Simulating variation in order to learn classroom management     

Eva L. Ragnemalm  Marcus Samuelsson 《Educational Media International》2016,53(4):274-284

Classroom management is an important part of learning to be a teacher. The variation theory of learning provides the insight that it is important to vary the critical aspects of any task or subject that is to be learned. Simulation technology is useful in order to provide a controlled environment for that variation, and text as a medium gives the opportunity to control exactly what aspects are presented to the learner. This study shows that text-based simulation has the potential to help the learner discern critical aspects of classroom management.  相似文献   

Improvement in National Test arithmetic scores at Key Stage 1: Grade inflation or better achievement?     

Sara Meadows  David Herrick  Marcus Witt  The ALSPAC Study Team 《British Educational Research Journal》2008,34(4):491-503

The aim of the National Numeracy Strategy is to raise standards in numeracy. Strong evidence for its success has, however, been lacking: most of the available data come from performance on National Test assessments administered in schools or from Ofsted reports, and is vulnerable to suggestions of bias. An opportunistic analysis of data from a population cohort study extending over three school years compares school‐based scores at school entry and at age 7–8 with clinic‐based scores on similar tests. The results show a small but statistically significant rise between 1998 and 1999 and between 1998 and 2000 in scores on both KS1 arithmetic SATs taken in schools and the arithmetic component of the WISC test taken in an independent research clinic. This is evidence for a real rise in generalised arithmetic ability over this period which may be attributable to the children's experience of the National Numeracy Strategy.  相似文献   

Correlation network analysis shows divergent effects of a long-term,high-fat diet and exercise on early stage osteoarthritis phenotypes in mice     

Timothy M.Griffin  Albert Batushansky  Joanna Hudson  Erika Barboza Prado Lopes 《运动与健康科学(英文)》2020,9(2):119-131,197

Background:Obesity increases knee osteoarthritis(OA) risk through metabolic,inflammatory,and biomechanical factors,but how these systemic and local mediators interact to drive OA pathology is not well understood.We tested the effect of voluntary running exercise after chronic diet-induced obesity on knee OA-related cartilage and bone pathology in mice.We then used a correlation-based network analysis to identify systemic and local factors associated with early-stage knee OA phenotypes among the different diet and exercise groups.Methods:Male C57 BL/6 J mice were fed a defined control(10% kcal fat) or high fat(HF)(60% kcal fat) diet from 6 to 37 weeks of age.At 25 weeks,one-half of the mice from each diet group were housed in cages with running wheels for the remainder of the study.Histology,micro computed tomography,and magnetic resonance imaging were used to evaluate changes in joint tissue structure and OA pathology.These local variables were then compared to systemic metabolic(body mass,body fat,and glucose tolerance),inflammatory(serum adipokines and inflammatory mediators),and functional(mechanical tactile sensitivity and grip strength) outcomes using a correlation-based network analysis.Diet and exercise effects were evaluated by two-way analysis of variance.Results:An HF diet increased the infrapatellar fat pad size and posterior joint osteophytes,and wheel running primarily altered the subchondral cortical and trabecular bone.Neither HF diet nor exercise altered average knee cartilage OA scores compared to control groups.However,the coefficient of variation was≥25% for many outcomes,and some mice in both diet groups developed moderate OA(>33% maximum score).This supported using correlation-based network analyses to identify systemic and local factors associated with early-stage knee OA phenotypes.In wheel-running cohorts,an HF diet reduced the network size compared to the control diet group despite similar running distances,suggesting that diet-induced obesity dampens the effects of exercise on systemic and local OA-related factors.Each of the 4 diet and activity groups showed mostly unique networks of local and systemic factors correlated with early-stage knee OA.Conclusion:Despite minimal group-level effects of chronic diet-induced obesity and voluntary wheel running on knee OA pathology under the current test durations,diet and exercise substantially altered the relationships among systemic and local variables associated with early-stage knee OA.These results suggest that distinct pre-OA phenotypes may exist prior to the development of disease.  相似文献   

‘The Most Respectable Looking of Revolutionaries’     

Marcus Morris 《Cultural and Social History》2013,10(3):315-330

Abstract

New political histories of late nineteenth-century British political culture have closely analysed the role of language and rhetoric in popular politics. The focus on the content of political messages has meant that the ways such messages were communicated has often been overlooked, as have the varied forms of political communication in the period. This article follows on from recent work that has sought to examine the place of material and visual culture in popular politics in the period. In particular, it focuses on the links between dress, class and politics. It suggests that visual, along with material, forms of political communication remained important and that they illuminate the political culture of the period.  相似文献   

Objectively measured sedentary time and academic achievement in schoolchildren     

Luís Lopes  Rute Santos  Jorge Mota  Beatriz Pereira  Vítor Lopes 《Journal of sports sciences》2017,35(5):463-469

This study aimed to evaluate the relationship between objectively measured total sedentary time and academic achievement (AA) in Portuguese children. The sample comprised of 213 children (51.6% girls) aged 9.46 ± 0.43 years, from the north of Portugal. Sedentary time was measured with accelerometry, and AA was assessed using the Portuguese Language and Mathematics National Exams results. Multilevel linear regression models were fitted to assess regression coefficients predicting AA. The results showed that objectively measured total sedentary time was not associated with AA, after adjusting for potential confounders.  相似文献   

Combined training,FNDC5/irisin levels and metabolic markers in obese men: A randomised controlled trial     

Ivan Luiz Padilha Bonfante  Mara Patrícia Traina Chacon-Mikahil  Diego Trevisan Brunelli  Arthur Fernandes Gáspari  Renata Garbellini Duft  Wendell Arhur Lopes 《European Journal of Sport Science》2017,17(5):629-637

The effects of training on FNDC5/irisin and its association with fitness and metabolic marker improvements induced by training have been poorly investigated in humans. Thus, the present study assessed the effects of combined training (CT) on FNDC5/irisin levels, metabolic markers and fitness adaptations in obese men. Middle-age obese men (age 49.13?±?5.75, body mass index (BMI) 30.86?±?1.63) were randomly distributed in the CT group (n?=?12) and control group (CG n?=?10). The CT consisted of strength followed by aerobic training, 3 times/week, for 24 weeks. Body composition, physical fitness, plasma FNDC5/irisin, biochemical markers and metabolic scores/index were evaluated. CT maintained FNDC5/irisin levels (µg/mL) (pre: 4.15?±?0.32, post: 4.21?±?0.32; p?=?.96) and improved body composition, metabolic and physical fitness markers. In the CG, decreased FNDC5/irisin (µg/mL) (pre: 4.36?±?0.23, post: 3.57?±?0.94; p?=?.01) and reduced strength (supine exercise/kg) (pre: 71?±?14.7, post: 60.1?±?14.05; p?<?.01) were observed, along with a trend to increase HOMA-IR (pre: 2.63?±?1.11, post: 3.14?±?1.27; p?=?.07) and other indicators of metabolic deterioration. An inverse correlation was found between the change (Δ%) in levels of FNDC5/irisin and Δ% glucose, Δ% total cholesterol, Δ% triglycerides and Δ% waist circumference, in addition to a positive relation with Δ% muscle strength. In conclusion, CT maintained FNDC5/irisin levels and provided metabolic and fitness benefits. The correlation between FNDC5/irisin changes and metabolic parameters, as well as the FNDC5/irisin reduction associated with fitness and metabolic worsening in the CG, suggests a relationship between FNDC5/irisin and a healthy metabolic status in humans.  相似文献   

A Portable,Digital, Printing Caliper     

Leslie F. Marcus 《Curator: The Museum Journal》1982,25(3):223-226

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Why go to a trainer for non-training solutions? Eight reasons why trainers make good performance technologists     

Marcus E. Jorgensen 《Performance Improvement》1999,38(1):20-24

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Making Sense of Uncertainty in the Science Classroom     

Rosenberg  Joshua M.  Kubsch  Marcus  Wagenmakers  Eric-Jan  Dogucu  Mine 《Science & Education》2022,31(5):1239-1262

Science & Education - Uncertainty is ubiquitous in science, but scientific knowledge is often represented to the public and in educational contexts as certain and immutable. This contrast can...  相似文献   

Teacher and school determinants of perceived classroom discipline: a multilevel analysis of TALIS 2013     

Lopes  João A.  Oliveira  Célia 《Learning Environments Research》2022,25(1):41-58

Learning Environments Research - Classroom discipline is a significant concern in most educational systems and a critical element of an effective learning environment. In this article, we present a...  相似文献