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J. Kirk Gulledge 《Educational gerontology》2013,39(6):637-644
A survey of 289 pastors from, three major denominations found that clergy demonstrate a relatively high level of gerontological knowledge in comparison with other reference groups, but that their concepts of aging are affected by a number of consistent stereotypes and inaccuracies that may negatively influence their ministry among older adults. This study addresses the major stereotypes identified by the Facts on Aging Quiz, summarizes gerontological education needs described by the respondents, and draws implications for gerontological training as part of seminary education. 相似文献
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In this study, we compared mechanical factors in the reverse and three-inch power punches. Twelve expert male martial artists stood on a force plate, and executed reverse and power punches against a padded target fixed to a wall-mounted force plate. The force plates measured horizontal forces, and subsequently impulses and body centre of mass velocity changes. The motions of four markers attached to the arm were also collected, and were used to compute the horizontal velocities of the knuckle and of the arm centre of mass. The power punch produced smaller velocities immediately before impact than the reverse punch for the whole-body centre of mass (0.14 vs. 0.31 m x s(-1)), for the arm centre of mass (2.86 vs. 4.68 m x s(-1)), and for the knuckle (4.09 vs. 6.43 m x s(-1)). The peak force exerted by the fist was much smaller in the power punch than in the reverse punch (790 vs. 1450 N). However, the linear impulse exerted by the fist during the first 0.20 s of contact was slightly larger in the power punch than in the reverse punch (43.2 vs. 37.7 N x s). The results indicate that the power punch is less potent than the reverse punch, but slightly more effective for throwing the opponent off balance. 相似文献
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J. Keith Gulledge 《Journal of sports sciences》2013,31(2):189-196
Abstract In this study, we compared mechanical factors in the reverse and three-inch power punches. Twelve expert male martial artists stood on a force plate, and executed reverse and power punches against a padded target fixed to a wall-mounted force plate. The force plates measured horizontal forces, and subsequently impulses and body centre of mass velocity changes. The motions of four markers attached to the arm were also collected, and were used to compute the horizontal velocities of the knuckle and of the arm centre of mass. The power punch produced smaller velocities immediately before impact than the reverse punch for the whole-body centre of mass (0.14 vs. 0.31 m · s?1), for the arm centre of mass (2.86 vs. 4.68 m · s?1), and for the knuckle (4.09 vs. 6.43 m · s?1). The peak force exerted by the fist was much smaller in the power punch than in the reverse punch (790 vs. 1450 N). However, the linear impulse exerted by the fist during the first 0.20 s of contact was slightly larger in the power punch than in the reverse punch (43.2 vs. 37.7 N · s). The results indicate that the power punch is less potent than the reverse punch, but slightly more effective for throwing the opponent off balance. 相似文献
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This paper explores a recent interdisciplinary project which brought together a visualization expert, an art historian, and an architectural historian, to study the ruins of Saint George of the Greeks Cathedral in Famagusta, eastern Cyprus, then create a virtual three-dimensional reconstruction of it. The motivation for this work, funded by Nanyang Technological University in Singapore, was to apply existing knowledge and expertise to a difficult, and very particular, heritage question on this Eastern Mediterranean Island. The creation of such a model could, it was felt, not only reiterate the academic value of thorough archival work married to state of the art technology, but also have very practical reverberations in terms of future heritage welfare and education via this ‘borderless’ domain. 相似文献
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