• 제목/요약/키워드: 이초

검색결과 7건 처리시간 0.023초

좌초선의 이초 계획 수립을 위한 정적 평형 기반의 자세 계산 방법 (A Calculation Method of the Ship's Posture Based on the Static Equilibrium for the Refloating Plan of the Stranded Ship)

  • 이우용;함승호;구남국
    • 대한조선학회논문집
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    • 제59권1호
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    • pp.55-63
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    • 2022
  • A stranded ship means a ship which is stuck on a rock or a seabed, and cannot move by itself. The lightening plan is required to refloat the stranded ship. For this, we have to understand the forces and moments acting on the ship, which is composed of the gravity, buoyancy, and reaction force due to the touched area below the ship. This study defines those forces and moments, and proposed the calculation method to find the posture based on the static equilibrium. It is divided by two steps. In the first step, the magnitude and position of the reaction force are obtained based on the known information such as initial trim angle and draft of the ship. In the second step, the reaction force and the posture is calculated due to the three cases such as addition, reduction, and movement of the cargo. It is applied to three examples in order to calculate the reaction force, and the trim angle due to changes of the cargo. As a results, we successfully obtain the magnitudes and positions of forces acting on the stranded ship and to check the posture of the stranded ship.

Characteristics of a-IGZO TFTs with Oxygen Ratio

  • 이초;박지용;문제용;김보석
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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    • pp.341.1-341.1
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    • 2014
  • In the advanced material for the next generation display device, transparent amorphous oxide semiconductors (TAOS) are promising materials as a channel layer in thin film transistor (TFT). The TAOS have many advantages for large-area application compared with hydrogenated amorphous silicon TFT (a-Si:H) and organic semiconductor TFT. For the reasonable characteristics of TAOS, The a-IGZO has the excellent performances such as low temperature fabrication (R.T~), high mobility, visible region transparent, and reasonable on-off ratio. In this study, we investigated how the electric characteristics and physical properties are changed as various oxygen ratio when magnetron sputtering. we analysis a-IGZO film by AFM, EDS and I-V measurement. decreasing the oxygen ratio, the threshold voltage is shifted negatively and mobility is increasing. Through this correlation, we confirm the effect of oxygen ratio. We fabricated the bottom-gate a-IGZO TFTs. The gate insulator, SiO2 film was grown on heavily doped silicon wafer by thermal oxidation method. a-IGZO channel layer was deposited by RF magnetron sputtering. and the annealing condition is $350^{\circ}C$. Electrode were patterned Al deposition through a shadow mask(160/1000 um).

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중국 퍼스트레이디 펑리위안의 패션이미지와 디자인 특성 (Fashion Image and Design Characteristics of Chinese First Lady, Peng Liyuan)

  • 이초;하승연
    • 한국의상디자인학회지
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    • 제18권4호
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    • pp.31-46
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    • 2016
  • This study would inquire into the fashion image and design characteristics of Peng Liyuan, the first lady of China that has a mighty influence on the recent global economy and consumption. For this purpose, first, this study investigated the fashion image of Peng Liyuan according to the role which she performs as a first lady and analyzed how the fashion image appears and changes by year and role type. Second, this study analyzed the design characteristics of Peng Liyuan's fashion image, focusing on the silhouette, fashion items, coordinated items, colors, and textile patterns. The scope of the research was limited to the dresses worn by Peng Liyuan from March 14, 2013 to September 30, 2015. The fashion image of Peng Liyuan changed from classic and elegant image to modern image till 2015, and she reduced ethnic image and emphasized romantic image. In international diplomatic visits, she tried to express the confidence and potential of China through classic, ethnic and modern image, while in formal events of China, she showed an intention to communicate with the Chinese public with soft intimacy through elegant and ethnic images. As design characteristics in her fashion image, she flexibly changed her fashion image by the composition of silhouettes and items, which could cover her mid-life body type and made use of the form and detail of Chinese traditional qipao, appropriate coordination of scarves and brooches, the combination of chromatic color and achromatic color, appropriate uses of textile patterns and the delivery of China's image according to place and purpose. The study of Peng Liyuan's fashion image has significance to understand the fashion trend as a role model of fashion for the Chinese people and can help the domestic fashion industry that aims at the Chinese market in the future by predicting Chinese women' Fashion trend.

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안평대군 비해당(匪懈堂) 원림의 의미경관과 조경문화 (An Interpretation of the Landscape Meaning and Culture of Anpyung-Daegun(Prince)'s Bihaedang Garden)

  • 신상섭;노재현
    • 한국전통조경학회지
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    • 제29권1호
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    • pp.28-37
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    • 2011
  • 안평대군(1416-1453)의 비해당 원림을 대상으로 집현전 학사들이 차운한 연작시 '비해당사십팔영'의 경관 어휘소를 분석하여 조선 전기 사대부정원에 담긴 의미경관 및 정원문화를 해석한 연구결과는 다음과 같다. 첫째, 안평대군이 인왕산 기슭에 비해당 원림을 가꾸면서 제영한 '사십팔영'의 소표제는 동식물의 태생과 형태, 시간과 공간, 그리고 의미와 상징성 등을 음양의 접합과 같이 대비적으로 연작하는 규범성을 보여주고 있으며, 경물 중 38개는 식물소재를, 8개는 점경물과 동물을 대상으로 하고 있다. 둘째, 정원 명칭을 원림(園林), 정제(庭除), 임천(林泉), 화원(花園)등으로, 뜰의 밀도와 위치에 따라 공정(空庭)과 만원(滿園), 중정(中庭)과 후원(後園), 원락(院落: 안뜰)과 별원(別院) 등으로 세분하여 표현하고 있다. 한편, 누정과 수경시설은 물론 디딤돌과 계단, 그늘시렁, 평상, 화분, 석가산, 괴석, 우물, 롱(籠)(새장), 꽃밭(오(塢)), 생울타리 등이 작정 소재로 다양하게 도입되고 있으며, 뜰 관리자를 사화(司花), 정원수 심기와 가꾸기를 재배(栽培), 연못 속 섬을 부구(浮丘), 축소 경관을 조성하는 축지(縮地) 등의 명칭을 사용하였다. 셋째, 바깥뜰에는 버드나무를 심었고, 서재 앞에 매화를 심어 대나무숲길로 이어지게 했으며, 화원을 만들어 작약, 동백, 모란, 배롱나무 등을 심었다. 점경물로는 이끼 낀 괴석, 작은 석가산, 유리석과 화분을 두었고, 장방형 연못을 조성했으며, 뜰에는 사슴, 꽃 비둘기, 금계, 학 등을 사육했다. 넷째, 경물을 상징화하여 (1) 군자와 절개, (2) 부귀영화, (3) 신선 풍류, (4) 은일과 은둔, (5) 기타 효행과 덕, 성찰 등 의미경관을 취했다. 즉, 기화이초와 진금기수가 어우러진 원림을 조성하여 격물치지의 교훈, 은일과 은둔문화의 대입, 불로장생과 무릉도원을 염원하는 선경처의 구축 성향 등 의미경관 요소가 다양하게 표출되고 있다. 다섯째, 경관을 취하는 기법으로 앙경(仰景)과 부경(俯景) 그리고 저경(低景), 외부경관의 차경, 꽃을 그윽하게 바라보며 의미경관을 즐기고 (유경(幽景)), 꽃구경의 흥취를 돋우며 노닐 수 있는 요정(遼庭), 꽃가꾸기 취미인 화색향벽(花色香僻) 등이 발견되고, 사계절과 시간에 따라 감흥을 달리하며 즐기는 시어가 추출된다.