불안정형 레이저 공진기 정렬을 위한 null 렌즈 설계

김현숙,김연수,Kim, Hyun-Sook,Kim, Yeon-Soo 한국광학회 2006 한국광학회지 Vol.17 No.2

공초점 불안정형 공진기의 광학 정렬을 정밀하게 수행할 수 있는 새로운 개념의 null 렌즈 광학 정렬 방법을 제안하였다. 제안된 정렬 방법은 3.5 m 공진기에 적용하여 민감도 분석을 통해 실용성 여부를 판단하였으며, 공진기의 길이 변화가 1.0 mm 발생하였을 때와 반사경이 광축에 대하여 1.0 mrad 기울었을 때에 대한 pupil map 분석 데이터를 제시하였다. The use of null optics is proposed as a new concept for the precise alignment of a confocal unstable resonator. The characteristics of the proposed null optics are investigated and analysed with the designed null lens for a real confocal unstable resonator of which the length is 3.5 m. As a result of the analysis, the pupil map data are shown about the despace error of 1.0 mm and tilt error of 1.0 mrad.

정지궤도 기상위성의 자동기하보정

김현숙 ( Hyun Suk Kim ),이태윤 ( Tae Yoon Lee ),허동석 ( Dong Seok Hur ),이수암 ( Soo Ahm Rhee ),김태정 ( Tae Jung Kim ) 大韓遠隔探査學會 2007 大韓遠隔探査學會誌 Vol.23 No.4

2008년 12월 우리나라 최초의 통신해양기상위성이 발사될 예정이다 통신해양기상위성의 지상국은 위성영상 데이터의 정확도 향상을 위해 사용자에게 기하보정된 영상을 공급해야 한다 이때 지상국에서 요구되는 처리시간은 30분 내외이며, 전체 처리시간의 준수를 위해 자동기하보정의 기술개발과 기하보정시 수행시간의 효율성이 중요하다. 자동기하보정은 위성의 영상좌표계와 지구좌표계상의 수학적인 관계를 나타내는 센서모델을 자동으로 수립하여 기하보정을 수행하는 것이다. 센서모델 수립을 위해 사용되는 기준점은 위성영상과 랜드마크 칩간의 정합결과를 통해서 자동으로 결정되었다. 실험에 사용한 위성영상은 GOES-9영상이며 실험을 위해 전세계 해안선 데이터베이스를 시용하여 랜드마크 칩을 211개 생성하였다. 위성영상에 존재하는 구름은 위성영상과 랜드마크 칩간의 정합시 오정합을 유발하므로 GOES-9영상의 채널1과 채널2영상에서 구름검출을 수행하여 구름이 아닌 지역에 대해서만 정합을 수행하였으며 가시영상인 채널1영상에서 밤시간이 아닌 지역에 대해서만 정합이 수행될 수 있도록 밤낮을 구분하여 처리하였다. 이때 정합결과는 오정합(Outlier)이 포함되어 있어 강인추정기법 중 하나인 RANSAC을 사용하여 이를 제거하였다. 강인추정기법으로 오정합이 제거된 정합결과를 기준점으로 시용하여 센서모델을 수립하였다. 수립된 모델의 정확도는 채널1영상의 해상도를 기준으로 하였을 때 1~2 픽셀의 에러가 나타났고 기하보정된 영상에 해안선을 투영하여 센서모델의 정확도를 육안으로 확인하였다. 이때 위성영상의 해안선과 투영된 해안선이 일치함으로써 기하보정이 잘 이뤄졌음을 알 수 있었다. 실험결과 정합과 RANSAC, 센서모델 수립 및 자동기하 보정의 전체 처리시간은 약 4분여가 소요되었다. 이로써 본 논문에서 제안된 자동기하보정방법은 기하보정이 효과적으로 이뤄지고 있으며, 또한 통신해양기상위성의 전처리요구시간에도 만족함을 보여주고 있다. The first Korean geostationary weather satellite, Communications, Oceanography and Meteorology Satellite (COMS) will be launched in 2008. The ground station for COMS needs to perform geometric correction to improve accuracy of satellite image data and to broadcast geometrically corrected images to users within 30 minutes after image acquisition. For such a requirement, we developed automated and fast geometric correction techniques. For this, we generated control points automatically by matching images against coastline data and by applying a robust estimation called RANSAC. We used GSHHS (Global Self-consistent Hierarchical High-resolution Shoreline) shoreline database to construct 211 landmark chips. We detected clouds within the image and applied matching to cloud-free sub images. When matching visible channels, we selected sub images located in day-time. We tested the algorithm with GOES-9 images. Control points were generated by matching channel I and channel 2 images of GOES against the 211 landmark chips. The RANSAC correctly removed outliers from being selected as control points. The accuracy of sensor models established using the automated control points were in the range of 1~2 pixels. Geometric correction was performed and the performance was visually inspected by projecting coastline onto the geometrically corrected images. The total processing time for matching, RANSAC and geometric correction was around 4 minutes.

항공수심측량 자료처리 소프트웨어 개발 국산화 및 그 방향

김현숙(Kim, Hyunsuk),김은영(Kim, Eun Young),허현수(Heo, Hyun Soo),김재현(Kim Jae Hyoung),위광재(Wie, Gwang Jae) 한국측량학회 2016 한국측량학회 학술대회자료집 Vol.2016 No.4

우리나라는 삼면이 바다로 둘러싸여 있어 체계적이고 과학적인 연안모니터링(shoreline erosion monitoring)이 필요한 상황이다. 특히, 동해안의 경우, 해안선 침식이 심각하게 발생되어 국토유실로의 문제로 우려되는 상황으로 국내 연안모니터링을 위한 과학적이고 객관적인 데이터가 반드시 확보되어야 한다. 이를 위해, 국내연안의 항공수심측량(Airborne LIDAR Bathymetry) 자료가 필요하며, 동일 수준의 데이터 확보를 위해 항공수심측량 자료처리 소프트웨어 개발이 요구된다. 따라서 항공수심측량 자료처리 소프트웨어는 국내연안의 특성이 반영하여 결측률(missing data rate)을 줄일 수 있는 자료처리 성능개선 및 알고리즘 연구개발이 요구된다. 본 논문은 이러한 상황을 반영하여 연구 개발 중인 항공수심측량 자료처리 소프트웨어를 소개하고자 한다.

식혈증후군이 동반된 성인형 스틸병 2예

김현숙 ( Hyun Sook Kim ),박근우 ( Keun Woo Park ),김수경 ( Soo Kyoung Kim ),김지영 ( Ji Young Kim ),박성훈 ( Sung Hoon Park ),신진향 ( Jin Hyang Shin ),김상경 ( Sang Gyung Kim ),최정윤 ( Jung Yoon Choe ) 대한류마티스학회 2007 대한류마티스학회지 Vol.14 No.2

Adult onset Still`s disease is an rare inflammatory disease with the characteristic of fever, skin rash, arthralgia or arthritis, lymphadenopathy, leukocytosis and multiple systemic organ involvement. Its accurate pathogenesis has not been elucidated yet. Its clinical manifestation is also very diverse, from relatively mild symptoms to severe complications such as concomitant infection, liver failure, disseminated intravascular coagulation, myocarditis, adult respiratory distress syndrome, which may lead to death in some cases. Particularly, concomitant hemophagocytic syndrome is rare complication that could induce a fatal outcome. Thus it is important to diagnose early and start treatments. Until now, it has been reported in only one case of adult onset Still`s disease in Korea. Here, we report two female cases of adult onset Still`s disease with concomitant hemophagocytic syndrome.

염증성 근육병증에 동반된 폐침범의 임상적 특징

김현숙 ( Hyun Sook Kim ),서수홍 ( Soo Hong Seo ),허지안 ( Ji An Hur ),곽승기 ( Seung Ki Kwok ),주지현 ( Ji Hyeon Ju ),윤종현 ( Chong Hyeon Yoon ),김완욱 ( Wan Uk Kim ),홍연식 ( Yeon Sik Hong ),조철수 ( Chul Soo Cho ),김호연 ( Ho Y 대한류마티스학회 2007 대한류마티스학회지 Vol.14 No.1

Objective: To investigate the clinical manifestation and prognostic factors of interstitial lung disease (ILD) in Korean patients with idiopathic inflammatory myopathies include with polymyositis (PM) and dermatomyositis (DM). Methods: Clinical and laboratory data of 110 patients with PM/DM in our rheumatology clinic were investigated. Clinical data including history, medication, pulmonary function tests (PFT) findings, radiologic findings, and labaratory findings were obtained from medical records at the first diagnosis of ILD with PM/DM. ILD was diagnosed on the basis of the imaging abnormalities defined above on definite findings of chest X-rays and high resolution computed tomography (HRCT), restrictive changes on PFT with respiratory symptoms. During the course of treatment, we assessed chest radiograph and HRCT findings. Results: Forty-two PM/DM patients (38.2%) developed ILD. Anti-extracellular nuclear antigen (ENA) antibody, anti-Jo-1 antibody and ground glass opacity in HRCT were significantly high in PM-ILD. However honeycoomb appearance (53%:22%) and fibrosis (41%:6%) in HRCT were significantly high in DM-ILD. Interest in aspects of prognosis including initial steroid treatment response in HRCT were favorable in PM-ILD. There were statistically significant association between normal level of CPK and usual interstitial pneumonia (UIP) pattern in HRCT in DM-ILD. Such cases had resistance to steroid therapy. Overall interval between steroid and immunosuppressant therapy was significantly shorter in those with DM-ILD. Conclusion: The clinical manifestations between PM-ILD and DM-ILD in Korean patients were not significant different from those of other populations. DM-ILD is more refractory to steroid treatment, expecting in poor prognosis compared with PM-ILD. So immediate intensive immunosuppressive therapy should be considered in DM-ILD.

영화 속의 모성, 영화 밖의 모성

김현숙 ( Hyun-sook Kim ),김수진 ( Soo-jin Kim ) 한국사회사학회 1997 사회와 역사 Vol.52 No.-

This paper tries to examine the structure and history of the maternal discourses and ideology in Korean films. Narrative or melodramatic films could be only reproduced through figuring out d1e morality to unify and idealize contradictory realities, on the one hand, newly constructing the realities in transition, on the otl1er hand. Those films, therefore, are the spheres in which the discourse of dominant ideology compete with the discourse ret1ecting the changing reality. We analyze five films - Miwodo(1968), Guil-so-teum (1985), Fog Pillar (1986), Mr. mamma (1992) and Ghost Mamma (1996) which represent the conflict structure and hist011cal change of maternity. The conflict in maternity occur due to the incongruity between maternal and patriarchal ide ology. The components of maternity(function of birth labour and rearing, and intimacy fron1 rearing) are imposed on mother as ideologically unified in a patriarchal family structure, albeit with the potential to be ruptured. Historically. the conflict has been changed in line with that of family structure and its function. In the 1960s and 1970s those films represent the conjunction of normal family and maternity as dominant discourses, when the bourgeois nuclear family became established through industrialization and urbanization; in the 1980s, disintegration of maternity in nuclear family; and in the 19905, function of maternity underpinned by :1 scenario of romantic love. After all these film discourses reveal fundamental impossibility of an unified and stabilized maternity, on the one hand, a ceaseless exertion to suture a rupture in patriarchy, on the other hand.

農村地域 高血壓患者의 高血壓 管理行態

김현숙(Hyun-Sook Kim),김종연(Jong-Yeon Kim),박기수(Ki-Soo Park),이경수(Kyeong-Soo Lee),감신(Sin Kam) 한국농촌의학 지역보건학회 2003 농촌의학·지역보건 Vol.28 No.1

우회경로를 적용한 다중 비트율 서비스망에서의 호손실 알고리즘

김현숙(Hyun Sook Kim),김형수(Hyoung Soo Kim),박정옥(Jeong Ok Park),정종명(Jong Myoung Joung) 한국통신학회 1998 한국통신학회 학술대회논문집 Vol.1998 No.7

노년의 복 있는 삶에 대한 현상학적 연구

김정선(Kim Jeong-Sun),공수자(Gong Soo-Ja),김현숙(Kim Hyun-Suk),노영희(Rho Young-Hee),김옥현(Kim Ok-Hyun),박경숙(Park Kyung-Sook),선정주(Sun Joenh-Ju) 질적연구학회 2006 질적연구 Vol.7 No.1

Purpose: This study is to understand how the elderly act to maintain their life of bliss(i.e. ‘Bok’) based on their experience. Method: This study was analyzed by Colaizzi’s phenomenological method(1978) with 7 elderly participants who are over the age of 70. Results: The essential meanings of life of bliss in elderly ware as following; Life of having a companion to talk with about inner mind, Life of having well-grown children, Life of living together to an old age, Life of having contentment without greed, Life of being recognized, Active and merry life, and Economically-stabilized life. The conditions for the meaning ware as following; Living a life having priority over children, Pray for bliss, To be faithful to current life, Concerning for others, Making an effort for keeping health, Preparing for own death. Conclusion: According to these result, a heath carer who takes care of elderly should understand that they need to show enormous amount of effort and attitude to keep their bliss of life. The result of this study would provide a direction of nursing intervention of the elderly and the fundamental data in the elderly health promotion program. Also, it is regarded that this research would contribute to the elderly nursing theory development which is adjust to Korean traditional culture throughout expanding the knowledge system of the elderly nursing in Korea in the future.

소아 잠복 결핵 감염 진단에 있어서 투베르쿨린 피부반응 검사와 결핵 특이항원 자극 Interferon-γ 분비능 측정의 비교

전진경,김창기,김현숙,정귀영,인요한,김기환,이택진,전지현,김동수,Chun, Jin-Kyong,Kim, Chang Ki,Kim, Hyun Sook,Jung, Ghee Young,Linton, John A.,Kim, Ki Hwan,Lee, Taek Jin,Jeon, Ji Hyun,Kim, Dong Soo 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.9

목 적 : 결핵 감염 관리에 있어서 잠복 결핵 감염을 찾아 내어 예방적 화학요법을 시행하는 것은 주요 핵심이다. 결핵에 노출된 소아에서 잠복 결핵 감염 진단을 위해 투베르쿨린 피부반응과 최근 널리 쓰이기 시작한 체외 검사법으로 결핵 특이항원 자극에 의한 T 세포의 $IFN-{\gamma}$ 분비능 측정 (QFT-G IT)이 있다. 잠복 결핵 감염 진단에 있어 두 검사법의 차이를 알아보고자 본 연구를 진행하였다. 방 법 : 2006년 10월 1일부터 2007년 4월 30일까지 6개월 간 총 111명의 소아를 대상으로 투베르쿨린 반응과 QFT-G IT 검사를 시행하였고, 동일 기간 내인 2개월 간 진단 된 성인 결핵 환자 29명에서 동일한 검사 결과를 후향적으로 알아보았다. 결 과 : 결핵 환자와의 가까운 접촉력을 주소로 내원한 무증상의 환자 33명 중 15% (5명)에서 QFT-G IT 검사 양성 소견을 보였고, 투베르쿨린 피부반응은 42% (14명)에서 양성결과를 보여 두 검사 간의 일치율은 낮았다(${\kappa}=0.39$). 성인 결핵 환자에서 QFT-G IT 양성율은 86.2%였고, 결핵균 배양 검사 양성율은 48.2%였다. 배양검사 양성이면서 QFT-G IT 음성이었던 환자는 12.5%였다. 결 론 : 소아에서 잠복 결핵 감염을 진단함에 있어 가족력을 근저에 둔 투베르쿨린 피부반응 검사를 시행하되 접촉력이 불분명하거나 지속적이지 않았을 경우 혹은 BCG 접종 효과로 의심되는 경우 결핵균 특이항원 자극 $IFN-{\gamma}$ 분비능 측정이 보조적 수단으로 사용 될 수 있을 지는 아직 확실하지 않으며 향후 수년 간 다 기관 연구가 필요하다. Purpose : Surveillance for detecting and managing latent tuberculosis infection (LTBI) is a key component of tuberculosis control. The classic surveillance tool, the tuberculin skin test (TST), may have some limitations when used in the Bacillus Calmette-$Gu{\acute{e}}rin$ (BCG)-vaccinated population. The object was to perform a blood test $QuantiFERON^{(R)}$-TB Gold In Tube (QFT-G IT) based on the detection of interferon-$\gamma$ ($IFN-{\gamma}$) released by T cells in response to Mycobacterium tuberculosis-specific antigens, and to compare the efficacy of this new diagnostic tool for LTBI with that of TST. Methods : For six months, between October 1, 2006 and April 30, 2007, data were collected from 111 patients under 15 years of age at Severance Children's Hospital. TST and QFT-G IT tests were performed with children with or without contact histories of tuberculosis. In addition to these tests, we examined comparative data from 29 adults who had tuberculosis, to detect false negative rates in the QFT-G IT method. Results : Thirty-three children had household contact histories. In this group, 15% and 42% of cases were found to be positive using the QFT-G IT assay and TST, respectively. Agreement was low between these two tests (${\kappa}=0.39$). In the adult active tuberculosis group, the QFT-G IT false negative rate defined as a positive culture and a negative QFT-G IT result was 12.5%. Conclusion : In diagnosing LTBI in children, the usefulness of a whole-blood $IFN-{\gamma}$ assay employing TB-specific antigens will be revealed only by examining additional longitudinal clinical data; this study serves as a starting point in that process.