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한창훈(Changhoon Han),김성일(Sungil Kim),이희업(Heeup Lee),심창수(Changsu Shim) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper deals with the influence of train on the dynamic response of steel composite railway bridges. The bridge system which has two Ⅰ-girder and several cross beams is modeled with plate and frame elements, with lower slab by the internal hinge for properties of concrete and upper slab is assumed to be fully connected with girders using rigid links. Model is performed with the moving train load and considered bouncing and pitching motion of the deck of bridge To investigate the behavior of bridges due to moving trains, parametric studies on the speed of train to the double composite bridge are performed.
한재일 ( Jaeil Han ),정기용 ( Kiyong Jung ),성정욱 ( Jungwook Sung ),한창훈 ( Changhoon Han ),손영수 ( Youngsoo Son ),김영만 ( Youngman Kim ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1
SaaS 환경에서는 다수의 사용자가 동일한 어플리케이션을 이용하게 되므로 사용자에 따라 특정 자원 혹은 기능에 대한 접근을 제어하는 보안 기능의 중요성이 더욱 부각되고 있다. 이러한 기능을 갖춘 SaaS 플랫폼의 중요성과 그 가치는 매우 크다 할 수 있으나 국내에서는 이에 대한 많은 연구가 보이지 않고 있다. 본 논문에서는 계층적 그룹 구조, 접속 시간·IP 주소·MAC ID 등에 따른 역할 부여 등 풍부한 기능을 제공하는 SaaS 플랫폼을 위한 사용자 권한 관리 시스템을 설계한다.
양준용,조성희,이준수,한창훈,허승,Yang, Joon-Yong,Cho, Sunghee,Lee, Joon-Soo,Han, Changhoon,Heo, Seung 한국환경과학회 2021 한국환경과학회지 Vol.30 No.7
We used seawater temperature data, measured in the Garolim Bay, to analyze temperature variation on an hourly and daily basis. Lagrange's interpolation using before and after data was applied to restore nonconsecutive missing temperature data. The estimated error of the data restoration was 0.11℃. Spectral analyses of seawater temperature showed significant periodicities of approximately 12.4 h (semidiurnal tide) and 15.0 d (long-period tide), which is close to those of M<sub>2</sub> and M<sub>f</sub> partial tides. Variation in seawater temperature was correlated more with tidal height than with air temperature around the Garolim Bay. In June and December, when the seawater temperature difference between the inside and outside of the Garolim Bay was very large, the periodicities of 12.4 h and 15.0 d were highly prominent. These results indicate that the exchange of seawater between the inside and outside of the Garolim Bay induced variations in seawater temperature owing to tide. Understanding temperature variation because of tide helps to prevent abnormal mortality of cultured fish and to predict seawater temperature in the Garolim Bay.
이종엽(Jongyeob Lee),한창훈(Changhoon Han),조우강(Wookang Cho),박창수(Changsoo Park),이동재(Dongjae Lee) 한국자동차공학회 2004 한국자동차공학회 Symposium Vol.- No.-
Recently the auto industry joins in with lightweight of the automobile and with the direction which attempts an durability performance and a quality improvement. For this trend development of a vehicle is necessary that corresponds to life cycle using RLDA data acquired at a proving ground by vehicle test.<br/> In this Study, using RLDA data acquired at a proving ground a accelerate durability test procedure and a fatigue analysis procedure are developed and this procedure will be applied for automotive suspension. By this procedure to confront quickly and accurately the quality problem which occurs while using a vehicle and to gather an effect of development duration shortening and cost reduction will be possible.<br/>
당유자 유래 Flavonoids 농축액이 첨가된 감귤 음료의 쥐 비만 및 혈중 지질에 미치는 영향
최영훈(Younghun Choi),이영재(Young Jae Lee),이선이(Sunyi Lee),채치원(Chiwon Chae),박석만(Sukman Park),김상숙(Sang Suk Kim),안현주(Hyunjoo An),Dale King,한창훈(Changhoon Han),홍현주(Hyunju Hong) 한국원예학회 2012 원예과학기술지 Vol.30 No.2
This study aimed to develop a new type of functional citrus beverage (Citurs-F) containing flavonoids extracted from the young fruits of satsuma mandarin (Citrus unshiu) and matured fruits of Jeju native dangyooja (C. grandis). We made beverages that contained 30% of satsuma mandarin extract with different percentages of concentrated dangyooja-derived flavonoid extracts. In sensory evalution, the highest response indices of color, taste and aroma were from the beverages based on the 30% young fruit extracts plus 15% (Citrus-F-15) and 20% (Citrus-F-20) flavonoids extract from the dangyooja using the KILO prep. In the changes of body weight after oral administration of the Citrus-F, the rat group with HF diet plus the Citrus-F decreased the body weight compared to the rat group fed only HF diet. This effect was to be continued for 9 weeks until the end of experiment. In the lipid content in blood, the rat group with oral administration of citrus extractions merely tended to resolve it in serum test. However, all the 0.1% Citrus-F-15 and Citrus-F-20 treated rat groups from the beginning or after 5 weeks appeared the lowest lipid contents in the blood. In the cholesterol contents, the rat group feeding the KILO-prep’s extraction from the beginning weren’t significantly recognized them in the group but the rat group feeding 0.1% Citrus-F-15 acted to reduce in the cholesterol contents from 5 weeks. The results indicated that the Citrus-F-15 with rich flavonoids might be main source alleviating the vascular diseases and obesity in human diet.