Does modality matter? A latent profile and transition analysis of sedentary behaviours among school-aged youth: The UP&DOWN study     

David Sánchez-Oliva  Rebecca M. Leech  Alberto Grao-Cruces  Irene Esteban-Cornejo  Carmen Padilla-Moledo  Oscar L. Veiga 《Journal of sports sciences》2020,38(9):1062-1069

ABSTRACT

The aims of this study were to identify profiles of sedentary behaviour (SB) patterns, based on leisure-time self-reported SB modalities (screen, educative, social, and relaxing) and to evaluate changes in these profiles over 2 years among Spanish youth aged 8–18 years. Latent profile analysis (LPA), a data-driven analytic approach, was used to identify groups of boys and girls (n = 1553; 48% girls; mean±SD age: 12.56 ± 2.49 y) with distinct SB profiles using the SB modalities (time/d) as input variables. Latent transition analysis, an extension of LPA that uses longitudinal data, was used to analyse 2-year changes in these profiles. At baseline, four and three SB profiles were found among boys (labelled: screen, educative, social, and relaxing) and girls (labelled: screen/social, educative, and relaxing), respectively. Overall, more girls (range: 48%-67%) had the same profile over time, than boys (40%-52%). Participants with a screen or relaxing SB profile at baseline were more likely to have an educative profile after 2 years. Youth with a social and an educative SB profile at baseline were more likely to transition to profiles characterized by higher screen and social SB, respectively. Using a novel and person-centered approach, this study identified gender-specific SB profiles that were moderately stable over time.  相似文献   

“I Didn't Do Nothin'”: The Discursive Construction of School Suspension   总被引：1，自引：0，他引：1  

Vavrus  Frances  Cole  KimMarie 《The Urban Review》2002,34(2):87-111

This article examines the issue of school suspension by looking at the sociocultural factors that influence a teacher's decision to remove a student from the classroom. The authors use ethnographic and discourse analytic approaches to study how disciplinary moments are constructed by teachers and students in an urban high school in the Midwest. The analysis of classroom observations, videotaped lessons, and interviews from a longitudinal study at this multiethnic high school shows that suspensions frequently occur in the absence of any physical violence or blatant verbal abuse. Rather, suspensions are often preceded by a complex series of nonviolent events when one disruptive act among many is singled out for action by the teacher. This study has implications for current debates about zero-tolerance policies that disproportionately affect students of color for their misbehavior in school. Our analysis suggests that removing a student from class is a highly contextualized decision based on subtle race and gender relations that cannot be adequately addressed in school discipline policies.  相似文献   

Recipes for fun     

Ann Cole  Carolyn Haas  Elizabeth Heller  Betty Weinberger 《Early Childhood Education Journal》1975,2(4):39-42

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Resisting Erasure and Developing Networks of Solidarity: Testimonios of Two Puerto Rican Scholars in the Academy     

Carmen M. Martínez-Roldán  Sandra Quiñones 《Journal of Language, Identity & Education》2016,15(3):151-164

In this article, we share findings from a critical qualitative study aimed at better understanding the ways that language, history, and geography mediate our work and identities as educational researchers. As scholars whose particular sociocultural and political histories are often absent in scholarly discussions about language and education, we use the intergenerational sharing of testimonios as both methodology and narrative development to gain a deeper understanding of experiences involving the learning and use of English that influence our academic careers. We theorize our experiences as resisting erasure and contribute to Latina epistemology scholarship and critical educational research about Puerto Ricans in the United States. Moreover, we forward the concept of funds of knowledge as a professional practice. Telling our stories and developing mentoring networks is necessary for our individual and collective functioning and well-being as scholars; it cultivates solidarity as a means of thriving in the academy.  相似文献   

Output feedback stabilization for symmetric control systems     

Carmen Coll  Néstor Thome 《Journal of The Franklin Institute》2005,342(7):814-823

This work is devoted to the study of symmetric control systems. It establishes a relation between internal symmetry and external one for a linear invariant control system having n real simple poles. The symmetric stabilization problem is studied using a symmetric feedback gain such that the output control stabilizes the closed-loop system. A necessary and sufficient condition is given to solve this stabilization problem for a symmetric control system (A,B,C) and a generalized symmetric control system (E,A,B,C).  相似文献   

默顿对科学社会学的贡献   总被引：2，自引：0，他引：2  

斯蒂芬·科尔 《科学文化评论》2005,2(3):41-55

这篇文章是关于默顿及其科学社会学工作的回忆与评论.作者自1960年起先后作过默顿的学生、助手和同事,前后达15年之久,可以说对默顿非常熟悉.文中主要讨论了默顿关于清教与科学的博士论文、关于科学规范的论述、以及关于"马太效应"的文章.作者评论道,默顿一方面未能赋予其清教论题以更一般化的陈述,另一方面又未能对经验资料给予足够的关注,从而导致人们怀疑其马太效应理论的正确性.  相似文献   

A review of cognitive teaching models   总被引：3，自引：0，他引：3  

Brent Wilson  Peggy Cole 《Educational technology research and development : ETR & D》1991,39(4):47-64

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Revisiting the Collective in Critical Consciousness: Diverse Sociopolitical Wisdoms and Ontological Healing in Sociopolitical Development     

Sonia Abigail Sánchez Carmen  Michael Domínguez  Andrew Cory Greene  Elizabeth Mendoza  Michelle Fine  Helen A. Neville  Kris D. Gutiérrez 《The Urban Review》2015,47(5):824-846

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Suprasegmental Phonology Development and Reading Acquisition: A Longitudinal Study     

Nuria Calet  Nicolás Gutiérrez-Palma  Ian C. Simpson  M. Carmen González-Trujillo  Sylvia Defior 《Scientific Studies of Reading》2015,19(1):51-71

Previous studies implicate suprasegmental phonology in reading acquisition. However, little is known about how suprasegmental sensitivity develops or how it contributes to reading. Here, 130 Spanish primary-school children participated in this 2-year longitudinal study. Nonlinguistic rhythm, lexical-stress sensitivity and metrical-stress sensitivity, along with phonological awareness, vocabulary, nonverbal intelligence, and reading aloud, were assessed on five occasions. Results suggest that prosody abilities have different developmental trajectories and that prosody explains unique variance in reading beyond that explained by other factors. There was some evidence that the contribution of each prosody skill occurred at different phases in reading development. Nonlinguistic rhythm, lexical-stress sensitivity, and metrical-stress sensitivity assessed at the end of kindergarten, the start of Grade 1, and the end of Grade 1, respectively, predicted reading performance 6 months later. Nevertheless, sample size and reliability temper the conclusions that can be made. The implications of prosody skills for literacy development are discussed.  相似文献   

Signal Traffic: Critical Studies of Media Infrastructures     

Reviewed by Cole Stratton 《The Information Society》2017,33(1):50-51

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