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An affordance “refers to the fact that the physical properties of an object make possible different functions for the person perceiving or using that object” (Sellen and Harper in The myth of the paperless office. The MIT Press, Cambridge, 2002). Historically, authors, publishers and editors have preferred to check and mark up hard-copy page proofs because it has been easy and flexible to read, cross-reference and annotate. Ironically, changes to the physical properties of computer hardware, as well as improvements to software such as Adobe Acrobat, are eroding our nostalgic preference for paper mark-up and highlighting paper’s inherent limitations. This article compares the affordances of paper in regard to editorial mark-up with those of digital, and demonstrates how digital affordances have impacted positively on editors’ workflow within educational publishing’s highly pressured production process. Specifically, how authors are supplied with complete electronic copy from previous editions and how editors perform their paperless mark-up.  相似文献   
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Since their incorporation in 1993, further education (FE) colleges in England have been responsible for their own staffing and, faced with funding constraints as well as recruitment and retention targets, some have introduced a new category of staff referred to here as ‘learning support workers’ (LSWs). Though their employment conditions and specific duties vary considerably, LSWs' work often includes providing individual care for students. In this small‐scale study, using semi‐structured interviews, the perceptions of some teachers and LSWs about the nature of their relationships with each other and with students are investigated. The study is set broadly in the context of debates about the impact of public sector reform on FE colleges and teachers. A discourse analysis approach is adopted in discussion of the data. The authors conclude that although they are differently positioned in relation to traditional discourses of professionalism, both teachers and LSWs are perceived to be carrying out what Hochschild termed ‘emotional labour’. The contradictory nature of emotional labour is also highlighted. Some of the implications of employing a new group of workers in FE are discussed.  相似文献   
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Abstract

The aim of this study was to establish the net energy cost of dribbling a soccer ball. Eight male footballers ran for 5 min on a treadmill at speeds of 9, 10.5, 12 and 13.5km ·h –1 while dribbling a football against a rebound box; running at each of these speeds without the ball constituted controls. Oxygen uptake ([Vdot]O 2 ), perceived exertion (RPE) and blood lactate levels were measured and compared between the two conditions. The energy expended increased linearly with speed for both exercise modes, the mean increment of 1.24 kcal·min –1 caused by dribbling being independent of the speed of motion. Individual differences in efficiency of dribbling could not be explained by considering different patterns of stride characteristics. Similarly, RPE showed a constant elevation for dribbling over running at each speed, and a linear increase with speed of motion for both modes. Blood lactate increased disproportionately with speed for dribbling, onset of metabolic acidosis being attained at a lower speed for the experimental task. It was concluded that dribbling a ball does significantly increase the energy cost and perceived exertion of motion, as well as inducing disproportionate rises in blood lactate when performed at high speeds.  相似文献   
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Bern's gender schema theory (Bern 1981, 1983, 1993) provides a useful framework for examining the influence of women scientist role models on girls’ perceptions of science and scientists. The purpose of this paper is (1) to describe how Bern's gender schema theory serves as a framework for guiding future research, (2) to examine the fundamental premises of Bern's gender schema theory as they relate to the processing of information about science and gender roles, and (3) to identify key conditions and criteria from gender schema theory to guide the design of television programs that use role models to reduce gender‐stereotyping of science.  相似文献   
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Adults implicitly judge people from certain social backgrounds as more “American” than others. This study tests the development of children's reasoning about nationality and social categories. Children across cultures (White and Korean American children in the United States, Korean children in South Korea) judged the nationality of individuals varying in race and language. Across cultures, 5‐ to 6‐year‐old children (= 100) categorized English speakers as “American” and Korean speakers as “Korean” regardless of race, suggesting that young children prioritize language over race when thinking about nationality. Nine‐ and 10‐year‐olds (= 181) attended to language and race and their nationality judgments varied across cultures. These results suggest that associations between nationality and social category membership emerge early in life and are shaped by cultural context.  相似文献   
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ABSTRACT

The objective of this review was to systematically describe the traditional and contemporary data capture and analytic methods employed in performance analysis research in team invasion sports, evaluate the practicality of these methods, and formulate practical recommendations on methods for analysing tactics and strategies in team invasion sports. A systematic search of the databases SPORTDiscus, Web of Science, Scopus, MEDLINE and PubMed was performed. Keywords addressed performance analysis methods and team invasion sports, with all other disciplines of sports science excluded. A total of 537 articles were included in the review and six main themes of research identified. Themes included game actions, dynamic game actions, movement patterns, collective team behaviours, social network analysis and game styles. Performance analysis research has predominantly focused on identifying key performance indicators related to success by analysing differences in game actions between successful and less successful teams. However, these measures are outcome-focused and only provide limited insight into winning team’s strategy. Team invasion sports are now viewed as dynamic, complex systems with opposing teams as interacting parts. Strategies and tactics should be analysed using a holistic process-orientated approach by recording dynamic actions, collective team behaviours and passing networks, and viewing them in game styles.  相似文献   
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