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유봉선(Bong Seon Yu),조열(Youl Cho) 한국기초조형학회 2000 기초조형학연구 Vol.1 No.1
This thesis is reseach object to verify rational and systematical expression through visual perception of our enterprise symbol type. The sphere of research is based on diagram trademark registered in Patent Attorney`s Office Korean. The method of classification is analyzed into expression through visual perception. It is applied of the times and each types of industry that the classification by expression. Acceding to the analysis of symbol expression type, flowing conclusion was discoverd: First, the methods of expression through visual perception were introduced negative into mould of typical diagram 1950`s. We knew symbol was made of varied type in the second half of 1980`s. Second, we found ability of amusements in the symbol type. According to the experiment result, they felt friendship that expression can recognize in many meaning from one type. And they reply that it is impressive and interesting. Synthetically speaking, the expression of symbol is changing over. By reviewing its possibility of the formative element on the basis of figure and ground relationship expressed on the symbol, it is my wish to be of any help to the more scientific and effective study.
유봉선,Yu, Bong-Seon 한국정보처리학회 1994 정보처리논문지 Vol.1 No.4
정보신호계열을 초고속으로 전송하기 위한 디지틀 광전송 시스템이 대용량화, 경 제화됨에 따라, 효율적으로 순수 정보신호계열을 신뢰성있게 전송할 수 있는 초고속 광전송 시스템용 전송로 부호의 선택이 현시점에서 중요한 문제로 대두되고 있다. 따라서 본 논문에서는 지금 까지 제안된 2치 unipolar 전송로 부호들 중 고속(100Mb/s 이상의 전송속도) 광전송 시스템으로 적합한 전송로 부호들을 우선 선택하여, 선택한 전송로 부호들 간의 성능 평가를 전송로 부호의 요구조건들, 즉 최대 동부호 연속수, 전송지연시간, 클럭 상승률, 마크율, 회로규모, 전송로 에러 감시 및 전력 스펙트럼에 따라 상호 비교 분석 한 결과, mBIZ부호가 최적의 초고속 광전송 시스템용 전송로 부 호임을 밝혔다. At the present time, it is an important problem that we are to select a transmission line code for the very-high speed optical transmission system which can confidentially transfer the original information signal sequence efficiently, as it is to be the large capacity and the economization for the optical digital transmission system to transfer the information signal sequence at the very-high speed. Therefore, this paper is to select first the proper transmission line codes for the high speed(more than Mb/s) optical transmission system of the proposed two-level unipolar transmission line codes up to date, and to decide a mBIZ (m Binary with One Zero insertion) code as an optimal transmission line code for the very-high speed optical transmission system, resulting from analyzing the performance at the requirements of the transmission line code, such as the maximum consecutive identical digits, the transmission delay time, the increasing rate of clock, the mark rate, the circuit complexity, the supervision of transmission line error, and power spectrum among the selected transmission line codes.
석고의 축조재료 활용을 위한 온도조건에 따른 함수비 변화와 다짐 특성
서동욱,유봉선,Seo, Dong-Uk,Yu, Bong-Seon 한국농공학회 2012 한국농공학회논문집 Vol.54 No.3
As a large construction such as highway, dam, reclaimed land etc. increase in number more and more, large amount of fill materials are required. It is needed to utilize a gypsum which is a by-product yielded from chemical plants, as fill materials. Though some studies have been conducted to know a engineering characteristic of gypsum, it is not certain that water contents were checked at $45^{\circ}C$ dry oven. This study proposed that water contents must be measured at $45^{\circ}C$ dry condition because gypsum is changed to other types as a dry temperature. As the results obtained by compaction tests, it is found that moisture of gypsum in compaction must be within -5.0~2.5 % O.M.C (optimal moisture content).