Roberto Scazzieri and Raffaella Simili (eds.): <Emphasis Type="Italic">The Migration of Ideas</Emphasis>     

Mark Walker 《Minerva》2010,48(1):101-104

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The application of inertial measurement units and functional principal component analysis to evaluate movement in the forward 3½ pike somersault springboard dive     

Cherie Walker  John Warmenhoven  Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(2):146-162

Based on technological and analytical advances, the capability to more accurately and finitely examine biomechanical and skill characteristics of movement has improved. The purpose of this study was to use Inertial Measurement Units (IMUs) and Functional Principal Components Analysis (fPCA) to examine the role of movement variability (assessed via angular velocity), on 2 divers (1 international level; 1 national) performing the forward 3½ pike somersault dive. Analysis of angular velocity curves during ive-flight identified 5 fPCs, accounting for 96.5% of movement variability. The national diver’s scatter plots and standard deviation of fPC scores illustrated larger magnitudes of angular velocity variability across dive flight. For fPC1 and fPC3, magnitudes of SD variability were 282.6 and 201.5, respectively. The international diver illustrated more consistent angular velocity profiles, with clustering of fPCs scores (e.g., fPC1 & 3 = SD’s of 75.2 & 68.0). To account for lower variability in the international diver, the ability to better coordinate movement sequences and functionally utilise feedback in response to initiation of the somersault position is highlighted. Overall, findings highlight how both IMUs and fPCA can more holistically and finitely examine the biomechanical and skill characteristics of movement sequences with the capability to inform athlete development.  相似文献   

Mormon Melodrama and the Syndication of Satire,from Brigham Young (1940) to South Park (2003)          下载免费PDF全文

David Walker 《Journal of American culture (Malden, Mass. : 2003)》2017,40(3):259-275

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Student use of a computer     

R. J. Walker 《Educational Studies in Mathematics》1968,1(1-2):111-117

Sans résumé

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Student use of a computer

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The chemical basis of plant forms     

Helen C. De. S. Abbott 《Journal of The Franklin Institute》1887,124(3):161-185

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The production of arsenic as a by-product in sulphuric acid manufacture     

Edward Walker 《Journal of The Franklin Institute》1908,165(3):215-216

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The experiences of a UNESCO expert in Finland     

David A. Walker 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1966,12(3):280-287

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Children's heart rate reactivity responses to three school tasks     

Christopher F. Sharpley  Geraldine M. Parsons  Helen Tillinh 《Psychology in the schools》1989,26(4):411-414

The effects of three routine classroom tasks upon heart rate reactivity were investigated with a sample of 30 typical fifth-grade children. Instructions for a mental arithmetic task, the mental arithmetic task itself, and silent reading were administered under standardized conditions, with a reward being offered for performance on the mental arithmetic task to enhance competition. Heart rate was individually monitored each second during these tasks, and data were collected on mental arithmetic performance and reading ability. Results indicated that some children showed large increases in their heart rates during the three tasks, and that these children should be considered as at-risk in terms of their cardiac health.  相似文献   

Developmental dyslexia,cerebellar/vestibular brain function and possible links to exercise-based interventions: a review     

Debbie Pope  Helen Whiteley 《欧洲特需教育杂志》2013,28(1):109-123

The Phonological Processing Deficit (PPD) hypothesis remains the most influential theory to explain why some children fail to acquire appropriate reading skills. However, current research suggests that there may be other deficits operating, and that the phonological processing deficit may be just one manifestation of a deeper underlying anatomical syndrome that originates in the cerebellar or vestibular areas of the brain. Claims that exercise regimes or programmes of vestibular stimulation may provide a ‘cure’ for developmental dyslexia (specific reading difficulties) prompt scepticism among the scientific community and raise concerns about the exploitation of vulnerable parents. The paper provides a review of research into the causes of specific reading difficulties at the behavioural, cognitive and biological level of explanation, and considers whether or not there is any theoretical basis for the use of exercise-based intervention programmes. Following consideration of recent findings from a range of scientific disciplines, it is concluded that such ‘unconventional’ methods of intervention may draw some theoretical support from the scientific literature, although researchers are cautioned to be wary of comorbidity issues. It is also concluded that more rigorous and independent evaluations of the success (or otherwise) of exercise-based interventions are needed.  相似文献   

Recommending and being recommended     

Helen C. Lee 《The Teacher Educator》2013,48(1)

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