다중가스 검출을 위한 FPI 어레이 기반 적외선 마이크로스펙트로미터

강현오(Hyun Oh Kang),짜오찌구오(Zhao Zhiguo),이준규(June Kyoo Lee),정호(Ho Jung),김학린(Hak-Rin Kim),공성호(Seong Ho Kong) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7

제안된 Fabry-Perot Interferometer (FPI) 어레이 기반 IR스펙트로미터는 상층부에 FPI 어레이와 하단에 V₂O? 볼로미터 IR 적외선 센서 어레이로 크게 두 부분으로 구성된다. 이 구조에서 다양한 FPI 공진 캐비티의 두께에 의해 특정 공진 파장이 선택되어 진다. 그리고 각각의 볼로미터 IR 디텍터는 IR 파장에 상응하는 투과도를 감지해낸다. 다양한 박막 필터 시뮬레이션 결과를 통해 제작된 FPI 어레이 기반 IR 스펙트로미터는 3~5 ㎛의 적외선 파장대역에서 흡수 스펙트럼을 가지는 CH₄, CO₂, N₂O, CO 가스 검출을 위해 다층 박막 FPI 층의 다층 박막 FPI 층의 투과율을 높였다.

병원뇌파검사질의 운영조사연구

안종민 ( Jong Min Ahn ),강현오 ( Hyun Oh Kang ) 대한임상검사과학회 1998 대한임상검사과학회지(KJCLS) Vol.30 No.2

The purpose of this study is to find out effective ways to improve the operation of EEG Laboratory room. In order to attain this purpose the present status of the rooms`` organization, staff, facilities and performance was surveyed with structured checklist. And also the staff`` s opinion on the problems and improving strategies of EEG Laboratory room was surveyed with structured questionaire. The survey was conducted in 140 general hospitals with EEG room of which 73 hospitals`` data were collected successfully. The data were analyzed by frequencies percentages and x 2 test with SPSS computer program. The major findings of this study were as follows. 1. The average number of EEG rooms are 1.21 of tatal 1.19 of university hospitals and 1.33 of general hospitals. And the average area of EEG rooms is 3.75 pyong(3.3 pyong makes 1m2 ) of total, 3.96 pyong of university hospitals and 3.61 pyong of general hospitals. 2. The average number of EEG lab cases are 1,240 of total 1,659 of university hospitals and 1,111 of general hospitals, while average number of lab items are 4.33 of total, 5.22 of university hospital and 4.06 of general hospitals. 3. The staff of EEG laboratorv rooms are relatively satisfied with .iob itself such as interesting in, achivement of the job. 4. The problems to be solved in priority are inadeguacy of facilities which 22% of respondents suggested and scale of manpower which 11% of respondents suggested, while only 7% of the respondents suggested quality of lab is regquired to be improved. On the basic of these results, this study suggests that hospital administrations would improve the manpower and physical resources of EEG rooms rather than quality level of lab. Taking the importance of EEG lab for patient care into consideration, more investment is required to improve the operation of EEG Laboratoy Room in general hospitals.

정신지체학교 교사의 과학교수 효능감과 과학에 대한 태도의 관계 분석

손연화 ( Yeun Hwa Son ),강현오 ( Hyun O Kang ),주연경 ( Youn Kyung Joo ),한은미 ( Eun Mi Han ) 한국초등특수교육학회 2013 초등특수교육연구 Vol.15 No.1

본 연구는 정신지체학교 과학담당교사의 과학교사 효능감과 과학에 대한 태도를 인구학적인 배경 변인에 따라 유의미한 차이가 있는가와 과학교사 효능감과 과학에 대한 태도의 상관관계를 살펴보는 데 목적이 있다. 127명의 정신지체학교 과학담당교사를 대상으로 설문지를 적용하여 얻어진 결과는 다음과 같다. 첫째, 정신지체학교 과학담당교사의 과학교수 효능감에서는 성별, 학력, 연수유무, 소지자격, 교직경력에서는 차이가 없었지만, 근무기관에서 유의미한 차이가 있다. 근무기관 면에는 국공립학교 근무교사가 사립학교 근무교사보다 과학교수 효능감이 높고, 과학에 대한 태도가 더 긍정적이다. 둘째, 정신지체학교 과학담당교사의 과학에 대한 태도에서는 성별, 학력, 교직경력에서는 차이가 없지만, 근무기관, 연수유무, 소지자격에서 유의미한 차이가 있다. 근무기관은 사립학교 근무교사보다는 국공립학교 근무교사의 과학에 대한 태도가 더 긍정적이고, 연수경험에서는 경험이 있을수록, 소지자격면에서는 특구과학자격, 일반과학자격, 타교과자격소지 교사 순으로 긍정적이다. 셋째, 정신지체학교 과학담당교사의 과학에 대한 태도가 긍정적일수록 그들의 과학교수 효능감은 높게 나타난다. This study examined Teacher`s science teaching efficacy and attitude toward science at school for mentally challenged student and also examined whether there was a meaningful difference according to background variables(gender, academic background, certificate, duty organ, teaching experience, experience of science education training) and the correlation between science teaching efficacy and attitude toward science. Following is the result and argument of survey conducted by 127 teachers from school for mentally challenged student. Based on this conclusion, several suggestions for follow-up study are as follows. Firstly, the STEBI is targeting elementary teachers instead of middle school science teachers, so the attribute or special characteristics are not reflected enough. Accordingly, the development of research tool is necessary to explain science teacher behavior and understand science teaching efficacy. Secondly, the result of this study is contrary to the existing one that female shows more positive attitude, so follow-up study is necessary to examine several variables influencing this result. Thirdly, regarding the result that whether teachers have science teaching training or not influences the attitude toward science, there should be detailed analysis research on the effect of each training program. This study examined Teacher`s science teaching efficacy and attitude toward science at school for mentally challenged student and also examined whether there was a meaningful difference according to background variables(gender, academic background, certificate, duty organ, teaching experience, experience of science education training) and the correlation between science teaching efficacy and attitude toward science. Following is the result and argument of survey conducted by 127 teachers from school for mentally challenged student. Based on this conclusion, several suggestions for follow-up study are as follows. Firstly, the STEBI is targeting elementary teachers instead of middle school science teachers, so the attribute or special characteristics are not reflected enough. Accordingly, the development of research tool is necessary to explain science teacher behavior and understand science teaching efficacy. Secondly, the result of this study is contrary to the existing one that female shows more positive attitude, so follow-up study is necessary to examine several variables influencing this result. Thirdly, regarding the result that whether teachers have science teaching training or not influences the attitude toward science, there should be detailed analysis research on the effect of each training program.

Kagan의 협동학습 구조를 적용한 사회수업이 지적장애아동의 학습태도에 미치는 영향

김성애 ( Sung Ae Kim ),강현오 ( Hyun O Kang ) 한국초등특수교육학회 2012 초등특수교육연구 Vol.14 No.1

본 연구는 Kagan의 협동학습 구조를 적용한 사회수업이 지적장애아동의 학습태도에 미치는 영향을 알아보는데 그 목적이 있다. 연구의 목적을 달성하기 위하여 초등학교 6학년학생 중 통합학급에 속한 정신지체 학생 2명을 선정하여 중다기초설계를 이용한 단일대상 연구를 실시하였으며 학습프로그램이 지적장애아의 수업참여행동과 문제행동에 주는 영향을 조사하였다. 수업참여태도는 교사 지시 따르기, 주목하기, 응답하기 반응 중 한 가지이상 일어나는 모든 경우의 수를 측정하였으며 수업 이외의 지시사항은 제외하였다. 또한 문제행동은 소음 만들기, 자리 이탈하기, 부적절한 자세, 손장난하기 중 한 가지 이상 일어나는 모든 경우의 수를 측정하였고 그 결과는 다음과 같다. 첫째, Kagan의 협동학습 구조를 적용한 사회수업이 지적장애아동의 수업참여태도가 증가하는데 긍정적인 효과를 주었다. 연구에 참여한 학생 모두 교사의 지시에 따르는 행동이 증가하였으며 특히 모둠학습에 많은 관심을 보이며 모둠에서 맡은 역할에 맞는 행동이 증가하였다. 둘째, Kagan의 협동학습 구조를 적용한 사회수업이 지적장애아동의 문제행동이 감소하는데 긍정적인 효과를 주었다. 연구에 참여한 학생 모두 수업과 관련 없는 행동이 감소하였으며 특히 소음 만들기와 부적절한 자세가 현저히 감소하였다. The purpose of this study is to find out The Study on Learning Attitude of Students with Intellectual Disability in Social Studies Classes Using Kagan`s Cooperative Learning Structures. In order to achieve this goal, the followings were set to be the subjects for inquiry based on references and earlier studies: First, how Kagan`s society lesson using cooperative learning affect Intellectual Disabilities` attitude toward learning? Second, how Kagan`s society lesson using cooperative learning affect Intellectual Disabilities` problem behaviors? Attitude in class was measured by numbers of cases of acting in accordance to teachers, paying attention, or responding, and out-of-class instructions were excluded. Problem behaviors were also measured by every numbers of cases of making noise, leaving the seat, inadequate attitude, or toying with hands. Collecting or processing materials represents purposive behaviors according to the overall opportunities on a percentage basis. The results are as followed: First, Society lesson using Kagan`s cooperative learning has positive effect on improving mentally retarded children`s attitude in class, All the students participated in the study showed themselves acting in accordance to teachers` instructions more often. Especially, they showed significant interest in group learning and their behaviors became more appropriate for their role in a group.

정신건강의학과 환자 중 인지 및 기억 장애 지표로서 MMN의 임상적 유용성 연구

이의혁(교신저자) ( Eui Hyeok Rhie ),김동균(공동조자) ( Dong Gyun Kim ),김현탁(공동조자) ( Hyun Tag Kim ),강현오(공동조자) ( Hyun O Kang ) 대한임상병리사협회 2014 임상생리검사학회 발표자료집 Vol.2014 No.-

배경(Background): Memory deficit or cognitive impairment is an inclusive term to describe any characteristic that acts as a barrier to the cognition process. This study provides a non-invasive tool for evaluating patients with cognitive dysfunctions. The mistmatch negativity (MMN) component of event-related brain potentials (ERPs) has become a very popular tool to study auditory functions. The MMN measurement enables one to gain insights into neurobiological substrate of central auditory processing, particularly auditory memory, as well as various attention-related processes of controlling the access of auditory input into conscious perception and higher forms of memory. Moreover, MMN amplitude reduction to duration deviant tones was found to be related to the neuropsychological (working memory and verbal domains) and psychosocial functional outcomes. The present study focused on the relationship between MMN, and cognitive and memory impairment in patients with neuropsychiatric disorders. 방법(Methods): Twenty-six memory & cognitive deficit patients and 16 healthy controls underwent scalp EEG recordings during the delivery of a two-tone passive auditory paradigm (Pure tones; 85% standards [1 kHz, 80 dB], 15% frequency deviants [1.2 kHz, 80 dB]), and an electro-neuropsychological examination. Patients were assessed in regard to clinical symptoms. We measured N1, P2 latency and amplitude (deviant, standard sound response and difference value) at Midline (Fz, FCz, Cz, CPz, Pz) among ERP-MMN. 결과(Results): ERP-MMN waveforms makes it feasible to identify central auditory processing changes and cognitive, speech, and working memory impairment in patients with neuropsychiatric disorders. Compared to those of healthy controls, patients showed significantly reduced MMN amplitudes and shortened latency; impaired memory and cognitive function; and poorer tone matching performance. Cognitive deficits may be congenital or acquired secondarily by brain injuries, mental illness, or other neurological disorders. The MMN may be useful for understanding components of cognition in 고찰(Discussion): various disorders. Our study demonstrated decreased MMN amplitude and shortened latency their association with positive symptoms in patients with memory and cognitive impairment. These findings confirm and extend previous studies regarding impaired basic sensory processing in neurophysiological disorders and explain early sensory processing dysfunction in cognitive impairments. However, further investigation on larger scale is needed to ensure the statistical significance. In addition, future study should consider the use of more diverse paradigms to allow a more detailed understanding of sensory deficit.

일렉트로웨팅구동형 MEMS기반 액체렌즈

이준규(June Kyoo Lee),박경우(Kyung-Woo Park),강현오(Hyun Oh Kang),김재건(Jae Kun Kim),김학린(Hak-Rin Kim),공성호(Seong Ho Kong) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7

기존의 초소형 렌즈모듈들은 초점 거리 가변을 위한 구동 장치가 필요하여 소형화 한계, 큰 전력소모, 부품의 기계적 결함 등 해결해야 할 부가적인 문제점들이 존재하였다. 액체렌즈는 이러한 문제를 해결할 수 있는 유력한 기술로 주목받고 있으며, 특히 부가적인 구동 장치가 필요없고 비교적 간단한 원리로 렌즈 곡률을 조절할 수 있는 일렉트로웨팅 기반의 액체렌즈는 초점 거리 조절 및 줌 조절이 필요한 휴대폰, 캡슐 내시경 등에 적용이 가능하다. 그러나 기존의 일렉트로웨팅 기반의 액체렌즈는 렌즈 캐비티의 크기에서 큰 단점이 있으며, 렌즈모듈구성 시에도 소형화하는데 한계가 존재하였다. 본 연구에서는 렌즈 캐비티를 MEMS 기술을 이용하여 실리콘 기판 상에 제작함으로써 구동회로의 집적이 가능한 액체렌즈를 제작하였다.