The Effect of the Amount Reference in the Legitimizing Paltry Contribution Technique on Altruism     

Nicolas Guéguen 《Communication Research Reports》2013,30(4):306-312

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Mediators and the Material Stabilization of Society     

Nicolas Bencherki 《传播与批判/文化研究》2013,10(1):101-106

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Aggression in Soccer     

Alan Traclet  Olivier Rascle  Nicolas Souchon  Geneviève Coulomb-Cabagno  Carrie Petrucci  Ken-Ichi Ohbuchi 《Research quarterly for exercise and sport》2013,84(2):398-402

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One- or Two-Legged Standing     

Patrice Rougier  Nicolas Genthon  Thibault Gallois-Montbrun  Steve Brugière  Eric Bouvat 《Research quarterly for exercise and sport》2013,84(4):702-709

To highlight the capacity of one- and two-legged standing protocols when assessing postural behavior induced by a rigid ankle orthosis, 14 healthy individuals stood upright barefoot and wore either an elastic stocking on the preferred leg or a rigid orthosis with or without additional taping in one- or two-legged (TL) conditions. Traditional center-of-pressure (CP) measures were evaluated for the total two-feet resultant CP and under the feet (plantar CP). Focusing on the plantar CP displacements under the leg fitted with the various orthoses demonstrated particular postural behaviors for traditional parameters with main effects along the mediolateral axis. Only the TL protocol showed the limiting effects of the rigid shells on the inversion-eversion movements in healthy individuals.  相似文献   

Aging of running shoes and its effect on mechanical and biomechanical variables: implications for runners     

Nicolas Chambon  Violaine Sevrez  Quoc Hung Ly  Nils Guéguen  Eric Berton  Guillaume Rao 《Journal of sports sciences》2013,31(11):1013-1022

Abstract

This study investigates the effect of running shoes’ aging on mechanical and biomechanical parameters as a function of midsole materials (viscous, intermediate, elastic) and ground inclination. To this aim, heel area of the shoe (under calcaneal tuberosity) was first mechanically aged at realistic frequency and impact magnitudes based on a 660 km training plan. Stiffness (ST) and viscosity were then measured on both aged and matching new shoes, and repercussions on biomechanical variables (joint kinematics, muscular pre-activation, vertical ground reaction force and tibial acceleration) were assessed during a leg-extended stepping-down task designed to mimic the characteristics of running impacts. Shoes’ aging led to increased ST (means: from 127 to 154 N ? mm^?1) and decreased energy dissipation (viscosity) (means: from 2.19 to 1.88 J). The effects induced by mechanical changes on body kinematics were very small. However, they led with the elastic shoe to increased vastus lateralis pre-activation, tibial acceleration peak (means: from 4.5 g to 5.2 g) and rate. Among the three shoes tested, the shoe with intermediate midsole foam provided the best compromise between viscosity and elasticity. The optimum balance remains to be found for the design of shoes regarding at once cushioning, durability and injury prevention.  相似文献   

Implementing Eratosthenes’ Discovery in the Classroom: Educational Difficulties Needing Attention     

Nicolas Décamp  Cécile de Hosson 《Science & Education》2012,21(6):911-920

This paper presents a critical analysis of the accepted educational use of the method performed by Eratosthenes to measure the circumference of Earth which is often considered as a relevant means of dealing with issues related to the nature of science and its history. This method relies on a number of assumptions among which the parallelism of sun rays. The assumption of sun rays parallelism (if it is accurate) does not appear spontaneous for students who consider sun rays to be divergent. Here, we propose an educational reconstruction of Eratosthenes?? discovery based on the exploitation of a narrative written by Cleomedes during the first century AD. This implies that the students are involved in an elaboration of parallelism by an approach where the notion of ??approximation?? remains central.  相似文献   

V. NIH TOOLBOX COGNITION BATTERY (CB): MEASURING WORKING MEMORY     

David S. Tulsky  Noelle E. Carlozzi  Nicolas Chevalier  Kimberly A. Espy  Jennifer L. Beaumont  Dan Mungas 《Monographs of the Society for Research in Child Development》2013,78(4):70-87

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Randomization‐based statistical inference: A resampling and simulation infrastructure          下载免费PDF全文

Ivo D. Dinov  Selvam Palanimalai  Ashwini Khare  Nicolas Christou 《Teaching Statistics》2018,40(2):64-73

Statistical inference involves drawing scientifically‐based conclusions describing natural processes or observable phenomena from datasets with intrinsic random variation. We designed, implemented, and validated a new portable randomization‐based statistical inference infrastructure ( http://socr.umich.edu/HTML5/Resampling_Webapp ) that blends research‐driven data analytics and interactive learning, and provides a backend computational library for managing large amounts of simulated or user‐provided data. We designed, implemented and validated a new portable randomization‐based statistical inference infrastructure ( http://socr.umich.edu/HTML5/Resampling_Webapp ) that blends research‐driven data analytics and interactive learning, and provides a backend computational library for managing large amounts of simulated or user‐provided data. The core of this framework is a modern randomization webapp, which may be invoked on any device supporting a JavaScript‐enabled web browser. We demonstrate the use of these resources to analyse proportion, mean and other statistics using simulated (virtual experiments) and observed (e.g. Acute Myocardial Infarction, Job Rankings) data. Finally, we draw parallels between parametric inference methods and their distribution‐free alternatives. The Randomization and Resampling webapp can be used for data analytics, as well as for formal, in‐class and informal, out‐of‐the‐classroom learning and teaching of different scientific concepts. Such concepts include sampling, random variation, computational statistical inference and data‐driven analytics. The entire scientific community may utilize, test, expand, modify or embed these resources (data, source‐code, learning activity, webapp) without any restrictions.  相似文献   

The Medium Is The Message     

Nicolas Rasmussen 《Metascience》2008,17(2):293-296

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Comparing ActiGraph equations for estimating energy expenditure in older adults     

Nicolas Aguilar-Farias  G.M.E.E. Peeters  Robert J Brychta  Kong Y Chen  Wendy J Brown 《Journal of sports sciences》2019,37(2):188-195

Accurate estimation of energy expenditure (EE) from accelerometer outputs remains a challenge in older adults. The aim of this study was to validate different ActiGraph (AG) equations for predicting EE in older adults. Forty older adults (age = 77.4 ± 8.1 yrs) completed a set of household/gardening activities in their residence, while wearing an AG at the hip (GT3X+) and a portable calorimeter (MetaMax 3B – criterion). Predicted EEs from AG were calculated using five equations (Freedson, refined Crouter, Sasaki and Santos-Lozano (vertical-axis, vectormagnitude)). Accuracy of equations was assessed using root-mean-square error (RMSE) and mean bias. The Sasaki equation showed the lowest RMSE for all activities (0.47 METs) and across physical activity intensities (PAIs) (range 0.18–0.48 METs). The Freedson and Santos-Lozano equations tended to overestimate EE for sedentary activities (range: 0.48 to 0.97 METs), while EEs for moderate-to-vigorous activities (MVPA) were underestimated (range: ?1.02 to ?0.64 METs). The refined Crouter and Sasaki equations showed no systematic bias, but they respectively overestimated and underestimated EE across PAIs. In conclusion, none of the equations was completely accurate for predicting EE across the range of PAIs. However, the refined Crouter and Sasaki equations showed better overall accuracy and precision when compared with the other methods.  相似文献