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Staphylococcus lugdunensis에 의한 감염성 심내막염 1예
최성호,박현구,변승운,구동회,강호석,장항제,김양수,우준희,김영휘,최상호 대한감염학회 2006 감염과 화학요법 Vol.38 No.5
Staphylococcus lugdunensis is a coagulase-negative staphylococcus (CNS) that is commonly found on the human perineal skin. Contrary to other CNS, S. lugdunensis is a rare contaminant in cultures and has the potential to cause clinically significant infections, including infective endocarditis. Infective endocarditis due to S. lugdunensis have been known to resemble endocarditis due to S. aureus because of its aggressive clinical course and high mortality. We report a case of infective endocarditis caused by S. lugdunensis in a 21-year-old woman. She was cured of the infection with surgical and antibiotic therapy. S. lugdunensis에 의한 감염성 심내막염은 국내에서보고가 없었던 매우 드물지만 다양한 합병증과 높은 사망률을 보이는 감염증이다. 저자들은 S. lugdunensis가 수술적 치료와 항생제 치료로 완치된 감염성 심내막염 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.
간세포암종에 대한 간동맥 화학색전술 후 발생한 급성호흡곤란증후군
조윤원,이정미,최자윤,유동훈,차라리,오혜원,김홍준,민현주,김현진,정운태,이옥재,하창윤,이선영 이화여자대학교 의과학연구소 2013 EMJ (Ewha medical journal) Vol.36 No.1
Transcatheter arterial chemoembolization (TACE) has become an effective alternative treatment strategy for patients with inoperable hepatocellular carcinoma (HCC). Although TACE is relatively safe, acute respiratory distress syndrome associated with pulmonary lipiodol embolism is a rare and potentially fatal complication. We report a rare case of acute respiratory distress syndrome after TACE for inoperable HCC. A 75-year-old man, with huge HCC in right lobe, was treated by TACE for the first time. Seven hours after uneventful TACE procedure, he felt dyspneic and his oxygen saturation recorded by pulse oximetry (SpO2) fell to 80% despite of applying non-rebreathing mask. He underwent mechanical ventilation with a protective ventilatory strategy. We experienced a case of acute respiratory distress syndrome after TACE for HCC.
Effect of Distraction Task on Driving Performance of Experienced Taxi Drivers
( Hyun Jun Kim ),( Mi Hyun Choi ),( Jung Chul Lee ),( Sung Jun Park ),( Ul Ho Jeong ),( Ji Hye Baek ),( Byung Chan Min ),( Dae Woon Lim ),( Soon Cheol Chung ),( Hyung Sik Kim ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
This study investigated the effects of distraction tasks, such as Sending Text Message (STM) task with cellphone and Searching Navigation (SN) task with car navigation system, on driving performance of experienced taxi drivers. Subjects performed driving only for the first 1 min (Control phase). For an additional 1 min (Task phase), they performed Driving Only, Driving + STM, or Driving + SN while driving. For all events, driving performance during the Task phase was evaluated by car control data such as average following distance, speed deviation, Anterior-Posterior Coefficient of Variation (APCV), Medial-Lateral Coefficient of Variation (MLCV). For Driving Only, Driving + STM, and Driving + SN, change of Skin Conductance Level (SCL) from the Control phase to the Task phase, relative change of SCL, was calculated to investigate change of activation level of sympathetic nervous system. Compared to Driving Only, during Driving + STM or Driving + SN, relative change of SCL was increased. Compared to Driving Only, during Driving + STM or Driving + SN, average following distance, speed deviation, APCV, and MLCV increased. It can be concluded that, even for experienced taxi drivers, distraction tasks increase workload, increased the difficulty to control a car, and detracted from safe driving.
Effect of Distraction Task on Driving Performance of Experienced Taxi Drivers
Hyun-Jun Kim,Mi-Hyun Choi,Jung-Chul Lee,Sung-Jun Park,Ul-Ho Jeong,Ji-Hye Baek,Byung-Chan Min,Dae-Woon Lim,Soon-Cheol Chung,Hyung-Sik Kim 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5
This study investigated the effects of distraction tasks, such as Sending Text Message (STM) task with cellphone and Searching Navigation (SN) task with car navigation system, on driving performance of experienced taxi drivers. Subjects performed driving only for the first 1 min (Control phase). For an additional 1 min (Task phase), they performed Driving Only, Driving + STM, or Driving + SN while driving. For all events, driving performance during the Task phase was evaluated by car control data such as average following distance, speed deviation, Anterior-Posterior Coefficient of Variation (APCV), Medial-Lateral Coefficient of Variation (MLCV). For Driving Only, Driving + STM, and Driving + SN, change of Skin Conductance Level (SCL) from the Control phase to the Task phase, relative change of SCL, was calculated to investigate change of activation level of sympathetic nervous system. Compared to Driving Only, during Driving + STM or Driving + SN, relative change of SCL was increased. Compared to Driving Only, during Driving + STM or Driving + SN, average following distance, speed deviation, APCV, and MLCV increased. It can be concluded that, even for experienced taxi drivers, distraction tasks increase workload, increased the difficulty to control a car, and detracted from safe driving.
김현준 ( Hyun Jun Kim ),이행운 ( Hang Woon Lee ),유지혜 ( Ji Hae You ),최미현 ( Mi Hyun Choi ),엄진섭 ( Jin Sup Eom ),이정환 ( Jeong Whan Lee ),탁계래 ( Gye Rae Tack ),정순철 ( Soon Cheol Chung ) 한국감성과학회 2007 감성과학 Vol.10 No.3
본 연구의 목적은 치매노인의 보호를 위해 필요한 주요문제특성의 추출이다. 시설에 입소해 있는 치매노인 110명과 정상노인 30명을 대상으로 기본특성 조사, 인지기능 선별검사(Korean Mini-Mental State Examination: K-MMSE), 문제특성 설문조사를 실시하였다. 요인분석(factor analysis)을 이용하여 치매노인의 주요문제특성을 추출하고, 일원변량분석(one-way ANOVA)을 이용하여 성별과 치매 중증도에 따른 문제특성의 빈도차이를 검증하였다. 요인분석결과 총 20개의 주요문제특성이 추출되었다. 문제특성의 빈도는 성별에 따라 폭력적 언어 및 작화, 수집행동, 반복행동에서 유의한 차이가 있었다. 치매 중증도에 따라서는 성적 이상행동과 시청력 장애를 제외한 모든 특성에서 유의한 차이가 나타났다. 본 연구 결과는 치매노인 보호를 위한 유비쿼터스 기술의 활용에 기초자료를 제공할 수 있을 것이다. The purpose of this study was to extract important problem features for care of senile dementia patients. Selected cognitive ability test (Korean Mini-Mental State Examination: K-MMSE) and survey of basic & problem characteristics were conducted on 110 hospitalized senile dementia patients and 30 normal subjects. Problem features of senile dementia patients were extracted using factor analysis. The frequency difference of problem features due to the gender and dementia severities was verified using one-way ANOVA. Twenty problem features were extracted by the factor analysis. According to the gender, there are significant differences in the frequency of problem features in violent language & confabulation, collecting behavior, and repetitive behavior. According to the dementia severities, there are significant differences in the frequency of all problem features except abnormal sexual behavior and audio-visual disorder. The result of this study is expected to be used for the development of the senile dementia patients` life-care monitoring system.
Change of neuronal activations induced by the passive perception of driving speed difference.
Kim, Hyun-Jun,Yi, Jeong-Han,Kim, Hyung-Sik,Chung, Soon-Cheol,Baek, Ji-Hye,Lee, Jung-Chul,Park, Sung-Jun,Jeong, Ul-Ho,Gim, Seon-Young,Kim, Sung-Phil,Lim, Dae-Woon,Choi, Mi-Hyun Pergamon Press 2015 Bio-medical materials and engineering Vol.26 No.1
<P>The change of neuronal activation due to the passive perception of various driving speeds in comparison to a reference driving speed was assessed using functional Magnetic Resonance Imaging. Videos recorded in real driving conditions on the road at driving speeds of 50, 70, 90, and 110 km/h were shown as visual stimuli. An experiment consisted of three blocks, each having a control phase (50km/h) and a stimulation phase (70, 90, or 110 km/h). In the passive perception of various driving speed differences, the areas related to visual cognition and spatial attention such as temporal, occipital, parietal, frontal areas, and cerebellum were activated. As the driving speed difference increased, the number of activated voxels also increased in the areas related to visual cognition. However, the visual cognition related areas showed a different pattern from the spatial attention related area with an increase of the driving speed difference. This implies that each brain area has a different level of involvement in the passive perception of the driving speed difference, although both visual cognitions related areas and spatial attention related area are related to it.</P>
전현규(Jun Hyun Kyu),김재훈(Kim Jae Hoon),김종운(Kim Jong Woon),박준서(Park Jun Seo) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
Life cycle costing is one of the most effective cost approaches when we choose a solution from series of alternative so the least long-term cost ownership is achieved. Life cycle costing in railway industry has been focused on the prediction of investment for railway vehicles. But in today, the life cycle cost, LCC, prediction on the aspect of operation and maintenance cost through whole life cycle is highly necessary. In this paper, we present a strategy for the development of life cycle cost estimation software on the aspect of maintenance strategies of railway vehicle. For this purpose, we suggested a structure of LCC software based on the UNIFE LCC model. And we developed a pilot version of software to evaluate the LCC model that we suggested for railway vehicle. We performed LCC analysis on the brake module of metro vehicle in case study and concluded that the software and model developed in this research could enough to support engineers in choosing better cost effective solutions from many alternatives.