• 전력전자학회:학술대회논문집
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• 전력전자학회 2010년도 하계학술대회 논문집
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• pp.232-233
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• 2010

This paper investigates occupational exposure to time-varying magnetic field generation in high power rectifier systems. Two different kinds of high power rectifier systems of 25kA are modeled and analyzed. The performance is compared and evaluated on the basis of exposure guidelines from ICNIRP. In order to focus on the qualitative effect of rectifier operation, the mechanical structure of current carrying conductors is simplified as infinite long bus-bar model and low frequency harmonic contents up to 65kHz are considered. Thyristor rectifier generates a significant amount of low frequency magnetic field harmonic contents both at ac and dc side of rectifier infringing the limit from ICNIRP. The multilevel rectifier-IGCT type has almost negligible field generation from ac input side and smaller harmonic contents in dc load side complying with ICNIRP guideline. This remarkable advantage of multilevel rectifier-IGCT type can lead to very simple site layout design for installation and cost-effective compliance to guideline of occupational exposure against magnetic field.

• 한국문헌정보학회지
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• 제35권1호
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• pp.229-248
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• 2001

본 연구에서는 지역주민들의 의료질문에 의학정보 서비스를 제공할 수 있는 공공도서관 의학정보 사이트의 모형을 개발하고자 한다. 이를 위하여 기존 의학정보 사이트 7개를 선정하고, 이들에 대하여 웹사이트 개발과정인 기획, 분석, 설계, 구현, 홍보, 혁신의 6단계를 활용하여 인터페이스, 정보원 구성, 기능적 측면에서 분석하는 연구방법을 채택하였다. 분석 결과를 기초로 모형을 제시하고 웹사이트를 구현하였다. 본 연구결과는 의학정보서비스의 비전문가가 의학정보사이트의 인터페이스와 주제정보를 효율적으로 파악할 수 있는 유용한 방법론을 제시할 것이다.

• 한국실내디자인학회논문집
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• 제15권4호
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• pp.55-63
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• 2006

The purpose of this study is to analyze the characteristics of the church architecture by Alvar Aalto. General features of Aalto's architecture are the result of accommodating Modern architecture with regional qualities of Finland. The church would be the best example for understanding his architecture because he designed most of his churches in the prime of life. He established architectural types in his 30s through Viipuri public library and Saynatsalo town hall. He developed these types and applied them to his whole design. His type acts as a principle of configuration of his church architecture rather than a copy of form and shows the characteristics in the field of building layout, dynamic space and the effective use of light. Therefore, Aalto's church architecture can be recognized as the representative of Modern Finnish architecture in that they developed the meaning of their specific context including site, region and cultural tradition without losing the concept and technology of Modern architecture.

• 한국주거학회논문집
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• 제15권1호
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• pp.205-214
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• 2004

The intent of this study is to investigate the current situations and planning implications of elementary schools in urban housing blocks, and to propose the planning and design guidelines for them. The premise of this research is that an elementary school should function as a communal facility, shared by its community, so called open-school. 32 schools in three new towns were selected as sample cases and they were closely surveyed in terms of their site planning issues in residential blocks, and three sample open-elementary schools were analyzed in a comparative manner for finding their roles and functional fulfillment as a communal facility in the neighborhoods. Based on the findings, several planning principles and design techniques or devices are suggested for the utilization of elementary schools by local residents, mainly making issues of location, relationship to other facilities and open spaces in residential blocks, access, apartment layout, school building and outdoor spaces, and open program.

• 한국주거학회논문집
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• 제17권6호
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• pp.19-26
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• 2006

Along with the development of creative building design ideas, how to effectively sign design concepts is also an important consideration on environmental design. The research goals established in order to solve these problems are to develop structures of sign design and analyze the cases of it. This paper explains structures of sign design in two ways: the compositional elements of signs and the relationships of visual perception. Among various relationships among sign design compositional elements this study uses relationships based on the Gestalt theory, the balance theory by Rudolf Arnheim, and the optical away theory by Gibson. The design principles investigated on the basis of the visual perception theories include the relationships between compositional elements and background space, visual weight balance, horizontal and vertical balances, grouping, and visual layout patterns

• 국제초고층학회논문집
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• 제1권4호
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• pp.255-269
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• 2012

Tall buildings' implementation has often lacked urban design and architectural guidance. There are many examples of tall buildings that have been inappropriately located, designed, and built, and consequently dissatisfaction with high-rise development is wide-spread. This paper attempts to provide extensive urban and architectural guidelines in order to manage cityscape and to ensure safe and healthy living. Through recommendations on design and layout of tall buildings and open spaces the guidelines seek enhancing the visual experience, improving the microclimate conditions, and fostering active social life. These guidelines help in providing enjoyable urban experiences through the examination of spatial relationships, human scale, genius loci, perceptual characteristics, local identity, built heritage, economic activities, and social life.

• Interaction and multiscale mechanics
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• 제1권3호
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• pp.357-368
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• 2008

The result of damage detection from on-site measurements is commonly polluted by unavoidable measurement noises. It is widely recognized that this side influence could be reduced to some extent if the sensor placement was properly designed. Although many methods have been proposed to find the optimal number and location of mono-type sensors, the optimal layout of multi-type sensors need further investigation, because a network of heterogeneous sensors is commonly used in engineering. In this paper, a new criterion of the optimal placement for different types of sensors is proposed. A corresponding heuristic is developed to search for good results. In addition, Monte Carlo simulation is suggested to design a robust damage detection system which contains certain redundancies. The validity of these methods is illustrated by two bridge examples.

• 한국주거학회논문집
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• 제12권3호
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• pp.13-20
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• 2001

It seems that outdoor-space has been properly neither planned nor used in the Mixed-Use Dwellings. The purpose of this research is to analyze the present condition and problems of outdoor-space utilization in the Mixed-Use Dwellings to find the application and the correlativity between outdoor-space types and forming factors. The results are as follows; 1) Entire samples of outdoor-space are classified into 6 groups by the road and site jointing type and the building layout type. 2) There are 5 prime factors forming and utilizing outdoor-space, which are the hierarchy of the road, the way of parking area utilization, the types of business in the commercial part, combining type of two uses which are residential and commercial, and the type of access to each part of them. 3) Amongst the factors, the way of parking area utilization, combining type, and the type of access are greatly related to the type of outdoor-space in the Mixed-Use Dwellings.

• 한국주거학회논문집
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• 제15권3호
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• pp.53-62
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• 2004

Recently the landscape of housing has been emphasized. This trend seems to reflect the negative aspects of housing landscape in urban area. Throughout the analysis on the various visual density index, the following findings were obtained; 1) Elevation blockage ratio(EBR) was permitted differently according to the types of housing blocks, and the preference of block layout was different to the location of site. 2) EBR regulation level was acceptable. But 40m level of general area should be stepped up to the 35m level. 3) The correlation between the floor area ratio(FAR) and the EBR was not high. Therefore it is reasonable to regulate the EBR to the location. 4) Elevation coverage ratio(ECR) was highly correlated with the FAR. It means that FAR can substitute for the ECR, and ECR should be regulated to the level of FAR.

• 한국디지털건축인테리어학회논문집
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• 제3권2호
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• pp.8-13
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• 2003

The purpose of this study was to analyze the Site layout of Buddhist Architicture by water space of landscape architecture. As a result, the following fact is identified; We knew that land scape of Buddhist Architecture is intentional device. Example from the Tong-do Temple, it leads cleary the intention of water-space. The case of Tong-do Temple, water space is divided into Yeon-ji(lotus pond) and the Yeong-gi(shadow pond) and Gye-ryu(mountain stream). The viewing intention of Gu-Ryong-ji where Yong-ji the construction intention characteristic is positive it was intended there is a possibility of knowing. From the research which it sees it is limited in case of the Tong-do Temple tries to search a concrete instance. but on this outside many multiple architectural space uses water space and It creates the space where it leads the harmony of architecture and intention it was plentifully included.