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최연상(Yeon Sang Choi),백영곤(Young Gon Baik),유희준(Hee Joon Yu),손숙자(Sook Ja Son),김용재(Yong Jae Kim) 대한피부과학회 1994 대한피부과학회지 Vol.32 No.2
Pressure alopecia can occur after prolonged pressure on the scalp with the head fixed in one position. We have repor ted 5 cases of pressure alopecia, occurring over the contralateral temporoparietal 1 area after tympanomastoidectomy due to chronic ot.itis media. Total times of operations were from 4 hours to 7 hours. Four of the 5 patients experienced scalp pain during the early postoperative period and one of them showed large bulla formation. Loss of hairs followed between the 14th and 36th postoperative day, and new hairs began to grow 2 or 3 months after the operation. (Kor J Dermatol 1994; 32(2): 352-357)
무선센서네트워크기반의 디지털 도어락을 이용한 홈오토메이션 시스템 개발
최연상(Yeon-Sang Choi),박용태(Yong-Tae Park),백운성(Woon Sung Baek),이동훈(Dong-hun Lee),변재영(Jae-Young Pyun) 한국정보기술학회 2011 Proceedings of KIIT Conference Vol.2011 No.5
최근 정보통신 기술의 발전에 따라 센서 네트워크 발전에 따라 우리의 생활공간에서 응용되는 빈도가 높아지고 있다. 또한, 유비쿼터스 기술이 발전하여 컴퓨팅 및 생활 기술이 발전하였다. 그에 따라 응용 서비스들이 제공되고 있다. 현재의 홈오토메이션 시스템은 기존의 건물에 적용하기 위해서는 설치 시간의 증가와 함께 사용자의 비용이 증가한다. 우리의 시스템은 도어락에 서버가 장착되며, 집 밖에서도 인터넷을 통해 집안 내부의 상황을 모니터링 할 수 있으며, 제어도 가능하다. 결과적으로 우리의 시스템이 설치시 발생하던 비용적인 문제와 시간적인 문제를 해결 하였다. Recently information and communication technology and sensor networks has been delveoped, Thus the frequency of application in our living space is increased. Ubiquitous computing and the technological advance develops better life quality. Application services are provided accordingly. To apply with existing buildings the home automation system, increase the installation time and the user’s cost. Our system is mounted on the server by door lock, When user is outside of home via the internet, it can be observed the situation inside of the house, and also can be controlled. As a result, our system solved the cost of installation and time problem.
에너지 효용성을 고려한 무선 체온 센서 노드 개발 연구
최연상(Yeon-Sang Choi),변재영(Jae-Young Pyun) 한국정보기술학회 2013 Proceedings of KIIT Conference Vol.2013 No.5
최근 인구의 고령화와 출산율 감소로 인하여 병원의 환자는 포화상태에 이르고 있으며, 이는 곧 의료진들의 과도한 업무로 이어지고 향상된 의료 서비스 제공을 저하시키고 있다. 의료진들은 반복적으로 환자의 상태를 체크하기 위하여 일정한 주기 동안 반복적으로 환자의 체온을 측정하게 된다. 이는 곧 의료진들의 업무량 증가로 이어진다. 이를 해결하기 위하여 환자의 몸에 체온 측정 센서를 부착하여 측정하면 의료진들의 단순 반복적인 체온측정 방식에서 벗어나 측정된 체온 데이터 값을 모니터링 하여 적절한 의료 서비스를 제공함으로써 단순 업무량을 줄일 수 있을 것이다. 무선 체온 측정의 정확도 및 에너지 소모를 줄이기 위하여, 임계값(threshold)을 이용하여 중복 전송에 소모되는 에너지 소모를 줄이고, 체온 측정의 정확도를 높이기 위하여 관자놀이와 겨드랑이에 센서를 부착하여 측정하도록 하였다. 본 논문에서는 무선 (Wireless sensor network) 센서 노드가 갖는 요구사항과 이를 위한 구현 방법을 논하고자 한다. Recently, the decrease in mortality rate of the aging population is giving rise to the number of patients in the hospitals. The medical staffs are required to check the medical condition of the patients at the regular interval of time. However, as the numbers of patients are growing, the medical staffs are facing hard time to give quality of service with the limited staffs. There are certain medical examinations such decrease the work load of medical staffs. The body temperature of a patient can be measured through the temperature sensor, and the measured temperate can be reported to a sink device wirelessly. In this paper, we study how the temperature sensor can be used to accurately measure the temperature of the patient and how it can be transferred to the sink energy efficiently.
일반 건강인에 대한 매독혈청검사 성적 ( 1987 - 1991 )
최연상(Yeon Sang Choi),유희준(Hee Joon Yu),손숙자(Sook Ja Son) 대한피부과학회 1994 大韓皮膚科學會誌 Vol.32 No.5
Backgrouod : According to the areas and people that are examined, there are many differences in the prevalence of syphilis in Korea. However, the reactive rate of the serologi test for syphilis showed an increase in the 1960s, and it has deerea@sed from the beginning of the 1970s. Objective : Comparing the results of tke serologic test for syphilis which lotad been performed for the 5 years(1987-1991) on the physical examines and pregnant women who were considered as healthy, with the results with normal people, who were considered as healthy, which had been already reported, we tried to observe the change of reactive rate of serologic test for syphili. Methode : The serologic test for syphilis, including serum VDRL test and serum TPHA test, were carried out on 25,254 healthy adults(20,405 were physical examineea eamined at National Medical Center and 4,849 were pregnant women delivered at National Medical Cer ter). Results : The reaetive rate of serum VDRL test was 0.8% in 25,25 the althy adults(physical examinees 0.8%, pregnant women 0.7%). There were no stistically differerces between the annual incidences. 85.5% of VDRL-reactive subjects showed low VDRL titers(below 1:4) by the quantitative serum VDRL test, The biologic false positive reaction of serum VDRL test was 29(19.5%) in 149 VDRL-reactive subjects, using serum TPHA test as a standard. Conclusion : This study suggested thai, there was a decrease in the prevslence of syphilis in Korea. (Kor J Dermatol 1994;32(5):866-871)