Impact of age on haematological markers pre- and post-marathon running     

Thomas G. Martin  Rachel W. Pata  Johanna D’Addario  Lauren Yuknis  Rebecca Kingston  Richard Feinn 《Journal of sports sciences》2015,33(19):1988-1997

This study investigated whether haematological markers differ between young and masters marathon participants, running at similar performance levels. Nine young (31.89 ± 4.96 years) and eight masters (63.13 ± 4.61 years) runners participated. At five time points (pre-race through 54 h post-race), a complete blood cell count, basic metabolic panel and creatine kinase (CK) isoenzyme panel were assessed. Race performance was standardised using the World Masters Association Age Grading Performance Tables. Total CK levels were elevated for all participants at all time points post-race (P < 0.001). The CK-isoenzyme MB% was elevated across groups at 6, 30 and 54 h post-race (P < 0.01, P < 0.01 and P < 0.05), with masters runners having a higher CK-MB% at 30 and 54 h (P < 0.05, P < 0.05). Total white blood cell and neutrophil counts were elevated through 6 h post-race (P < 0.001), with higher levels found in younger runners (P < 0.001). When considering all blood work, masters runners had a higher number of abnormal values at 6, 30 and 54 h post-race (P < 0.05, P < 0.01 and P < 0.05). In conclusion, masters runners demonstrated sustained CK-MB elevation, which may suggest greater cardiac stress. However, future studies using additional cardiac markers should be completed to confirm these findings. In addition, masters runners showed an increased number of laboratory values outside normal range, indicating the body’s reduced capacity to respond to marathon running.  相似文献   

Destruction/reconstruction: preservation of archaeological and zoological research data     

Rebecca D. Frank  Elizabeth Yakel  Ixchel M. Faniel 《Archival Science》2015,15(2):141-167

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Effect of perceived ease of use on librarians' e-skills: Basis for library technology acceptance intention     

Roland Izuagbe  Nurudeen Ademola Ibrahim  Lilofa Osamienfa Ogiamien  Olajumoke Rebecca Olawoyin  Nwanne Mary Nwokeoma  Promise Ifeoma Ilo  Odaro Osayande 《Library & information science research》2019,41(3):100969

Despite the widespread application of technology in the 21st century, making informed decisions regarding its acceptance in organisations is a function of several factors, particularly in developing countries, due to factors such as rising cost of the information technology infrastructure and low technological exposure. A model that incorporated perceived ease of use (PEOU) and e-Skills to examine librarians' intention for actual library technology acceptance was tested. The correlational research design, along with a multistage sampling procedure, was applied to select samples to reduce the sample to a manageable proportion. Professional librarians and library officers in four university libraries provided the data for the study. Results showed that e-Skill is the model's strongest determinant of technology acceptance intention among librarians. Also, PEOU will significantly moderate librarians' intention towards library technology acceptance when e-Skills are insufficient. From these outcomes, the understanding of the determinants of behavioural intention captured in the Technology Acceptance Model (TAM) and the Unified Theory of Acceptance and Use of Technology (UTAT) is extended and refined.  相似文献   

Playing it down/playing it up: girls’ strategic negotiations of academic success     

Rebecca Raby  Shauna Pomerantz 《British Journal of Sociology of Education》2015,36(4):507-525

Through the lens of post-structural agency, this article focuses on how self-identified smart girls strategically negotiate their academic identities within the gendered terrain of the school. Based on interviews with 51 smart high school girls in Canada, our analysis complicates current narrative of girls’ easy achievement in school. Participants discussed balancing the hazards of being overly academic with the rewards of academic success. In response to this tension, girls carefully and consciously performed ‘smart girlhood’, drawing on resources that are more available to some girls than others, and indicating that girls’ academic success is neither easily embraced nor unambivalently accepted.  相似文献   

A structure‐agency perspective on young children's engagement in school science: Carlos's performance and narrative     

Maria Varelas  Eli Tucker‐Raymond  Kimberly Richards 《科学教学研究杂志》2015,52(4):516-529

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Teachers’ Thoughts on Teaching Reading: An Investigation of Early Childhood Teachers’ Perceptions of Literacy Acquisition     

Rebecca M. Giles  Karyn Tunks 《Early Childhood Education Journal》2015,43(6):523-530

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Writing Dinosaur Large and Mosquito Small: Prephonological Spellers’ Use of Semantic Information     

Lan Zhang  Rebecca Treiman 《Scientific Studies of Reading》2015,19(6):434-445

One influential theory of literacy development, the constructivist perspective, claims that young children believe that writing represents meaning directly and that the appearance of a written word should reflect characteristics of its referent. There has not been strong evidence supporting this idea, however. Circumventing several methodological concerns with previous studies, we examined written spellings of young children who did not yet use letters to represent the sounds of words, that is, prephonological spellers. We identified 38 prephonological spellers (M age = 4 years, 2 months) and measured the area of their writing productions. Prephonological spellers made significantly larger productions for words representing large objects than those representing small objects. This effect held true after controlling for the influences of other variables, including size of writing on previous trials and order of trial in a session. Our results suggest that young children sometimes use drawing-like features to communicate the meaning of words when writing.  相似文献   

Education policy mobility: reimagining sustainability in neoliberal times     

Marcia McKenzie  Andrew Bieler  Rebecca McNeil 《Environmental Education Research》2015,21(3):319-337

This paper is concerned with the twinning of sustainability with priorities of economic neoliberalization in education, and in particular via the mobility or diffusion of education policy. We discuss the literature on policy mobility as well as overview concerns regarding neoliberalism and education. The paper brings these analyses to bear in considering the uptake of sustainability in education policy. We ask to what extent sustainability as a vehicular idea may be twinning with processes of neoliberalization in education policy in ways that may undermine aspirations of, and action on, environmental sustainability. Toward the end of the paper, we draw on data from an empirical study to help elucidate how the analytic frames of policy mobility can inform our analyses of the potential concerns and possibilities of sustainability as a vehicular idea. In particular, we investigate how sustainability and related language have been adopted in the policies of Canadian post-secondary education institutions over time. The paper closes by suggesting the potential implications of the proceeding analyses for policymakers, practitioners, and researchers concerned with sustainability in education policy.  相似文献   

Erratum to: Applying cognitive science principles to improve retention of science vocabulary     

Rebecca Shore  Jenna Ray  Paula Goolkasian 《Learning Environments Research》2015,18(2):313-313

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Instructional expenditures and student achievement: a multiyear statewide analysis     

Maureen Cullen  Barbara Polnick  Rebecca Robles-Piña  John R. Slate 《Educational Research for Policy and Practice》2015,14(2):93-117

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