Interpersonal dynamics and relative positioning to scoring target of performers in 1 vs. 1 sub-phases of team sports     

Pedro T. Esteves  Duarte Araújo  Keith Davids  Luís Vilar  Bruno Travassos  Carlos Esteves 《Journal of sports sciences》2013,31(12):1285-1293

Abstract

In this study, we examined the effects of relative positioning of attacker–defender dyads to the basket on interpersonal coordination tendencies in basketball. To achieve this aim, four right-hand dominant basketball players performed in a 1 vs. 1 sub-phase, at nine different playing locations relative to the basket (from 0° to 180°, in 20° increments). Performers’ movement displacement trajectories were video-recorded and digitized in 162 trials. Results showed that interpersonal coordination tendencies changed according to the scaling of the relative position of performers to the basket.

Stable in-phase modes of coordination were observed between performers’ longitudinal and lateral displacements (50.47% and 43.02%) on the left side of the court. On the right side of the court, a shift in the dominant mode of coordination was observed to a defender lead-lag of ?30°, both for longitudinal and lateral displacements (30.51% and 32.65%). These results suggest how information about dribbler hand dominance and relative position to the basket may have constrained attacker–defender coordination tendencies in 1 vs. 1 sub-phases of basketball.  相似文献   

Associations between socio‐economic status (including school‐ and pupil‐level interactions) and student perceptions of school environment and health in English secondary schools          下载免费PDF全文

Nichola Shackleton  Elizabeth Allen  Leonardo Bevilacqua  Russell Viner  Chris Bonell 《British Educational Research Journal》2018,44(5):748-762

This article examines interactions between school‐level and pupil‐level measures of socio‐economic status for pupil reports of the school environment and a range of risk behaviours and health outcomes. The baseline survey for the INCLUSIVE trial provided data on pupil affluence and pupil reports of the school environment, smoking, drinking, anti‐social behaviour at school, quality of life and psychological wellbeing for over 6,000 pupils (aged 11–12 years) in 40 schools within a 1‐hour train journey from central London. The level of socio‐economic disadvantage of the school was measured using the percentage of pupils eligible for free school meals. Multilevel regression models examined the association between pupil affluence, the socio‐economic composition of the school and the interaction between these with the school environment, risk behaviours and health outcomes. Our findings provide some evidence for interactions, suggesting that less affluent pupils reported lower psychological wellbeing and quality of life in schools with more socio‐economically advantaged intakes. There appears to be a complex relationship for anti‐social behaviour. Where pupil affluence and school socio‐economic composition were discordant, pupils reported a higher number of anti‐social behaviours. This article provides further evidence that less affluent pupils are more likely to engage in a variety of risk behaviours and experience worse health outcomes when they attend schools with more socio‐economically advantaged intakes, supporting some of the mechanisms described in the theory of human functioning and school organisation.  相似文献   

Of Other Thoughts: Non-traditional ways to the doctorate. A guidebook for candidates and supervisors     

Zeus Leonardo 《Educational Philosophy and Theory》2016,48(5):539-541

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Probing transient protein-mediated DNA linkages using nanoconfinement     

Maedeh Roushan  Parminder Kaur  Alena Karpusenko  Preston J. Countryman  Carlos P. Ortiz  Shuang Fang Lim  Hong Wang  Robert Riehn 《Biomicrofluidics》2014,8(3)

We present an analytic technique for probing protein-catalyzed transient DNA loops that is based on nanofluidic channels. In these nanochannels, DNA is forced in a linear configuration that makes loops appear as folds whose size can easily be quantified. Using this technique, we study the interaction between T4 DNA ligase and DNA. We find that T4 DNA ligase binding changes the physical characteristics of the DNA polymer, in particular persistence length and effective width. We find that the rate of DNA fold unrolling is significantly reduced when T4 DNA ligase and ATP are applied to bare DNA. Together with evidence of T4 DNA ligase bridging two different segments of DNA based on AFM imaging, we thus conclude that ligase can transiently stabilize folded DNA configurations by coordinating genetically distant DNA stretches.  相似文献   

A procedure for determining the chemical composition of binder and aggregate in ancient mortars: its application to mortars from some medieval buildings in Pisa     

Marco Franzini  Leonardo Leoni  Marco Lezzerini 《Journal of Cultural Heritage》2000,1(4):365

The use of a scanning electron microscope equipped with a microanalytical system is proposed for characterising ancient mortars. A calculation procedure is presented that allows a determination of the binder and aggregate compositions (including volatile components) from microprobe data collected on the binder, and chemical, mineralogical, petrographical and physical data collected on the mortar bulk sample. The proposed procedure is applied to 11 mortar samples from three historical monuments built in Pisa throughout the Middle Ages. The binder of the analysed samples consists of a carbonate crystalline fraction and an amorphous carbonate-free fraction that makes up from 20 to 60 % by weight of the binder. The aggregate composition, on average, is close to that of the Arno River sands.  相似文献   

Improving OER descriptions to enhance their availability,reuse, and enrichment     

Herrera-Cubides  Jhon Francined  Gaona-Garc&#;a  Paulo Alonso  Montenegro-Mar&#;n  Carlos Enrique  S&#;nchez-Alonso  Salvador 《Education and Information Technologies》2022,27(2):1811-1839

Education and Information Technologies - Nowadays, information and communication technologies (ICTs) and virtual training have increased the use of educational resources. This growth use has...  相似文献   

Association of Gestational Diabetes Mellitus and Perinatal Maternal Depression with Early Childhood Behavioral Problems: An Environmental Influences on Child Health Outcomes (ECHO) Study     

Lauren C. Shuffrey  Santiago Morales  Melanie H. Jacobson  Michelle Bosquet Enlow  Akhgar Ghassabian  Amy E. Margolis  Maristella Lucchini  Kecia N. Carroll  Rosa M. Crum  Dana Dabelea  Arielle Deutsch  William P. Fifer  Brandon Goldson  Christine W. Hockett  W. Alex Mason  Lisette T. Jacobson  Thomas G. O'Connor  Nicolò Pini  Yael Rayport  Ayesha Sania  Leonardo Trasande  Rosalind J. Wright  Seonjoo Lee  Catherine Monk  program collaborators for Environmental influences on Child Health Outcomes 《Child development》2023,94(6):1595-1609

This study examined the association of gestational diabetes mellitus (GDM), prenatal, and postnatal maternal depressive symptoms with externalizing, internalizing, and autism spectrum problems on the Preschool Child Behavior Checklist in 2379 children aged 4.12 ± 0.60 (48% female; 47% White, 32% Black, 15% Mixed Race, 4% Asian, <2% American Indian/Alaskan Native, <2% Native Hawaiian; 23% Hispanic). Data were collected from the NIH Environmental influences on Child Health Outcomes (ECHO) Program from 2009-2021. GDM, prenatal, and postnatal maternal depressive symptoms were each associated with increased child externalizing and internalizing problems. GDM was associated with increased autism behaviors only among children exposed to perinatal maternal depressive symptoms above the median level. Stratified analyses revealed a relation between GDM and child outcomes in males only.  相似文献