• 한국항공운항학회지
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• 제19권4호
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• pp.18-23
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• 2011

Generally, the digital circuit card can be tested by automatic test equipment using LASAR(Logic Automated Stimulus and Response). This paper proposes the ROM data extracting algorithm which can test the digital circuit card that consists usually ROMs. We are implemented of the proposed fault detecting program by LabWindow/CVI 8.5 and the digital automatic test instrument with NI-VXI(National Instrument - Versa Bus Modular Europe eXtentions for Instrumentation) card. We also make an interface circuit board connecting the digital test instrument and the digital circuit card. It shows the good performance of getting the data from ROMs.

• 대한의용생체공학회:의공학회지
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• 제7권1호
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• pp.53-58
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• 1986

This paper represent the design of a digital modem which transmits the ECG data from an ambulatory arrhythmia monitor over the telephone lines to a large hospital for the instantaneous interpretations. The digital modem provides on-line communications between the patient and the central computer located near cardiologists. For commercial telephone lines, the transmitting error rates of the digital modem were measured 200 times at a speed of 300 baud. In those measurements, the block errors-results, due to the misinterpretation of start and stop bits, did not occur, The data bit errors which were due to a single bit interpreted incorrectly were 0.78 (bits/10 ) . Since the acceptable data bit error limit is 10 per 106 bits transmitted, the digital modem designed in this paper can be used for the clinical applications without any difficulty.

• Nuclear Engineering and Technology
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• 제4권3호
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• pp.181-185
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• 1972

원자로의 전달함수의 측정 data의 처리를 위하여 digital bandpass filter 방법을 고안하였다. 이 방법에 의한 처리는 외부잡음을 제거하는데 대단히 유효하다는 것이 판명되었다. 이 방법에 의한 계산 코드를 작성하였으며 계산기를 사용하여 수치휠러 의 주파수반응 및 수치처리를 삼각파형과 구형파형에 대하여 계산하였으며 그결과를 표시하였다. 이 방법의 오차와 제한사항에 대하여서도 언급하였다.

• 지구물리
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• 제9권1호
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• pp.7-19
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• 2006

Laser scanning is a new technology for obtaining Digital Surface Models(DSM) of the earth surface.It is a fast method for sampling the earth surface with high density and high point accuracy. This paper is for buildings extraction from LiDAR points data. The core part of building construction is based on a parameters filter for distinguishing between terrain and non-terrain laser points. The 3D geometrical properties of the building facades are obtained based on plane fitting using least-squares adjustment. The reconstruction part of the procedure is based on the adjacency among the roof facades. Primitive extraction and facade intersections are used for building reconstruction. For overcome the difficulty just reconstruct of laser points data used with digital camera images. Also, 3D buildings of city area reconstructed using digital map. Finally, In this paper show 3D building Modeling using digital map and LiDAR data.

• 한국시뮬레이션학회논문지
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• 제14권2호
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• pp.15-24
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• 2005

The goal of a distributed simulation such as battle field simulation is to combine all kinds of simulations in the same synthetic environment and to make people interact at the same time. It is a key issue to share the same synthetic environment among simulations. To support reusability and affordability in the modeling and simulation area, DMSO(Defense Modeling and Simulation Office) of USA developed concepts such as HLA(High Level Architecture) and SEDRIS (Synthetic Environmental Data Representation and Interchange Specification). In the industrial simulation area, the digital manufacturing is the main stream. To reduce cost and to reuse simulation environment, the standardization becomes the focus of digital manufacturing. This study proposes to use SEDRIS to improve interoperability of manufacturing data. The simulation data of DELMIA, which is a leading commercial digital manufacturing solution, is mapped and translated into the SEDRIS transmittal format. Mapping of the manufacturing simulation data and the synthetic environment are implemented and verified through experiments.

• 대한치과의사협회지
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• 제57권9호
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• pp.524-528
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• 2019

With the advances of CAD-CAM (computer-aided design and computer-aided manufacturing) technology, the field of modern clinical dentistry has been dramatically changed. The first step in the digital workflow for tooth-supported dental prosthesis is a data acquisition with intraoral digital or conventional impression techniques. For the accuracy of intraoral digital impression data, the basic principles of conventional impression should be applied. It is necessary to obtain a good visibility with properly-dried field and well-exposed margin of the prepared abutment. Currently, the equi- or supra-gingival finish line can be recommended as an indication for intraoral digital impression. The scan data are generally exported to '.stl' file format, which has only morphological information of black and whitem while '.obj' file format can store data on color and texture.

• 한국기록관리학회지
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• 제22권1호
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• pp.201-217
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• 2022

본 연구의 목적은 위키데이터를 활용하여 디지털 아카이브에서 소장하고 있는 기록 자원에 대한 접근을 높이고 구축한 데이터를 공유, 재사용할 수 있는 방안을 모색하는 데 있다. 이를 위해 먼저 기록학 분야에서 논의되고 있는 디지털 환경에서 기록 자원의 기술(description) 표준과 디지털 아카이브의 데이터 관리 및 공유와 관련된 연구들을 통해 국내외 디지털 아카이브의 기록 데이터의 현황을 파악하였다. 위키데이터의 구조와 특성을 파악하고 위키데이터를 적용한 해외 디지털 아카이브의 사례들을 조사하였다. 사례 분석을 통해 위키데이터 기반의 기록 데이터 개방, 공유와 재사용을 위한 시사점을 도출하고 위키데이터를 디지털 아카이브에 적용할 때 고려할 사항을 제안하였다. 본 연구의 결과는 디지털 아카이브 구축에 있어서 최근 데이터 개방, 공유 관련 기술의 동향을 이해하고 실제 아카이브 현장에서 위키데이터를 활용한 서비스 개발의 기초자료로 활용할 수 있을 것이다.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2007년도 춘계학술발표회 논문집
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• pp.455-458
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• 2007

Currently, aortal surveying is getting advanced in the world. New digital equipment for aerial surveying makes improvement of accuracy, economical efficiency and reduces cost. for a result, however, there are required to produce a accurate product. In this study, we used two kinds of data, the one which used only GPS/INS data and the other one which used GPS/INS data added on GCPs from digital maps, and made as a mosaic to compare both of them whether which one is better based on digital maps. the result is that the data which used GPS/INS data added on GCPs from digital maps was a lot better than GPS/INS data.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2006년도 춘계학술발표회 논문집
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• pp.235-241
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• 2006

The demand of 3D terrain mapping techniques is increasing in many application fields such as CNS(Car Navigation System), web service system, DMB(Digital Multimedia Broadcasting) systems and etc To construct a 3D terrain map, it is a pre-requite step that register data collected from different surveying sources. This Paper Present the methodology to register airborne photo, LIDAR data, and digital map, which are major data sources to create a 3D terrain mao. For this purpose, we developed the generally applicable algorithm that uses linear features to register airborne photos and digital maps to LIDAR data. The algorithm explicitly formulates step-by-step methodologies to establish observation equations for transformation. The results clearly demonstrate the proposed algorithm is appropriate to register these data sources.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2009년도 춘계학술발표회 논문집
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• pp.11-13
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• 2009

본 연구는 최신의 수치지도 확보를 위한 갱신방안으로서 건축 및 다양한 SOC 건설공사에서 사용되고 있는 CAD 자료의 준공도면을 활용하여 수치지도를 갱신하기 위해 GIS 데이터로 변환하는 기법을 제시하였다. 변환과정은 레이어 추출, 객체변환, 좌표변환, 포맷변환으로 구성되며 CAD 데이터로부터 각 과정을 거쳐 변환된 GIS 데이터는 수치지도를 갱신할 수 있다.