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김진수(Jin-Soo Kim),조성옥(Seong-Ok Cho) 한국인체미용예술학회 2013 한국인체미용예술학회지 Vol.14 No.1
This study has attempted to analyze changes in the ginyeo (officially sanctioned Korean female entertainers) tremeori (up-style) among hairstyles which play an important role in forming personal image. To adequately understand hairstyles during the Joseon period, this study has investigated the characteristics of up-styles during the Joseon period through analysis of literature records, genre painting and previous studies. According to analysis of the components of hairstyles, the ginyeo hairstyle has a dynamic feature which emphasizes a certain direction. In particular, its asymmetrical structure represents individual personality. According to analysis of the formative characteristics of the hairstyle from a modern perspective, the up-style was distinctive in length, width and depth. In terms of the structure of the hairstyle, large and small points in both soft and rough textures were repeatedly weaved in using braiding techniques, and a long straight line was formed. The hair was then rolled to make a beautiful, rich curve. In fact, the bun itself was very aesthetic thanks to a large scale and gorgeous patterning. Based on the contemporary and cultural background of ginyeo and the development of beard-hair style during the Joseon period, the myeongbu hairstyle developed in symmetry. Development in the ginyeo hairstyle has also been confirmed in this study.
저층 트롤에서 3차원 위치를 이용한 만곡형 전개판의 영각 추정
고광수 ( Gwang Su Go ),조봉곤 ( Bong Kon Chol ),배재현 ( Jae Hyun Bae ),조성옥 ( Seong Ok Cho ),원성재 ( Sung Jae Won ),윤홍근 ( Hong Keun Yoon ),박해훈 ( Hae Hoon Park ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.1
The angle of attack of a cambered otter board in a bottom trawl was estimated using a three-dimensional semi-analytic treatment of a towing cable (warp) system that was applied to the field experiments of a bottom trawl obtained by the Scanmar system. The equilibrium condition of the horizontal component and vertical component of forces was used to the three forces acting on the otter board in the horizontal plane. Those forces were the force on the warp at the bracket, hydrodynamic lift and drag forces on the otter board and the force on the hand rope attached just behind the otter board. Also the equilibrium of moment about the front edge of the otter board was used to find out the angle of attack of the cambered otter board. When the warp length was 120m and 180m long and the towing speed was between 1.23 and 1.90 m/s, the estimated angle of attack of the cambered otter board was ranged between 26.1° and 29.6°, respectively, though the maximum lift force was at the angle of attack 22.6°. The angle of attack of the otter board was tended to increase weakly with the longer length of warp (180 m) at the same towing speed in the experiment.