• Proceedings of the Korean Society of Precision Engineering Conference
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• 한국정밀공학회 2012년도 추계학술대회 논문집
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• pp.377-378
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• 2012

• Proceedings of the Korea Water Resources Association Conference
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.93-94
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• 2005

• Proceedings of the Korea Water Resources Association Conference
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.101-102
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• 2005

• The Bulletin of The Korean Astronomical Society
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• 제29권2호
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• pp.58.2-58.2
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• 2004

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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• 한국측량학회 2002년도 추계학술발표회 논문집
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• pp.27-29
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• 2002

• Proceedings of the Safety Management and Science Conference
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• 대한안전경영과학회 2001년도 추계학술대회
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• pp.215-217
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• 2001

• Proceedings of the Korean Society of Laser Processing Conference
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• 한국레이저가공학회 2000년도 춘계학술발표대회 논문개요집
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• pp.20-23
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• 2000

• The Journal of the Korea Contents Association
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• 제11권12호
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• pp.71-77
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• 2011

CEP(Complex Event Processing) is a technique to find complex event pattern in a massive information system. Based on CEP technique, an abuse pattern monitoring method has been developed to provide an real-time detection. In the method, the events occurred by game-play are observed to be against the rules using CEP. User abuse patterns are pre-registered in CEP engine. And CEP engine monitors user abuse after aggregating the game data transferred by game logging server. This article provides the performance analysis results of the abuse pattern monitoring method using real game DB. We results that the method proposed in previous study is effective to monitor abusing users.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 한국조명전기설비학회 2009년도 춘계학술대회 논문집
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• pp.360-363
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• 2009

Total monitoring device of leakage current in transformer can detects the flowing leakage current on the neutral line, and that is monitored at real-time by the transfer. If the over-flowing current is detected Total monitoring device of leakage current in transformer will warn the administrator to prevent electrical accident. In this thesis, we are going to explain about Total monitoring device of leakage current in transformer and the necessity of Total monitoring device of leakage current in transformer through real-accident cases and equipment condition in Korea.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• 제27권2호
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• pp.225-234
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• 2009

Real-time Aerial Monitoring System (RAMS) is to perform the rapid mapping in an emergency situation so that the geoinformation such as orthophoto and/or Digital Elevation Model is constructed in near real time. In this system, the GPS/INS plays an very important role in providing the position as well as the attitude information. Therefore, in this study, the performance of an IMU sensor which is supposed to be installed on board the RAMS is evaluated. And the integration algorithm of GPS/INS are tested with simulated dataset to find out which is more appropriate in real time mapping. According to the static and kinematic results, the sensor shows the position error of 3$\sim$4m and 2$\sim$3m, respectively. Also, it was verified that the sensor performs better on the attitude when the magnetic field sensor are used in the Aerospace mode. In the comparison of EKF and UKF, the overall performances shows not much differences in straight as well as in curved trajectory. However, the calculation time in EKF was appeared about 25 times faster than that of UKF, thus EKF seems to be the better selection in RAMS.