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51.
Abstract

In a writing life that spanned the 1910 to 1970s, J.B. Priestley engaged with a variety of subjects, across various literary forms, ranging from politics, popular culture and Englishness through to theories of time. However it has rarely been noted that he also wrote passionately and knowledgeably about music, with the latter playing an important role in key novels, plays and nonfiction. Priestley also promoted chamber festivals, wrote the libretto for an opera ‘The Olympians’, and even occasionally performed himself. Priestley’s writings on music fitted into his concerns about the rise of an Americanized mass order, and his mistrust of commericalized musical forms was shared by other critics of the time. However, Priestley’s work is more significant than a binary high/low low cultural validation of classical music/dismissal of more popular musical forms. He was often critical of jazz and ragtime, but more positive about popular music that was produced in, reflected, and empowered the individual and community. Priestley’s writings on music marked a genuine attempt at understanding the role of music in culture, and contributed to his democratic critique of the mass society.  相似文献   
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The purpose of this study was to assess the validity of predicting the maximal oxygen uptake (VO2(max)) of sedentary men from sub-maximal VO2 values obtained during a perceptually regulated exercise test. Thirteen healthy, sedentary males aged 29-52 years completed five graded exercise tests on a cycle ergometer. The first and fifth test involved a graded exercise test to determine VO2(max). The two maximal graded exercise tests were separated by three sub-maximal graded exercise tests, perceptually regulated at 3-min RPE intensities of 9, 11, 13, 15, and 17 on the Borg ratings of perceived exertion (RPE) scale, in that order. After confirmation that individual linear regression models provided the most appropriate fit to the data, the regression lines for the perceptual ranges 9-17, 9-15, and 11-17 were extrapolated to RPE 20 to predict VO2(max). There were no significant differences between VO2(max) values from the graded exercise tests (mean 43.9 ml x kg(-1) x min(-1), s = 6.3) and predicted VO2(max) values for the perceptual ranges 9-17 (40.7 ml x kg(-1) x min(-1), s = 2.2) and RPE 11-17 (42.5 ml x kg(-1) x min(-1), s = 2.3) across the three trials. The predicted VO2(max) from the perceptual range 9-15 was significantly lower (P < 0.05) (37.7 ml x kg(-1) x min(-1), s = 2.3). The intra-class correlation coefficients between actual and predicted VO2(max) for RPE 9-17 and RPE 11-17 across trials ranged from 0.80 to 0.87. Limits of agreement analysis on actual and predicted VO2 values (bias +/- 1.96 x S(diff)) were 3.4 ml x kg(-1) x min(-1) (+/- 10.7), 2.4 ml x kg(-1) x min(-1) (+/- 9.9), and 3.7 ml x kg(-1) x min(-1) (+/- 12.8) (trials 1, 2, and 3, respectively) of RPE range 9-17. Results suggest that a sub-maximal, perceptually guided graded exercise test provides acceptable estimates of VO2(max) in young to middle-aged sedentary males.  相似文献   
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This article gives an account of how and why the term 'value added' has come to be used in an educational context, focusing on the early years of that usage in the UK. It discusses the fact that the term value added has developed, has been understood and defined in diverse and sometimes conflicting ways; and identifies what are called 'functional ambiguities' in the term; that is to say, ambiguities which cannot be altogether eliminated because they are necessary to how the term is made to function. Nonetheless, some criteria emerge in the course of the article for making evaluative judgements of what should and should not count as meaningful definitions of value added.  相似文献   
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