다결정 Si기판 위에서의 Co/Ti 이중층의 실리사이드화

권영재,이종무,배대록,강호규,Kwon, Young-Jae,Lee, Jong-Mu,Bae, Dae-Lok,Kang, Ho-Kyu 한국재료학회 1998 한국재료학회지 Vol.8 No.7

P가 고농도로 도핑된 다결정 Si 기판 위에 Co/Ti 이중층막을 스퍼터 증착하고 급속열처리함으로써 얻어지는 실리사이드 층구조, 실리사이드막의 응집, 그리고 도펀트의 재분포 등을 단결정 Si 기판 위에서의 그것들과 비교하여 조사하였다. 다결정 Si 기판위에 형성한 Co/Si 이중층을 열처리할 때 단결정 기판에서의 경우보다 $CoSi_2$로의 상천이는 약간 더 낮은 온도에서 시작되며, 막의 응집은 더 심하게 일어난다. 또한, 다결정 Si 기판내의 도펀트보다 웨이퍼 표면을 통하여 바깥으로 outdiffusion 함으로써 소실되는 양이 훨씬 더 많다. 이러한 차이는 다결정 Si 내에서의 결정립계 확산과 고농도의 도펀트에 기인한다. Co/Ti/doped-polycrystalline si의 실리사이드화 열처리후의 층구조는 polycrystalline CoSi2/polycrystalline Si 으로서 Co/Ti(100)Si을 열처리한 경우의 층구조인 Co-Ti-Si/epi-CoSi2/(100)Si 과는 달리 Co-Ti-Si층이 사라진다. Silicide layer structures, agglomeration of silicide layers, and dopant redistributions for the Co/Ti bilayer sputter-deposited on the P-doped polycrystalline Si substrate and subjected to rapid thermal annealing were investigated and compared with those on the single Si substrate. The $CoSi_2$ phase transition temperature is higher and agglomeration of the silicide layer occurs more severely for the Co/Ti bilayer on the doped polycrystalline Si substrate than on the single Si substrate. Also, dopant loss by outdiffusion is much more significant on the doped polycrystalline Si substrate than on the single Si substrate. All of these differences are attributed to the grain boundary diffusion and heavier doping concentration in the polycrystalline Si. The layer structure after silicidation annealing of Co/ Tildoped - polycrystalline Si is polycrystalline CoSi,/polycrystalline Si, while that of Co/TiI( 100) Si is Co- Ti- Si/epi- CoSi,/(lOO) Si.

Co/Ti(100)Si 이중층을 이용한 에피텍셜 Co 실리사이드의 형성

권영재,이종무,배대록,강호규,Kwon, Young-Jae,Lee, Chong-Mu,Bae, Dae-Lok,Kang, Ho-Kyu 한국재료학회 1998 한국재료학회지 Vol.8 No.6

단결정 Si기판위의 Co/Ti 이중층으로부터 형성된 Co 실리사이드의 에피텍셜 성장기구에 대하여 조사하였다. 실리사이드화 과정중 Ti원자들이 저온상의 CoSi결정구조의 tetrahedral site들을 미리 점유해 있음으로 인하여, $CoSi_{2}$ 결정구조로 바뀌는 과정에서 Si원자들이 나중에 제위치를 차지하기 어렵게 되는 효과 때문이다. 그리고 Ti중간층은 반응의 초기단계에 Co-Ti-O 삼원계 화합물을 형성하는데, 이 화합물은 실리사이드화 과정중 반응 제어층으로 작용하여 에피텍셜 실리사이드 형성에 중요한 역할을 한다. 최종 열처리 층구조 Ti oxide/Co-Ti-Si/epi/$Cosi_{2}$(100) Si 이었다. The formation mechanism of the epitaxial cobalt silicide from Co/Ti/OOO) Si structure has been investigated. The transition temperature of CoSi to CoSi, was found to increase with increasing the Ti interlayer thickness, which may be owing to the occupation of the tetrahedral sites by Ti atoms in the CoSi crystal structure as well as the blocking effect of the Ti interlayer on the diffusion of Co. Also, the Co- Ti-O ternary compound formed at the metal! Si interface at the begining of silicidation, which seems to play an important role in epitaxial growth of Co silicide. The final layer structures obtained after a rapid thermal annealing of the Cot Ti/( 100) Si bi-layer structure turned out to be Ti oxide/Co- Ti-Si/epi-$CoSi_2$/OOO)

창문 부자재에 따른 기밀성 연구

권영재(Young Jae Kwon),이종호(Jong Ho Lee),박종준(Jong Jun Park),김영일(Young Il Kim),정광섭(Kwang Sup Chung) 대한설비공학회 2016 대한설비공학회 학술발표대회논문집 Vol.2016 No.6

분리 가능한 지대주를 갖는 치아 임플란트의 기구 및 구조적 안정성 해석

권영재(Kwon Young Jae),오선함(Oh Seon Ham),이종선(Chong Sun Lee) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12

라즈베리파이를 이용한 자동 블라인드 제어 A.B.C (자동 블라인드 컨트롤러)

고태화 ( Tae-hwa Go ),권영재 ( Young-jae Kwon ),김남윤 ( Nam-yeoun Kim ),박목은 ( Mok-eun Park ),이은서 ( Eun-ser Lee ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.2

본 논문에서 구현한 자동 블라인드 제어 A.B.C는 라즈베리파이와 어플리케이션의 소켓통신을 활용한 블라인드 컨트롤 프로그램으로서 어플리케이션에서 신호를 송신하면 그에 따른 명령을 수행하여 조도 값의 크기나 사용자의 목적에 따라 블라인드를 조절할 수 있도록 설계한 프로그램이다.

한국인의 Gut Quotient 측정 척도 개발

최윤진 ( Yoon Jin Choi ),조재호 ( Jae Ho Cho ),이동호 ( Dong Ho Lee ),송동진 ( Dong Jin Song ),권영재 ( Young Jae Kwon ),백성민 ( Sung Min Baek ),김양진 ( Yang Jin Kim ),장민호 ( Min Ho Jang ),이동한 ( Dong Han Lee ),박하영 ( Ha Y 대한소화기학회 2019 대한소화기학회지 Vol.73 No.6

목적: 장 건강은 그 중요성에도 불구하고 일반인이 전문 의료인의 진단을 받기 전에는 장 건강 상태를 스스로 확인하기 어렵다. 이에 체계적이고 보완·발전된 형태의 ‘한국인의 Gut Quotient 측정 척도(GQ)’를 개발하고자 하였다. 본 연구는 일반인들의 주관적인 장 관련 증상을 눈으로 확인할 수 있는 점수로 제공하는 것을 목표로 한다. 대상 및 방법: 장 건강 자가진단표인 장 건강 지수 14개 항목을 토대로 하여, Rome Ⅲ & Ⅳ 11개, IBS-SSS 7개, IBS-QoL 34개 항목을 더하여 구성한 66개의 초기 항목에 4개의 신규항목을 추가하여 총 70개 항목에 대한 내용 타당성을 검증하였고, 이를 통하여 15개 항목을 도출하였다. 추가로, 장에 대하여 현재 체감하고 있는 전반적인 상태 측정을 위한 항목으로 위장 장애 증상을 평가하는 GOS를 수정 반영하고, 변의 상태에 대한 탐색적 평가 항목으로서 Rome Ⅲ 설문 항목을 수정 반영하여, 최종적으로 총 17개의 GQ 척도 항목을 선정하였다. GQ 척도 항목에 대한 신뢰성과 타당성을 검증은 전국의 성인 남녀를 대상으로 진행되었으며, 총 1,120표본(명)의 유효 응답을 최종 분석에 이용하였다. 결과: 개발된 GQ 척도는 탐색적 요인 분석을 통하여 15개 척도 항목으로부터 내적 일관성을 보여주는 3개의 구성 요인이 추출되었으며, 각 요인의 유사성을 고려하여 각각 ‘지각된 장 불편감’, ‘배변 불편감’, ‘배변 조절 불편감’으로 명명하였다. 3개 요인을 구성하는 15개 척도 항목은 각각 5점 척도로, 현재 주관적으로 체감하고 있는 전반적인 장의 상태는 7점 척도로 평가를 진행하고, 계산식에 의하여 100점을 만점으로 환산된 점수를 제공하도록 구성하였다. 3개의 구성 요인이 배변 빈도에 미치는 영향을 분석한 결과, ‘지각된 장 불편감’ 요인, ‘배변 불편감’ 요인은 배변 빈도와 양의 상관관계로 나타났으며, ‘배변 조절 불편감’ 요인은 음의 상관관계를 나타내는 것으로 분석되어 예측 타당성이 입증되었다. 결론: GQ를 사용하여 측정한 결과를 지속적으로 누적한다면, 장기적으로는 한국인의 장 건강 상태를 측정하는 대표적인 지수로 자리매김할 수 있을 것이다. 다만, 이는 의학적인 판단의 절대적 기준으로는 사용할 수 없으며, 단지 자신의 주관적으로 느껴지는 장의 상태를 비교해볼 수 있는 자료라는 제한이 있다. Background/Aims: The aim of this study was to develop ‘Koreans Gut Quotient Measurement Scales (GQ)’, in which Koreans respond to questionnaires about the subjective feelings and symptoms of their intestinal health status. Methods: Among 66 items pooled from previous studies and 4 items that were added following a focus group interview, 15 items were chosen using the Delphi survey. The content validity was evaluated using the content validity ratio. Data collected from 1,120 people from the general public in Korea were analyzed to verify the reliability and validity of GQ. Results: The finalized GQ consisted of 17 items (including two exploratory measurement items) that were classified into three independent factors based on exploratory factor analysis (EFA): ‘perceived intestine discomfort’, ‘bowel movement discomfort’, and ‘bowel movement control discomfort’. The discriminant and convergent validity of GQ were identified using EFA, reliability test, and confirmatory factor analysis. In addition, the criterion-related validity of GQ was identified using correlation and multiple regression analysis. Conclusions: The GQ, which is a simplified intestinal health index developed based on an easy questionnaire for the public to understand, can be used as a tool for the public to evaluate their own intestinal health and determine when to visit clinics. (Korean J Gastroenterol 2019;73:341-349)

한국 수의학자의 동물 항원에 대한 감작과 알레르기 증상

박홍석 ( Hong Suk Park ),심정우 ( Jungwoo Shim ),조은영 ( Eun Yeong Cho ),명찬아 ( Chana Myoung ),이소정 ( Sojung Lee ),권영재 ( Young Jae Kwon ),이상민 ( Sang Min Lee ),박정웅 ( Jeong-woong Park ),정성환 ( Sung Hwan Jeong ),이상 대한천식알레르기학회(구 대한알레르기학회) 2016 Allergy Asthma & Respiratory Disease Vol.4 No.6

Purpose: Veterinary researchers are exposed to variable animal allergens. However, sensitization to them and allergic symptoms during exposure to them in this group are not sufficiently evaluated worldwide, especially in Korea. The objective of this study is to evaluate sensitization to animal allergens and allergic symptoms during exposure to them in Korean veterinary researchers. Methods: Thirty-two veterinary researchers who participated in the 2016 annual symposium of the Korean Society of Veterinary Science were asked to answer questionnaires regarding allergic symptoms during animal exposure and underwent skin prick tests for animal allergens. Animal allergens consisted of chicken feather and 10 mammals, epithelia as well as cow`s milk, hen`s egg, and 7 animal types of meat. Results: There were 13 subjects who complained of allergic symptoms during exposure to certain animal epithelia and 19 who did not. Between the 2 groups, there were no differences in age, sex, underlying allergic disease, family history of allergy, current occupation and its duration, numbers and specie of contact animals, or daily contact time. Meanwhile, the sensitization rates to mouse, horse, rabbit, and guinea pig were significantly higher in the symptomatic group. Rhinoconjunctivitis symptoms were the most common allergic symptoms related to animal exposure were most common followed by dermatologic symptom, and symptom of lower respiratory tract. Conclusion: We found that sensitizations to some animal epithelia were more frequent in Korean veterinary researchers with allergic symptoms during exposure to animal compared to those without it, and their most common symptoms were rhinoconjunctivitis symptoms. (Allergy Asthma Respir Dis 2016:4:406-414)

디지털 영상매체를 사용한 전통색채 재현 연구

박승옥(Park Seung Ok),김홍석(Kim Hong Suk),박진희(Park Jin Hee),박철호(Park Chul Ho),유종우(Ryu Jong Wu),윤흥순(Yoon Heung Soon),정민호(Jung Min Ho),양진석(Yang Jin Suk),권영재(Kwon Young Jae) 한국색채학회 2004 한국색채학회 학술대회 Vol.2004 No.6

精神疾患에 대한 非精神科 醫師의 槪念 및 態度 調査

權永宰 大韓神經精神醫學會 1979 신경정신의학 Vol.18 No.3

The author investigated the opinions and attitudes of nonpsychiatric physicians toward the mental illness in comparison with those of public and considered the influence of the psychiatric education on the opinion and attitude toward the mental illness. The studied group consisted of 287 nonpsychiatricphysicians who work at 16 general hospitals (6 in Seoul, 10 in other areas). The control group was divided into two subgroups; 292 people residing in Seoul, and 145 people who had at least high school education among 292 people. The study was done by the questionaire form devised by Star and modified by Terashima. The results are as follows: 1) The identification rates of physician group for Star's 3 case stories were 96.9% for paranoid schizophrenia, 77.7% for simple schizophrenia and 50.5% for alcoholism, and were in general higher than those of public. 2) About half in both groups understood psychosis and neurosis as a psychological problem, however, the physician group understood neurosis as physical problem comparatively less than the public did. 3) About half of the physician group stated that they would consider mental illness as 'shame' and conceal the mental ills in their family members if one of their family members were a mental case. 4) As far as treatment is concerned, 63.1% of the physician group thought mental illness as 'treatable' and also they expressed much more positive response than public toward treatment in a mental hospital. 5) As to prognosis of the mental illness, the physican group showed more pessimistic than the public did. 6) In general, the attitudes toward psychiatrists were positive. 7) The author feels that the identification for mental illness may be increasing by the general or specific education. However, the study showed that the possibility of sociocultural factors influencing attitudes toward the mental illnesses can not be excluded.

정신과 응급환자에 대한 Chlorpromazine과 ????????? 근주의 효과비교

권영재,백인호 大韓神經精神醫學會 1979 신경정신의학 Vol.18 No.4

In this study, a comparative evaluation on clinical efficacy between parenteral chlorpromazine and ??????? for acute psychotics brought to the emergency psychiatric unit was made. Subjects were consisted of 39 cases of psychotics including 21 males, 18 females they were under double-blind procedure, given single injections of 50 mgms of chlorpromazine (20 cases) and 5 mgms of ??????? (19 cases) separately. The effects were evaluated globally for overall effects as well as by the Brief Psychiatric Rating Scale (BPRS) for target signs and symptoms. The results were as follows 1. Of the 20 cases who received chlorpromazine, 17 cases (85%) were noted to be their symptoms under led controlled or partially under control led. 2. Of the 19 cases who were administered with ???????, 11 cases (58%) become under or partially under controlled while 6 cases (32%) shows few signs of response including 2 cases (10%) were noted to be even worse. 3. Results of BPRS evaluation was applied to them 60 min. after the injection showed the reduction of the total mean BPRS scores for the signs and symptoms. When compared the two group on the reduction chlorpromazine group was significantly remarkable than ??????? group. 4. Covariant analysis of the data for 60 min. after the injections chlorpromazine was also noted to be significantly superior than ??????? partially for the control of somatic coecern, conceptual disorganization and unusual thought content. Results of the above mention comparison suggests that chlorpromazine were felt to be the drug of choice in psychiatric emergencies requiring the use of an antipsychotic agent.