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比较成本理论的数学描述与统一 被引量:1
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作者 梁琦 《学术研究》 CSSCI 北大核心 1998年第3期55-58,共4页
比较成本理论的数学描述与统一梁琦一个世纪以前由英国古典经济学家大卫·李嘉图创立的比较成本理论,一直是西方国际贸易理论的主线。但李嘉图在他的名著《政治经济学与赋税原理》中,以英国与葡萄牙为例,只是表述了他的比较成本... 比较成本理论的数学描述与统一梁琦一个世纪以前由英国古典经济学家大卫·李嘉图创立的比较成本理论,一直是西方国际贸易理论的主线。但李嘉图在他的名著《政治经济学与赋税原理》中,以英国与葡萄牙为例,只是表述了他的比较成本的思想,并没有给比较成本下明确的定义,... 展开更多
关键词 比较成本理论 产品 相对成本 比较成本 比较利益法则 奥林理论 机会成本
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The influence of physiobiomechanical parameters,technical aspects of shooting,and psychophysiological factors on biathlon performance:A review 被引量:6
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作者 Marko S.Laaksonen Thomas Finkenzeller +1 位作者 Hans-Christer Holmberg Gerold Sattlecker 《Journal of Sport and Health Science》 SCIE 2018年第4期394-404,共11页
The biathlon, an Olympic sporting discipline that combines cross-country skiing with rifle marksmanship, entails considerable physiological demands, as well as fine motor control while shooting after intense exercise ... The biathlon, an Olympic sporting discipline that combines cross-country skiing with rifle marksmanship, entails considerable physiological demands, as well as fine motor control while shooting after intense exercise and under mental pressure. Although much of our knowledge about cross-country skiing is probably also applicable to the biathlon, carrying the rifle and shooting under stress make this discipline somewhat unique. The present review summarizes and examines the scientific literature related to biathlon performance, with a focus on physiological and biomechanical factors and shooting technique, as well as psychophysiological aspects of shooting performance. We conclude with suggestions for future research designed to extend our knowledge about the biathlon, which is presently quite limited.2018 Published by Elsevier B.V. on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license. (http://creativecommons.org/licenses/by-nc-nd/4.0/). 展开更多
关键词 Cortical activity Gaze behavior Postural balance SKIING TRIGGERING
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