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순도를 달리한 알루미나 세라믹스의 마멸특성에 관한 연구

  • 변상기;김형자;전태옥;박흥식
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 1993.12a
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    • pp.92-99
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    • 1993
  • 지금까지의 세라믹스의 마멸실험은 각종 세라믹스의 재질을 달리한 경우의 제특성을 규명하여 왔지만 전자, 기계부품 및 자동차부품 등의 구조용세라믹스로 널리 사용되는 순도를 달리한 알루미나 세라믹스의 마멸 겅동에 대한 연구는 아직 이루어지지 않고 있는 실정 이다. 따라서 본 연구에서는 저가격으로 가장 널리 이용될 가능성이 있는 순도를 달리한 알루미나 세라믹스의 마찰, 마멸거동을 상세히 조사하여 각종 기계부품 및 자동차부품의 tribology 설계의 기초자료를 제시하는 것을 목적으로 하였다.

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Current Status and Practices of 'Dali Village Farm Music' (울산달리농악의 연행 현황과 판제)

  • Choi, Heung-Kee;Choi, Ho-Gon;Oh, Hyun-Jung
    • (The) Research of the performance art and culture
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    • no.39
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    • pp.835-861
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    • 2019
  • Ulsan was selected as an industrial and industrial city, a leading city of Korean economic development in the 1960s, and it was rapidly changed social environment with the influx of many labor population. This change has had a great impact on the traditional customs of the region, and the traditional intangible culture has disappeared or disappeared, which requires urgent protection of intangible cultures compared to other regions. This study suggests the current situation to restore the agricultural music made up of the three-time customs recorded in the 1930s in Ulsan Dali area. The research method is literature research and field research. First, the literature analyzes the farming music in connection with the farming work performed in the Ulsan Dali area in 1936, and secondly, The field survey was based on the current situation of restoring farm music at the Nam-gu Cultural Center in Ulsan. The results of the research were observed in the Ulsan area, which has disappeared rapidly. In addition, it revealed the status of being handed down from 'Kim Dal-oh', a traditional farmer who worked at Ulsan Cultural Center, to 'Kim Se-ju', who is trying to restore the farm music.

우리나라 동굴의 일반적 특성

  • 홍시환
    • Journal of the Speleological Society of Korea
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    • v.5 no.6
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    • pp.10-15
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    • 1980
  • 동굴은 그가 위치하는 주위환경에 따라 그 특성이 달리 나타난다. 석회암지역에서 석회동굴이 형성되고 화산지역에서 용암동굴이 형성되듯이 달리 나타난다. 더구나 석회동굴은 지질구조와 밀접하게 관계되고 있는데 지질구조선에 따라 동굴은 발달한다.(중략)

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「건축사 특별 검사원 제도」란 기고를 읽고

  • Lee, Bong-Chun
    • Korean Architects
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    • no.1 s.405
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    • pp.80-81
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    • 2003
  • 건축사지 2002년 12월호의 최찬환 교수 기고문 중 일부 이해를 달리하는 부분의 견해를 밝힙니다. 이는 문제를 보다 구체화하고 명확히 함으로써 향후 바른 방안을 찾기 위함으로 달리 논지를 폄훼하거나 힐난코자 함이 아님을 분명히 합니다.

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The study of effects of Vandalism as a design variance on Users (사용자 측면에서의 디자인 변수로 작용하는 반달리즘 -Vandalism에 관한 연구)

  • 최성운;김경배
    • Archives of design research
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    • v.15 no.4
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    • pp.33-46
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    • 2002
  • The present times is rapidly growing and changing. As both an industry and a social legislation are running after a generality, relatively the number of people who are out of it is gradually increasing. Those people are getting skeptical about their positions as well as their existences, so that a social deviant phenomenon has been continuously arising by themselves in public and private area. It is the Vandalism . People are often exposed to this Vandalism which is occurring around their life. Accordingly this study analyzed cause-and-effect Vandalism. As a means of impediment against the progressing Vandalism in design process, the study as been developed by approaching to an ergonomics design, a simple shape design (minimalism), a semantic design, a re-useful design. As a result, it comes to the fact that the Vandalism from the view of design is caused by a lack of ergonomics and user-interface, a failure of simple structure, a complication of excessive functions. Furthermore, it comes to the conclusion that industrial design is playing an important role in the contribution of social development, to create a design obstructing the vandalism will bring development of sound society.

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효모에 있어 성 pheromone정보의 전달기구에 관한 연구

  • 정영기
    • The Microorganisms and Industry
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    • v.15 no.1
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    • pp.3-9
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    • 1989
  • 효모의 생활환에서 보면, 1배체세포는 접합형을 달리하는 양세포사이에서 성접합에 의한 2배체세포를 형성하여 다시 새로운 세대에 이행한다. 이성적세포융합은 2종의 세포사이에서 행해지는 특이성이 매우 높은 반응에 기인하고 있기 때문에, 양 세포간의 관계는 다세포와는 달리 단순하다는 점이 연구재료로서의 이점으로 들 수 있겠다. 이러한 이점을 살려 얻어낸 정보전달기구를 해명하기 위한 몇가지 결과를 소개한다.

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Effects of Eucommia ulmodies Oliver Tea Extract on aluminum Accumulation Rate and Tissue Function in Aluminum-administered Rats (두충차 추출액이 알루미늄 투여 흰쥐의 알루미늄 축적률과 각종 장기 기능에 미치는 영향)

  • Han, Sung-Hee
    • Journal of the Korean Society of Food Culture
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    • v.25 no.6
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    • pp.839-846
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    • 2010
  • This study was designed to investigate the effects of Korean Eucommia ulmodies Oliver tea extract on aluminum administered rats. Forty-eight male Sprague-Dawley rats (100${\pm}$10 g) were divided into the following six groups; control group, 3% E. ulmodies tea extract group, 1,000 and 2,000 ppm aluminum ($Al_2(SO_4)_3$ in distilled water) groups, and 1,000 and 2,000 ppm aluminum plus 3% E. ulmodies tea extract groups. The aluminum content in the rat tissues of the aluminum administered group was lower than that in the rat tissue of the aluminum group administered 3% E. ulmodies tea extract. Asparate aminotransferase and alanine aminotransferase levels increased in the aluminum-administered group but were lower in the 3% E. ulmodies tea extract group. Lactate dehydrogenase was lower in the 3% extract E. ulmodies teaaluminum group than that in the aluminum group. Cholinesterase was higher in the 3% E. ulmodies tea-aluminum group than that in the aluminum group. Plasma renin activity levels increased in the aluminum administration group, compared with the aluminum plus 3% E. ulmodies tea group. Plasma aldosterone levels increased in the aluminum administration group compared with the aluminum plus 3% E. ulmodies tea group. These results suggest that an extract of E. ulmodies tea in water has lowering effects on the accumulation of aluminum. It is believed that the E. ulmodies tea had some protective effects in the aluminum-administered rats, but the mechanisms remain obscure.

Sensory Properties and Viscosity of Bechamel Sauce by Cooking Methods and Ratio of Raw Materials (조리 방법과 재료 배합비에 따른 Bechamel Sauce의 특성)

  • Oh, Chan
    • The Korean Journal of Food And Nutrition
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    • v.13 no.4
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    • pp.307-311
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    • 2000
  • Sauces are various combination of ingredients mixed together, usually cooked, and in some stage of liquidity. Sauces are used to enhance the flavor of food dishes and to hold ingredients together while a food dish is being cooked. A cooked sauce is combination of a fat, thickener, and liquid. The degree of thickness of the sauce will vary with the proportions of the ingredients. the gelling characteristics of the thickener, and the length of the cooking time. The purpose of this study was to investigate the sensory properties and viscosity of a medium Bechamel sauce differing from cooking methods and ratio of raw materials. Objective evaluation was done by viscometer and line spread chart. Sensory evaluation was done by a panel of 8 judges majoring in food and nutrition. Viscosity of Bechamel sauce was decreased by increasing the amount of milk. Spreadability was increased by increasing the amount of milk, Vice versa. As a result of the sensory evaluation for Bechamel sauce made with various levels of milk, Bechamel sauce having mixture ratio of 1 butter, 1 flour, and 17 milk was the most preferable. Sauteing onion with butter was the most desirable method.

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Representation of Translucent Objects using Multiple Projection Images for Real-time Rendering (시점을 달리한 여러 장의 투영 영상을 이용한 반투명 재질의 실시간 렌더링)

  • Lee, Jae-Young;Kim, Kang-Yeon;Yoo, Jae-Doug;Lee, Kwan-H.
    • 한국HCI학회:학술대회논문집
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    • 2006.02a
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    • pp.878-883
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    • 2006
  • 반투명 물체(Translucent Object)는 불투명한 물체와는 달리 물체 내부에서 산란이 일어난다. 반투명 물체의 한 표면(Surface)을 렌더링하기 위해서는 그 표면의 정규 벡터뿐만 아니라 그 표면의 주변 기하 정보가 필요하다. 그러나 그래픽 하드웨어 구조는 반투명 물체의 실시간 렌더링의 구현에 많은 제약을 준다. 3D 기하 정보 대신에 라디언스 맵(Radiance map)과 깊이 맵(Depth map)과 같은 투영 영상(Projected Image)을 기반으로 하는 영상 공간 접근 방법(Image Space Approach)을 사용함으로써 GPU 상에서 반투명 재질을 실시간으로 표현할 수 있다. 본 논문에서는 영상 공간 접근 방법(Image Space Approach)의 연장선에서 시점을 달리한 여러 장의 투영 영상을 이용함으로써 기존의 한 장의 투영 영상만을 이용한 방법이 가지고 있는 가시성 한계점을 해결한다. 또한 복수 투영 영상의 이용에 따른 계산량 증가에 의해서 손실된 프레임 속도(Frame Rate)에 대해 분석한다.

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Visual Fatigue Caused by Dolly shot in Stereoscopic Images (입체영상에서 달리샷이 주는 시각 피로도)

  • Kwon, O-Young;Seo, Chang-Ho;Ko, Min-Woo;Youn, Joo-Sang;Seo, Jin-Seok;Oh, Sei-Woong
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2015.01a
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    • pp.197-199
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    • 2015
  • 3D 입체영상 촬영에서는 기존의 2D 영상과 다르게 깊이영역에 대한 시청자의 시각 피로에 주의해야 한다. 입체영상 촬영단계에서 시청자의 불편함을 최소화하기 위해 제작자들은 2D 촬영 방식과는 다르게 안정적인 카메라 촬영기법만을 사용한다. 본 연구는 입체영상 제작자들이 안전하게 다양한 촬영기법을 활용할 수 있도록 도움을 줄 수 있는 가이드라인 제작을 위해 시작되었으며, 그 결과의 일부로 본 논문에서는 촬영기법 중 달리샷에 대한 시각 피로도를 보여주고자 한다.

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