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보건의료시설의 실내 예상 평균 온열감(PMV), 이산화탄소 농도, 소음도, 조도의 통합실내쾌적도(IEQh)를 통한 연간 실내 쾌적도 평가
이보람(Boram Lee),이대엽(Daeyeop Lee),반현경(Hyunkyung Ban),이세원(Sewon Lee),김규상(KyooSang Kim),이기영(Kiyoung Lee) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.3
Objectives: A hospital is a complex building that serves many different purposes. The indoor environment in a hospital plays a major role in patient well-being and the work efficiency of the hospital staff. This study was conducted to evaluate overall comfort in two major hospitals over the course of one year. Methods: Various indoor environmental conditions were measured in two general hospitals for one year (April 2014 to April 2015). Monitoring alternated between the hospitals at one month per respective monitoring session. The indoor air temperature, relative humidity (RH), mean radiant temperature and air velocity were measured in order to calculate the predicted mean vote (PMV). Carbon dioxide concentration, noise level and illumination level were concurrently measured and applied to the overall IEQ acceptance model for the hospitals (IEQh). Results: The IEQh at the two general hospitals was different at five spaces within a building. The IEQh for summer and winter were significantly different. Real-time IEQh demonstrated that indoor comfort was affected by the hospital s operating hours due to operation of the HVAC system. The percentage of indoor comfort in the hospitals was higher using PMV than IEQh. Conclusion: IEQh in the hospitals was different at locations with different purposes. Indoor comfort assessment using IEQh was stricter than with PMV. Additional research is needed in order to optimize the IEQh model.
SeWon Lim,HeonJeong Lee,MinSoo Lee,KangSeob Oh 대한신경정신의학회 2007 PSYCHIATRY INVESTIGATION Vol.4 No.1
Objective-Several lines of evidence suggest that brain-derived neurotrophic factor (BDNF) plays a role in the pathophysiology of anxiety. We analyzed the association of the BDNF gene val66met polymorphism, in the coding region of exon XIIIA in chromosome 11q and panic disorder (PD). Methods-One hundred and six patients with PD and 160 control subjects were tested for the BDNF (val66met) polymorphism. A clinical interview and MINI international neuropsychiatric interview were conducted by trained psychiatrists to diagnose panic disorder according to DSMIV. Information about the symptomatic characteristics of panic disorder was also gathered by measuring various clinical scales (Hamilton anxiety rating scale, Beck anxiety inventory, Spielberg State-Trait Anxiety inventory and Anxiety sensitivity index). Results-There were no significant differences in the frequencies of the genotypes (χ2=4.16, df=2, p=0.13), alleles (χ2=0.79, df=1, p=0.37) or allele (Met) carriers (χ2=0.28, df=1, p=0.59) between the patients and controls. In addition, in comparing the severity of panic disorder with the genotypes of the BDNF gene, we could not find any significant differences between the genotypes. Conclusions-These results suggest that BDNF (val66met) polymorphisms do not play a major role in the susceptibility to or severity of panic disorder in our Korean population.
Implementation of Vision-based Real Time Helipad Detection System
Sewon Lee,Jin-won Jang,Kwang-Ryul Baek 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
This paper presents vision-based helipad detection algorithm and implementation of embedded landing system for an UAV (Unmanned Aerial Vehicle). The helipad detection algorithm includes various image processing processes and feature recognition methods. It is essential for the embedded system that the detection algorithm should be simple and accurate. We propose optimized image processing algorithm and simple morphological algorithm to implement an embedded system for detecting the international standard helipad. First, we perform image preprocessing includes filtering, thresholding and labeling. After image preprocessing, we perform feature extraction of the helipad. Second, the size and position calculation of the detected helipad is performed. Third, the size and position information of helipad is transmitted via communication port. In these processes, we can estimate the position information of the UAV by using the size and the position of helipad in the aerial moving image. In experiment, we use aerial moving image photographed by coaxial rotor helicopter and save the detected helipad to SD-card to demonstrate the accuracy and real time processing capabilities. The experimental results show that proposed embedded system has features of real time and reliable accuracy.
Aggressive Clinical Deterioration of Recurrent Extramammary Paget’s Disease : A Case Report
Sewon Lee,Sang Yoon Kim,Heejin Bang,Kyoung Eun Lee Ewha Womans University School of Medicine 2022 EMJ (Ewha medical journal) Vol.45 No.4
Extramammary Paget’s Disease (EMPD) is a rare intraepithelial malignancy of apocrine bearing glands, which occur usually in the perianal region, vulva, scrotum, penis and ax-illa. Most of the disease are treated by surgical resection and the prognosis is generally good. Even though recurrent disease, it is usually slowly progressed with good prognosis. Here we describe the case of a 70-year-old male who has presented with initially just as an EMPD component of squamous cell carcinoma in inguinal skin, but he showed recur-rence of EMPD. The disease has progressed rapidly, finally he died of that EMPD in 2 months of recurrence. The purpose of this study is to report the rare case of fulminant disease course of EMPD after recurrence.
4 Cases of circumscribed acral hypokeratosis
( Sewon Jung ),( Wooseok Jeong ),( Seunghyun Moon ),( Taekgeun Lee ),( Hyun Hwangbo ),( Sookkyung Lee ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Circumscribed acral hypokeratosis (CAH) is a rare disorder characterized by a well-circumscribed and erythematous depressed patch on the palm or sole. Clinically, patches of depressed skin are seen most commonly on the thenar or hypothenar areas in middle-aged or elderly. Although the pathogenesis of CAH is not well established, trauma is uncommonly cited as a precipitating factor. Recent reports suggest that CAH may be caused by human papilloma virus (HPV). Histologically, it has a characteristic stair-like configuration between normal and involved skin with an abrupt thinning of the horny layer and a decreased granular layer, giving the clinical appearance of a punched-out lesion. The lack of epidermal atypia or cornoid lamellae clearly differentiates CAH from its clinical mimics, Bowen disease and porokeratosis. All lesions reported to date show benign biological behavior. We report four cases of circumscribed acral hypokeratosis occurring in old female with results from microscpic analysis, HPV testing and treatment.