• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1183-1188
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• 2005

In this paper, we propose a 3D automated measuring system which measures the mandibular movements and the reference plane of the jaw movements. In diagnosis and treatment of the malocclusions, it is necessary to estimate the mandibular movements and the reference plane of the jaw movements. The proposed system is configured with double stereo-cameras, PC, two moving pattern plates(MPPs), two fixed pattern plates(FPPs) and one orbital marker. The virtual pattern plate is applied to calculate the homogeneous transformation matrices which describe the coordinates systems of the FPP and MPP with respect to the world coordinates system. To estimate the parameters of the hinge axis, the Euler's theorem is applied. The hinge axis points are intersections between the FPPs and the hinge axis. The coordinates of a hinge axis point with respect to the MPP coordinates system are set up to fixed value. And then, the paths of the jaw movement can be calculated by applying the homogeneous transformation matrix to fixed hinge axis point. To examine the accuracy of the measurements, experiments of measuring the hinge axis points and floating paths of them are performed using the jaw motion simulator. As results, the measurement errors of the hinge axis points are within reasonable boundary, and the floating paths are very similar to the simulator's moving path.

• 대한공간정보학회지
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• 제20권1호
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• pp.93-99
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• 2012

본 연구는 행정중심복합도시 건설에 따라 이에 편입되는 지역과 그 주변지역을 포함한 공주시를 대상으로 지가의 시공간적 변화패턴을 파악하는데 목적이 있다. 이를 위해 2000년, 2005년, 2010년을 기준시점으로 209개의 동/리별 평균지가를 산출하여 GIS데이터를 구축하였다. 분석방법으로는 크게 3가지 측면으로 구분할 수 있다. 먼저 공간통계기법의 일종인 크리깅 보간에 의한 5년 단위의 지가변화 추이를 파악하였다. 둘째, 동서축과 남북축의 방향별 변화패턴을 알아보기 위해 경향분석(trend analysis)을 실시하였다. 셋째, 시점별 지가중심점의 이동 방향을 살펴보기 위해 지가를 가중치로 하여 가중평균중심점(weighted mean center)을 산출하였다. 그 결과 지목(Land Category)별 지가변화추세는 행정중심복합도시에 편입되는 동부지역에서 높은 성장세를 보이는 것으로 나타났고, 중심점의 이동방향 역시 동북부지역으로 편중되는 현상을 보였다.

• 복식문화연구
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• 제12권6호
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• pp.953-970
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• 2004

The purpose of this study was to design men's jacket pattern for variable body types by employing the data of wearing evaluation from experimental basic bodices selected by male subjects in the 30's. As a result of sensory evaluation, functional test and clothing pressure test by each type of experimental basic bodices, the 3rd experimental basic bodice was chosen to be a basic bodice type in this research since it showed a high degree in fitness and function, but a low in the clothing pressure test. As a comparison of one item from conventional jacket and sleeve pattern with each somatotype, the type 2(the standard somatotype) indicated a great fitness in both basic bodice type and conventional jacket pattern, whereas the type 1 and the type 3 showed higher fitness and moving function in the basic bodice type. In the making of men's jacket, many corrections were made in the front interscye breadth, back interscye breadth, front and back length, and shoulder line as adapting each body type. Thus, the ease-amount of chest circumference at scye for clothes should be established differently according to the size of chest circumference at scye.

• 디지털콘텐츠학회 논문지
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• 제15권4호
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• pp.527-532
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• 2014

최근 모바일 스마트 기기의 보급으로 스마트 기기에 탑재된 다양한 센서에서 수집되는 대량의 데이터를 분석하여 처리하는 빅 데이터의 시대는 위치기반 서비스(LBSs: Location-Based Services)에 까지 확대대고 있다. 이동객체 위치 예측 기술은 차세대 시공간 정보 서비스에서 요구하는 필수적인 기술로 많은 연구가 진행되어 왔다. 그러나 대부분의 기존연구는 특정 어플리케이션에 종속적인 이동객체 위치 예측 질의처리 연구로서 증가하는 차세대 시공간 정보 서비스의 기술적 요구를 반영하기가 어렵다. 따라서 본 논문은 실세계 공간 네트워크에서 이동객체들의 초대용량 시공간적 데이터를 토대로 필수적으로 예측에 필요한 기본적이고 다양한 질의를 효율적으로 처리할 수 있는 범용적 분산 이동객체 예측 질의처리 프레임워크 설계를 제안한다.

• 제어로봇시스템학회논문지
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• 제14권4호
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• pp.327-331
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• 2008

An in-line wet etch/cleaning system was established for the research and development in wet etch process as a formation of electrode such as metal or transparent conductive oxide layer. A reverse moving system was equipped in the in-line wet etch/cleaning system for the alternating motion of glass substrate in a wet etch bath of the system. Therefore, it was possible for the glass substrate to be moved back and forth and it was possible to reduce the size of the system by using the reversing moving system. For the effect of the alternating motion of substrate on the etch rate in the in-line wet etch bath, indium tin oxide(ITO) patterns were obtained through wet etch process in the in-line system in which the substrate was moved back and forth. From the CD(critical dimension) skews resulted from the ADI CD and ACI CD of the ITO patterns, it was concluded that the alternating motion of glass substrate are possible to be applied to the mass production of wet etch process.

• Spatial Information Research
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• 제16권3호
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• pp.291-301
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• 2008

대부분의 지리정보 시스템들은 유클리디안 공간을 기반으로 하고 있지만, 셀룰러 공간 역시 많은 지리정보 시스템 응용을 위한 기반 공간으로 사용될 수 있다. 셀룰러 공간에 존재하는 이동객체의 이동 형태를 분석하기 위해서는, 유클리디안 공간과 분명히 다른 특징을 갖는 셀룰러 공간상에 존재하는 이동객체들의 유사도에 대한 새로운 정의가 필요하다. 본 논문에서는 셀룰러 공간에 존재하는 이동객체의 특성에 대해 살펴보았다. 이에 따라, 셀룰러 공간에 존재하는 궤적들 간의 유사도를 정의할 수 있는 2가지의 비교지수를 제시하고, 실험을 통해 제시한 비교 지수들 간의 차이를 분석하였다.

• Journal of information and communication convergence engineering
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• 제8권4호
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• pp.349-354
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• 2010

Moving pixel displacement detection algorithm using correlation functions for making panorama image on the continuous images is presented in this paper. The input images get from a CMOS image sensor (CIS). The camera is maintained by constant brightness and uniform sensing area in test input pattern. For simple navigation and capture image has to 70% overlapped region. A correlation rate in two image data is evaluated by using reference image with first captures, and compare image with next captures. The displacement of the two images are expressed to second order function of x, y and solved with finding the coefficient in second order function. That results in the change in the peak correlation displacement from the reference to the compare image, is moving to pixel length. The navigating error is reduced by varying the path because the error is shown in the difference of the positioning vector between the true pixel position and the navigated pixel position. The algorithm performance is evaluated to be different from the error vector to vary the navigating path grid.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.689-692
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• 2021

본 논문은 Fog/Edge Computing(FEC) 환경에서 애플리케이션 서비스의 사용자 근접성을 지원하는 컴퓨팅 리소스의 최적 할당 및 지연시간 감소를 위한 이동에이전트 기반 오프로딩의 효율성을 제고하기 위한 선행연구로써, 이동객체들의 방대한 시공간 이동 이력데이터 집합으로부터 복합적인 시공간 제약을 적용한 최적 이동패턴 추출 시 수행시간 및 소요 메모리양을 효과적으로 감소시키는 알고리즘을 제안한다. 제안 알고리즘은 빈발도 기반의 최적경로 추출을 통하여 향후 FEC 환경에서 계산 오프로딩을 위한 컴퓨팅 리소스의 분배 및 배치에 유용하게 사용될 수 있다.

• Advances in nano research
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• 제16권4호
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• pp.395-412
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• 2024

This article develops a nonclassical size dependent nanoplate model to study the dynamic response of functionally graded carbon nanotube (FGCNT) nanoplates under a moving load. Both nonlocal and microstructure effects are incorporated through the nonlocal strain gradient elasticity theory. To investigate the effect of reinforcement orientation of CNT, four different configurations are studied and analysed. The FGM gradation thorough the thickness direction is simulated using the power law. In the context of the first order shear deformation theory, the dynamic equations of motion and the associated boundary conditions are derived by Hamilton's principle. An analytical solution of the dynamic equations of motion is derived based on the Navier methodology. The proposed model is verified and compared with the available results in the literature and good agreement is found. The numerical results show that the dynamic performance of FGCNT nanoplates could be governed by the reinforcement pattern and volume fraction in addition to the non-classical parameters and the moving load dimensionless parameter. Obtained results are reassuring in design and analysis of nanoplates reinforced with CNTs.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2003년도 추계학술대회논문집
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• pp.333-338
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• 2003

Nano-imprint lithography(NIL) is a polymer embossing technique, capable of transferring nano-scale patterns onto a thin film of thermoplastics such as polymethyl methacrylate(PMMA) using this parallel process. Feature size down 10 nm have been demonstrated. In NIL, the pattern is formed by displacing polymer material, which can be squeeze flow of a viscous liquid. Due to the size of the pattern, a thorough understood of the process through experiments may be very different. Therefore we nead to resort to numerical simulation on the embossing process. Generally, there are two ways of numerical simulation on nano-scale flow, namely top-down and bottom-up approach. Top-down approach is a way to simulate the flow assuming that polymer is a continuum. On the contrary, in the bottom-up approach, simulation is peformed using molecular dynamics(MD). However, as latter method is not feasible yet. we chose the top-down approach. For the numerical analysis, two dimensional moving grid was used since the moving grid can predict the flow front. Effects of surface tension as well as the slip at the boundary were also considered.