고분자 기판위에 다층 구조의 박막형 보호층을 적용한 투습률 향상

김종환,한진우,김영환,서대식,Kim Jong-Hwan,Han Jin-Woo,Kim Young-Hwan,Seo Dae-Shik 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.3

In this paper, the inorganic-organic thin film encapsulation layer was newly adopted to protect the organic layer from moisture and oxygen. Using the electron beam, Sputter and Spin-Coater system, the various kinds of inorganic and organic thin-films were deposited onto the Ethylene Terephthalate(PET) and their interface properties between organic and inorganic layer were investigated. In this investigation, the SiON and Polyimide(PI) layer showed the most suitable properties. Under these conditions, the WVTR(water vapour transition rate) for PET can be reduced from level of $0.57\;g/m^2{\cdot}day$ (bare subtrate) to $1{\times}10^{-5}\;g/m^2{\cdot}day$ after application of a SiON and Polyimide layer. These results indicates that the SiON/PI/SiON/PI/PET barrier coatings have high potential for flexible organic light-emitting diode(OLED) applications.

로봇 ··· 상상 속에서 차세대 성장산업 핵심으로

김종환,Kim, Jong-Hwan 한국과학기술단체총연합회 2004 과학과 기술 Vol.37 No.5

삼기층(三紀層) 퇴적암(堆積岩) 중(中) 비석(沸石)의 산출상태(産出狀態)

김종환,문희수,Kim, Jong-hwan,Moon, Hee-Soo 대한자원환경지질학회 1978 자원환경지질 Vol.11 No.2

Of more than 30 varieties of zeolite group minerals, 7 varieties, mordenite, clinoptilolite, natrolite laumontite, stilbite, stellerite and chabazite are identified in Korea, whereas mordenite and clinoptilolite occur in Miocene sediments of small Yonil tertiary basin, east coast of Korea. The basin consists of three separate groups of sediments called Janggi, Gampo and Haseo, which are not correlated stratigraphyically yet. Zeolite occurs alternating with montmorillonite layers in Nuldaeri, Yongdongri and Haseori tuffs of Jahanggi, Gampo and Haseo Groups respectively. Zeolite was formed by diagenesis. of acidic volcanic tuffs.

AIDP 환자(患者)의 한양방(韓洋方) 치료(治療) 1례(例)

김종환,박상욱,장자원,신우진,홍현우,김지윤,최인선,황원덕,Kim Jong-Hwan,Park Sang-Wook,Jang Ja-Won,Sin Woo-Jin,Hong Hyun-Woo,Kim Ji-Yun,Choi In-Sun,Hwang Won-Duek 대한한방내과학회 2003 大韓韓方內科學會誌 Vol.24 No.4

Introduction: Guillain-Barre syndrome(GBS) is defined as a recognizable clinical entity that is characterized by rapidly evolving symmetric limb weakness, a loss of tendon reflexes, absent or mild sensory signs, and variable autonomic dysfunctions. Recently there is an opinion that Acute Inflammatory Demyelinating Polyradiculoneuropathy'(AIDP) is more effective than 'GBS' for the symptoms. These symptoms are applicable to rheumatic arthritis(痺), flaccid paralysis of limb(?) caused by wind, cold and dampness(風, 寒, 濕) from an oriental medical view point. On this, we reported one case that diagnosed as 'complex of rheumatic arthritis(痺) and flaccid paralysis of limb(?)' at our oriental medical hospital. Result: we considered these symptoms as 'complex of rheumatic arthritis(痺), flaccid paralysis of limb(?)'. In accordance with the result, we treated the patient with Chung-Sang Tong-Jung On-Ha(淸上通中溫下). We concluded that external factors such as wind, cold and dampness(風, 寒, 濕) and internal factors like vital energy's disharmony(生氣不調和) affected the patient.

자랑스러운 KSLA인(人) - 김재수

김종환,Kim, Jong-Hwan 한국전문도서관협의회 2011 KSLA bulletin Vol.3 No.-

영상정보에 기초한 전차 자율탐지 및 조준점탐색 연구

김종환,정치정,허미라,Kim, Jong-Hwan,Jung, Chi-Jung,Heo, Mira 한국시뮬레이션학회 2018 한국시뮬레이션학회 논문지 Vol.27 No.2

본 논문은 지상무인전투체계 중의 하나인 무인경전투차량이 RGB 영상정보를 기초로 스스로 전차를 탐지하고 조준점을 산출하는 지능형 표적획득/처리기술의 기초연구이다. 무인 경전투 차량이 전장에서 적 전차와 조우 시, 적 전차를 자율적으로 탐지하고 스스로 조준하는 방법을 개발하기 위해, 영상정보로부터 전차의 주요특징을 식별 및 추출하고, Maximally stable extremal regions, 중간값 필터, k평균 클러스터링 그리고 Morphological filtering의 영상처리기법 및 인공지능 알고리즘을 통해 전차의 외형정보를 추출 및 분석하였으며, 식별된 전차 외형정보를 벡터화하여 전차의 중앙을 지향하는 조준점을 산출하였다. 또한, 본 연구의 성능을 측정하기 위해 선진국들의 주력전차의 영상정보를 수집 및 분석하였고, 제안한 방법의 객관적인 전차탐지 성능은 정확도 91.6%, 정밀도 90.4%, 재현율 85.8% 그리고 F-measure 88.1%의 결과를 보여주었다. 본 연구가 무인전투체계의 지능형 표적획득/처리기술 연구개발에 도움이 되기를 기대한다. This paper presents an autonomous detection and aiming point computation of a battle tank by using RGB images. Maximally stable extremal regions algorithm was implemented to find features of the tank, which are matched with images extracted from streaming video to figure out the region of interest where the tank is present. The median filter was applied to remove noises in the region of interest and decrease camouflage effects of the tank. For the tank segmentation, k-mean clustering was used to autonomously distinguish the tank from its background. Also, both erosion and dilation algorithms of morphology techniques were applied to extract the tank shape without noises and generate the binary image with 1 for the tank and 0 for the background. After that, Sobel's edge detection was used to measure the outline of the tank by which the aiming point at the center of the tank was calculated. For performance measurement, accuracy, precision, recall, and F-measure were analyzed by confusion matrix, resulting in 91.6%, 90.4%, 85.8%, and 88.1%, respectively.

유전자 로봇

김종환,Kim, Jong-Hwan 한국과학기술단체총연합회 2005 과학과 기술 Vol.38 No.5

몬테칼로 시뮬레이션 기반의 다수 지상 연성표적에 대한 최적 조준점 산출

김종환,안남수,Kim, Jong-Hwan,Ahn, Nam-Su 한국시뮬레이션학회 2020 한국시뮬레이션학회 논문지 Vol.29 No.1

본 논문은 드론봇 전투체계를 운용하여 전투전단의 적 보병부대 위치정보를 수집하였을 시, 지휘관이 요구하는 적 부대 피해수준을 충족하면서 적 보병부대를 신속하고 정확하게 타격하기 위하여, 보유한 화력체계의 살상범위를 기초로 최적의 사격발수 및 조준점 위치를 실시간 자동으로 산출하는 인공지능 알고리즘 연구이다. 이를 위해, 100m×200m 크기의 야지 전장환경에서 증강된 소대급 규모의 적 보병부대를 임의로 전개 및 모의하고, 약 15m의 살상범위를 갖는 가상의 화력체계에 대한 모델링을 수행하였으며, 각개 적병사의 무피해/경상 및 중상/사망 등의 피해유형 및 임무수행 가능여부를 모의하기 위하여 연성표적의 피해효과에 적용되는 칼튼피해함수를 적용하고 전장의 불확실성을 모의하기 위하여 몬테칼로 시뮬레이션을 수행하였다. 또한, 지휘관 의도에 부합된 적부대의 피해수준을 달성하기 위하여, 반복적인 모의 및 비지도학습의 k-mean clustering 기법을 적용하여 최적의 사격발수 및 조준점 위치를 0.4초 이내로 산출하였다. 본 연구에서 제안하는 방법은 드론봇 전투체계를 운용하는 대대급 규모의 전투부대에서 '탐지-결심-타격' 의사결정시간의 단축에 기여할 것으로 판단된다. This paper presents a real-time autonomous computation of shot numbers and aiming points against multiple soft targets on grounds by applying an unsupervised learning, k-mean clustering and Monte carlo simulation. For this computation, a 100 × 200 square meters size of virtual battlefield is created where an augmented enemy infantry platoon unit attacks, defences, and is scatted, and a virtual weapon with a lethal range of 15m is modeled. In order to determine damage types of the enemy unit: no damage, light wound, heavy wound and death, Monte carlo simulation is performed to apply the Carlton damage function for the damage effect of the soft targets. In addition, in order to achieve the damage effectiveness of the enemy units in line with the commander's intention, the optimal shot numbers and aiming point locations are calculated in less than 0.4 seconds by applying the k-mean clustering and repetitive Monte carlo simulation. It is hoped that this study will help to develop a system that reduces the decision time for 'detection-decision-shoot' process in battalion-scaled combat units operating Dronebot combat system.

급성기 뇌졸중 환자의 한양방 협진치료에 대한 임상적 고찰

김종환,신우진,장자원,김지윤,민성순,황원덕,Kim, Jong-Hwan,Sin, Woo-Jin,Jang, Ja-Won,Kim, Ji-Yun,Min, Sung-Soon,Hwang, Won-Duek 대한한방내과학회 2004 大韓韓方內科學會誌 Vol.25 No.4

Object : This is a study of acute stage stroke patients designed for comparison of combined Eastern and Western medical treatments and Oriental treatments alone. Methods : 51 patients were diagnosed by Brain-CT and Brain-MRI scan as having suffered stroke. They had entered Dong-eui hospital within seven days of attack, and remained over seven days, all between November 2002 and August 2003. Patients were divided into two groups: a group treated with both Eastern and Western medical treatments, and a group treated only with Oriental medical treatments (but examinations were done and medications were given in hypertension, Diabetes Mellitus and so on). Results : The Eastern-Western medical treatment group showed significant changes in NIHSS. A rate of improvement figure of 24.94% was obtained for the Eastern-Western medical treatment group, and for the Oriental medical group a figure of 7.84% was obtained. Conclusion : The East-West medical treatment group had significant rate of development that measure for NIHSS by treated comparatively dependent patients. And oriental medical treatment group had significant rate of development that measure for NIHSS by treated comparatively independent patients. The NIHSS measure for the Eastern-Western medical treatment group shows a significant rate of improvement for relatively dependent patients, and the NIHSS measure for the Oriental medical treatment group shows a significant rate of development for relatively independent patients.

핵연료 자원개발과 그 전망

김종환,Kim, Jong-Hwan 한국과학기술단체총연합회 1981 과학과 기술 Vol.14 No.7