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도상화(Sanghwa Do),이병화(Byeonghwa Lee),채승희(Seunghee Chae),홍정표(Jungpyo Hong) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
This paper treats the method for reduction of torque ripple in Wound Rotor Synchronous Motor (WRSM) which is one of the alternative solution to Interior Permanent Magnet Synchronous Motor (IPMSM). The main reason for the torque ripple is mainly generated by the saturation of magnetic flux on only one side of pole shoes. Therefore, we propose a way to maintain average torque value and reduce the torque ripple by disperse the magnetic flux evenly using rotor slits and an asymmetric rotor. Optimization will be done by Response Surface Methodology (RSM). Design variables will be the length of slits and asymmetry length. An objective function will be torque ripple and a constraint is average torque value compared with the initial model. We validate it through finite element method (FEM).
도상학,Do, Sang-Hak 한국건강관리협회 1974 건강소식 Vol.2 No.11
인삼은 남형과 여형이 있는데, 남형은 하직, 여형은 하광이며, 남형은 여자에게, 여형은 남자에게 효험이 있단다. 고귀한 강장제로서 독보적인 지위를 확보하고 있는 인삼은 유감스럽게도 성적 흥분을 유발시키거나 최음효과를 나타내는 효능은 없다. 그러나 성기능 쇠약자의 치료 특히 유정의 치료에는 효험이 있다.
都象學 同德女子大學校 1977 同大論叢 Vol.7 No.1
The writer surveyed 149 families, 588 genera and 1069 species of medicinal plants distributed in Korea. Their scientific names, family names, Korean names, Chinese (Sino-Korean) names and drug names are given and the following are discussed: their parts used for medicinal purposes, their constituents, their medicinal value, the areas of their production, the quantity of the resources, their cultivation and poisnousness.
都象學 同德女子大學校 1983 同大論叢 Vol.13 No.1
The purpose of this study is to help prevent unnecessary toxic accidents due to people's ignorance about the nature of poisonous plants, The poisonous plants in Korea are classified into 206 species from 40 families, special attentions is given to determine their distributive location, the toxic parts, the degree of poison, their names as crude drug, and their quantity as natural resource.