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辛昌薰 瑞逸專門大學 1985 論文集 Vol.5 No.-
When the bending moment is inflicted on a beam, it has been deflected inwards in the early phases and, as soon as the moment reaches a certain degree, all of a sudden it is deflected toward a lateral direction and gets to revolve at the same time. Finally it loses the capacity for endurance of load. This, a sort of buckling penomenon, is generally called 'lateral-torsional buckling' because of being accom-panied by both bending and torsion. The study on the inelastic, 'lateral-torsional buckling' of a beam are very prevalent. In order to precisely expect the behavior of a beam considering the residual stress, early displacement, and the eccentri cload, general relations of the sectional shape and the strength of lateral-torsional buckling have to be defined. But, even in simple sections of beam such as I-shape and H-shape, these relations are not clearly defined. It is to propose a useful for-mula of design enough to make these relations clear which is a important task in the study on the inelastic lateral-torsional buckling. This paper is supposed to pro-pose such a useful formula of desing which is resulted from the comparative ana-lysis of existing formulas and the strength of lateral-torsional buckling. The results of this analysis show us the formula of lateral-torsional buckling independent upon the yield stress and the shape of section.
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신창훈,이정환,이영수,장호창,백영순 한국자원공학회 2012 한국자원공학회지 Vol.49 No.4
Unconventional gas development including shale and tight gas is one of the main businesses focused in global natural gas development industry. Recently, new projects and plans on global shale gas development are announced successively starting from north America. It is very natural that the nation having high demand and high dependence on overseas energy resources, like us, has high interests about the new energy resources development. Hence, in this study, we investigated and summarized the technical features of shale gas and core technical indicators for shale gas development business which plays the role of locomotive in global oil and gas development industry. And we looked into global trend of natural gas industry and outlook on shale gas development. Finally, we surveyed and examined global geographical distribution and regional features and trend of shale gas development by major countries or regions. Through this study, we tried to assist Korean enterprise's aggressive participants and setting up shale gas development businesses plans in a future by understanding the characteristics of shale gas development business and the industrial prospect and regional characteristics. 셰일과 치밀가스 등 비전통가스 개발은 최근 세계 천연가스 개발 산업에 있어서 가장 주목받는 분야 중의 하나이다. 최근 북미를 기점으로 중국, 유럽 등에서 셰일가스 개발의 시도와 계획이 속속 발표되고 있다. 우리나라와 같이 에너지자원의 수요와 해외의존도가 모두 높은 국가에서 새로운 에너지자원의 개발에 대한 관심과 관련 산업의 적극적 참여는 매우 중요하다. 이에 본 연구에서는 최근 세계적인 자원개발 산업 전반의 변화를 견인하고 있는 셰일가스의 특징과 셰일가스 개발사업의 추진을 위한 핵심적 기술지표를 검토, 요약하였다. 다음으로 천연가스 산업의 세계적 동향과 향후 셰일가스의 개발 전망을 살펴보고, 최종적으로 셰일가스의 지리적인 분포현황과 주요 국가 또는 지역별 특징 및 산업동향을 조사, 분석하였다. 결과적으로 본 연구에서는 셰일가스 개발산업의 특징을 이해하고, 향후 지역별 부존 현항과 산업 전망을 제시함으로써 우리기업의 적극적 참여 및 추진방향의 수립에 일조하고자 하였다.
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辛昌薰 瑞逸工業傳門大學 1983 論文集 Vol.4 No.-
It is the structural members of column that acted centroid axis of compressed force. The column of 2 axial symmetry or unsymmetry may develop wave formations when they are compressed. This is called the buckling. Therefore, the buckling is a very important to analysis of structural member. It can be seen that only a few studies have been made of the elastic buckling. The subject of this paper in which a general method of analysis is developed that it can be applied to the elastic behavior of structural column with vertical load. The results are compared with a numerical solutions of the same problem.
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신창훈,이주신 청주대학교 산업과학연구소 2005 産業科學硏究 Vol.22 No.3
In this paper, night pedestrian tracking algorithm using hue parameter was proposed. Night pedestrians are detected by using difference image method and integral projection method to background image and objects image only with hue area. Hue information of the detected pedestrian area is segmented into 24 levels from 0˚ to 360˚. The three hue levels with highest distribution and the distances among these levels are used for the identity distinction feature parameters of pedestrians. To examine proposed algorithm in this paper, images of pedestrian are obtained by setting up camera at different in building. The simulation results of identity distinction show that it is possible to distinct the identity a distance between segmented levels of a hue distribution chart.
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신창훈,이주신 한국정보통신학회 2004 한국정보통신학회논문지 Vol.8 No.5
본 논문은 조도, 형태, 배경의 변화에 강인한 다중 비디오카메라에서 색 정보를 이용한 보행자 추적에 대하여 제안한다. 제안된 방법은 비디오카메라로부터 입력되는 영상의 색조만을 이용하여 배경영상과 물체가 존재하는 영상에서 차영상 기법과 가산투영 기법을 사용하여 이동물체를 검출한다. 검출된 이동물체 영역의 색조는 0도부터 360도 사이에서 15도씩 24단계로 분할된다. 검출된 이동물체 영역의 색조 분포도를 구한 후, 가장 높은 분포를 갖는 3개의 색조 레벨과 3개의 색조 레벨 사이의 차를 이동물체의 특징파라미터로 사용하였다. 제안된 방법의 유용성을 증명하기 위하여 조도와 형태의 변화가 발생한 보행자 영상과 조도, 형태, 배경의 변화가 발생한 보행자 영상을 이용하여 보행자를 감시한 결과 카메라에서 검출된 특정사람의 색조 분포 레벨과 색조 레벨 사이의 차는 2레벨 이하로 유지함을 보였고, 제안된 특징 파라미터로 특정사람이 자동 추적감시 됨을 확인하였다. In this paper, the interesting moving objects tracking algorithm using color information on Multi-Video camera against variance of intensity, shape and background is proposed. Moving objects are detected by using difference image method and integral projection method to background image and objects image only with hue area, after converting RGB color coordination of image which is input from multi-video camera into HSI color coordination. Hue information of the detected moving area are segmented to 24 levels from $0^{\circ}$ to $360^{\circ}$. It is used to the feature parameter of the moving objects that are three segmented hue levels with the highest distribution and difference among three segmented hue levels. To examine propriety of the proposed method, human images with variance of intensity and shape and human images with variance of intensity, shape and background are targeted for moving objects. As surveillance results of the interesting human, hue distribution level variation of the detected interesting human at each camera is under 2 level, and it is confirmed that the interesting human is tracked and surveilled by using feature parameters at cameras, automatically.
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