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Wei-Han Chen Ya-Chen Liu Hsing-Hao Tai 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(1):98-116
This paper propose innovative eco-fitness equipment—a water buoyancy muscular machine (WBM machine) in which resistance is generated by buoyancy and fluid resistance. The resistance characteristics during resistance adjustment and under isometric, concentric, eccentric and isokinetic conditions were investigated and compared to a conventional machine with metal weight plates. The results indicated that the isometric, concentric and eccentric resistances could be adjusted by varying the water volume; the maximum resistances under isometric, concentric and eccentric conditions were 163.8, 338.5 and 140.9 N, respectively. The isometric resistances at different positions remained constant in both machines; however the isometric resistance was lower for WBM machine when at a position corresponding to a 5% total displacement. The WBM machine has lower resistance under eccentric conditions and higher resistance under concentric conditions. Although the conventional machine has an identical trend, the variation was minor (within 4 N). In the WBM machine, the eccentric resistance was approximately 30–45% of the concentric resistance. Concentric resistances increased with an increase in velocity in both machines; however, the eccentric resistances decreased with an increase in velocity. In summary, the WBM machine, a piece of innovative eco-fitness equipment, has unique resistance characteristics and expansibility. 相似文献
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The integrated-skills approach (ISA), which incorporates the four language skills-reading, writing, speaking, and listening-has
become a dominant trend in FL college instruction in Taiwan. The purpose of the study was to examine how the ISA is being
used in Taiwan’s EFL college classes, develop an understanding of students’ satisfaction with the integrated-skill class and
authentic activities, and determine if students’ views about separated-skill instruction changed during the year of coursework.
Data were collected from a questionnaire survey, interviews of students, and classroom observation. The results indicated
that the instructor provided a wide range of authentic materials and class activities, allowing students to interact with
texts and each other in a seamless integration of the four language skills. 90% of students recommended continuing to implement
the ISA in class for the next academic year. Survey and interview data revealed that under teachers’ class structures, students
changed their views on EFL instruction. 相似文献
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Ya-Chen Su 《Asia Pacific Journal of Education》2016,36(3):390-408
The purpose of this study is to evaluate linguistic and cultural issues around the status of English as a lingua franca and intercultural understanding as presented in one set of Taiwan's (English as a Foreign Language (EFL) high school textbooks. The methodology centres on the analysis of textbook content as categorized in three central themes: (1) the status of English language in international communicative settings; (2) intercultural/interpersonal understanding and diversity in English language texts; and (3) the linguistic and cultural effects of globalization on Taiwan and the world. Results found that the textbooks generally legitimate the hegemony of American English and British English as the only acceptable varieties or standard forms of the language. Furthermore, most of the texts are limited to specific aspects of societal issues and regions that represent influential cultures and their commercial commodities. The United States receives the most attention, followed by the United Kingdom and certain dominant Western European nations, where the image of ethnic and cultural homogeneity prevails in the texts. Most content focuses on reporting achievements, cultural practices, and perspectives of dominant groups in the United States, Great Britain, and Europe with little or no critical analysis of content. 相似文献
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为了研究飞秒激光参数对制备金膜表面光栅的影响, 设计搭建了飞秒激光干涉微加工实验装置, 经衍射光栅得到的两束相干光在金膜表面诱导出微光栅.借助原子力显微镜研究在不同的脉冲能量密度、脉冲个数、波长等条件下制备的光栅形貌, 测得光栅的周期和线宽.研究发现, 飞秒激光参数对光栅形貌的影响显著, 制备光栅的最佳波长为800 n... 相似文献
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