Comparison of two Actigraph models for assessing free-living physical activity in Indian adolescents

This aim of this study was to compare the new Actigraph (GT1M) with the widely used Model 7164. Seven days of free-living physical activity were measured simultaneously using both the Model 7164 and GT1M in 30 Indian adolescents (mean age 15.8 years, s = 0.6). The GT1M was on average 9% lower per epoch than model 7164, thus a correction factor of 0.91 is suggested for comparison between the two monitors. The differences between monitors increased in magnitude with intensity of activity (P < 0.001) but remained randomly distributed (r = 0.01, P = 0.96). No significant difference was observed between monitors for time spent in moderate (P = 0.31) and vigorous (P = 0.34) physical activity when using the same epoch length. The Model 7164 classified less time as sedentary (P < 0.001) and more time as light-intensity activity (P < 0.001) than the GT1M. In conclusion, data from the GT1M can be compared with historical data using average counts per minute with a correction factor, and the two models might be comparable for assessing time spent in moderate to vigorous physical activity in children when using the same epoch length.     

Hot and Cool Self-Regulation,Academic Competence,and Maladjustment: Mediating and Differential Relations

This study examined differential and mediating relations between hot and cool self-regulation (M_age = 48.2 months; N = 1,155, 48% girls), first-grade (M_age = 77.5 months) maladjustment (externalizing [EXT] and internalizing [INT] behavior), and first- and second-grade (M_age = 89.5 months) academic competence (AC). Using teacher reported EXT, INT, and AC, partial support for the differential perspective was found in that only hot self-regulation was significantly related to EXT, whereas both hot and cool self-regulation was significantly related to AC. Moreover, hot self-regulation indirectly predicted second-grade AC through first-grade EXT, lending some support for the mediating perspective also. The findings contribute to an understanding of how self-regulation is related to academic and behavioral school adjustment.     

Energy turnover during 24 hours and 6 days of adventure racing

Abstract

Energy turnover was assessed in two conditions of mixed ultra-endurance exercise. In Study 1, energy expenditure and intake were measured in nine males in a laboratory over 24 h. In Study 2, energy expenditure was assessed in six males during an 800-km Adventure race (mean race time 152.5 h). Individual correlations between heart rate and oxygen uptake ([Vdot]O₂) were established during pre-tests when kayaking, cycling, and running. During exercise, energy expenditure was estimated from continuous heart rate recordings. Heart rate and [Vdot]O₂ were measured regularly during fixed cycling work rates to correct energy expenditure for drift in oxygen pulse. Mean energy expenditure was 18,050 ± 2,390 kcal (750 ± 100 kcal · h^?1) and 80,000 ± 18,000 kcal (500 ± 100 kcal · h^?1) in Study 1 and Study 2 respectively, which is higher than previously reported. Energy intake in Study 1 was 8,450 ± 1,160 kcal, resulting in an energy deficit of 9,590 ± 770 kcal. Body mass decreased in Study 1 (?2.3 ± 0.8 kg) but was unchanged in Study 2. Fat mass decreased in Study 2 (?2.3 ± 1.5 kg). In Study 1, muscle glycogen content decreased by only 60%. Adventure racing requires a high energy expenditure, with large inter-individual variation. A large energy deficit is caused by inadequate energy intake, possibly due to suppressed appetite and gastrointestinal problems. The oxygen pulse, comparing start to 12 h of exercise and beyond, increased by 10% and 5% in Study 1 and Study 2 respectively. Hence, estimations of energy expenditure from heart rate recordings should be corrected according to this drift.     

Curriculum stasis: the disconnect between music and technology in the Australian curriculum

Technology is a dominant mediating factor impacting on current human behaviour and social change, which both acts on and is acted upon by other phenomena. This changing social landscape, along with new expectations and requirements, drives our educational priorities and curriculum agenda. There is no denying the prevalence of technology found in the statements and guidelines of the national Australian Curriculum. Further, the National Review of School Music Education identified the importance of technology in school music education in 2005. The curriculum guidelines illustrate an understanding of technology in Music and the Arts that is both vague and limiting. In 2015 we are at a point of curriculum stasis, an equilibrium that highlights a disconnect between music, technology and Australian music education. This article investigates current secondary school Years 7–10 (ages 11–15 years) Music and Arts curriculum statements concerning the use of technology and compares this to the general capability information and computer technology (ICT) curricula. There is wide recognition that digital technology is essential in teaching and learning, but this is not reflected in contemporary Australian Arts and Music curricula.     

鄂西土家族五句子情歌的民族文化特征

鄂西土家族民歌丰富多彩,其间积淀着丰厚的土家民族文化精髓。在形式多样的民歌当中,五句子情歌以其格调的特别、结构的独特和内容的丰富而成为鄂西土家族民歌中最为发达的样式。从五句子情歌的地理属性、文化内涵、结构形式和文化功能等角度,可以探寻五句子情歌所体现的土家族民族文化特征。     

陆地卫星MSS影象目视解译在土地资源调查中局限性的讨论

简述陆地卫星多光谱扫描(MSS)影象的特点,着重介绍陆地卫星多光谱扫描影象适用于中、小比例尺的土地资源凋查     

经管类专业人才培养体系的转型与重构——以池州学院合作教育为例

依托多种资源,开展产学合作教育是应用型本科高校培养创新人才的重要途径。文章从合作教育视角探讨了池州学院经管类专业"面向市场,服务地方,合作办学,特色发展"的办学思路及经管类专业合作教育培养人才的资源整合问题;构建了经管类专业合作教育的人才培养目标及以能力为平台的课程教学体系;基于地方智库、产学合作平台建设、职业技能培养三类合作教育模式,探索总结池州学院经管类专业应用型创新人才培养的途径和方法。     

Spelling instruction in Spanish: a comparison of self‐correction,visual imagery and copying

Two randomised control experiments examined spelling outcomes in a repeated measures design (pre‐test, post‐tests; 1‐day, 1‐month follow‐up, 5‐month follow‐up), where students learned Spanish irregular words through (1) immediate feedback using self‐correction, (2) visual imagery where children imagine and represent words using movement, and (3) copying words. The two control groups engaged in reading and dictation. We expected that methods with kinesthetic components and segmentation of stimuli would yield better orthographic representations in memory. Results showed that orthographic errors on Spanish irregular words diminish when children receive self‐correction instruction. Imagery and copy instruction also reduce these errors, but less consistently. Five months later, self‐correction group maintained their advantage in spelling compared with students who read or performed dictation. Experiment 2 replicated the spelling instruction effects and showed large effects on children who had hardly received any spelling instruction in Spanish. Results indicate that research‐based practices can significantly improve spelling outcomes in primary children.