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윈도우 미디어 서비스를 이용한 UPnP 미디어 서비스 구현
안재영 ( Jaeyoung Ahn ),양광석 ( Gwangseok Yang ),이재문 ( Jaemoon Lee ),황기태 ( Kitae Hwang ),김남윤 ( Namyun Kim ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.2
본 논문은 윈도우 미디어 서비스를 이용하여 UPnP 미디어 서비스를 개발 관한 것이다. 윈도우미디어 서버를 사용함으로써 별도의 기능 개발 없이 주문형 기능과 브로드캐스트 기능을 갖는 미디어 서비스를 개발할 수 있음을 보였다. 제안된 시스템은 UPnP 에서 제시한 서비스 규격에 따라 설계되었으며, 마이크로소프트 윈도우 2003 에서 구현되었다. 구현을 올바름을 보이기 위하여 다양한 실험을 하였으며, 이들을 통하여 효율적으로 주문형 기능과 브로드캐스트 기능이 동작하는 것을 보였다.
Analysis of Cosmic Radiation Exposure for Domestic Flight Crews in Korea
Ahn, Hee-Bok,Hwang, Junga,Kwak, Jaeyoung,Kim, Kyuwang The Korean Space Science Society 2022 Journal of astronomy and space sciences Vol.39 No.2
Cosmic radiation exposure of the flight crews in Korea has been managed by Radiation Safety Management around Living Life Act under Nuclear Safety and Security Commission. However, the domestic flight crews are excluded from the Act because of relatively low route dose exposure compared to that of international flight crews. But we found that the accumulated total annual dose of domestic flight crews is far from negligible because of relatively long total flight time and too many flights. In this study, to suggest the necessity of management of domestic flight crews' radiation exposure, we statistically analyzed domestic flight crew's accumulative annual dose by using cosmic radiation estimation models of the Civil Aviation Research Institute (CARI)-6M, Nowcast of Atmospheric Ionizing Radiation for Aviation Safety (NAIRAS), and Korean Radiation Exposure Assessment Model (KREAM) and compared with in-situ measurements of Liulin-6K LET spectrometer. As a result, the average exposure dose of domestic flight crews was found to be 0.5-0.8 mSv. We also expect that our result might provide the basis to include the domestic flight crews as radiation workers, not just international flight attendants.
Novel severity quantitative analysis method for melasma
( Jaeyoung Kim ),( Geo Han ),( Onseok Lee ),( Seunghan Ha ),( Jaewoo Ahn ),( Chilhwan Oh ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.2
Background: Melasma is a common pigmentary skin disease with patchy facial skin discoloration and typically appears on upper cheeks, upper lip, forehead, and chin. The most common severity assessment method of melasma is Melasma Area Severity Index(MASI)score. However,ordinary MASI scoring system has some downsides due to the observer``s subjective visual judgment. Objectives: This study aimed to develop a new advanced severity assessment method of melasma based on computerized optical imaging analysis system. Methods: We proposed a new analysis method for the quantitative assessing of melasma. In order toquantitatvely analyze the involvement area, we divided frontal, cheek and chin region in patients. The divided images were processed to define the melasma lesions by the multi-threshold method and gradient mask were apply to correct the curvature error of facial contour.Degree of darkness and homogenesis were measured based on intensity of gray level and difference of gray level in melasma lesions. Results: The proposed new quantitative assessment method for melasma is more objective and accurate than ordinary MASI method. also, our method is able to quantify a minute difference of pigmented pattern among melasma patients. Conclusion: We developed the quantitative assessment method for melasma using computerized optical imaging analysis.Based on the results, our new computerized optical imaging system could be used as valuable tools to assess the severity of various pigmentary skin diseases
Sclerosing Peritonitis Presenting as a Huge Peritoneal Cyst : Two Cases Report
Ahn, Juhee,Kim, Chahyun,Lee, Taewoo,Choi, Jaeyoung,Park, Jongsun,Kang, Eungtaek,Yu, Suk Hee,Cha, Seong Jae,Lim, Hyun Muck 중앙대학교 의과대학 의과학연구소 2001 中央醫大誌 Vol.26 No.2
Though sclerosing peritonitis(SCP)is rare, it is a serious complication of continuous ambulatory peritoneal dialysis(CAPD) patients. The pathogenesis of SCP, which appears to be multifactorial, is unclear even now. We report on two patients wo had been diagnosed with SCP presenting as a hung peritoneal cyst. They were transferred from CAPD to hemodialysis(HD) because of ultrafiltration failure and intractable peritonitis. Abdominal CT showed a hung fluid-filled cyst in the peritoneal cavity. Because of intractable ascites and abdominal discomfort, exploratory lapartomy with cyst removal and adhesiolysis were performed. The pathology confirmed the diagnosis of SCP. The patients have remained healthy without any complications or further treatment.
국내 위성통신의 응용서비스 분류체계 및 수요예측 방법론에 관한 연구
안재경,홍정식,이강원,임종인,박명철 한국경영과학회 1993 經營 科學 Vol.10 No.1
In this study, potential Communication Satellite Application Services (CSASs) that are suitable for our communication environment have been identified through a detailed analysis of the CSASs offered in advanced countries. The existing demand forecast based on the defined CSAS category has been improved, and the transponder assignment policy has also been recommended. Managerial problems rather than technical ones for KOREASAT project have mainly been addressed and tackled in this study. For the successful implementation of the domestic communication satellite system, these two problems should be solved simultaneously. Therefore, future research that includes technical as well as managerial issues is expected to come out soon.
유재영(Jaeyoung Yu),문동민(Dongmin Moon),박근원(Geunwon Park),손준호(Junho Shon),안진표(Jinpyo Ahn),이서윤(Seoyun Lee),박현주(Hyunju Park),김승민(Seungmin Kim) 한국HCI학회 2024 한국HCI학회 학술대회 Vol.2024 No.1
대학교에서 제공하는 다양한 웹 서비스들은 학생들에게 정보를 제공하는 창구의 역할을 하고 있다. 하지만 일부 서비스는 사용자인 학생의 상황을 고려하지 않고 서비스 하는 것으로 파악된다. 본 논문은 기존의 웹 서비스를 사용자인 학생 중심으로 개선한 과정을 고찰한다.