Designing,building, measuring,and testing a constant equivalent fall height terrain park jump     

Nicola Petrone  Matteo Cognolato  James A. McNeil  Mont Hubbard 《Sports Engineering》2017,20(4):283-292

Previous work has presented both a theoretical foundation for designing terrain park jumps that control landing impact and computer software to accomplish this task. US ski resorts have been reluctant to adopt this more engineered approach to jump design, in part due to questions of feasibility. The present study demonstrates this feasibility. It describes the design, construction, measurement, and experimental testing of such a jump. It improves on the previous efforts with more complete instrumentation, a larger range of jump distances, and a new method for combining jumper- and board-mounted accelerometer data to estimate equivalent fall height, a measure of impact severity. It unequivocally demonstrates the efficacy of the engineering design approach, namely that it is possible and practical to design and build free style terrain park jumps with landing surface shapes that control for landing impact as predicted by the theory.  相似文献   

Exergames ‘as a teacher’ of movement education: exploring knowing in moving when playing dance games in physical education     

Gunn Nyberg  Jane Meckbach 《Physical Education & Sport Pedagogy》2017,22(1):1-14

Background: A fundamental dimension of school physical education (PE) is arguably movement and movement activities. However, there is a lack of discussion in the context of PE regarding what can be called the capability to move in terms of coordinative abilities, body consciousness and educing bodily senses.

Purpose: This article explores and articulates what there is to know, from the mover's perspective, when knowing how to move in specific ways when playing exergames (dance games). Taking different ways of moving as expressing different ways of knowing as a point of departure, the following questions are the focus of this article: (i) How do students move when imitating movements in a dance game, and what different ways of knowing the movements can be described in the student group? (ii) What aspects of the movements are discerned simultaneously through the different ways of knowing the movements? (iii) What aspects seem critical for the students to discern and experience in order to know the movements in as complex a way as possible?

Design and analysis: The theoretical point of departure concerns an epistemological perspective on the capability to move as knowing how with no distinction between physical and mental skills, and also knowing as experiencing aspects of something to know. The data in this study comprise video recordings of students playing Nintendo Wii dance games in PE lessons in a compulsory school (for children aged between 7 and 16 years) in a small Swedish town. There were three PE lessons with four different stations, of which one was Nintendo Wii dance games (Just Dance 1 and 2). In total, the videoed material covers three 60-minute PE lessons, recorded during the autumn of 2012 and in which just over twenty students participated. In the study, we have used video observation as a data collection method. Jordan and Henderson maintain that video observation removes the gap between ‘what people say they do and what they, in fact, do’ (51). To conduct a systematic and thorough analysis of how the students experienced the avatar's movements, we looked for moments where all the students and the avatar could be simultaneously observed. Two video sequences were chosen, showing four students imitating two distinct and defined movements which constituted the basis for a phenomenographic analysis.

Conclusion: The result of the phenomenographic analysis shows different ways of knowing the movements as well as what aspects are discerned and experienced simultaneously by the students. In other words, these aspects also describe knowing in terms of discerning, discriminating and differentiating aspects of ways of moving. By examining a certain exergame's role ‘as a teacher,' we have emphasized the capability to move, from the mover's perspective, as an intrinsic educational goal of PE while highlighting the need for systematically planning movement education.  相似文献   

Introduction: “The Greening (or Not) of America”     

Guest Editor Jane Caputi 《Journal of American culture (Malden, Mass. : 2003)》2012,35(1):1-3

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A methodological approach in the evaluation of the efficacy of treatments for the dimensional stabilisation of waterlogged archaeological wood     

Gianna Giachi  Chiara Capretti  Nicola Macchioni  Benedetto Pizzo  Ines Dorina Donato 《Journal of Cultural Heritage》2010,11(1):91-101

The aim of the work is to set up a methodological approach to verify the effectiveness of the treatments of decayed waterlogged archaeological wood and to point out the proper thermo-hygrometric conditions for its preservation after treatment. The treatments were performed on wood samples of maritime pine (Pinus pinaster Aiton), oak (Quercus sp. caducifolia), elm (Ulmus cf. minor) and strawberry tree (Arbutus unedo L.), obtained from stems pertaining to the original vegetation found in the excavation site of the Ancient Ships in Pisa (Italy), and dated from seventh century BC to second century AD The utilised products were: Polyethylene Glycols (PEG) of various molecular weights, a Polypropylene Glycol (PPG 425), Trehalose (α-D-glucopyranosyl-α-D-glucopyranoside), and their mixtures, and also a Hydroxypropylcellulose (Klucel). The main objective to be pursued by the treatments was considered the stabilisation of the original size and shape of samples. The various steps of this approach were: the execution of a preliminary diagnostic survey on untreated samples; the characterisation of treatment solutions ‘as such’ to establish the property to be monitored during the treatment; the evaluation of the main physical characteristics of wood after the treatment were determined. Among the latter, the coefficient of dimensional stability during the exposure to a series of selected thermo-hygrometric conditions and the retention of consolidants after the treatment. These two measurements allowed the definition of the ‘efficacy of a treatment’, φ_T, a new parameter firstly utilised in this work. It measures the stabilisation capability of the percent unit of retained product, and its value permits to put in evidence the consolidants that stabilise wood with the lowest amount of product. Conversely, it was not possible to measure the Anti-Shrink Efficiency (ASE), one of the most utilised parameters for the evaluation of treatments, because of the serious distortions and fractures observed in all the heavily degraded untreated samples.  相似文献   

Comparison of personality profiles for intellectually gifted students and students outstanding in the fine and performing arts attending self-contained secondary schools     

Frances A. Karnes  Jane C. Chauvin  Timothy J. Trant 《Psychology in the schools》1985,22(2):122-126

The study included 199 intellectually gifted students and 176 students in the fine and performing arts who were administered the High School Personality Questionnaire. The results indicated that the gifted students obtained higher Leadership Potential scores, while the talented students scored higher in Creativity. Several significant differences were found in the personality profiles of the two groups.  相似文献   

Bringing computer training to rural areas     

Jane Barber 《Open Learning》2013,28(2):46-49

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Shena D. Simon and English education policy: inside/out?     

Jane Martin 《History of education》2013,42(5):477-494

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Writing for Social Scientists: How to Start and Finish Tour Thesis,Book, or Article.     

Sharon ABBEY Bev BAILEY  Jane Dubrick  Kathleen Moore  Joyce Nyhof-YOUNG  Erminia Pedretti  Ron Saranchuk 《International journal of qualitative studies in education》2013,26(1):101-102

Underlined by the belief that teachers' critical awareness of their actions is a vital issue in education, this study examines the insights that evolved from a long-term collaboration among seven doctoral students. To prepare for our comprehensive examinations, we collaborated as a study group for one and one-half years. Adopting the dual roles of listener-researcher and narrator-participant, we engaged in dialogue and narrative to convey to each other the meaning of our collaborative experiences. From grounded theory analysis, four elements of collaboration emerged: logistics, social dynamics, empowerment, and change. In order to convey the meaning of our experiences, we create a multiplicity of meanings based on our diverse and lived personal narratives. Finally, our collaborative process challenges academic administrations to examine how well their current policies encourage personal autonomy and cooperative learning approaches for students involved in preparing for their comprehensive examinations.  相似文献   

Beyond access: special education in America     

Lani Florian  Jane West 《欧洲特需教育杂志》2013,28(2):124-132

ABSTRACT

This paper seeks to examine the parallels between many aspects of conductive education and the conceptual framework of Feuerstein's theory of mediated learning. Conductive education is not a treatment administered to remedy some pathology, as is the case with many therapies, but rather a system of education aimed at developing the whole individual. How this process is achieved may be enlightened by reference to Feuerstein's model of mediated learning experience (MLE). Two key aspects of Feuerstein's theory are examined: first, structural cognitive modifiability (SCM), which maintains that every individual's cognitive structures are capable of modifiability, despite barriers of retardation ‐ very much in line with modern neuroscience and its model of the brain as a plastic and adaptable system; and secondly, mediation (MLE), which is the process whereby a more initiated individual acts as a mediator between culture and child and thereby directs the child into preparing an adequate response. A detailed examination with exemplars is then undertaken into the mediation of many different aspects of development, including the three essential mediation processes of intentionality and reciprocity, transcendence and meaning. Finally, the implications of Feuerstein's theory for models of research and evaluation are considered, particularly the need for more qualitative and interactional approaches which maintain ecological validity.  相似文献   

BOOK REVIEW     

Jane Robertson 《International Journal for Academic Development》2013,18(1):79-81

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