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프리캐스트 콘크리트 적용을 위한 고강도 매스 콘크리트의 강도특성에 관한 기초적 연구
박조현(Park Jo-Hyun),김성진(Kim Sung-Jin),백민수(Paik Min-Su),이승훈(Lee Seung-Hoon),박병근(Park Byung-Keun),정상진(Jung Sang-Jin) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.8
Recently, as architectural concrete structures become high-rise and megastructured, concrete become high-strengthened and, by ensuring products of more stability, and rationalization of construction are required.large cross-sectional precast concrete members such as columns show large temperature increase in manufacturing process not only by external heating but also by concrete itself's hydration heating. Therefore, it is expected that specimen for management to predict strength and compression strength of precast concrete member shows different strength characteristics. Concerning this, in order to suggest strength characteristics of high strength mass concrete suitable for precast concrete application, this study comprises the inclusive investigations on the relations between core strength and the strength characteristics per member cross-section dimensional value and per water-bonding material ratio value.
mPetCare : 공공데이터를 활용한 반려동물 케어 시스템 설계 및 구현
조현성 ( Hyun-sung Jo ),박석천 ( Seok-cheon Park ),박준식 ( Jun-sik Park ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.2
최근 핵가족과 고령화 등의 영향으로 반려동물과 함께 생활하는 사람들이 많아지고 있다. 특히, 1인 가구의 증가로, 외로움을 타는 현대인이 증가하면서 반려동물을 가족으로 인식하는 이들이 많아졌다. 따라서, 본 논문에서는 반려동물의 소유주들이 직면하는 문제점들을 해결하기 위하여 공공데이터를 활용한 반려동물 케어 시스템을 설계 및 구현하고, 이를 통해 반려동물을 원할히 관리 할 수 있도록 하였다.
랫드에서 계피유래활성물질(CB-PH)의 경구투여에 의한 4주간 반복투여독성 시험
조현무(Hyun-Mu Jo),성낙원(Nak-Won Seong),제정환(Jung Hwan Che),박기대(Ki Dae Park),남기택(Ki Taek Nam),조완섭(Wan-Seob Cho),한범석(Beom Seok Han),양기화(Ki Hwa Yang),김방현(Bang Hyun Kim),이국경(Kook Kyung Lee),김형진(Hyoung-Chin Kim 한국독성학회 2003 Toxicological Research Vol.19 No.4
Although 'Cinnamon' has been widely used for the food and biophamacy in the world, it's toxicity was not screened completely. Major component of 'cinnamon' is CB-OH and CB-PH. CBPH has been reported to have antimutagenic effect. To investigate the toxicity of 2- o-Benzoylcinnamaldehyde (CB-PH), repeated dose (4 weeks) oral toxicity test performed in SD rats. Results of repeated dose oral toxicity tests for 4 weeks (CB-PH; 500, 1000, 2000 mg/kg/day) suggested that the CB-PH treated group showed no significant toxicological findings with body weights, organ weights, hematological and histopathological findings. Therefore, these data indicated that the maximum tolerated dose of CB-PH was 2000 mg above/kg/day in the rats.
모바일 환경에서 공공데이터와 공개API를 이용한 매시업 활용방안
조현성 ( Hyun-sung Jo ),박석천 ( Seok-cheon Park ),박준식 ( Jun-sik Park ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.2
모바일 디바이스가 확산 된 이후 대다수 사용자는 PC의 웹브라우저 보다는 모바일 웹브라우저를 이용하고 있다. 모바일 환경에서 매시업은 최근 몇 년 동안 상당한 관심을 받고 있으며, 정부 3.0이 주도되면서 공공데이터의 공개가 활성화되고 민간기업도 API를 공개 하고 있다. 따라서 본 논문에서는 모바일환경에서 공공데이터와 공개API를 이용한 매시업 활용방안을 연구 및 분석한다.
프리캐스트 콘크리트 적용을 위한 고강도 매스 콘크리트 부재의 강도 특성에 관한 실험적 연구
박조현(Park Jo-Hyun),김성진(Kim Sung-Jin),백민수(Paik Min-Su),이회근(Lee Hoi-Keun),이승훈(Lee Seung-Hoon),박병근(Park Byung-Keun),정상진(Jung Sang-Jin) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Recently, as architectural concrete structures become high-rise and megastructured, concrete become high-strengthened and, by ensuring products of more stability, air compression and rationalization of construction are required. In general, product management test of precast concrete member, specimen for management cured in the same condition with precast concrete member is substitutively used for strength test. However, large cross-sectional precast concrete members such as columns show large temperature increase in manufacturing process not only by external heating but also by concrete itself's hydration heating. Therefore, it is expected that specimen for management to predict strength and compression strength of precast concrete member shows different temperature history and strength characteristics. Concerning this, in order to suggest temperature history and strength characteristics of high strength mass concrete suitable for precast concrete application, this study comprises the inclusive investigations on the relations between management specimen with similar temperature history and core strength, and the strength characteristics per member cross-section dimensional value and per water-bonding material ratio value.