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브리모니딘 분무와 관류에 따른 눈물배출계의 형태학적 변화
양현승,오동은,Hyun Seung Yang,Dong Eun Oh 대한안과학회 2011 대한안과학회지 Vol.52 No.5
Purpose: To investigate the effects of 0.15% brimonidine tartrate ophthalmic solution spray on the luminal changes in the nasolacrimal excretory system. Methods: A prospective study was performed on 52 eyes in 26 patients complaining of epiphora in both eyes. The randomly- assigned 26 test eyes (cases) received spray of the solution through the nasal cavity, and the other 26 eyes (controls) were irrigated with the same drug through the inferior calnaliculus. Dacryocystography was then performed to observe the luminal changes jn the nasolacrimal excretory system, patient symptoms and physiologic drainage functions. Results: The changes in lumen width of the nasolacrimal duct (NLD) were noted, and the changes in lumen width of the lacrimal sac were not significant in either mode. The upper and middle parts of the NLD were widened more in the irrigation group, and the lower part of the NLD was widened more in the spray group. Though there was no significant difference in the physiologic drainage functions, the patients in both groups reported reduced symptoms. Conclusions: Brimonidine tartrate spray altered the width of the NLD and improved the subjective symptoms of patients. Therefore, the spray can be applied in functional NLD obstruction patients before the surgical procedure. J Korean Ophthalmol Soc 2011;52(5):511-518
UNIK를 이용한 장병 심리진단 전문가 시스템의 지식베이스 구축 방법론
양현승,박상성,장동식,Yang, Hyun-Seung,Park, Sang-Sung,Jang, Dong-Sik 한국군사과학기술학회 2005 한국군사과학기술학회지 Vol.8 No.4
This paper describes an expert system for soldiers psychology diagnosis. In the field warfare, platoon leaders or company commanders have to diagnose his soldier's condition correctly. The expert systems, a field of artificial intelligence, can be appropriate approach for ill-structured paradigm. This use an UNIK system. This UNIK system is composed of UNIK-FRAME, UNIK-BWD, UNIK-WBI, UNIK-INDUCE and UNIK-Interface. Especially, UNIK-WBI system is very useful to display soldiers psychology diagnosis and so easy to use it. Any leader or commander can easily do this. This paper data is based on DSMIV. Through This expert system, combat power can be kept and accidents be protected.
서로 다른 프로스타글란딘 제제 점안 후 발생한 단순포진각막염 1예
양현승,박호균,최상경,Hyun Seung Yang,Ho Gyun Park,Sangkyung Choi 대한안과학회 2011 대한안과학회지 Vol.52 No.9
Purpose: To report a case of herpetic keratitis after administration of two different prostaglandin analogues. Case summary: A 68-year-old female with a history of herpetic keratitis in her right eye after using latanoprost seven years previous presented with redness, mild ocular pain and tearing in the same eye. She had also been prescribed travoprost eye drops for both eyes for uncontrolled glaucoma one month earlier. The cornea in her right eye showed a dendritic epithelial defect with focal epithelial erosions. Travoprost treatment was discontinued, and the herpetic keratitis recovered completely in ten days with acyclovir ointment and oral agent. No further recurrence was observed in the following six months. J Korean Ophthalmol Soc 2011;52(9):1119-1122
양밍(Ming Yang),정지년(Ji-nyun Chung),양현승(Hyun Seung Yang) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.2
SQI method has been proven to be an efficient image preprocessing technique for illumination-invariant face recognition. In this paper, we propose to apply smoothing and Contrast Limited Adaptive Histogram Equalization before SQI method. The motivation is to conquer the suppress noise that may hinder recognition task and enhance sharp edges in low frequency illumination parts which is beyond the capability of SQI.
효과적인 내용기반 영상 검색을 위한 사용자의 각 시각 특징에 대한 민감도 분석 및 적용에 관한 연구
노동현(Dong-hyun No),양현승(Hyun-Seung Yang) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.1B
대부분의 내용기반 영상 검색 시스템들은 시각 특징들에 기반한 영상간의 유사도를 이용해서 영상을 검색한다. 일반적으로 영상간의 유사도는 사람들의 주관에 의존적이다. 그러므로 사용자가 직관적인 영상 검색의 성능을 높이기 위해서 각각의 사용자가 느끼는 영상간의 유사도를 고려할 필요가 있다. 본 논문에서는 검색 결과에 대한 사용자의 적절도 피드백을 이용해서 각 시각 특징에 대한 사용자의 상대적인 민감도를 분석하고, 이를 검색에 적용하는 방법을 제안한다. 본 논문에서는 제안한 방법을 적용하여 Hue, Saturation, Intensity 등의 시각 특정에 기반한 자연 경관 영상 검색 시스템의 프로토타입을 설계하고 구현하였다.