Contextual influences on baseball ball-strike decisions in umpires, players, and controls     

MacMahon C  Starkes JL 《Journal of sports sciences》2008,26(7):751-760

Baseball umpires, players, and control participants with no baseball experience were asked to call balls and strikes for video clips. In a basic judgement task, umpires and players were significantly better at calling pitches than controls. In a direct information task, borderline pitches were presented following clips of definite balls and definite strikes. Participants called target pitches closer to the strike end of the scale when viewed after definite balls than when they followed definite strikes. Similarly, when borderline pitches were shown in different pitch counts, participants called pitches more towards the strike end of the scale when there were three balls in the count (3-0, 3-2). These findings indicate that the standard for evaluation changes based on the context in which stimuli are processed. Moreover, the strength of the contextual factors is illustrated in that the effects were shown in observers with and without experience in the task. Overall, however, umpires had a greater tendency to call strikes, indicating that they may use a norm of "hastening the game".  相似文献   

Seasonal progression and variability of repeat-effort line-drill performance in elite junior basketball players     

Montgomery PG  Pyne DB  Hopkins WG  Minahan CL 《Journal of sports sciences》2008,26(5):543-550

To determine gender differences, positional differences, and patterns of change in the performance of the basketball line-drill test, 93 male (mean age 16.8 years, s = 1.1) and 95 female (mean age 16.5 years, s = 1.0) basketball players undertook 516 line-drill tests over a 5-year period. Log-transformed performance times were analysed using a mixed model that included quadratic within-participant fixed effects for time in the season and time in the programme. Changes and differences were standardized for interpretation of magnitudes. Mean performance times were 28.0 s (s = 1.3) for males and 30.4 s (s = 1.3) for females. The mean pattern of change in performance within a season differed substantially between the sexes and playing positions: male guards and female centres showed moderate to very large improvements mid-season of 1.1% and 3.5% respectively (90% confidence limits +/-2.1% and +/-3.0%), while female guards and male forwards showed large to very large decrements of -1.6% (+/-2.6%) and -2.4% (+/-2.0%). Over 3 years, males improved performance across all three playing positions by 1.4% (+/-1.3%) and females by 2.9% (+/-1.4%). Males improved performance by 0.2% (+/-0.5%) per year, whereas the performance of females deteriorated by 0.6% (+/-0.4%) per year. The differing patterns of performance change presumably reflect variations in training and competition loads, with short-term fluctuations in performance being managed to promote longer-term improvements.  相似文献   

Export restrictions,tax incentives and the national artistic patrimony     

Clare McAndrew  John O'Hagan 《Cultural Trends》2000,10(37):41-63

This paper analyses the main forms of government intervention used in the UK to protect the national artistic patrimony. It examines the two most common policy measures used in the art market ‐ export regulation and tax incentives ‐ and reports their use over an eight‐year period from 1990 to 1998. It also reviews the UK's collective obligations to patrimony internationally and specifically as a member of the European Union. This is the first time that these related topics have been considered as a whole.  相似文献   

The hip control test is a valid and reliable measure of hip neuromuscular control     

Richard A. Brindle  Clare E. Milner 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(2):235-244

Abstract

Insufficient hip neuromuscular control may contribute to non-contact sport injuries. However, the current evaluative test of hip neuromuscular control, the single-leg squat, requires hip abductor muscle strength to complete. The purpose of this study was to develop the hip control test (HCT) and determine the test’s reliability and construct validity. Nineteen healthy adults visited the laboratory twice. The HCT is a 10-s test of reciprocal toe-tapping accuracy. Both automated and manual HCT ratings were recorded simultaneously during each visit. Additionally, eccentric hip abductor torque was measured. HCT reliability was assessed with intra-class correlation coefficients (ICC). Agreement between automated and manual ratings was determined with Bland–Altman plots. Construct validity was established if HCT performance significantly decreased with a secondary cognitive task (p < 0.05). Bivariate regression determined the relationship between HCT performance and eccentric hip abductor torque. Automated and manual HCT ratings both had moderate reliability (ICC = 0.72) and yielded similar results (limits of agreement = ?1 to 2 taps). The HCT had construct validity (p = 0.001), and no correlation with hip abductor muscle strength (r = 0.213). Thus, the HCT is a reliable and valid test. The HCT is simple to administer and measures hip neuromuscular control separately from strength.  相似文献   

Mentoring and sponsorship in higher education institutions: men’s invisible advantage in STEM?     

Pat O’Connor  Clare O’Hagan  Eva Sophia Myers  Liv Baisner  Georgi Apostolov  Irina Topuzova 《高等教育研究与发展》2020,39(4):764-777

ABSTRACT

This article is concerned with the source of men’s invisible advantage in the male-dominated disciplines of Science, Technology, Engineering and Mathematics (STEM). It is suggested that this advantage has been obscured by combining sponsorship and mentoring. The research asks: Are men or women most likely to be mentored? Is it possible to distinguish between mentoring and sponsorship? Is there gender variation in either or both of these depending on the source – whether from the academic supervisor, line manager or other senior academics? This qualitative study draws on interview data from 106 respondents (57 men and 48 women) at high, mid and early levels, in four universities: one each in Bulgaria, Denmark, Ireland, and Turkey. It shows that both men and women received mentoring from their PhD supervisor, albeit with slightly different reported nuances. Men were more likely than women to receive sponsorship in that relationship. Both men and women received sponsorship from the Head of Department, whose wider responsibilities may have reduced homophily. Men were more likely than women to receive sponsorship and mentoring from senior men, with most women indicating a lack of access to such senior academics. By distinguishing between mentoring and sponsorship, this article contributes to our understanding of the way male dominance in STEM is perpetuated and suggests the source of men’s invisible advantage in STEM.  相似文献   

Queering the Interior     

Clare Taylor 《Cultural and Social History》2019,16(5):683-684

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Economic impact of the arts: Theatre festivals in small Ontario communities     

Clare J. A. Mitchell 《Journal of Cultural Economics》1993,17(2):55-67

Conclusions This paper has demonstrated that visitors to professional theatre companies located in towns and villages of southern Ontario contribute to the economic well-being of the local economy. Furthermore, it has been documented that while all communities receive some monetary benefits, spatial variations are found to exist. These discrepancies are a function of differences in the average expenditures of non-local residents and the total number of visitors attending the theatre event. As expected, average expenditures appear to be highest in communities supporting a large commercial sector which are capable of sustaining a touris market. Moreover, the number of visitors attending a theatre event appears to be greatest in small communities supporting an established theratre company.  相似文献   

Performance analysis and prediction in triathlon     

Bahadorreza Ofoghi  John Zeleznikow  Clare Macmahon  Jan Rehula 《Journal of sports sciences》2016,34(7):607-612

Performance in triathlon is dependent upon factors that include somatotype, physiological capacity, technical proficiency and race strategy. Given the multidisciplinary nature of triathlon and the interaction between each of the three race components, the identification of target split times that can be used to inform the design of training plans and race pacing strategies is a complex task. The present study uses machine learning techniques to analyse a large database of performances in Olympic distance triathlons (2008–2012). The analysis reveals patterns of performance in five components of triathlon (three race “legs” and two transitions) and the complex relationships between performance in each component and overall performance in a race. The results provide three perspectives on the relationship between performance in each component of triathlon and the final placing in a race. These perspectives allow the identification of target split times that are required to achieve a certain final place in a race and the opportunity to make evidence-based decisions about race tactics in order to optimise performance.  相似文献   

Starving for Knowledge: Why Campuses Need to Address Student Food Insecurity          下载免费PDF全文

Clare Cady 《About Campus》2016,21(2):27-31

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Letters to the Editor     

Clare Lee  Karen L. Westberg  Sally M. Dobyns  Francis X. Archambault Jr.  Scott W. Brown  James R. Delisle 《Roeper Review》2013,35(1)

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