Bioimpedance patterns and bioelectrical impedance vector analysis (BIVA) of road cyclists     

Andrea Giorgi  Maurizio Vicini  Luca Pollastri  Erica Lombardi  Emilio Magni  Andrea Andreazzoli 《Journal of sports sciences》2018,36(22):2608-2613

Bioelectrical impedance vector-analysis (BIVA) describes cell-mass, cell function and hydration status of an individual or a group. The goal of the present investigation was to provide bioelectrical impedance data for 525 male road cyclists (155 professionals, 79 elite, 59 elite-youth, and 232 amateurs) at the time of their optimal performance level. Data were plotted on the resistance-reactance (R-Xc) graph to characterize cyclists group vectors using BIVA. Compared to the general male population, the mean vector position of the road cyclists indicates a higher body cell mass (BCM) and phase angle (p<0.001). The vector position of the high-performance, compared to the amateur cyclists showed similar patterns with higher BCM and phase angles and higher reactance values for the high-performance athletes (p<0.001). The bio-impedance data were used to calculate the 50%, 75%, and 95% tolerance ellipses of each group of cyclists. The characteristic vector positions of the road cyclists indicate normal hydration and greater muscle mass and function of the high-performance cyclists compared to amateur cyclists and the normal population. The cyclists specific tolerance ellipses, particularly the high-performance cyclists might be used for classifying a cyclist according to the individual vector position and to define target vector regions for lower level cyclists.  相似文献   

Designing Diana: Female Sports Entrepreneurs and Equestrian Innovation     

Erica Munkwitz 《国际体育史杂志》2018,35(7-8):745-766

Abstract

Throughout the late nineteenth century, many women turned their talents to improving horse sports as authors, equipment inventors, clothing designers, and trainers. Although these were male-dominated domains, many women quickly realized that there was a demand for their expertise and innovation as men did not ride side-saddle nor understand it. Thus, women became writers of sporting manuals (non-fiction) and sporting novels (fiction), which aided other women in improving and understanding riding and hunting. They also made significant innovations in equipment construction, such as saddles and stirrups, and clothing design, in fashioning specialized sporting garments. Finally, they also became riding instructors, training other women to ride and hunt well. Though some women forged ahead for their own benefit, seeking profit out of writing or teaching, there were also many other women who pursued new ideas to improve horse sports as a whole and encourage greater, safer, and better participation for other women. In these ways, female equestrians consciously acted as sporting entrepreneurs and are significant but underappreciated agents of change not only for equestrianism but for larger social, sartorial, and sporting transformations.  相似文献   

Towards a research training curriculum: What, Why, How, Who?   总被引：3，自引：0，他引：3  

Erica McWilliam  Parlo Singh 《The Australian Educational Researcher》2002,29(3):3-18

Our purpose in this paper is to investigate the ways in which the work of research higher degree supervision is being reshaped from within and outside universities. Our interest is in the means by which new ‘content’ and ‘process’ knowledge — and thus a new set of pedagogical tasks and relationships — are being configured in the field of higher degree research. The outcomes of research training have traditionally been products of a one-on-one supervisory relationship, that is, academic apprentice-to-disciplinary mentor. This is especially the case in the fields of arts/humanities. Any ‘curriculum’ necessary to such a model has been both implicit and at the discretion of the disciplinary ‘master’.  相似文献   

Teachers’ journeys towards critical use of ICT     

Renato Schibeci  Judith MacCallum  Wendy Cumming‐Potvin  Cal Durrant  Barry Kissane  Erica‐Jane Miller 《Learning, Media and Technology》2008,33(4):313-327

Teachers have a central role in developing new learning models in schools. This paper describes a study that explored teachers’ confidence and competence in using Information and Communication Technologies (ICT) as they participated in an ICT development project conducted by an Australian education system in 12 primary schools. The project aimed to develop ICT integrated teaching practices by providing in‐class equipment and teacher professional development in ICT use, curriculum development and teaching strategies. The study used qualitative data from teacher records of Professional Development and Action Learning to identify three of four stages proposed to describe teachers’ ICT learning. Teachers moved from gaining basic ICT skills, to conducting ICT‐focused lessons and eventually appropriate ICT integration. Teachers who progressed to the third stage were able to exploit additional learning opportunities and begin to make fundamental changes to their pedagogy, but needed more time to reach the final stage of challenging existing pedagogical structures.  相似文献   

Integrating Genomics Research throughout the Undergraduate Curriculum: A Collection of Inquiry-Based Genomics Lab Modules     

LM Banta  EJ Crespi  RH Nehm  JA Schwarz  S Singer  CA Manduca  EC Bush  E Collins  CM Constance  D Dean  D Esteban  S Fox  J McDaris  CA Paul  G Quinan  KM Raley-Susman  ML Smith  CS Wallace  GS Withers  L Caporale 《CBE life sciences education》2012,11(3):203-208

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Buying-out teaching for research: the views of academics and their managers     

Erica?SmithEmail author  Andrew?Smith 《Higher Education》2012,63(4):455-472

This paper reports on the practice of buying-out teaching to create time for research. A study was carried out, at a regional university in Australia, with academics in receipt of research grant funds (and therefore with the means to buy out teaching), Heads of School, and the Deputy Vice Chancellors responsible respectively for research and for academic matters. We found that while eligible academics did buy out teaching by employing casual staff, most of them worried about the potential effects on teaching quality and students’ learning. Heads of School were more sanguine about possible effects on teaching. Decision making by academics about whether to buy out teaching, and by Heads of School about whether to allow it in particular cases, took account of a number of factors. Some teaching activities were seen as higher-risk than others for buying-out. It was uniformly recognised by all parties that buying-out did not result in complete relief from the teaching activity that was bought out; a great deal of time and energy needed to be invested by the academic in making appropriate arrangements and monitoring the quality of work undertaken by the casual staff. The paper suggests that clearer policies need to be instituted in this area; academics were unsure what buying-out was allowed or acceptable, and would benefit from more discussion of the practice.  相似文献   

Redefining Information Literacy to Prepare Students for the 21st Century Workforce     

Robert Monge  Erica Frisicaro-Pawlowski 《Innovative Higher Education》2014,39(1):59-73

Information literacy instruction–a set of skills taught in order to identify and find the information needed to solve a problem—traditionally follows a formalized academic model. It assumes information skills can be applied universally and learned individually. However, this approach does not correspond to the social and specialized learning practices in the workforce. This article presents an argument for faculty and librarians to collaborate and redefine information literacy guidelines using specific disciplinary requirements while incorporating non-formal and informal workplace learning practices. This approach would better prepare students for the social and collaborative learning required in a 21st century workforce environment.  相似文献   

Examining teachers’ language in Head Start classrooms from a Systemic Linguistics Approach   总被引：1，自引：0，他引：1  

David K. Dickinson  Kerry G. Hofer  Erica M. Barnes  Jill F. Grifenhagen 《Early childhood research quarterly》2014

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The Relation Between Media Content Evaluations and Political Disaffection     

Erica Weintraub Austin  Bruce E. Pinkleton 《Mass Communication and Society》2013,16(3-4):105-122

A probability sample of 592 Washington state voters during the month prior to the 1996presidential election was used to assess registered voters 'levels of involvement, confidence in the media's representations of reality, and political disaffection. Perceptions of incompleteness were associated with amplified feelings of cynicism. Perceptions of oversimplification were associated with increased negativism but were also associated with increased involvement. The results suggest that perceptions of oversimplification in the news contribute less to public disaffection than perceptions of unrepresentativeness. We argue that some skepticism of the news should be considered healthy rather than worrisome.  相似文献   

Images of Injury: Graphic News Visuals’ Effects on Attitudes toward the Use of Unmanned Drones     

Erica Scharrer  Greg Blackburn 《Mass Communication and Society》2013,16(6):799-820

In this study, sanitized coverage of the United States’ use of military drone strikes in foreign countries is pitted against more graphic news images in an experimental setting to determine effects on attitudes toward the use of U.S. military drones. In addition, multiple news exposures are tested to determine whether individuals can become emotionally inured to such coverage, even when images are more graphic. Key results find those who viewed graphic news visuals did not show evidence of desensitization after repeated viewing and expressed higher levels of concern regarding drone use but not reduced support for U.S. drone policy.  相似文献