가상현실시스템(CAVE)을 활용한 문화 Content의 복원 과정을 통한 CAVE활용 방안에 대한 연구

김태열,유석호,허영주 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

80, 90년대의 영화에서만 보아오던 가상현실이 과학 및 컴퓨터 기술의 비약적인 발전을 바탕으로 우리에게 가까이 다가오고 있다. 다양한 가상현실 시스템 (VRML, HMD, FishTank, Wall Type, CAVE Type 등)의 개발과 함께 그 시스템의 발전으로 더욱 현실감 있는 가상현실 구현이 가능해지고 있다. 몰입감이 높은 가상현실은 이로써 사람들이 일상적으로 경험하기 어려운 환경을 직접 체험하지 않고서도 그 환경에 들어와 있는 것처럼 보여주고 조작할 수 있게 해주는 것이다. 가상현실의 응용분야로는 교육, 고급 프로그래밍, 원격조작, 원격위성 표면탐사. 탐사자료 분석, 과학적 가시화(scientific visualization) 등을 들 수 있다. 구체적인 예로서, 탱크 및 항공기의 조종법 훈련, 가구의 배치 설계, 수술 실습, 게임 등 다양하다. 이런 가상현실 시스템에서는 인간 참여자의 실제조작과 가상 작업공간이 하드웨어로 상호 연결된다. 이렇게 상호 연결된 하드웨어로 인간의 오감을 적절하게 자극하여 몰입감을 더하여 준다. 아직 많은 부분이 모자라지만 많은 연구와 노력으로 빠른 시간 안에 거의 인간이 느낄 수 있는 느낌을 가상현실에서도 현실과 같이 느낄 수 있을 것이다. 이 논문에서는 가상현실시스템의 기본적인 정의와 개념 그리고 종류를 알아보고 그 중에서 몰입감이 뛰어난 CAVE형의 가상현실시스템에 대하여 개념분석을 하였고 다음으로 2003년 KISTI(한국과학기술정보연구원)에서 만들어진 경복궁(문화 원형 Content)을 가상현실시스템에서 복원 과정을 Design process를 거쳐 제작되는 과정을 통해 가상현실시스템에서의 VR프로그래밍 방법과 모델링 방법을 제시하였다. 이러한 과정을 통해 몰입형 가상현실시스템의 활용성에 대해 알아보았고 지금 시점에서 이러한 CAVE형 가상현실 시스템의 활용방안에 대하여 연구해 보았다. 끝으로 가상현실시스템을 활용한 문화재 복원 과정에서 나타난 문제점에 대하여 서술 하고 가상현실시스템의 활용 방안을 제시한다.

주요 우울장애에서 Cytotoxic T Lynphocyte Antigen(CTLA-4) 유전자의 다형성

전태연,배치운,김병균,채정호,박원명,김광수,유태열,한훈 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.5

연구목적 : 세포의 면역 기능 조절에 관여하는 CTLA-4의 유전자 다형성을 분석하여 주요 우울장애와의 면역 유전학적 관련성을 알아보고자 하였다. 방 법 : DSM-Ⅳ진단 기준에 따라 주요 우울장애로 진단된 환자 77명을 선정하였으며 가톨릭대학교 의과대학 조혈모세포은행에서 보유하고 있는 149명의 정상 한국인 자료를 대조군으로 사용하였다. 전혈에서 DNA를 추출하였으며 중합효소반응으로 CTLA-4유전자 exon 1 부위를 증폭한 후 SSCP방법으로 유전?? 형별 분석하였다. 결 과 : 대조군과 주요 우울장애 환자군 사이의 CTLA-4 유전자형과 대립유전자의 발현 빈도를 비교시 유의한 차이가 없었다. 결 론 : 본 연구 결과 exon 1 CTLA-4 유전자형 및 대립유전자의 발현빈도는 주요 우울장애 환자군과 정상 대조군 사이에 차이가 없어, exon 1 영역은 후보 유전자로서의 가능성이 없었다. 향후 연구에서는 다양한 변인들에 따라 대상군을 임상적으로 동질성을 지닌 집단으로 세분하여 조사대상 유전자와의 관련성에 대한 연구가 이루어져야 하겠다. Objectives : This study was carried out to explore the relationship between major depressive disorder and CTLA-4 which is related to the immunologic function such as T cell regulation. Methods : Among the korean patients diagnosed as major depressive disorder according to DSM-Ⅳ, 77 patients without neurological illness, hormonal disorder, or comorbid mental illness were selected. The stored data of 149 normal Koreans from the Catholic Hemopoietic Stem Cell Bank of Korea, were used as a normal control group. The data of Korean control group were compared with those of the studies of different ethnics. DNA was extracted from whole blood and the exon I region of CTLA-4 gene was amplified by polymerase chain reaction. Gene typing was performed by using SSCP and then, the results were assessed. Results : There were no significant differences in genotype frquencies of CTLA-4*G/G, CTLA-4*G/A, and CTLA-4*A/A between the patients with major depressive disorder and the control group in Korean population(48.1% vs 46.3%, 41.6% vs 39.6%, 10.3% vs 14.1%, respectively).There were no significant differences in allelic frequencies of CTLA-4*G and CTLA-4*A between the patients with major depressive disorder and the control group in Korean population(68.8% vs 66.1%, 31.2% vs 33.9%, respectively). Conclusion : Considering negative result for the association of the exon I polymorphism of CTLA-4 gene with major depressive disorder in this study, the exon I polymorphism does not appear to be possible candidate gene for major depressive disorder. Moreover, further systematic researches including diverse clinical variables would required.

알콜이 運轉者의 反應速度에 미치는 影響

孫泰烈 成均館大學校 科學技術硏究所 1989 論文集 Vol.40 No.1

Total motor time(TMT) with It's premotor time (PMT) and motor time(MT) components for 0.1, 0.3, 0.5mg/ml blood alchool concentration and normal condition were studied together with each voluntary response(reaction time of the whole body, handle and breaking movement). 10 healthy males aged 24.6±2.5 years were subjected to a series of the experiments in which they were asked to exert their maximum capacity of the voluntary response for the stimulation by flashing Lamp signal. The result may be summarized as follows: 1) A highly positive correlation was found between individual drinked volume and blood alchohol concentrartion. It was that the correlation and statistical significance of regression equation between the drinked volume and blood alcohol concentration in which subjects appeared r=0.76-0.99, p<0.05 respectively. 2) In addition, the increased latency time of each voluntary response were associated with higher blood alchohol concentration (0.1, 0.3, 0.5mg/ml), indicating that the incremental blood alcholiol concentration has a longer reaction time than normal condition in male driver, but there was no significant -difference by post hoc. 3) From changes in the components ratio of reaction time for the drinked condition, one can deduce that, % PMT effected largely if not completely, due to drinking alchohol.

Platol(Sodium Monofluoroacetate) 중독에 의한 소뇌손상과 동반된 정신병적 퇴행증례 1례 : 7년간 추적 After 7 Years Follow up

유태열,채정호,도규영 大韓神經精神醫學會 1991 신경정신의학 Vol.30 No.5

The authors have experienced a case of cerebellar damage caused by sodium monofluoroacetate(SMFA) poisoning. The patient showed the regressed, childish behavior with marked cerebellar signs and intermittent psychotic symptoms. After follow up for seven years,the cerebellar atrophy was remarkable in the, magnetic resonance imaging(MRI), which was considered to be a sequelae of toxic effect of SMFA.

혼합용매계에 있어서 전해질의 전도도에 관한 연구 (Ⅰ) : 메탄올-물 혼합용매에서의 염화칼륨의 전도도 The Conductance of Potassium Chloride in Methanol-Water Mixtures

박종열,엄태섭 東亞大學校 1974 東亞論叢 Vol.11 No.2

메탄올-물 혼합용매에서 염화칼륨(KCl)의 전도도를 25。와 30。C에서 측정하고 Fuoss-Onsager식을 적용하여 limiting equivalent conductance(??)와 conductance parameter ?? 및 ??를 구하였다. 즉 0.1에서 0.8몰분율에 이르는 7가지 조성의 혼합용매 및 단일 용매인 물과 메탄올에 대해서 각 용매마다 0.01∼0.10M 농도범위의 염화칼륨용액을 만들어 그 전도도를 측정하였다. 극한 당량전도도(??)는 Fuoss-Onsager식에 의거하여 一次的인 近似法으로서 농도(??) 변화에 대한 당량전도도 값을 plot하여 얻은 직선의 기울기에서 A??를 구하였다. 다음 이차적으로 극한당량전도도 값을 구하기 위하여 농도(c)변화에 대한 ?? 값의 plot에서 slope ??와 intercept 즉, 극한당량전도도(??) 값을 최소자승법으로 구하였다. 실험결과 극한당량전도도는 온도 상승에 따라 증가함을 보였으며 또한 혼합용매 조성에따른 ??의 변화는 0.4 몰분율에서 minimum을 나타내었다. 한편 conductance parameter ??는 0.3 몰분율에서 최소값, 1.0 몰분율에서 최대값을 보였고, ??는 매우 근소한 작은값으로 관측되었으나 어떠한 규칙성 있는 변화는 볼 수 없었다. The conductances of potassium chloride were measured at 25。C and 30。C in methanol-water mixtures. The limiting equivalent conductance(∧??) and conductance parameters ?? and ?? were obtained using the Fuoss - Onsager’s conductance equation in the following form; ?? A first approximation for the quivalent conductance at infinite dilution was obtained from a plot of ∧ against ??. The parameter ?? is thus calculated, and a better value for ?? was found through a plot of ?? against concentration, and then determined the slope ?? and intercept ?? with a least square fit. The limiting equivalent conductance and conductance parameter as a function of solvent composition and temperature are discussed in terms of the structural change of the solvent, and also the interactions between ion-solvent and solvent respectively. The experimental results indicate that the limiting equivalent conductance showed the minimum value at 0.4mole fraction of methanol, which was the good analogy with those results of the partial molal volume of which observed for the other electrolytes with respect to the solvent system as examined in this study. It has been concluded that this behavior seems presumably to be the results of having minimum structuredness and free volume of water attributable to the electrostriction effect of ions. The parameter ?? showed the minimum at 0.3 mole fraction, while the value of ?? was found very small with varing the solvent composition.

교정용 미니스크류의 디자인에 따른 식립 및 제거 토오크

차정열,윤태민,황충주 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.1

교정용 미니스크류의 원추 형태가 식립 후 시기별 안정성에 미치는 영향을 알아보기 위해, 시기별 제거 토오크 및 동요도와 조직시편분석을 시행하였다. 성견 6마리의 하악 협측골에 원통형과 원추형 교정용 미니스크류(Biomaterials Korea, Seoul, Korea) 48개를 식립하고, 식립 시 식립 토오크와 동요도를 측정하고 3주, 12주 동안 교정력을 부여한 후, 제거 시 제거 토오크와 동요도를 측정하였다. 식립 토오크는 원통형 미니스크류에서 13.6 Ncm, 원추형 미니스크류에서 22.3 Ncm로 원추형 미니스크류에서 높은 식립 토오크가 측정되었다 (P < 0.001). 식립 3주째 제거 토오크는 원통형 미니스크류에서 5.7 Ncm, 원추형 미니스크류에서 9.1 Ncm로 유의한 차이가 관찰되었다(P < 0.05). 식립 12주째 원추형 미니스크류의 제거 토오크는 3.6 Ncm로 유의하게 감소하여(P < 0.05) 원통형 미니스크류의 4.2 Ncm와 유의한 차이를 보이지 않았다. 이상의 결과로 미니스크류의 원추 구조는 식립 토오크를 유의하게 증가시켜 식립 후 3주간 안정성에 도움이 되었으나, 12주 후 안정성에 있어서는 원통형 미니스크류와 유사하였음을 시사한다. Objective: This study was designed to analyze the primary and secondary stability characteristics of orthodontic mini-screws of tapered design when compared with the cylinder mini-screw. Methods: A total of 48 mini-screws were placed into the buccal alveolar bone of the mandible in 6 male beagle dogs. Comparison was made between tapered and cylinder type mini-screws (Biomaterials Korea, Seoul, Korea). Maximum insertion torque (MIT) was measured using a torque sensor (Mark-10, MGT50, USA) during installation, and maximum removal torque (MRT) was recorded after 3 and 12 weeks of loading. Results: Taper mini-screws showed a higher MIT value of 22.3 Ncm compared with cylinder mini-screw showing 13.6 Ncm (P < 0.001). The MRT of the taper mini-screw showed a significantly higher value of 9.1 Ncm than those of cylinder mini-screw of 5.7 Ncm at 3-weeks after installation (P < 0.05). However, there was no difference in the MRT value between the taper and cylinder mini-screws at 12 weeks of loading. Conclusions: These results showed that the high insertion torque of the taper mini-screw design increases initial stability until 3 weeks of loading, but does not have any effect on the secondary stability at 12 weeks of loading.

靑少年體操의 運動强度 및 에너지 消費量에 관한 硏究

孫泰烈,趙顯喆,鄭正眞 成均館大學校 科學技術硏究所 1988 論文集 Vol.39 No.1

The purpose of this study is to analysis energy expenditure and exercise intensity in adolesent gymnastics. The regression equation obtained from the results of HR and VO_2 was used to calculate Energy consumption for 7males and 5females. As a result of this study it was gained the conclusion as following 1. The energy expenditure in adolesent gymnastics appeared 36.26±7.80cal/4.5min, 19.17±3.85ca1/4.5min male and female students for each. 2. From the view of %HR_max, the exercise intensity of the adolesent gym. appeared 74.2±9.6%, 85.0±13% male and female students for each. 3. It was concluded that the adolesent gym. would be an adequate exercise in problem having training and warm-up effect to male student, training effect to female student.

日常生活의 身體活動量 硏究에 있어서 步數計의 活用 : 運動量 指標로서의 妥當性 Ⅱ. Validity with means of an lndex of ergometry

孫泰烈,安應男 成均館大學校 科學技術硏究所 1986 論文集 Vol.37 No.2

In 28.51±5.0 year old male adults(n = 6) actual Step rate, HR, and estimated value of VO_2 on a treadmill was compared to the scores of 6 types of mechanical pedometer attached to waist belt. In walking and running at each speed all types pedometer give on overstimation of Ca. 7∼30 step/min. There was a linear relationship between pedometer Reading Score and Heart Rate. If Pedometers register only during from 6 km/h walking to 15 km/h running they reflect actual steprate fair good and give a good estimation of the change in Oxygen Uptake and an index of Energy Expenditure as work load gathers.

Biorhythm이 프로野球選手들의 打力에 미치는 影響

孫泰烈,鄭正眞 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.2

The purpose of this study was to determine Rhythmist (Effected Biorhythm) and Non-Rhythmist(Not Effected Biorhythm) and then define the possibility of application and the range of the sports in the Biorhythm. The subjects of this study were selected eleven players who particapated in 83 series of professional baseball game, and then analyzed the Batting Average of 1002 baseball game. The Batting Average were calculated to get Mean and Standard Deviations for those baseball game on each Biorhythm cycles. At last all player's results were obtained T-test. The results obtained from obove research were summarized as follow. 1. All the subjects, eleven players were Non-Rhythmist on Physical rhythm. 2. All the subjects, eleven players were Non-Rhythmist on Emotional rhythm. 3. One of the subjects(Sub. K,J.M) was Rhythmist and the rest, ten players were Non-Rhythmist on Intellectual rhythm.

핸드보올 던지기의 前庭性 空間反應平衡感覺에 의한 誤差

孫泰烈 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.1

The purpose of this study was the research of the fact of error caused by the sense of the vestibular placing reaction balance in Hand ball throw. This study was to mark a cinematographical analysis and evaluation of throwing correctness on the spacing at the motion of target throwing a stimuls load of angular acceleration. The subjects of this study were made from random sampling among two groups, namely national Hand ball team, and the other group in University Hand ball team. As subjects of this study,…… I came to select 11 males of hand ball players and they can separated from 2 group national team composed be of 5 persons and the other team 6 persons, and above fact was also investigated with a 16mm motion picture camera with speed of 200 frames per second by filming of Horizontal view in the hand ball target throw. The results of this study were able to be summarized as following 1) The score of target throwing on the evaluation of correctness Normal condition ; ◁표 삽입▷(원문을 참조하세요) After stimulus ; 2) The relation between normal condition and after stimulus load on the target throwing. ◁표 삽입▷(원문을 참조하세요) 3) Vertical Height of Centers of gravity ◁표 삽입▷(원문을 참조하세요) 4) Transfer velocity of centers of gravity ◁표 삽입▷(원문을 참조하세요) 5) Height of Release Point ◁표 삽입▷(원문을 참조하세요) 6) Ball speed ◁표 삽입▷(원문을 참조하세요)