• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 1992년도 추계학술발표회논문집
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• pp.37-40
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• 1992

This paper examined the existance behavior of charged particles by measuring polarity inversion current Thermal Stimulate Current (TSC) and analysed appearance mechanism of polarity inversion current Peak and Also investigated relation between ionic space charge format ion and dielectric breakdown by measuring D.C breakdown impulse breakdown D.C - impulse superposition as a sample of FET. As a result. lie found that dielectric breakdown is likely to happen due to ionic space charge at the transient state when applied polarity inversion voltage and that charged partion of TSE Peak at the high temperature was the same as that of polarity inversion current. Also there was no effect on ionic space charge about the dielectric breakdown in stationary state when applied D.C voltage.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.484-486
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• 2018

나로우주센터에서는 우주발사체 및 경비행기의 사거리(slant range)를 측정하기 위해서 전자광학추적 장비에 MFCW (Multi Frequency Continuous Wave) 거리측정 도플러 레이다를 탑재하여 운용하였다. 본 논문에서는 레이저광파 거리측정장비에서 정확히 측정된 사거리 측정값과 도플러 레이다의 트랜스폰더를 사용하여 측정된 사거리 측정값 차이를 비교분석하고 사거리 정확도를 기술하였다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2001년도 ICCAS
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• pp.132.1-132
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• 2001

In this paper, we have studied for development of unmanned remote supervisory system using mobile communication network, not wire network, not to be affected by space or distance. The unmanned remote supervisory system consists of data processing unit main part and measuring systems (modules part)-temperature measuring module, humidity measuring module and human body sensing module. The data processing unit to collect and process informations of each measuring module has the functions of data communication between a mobile cellular telephone and measuring systems. Each measuring module has supervisory and warning functions for a target of supervision. And then we have designed each system and evaluated accuracy and reliability of the combined total system.

• 정보처리학회논문지B
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• 제9B권1호
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• pp.129-138
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• 2002

본 논문에서는 모션캡쳐를 위해 컬러 스테레오 카메라를 이용한 거리 측정 알고리즘을 제안하였다. 현실공간의 연기자 각 관절 부위에 컬러마커를 부탁시키고 이를 컬러 스테레오 카메라를 이용해 촬영한 후, 본 논문에서 제안한 컬러 매칭방법과 컬러 영역중심의 분석방법에 의해 카메라로부터 마커가지의 거리를 계산한다. 스테레오 영상에서 마커의 컬러영역을 추출하기 위해 국부지역내의 각 픽셀의 RGB(red, green, blue) 컬러 정보를 CIE(Commission Internationale de1'Eclairage) 컬러 공간으로 변환시켜 컬러의 파장을 계산하고, 국부지역의 우월 파장이 마커의 컬러파장과 일치하는지를 검색한다. 가상공간에서의 캐릭터의 움직임은 시간에 따른 마커의 위치 변화정보를 처리하는 프로그램에 의하여 제어된다.

• 대한기계학회논문집A
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• 제21권12호
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• pp.2146-2155
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• 1997

This paper presents the Wire Parallel Mechanism for robot pose measurement which can be used to robot calibration. It is constructed with six parallel links using wire. The position and orientation of the end effector of a robot are calculated from the wire length that measured by the encoder. The unique solution is obtained from a Newton-Raphson method and geometric configuration of the mechanism, also the method to estimate a measuring space is presented. Through the simulations, it is verified that the proposed mechanism can measure a robot pose, and has a large measuring space. In conclusion, it can be used effectively in a robot pose measurement with little cost and effort.

• 한국정보통신학회논문지
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• 제24권3호
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• pp.349-354
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• 2020

녹지 영역의 확충을 위한 사전 조사에는 많은 비용과 시간이 필요하다는 문제가 발생한다. 본 논문에서는 구글 어스를 이용한 합성곱 신경망 기반의 녹지 분류를 통해 특정 지역의 녹지 비율을 측정함으로써 문제를 해결한다. 먼저 제안하는 방법은 구글 어스에서 여러 지역 영상을 수집하고 합성곱 신경망을 이용하여 학습한다. 제안하는 방법은 특정 지역의 녹지 비율을 측정하기 위해서 영상을 재귀적으로 분할하고 학습된 모델을 이용하여 녹지 여부를 판단한 뒤, 녹지로 판단된 영역 면적을 이용하여 녹지 비율을 계산한다. 실험 결과 제안하는 방법은 다양한 지역의 녹지 비율 측정에 높은 성능을 보여주는 것을 확인할 수 있었다.

• International Journal of Aeronautical and Space Sciences
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• 제13권2호
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• pp.221-228
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• 2012

An active compensation method for the deformation of composite structures using additional controllable metal parts is proposed, and its feasibility is experimentally investigated in a simulated space environment. Composite specimens are tested in a vacuum chamber, which is able to maintain pressure on the order of 10-3 torr and interior temperature in the range of ${\pm}30^{\circ}C$. The displacement-measuring interferometer system, which consists of a heterodyne HeNe laser and an interferometer, is used to measure the displacement of the whole structure. Meanwhile, the strain of the composite part and temperature of both parts are measured by fiber Bragg grating sensors and thermistors, respectively. The displacement of the composite structure is maintained within a tolerance of ${\pm}1{\mu}m$ by controlling the elongation of the metal part, which is bonded to the end of the composite part. Also, the possibility of fiber Bragg grating sensors as control input sensors is successfully demonstrated using a proper corrective factor based on the specimen temperature gradient data.

• 한국산업융합학회 논문집
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• 제11권3호
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• pp.141-148
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• 2008

Most of the recent studies on Seowon have been done just in terms of classification of general kinds of building layout, so there are a few things ignored such as the way they were arranged, the compositional process of buildings etc.. Although the classification of types itself is meaningful in the study on Korean traditional architecture, there has been some limitation in deep analysis of each style. The aim of this study is to find out the characteristics of the building layout and space composition of Dodong-Seowon with the viewpoint of the process of changes of it during the time through the survey and analysis on both the existing site layout and the measuring unite of scale applied to the original construction of each building. Hierarchical order scheme was considered in the design of the space proceeding from the entrance to the main space and of the building position, axis and the roof heights of buildings.

• Architectural research
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• 제22권4호
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• pp.155-162
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• 2020

Numerous scholars have explored the modeling, control, and optimization of energy systems in buildings, offering new insights about technology and environments that can advance industry innovation. Eye trackers deliver objective eye-gaze data about visual and attentional processes. Due to its flexibility, accuracy, and efficiency in research, eye tracking has a control scheme that makes measuring rapid eye movement in three-dimensional space possible (e.g., virtual reality, augmented reality). Because eye movement is an effective modality for digital interaction with a virtual environment, tracking how users scan a visual field and fix on various digital objects can help designers optimize building environments and materials. Although several scholars have conducted Virtual Reality studies in three-dimensional space, scholars have not agreed on a consistent way to analyze eye tracking data. We conducted eye tracking experiments using objects in three-dimensional space to find an objective way to process quantitative visual data. By applying a 12 × 12 grid framework for eye tracking analysis, we investigated how people gazed at objects in a virtual space wearing a headmounted display. The findings provide an empirical base for a standardized protocol for analyzing eye tracking data in the context of virtual environments.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 1990년도 추계학술발표회논문집
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• pp.63-67
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• 1990

Many characteristics of space charge in insulating materials which is the cause of insulation break down was measured quantita-tively. It was confirmed that injection charge of the electrode was trapped to form mainly space charge. In the present paper, collecting potential was determined by TSSP and mean depths of space distribution was investigated by measuring variation quantity of space charge under the different bias time, voltage and temperature. Experimental resuts was in good agreement with model analysis on a stedy state.