A persistent particle ontology for Quantum field theory     

Adam Caulton 《Metascience》2018,27(3):439-441

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Adding reagent to droplets with controlled rupture of encapsulated double emulsions     

Adam Sciambi  Adam R. Abate 《Biomicrofluidics》2013,7(4)

We present a method to add reagent to microfluidic droplets by enveloping them as a double emulsions in reagent-filled droplets and then rupturing them with an electric field. When the double emulsions rupture, they release their contents into the enveloping droplets, ensuring mixing with reagent while limiting cross-droplet contamination.  相似文献   

Deception in Sport: A New Taxonomy of Intra-Lusory Guiles     

Adam G. Pfleegor 《体育哲学杂志》2013,40(2):209-231

Almost four decades ago, Kathleen Pearson examined deceptive practices in sport using a distinction between strategic and definitional deception. However, the complexity and dynamic nature of sport is not limited to this dual-categorization of deceptive acts and there are other features of deception in sport unaccounted for in Pearson's constructs. By employing Torres’s elucidation of the structure of skills and Suits's concept of the lusory-attitude, a more thorough taxonomy of in-contest sport deception will be presented. Despite the ubiquitous presence of deception in sport, few scholars have examined this concept in the sport philosophy literature since Pearson’s contribution. This paper hopes to advance a deeper understanding of deceptive practices in competitive sport and also comment on the ethical permissibility of certain sport skills from a moral perspective.  相似文献   

The Ethics of Coaching Sports: Moral,Social, and Legal Issues     

Adam G. Pfleegor 《体育哲学杂志》2013,40(3):468-473

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Adjusting athletes' body mass index to better reflect adiposity in epidemiological research     

Alan M. Nevill  Edward M. Winter  Steve Ingham  Adam Watts  Georgios S. Metsios  Arthur D. Stewart 《Journal of sports sciences》2013,31(9):1009-1016

Abstract

The aim of the present study was to identify when body mass index (BMI) is unlikely to be a valid measure of adiposity in athletic populations and to propose a simple adjustment that will allow the BMI of athletes to reflect the adiposity normally associated with non-athletic populations. Using data from three previously published studies containing 236 athletes from seven sports and 293 age-matched controls, the association between adiposity (sum of 4 skinfold thicknesses, in millimetres) and BMI was explored using correlation, linear regression, and analysis of covariance (ANCOVA). As anticipated, there were strong positive correlations (r = 0.83 for both men and women) and slope parameters between adiposity and BMI in age-matched controls from Study 1 (all P < 0.001). The standard of sport participation reduced these associations. Of the correlations and linear-regression slope parameters between adiposity and BMI in the sports from Studies 2 and 3, although still positive in most groups, less than half of the correlations and slope parameters were statistically significant. When data from the three studies were combined, the ANCOVA identified that the BMI slope parameter of controls (5.81 mm · (kg · m^?2)^?1) was greater than the BMI slope parameter for sports (2.62 mm · (kg · m^?2)^?1) and middle-distance runners (0.94 mm · (kg · m^?2)^?1) (P < 0.001). Based on these contrasting associations, we calculated how the BMI of athletes can be adjusted to reflect the same adiposity associated with age-matched controls. This simple adjustment allows the BMI of athletes and non-athletes to be used with greater confidence when investigating the effect of BMI as a risk factor in epidemiological research.  相似文献   

Referee bias contributes to home advantage in English Premiership football     

Ryan H. Boyko  Adam R. Boyko  Mark G. Boyko 《Journal of sports sciences》2013,31(11):1185-1194

Abstract

Officiating bias is thought to contribute to home advantage. Recent research has shown that sports with subjective officiating tend to experience greater home advantage and that referees' decisions can be influenced by crowd noise, but little work has been done to examine whether individual referees vary in their home bias or whether biased decisions contribute to overall home advantage. We develop an ordinal regression model to determine whether various measures of home advantage are affected by the official for the match and by crowd size while controlling for team ability. We examine 5244 English Premier League (EPL) match results involving 50 referees and find that home bias differs between referees. Individual referees give significantly different levels of home advantage, measured as goal differential between the home and away teams, although the significance of this result depends on one referee with a particularly high home advantage (an outlier). Referees vary significantly and robustly in their yellow card and penalty differentials even excluding the outlier. These results confirm that referees are responsible for some of the observed home advantage in the EPL and suggest that home advantage is dependent on the subjective decisions of referees that vary between individuals. We hypothesize that individual referees respond differently to factors such as crowd noise and suggest further research looking at referees' psychological and behavioural responses to biased crowds.  相似文献   

The moral obligation to preserve heritage through sport and recreation facilities     

Adam G. Pfleegor  Chad S. Seifried  Brian P. Soebbing 《Sport Management Review》2013,16(3):378-387

The preservation of heritage through renovation projects of sport and recreation facilities is a recent phenomenon. We are not generally prompted to think of sport and recreation venues as cultural objects to preserve or as hosts to heritage, yet, they appear to be significant sources of heritage for communities and fan nations (Mason et al., 2005, Rosentraub and Ijla, 2008). Noting facilities have the ability to preserve heritage, the aim of this paper is to review contemporary philosopher Peter Singer's (1993) perspective on moral obligation to highlight the potential to protect heritage through sport and recreation facility management practices. We argue that communities and constituents may have a moral obligation to preserve heritage through sport and recreation facilities due to the value they possess. Appropriately, preservation is defined and framed as a managerial activity to assure the survival social, political, and cultural records.  相似文献   

Book review   总被引：1，自引：0，他引：1  

Adam Scrupski 《Academic Questions》1992,5(2):88-93

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The effect of childhood bereavement on secondary school performance     

Adam Abdelnoor 《Educational Psychology in Practice》2004,20(1):43-54

This paper reports on a UK survey of GCSE examination results for children from schools throughout England who had lost a parent (n = 73) or sibling (n = 24) through death to establish whether this had a long‐term impact on school performance, levels of anxiety and self‐esteem, and school attendance. Participants were matched for school, age, gender and ethnicity, and a smaller group for socio‐economic status. The Speilberger Anxiety and Coopersmith self‐esteem inventories were administered alongside a customised family history questionnaire.

Bereaved participants underachieved significantly depending upon age, gender, and parents' employment history. There was also a significant rise in anxiety among the parentally bereaved group. School attendance seemed unaffected. Childhood bereavement appears to be a robust factor in underachievement. The totality of the survey findings is discussed prospectively in this paper.  相似文献   

Behavior Problems and Social Skills in Preschool Children: Parent-Teacher Agreement and Relations with Classroom Observations     

Adam Winsler  Gregory L. Wallace 《Early education and development》2002,13(1):41-58

The goals of the present investigation were to provide basic psychometric information about the use of the Preschool and Kindergarten Behavior Scales (PKBS: Merrill, 1994) with a sample of normally-developing preschool children, to assess agreement between parent and teacher ratings of children on this instrument, and to assess concurrent, criterion-related validity of these instruments in terms of their relations with observations of children's behavior in the classroom. Parents and teachers of 47 preschool children completed the scales and these children were observed naturalistically in the classroom setting. Overall, agreement between parents and teachers was modest (-.09 to .38). Cross-informant correlations were poor (-.09 to .27) for social skills, low (.15 to .36) for internalizing behaviors, and modest (.29 to .38) for externalizing behavior. Both parents and teachers rated boys as having more externalizing behavior problems than girls. Parents perceived their children to have more externalizing, and more overall, behavior problems than did teachers. In general, teacher reports, but not parent reports, were significantly associated with children's independently observed goal-directed activity, sustained attention, inappropriate behavior, peer affiliation, expressed negative affect, and proximity to a teacher in the classroom. Results argue for the clinical utility of the PKBS for teacher-report assessment of child behavior problems and social skills in the preschool years, and suggest the need for cross-contextual assessment. Also, it is clear that children's behavioral and social competence are crucial for optimal functioning in the preschool setting.  相似文献