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21.
Jack C. Morgan 《The Teacher Educator》2013,48(1):24-28
This article summarizes the areas of educational research sponsored by the federal government and describes some projects of special significance. 相似文献
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Determining heterogeneous behavior for theater attendance 总被引:2,自引:1,他引:1
Victoria Ateca-Amestoy 《Journal of Cultural Economics》2008,32(2):127-151
In this paper we propose and estimate a model of theater participation using the data contained in the 2002 Survey of Public Participation in the Arts from the USA, a dataset widely used to study the determinants of cultural participation. Our contribution relies on the use
of an estimation technique that respects the count data nature of the attendance variable (number of theater performances
that an individual attended) and allows for heterogeneous behavior. By using a Zero Inflated Negative Binomial Model, we can
characterize two distinct behaviors for the observable attendance: a group of never-goers (who never participate) and a subpopulation
that has a positive probability of attending. For this latter group, we can estimate the effect of certain personal variables
on the probability of highest frequency. The results suggest that the proposed model is appropriate for estimating cultural
participation.
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Victoria Ateca-AmestoyEmail: |
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The purpose of this study was to compare submaximal physiological responses and indices of mechanical efficiency between asynchronous and synchronous arm ergometry. Thirteen wheelchair-dependent trained athletes performed eight steady-state incremental bouts of exercise (0 to 140 W), each lasting 4 min, using synchronous and asynchronous arm-cranking strategies. Physiological measures included oxygen uptake (VO2), heart rate, and blood lactate concentration. The power outputs corresponding to fixed whole blood lactate concentrations of 2.0 to 4.0 mmol x l(-1) were calculated using linear interpolation. Mechanical efficiency indices - gross efficiency, net efficiency, and work efficiency - were also calculated. An analysis of variance with repeated measures was applied to determine the effect of crank mode on the physiological parameters. Oxygen uptake was on average 10% lower (P < 0.01), and both net efficiency (P < 0.01) and gross efficiency (P < 0.01) were higher, during the asynchronous strategy at both 60 and 80 W (gross efficiency: 16.9 +/- 2.0% vs. 14.7 +/- 2.4% and 17.5 +/- 1.8% vs. 15.9 +/- 2.6% at 60 and 80 W respectively). There were no differences in heart rate, blood lactate concentration or power output at either of the blood lactate reference points between the asynchronous and synchronous strategies (P > 0.05). In conclusion, test specificity is an important consideration. If a synchronous strategy is to be adopted, it is likely to result in lower efficiency than an asynchronous strategy. The exercise testing scenario may help dictate which method is ultimately chosen. 相似文献
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Jack Anderson 《国际体育史杂志》2015,32(15):1764-1768
The brief note aims to illustrate how historical context has contributed to my writing on modern sports law and principally through two pieces of work – the first relating to the historical, sui generis origins of the legality of combat or fighting sports, which continues to stretch the boundaries of core principles of criminal law, such as reasonable consent to bodily harm, to their utmost; and second, and more generally, the ‘historicalegal’ influences on the development of modern sport in mid-nineteenth-century Britain. Before that is done, it is best to give some account of research methodologies in legal scholarship and principally as they apply to legal history. 相似文献
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