in a set of competitive student recruitment relations. This raises practice-based tensions as universities strive to meet specific institutional targets for low-socio-economic status (SES) and Indigenous student participation, whilst broadening participation more generally within the sector. This paper seeks empirically to trace the activation and appropriation of federal policy through two sites of higher education policy practices: a state government-sponsored equity practitioner body and two differently positioned universities, Dawson and McIllwraith, as they engage with low-SES schools. Working together Dorothy Smith’s insights into the textually mediated activation of local practices, Levinson and colleagues’ concept of the local appropriation of authorised policy, and Bourdieu’s notion of the contested field, we demonstrate that the generation of state level and institutionally specific policies for student-equity practices not only articulates to federal policy, but also appropriates the ruling relations of mandated policy. Further, the scope of these creative local appropriations is organised within a hierarchical academic field through which particular institutional imperatives, as well as the needs of low-SES students, are negotiated. The analysis demonstrates the vernacularisation of policy in the national rearticulation of global discourses, in appropriation at the level of the state body and in the practices of equity workers.  相似文献   

do i know its wrong: children’s and adults’ use of unconventional grammar in text messaging     

Nenagh Kemp  Clare Wood  Sam Waldron 《Reading and writing》2014,27(9):1585-1602

There is concern that the violations of conventional grammar (both accidental and deliberate) often seen in text messages (e.g., hi how is ya?!!) could lead to difficulty in learning or remembering formal grammatical conventions. We examined whether the grammatical violations made by 244 British children, adolescents and young adults in their text messages was related to poorer performance on tasks of grammatical knowledge, including translating grammatically unconventional text messages into standard English. We found that variance in the production of grammatical violations in naturalistic messages was inconsistently predicted by grammatical task performance. Specifically, primary school children who made poorer grammar-based spelling choices were more likely to make more grammatical violations in their everyday messages, and university students who failed to correct more grammatical errors in a given set of messages were also more likely to make such errors in their own messages. There were no significant relationships for secondary school students. We conclude that using unconventional grammar when texting is not a consistent sign of poor grammatical abilities, although there may be links between some aspects of grammatical skill and grammatical violations in text messages.  相似文献   

Private foundation funding of applied communication research     

James Dearing  Sam Larson 《Journal of Applied Communication Research》2013,41(4):358-368

Communication researchers increasingly have a primed and attentive audience in private foundations. Yet most foundations are quite dissimilar to the types of organizations that we as communication scholars know and understand. Here we discuss private foundation funding for applied communication research, including how funding priorities are set, and how potential grantees may position themselves for foundation funds. In doing so, we focus on five norms that characterize American private foundations and their program staff: (1) social betterment, (2) organizational interdependency, (3) personal commitment, (4) future orientation, and (5) external generalizability. How well you and your proposal match up with these norms will affect your success with private foundations.  相似文献   

A “Reflection” at Mile Three of a Marathon: The Memphis Restructuring Initiative in Mid‐Stride     

Sam Stringfield  Steven M. Ross 《School Effectiveness & School Improvement》2013,24(1):151-161

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