Lyapunov 안정도 이론을 이용한 가변구조 모델 추종제어기 설계

안수관,박세승,박종국 慶熙大學校 材料科學技術硏究所 1989 材料科學技術硏究論集 Vol.2 No.-

The reference model is a simple double integrator, and the acceleration input for robot manipulator consist of a proportional and derivative controller for trajectory tracking purposes. The control algorithm is made by Lyapunov stability theory instead of S.S˙ < 0, as is usual in the current VSS controller. The simulation was performed to evaluate the performance of the proposed the VSMFC.

소규모 제조업에서 재해발생과 사업장 특성간의 관련성 분석

이건세,김형수,,장성훈,정최경희,오원기,최재욱,이관형,오지영 大韓産業醫學會 2006 대한직업환경의학회지 Vol.18 No.2

목적: 소규모 제조업 사업장의 재해 발생 유무에 따른 사업장 조직 특성을 비교하여 재해 발생과 관련된 요인을 사업장 수준에서 파악하고자 하였다. 방법: 한국산업안전공단이 실시한 2004년도 산업안전 보건 동향조사 자료 중 5인 이상 50인 미만 제조업 1,886개 사업장(가중치를 부여하여 추정한 모집단 사업장은 65,921개)의 재해(산재 및 공상, 경상 포함) 발생 여부와 사업장의 조직 특성(일반적 특성, 고용특성 및 산업안전보건 특성)간 다변량 분석을, 사업장의 일반적 특성은 지역, 산업형태, 업종 등이며, 고용특성은 전체 근로자중에서 생산직 근로자의 분포, 여성근로자의 분포, 1주일 평균 근로시간, 교대근무 등이며, 산업안전보건 특성은 안전관리자/보건관리자의 선임형태, 산업안전보건위원회, 노동조합, 매월 정기안전보건교육시간, 안전보건관리 규정, 안전보건활동 점수, 안전문화 점수 등이다. 결과: 다변량 분석결과 재해가 발생한 사업장이 갖는 특성은 다음과 같았다. 첫째, 사업장의 일반적 특성에서 지역별로는 경인권에 비해 전라권, 산업형태 면에서 원청에 비해 사외협력업체, 업종별로는 전자부품/통신에 비해 코크스/석유정제업, 목재/나무제품업, 음식료품, 조립 금속제품에서 위험도가 높았다. 둘째, 사업장의 고용 특성에서는 전체 구성원 중에서 생산직 근로자가 증가할수록 재해발생 사업장이 유의하게 증가하였으며, 여성근로자의 증가할수록 재해발생 사업장이 유의하게 감소하였다. 주당 근무시간이 증가할수록 재해 발생 사업장이 유의하게 증가하였으며, 교대 근무와 사업장의 재해발생과는 유의한 관련성이 없었다. 셋째, 사업장의 산업안전보건 특성에서는 안전관리자가 전임으로 근무할수록, 산안전보건위원회가 활발히 활동할수록, 노동조합이 설립될수록, 안전보건규정이 갖추어지지 않을수록, 정기보건교육시간이 많을수록, 안전문화수준이 낮을수록 재해발생 사업장이 유의하게 증가하였다. 결론: 소규모제조업에서 사업장의 조직 특성에 따라 사업장 재해율이 다름을 확인할 수 있었으며, 이는 산업재해의 예방을 위해서는 근로자 요인이외에도 사업장 수준에서의 관련요인에 대한 접근이 필요함을 의미한다. Objective: This study evaluated the relationship between injury occurrence and workplace organization in small-sized, manufacturing factories in Korea. Methods: Using data from the 2004 Occupational Safety and Health Survey in Korea, this study compared workplace organizational factors (general characteristics, employee characteristics and health and safety characteristics) with injury occurrence of 1,866 small-sized, manufacturing factories (65,921 population factories after weighting). General characteristics of factories comprised location, type and classification of industry. Employee characteristics comprised proportion of manual workers and female workers, average working hours per week and shiftwork. Health and safety characteristics comprised type of safety and health manager, committee for occupational safety and health, labor union, health and safety regulation, monthly health and safety training time, score of health and safety activity and score of safety culture. Results: The following characteristics of injury-occurrence in small-sized, manufacturing factories were determined by multivariate analysis. In terms of general characteristics, the risk of injury-occurrence was higher in Jeolla area than Gyeongin area in outside associate than other enterprises and in coke, refined petroleum products and nuclear fuel, wood and products of wood, food products and beverages and fabricated metal products, except machinery and furniture industries than television and communication equipment and apparatus industries. In terms of employee characteristics, injury-occurrence significantly increased in factories with greater proportion of manual worker and with a higher rate of working hours per week. But significantly decreased in factories with a higher proportion of female workers. In terms of health and safety characteristics, injury-occurrence significantly increased in factories with a self-appointed safety manager, with unorganized union, with a more active committee for occupational safety and health, with unimplemented health and safety regulation, with longer monthly safety and health training time, and with a lower score of safety culture. Conclusions: This study demonstrated that several factors of workplace organization were significantly related with injury-occurrence in factories. These findings are supposed to raise the need for making effort in workplace organization to improve injury prevention.

중국 도시주거의 공간구조에 관한 유형학적 연구

손세관 中央大學校 建設環境硏究所 1994 環境科學硏究 Vol.5 No.-

This study is about the spatial structure of traditional Chinese urban housing. The traditional form of housing in Northern China is thd courtyard house or the walled compound called Siheyuan. This basic concept of spatial organization seems rather simple but can be adapted to a great variety of situations, both physically and socially. There are three characteristics of the Chinese courtyard house in China past and present, and raise the question of whether such principles might be fitly applied in present cities. With its enclosed courtyard this type of house allows a relatively high density of building and constitutes an alternative to the questionable form of urban development in involving high-rise housing of our cities.

로보트 매니퓰레이터에 대한 강건한 적응제어기 설계

安秀寬,朴世勝,裵悛坰,朴鍾國 慶熙大學校 1989 論文集 Vol.18 No.-

In this paper a new adaptive control algorithm is derived, with the unknown manipulator and payload parameters being estimated online. In pratice, we may simplify the algorithm by not explicitly all unknown parameters. Futher, the controller must be robust to residual time - varying disturbance, such as stiction or torque ripple. Also, the reference model is a simple double integrator and the acceleration input for robot manipulator consists of a proportion and derivative controller for trajectory tracking purposes. The validity of this control is confirmed in simulation where two - link robot manipulator shows the robust performances in spite of the existing nonlinear interaction and unknown parameter changes.

도시형 한옥의 증개축에 관한 연구 : 서울시 가회동, 용두동, 제기동을 중심으로

손세관,김은하 中央大學校 建設環境硏究所 1995 環境科學硏究 Vol.6 No.-

The subject of this study is summarized as the expansion and renovation of urban traditional houses in Korea. As a traditional house form in urban settings, it has been evolved through times. To figure out its spatial changes, this study mainly employs the typological approach which enables to understand the evolutionary phases and the explain it as types. By way of analyzing the procedure of spatial evolution, this study also investigate the factors which caused the expansion and renovation. As a result, four factors of spatial changes are summarize, which is proved to be mostly coincided with those of general houses.

소형 임대아파트 내부공간 개선에 관한 연구 : 아파트 내부, 복도, 주동 내부공간을 중심으로

孫世寬,安美羅 中央大學校 建設環境硏究所 1995 環境科學硏究 Vol.6 No.-

This thesis aims to comprehend the spatial usage of permanent rental apartment houses and to evaluate how the residents of these feel about their living environment. To begin with, it is based on the belief that understanding their spatial needs enables to suggest more humane environment for comparably small-scale residential environment. Accordingly, 113 rental apartment houses located in Seoul district are investigated focusing on the spatial usage of both interior and exterior spaces. From this investigation on residents' spatial need and their spatial usage, the suggestions are made to maximize the efficiency of the space. For this purpose, the methodology of "Pattern Language" of Christopher Alexander is analyzed and applied to be results in 12 patterns appeared in this thesis.

우리나라 주상복합건축 주거부의 공간구성적 특성에 관한 연구 : 주거부의 외관형상과 공적공간의 위치를 중심으로

손세관,임경희 中央大學校 建設環境硏究所 2002 環境科學硏究 Vol.13 No.1

이 연구는 우리나라에 최근에 많이 지어지고 있는 주상복합 건물의 주거부의 공간구성상의 특성에 관한 연구이다. 이 연구에서는 우리나라에서 최근에 지어진 24개 사례의 주상복합 건축을 선정하여 그 내부 공간구성을 조사ㆍ분석 하였다. 그 결과 다음과 같은 결과를 얻었다. 첫째, 우리나라 주상복합 건축의 주거부의 평면 형상은 기존의 아파트와는 다르게 매우 변화가 많다는 것이다. 둘째, 기존의 아파트보다 환경적 질을 강화하기 위한 계획적 방법이 다양하게 사용되고 있다는 것이다. 셋째, 주택내에서 L-D-K의 위치의 변화가 상당히 발견되고 있다는 것이다. This study is on the residential part of the mixed-use buildings which are rapidly increasing in large cities of Korea. In this study the characteristics of spatial composition of floor plan of units ale analysed. The findings of this are as follows : Firstly, the outer shapes of unit-plan varies much showing a tendency of progressing livability. Secondly, there is a strong change in the location of L-D-K inside of housing. Thirdly, the public space the unit are not occupy center but corner on side of dwelling.

서울 주거지역내 주거블록의 공간구조에 관한 연구

손세관,신진희 대한건축학회 2003 대한건축학회논문집 Vol.19 No.4

This study is on the characteristics of spatial structure blocks of Seoul afterwards the modernized residential development has been take place in Seoul. In this study, residential blocks of Seoul are analysed focusing on the urban spatial structure and characteristics of house types. Five different areas are selected for case study; and each case represents different period anf house type. The Bomun built up with Korean urban traditional housing from 1930 to 1960's, Hwagok with large settlement, Mia, multi-family houses which has become the typical model of residential block in Seoul after mid 1980's, and Ch'ongdam in Kangnam as high-society houses which play an important role in differentiating residential block in Seoul. This study discusses the organization pattern of block-street-lots-house system, and its interactive relation to the type of house. Therefore, this study clarifies physical and spatial changes appeared on urban residential areas of Seoul, and suggests the relationship between part(house) and whole(spatial structure of residential block) of the city.

Polyethylene glycol 용액(Colyte^(R))을 복용한 후 발생한 Boerhaave 증후군 1예

이관행,기승석,김인숙,김민정,박인호,장세중,하지수,김응수 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Spontaneous esophageal rupture (Boerhaave's syndrome) is a rare case that require early diagnosis and treatment because of its high mortality. The oral administration of osmotically balanced polyethylene-glycol-based electrolyte preparation is a commonly prescribed preparation for cleansing in patients undergoing colonoscopy. Nausea, vomiting and abdominal pain are frequently seen, but serious adverse reactions are rare. Esophageal rupture secondary to severe vomiting, which occurred during colonoscopy preparation using polyethylene gIycoI(PEG) electrolyte solution is extremely rare and only few cases have been published in the literature. We report a case of spontaneous esophageal rupture after routine administration of the PEG before colonoscopy. 대장 정결을목적으로 PEG 사용 후 아주 드물게 발생하는 Boerhaave 증후군 1예를 경험하였기에 보고하는 바이다.

중앙대학교 건설대학 건축공학과

손세관,김양희 中央大學校 建設環境硏究所 1998 環境科學硏究 Vol.9 No.1

The purpose of this study is to present and analyze the general character-istics of spatial connection and division methods in Korean detached house through typological theory. It is focused on the house designed in the 1980s and 1990s. Korean houses go through great transformation in this period. The outcomes acquired by the analyses are summarized as follows. First , the most general connection method in Korean houses is to separate a house into several spatial masses and then connect them using intermediate spatial elements. Second, it has generalized that the living room takes the central position of the house. Third , the 3 most general division methods are the division of space by volume, the division by wall, and the division by function. Fourth , it has been generalized that the wall division method is the major spatial division method . Fifth, many Korean houses do not show any special division method. In these cases, the space is structured in free style according to its function.