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Usability 중심의 웹사이트 평가 프레임워크 개발
이수열 ( Soo Yul Lee ),박종현 ( Jong Hyun Park ),윤명환 ( Myung Hwan Yoon ) 한국감성과학회 2003 추계학술대회 Vol.2003 No.-
본 연구는 Usability 중심의 웹사이트 평가를 위한 프레임워크 모델의 구축을 목표로 한다. 이를 위해 기존에 구축된 웹사이트 평가 방법론을 분석하여 평가 요소 별 중요도를 설정하였다. 비교 분석을 통해 나온 문제점들을 기초로 웹사이트평가를 위한 평가요인(Critical Factor)을 선정하여 새로운 프레임워크 모델C³ISP(Contents, Community, Commerce, Interface, Security, Performance)를 제시하였다. 향후 연구과제로는 프레임워크의 유용성을 분석하기 위한 Running Test를 실시한다.
이수열(Su-Yul Lee),김우승(Woo-Seung Kim),조수(Soo Cho),성욱주(Uk-Joo Sung),박희문(Hee Mun Park),심경종(kyung-Jong Sim) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
This study is intended to identify how quick disconnect coupling which connects with refrigerant piping of air-conditioner using R-22 refrigerant has effect on characteristics of flux. in the case where the air-conditioner installs utilizes quick disconnect coupling, COP has an effect on the quantity of cooling load because of changing flow rate and physical properties of refrigerant which flow into an entrance of expansion valve from coupling. Variation of flow rate can be regulated by changing expansion-contraction angle; α of an entrance and an exit of coupling. In this study, quick disconnect coupling is presented flow of coupling by using FLUENT as heat flow program. To have an effect on the expansion entrance valve, and by changing expansion-contraction angle; α of an entrance and an exit
이수열(Soo-Yul Lee),박연준(Yeon-Jun Park),김수만(Su-Man Kim),유광호(Kwang-Ho You),장성일(Sung-Il Jang),서영호(Young-Ho Suh) 한국암반공학회 2010 터널과지하공간 Vol.20 No.5
해저에 시공되는 터널은 일반시공보다 환경에 더 많은 영향을 받는다. 특히 해수의 침입에 따른 염해의 위험에 노출되어 있으며, 이는 콘크리트에 포함된 철근과 강섬유의 부식에 큰 영향을 미친다. 해수 침투에 따른 염해 가능성이 염려되는 터널에서 최근 내부식성 섬유로 그 활용도가 증가하고 있는 폴리프로필렌섬유를 대상으로 강섬유와의 성능 비교를 통하여 적정 배합비를 결정하고, 원형패널 시험과 휨인성 시험을 통해 지보재로서의 성능을 평가하였다. 본 연구의 결과는 해저에 시공되는 터널에서 섬유보강재의 선택 및 섬유보강 숏크리트 설계에 활용될 수 있을 것으로 판단된다. Submarine tunnels are affected by the surrounding environments more than regular tunnels. Especially, they are often vulnerable to damage by salt in seawater. Seawater is more likely to affect reinforcing rods and steel fibers than concrete. Recently the usage of anti-corrosive fibers increases in the tunnel which is subject to the possibility of damage. By comparing the capability of polypropylene fibers with that of steel fibers, the proper mixture ratio is decided and the supporting capability of polypropylene fibers was tested using round panel and beam specimens. The results of this study can be of great use in selecting the fiber material and designing of fiber reinforced shotcrete of submarine tunnels.
호텔레스토랑의 외재적단서가 서비스품질평가에 미치는 영향: 구매전탐색과정을 중심으로
이수열 ( Soo Yul Lee ),조선배 ( Sun Bai Cho ) 한국호텔리조트카지노산학학회 2004 호텔리조트연구 Vol.3 No.1
This study examines the effects of extrinsic cues in the evaluation of the hotel restaurant at the pre-purchase stage. Extrinsic cues are personal referral, external environment, and price. 240 subjects for experiment research were selected from those who used hotel restaurants and a 2×2×2 factorial experiment was designed. And also a scenario was created with extrinsic cues that were from a literature survey. The results of these extrinsic cues affected the service quality evaluation ot the hotel restaurant in a positive way. However, price did not show any visible correlation with internal atmosphere.
급속분리커플링으로 연결된 에어컨의 운전성능에 관한 실험적 연구
조수(Soo Cho),이수열(Su-Yul Lee),성욱주(Uk-Joo Sung),박희문(Hee Mun Park),심경종(kyung-Jong Sim),김우승(Woo-Seung Kim) 대한설비공학회 2008 대한설비공학회 학술발표대회논문집 Vol.2008 No.2
This study analyzed operation characteristics of air-condition piping is made by quick disconnect coupling. Air-conditioning consists of central compressor 3HP capacity and R22 refrigerant. We experimented with two operation cycles of air-condition under the same environment; one is with quick disconnect coupling. The other is without quick disconnect coupling. As a result, we can observe whether the condensation temperature of former increased by about 3-5. Furthermore, COP decreased by about 10%.
식도정맥류 출혈시 내시경적 경화요법과 Propranolol 의 병용투여가 재출혈과 생존율에 미치는 효과
이금희(Kuem Hee Lee),이수정(Soo Jeong Lee),문익홍(Ick Hong Moon),장태일(Tae Il Jang),김지호(Ji Ho Kim),안수열(Su Yul Ahn),한병훈(Byung Hoon Han),박병채(Byung Chae Park) 대한내과학회 1995 대한내과학회지 Vol.48 No.3
N/A Objectives: We conducted this study to evaluate the therapeutic efficacy of endoscopic sclerotherapy combined with oral propranolol therapy in the prevention of esophageal variceal rebleeding and in survival rate in patients with liver cirrhosis. Methods: Among the 54 patients involved, 34 patients were treated with the combination therapy using endoscopic sclerotherapy and propranolol and 20 were received sclerotherapy alone. Sclerotherapy was done with ethalnolamine oleate at 7-day intervals untill obliteration of varices was achieved. Propranolol was administered to achieve a reduction in resting pulse rate of 20~25%. Results ; Of the patients treated with the combination therapy, 69.6%, 56.4% and 25.1% were free from rebleeding at 6, 12 and 24 months after entry, respectively. The corresponding figures in patients treated with sclerotherapy alone were 50.5%, 27.5% and 7.5% respectively. The cumulative percentages of the patients free from rebleeding were significantly higher in the combination therapy group than in the latter group (p=0.022). The cumulative survival rates, at 6, 12 and 24 months, of the patients received the combination therapy were 81.9%, 72.5% and 55.8% respectively. The corresponding survival rates in the patients treated with sclerotherapy alone were 77.5%, 53.2% and 11.2% respectively. The cumulative survival rate in patients recerved the combination therapy was significantly higher than those of the latter group (p= 0.004). The multivariate Cox model individuated the propranolol treatment as an independent prognostic indicator of the death rate, but not for the recurrent bleeding. During this study, no significant adverse effect was observed in both group. Conclusion: The combination therapy using endoscopic sclerotherapy and propranolol has shown to be an effective treatment in the prevention of recurrent variceal bleeding as well as in the prolongation of survival rate in cirrhotic patients. Therefore, this method of treatment may be considered as standard therapy of esophageal variceal bleeding.