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이덕주 ( Lee Duk-joo ),이호천 ( Lee Ho-chun ),이순광 ( Lee Soon-kwang ),김태철 ( Kim Tai-cheol ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
This research developed a method for the estimation of groundwater recharge by yielding daily soil moisture content and watershed evapotranspiration from the water balance concept of the unsaturated and saturated layers in rainfall-runoff model called DAWAST. The goal of the research is to estimate the groundwater recharge fulfilling conditions of the safe discharge for any season. To meet this goal, the data of groundwater level and stream flow rate have been monitored in a study area and used to validate the model.
한국형 무인운전 고무차륜 AGT 시스템의 유지보수를 위한 신뢰성 기반의 고장 예방정비 시스템 개발에 관한 연구
손영탁(Young-Tak Son),천환규(Hwan-Kyu Chun),엄호영(Ho-Young Uhm),이호용(Ho-Yong Lee),한석윤(Seok-Youn Han),서명원(Myung-Won Suh) Korean Society for Precision Engineering 2010 한국정밀공학회지 Vol.27 No.5
The Korean Railroad Research Institute (KRRI) has developed the rubber tired AGT system (Model: K-AGT) between 1999 and 2005. The K-AGT is a light rail transit system does not require a driver and generally operates on an elevated railroad for transporting passengers. Accidents caused by driverless vehicles can severely affect social confidence, safety and economy therefore, it is very important to minimize the occurrences of such faults, and to accurately perform detailed maintenance tasks and thoroughly investigate the cause of any repeated failures. This research develops the web-based Preventive Maintenance (PM) system for the KAGT train system. The framework of the PM system is based on performing a reliability analysis and a failure mode effects analyses (FMEA) procedure on all the sub-systems in the K-AGT system. Out of the devices that have a low reliability, the high failure ranked devices are included high in the list for performing the overall maintenance plans. Through registration of historical failure data, the reliability indexes can be updated. Such a process is repeated continuously and can achieve very accurate predictions for device operational life times and failure rates. Therefore, this research describes the development of the overall PM system consists of a reliability analysis module, a failure mode effect analysis module, and maintenance request module.
최진혁(Jin Hyouk Choi),서무규(Moo Kyu Suh),신동주(Dong Ju Shin),서진천(Jin Chun Suh),염정섭(Jung Sub Yeum),이호중(Ho Chung Lee),임성욱(Sung Wook Lim),김연진(Yeon Jin Kim),이정우(Jeong Woo Lee),하경임(Gyoung Yim Ha),김정란(Jung Ran Ki 대한피부과학회 2002 대한피부과학회지 Vol.40 No.9
Protothecosis is an unusual cutaneous soft tissue infection ca by the Prototheca, which is a genus of the unicelluar, achloric algae. We report a case of cutaneous protothecosis in a 66-year-old female, who showed erythematous, purulent patches and plaques with ulcerations on the right forearm for 2 months. Biopsy specimen revealed the characteristic thick-walled morulalike sporangia in the dermis. Prototheca wickerhamii was isolated in the culture and the biochemical study. Electron microscopic examination showed the thick-walled spores containing dark dense bodies and amyloplasts, After two months of oral itraconazole 200mg/day, skin lesions were improved. (Korean J Dermatol 2002;40(9): 1116-1120)