기능성 게임을 위한 BCI 입력 인터페이스 연구

최규남(Kyu Nam Choi),유환수(Hwan Soo Yoo),황보택근(Taeg Keun Whangbo) 한국컴퓨터게임학회 2013 한국컴퓨터게임학회논문지 Vol.26 No.4

BCI is called BMI (brain-machine interface) sometimes. It is the interface which controls things with human consciousness. In this paper, we look into several of the headset protocol, and we proposed unified protocol with medical standard MFER (Medical Waveform Format Encording Rules) through the analysis of the protocol. And to prove the excellence of the proposed protocol as a case study, we demonstrate embedded control car so as to; (1) prevent overlapped investment on new BCI input interface development, and (2) help to create BCI-related functional game easily, (3) realize variety services through the each equipment compatibility.

소셜네트워크를 통한 건강정보 공유 서비스 연구

최규남 ( Kyu-nam Choi ),황보택근 ( Taeg-keun Whangbo ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.2

고혈압과 당뇨와 같은 만성질환은 장기적인 관리가 필요하다. 최근 주목받고 있는 폐쇄형 SNS 시스템 설계를 통해서 동일한 질병을 가지고 있는 그룹간의 커뮤니케이션을 활성화하여 자유로운 게시글을 통해서 환자 맞춤형 건강정보를 발굴하고 공유하는 시스템을 안드로이드 어플리케이션을 통해서 구현하였다. 본 서비스를 통해서 건강정보 공유 서비스 연구가 활성화될 것으로 기대한다.

WATERDROP NETWORK(WDN) : 데이터 클러스터링을 위한 프로토타입 기반의 증가적 신경망 모델

최규남(Kyu-Nam Choi),배환국(Hwan-Kook Bae),김기태(Ki-Tae Kim) 한국정보과학회 1999 한국정보과학회 학술발표논문집 Vol.26 No.1B

프로토타입 기반으로 증가적 신경망은 점진적으로 동적인 신경망을 구성하면서 데이터 분류를 수행하는 신경망 모델이다. 그동안 연구되어온 증가적 신경망 모델은 데이터를 분류를 위하여 감독 학습을 수행해왔다. 그러나, 보다 일반적인 데이터 집단화를 이루기 위해서는 무감독 학습의 데이터 클러스터링이 요구된다. WDN 신경망 모델은 데이터 클러스터링을 위한 프로토타입 기반의 증가적 신경망으로서 무감독 학습을 수행하도록 구성되었다. 본 연구에서는 WDN 신경망 모델이 갖고 있는 프로토타입 기반의 증가적 학습 개념과 특성을 깊이 있게 분석하여 데이터 클러스터링에 적합한 새로운 유사도 측정 방법과 학습 알고리즘을 제안한다.

실업계 고교 동일계 전형의 변천과 향후 정책 방향

최규남(Kyu Nam Choi) 대한공업교육학회 2004 대한공업교육학회지 Vol.29 No.1

정부의 기능인력 수급계획에 따른 공고교육의 변천 - 1962년 ~ 1981년을 중심으로 -

최규남(Kyu Nam Choi),노태천(Tae Cheon Rho) 대한공업교육학회 1999 대한공업교육학회지 Vol.24 No.2

The major purpose of this study was to identify how the governmental plan of demand & supply of Skilled Worker had influenced on education of industrial high school and how education of industrial high school had changed according to economical situation or circumstance in period of 1962-1981 years. This study was carried by literature review such as publications of institutes, data of department of statistic and labor, economic development plans of Korea etc. The major conclusions of this study were as follows : 1) Education of industrial high school was influenced slightly by the plan of demand & supply of Skilled Worker until 1960s late, but at the time of 1970s the extension of industrial high school had been driven powerfully by governmental plan of demand & supply. The number of students and schools were increased greatly in this period and at the same time industrial high schools of special kind were also established to train high-skilled worker. 2) The extension policy of industrial high school had progressed in order to educate high-skilled worker who would contribute economic development was stopped by the change of economic situation in 1979 after all. That means that education of industrial high school was changed by economic target rather than educational purpose.

망막정맥폐쇄에서 혈압의 일중 변동 양상 분석

박성진,문상우,임성협,윤일한,최규남,이호영,Sung Jin Park,MD,Sang Woo Moon,MD,Sung Hyup Lim,MD,Il Han Yoon,MD,Kyu Nam Choi,MD,Ho Young Lee,MD 대한안과학회 2013 대한안과학회지 Vol.54 No.9

Purpose: The purpose of this study was to determine the diurnal blood pressure variation with retinal vein occlusion (RVO) using 24-hour ambulatory blood pressure monitoring (24-hour ABPM). Methods: The subjects in this study visited the department of ophthalmology from May 2012 to December 2012 and were diagnosed with RVO but had no history of hypertension (HTN). Non-dipper was defined as a nocturnal systolic blood pressure (SBP) decrease less than 10%. These values were used to compare the 24-hour ABPM values of the RVO and the control groups. Results: The 24-hour ABPM values, with the exception of the mean nightly SBP, were statistically different whne the RVO group was compared with the control group. The odds of an RVO patient being a non-dipper compared to dipper were 1.81 times greater than in the control. Additionally, the clinical SBP and DBP in the RVO group were not significantly different when the HTN group and the non-HTN group were compared. In contrast, the mean 24-hour SBP and the mean DBP were significantly different in regard to HTN. Conclusions: Patients with RVO have a tendency to maintain high BP throughout the day and also during the night. A patient with non-dipper status can be at risk for RVO, even if the patient does not have HTN. Therefore, 24-hour ABPM is an effective management approach for HTN in addition to strict BP control in patients with RVO.

초등미술교육에서 ‘잘라낸 종이판화 프로그램’의 개발 및 적용

박정환(Park Jung-Whan),최규남(Choi Kyu-Nam) 한국미술교육학회 2004 美術敎育論叢 Vol.18 No.3

이 연구는 종이판화를 다루는 초등현장의 문제점을 개선하고 기존 연구결과를 발전 시키기 위해, 종이판화의 여러 기법 중 ‘잘라낸 종이판화’의 교육적 가능성을 통해 초등현장에서 다양하고 효과적인 교수학습 프로그램 개발.제공하는 데 있다. 그리고 이 연구를 통해 다음과 같은 결과를 이끌어 낼 수 있었다. 첫째, ‘잘라낸 종이판화 프로그 램’ 개발의 기초적 근거로 문헌을 통해 ‘잘라낸 종이판화’의 개념 및 표현특성을 고찰하 였고, 다른 판화와 달리 ‘판면의 다의성’을 보다 다양하게 지니고 있음을 분석ㆍ확인할 수 있었다. 둘째, 그 판화기법을 교육대학교 2학년 학생을 대상으로 우선 1차 실험하 여 교육적 가능성을 모색할 수 있었다. 셋째, 실제 ‘잘라낸 종이판화 프로그램’의 개발 및 적용을 위해 1차 실험결과로 초등교사에게 Workshop을 실시하고, 실습 후 직접 설문방법 및 분석으로 예상 가능한 프로그램을 도출해 낼 수 있었다. 끝으로 학년별 ‘잘라낸 종이판화 프로그램’을 구안하여 초등학생을 대상으로 실제 적용하고, 그 적용 결과 즉 작품 및 결과물을 통해 초등미술교육에서 ‘잘라낸 종이판화’의 다양한 교육적 가능성을 분석하여 검증할 수 있었다. This research aims to develop a ‘Cutted Cardboard-Print Program’ and to provide an effective teaching method for elementary art education with a view to the educational possibility of ‘Cutted Cardboard-Print’ among various Cardbord-Print techniques. It contributes to improve classroom practices of elementary art education by resolving problems in the ways in which Cardboard-Print is treated and to advance existing research in this field. Followings are the results and findings of this research to be discussed. First, based on the literature review, the concept and specific expressive characteristics of ‘Cutted Cardboard-Print’ are considered as a theoretical framework in developing a ‘Cutted Cardboard-Print Program’. Among specific expressive characteristics, as this research ascertains, ‘The Various Function & Expression of a Printing Plate’ in ‘Cutted Cardboard-Print’ is more remarkable and influential than those in other print techniques. Second, this printing technique, when it is applied to the art education class for sophomore pre-service teachers in the university of education as a preliminary experimental study, proves its educational possibility. Third, a practical approach is used in the development and application of a ‘Cutted Cardboard-Print Program’ in a way that the result of the preliminary experimental study became operative in the workshop for in-service teachers in an elementary school, and that a questionnaire and an analysis of the practical application are conducted to derive the program as expected. Finally, a graded design of a ‘Cutted Cardboard-Print Program’ is elaborated and implemented in classroom practices with elementary school students, which proves the educational possibility of a ‘Cutted Cardboard-Print Program’ via the actual results and art works of students.

인간의 시각 특성에 기반한 LCD 영역형 얼룩의 불량 수준 측정

이원희(Won-Hee Lee),박노갑,최규남(Kyu-Nam Choi),유석인(Suk-In Yoo) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.2B

TFT-LCD의 생산 과정에서 나오는 불량 제품의 검출은 자동화 과정에 의해 선택된 잠재적 불량 제품의 선택에 이은 인간의 목시검사에 의한 판단을 통해 이루어진다. 이러한 목시검사를 자동화하기 위해서는 불량의식별성에 영향을 미치는 각 요소들에 대한 정량적인 분석, 그리고 각 요소들과 실제 최종적인 불량 판단 여부사이의 체계적인 함수 관계의 파악이 필요하다. 본 논문에서는 TFT-LCD의 영역형 얼룩을 구성하는 특징적인 요소들을 정의하고, 이를 통해 불량 수준을 정의하는 수치화 함수를 유도하는 과정과, 이를 영역형 얼룩의 불량 수준 수치화에 적용한 결과를 보여 준다.

Triamcinolone Acetonide에 의한 口蓋裂 발생기전에 관한 조직화학적 관찰

催奎南,全容赫,羅福瑛 고려대학교 의과대학 1986 고려대 의대 잡지 Vol.23 No.1

Physiologic levels of corticosteroids along with other hormones and growth factors are known to be essential for normal development of the secondary palate whereas, pharmacologic dose of these steroids specifically disrupt palatal development but still mechanism of their teratogenic action remains controversial and little have been reported on their effect on cell surface materials. Therefore, changes of palatal matrix components and carbohydrate rich cell surface macromolecules during the process of triamcinolone-induced cleft palate in DDY mouse in vivo mere investigated histochemically. Administration of triamcinolone acetonide delayed palatal shelf elevation and changed the shape of shelves to thicker and shorter, when the shelves finally reached horizontally, the distance between shelves was too far to contact each other but under these circumstances, no difference was seen in the palatal tissue histologically including medial edge epithelial degenerative change. PAS positive reactivity was great!:; increased in the shelf epithelia just prior to elevation and diastase sensitive materials were increased both in mesenchyme and epithelia prior to and during fusion and decreased thereafter. Whereas, TAC markedly reduced its reactivity prior to shelf elevation but the reactivity on diastase resistant PAS materials were recovered thereafter which suggest that the fluctuation of PAS positive materials largely depend on morphogenetic status of the palatal shelves. Sulfated acid mucopolysaccharide was increased in mesenchyme trnasiently prior to shelf elevation but T.4C inhibited its increment. With the results, it seems that TAC-induced cleft palate is primarily due to changes in quantity and quality of the palatal matrix and cell surface macromolecules with consequent morphological change of palatal shelves and interference of morphogenetic movement, shelf elevation.

백서의 원위부 피편에 동맥유입의 중요성에 관한 실험적 연구

최규남,최희윤,강희문,김한중 大韓成形外科學會 1983 Archives of Plastic Surgery Vol.10 No.2

Microsurgery and myocutaneous flap have been developed recently for wide employment in plastic and reconstructive surgery. Therefore, the delay procedure has been declined in its use recently, because it has many difficult problems. If the flap is longer and larger, it should be delayed for complete survival, but delay requires considerable time. Therefore, as a substitute for delay, vascular anastomosis in the distal part of a flap will theoretically give the same effect. In this study, we investigated the importance of arterial inflow in the distal side of a flap in rats. The experiment was done in 3 different groups according to the design of flaps and in each group 3 subgroups were made. In A flap, the superficial epigastric artery was preserved or anastomosis. In V flap. the superficial epigastric vein was preserved or anastomosis. In C flap, as a control flap, both artery and vein were severed. In result, A flaps in all 3 groups were completely survived. Both V and C flaps in all 3 groups were showed distal necrosis. But C flaps were showed more necrosis than V flaps. In conclusion, we suggest the possibility that a large flap may be transposed in one stage with vascular anastomosis in the distal part-preferably artery and vein, or artery only.