색 분포 재배열을 이용한 색 분별력 향상 색역 사상

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.

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.

이벤트 기반 웹서비스를 이용한 워게임 시뮬레이터 제작

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.

일개지역 구급활동 중 병원 전 심정지 및 약물중독 환자 분석 - 노인대 비노인의 차이를 중심으로 -

이재민,윤형완,Lee, Jae-Min,Yun, Hyeong-Wan 사단법인 한국응급구조학회 2010 한국응급구조학회지 Vol.14 No.3

Purpose: The purpose of this study is to determine potential differences in pre-hospital cases of cardiac arrest and drug Intoxication between elderly group and non-elderly group on local emergency activity sites of rescue 119 team for those cases, so that it can provide useful reference materials for a system of corresponding emergency medical services. Methods: Patients with cardiac arrest and drug intoxication in the elderly and the non-elderly group were analyzed by analyzing the Ambulance Run Report for 3 years from January 2007 to December 2009. Results: According to analysis on potential differences between elderly and the non-elderly group, it was found that there was no significant difference between elderly cases (evacuated to hospital due to cardiac arrest and drug poisoning) and non-elderly cases in year of onset (p = .247), quarter of onset (p = .813), sex (p = .235), consciousness state (p = .126), place of onset (p = .215) and number of first aid services (applied to emergency cases) respectively, but there were significant differences between elderly cases and non-elderly cases in guardian availability (p = .042), time zone of onset (p = .050), distance from the site of onset (p = .278), type of onset (p = .000), number of first aid services depending on distance of evacuation (p = .008) and effectiveness of emergency care (p = .003) on statistical basis. Conclusion: It is important to establish a system of early emergency case reports for rational emergency case management with lower mortality; shorten distance from the site of onset at each time zone of onset in emergency cases; employ more emergency team members; facilitate firsthand / secondhand medical instructions for emergency teams in specialized emergency care depending on distance of evacuation for each kind of onset (elderly group vs. non-elderly group); and improve rate of resuscitated emergency cases by extending the scope of works for emergency medical technicians into wider applications, so that it will be possible to take timely and appropriate measures for emergency settings of ever-increasing aged population in near future.

선회와류식-SBR(하)

이재민,Lee, Jae-Min 한국환경기술인연합회 2006 환경기술인 Vol.23 No.8

확공형 마이크로 파일의 지지력 해석

이재민,김두환,Lee,Jae-Min,Kim,Doo-Hwan 한국방재학회 2014 한국방재학회논문집 Vol.14 No.4

기존 마이크로 파일의 경우 전조나사 강봉과 그라우트와의 부착력 및 그라우트와 지반과의 주면마찰력에 의해 내하성능이 결정된다. 그러나 강봉과 그라우트 간의 부착성능이 가지는 취성파괴 특성과 낮은 내하성능에 의해 천공 깊이가 깊어지는 문제점을 갖고 있다. 따라서 본 연구에서는 기존 마이크로 파일의 지지성능을 개선하고 경제성을 향상시키기 위하여 perfobond rib를 구비한 강봉과 그라우트와 지반간의 주면마찰력을 증가시키기 위해 부분확공부를 설치하는 마이크로 파일을 제안하고, 거동 및 파괴특성에 대한 평가를 수행하였다. 현장 인발시험 결과 부분 확공하여 시공된 지반부 전단키에 의한 내하성능은 상당히 증가된 것으로 평가되었다. The load-carrying capacity of a conventional micropile is determined by the adhesion between the rolled screw thread and the grout, and the skin friction force between the grout and the ground. One of the disadvantage of the conventional micropiles is that the boring depth can be deeper because of low load-carrying capacity and the brittle failure behavior between rolled screw thread and grout. Therefore, it is necessary to develop an advanced feature of a micropile system which efficiently increases load-carrying capacity with a reasonable cost. This study proposes an advanced type of a micropile system. The proposed micropile system consists of perfobond ribs installed steel rod to improve shear capacity between the thread and the grout, and partially expanded drill holes to increase resistance capacity between the grout and the ground. Through on-site pullout tests, it was found that load-carrying capacity increased significantly in the proposed micropile system, due to the shear keys created by the partially expanded drill hole. The proposed micropile system was also evaluated to be much more economical in a case study.

선회와류식 - SBR(上)

이재민,Lee, Jae-Min 한국환경기술인연합회 2006 환경기술인 Vol.23 No.7

치아표면 처리에 따른 치면열구전색재의 전단강도에 관한 비교실험연구

이재민,신승철 ( Jae Min Lee,Seung Chul Shin ) 대한예방치과·구강보건학회 1994 大韓口腔保健學會誌 Vol.18 No.1

비휘발성 상변화메모리소자에 응용을 위한 칼코게나이드 $Ge_1Se_1Te_2$ 박막의 특성

이재민,정홍배,Lee, Jae-Min,Chung, Hong-Bay 대한전기학회 2006 전기학회논문지C Vol.55 No.6

In the present work, we investigate the characteristics of new composition material, chalcogenide $Ge_1Se_1Te_2$ material in order to overcome the problems of conventional PRAM devices. The Tc of $Ge_1Se_1Te_2$ bulk was measured $231.503^{\circ}C$ with DSC analysis. For static DC test mode, at low voltage, two different resistances are observed. depending on the crystalline state of the phase-change resistor. In the first sweep, the as-deposited amorphous $Ge_1Se_1Te_2$ showed very high resistance. However when it reached the threshold voltage(about 11.8 V), the electrical resistance of device was drastically reduced through the formation of an electrically conducting path. The phase transition between the low conductive amorphous state and the high conductive crystal]me state was caused by the set and reset pulses respectively which fed through electrical signal. Set pulse has 4.3 V. 200 ns. then sample resistance is $80\sim100{\Omega}$. Reset pulse has 8.6 V 80 ns, then the sample resistance is $50{\sim}100K{\Omega}$. For such high resistance ratio of $R_{reset}/R_{set}$, we can expect high sensing margin reading the recorded data. We have confirmed that phase change properties of $Ge_1Se_1Te_2$ materials are closely related with the structure through the experiment of self-heating layers.

아날로그 회로의 난검출 고장을 위한 효과적인 진단 및 테스트 기법

이재민,Lee, Jae-Min 대한임베디드공학회 2009 대한임베디드공학회논문지 Vol.4 No.1

Testing of analog(and mixed-signal) circuits has been a difficult task for test engineers and effective test techniques to solve these problems are required. This paper develops a new technique which increases fault detection and diagnosis rates for analog circuits by using extended MTSS (Modified Time Slot Specification) technique based on MTSS proposed by the author. High performance current sensors with digital outputs are used as core components for these techniques. A fault diagnosis structure with minimal hardware overhead in ATE is also described.