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Amador García-Ramos Belén Feriche Alejandro Pérez-Castilla Paulino Padial Slobodan Jaric 《European Journal of Sport Science》2017,17(6):690-698
This study aimed to explore the strength of the force–velocity (F–V) relationship of lower limb muscles and the reliability of its parameters (maximum force [F0], slope [a], maximum velocity [V0], and maximum power [P0]). Twenty-three men were tested in two different jump types (squat and countermovement jump: SJ and CMJ), performed under two different loading conditions (free weight and Smith machine: Free and Smith) with 0, 17, 30, 45, 60, and 75?kg loads. The maximum and averaged values of F and V were obtained for the F–V relationship modelling. All F–V relationships were strong and linear independently whether observed from the averaged across the participants (r?≥?0.98) or individual data (r?=?0.94–0.98), while their parameters were generally highly reliable (F0 [CV: 4.85%, ICC: 0.87], V0 [CV: 6.10%, ICC: 0.82], a [CV: 10.5%, ICC: 0.81], and P0 [CV: 3.5%, ICC: 0.93]). Both the strength of the F–V relationships and the reliability of their parameters were significantly higher for (1) the CMJ over the SJ, (2) the Free over the Smith loading type, and (3) the maximum over the averaged F and V variables. In conclusion, although the F–V relationships obtained from all the jumps tested were linear and generally highly reliable, the less appropriate choice for testing the F–V relationship could be through the averaged F and V data obtained from the SJ performed either in a Free weight or in a Smith machine. Insubstantial differences exist among the other combinations tested. 相似文献
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俞倩兰 《常熟理工学院学报》2006,20(6):67-69
介绍了PID控制与Smith预估器的原理及特点，仿真实例验证了Smith预估器对大延迟系统的有效控制作用。 相似文献
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邓天玉 《沙洋师范高等专科学校学报》2003,4(2):62-63
鲁迅与史密斯在中国国民性的言论上,既有相同之处,如“中国人爱面子”、“中国人缺乏诚与爱”、“中国人缺乏时间观念”等;又有相并存在,如史密斯只看到了中国社会所表现出来的各种现象,而鲁迅却着到了速成这种社会现象的根源。 相似文献
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亚当·斯密的道德哲学包括神学、伦理学、法学和政治学,并把四者融为一体,成为一个和谐的体系。亚当.斯密由于受先验论和经验论的影响,提出上帝、神创造和谐并统领社会的一切,社会应当是一个经济、政治、法律、道德和社会成员个体相互和谐的统一整体。亚当.斯密所构想的社会是资本主义的和谐社会,要扬弃他的和谐思想,为当代中国所要建构的社会主义和谐社会服务。坚持以科学发展观统领社会发展全局,以改善民生为重点的原则来建构当代中国的和谐社会。 相似文献
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Barbara Comber 《English in Education》2007,41(2):7-26
This paper provides a retrospective account of three decades of my work as a literacy educator and researcher. Taking key insights from feminist sociologist, Dorothy Smith, including women's standpoint, the everyday world as problematic, institutional capture, a sociology for the people, I revisit my research on literacy, poverty and schooling. I argue that understanding better the effects of what we do in educational institutions, through collaborative research with teachers, can lead us to generate positive alternative equity‐driven practices. 相似文献
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＂斯密悖论＂指斯密在《国富论》中以利己心为核心的经济人和《道德情操论》中以同情心为核心的道德人之间的矛盾。一个半世纪以来,国内外学界围绕着这一＂悖论＂的研究持续不断。借助古诺模型的方法对＂斯密悖论＂中的经济人与道德人进行博弈分析,试图提出利己与利他的有机统一体——经济道德人。 相似文献
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亚当·斯密是英国杰出的古典经济学家,《国富论》是他留给人类的不朽名著。这部著作富含教育经济思想。文章从教育与社会经济发展的关系、教育与人力资本的关系、教育与就业的关系以及教育成本分担四个方面分析了斯密的教育经济思想。 相似文献
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Stephen Leacock(1869-1944) is one of the founding parents of Canadian letters and literature. In the early 20thcentury, his reputation as a humorist and a political economist was not limited by the boundaries of Canada but spread around the world. As one of his works, Sunshine Sketches of a Little Town has attracted world-wide admiration. It is a series of vignettes dramatizing the comedy of day-to-day life in Mariposa. It is bathed in the warm sunshine for all of us to laugh at as one of us remembers the little towns we might have known or come from. As a matter of fact, Leacock employs several techniques in his writing for humorous effect. This paper elaborates on the auther and the work, and makes an analysis on the character—Smith. 相似文献
10.
The extraordinary romance and thrilling adventure associated with the tale of wootz steel shows how Indian metallurgists were
the world leaders in antiquity in the manufacture of this legendary high-grade steel. In many ways this material was brought
to global attention by the writings of Cyril Stanley Smith. Modern metallurgy and materials science rest on the foundation
built by the study of this steel during the past three centuries. 相似文献