• 헤리티지:역사와 과학
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• 제46권3호
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• pp.194-210
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• 2013

유지(油紙)는 선조들이 사용했던 생활필수품으로 종이에 기름을 먹인 전통적인 가공지이다. 그러나 현재 유지(油紙)에 대한 정확한 연구가 부족한 실정이므로 유지의 문헌사적 연구를 통해 유지의 기원과 명칭, 용도, 제작기법에 대하여 조사하였다. 고문헌으로 확인된 유지의 기원은 "고려도경(高麗圖經)", "고려사(高麗史)"의 내용을 통해 고려시대로 추정하였으나, "삼국사기(三國史記)"와 "일본서기(日本書紀)"에 나타난 기름과 종이의 기록으로 보아 7세기경부터 유지제작이 이루어졌을 가능성도 배제할 수는 없다. 조선시대는 "조선왕조실록(朝鮮王朝實錄)", "일성록(日省錄)", "승정원일기(承政院日記)" 기록을 통해 유지의 명칭과 사용법에 대해 조사하였으며, 의궤류와 "탁지준절(度支準折)" 등 기타 여러 분야의 고문헌 내용을 바탕으로 절가와 용도, 제작재료에 대하여 조사하였다. 조선시대의 문헌 조사결과 유지는 방수, 방습, 투명성 등의 특성으로 인해 각종 생활 용품으로 사용되었으며, 그 용도와 제작과정에 따라 다양한 명칭으로 불리기도 하였다. 본 연구를 통하여 조선시대 유지 관련 문헌조사가 이루어졌으나 전통 유지 복원에 관한 연구는 아직도 부족한 상태이다. 그러므로 현재 남아 있는 유지 유물조사연구와 전통 유지 샘플 제작 실험, 또한 유지를 제작하고 있는 장인들에 대한 사례 조사가 병행되어 전통 유지 연구가 이루어져야 할 것으로 생각된다.

• 한국전기전자재료학회논문지
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• 제15권11호
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• pp.1003-1008
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• 2002

In this paper, the estimation of lifetime with the various conditions of the interface between toughened epoxy and rubber which are consisting materials of underground power delivery system has been studied. After the measurement of the short time AC interfacial breakdown strength on macro interfaces at room temperature, the breakdown time at several voltages were measured under the constant voltages lower than the short time breakdown voltage. The long time breakdown voltage was calculated by using Inverse Power Law. Two types of interfaces was studied. One was the interface between toughened epoxy and EPDM(Ethylene Prorylene Diene Terpolymer). The other was the interface between toughened epoxy and silicon rubber. Interfacial pressure and roughness of interfaces was determined through the characteristic of short time AC interfacial breakdown strength. Oil condition was no oiled, low viscosity oiled and high viscosity oiled. High viscosity oiled interface between Toughened epoxy and silicon rubber had the best lifetime exponent, 20.69. and the breakdown voltage of this interface after 30 years was evaluated 19.27㎸.

• 한국실내디자인학회논문집
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• 제17호
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• pp.45-51
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• 1998

A purpose of this study was to investigate actual condition of the modern adaptation of interior elements(wall, floor, ceiling. door & window) in traditional house. The examined objects were 185 pictures of restaurants and cafe interior spaces from the 5 different monthly magazines between jan. 1993. to Dec 1997. The results of this study were as follows : 1. Mostly they were either partial adaptation from the original or partially transformed adaptation rather than entire adaptation of the original. 2. Of the traditional interior elements adapted in restaurants and cafe space only specific elements were being adapted. For example partial adaptation from the original were oiled paper flooring(Jangpan) plaster wall ceiling finish that left the rafters and beams exposed(Yondung-chonjang) and window or door frame which is vertical lattices accented with horizontal lattices grouped into three sections(Ttisal-mum) And partially transformed adaptation were oiled paper flooring rice papered (Hangji) wall Yondung-chonjang window or door frame of Wan character(Wanja-mun). 3, In regard to space the mostly adapted spaces were halls rather than rooms.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 추계학술대회 논문집 학회본부 C
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• pp.897-899
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• 1999

In this paper, the interfacial dielectric breakdown phenomenon of interface between Epoxy/EPDM (ethylene propylene diene terpolymer) was discussed, which affects stability of insulation system of power delivery devices. Specimen structure was designed by using MAGSOFT's FLUX2D based on the finite elements method. Design concepts is to reduce the effect of charge transport from electrode in the process of breakdown and to have the tangential electrical potential with the Epoxy/EPDM interface. AC interfacial breakdown phenomenon of was investigated by variation of interfacial conditions oil and temperature which are supposed to have influence on the interfacial breakdown strength. Interfacial breakdown strength was improved by spreading oil over interfacial surface. The decreasing ratio of the AC interfacial breakdown strength in non-oiled specimens was increased by the temperature rising and its of oiled specimens was not affected by temperature.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.220-220
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• 2000

In this paper, some non-interaction problems in tandem cold rolling mill are considered, which are required to control effectively a thickness of the cold .oiled strip. First, Interstand non-interactive compensate. (Interstand NIC) is designed for decoupling the interaction between stands. Next, a L2 optimization based pre-compensator is designed for decoupling the interaction between roll gap and strip tension in the stand. Finally, the effectness of the proposed decoupling methods is demonstrated via simulations.

• 한국공작기계학회논문집
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• 제13권3호
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• pp.98-103
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• 2004

Diesel engine offers superior fuel consumption than gasoline engine of equivalent capacity. For this reason, diesel engines are widely used in heavy duty transport applications. Specially, it has been many years that exhaust gases from gasoline automobile rather than from diesel is the major object concerned by Korea and other countries, and it is strongly required on the reduction techniques on harmful NOx, Soot, CO, He. Thus, this paper focused on the emission reduction and target for this paper is heavy-duty diesel engine equipped with power filter such as wet type air cleaner. In this paper, the performance, exhaust emissions(CO, THC, NOx, Soot) and noise of heavy-duty diesel engine were measured at maximum load condition and the range of 1,000∼2,200rpm. The smoke was measured at FAS(Free Accel Smoke) test mode.

• 건축역사연구
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• 제14권2호
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• pp.143-157
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• 2005

This study aims to analyze functions and characteristics of 'Cha-il(遮日)' which was used at ritual events(宮中儀禮行事) in the Joseon dynasty, Joseon dynasty had many ritual events related with O-Rae(五禮). Cha-il was almost used at important ritual events, especially at the congratulatory events. The congratulatory events(宮中宴享) are the representative events were held with many temporary install facilities(假設施設) in a palace. Cha-il was a kind of Korean traditional membrane structures. Cha-il was set up for cutting off interior space from sunlight and rain. In general, Cha-il was Consisted of Cha-il-jang(遮日帳:woven fabric), Cha-il-jook(遮日竹:bamboo column), some ropes, and fixing wares. In the congratulatory events, three types of Cha-il. were set up. Baek-mok-Dae-Cha-il(白木大遮日)was made of cotton cloth. Yu-Dun-Cha-Il(油芚遮日) was made of oiled paper or oiled cotton cloth. Man-Joen-Cha-Il(滿箭遮日) consisted of wooden structure. Baek-mok-Dae-Cha-il(白木大遮日)was set up on the most important area of stage for protecting from sunlight. Yu-Dun-Cha-Il was set up on less important area of stage for protecting from sunlight and rain. Man-Joen-Cha-Il was set up below Baek-mok-Dae-Cha-il for supporting and draining raindrops off. The results of this study were as follows; Functions of Cha-il were to protect ritually space from sunlight and rain, and to extend ritually space, and to reconstruct ritually space. Cha-il was the peculiar temporary install facility which differed from other countries.

• 가정과삶의질연구
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• 제16권4호
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• pp.167-182
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• 1998

The purpose of this study was to investigate actual condition of the modern adaptation of interior elements (wall floor ceiling door & window) in traditional house. The examined objects were 316 pictures of residential interior spaces from the 5 different monthly magazines between Jan. 1993 to Dec. 1997 The results of this study were as follows; 1. Mostly they were either parital adaptation from the original or partially transformed adaptation rather than entire adaptation of the original 2. Of the traditional interior elements adapted in residential space only specific elements were being adapted. For example. partial adaptation from the original were oiled paper flooring(Jangpan) rice papered wall (Hanji) a ceiling finish that left the rafters and beams exposed (Yondunt-chonjang) and window or door frame which is vertical lattices accented with horizontal lattices grouped into three sections(Ttisal-mun)And partially transformed adaptation were wood flooring(Chang-maru) rice apered wall(Hanji) Yondung-chonjang wind or door frame of Wan character(Wanja-mum) 3. In regard to space the mostly adapted spaces were bedrooms rather than living or dining rooms.

• 한국정보통신학회논문지
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• 제5권2호
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• pp.321-325
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• 2001

최근 이동통신의 발달로 좀더 효율적인 서비스를 제공하기 위하여 많은 연구가 진행되고 있다. 본 논문에서는 하나의 전압제어발진기로 두 가지 서비스를 가능하게 하는 양대역 전압제어발진기의 두가지 형태를 제시한다. 첫 번째 형태는 스위치를 이용하여 공진주파수만을 조절한 회로이고, 두 번째 형태는 독립적인 전압제어발진기 두개를 효율적으로 연결한 형태를 가진다.

• 한국의류학회지
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• 제33권12호
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• pp.1883-1896
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• 2009

이 논문은 조선후기 보자기에 적용된 다양한 장식 특성을 연구한 것이다. 보자기는 물건을 싸거나 음식을 덮는 등 일차적으로는 실생활에 활용하기 위한 실용적 목적으로 제작되었지만, 보자기 제작은 전래된 상징적 문양의 표현을 통한 현세적 기원의 행위이기도 했으며, 또한 조선의 엄격한 유교 윤리 하에서 여성의 창작 욕구가 자유롭게 발현된 생활 속 여흥의 일부이기도 했다. 한국의 보자기에는 조각 잇기, 자수, 회염, 인염, 오려내기 세공 등 다양한 장식 기법이 활용되었다. 조각 잇기 기법이 활용된 조각보에서는 조선 여인들의 절약습관이 돋보이는데 이는 특히 자원의 재활용을 중시하는 오늘날의 가치와도 일맥상통하는 바가 있다. 자수가 놓인 수보에서는 상징적 문양의 표현을 통한 여인들의 소박한 바램이 읽혀진다. 한국 보자기는 회염이나 인염으로 장식되기도 했는데, 이들은 한국 복식 유물에서는 보기 어려운 장식 기법들이다. 농담을 조절한 다양한 색채의 당채 기법이나 단일색의 먹물 채색, 여러 종류의 도안이 새겨진 목판을 이용한 인염 기법 등이 이용되었다. 음식물이 묻지 않게 하기 위해 때로는 기름 종이로 보자기를 만들기도 했는데, 이러한 식지보에는 오려내기 세공이 장식 기법으로 활용되었다. 오려내기 기법의 원리는 스텐실 염색과 비슷하여 이를 또한 섬유제품 디자인에 활용할 수도 있다.