• 복식
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• 제58권2호
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• pp.15-33
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• 2008

Continuity and discontinuity is a relative concept, and there are various categories of the continuity and discontinuity in our circumference. Generally, characteristics of postmodernism including between the difference and the variety have being regarded as a discontinuity. Concept of the continuity includes between the quantitative continuity and the qualitative continuity qualitative continuity has organic characteristic, which encourages creating something permanently through the flowing of the time. Therefore, this thesis has studied like this complex social condition and various relationships expressed in modern fashion focusing on permanently creative movements and behaviors equal to the 'continuance' theory of Herni Bergson and 'continuity' theory of Jill Deleuze. This thesis classifies characteristics of the qualitative continuity into spatiotemporal and spatial continuity, and subdivides into 3 sets: perceptual continuity, spatial continuity, transferring continuity of physical experience, immaterial informational continuity, and fluid continuity with environment. Continuous viewpoint, which accepts the existing elements and allows them to flow liberally, should be present more appropriative thinking direction in explaining the complex situation expressed in the modern fashion, rather than discontinuous viewpoints focused on the only changing moment.

• Spatial Information Research
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• 제14권3호
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• pp.285-297
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• 2006

본 연구는 지라정보시스템과 원격탐사자료를 이용한 거시적 관찰과 현지답사를 통해 조선시대의 왕릉 분포지에 대해 형태적 특성과 외부 환경적 특성을 분석한 것이다. 조선시대 왕릉은 주로 호상편마암과 화강암 지질에 위치하며, 봉분은 남사면과 동사면에 주로 위치한다. 해발고도는 150미터에서 200미터 사이에 분포한다. 논리적인 풍수이론을 검증한 결과라기 보단 위성영상에 나타날 왕릉을 분석하여 현재 시점에서 입지를 관찰하게 되어 정확한 입지 요인을 도출하기는 한계가 있었다. 배산임수의 임(臨)이 얼마나 가까워야 하는지를 수량화 하는 것 자체가 매우 어려운 작업이고 지리정보분석의 결과로 평균 600미터 정도 떨어져 있는 하천은 의미가 없을 수 있다. 또한 광릉의 경우에서 보듯 상세한 지형지물의 관찰의 결과 왕릉은 인위적 훼손과 자연적 풍화와 침식에 오랫동안 노출되고 있었다. 사면분석과 경사분석 등의 지리정보 분석과 더불어 야외조사를 통해 지형형성과정을 관찰한 내용은 왕릉의 관리와 복원에 사용될 것이다.

• 대한원격탐사학회지
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• 제34권6_1호
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• pp.1055-1066
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• 2018

식생의 광학적 특성을 기반으로 만들어진 식생지수들은 식물의 생물생산량뿐만 아니라 생리적 활성을 나타내고 있다. 식생지수의 활용은 위성에 장착된 다중분광 광학 센서의 발달에 힘입은 바가 크지만, 관측 공간규모에 따라 식생지수의 민감도가 달라질 수 있어 여러 규모에서의 비교 관측이 요구된다. 특히 광화학반사지수(PRI, Photochemical Reflectance Index)는 광합성능과 식물 스트레스 탐지에 유용한 것으로 알려져 있지만 올바른 해석을 위한 다양한 공간규모에서의 선행연구가 드물다. 본 연구에서는 드론에 장착된 다중분광 카메라, 소형 필드 초분광계, 휴대용 잎 반사계를 이용해 마늘 작물을 대상으로 서로 다른 공간규모의 PRI를 평가하였다. 잎 규모에서 하루 중 PRI는 잎의 윗면이 향하는 방위에 따라 서로 다른 시간에 최저값을 보였으며, 이는 어떤 순간에 잎마다 다른 광이용효율(LUE, Light Use Efficiency) 상태라는 것을 의미한다. 잎 규모에서는 식생피복율에 영향을 받지 않으므로 PRI 생물계절적 변화는 생육 초기에 개체 및 군락 규모보다 값이 높게 나타났다. 개체 및 군락 규모에서 PRI는 생물량을 나타내는 NDVI(Normalized Difference Vegetation Index)와는 달리 공간적 변동성이 크게 나타났다. 반면, 지상의 개체들 규모의 식생지수를 드론 영상의 관측 지점 값과 비교해 보면 NDVI에 비해 PRI가좀더 좋은 일치도를 보였다. 이러한 결과는 서로 다른 공간규모에서 관측된 PRI를 이해하고 활용하는데 도움이 될 것이다.

• 한국멀티미디어학회논문지
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• 제21권2호
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• pp.158-165
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• 2018

Since a large amount of multimedia image has dramatically increased, it is important to search semantically relevant image. Thus, several semantic image annotation methods using RDF(Resource Description Framework) model in mobile environment are introduced. Earlier studies on annotating image semantically focused on both the image tag and the context-aware information such as temporal and spatial data. However, in order to fully express their semantics of image, we need more annotations which are described in RDF model. In this paper, we propose an annotation method inferencing with RDFS entailment rules and user defined rules. Our approach implemented in Moment system shows that it can more fully represent the semantics of image with more annotation triples.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집E
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• pp.783-788
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• 2001

Choosing the most suitable mathematical model and relating this to turbulent tangential tensions model are very important in the investigations of turbulent two-phase flow. This paper considers two-fluid scheme. According to it, two phases have their own densities, velocities, and temperatures at any spatial point and at any moment. The equations of motion and heat transfer for each phase are linked with the forces of interaction between two phases. These forces are considered as predominant for the flow. As a closure in the system of motion equations, one modification of $K - {\epsilon}$ turbulent model is worked out. The modification uses two equations for turbulent kinetic energy of the phases and one - for the turbulent energy loss of main phase. This model can be set as a $K_g - K_p -{\epsilon}$ model. The modified model has been tested for both a two-phase non-isothermal flat jet and axially symmetrical jet. The numerical results are compared with the reference data revealing a good agreement between them.

• 한국음향학회지
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• 제6권3호
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• pp.31-42
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• 1987

본 논문은 초음파의 감쇠정보를 이용하여 조직을 정량화하기 위한 연구이다. 비선형 매질에서의 제반특성 (비선형감쇠, Non-Gaussian특성, 산란등) 때문에 생기는 측정오차를 줄일 수 있는 스펙트럴 모멘트법을 제안하였다. 본 연구에서는 비선형 감쇠 및 산란특성을 고려하여 R. G신호의 Z. C. D(Zero Crossing Density)를 측정하는 방법에 이론적인 기초를 두고, 산란매질에서 수신된 반사파의 P. S. D(Power Spectral Density) 와 스펙트럴 모멘트를 이용하여 주파수의존 감쇠계수를 구하였다. 또한 이론의 유효성을 확인하기 위한 시제시스템을 개발하였다.

• 한국실내디자인학회논문집
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• 제38호
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• pp.48-56
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• 2003

This study is purposed to find the transition of the perspective connected with visual modality. The perspective based on Greek optics and euclidean geometry and rediscovered in Renaissance represents the object according to the particular moment and the point of view, is a principal fact which affect architecture, the form of a city and the spatial organization and symbolizes an ideal of the times. It embodied perception which treats the space rationally on the basis of realism and became visual modality based on the separation of the seeing subject and the world of the object. The point of view became one with the vanishing point which made up the shape and after Renaissance for four hundred years a straight line, a right angle and a circle got to be favorite geometrical choices in architecture. A fixed point of view of the subject is getting to change and break up fundamentally by the new visual technologies of the modem times.

• 건축역사연구
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• 제7권1호
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• pp.67-80
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• 1998

As a result of this study, an attempt to emphasize the effect of perspective through the factors of spatial constitution is considered that, in Mwaeom thought, the establishment of the basic situation for cherishing the religious experience as Seonjae Dongja's course of ascetic practice, was needed. Therefore, placing of gates, terrace make-up and the changing spaces and constitution that the space under a castle moves from narrow darkness to wide brightness, express the steps of the course of ascetism. Through this, it gives observers dramatic changes and expectation to their sensual feeling. The emphasis on the perceptibility of Muryang Sujeon, Anyang Loo and the terrace by using a perspertive technique can be interpreted as an intention to express the very delightedness at the last moment the truth is perceived.

• 제어로봇시스템학회논문지
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• 제20권3호
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• pp.333-344
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• 2014

This is the survey paper on the role of kinematics in robot development. The robot is considered as a form of mechanical systems which includes closed-chain loop system, open-chain loop system and closed and open switching system. To analyze these systems, kinematic notations has been developed in kinematics of mechanical theory since 1955 and has been applied in robotics. Several kinematic notations including Denavit-Hartenberg notations have been reviewed. The status of development of the spherical motor which has a great impact on the future robot advancement has reviewed, and research activity on a spherical motor and its application to 3-D spatial mechanisms at UNIST is introduced. For the open and closed switching mechanical systems, the bipedal robots' walking theories using Zero Moment Point are reviewed. And current status regarding bipedal robots based on newly developed passive dynamic walking theory is reviewed with the research activity at UNIST on this subject.

• 한국연소학회:학술대회논문집
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• 한국연소학회 2006년도 제32회 KOSCO SYMPOSIUM 논문집
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• pp.121-127
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• 2006

It has become inevitable to search for alternative fuels due to severe energy crisis these days. Use of alternative fuels, which are typically of lower quality, tends to increase environmental pollution, including formation of nitrogen oxides (NOx). In this paper performance of vacuum residue has been investigated experimentally as well as numerically in typical operating conditions of a furnace. Heat release reaction is modeled as sequential steps of devolatilization, simplified gas phase reaction and char oxidation as that for pulverized coal. Thermal and fuel NOx are predicted by conditional estimation of elementary reaction rates and are compared against measured experimental data. On the overall reasonable agreement is achieved for spatial distributions of major species, temperature and NOx for all test cases.