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131.
Propulsion, one of the most important factors in front crawl swimming performance, is generated from both the upper and lower limbs, yet little is known about the mechanisms of propulsion from the alternating movements of the lower limbs in the flutter kick (FK). The purpose of this systematic review was to review the literature relating to the mechanisms of propulsion from FK in front crawl. There was limited information about the mechanisms of propulsion in FK. Since movements of the lower limbs are similar between FK and the dolphin kick (DK), mechanisms of propulsion from DK were reviewed to better understand propulsion from FK. Recent evidence suggests that propulsion in DK is generated in conjunction with formation and shedding of vortices. Similar vortex structures have been observed in FK. Visualisation and simulation techniques, such as particle image velocimetry (PIV) and computational fluid dynamics (CFD), are non-invasive tools that can effectively model water flow without impacting swimming technique. These technologies allow researchers to estimate the acceleration of water and, consequently, the propulsive reaction forces acting on the swimmer. Future research should use these technologies to investigate propulsion from FK.  相似文献   
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This paper offers an emerging interpretive framework for understanding the active role instructional designers play in the transformation of learning systems in higher education. A 3-year study of instructional designers in Canadian universities revealed how, through reflexive critical practice, designers are active, moral, political, and influential in activating change at interpersonal, professional, institutional and societal levels. Through narrative inquiry the voices of designers reflect the scope of agency, community and relational practice in which they regularly engage with faculty in institutions of higher learning.
Richard F. KennyEmail:

Katy Campbell   is a professor and Dean in the Faculty of Extension, University of Alberta, Edmonton, AB, Canada. Richard A. Schwier   is a professor of Educational Communications and Technology in the College of Education, University of Saskatchewan, Saskatoon, SK, Canada. Richard F. Kenny   is an associate professor, Centre for Distance Education, Athabasca University, Athabasca, AB, Canada.  相似文献   
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Research self-efficacy, imposter phenomenon, and scholarly productivity were explored among a sample of 247 counselor educators. In most cases, feeling like an imposter hindered scholarly productivity; however, the interaction of a moderate to frequent amount of imposter feelings with high research self-efficacy increased scholarly productivity.  相似文献   
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Young people's wellbeing is often lowest where they assume a relatively low position within their school's socioeconomic hierarchy, for example, among poorer children attending more affluent schools. Transition to secondary school is a period during which young people typically enter an environment which is more socioeconomically diverse than their primary school. Young people joining a school with a higher socioeconomic status intake relative to their primary school may assume a relatively lowered position within their school’s socioeconomic hierarchy, experiencing a detriment to their wellbeing as a consequence. This article draws on data from 45,055 pupils in Years 7 and 8, from 193 secondary schools in Wales, who completed the 2017 Student Health Research Network (SHRN) Student Health and Wellbeing (SHW) survey. Pupils reported which primary school they previously attended, and survey data on wellbeing were linked to publicly available data on the free school meal entitlement of schools attended. In cross-classified linear mixed-effects models, with primary and secondary school as levels, mental wellbeing varied significantly according to both primary and secondary school attended. A higher school-level deprivation was associated with worse mental wellbeing in both cases. Mental wellbeing was significantly predicted by the relative affluence of a child's primary and secondary school, with movement to a secondary school of higher overall socioeconomic status associated with lowered wellbeing. These findings highlight transition to secondary school as a key point in which socioeconomic inequality in wellbeing may widen, and thus as an important focal point for intervention to reduce health inequalities.  相似文献   
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The benefits of transdisciplinary collaboration for addressing complex health problems are widely accepted; however, acknowledging the bumps and twists along the road that are inherent in those collaborations is often considered taboo. Academic norms that prevent open discussion of these challenges can have counter-productive results. This essay describes the major education efforts, milestones, and footfalls in the development of an effective partnership between communication-trained researchers in a College of Journalism and Communications and medical researchers in a College of Medicine. We hope it can serve as “best practice” for understanding the value of team science and interdisciplinary research collaborations.  相似文献   
137.
Family involvement in education, including the quality of family–school communication, has been demonstrated repeatedly to have a substantial effect on child development and success in school; however, measures of this construct are limited. The purpose this study was to examine the factor structure and concurrent validity of the Quality of the Parent–Teacher Relationship, a subscale of the Parent–Teacher Involvement Questionnaire, in a sample of children with attention deficit hyperactivity disorder (ADHD). Participants were 260 parents and teachers of children diagnosed with ADHD in Grades kindergarten to 6. Results provided support for a two‐factor model, consisting of separate factors for parents and teachers, and correlational findings provided support for concurrent validity. This measure appears to have utility in assessing parent–teacher relationships and evaluating the effectiveness of family–school interventions.  相似文献   
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