Drawing and extrusion of superplastic metals through cone-shaped dies

Closed-form solutions are obtained for the stress and die pressure distributions, time and flow rates for drawing and extruding superplastic cylinders through a cone-shaped die with Coulomb friction. Numerical examples are presented graphically and the possible existence of a maximum limit for area reduction in the drawing process is pointed out and discussed.     

Arts education and creativity enhancement in young children in Hong Kong

The present study aimed at assessing Hong Kong young children’s gains in creativity and their teachers’ application of arts education after a one-year artists-teachers collaborative arts education project that involves various art forms (i.e. drama, visual arts and integrated). Participants included 790 young children, 217 parents and 65 teachers in seven kindergartens and nurseries. Measures included the Test for Creative Thinking–Drawing Production, Story-Telling Test (STT), the subscales of parent-rated creativity, communication and motivational characteristics, and the adapted Scale of Application of Arts in the Classroom. Among the three art forms, children in the visual arts group demonstrated highest gains in verbal creativity as evaluated by the STT. Based on parents’ report, there were significant differences in children’s communication characteristics across the three art forms. Significant differences across art forms were also found in teachers’ confidence in teaching arts to 3–4?years old and their perception of arts for arts sake. Both teachers and students take advantage of the professional and artistic input and guidance of practising artists in arts appreciation and production. Implications and limitations were discussed.     

Development and validation of the groupwork skills questionnaire (GSQ) for higher education

The aim of the present study was to develop and provide psychometric evidence in support of the groupwork skills questionnaire (GSQ) for measuring task and interpersonal groupwork skills. A 46-item version of the GSQ was initially completed by 672 university students. The number of items was reduced to 15 following exploratory factor analyses, and a two-factor model consisting of task and interpersonal groupwork skills was revealed. Confirmatory factor analyses with model re-specification on new data (n = 275 students) established that the best fitting model consisted of 10 items and the same two factors (task and interpersonal). Concurrent validity of the GSQ was then determined with 145 participants by demonstrating significant relationships (p < 0.05) with attitudes towards groupwork and groupwork self-efficacy. Test–retest reliability was examined over a one-week interval. Overall, the GSQ demonstrates good validity and reliability, and has potential for both research and pedagogical application.     

Reading aloud in Lewisham: an exploration of adult reading‐aloud practices

This paper analyses initial findings of a qualitative pilot study of the reading‐aloud practices of 17 adults in the London Borough of Lewisham. Although the dominant contemporary image of reading is that of a silent activity and within literacy provision it is frequently assumed that reading aloud is not a ‘natural’ ‘real life’ adult practice, anecdote suggests that adults do indeed read aloud, but these practices are overwhelmingly undocumented. This study is the first stage in developing a better understanding of contemporary adult reading‐aloud practices. Semi‐structured interviews were used to ask adults whether, what, where, how and why they read aloud. Initial findings reveal the ubiquitous nature of reading aloud in adult life, across a range of life domains (spiritual life, family life, work and learning) and for different self‐selected purposes (to memorise, to understand, to write and for fellowship). Initial findings reinforce the importance of expanding our definitions and conceptualisations of reading to recognise the diversity and changing nature of real life practices, and suggest implications for our understanding of the role of reading in adult life, for literacy education and for future research.     

Purpose Among Youth From Low-Income Backgrounds: A Mixed Methods Investigation

Theoretical and empirical research lead to conflicting perspectives on whether youth from low-income backgrounds are likely to have access to lives of purpose. To explore this issue, this study used data collected during the 2016–2017 academic year from a sample of Southern California youth. Findings suggest (a) youth from low-income communities are as likely as youth from middle-income communities to report leading lives of purpose; (b) purpose among low-income youth is associated with many of the same indicators of positive development as it is among middle-income youth; and (c) youth from low-income backgrounds encounter personal hardships that, in the presence of familial support and other developmental assets, can inspire purpose. Implications for purpose-fostering interventions among low-income youth are discussed.     

Collective team behaviour of Australian Rules football during phases of match play

Using the spatiotemporal characteristics of players, the primary aim of this study was to determine whether differences in collective team behaviour exist in Australian Rules football during different phases of match play. The secondary aim was to determine the extent to which collective team behaviour differed between competing teams and match half. Data was collected via 10 Hz global positioning system devices from a professional club during a 2 × 20 min, 15-v-15-match simulation drill. Five spatiotemporal variables from each team (x centroid, y centroid, length, width, and surface area) were collected and analysed during offensive, defensive, and contested phases. A multivariate analysis of variance comparing phase of match play (offensive, defensive, contested), Team (A & B), and Half (1 & 2) revealed that x-axis centroid and y-axis centroid showed considerable variation during all phases of match play. Length, width, and surface area were typically greater during the offensive phase comparative to defensive and contested phases. Clear differences were observed between teams with large differences recorded for length, width, and surface area during all phases of match play. Spatiotemporal variables that describe collective team behaviour may be used to understand team tactics and styles of play.     

The influence of match phase and field position on collective team behaviour in Australian Rules football

This study investigated the influence of match phase and field position on collective team behaviour in Australian Rules football (AF). Data from professional male athletes (years 24.4 ± 3.7; cm 185.9 ± 7.1; kg 85.4 ± 7.1), were collected via 10 Hz global positioning system (GPS) during a competitive AFL match. Five spatiotemporal metrics (x-axis centroid, y–axis centroid, length, width, and surface area), occupancy maps, and Shannon Entropy (ShannEn) were analysed by match phase (offensive, defensive, and contested) and field position (defensive 50, defensive midfield, forward midfield, and forward 50). A multivariate analysis of variance (MANOVA) revealed that field position had a greater influence on the x-axis centroid comparative to match phase. Conversely, match phase had a greater influence on length, width, and surface area comparative to field position. Occupancy maps revealed that players repositioned behind centre when the ball was in their defensive half and moved forward of centre when the ball was in their forward half. Shannon Entropy revealed that player movement was more variable during offence and defence (ShannEn = 0.82–0.93) compared to contest (ShannEn = 0.68–0.79). Spatiotemporal metrics, occupancy maps, and Shannon Entropy may assist in understanding the game style of AF teams.     

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

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.     

Post-War Cinema-Going and Working-Class Communities: A Case Study of the Holyland,Belfast, 1945–1962

This article utilizes oral history testimony to investigate cinema-going practices in the Holyland, a largely Protestant working-class community in post-war Belfast. It investigates the place-specific nature of cinema attendance, assesses the social practices of cinema-going and examines the reasons for the post-war decline in attendance and consequent cinema closures. Oral history testimony demonstrates the close link between the nature of cinema attendance, changes in the life cycle and urban mobility. By linking the recollections of post-war cinema-goers to broader social and economic developments in Belfast, and assessing Northern Ireland's relationship to the rest of the United Kingdom, this article investigates the reasons for the closure of the Apollo, the local neighbourhood cinema for residents of the Holyland.