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Christian Heyde Hubert Mahler Kai Roecker Albert Gollhofer 《Journal of sports sciences》2016,34(9):787-793
The aim of this study was to evaluate the predictive potential provided by two ventilatory inflection points (VIP1 and VIP2) examined in field without using gas analysis systems and uncomfortable facemasks. A calibrated respiratory inductance plethysmograph (RIP) and a computerised routine were utilised, respectively, to derive ventilation and to detect VIP1 and VIP2 during a standardised field ramp test on a 400 m running track on 81 participants. In addition, average running speed of a competitive 1000 m run (S1k) was observed as criterion. The predictive value of running speed at VIP1 (SVIP1) and the speed range between VIP1 and VIP2 in relation to VIP2 (VIPSPAN) was analysed via regression analysis. VIPSPAN rather than running speed at VIP2 (SVIP2) was operationalised as a predictor to consider the covariance between SVIP1 and SVIP2. SVIP1 and VIPSPAN, respectively, provided 58.9% and 22.9% of explained variance in regard to S1k. Considering covariance, the timing of two ventilatory inflection points provides predictive value in regard to a competitive 1000 m run. This is the first study to apply computerised detection of ventilatory inflection points in a field setting independent on measurements of the respiratory gas exchange and without using any facemasks. 相似文献
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Sophia Rodriguez 《The Urban Review》2017,49(4):529-550
This article documents minority youth sense-making around the concept of diversity and the founding of a youth activist group that seeks spaces for policy thinking and protesting against racial inequalities in selective enrollment schools. Utilizing the sociological theory of racial formation and the concept of racial projects (Omi and Winant in Racial formation in the United States, 3rd edn, Routledge, New York, 2014), this article draws on data from a critical ethnography. The author argues that youth activists offer a critical perspective for researchers and policy-makers in the face of neoliberal school choice policy. Findings reveal that youth activists understand a lack of diversity as racial imbalance in high status schools, and that they expose structural inequalities that are embedded in policy structures and processes such as selective enrollment high schools. Implications are discussed to show how re-conceptualizing policy as a racial formation can bring structural and institutional racist practices into view in hopes of transforming district policies to offer access to high quality schools for all students. 相似文献
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全球化是否有助于教育公平? 总被引:3,自引:0,他引:3
自20世纪末迄今,全球化在资本主义沃土的滋润下,已经蔚为世界的潮流。全球化一方面有现代性的特质,另一方面,也呈现后现代思潮的特征。教育在此全球化的不同样貌中,必须认清现代与后现代思潮的利弊得失,并批判地融合两者,方能确保教育公平和社会正义。从现代和后现代思维,厘清与批判全球化的趋势和内涵,并透过分析、诠释与批判方法,为教育在全球化趋势下,找到一条有助于促进教育迈向公平和正义的方向。 相似文献
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Jessica M. Faupel-Badger Kimberley Raue David E. Nelson Sophia Tsakraklides 《CBE life sciences education》2015,14(1)
Published evaluations of career preparation of alumni from long-standing postdoctoral fellowship programs in the biomedical sciences are limited and often focus on quantitative analysis of data from extant publicly available sources. Qualitative methods provide the opportunity to gather robust information about specific program elements from structured postdoctoral training programs and the influence of this training on subsequent career paths of alumni. In-depth interviews with a subset of the National Cancer Institute’s Cancer Prevention Fellowship Program (CPFP) alumni (n = 27), representing more than 25 years of the program’s history and multiple career sectors, were conducted to assess alumni reflections on the training environment and career preparation during their time in the CPFP. NVivo software was used to analyze data and identify major themes. Four main themes emerged from these interviews, including: the value of structured training curriculum, mentorship, transdisciplinary environment, and professional identity. Even when reflecting on training that occurred one to two decades earlier, alumni were able to highlight specific components of a structured postdoctoral training program as influencing their research and career trajectories. These results may have relevance for those interested in assessing how postdoctoral training can influence fellows throughout their careers and understanding salient features of structured programs. 相似文献
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This study examines whether or not attention to campaign newsinfluences political trust. It also explores whether politicaltrust predicts attention to campaign news, and whether the mechanismof influence between attention to campaign news and politicaltrust differs across educational levels. Political trust wasoperationalized as trust in government. The 1992 American NationalElection Survey data were used. Results of two-stage least squaresanalysis show that attention to television campaign coveragereduced trust in government, while a low level of trust in governmentincreased attention to newspaper campaign coverage. More importantly,the mechanism of influence between political trust and attentionto campaign coverage differed across educational levels. Amongthe less educated, attention to campaign coverage on televisionled to lower levels of trust. Among the more educated, a lowlevel of trust in government increased attention to campaigncoverage. The findings also indicate that the types of media(television vs. newspapers) matter when it comes to media effectson political trust, Implications of findings on the relationshipsbetween the concepts of political trust, vigilant skepticism,education, and media use are discussed. 相似文献
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