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이재민,김경만,이채수,이철희,하영호,Lee, Jae-Min,Kim, Kyeong-Man,Lee, Chae-Soo,Lee, Cheol-Hee,Ha, Yeong-Ho 대한전자공학회 1999 電子工學會論文誌, S Vol.s36 No.10
많은 칼라 장치에서 동일한 영상을 출력했을때, 재현된 색들은 장치 사이의 색역 차로 인해 많은 차이를 나타내므로 이를 개선하기 위한 많은 색역 사상 방법들이 제안되었다. 본 논문에서는 기존의 장치 의존적 색역 사상의 단점인 압축 사상에서의 불필요한 왜곡을 줄이고 절단 사상에 의한 색 분별력 저하를 최소화시키기 위해 색 분포 재배열을 이용한 색 분별력 향상 색역 사상 방법을 제안한다. 제안한 방법은 입력 영상의 색을 색 분포라는 3차원 배열로 구성한다. 색 분포의 최대치가 출력 장치 색역의 경계치보다 작다면 같은 색으로 사상을 한다. 반대로 크다면 색역 내부에 색역 외부의 색을 재배열하여 사상을 한다. 결과적으로 모니터에 나타난 영상을 색과 비슷하고 채도가 높은 색이 선형적으로 변하는 영역에서 색의 분별력이 높은 영상을 프린터로 재현할 수 있었다. When the same image is displayed in many different devices, the reproduced colors are not same due to the differences in the gamut between devices. Therefore, many gamut mapping method were proposed to solve this problem. In this paper, color discrimination enhancement gamut mapping method using color distribution rearrangement is proposed to reduce the unnecessary distortions by compression mapping and to minimize the decrease of color discrimination by clipping method. The proposed method constructs color distribution, the 3-dimension array of input image's colors. if the maximum of color distribution is within the boundary of printer gamut. the colors are mapped to the same colors. Otherwise, out-of-gamut colors are compressed into the printer gamut with minimum distortion. Consequently, the printer output image was highly consistent with the corresponding monitor image and had an enhanced color discrimination in region where high chroma varied linearly.
이재민,김병철,김태섭,이강선,Lee, Jae-Min,Kim, Byoung-Chul,Kim, Tae-Sup,Lee, Kang-Sun 한국시뮬레이션학회 2010 한국시뮬레이션학회 논문지 Vol.19 No.1
As future warfare becomes network-centric, war-game simulators require high interoperability between networked forces and dynamic reconfiguration in accordance with war events. In this paper, we propose an event-driven methodology to develop dynamic war-game simulations. Federates are developed by event-driven web services. The event-driven web services consistently sense war events and response them only if they are interested. By the sense-and-response mechanism and asynchronous event processing, we are able to save simulation time. An Anti-Surface-Warfare simulator is constructed to demonstrate the methodology and suggests that event-driven web services are efficient to model and simulate warfare where numerous events are generated from hardware systems and people dispersed on the network.
급성 골수성 백혈병 소아환자에서 초음파 검사에서 낭미충증으로 오인된 표피 포도알균에 의한 파종 감염 병변이 발생한 증례
이재민,최준식,유건희,김예진,김선자,Lee, Jae Min,Choi, Joon-Sik,Yoo, Keon Hee,Kim, Yae-Jean,Kim, Sun-Ja 대한소아감염학회 2020 Pediatric Infection and Vaccine Vol.27 No.2
표피 포도알균은 사람 피부에 있는 정상균이나, 체내 이물질을 가진 사람이나 면역 저하자에게는 심각한 감염을 일으킬 수 있다. 13세 남자가 발열, 근육통으로 입원하였고 두피, 팔과 다리에 통증이 있는 결절성 병변이 만져졌다. 혈액검사에서 범혈구 감소증과 모세포 80% 소견을 보였고 급성 골수성 백혈병으로 진단되었다. 전신 자기공명영상 검사에서 가장자리 조영 증강을 보이는 다발 낭성 병변이, 초음파 검사에서 에코성 낭성 병변과 그 내부의 에코성 결절이 팔과 다리의 근육 내부에서 관찰되어, 낭미충증이 강력히 의심되었다. 그러나 초음파 유도하 조직 검사에서 농양이 확인되었고, 조직 배양검사에서 표피 포도알균이 동정되었다. 저자들은 백혈병 환자에서 낭미충증으로 오인되었던 표피 포도알균에 의한 전신 다발 병변이 발생한 예를 경험하였기에 보고하는 바이다.
장기모니터링을 통한 지하수계의 이해 - 광릉소유역 사례 연구
이재민,우남칠,Lee, Jae-Min,Woo, Nam-C. 한국지하수토양환경학회 2012 지하수토양환경 Vol.17 No.4
Effects of climate change on groundwater system requires understanding the groundwater system in temporal and spatial scales through the long-term monitoring. In this study, the spatio-temporal variations of groundwater were analyzed through the continuous observation of water level, electrical conductivity (EC) and water temperature with automatic data-loggers and sampling in a Gwangneung catchment, Korea, for the four years from 2008 to 2011. Groundwater monitoring were performed at the nest-type wells, MW1 and MW2, located in upsteam and downstream of the catchment, respectively. During the survey period, both the total amount of annual precipitation and the frequency of concentrated rainfall have increased resulting in the elevation of runoff. Water level of MW1 showed no significant fluctuations even during the rainy season, indicating the confined groundwater system. In contrast, that of MW2 showed clear seasonal changes, indicating the unconfined system. The lag-time of temperature at both wells ranged from one to three months depending on the screened depths. Results of chemical analyses indicated that major water compositions were maintained constantly, except for the EC decreases due to the dilution effect. Values of the stable-isotope ratios for oxygen and deuterium were higher at MW2 than MW1, implying the confined system at the upstream area could be locally developed.
파수영역에서 모멘트 방법을 이용한 새로운 역산란 방법 , II : 수치계산
이재민,김세윤,나정웅,Lee, Jae-Min,Kim, Se-Yun,Ra, Jung-Woong 대한전자공학회 1988 전자공학회논문지 Vol. No.
본 논문에서는, 전편 논문인 I부에서 제시한 파수영역에서의 역산란 방법을 사용한 비균일한 유전체 기둥의 직사각형 단면내의 주어진 유전율 분포를 재구성 하였다. 수치계산 결과 산란전계의 측정위치와 유전체 단면내의 유전율 분포에 거의 상관없이 사용파장에 비해 훨씬 작은 정도로 주어진 유전율 분포를 재구성 할 수 있음을 보였다. In this paper, the reconstruction of complex permittivity distribution on a rectangular cross section of inhomogeneous dielectric cylinders is performed by employing the spectral inverse scattering scheme presented in the part I of these companion papers. Numerical simulations provide the superresolution to the permitivity profiles nearly regardless of the measurement locations of the scattered field and the permittivity distributions on the cross section.
육가공 제품의 저장 및 조리방법이 지질산패에 미치는 영향
이재민,조정순 ( Jae Min Lee,Jung Soon Cho ) 한국유화학회 1995 한국응용과학기술학회지 Vol.12 No.1
Ham, sausage and bacon were treated with common household processing techniques including refrigerated storage(0, 14, 28 days) and cooking(pan-frying, microwaving, boiling). Lipid oxidation was evaluated by measuring fatty acid composition, malonaldehyde(MA), TBA values and by measuring fluorescent products. Major fatty acid composition were oleic acid and followed respectively palmitic acid, stearic acid, linoleic acid, linolinic acid. There was no significant difference in fatty acid composition by cooking method but there was a tendency of being increased of unsaturated fatty acid during 28days storage. Ma, TBA and fluorescent products showd a tendency of being increased continually according to storage days rather than cooking method.
이재민,이병선,우남칠,Lee, Jae-Min,Lee, Byung-Sun,Woo, Nam-Chil 한국지하수토양환경학회 2010 지하수토양환경 Vol.15 No.6
As a preliminary survey to improve efficiency of well-based permeable reactive barrier system for groundwater remediation, this site-scale study was carried to identify the flowpaths and controlling factors of plume at a remediation site in Suwon City, Korea. A total of 22 monitoring wells were installed as a grid system in the $4m{\times}4m$ square area by 1-m interval. For the groundwater characterization, various tests were performed including water-level monitoring, water sampling & analysis, pumping and slug tests, and tracer tests. The aquifer appeared to be unconfined with hydraulic conductivities (K) ranging from $2.6{\times}10^{-4}cm/s$ to $9.5{\times}10^{-3}cm/s$. The average linear velocity of groundwater was estimated to be $2.94{\times}10^{-6}m/s$, and the longitudinal dispersivity of a conservative tracer to be $5.94{\times}10^{-7}m^2/s$. Groundwater plume moves preferentially through the high-K zones, and the relatively high ion concentrations along the low-K zones implying deterred groundwater flow. Consequently, the spatial variation of hydraulic conductivity caused by aquifer heterogeneity and anisotropy appears to be the most important factor to maximize the effect of plume treatment system for application of in-situ groundwater remediation techniques.
이재민,홍권의,Lee, Jae-Min,Hong, Kwon-Eui 대한약침학회 2006 Journal of pharmacopuncture Vol.9 No.2
Object : This study is designed in order to evaluate oriental medical treatment of ankylosing spondylitis. Methods : The authors observed patient by ROM & VAS for operated acupuncture treatment, herbal medicine treatment and physiotherapy Conclusion : 1. Ankylosing spondylitis patient of this case is caused by taiyang channel warm-heat evi. 2. Ankylosing spondylitis patient by taiyang channel warm-heat evi is evaluated by acupuncture treatment. ; SP3, S36, LIll, LI4, S40. 3. Ankylosing spondylitis patient by taiyang channel warm-heat evi is evaluated by Hervbal medication. ; Gamikangwhalsungsub-Tang.