• 대한공간정보학회지
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• 제25권1호
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• pp.9-17
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• 2017

초분광 영상(hyperspectral imagery)은 주성분분석이나 최소잡음비율 등을 이용하여 자료의 차원과 잡음을 감소시켜 토지피복분류에 사용되는 것이 일반적이다. 최근에는 분광정보와 공간적 특성을 가진 다양한 입력 자료를 이용한 감독분류에 관한 연구가 활발히 진행되고 있다. 본 연구에서는 초분광 영상을 이용한 토지피복분류를 위해 principle component(PC) 밴드와 normalized difference vegetation index(NDVI) 자료를 감독분류의 입력자료로 활용하였다. NDVI 자료는 초분광 영상에서 추출된 PC 밴드가 포함하고 있지 않는 추가적인 정보를 활용하여 식생지역에 대한 토지피복분류 정확도를 높이고자 사용하였으며, morphological filter를 통해 각 밴드의 extended attribute profiles(EAP)를 제작하여 분류를 위한 입력 자료로 사용하였다. 감독분류기법은 random forest 알고리즘을 이용하였으며, EAP를 기반으로 다양한 입력 자료의 적용에 따른 분류정확도를 비교하고자 하였다. 연구지역으로는 두 대상지를 선정하였으며, 영상 내에서 취득한 참조자료를 이용하여 정량적인 평가를 수행하였다. 본 연구에서 제안한 기법의 분류정확도는 85.72%와 91.14%로 다른 입력 자료들을 이용한 경우와 비교하여 가장 높은 분류정확도를 나타냈다. 향후, 초분광 영상을 이용한 토지피복분류의 정확도를 높이기 위한 분류 알고리즘 개발과 대상지역 특성에 맞는 추가 입력자료 개발에 관한 연구가 필요할 것으로 사료된다.

• 서비스연구
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• 제9권3호
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• pp.1-16
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• 2019

본 연구는 선행연구들에 이어서 서비스철학 정립을 위해 서양 대표사상의 서비스철학성을 고찰하였다. 선행 연구들을 참조하여 서비스철학의 구조와 운용모델을 종합하여 제시하고, 서양 대표사상의 서비스철학성을 분석하였다. 시대별로 서양 대표사상을 분석하였는데, 고대 지중해 철학, 아테네철학을 서비스구조 관점에서 상세히 분석하고, 근대 사상과 현대사상은 서비스 운용모델 정합성 관점에서 자세히 분석하였다. 서비스의 무형성과 과정성 특징이 서양 대표사상의 세계관과 부합하는지를 분석하고, 서비스의 본질적 특성인 관계성, 쌍방향성, 수평성, 조화성이 서양대표사상에서 공통적으로 강조되고 있는지를 분석하였다. 또한 서비스의 나선형 발전 모델이 서양대표사상에서의 세계 발전 모델과 정합되는지도 고찰하였다. 고대 사상에서 근대사상까지 주류 사상들은 대립물의 변증법적 발전을 강조하고 있어 서비스의 태극형 기본 구조가 서양 사상에서의 세계의 운행구조와 부합되고 있는 것으로 나타났다. 또한 고대에서 현대 사상에 이르기까지 순환론과 과정론이 중심사상으로 나타나고 있어 프로세스가 가치를 창출하는 서비스 운용모델과 일관성이 있는 것으로 나타났다. 관계성과 조화성은 대다수의 서양사상가들이 세상의 근본 운행원리로 제시하고 있으며, 쌍방향성과 수평성도 세상의 이상적인 운영모델로 제시되고 있다. 서양 대표사상들을 활용하여 서비스철학을 보다 심화시킬 수 있으며, 인류사회를 이끌어가는 사상으로서 서비스철학이 중심 역할을 할 수 있음이 확인되었다. 향후 신경제사회의 중심사상으로서 서비스철학의 구조와 운용원리를 완성하기 위한 후속 연구들이 필요하다. 미래 경제사회 발전을 견인하는 큰 사상으로서 서비스철학 완성 연구가 필요하다.

• 한국음향학회지
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• 제21권1호
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• pp.69-72
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• 2002

부호책 설계에 사용되는 초기 부호책을 얻기 위해 수정된 미소분리 방법을 제안한다. 제안된 방법은 다른 클래스에 비해 소속되는 학습벡터가 다수 소속되거나 자승오차가 작은 클래스에 대표벡터를 더 많이 할당한다는 원리를 적용한다. 기존 K-means 알고리즘과 참고문헌 (5)에서 제안한 방법을 적용하여 설계된 부호책의 성능을 평가할 때, 두 경우 모두 제안된 방법에 의해 얻어진 초기 부호책을 사용하는 것이 기존 미소분리 방법에 의한 초기 부호책을 사용하는 것보다 우수한 결과를 나타낸다.

• 한국실내디자인학회논문집
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• 제17권1호
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• pp.93-101
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• 2008

One of the big difference between Aalto and other modem architects lies in an attitude that Aalto went beyond the principle of dogmatic functionalism. As an architect of Northern Europe, Aalto made unique architecture that showed both the language of modem architecture and vernacular architecture. He presented the best example which showed modernity in architecture without losing the meaning of the context including site, region and cultural tradition. With this background, Aalto developed his own typological design approach. As Wolfsburg church was designed in his prime of time, it showed the origin and evolutionary process of religious architecture as well as general features of Aalto's design. Clustered site plan, dynamic space of interior, the adequate control of natural light are representative characteristics found in Aalto's religious architecture. Wolfsburg church also demonstrate these features in more specific way including the continuity of wall and ceiling that showed spatial dynamics, free opening of wall which reflects on functions, and careful adjust of natural light. As a result, Aalto showed his typological design strategy that added new design ideas to the accumulated design vocabularies in the design of Wolfsburg church.

• The Journal of the Acoustical Society of Korea
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• 제29권3E호
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• pp.111-118
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• 2010

Three-dimensional ultrasound imaging is a new, exciting technology that allows physicians to use ultrasound to view pathology as a volume, thereby enhancing comprehension of patient anatomy. In this paper, a brief history of the 3-D ultrasound imaging is described in accordance with the development of transducer technology. Then, two representative types of 3-D imaging transducers are reviewed with description of the concept and operation principle of each type: mechanical transducer and matrix array transducer. The mechanical transducer is detailed into free-hand scanning and sequential scanning types. Advantages of each transducer over the other and the technical issues for further performance enhancement are also presented.

• 한국실내디자인학회논문집
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• 제22권1호
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• pp.124-131
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• 2013

The innovative designer and structural engineer, Cecil Balmond is co-representative of Ove Arup and has been co-worked with world-famous architects and has been influenced so much on architectural thinking. These days he extended his career as an architect. Moreover, he has been noticed through a few publishing by his own architectural thinking. He is describing the World with his unique insight based on structural perspectives, which have much common grounds with that of Deulezian philosophy. It is especially valuable to study the relationship between his thinking of Interior-Exterior Ring and Deleuzian thinking of Virtual Circulation for understanding more clearly about structural and compositional principle how world is composed of. The Ring is circulationg from interior to exterior which is similar with Deleuzian concept that the Smooth and the Striated is circulationg mutually. Seamless flight line would be ceaseless creative virtual process to actuality.

• 한국대기환경학회지
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• 제34권4호
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• pp.610-615
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• 2018

A filter-based optical technique is one of the representative ways for the measurement and quantification of black carbon (BC). Since the filter-based technique adopts a simple principle, it is easy to put into practical use and instrumental products have already been commercialized. In this study, however, the absorption coefficients of BC after the correction process was estimated to be approximately 3 times lower than those before the correction process. In addition, the difference between before and after corrections was also evident for the trend of increasing and decreasing absorption coefficient. When BC concentration is low, uncertainty may increase regardless of corrections due to the artifacts of filter. In this sense, techniques without using a filter are required, and uncertainties will be minimized if these techniques are used to further complement the filter-based black carbon measurements. Finally, this study is believed to help understand the uncertainty and correction of filter-based black carbon measurements.

• 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.

• 한국농촌건축학회논문집
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• 제2권3호
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• pp.77-84
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• 2000

Kurye-gun, which Hwaeomsa temple is located, has huge scale's geographical characteristics, such as mountains, rivers and open fields. This is really blessing area because of Som-jin river at the bottom of Ghiri mountain and open fields, which this situation is very difficult. The location of Hwaeomsa temple is an end of The Baek-Doo Mountains and very important spot(where influences to its geometric converge) of the theory of feng-shui. On exposure logic of the Korean traditional theory of feng-shui, the organization in Ga-Ram of Hwaeomsa temple is inconsistent with representative theory and analyzing system. So, this is one of successful examples with the theory of feng-shui because exhalation from the earth and water was organized well with accuracy.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1993년도 하계학술대회 논문집 A
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• pp.383-386
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• 1993

In this paper, we propose a sensory data combination method by a fuzzy number approach for multisensor data fusion. Generally, the weighting of one sensory data with respect to another is derived from measures of the relative reliabilities of the two sensory modules. But the relative weight of two sensory data can be approximately determined through human experiences or insufficient experimental data without difficulty. We represent these relative weight using appropriate fuzzy numbers as well as sensory data itself. Using the relative weight, which is subjective valuation, and a fuzzy-numbered sensor data, the fuzzy weighted average method is used for a representative sensory data. The manipulation and calculation of fuzzy numbers can be carried out using the Zadeh's extension principle which can be approximately implemented by the $\alpha$-cut representation of fuzzy numbers and interval analysis.