Fractal 차원에 의한 표면경화면과 마찰면의 형태해석

문병주,조연상,옥철호,박흥식,전태옥 동아대학교 생산기술연구소 2001 生産技術硏究所硏究論文集 Vol.6 No.1

The determination of surface middleography is believed to be extremely important in the areas of contact mechanics, adhesion and friction. In order to describe middleography of various rubbed and hardened surface, the wear test was carried out under different experimental conditions in dry friction. And fractal descriptors was applied to rubbed and hardened surface of laser modified steel with image processing system. These descriptors to analyze surface structure are fractal dimension. Surface fractal dimension can be determined by sum of intensity difference of surface pixel. middleography of rubbed and hardened surface can be effectively obtained by fractal dimensions.

歷代醫家들의 升降論에 對한 文獻的 考察

文聖喆,金聖勳 대한동의병리학회 1997 동의생리병리학회지 Vol.11 No.1

宇宙萬物의 運動形式이며, 人體에서도 陰陽五行學說과 더불어 生命活動을 營爲하는 基本原理로 認識되고 있는 升降論에 대하여 《黃帝內徑》중에 升降과 關係있는 原文을 중심으로 升降의 槪念을 考察하고, 歷代醫家들의 說을 宋以前, 金元代, 明代, 淸代로 區分하여 學派를 不問하고 升降學說과 有關한 說을 中心으로 比較, 檢討하였다. Through the bibliographical on the Seungang, ascending & descending theory of ancient medical scholars for many generations, the results are obtained as follows: 1. In Huang Ti Nei Ching(黃帝內經), the concept of Seunggang was formed into a systemic medical theory, the basic pattern of motions of everything in universe, and also classified as Seunggang of clear yang and turbid yin, Seunggang of bowel and viscera, Seunggang of herbal medicine. The pathology of Seunggang, and its treatment were explained in detail, too. 2. Before the Song(宋) dynasty, HwaTa(華陀) Zhang Zhong jing(張仲景), So WonBang(巢元方), Wang Do(王燾) argued about the ascending & descending of various disease on the basis of the NeiChing. 3. In Kum-Won(金元) dynasty, Li Dong Won(李東垣), ones of four great doctors thought spleen and stomach as the main axis of ascending & descending movement, and emphasized supplementing digestive tract and activating yang as chief treating methods. Zhu Danxi perceived the theory that Yang often in excess. Yin often in shortage, and he emphasized the treating method of nourishing Yin and relieving fire. 4. In Myong dynasty, Wang Lyun(王綸) emphasized the treating method of supplying Qi and nourishing Yin on the basis of the theory of Donghen(東垣), Danxi(丹溪). Li Shi Jin(李時珍) expatiated the QiMei, Sunggang of medical herbs on the basis of the theory of Neiching, Zhang Won SO(張元素), ZhangKeBin(張介賓), taking a serious view of ascending of priniordial Yang in vital portal, presented the theory of QiChil that bulids up the foundation of SungGang of five parenchymatous viscera. 5. In Ching dynasty, the theory of Sunggang was developed on the point of view of bowel and viscera Whang Won Er(黃元御) insisted the theory of left ascending & right descending, and explained the Sunggang of five element and five parenchymatous viscera through classifying the middle Qi into four grade, half ascending, ascending, half descending, descending. Ha Mong Yo(何夢瑤) presented the SungGang of five parenchymatous viscera. Yie Tianshi(葉天士) developed the theory of the spleen & stomach on Myong dynasty. and established the treatment of TongKangWeTak(通降胃濁法) by classifying the SungGang of spleen & stomach. Wu Ju Tong(吳鞠通) presented the treatment of ascending & descending, according to the demonstration of triple heater. Dang Yong Chun(唐容川) took a serious view of the SungGang of Qi & Blood. Suk Su Dang(石壽棠) asserted the theory of dryness & dampness and he regarded maintaining the blance of dryness & dampness. As the method of maintaining to balance of ascending & descending. Zhang Suk Soon(張錫純) emphasized the function of the atmosphere succesing the theory of Yu Ka Un(喩嘉言). Tu Hak Hae(調學海), one who made final settlement of the theory of SungGang, made overall presentation about the SungGang, and criticized the theory of left ascending & right descending. He also insisted that SungGang must be divided to inside and outside.

선수특성과 경기에 대한 정신기능의 관계

문성철 仁荷大學校 스포츠科學硏究所 1993 論文集 Vol.5 No.-

The purpose of this study is to find how below-listed facts influence on athletes psychological skills for sport. The list of the player-trait is introduced below; 1) Sex. 2) Schooling. 3) Carrier. The subjects randomly chosen were 2041 athletes(M: 1286, F: 755, above 14years old whose careers were at least one year. The questionnaire (PSIS) made by Michal J. Mahoney' PSIS Korean edition was used for this study. PSIS is composed of six items; anxiety, concentration, confidence, metal preparation, motivation, and team emphasis. The six items(PSIS) are treated as dependent variables and the three player-traits are treated as independent. The data were treated by T-score and log??, and regression was used to analyse the means of above conditions. The conclusion is made as follows; 1. There are significance reliability and validity. 2. In the anxiety item, sex, carrier and schooling are considered to be the highest. 3. In the concentration item, carrier is considered to be the highest. 4. In the confidence item, sex, carrier and schooling are considered to be the highest. 5. In the mental preparation item, sex, schooling and carrier are considered to be the highest. 6. In the motivation item, sex is considered to be the highest. 7. In the team emphasis item, carrier is considered to be the highest.

경기특성이 코치의 지도행동에 미치는 영향

문성철 仁荷大學校 스포츠科學硏究所 1992 論文集 Vol.4 No.-

The purpose of this study is to understand how below-listed facts influence in coaches' leadership. The list of the game-traits is introduced below; 1. Number of players. 2. Location of the playground. 3. The degree of physical contact. 4. With or without fighting. 5. With or without a net 6. With or without a ball. 7. With or without the apparatus. The subjects randomly chosen were 1762 athletes(M;980, F:782) above high school level whose careers were at least seven years. The questionnaire(LSS) made by Chelladurai and Saleh was used for this study. LSS is composed of five items; training and instruction behavior, democratic behavior, autocrative behavior, social support behavior, and positive feedback. The five items(LSS) were treated as the dependent variables and the seven game-traits as the independent. The data were treated by T-score and log??, and regression was used to analyse the means of above conditions. The conclusion is made as follows : 1. In the training and instruction behavior item, the games with fighting and with a ball are considered to be the highest. 2. In the democratic behavior item, indoor and apparatus games are considered to be the highest 3. In the autocrative behavior item, the games with physical contact and with fighting are considered to be the highest, 4. In the social support behavior item, the games with fighting is considered to be the highest. 5. In the positive feedback item, the games with physical contact and non-fighting are considered to be the highest.

중증 외상환자에서 염기 결핍수치의 유용성

문준동,김수진,문철규,최성혁,전정민,이성우,홍윤식 대한응급의학회 2001 대한응급의학회지 Vol.12 No.3

Background: This study's objective was to determine the prognostic value of the base deficit measured in the emergency department(ED) and to determine whether base deficit can provide information not provided by advanced injury scoring system. Methods: This study was a retrospective analysis of data collected for two years. Thirty-two severe trauma patients who were admitted to the Emergency Department of Korea University Hospital were included in this study. The patients were divided into two groups: the normal base deficit group(-3 mmol/L to 3 mmol/L) and the elevated base deficit group(>3 mmol/L). The base-deficit value, age, sex, head injury, organ failure rate, and survival were considered, and the also Revised Trauma Score(RTS), Acute Physiology And Chronic Health Evaluation(APACHE II), and Injury Severity Score(ISS) were measured. Result: The elevated base-deficit group showed a lower survival rate and a higher organ failure rate compared to the normal base deficit group. Logistic Regression showed a strong association between base deficit and mortality rate. Among the previous injury scoring Systems(RTS, APACHE II, ISS), base deficit had the strongest correlation with RTS. By using base deficit value and the RTS together, we obtained a higher positive predictive value than that obtained by using base deficit or RTS alone. Conclusion: The admission value of the base deficit in the ED is a useful tool in predicting the outcome in severe trauma patients, and it can be an adjunct to previous injury scoring systems. As an advanced injury scoring System is developed in the future, the base deficit may have some significant role.

치아 마모 환자에서 수직고경 증가를 동반하여 단일구조 지르코니아 보철물로 완전구강회복을 시행한 증례

오경철,정문규,김지환,심준성 大韓齒科補綴學會 2012 대한치과보철학회지 Vol.50 No.3

과도한 치아 마모는 교합면에 손상을 야기하고, 치수 병변, 교합 부조화, 기능장애, 심미적 문제 등을 야기할 수 있다. 과도한 치아 마모를 갖고 있는 환자들을 치료하고자 할 때 수직교합고경(vertical dimension of occlusion, VDO)의 상실 여부와 수복을 위한 악간 공간의 적절성 여부에 기반하여 분류를 할 필요가 있다. 본 증례의 환자는 다수 치아들의 마모를 지닌 50세의 남성으로, 과도한 치아 마모가 있지만 수직교합고경의 상실은 없으며 수복을 위한 악간 공간이 부족하였다. 이러한 경우 수직교합고경을 증가시켜 치료를 진행하는 것을 고려할 수 있다. 수직교합고경의 증가를 필요한 범위 내에서 최소로 줄이고, 증가된 수직교합고경 상에서 안정화 기간을 거친 뒤 안정된 교합 접촉을 제공할 수 있다면, 수직고경 증가를 동반한 치료법은 안정성을 가질 수 있다. 본 남성 환자를 치료하기 위해 수직고경의 증가를 동반하여 전치부와 구치부에서 단일 구조 지르코니아를 이용한 고정성 보철물로 수복을 하였다. 일련의 치료과정을 통하여 기능적인 면과 심미적인 면에서 만족스러운 결과를 얻었기에 보고하는 바이다. Excessive occlusal wear results in unacceptable damage to the occluding surfaces, and can cause pulpal injury, occlusal disharmony, impaired function, and aesthetic deformity. Patients with severely worn dentition need to be classified as several categories relative to the vertical dimension of occlusion (VDO) and the interocclusal distance for the prosthetic space. When treating patients classified as those who have excessive wear without loss of occlusal vertical dimension but with limited space, we could consider treating them at an increased vertical dimension of occlusion. Treatments at an increased vertical dimension of occlusion may provide stability, given that the amount of its increase was minimal, and a perfected occlusion was achieved after enough stabilization period. A 50-year-old male visited the department of Prosthodontics in Yonsei University Dental Hospital with the chief complaint of worn teeth on lower anterior area. Reconstruction at an increased vertical dimension of occlusion was planned. After the compatibility of the new vertical dimension of occlusion had been confirmed under interim fixed restorations, definitive fixed restorations composed of full-contour monolithic zirconia prostheses were placed. This case presents that a satisfactory clinical result was achieved by restoring the worn dentition at an increased vertical dimension of occlusion with an improvement in esthetics and function.

Crawford Ⅲ형과 Ⅳ형 흉복부 대동맥류 4예 보고

문성민,손민수,이길연,이상목,고석환,홍성화,윤충,오수명,박호철 대한혈관외과학회 2003 Vascular Specialist International Vol.19 No.2

한국무용 전공자의 근 기능 특성 연구

문성철,백연옥 仁荷大學校 스포츠科學硏究所 2001 論文集 Vol.13 No.-

The purpose of this study was to find the trait on the muscle strength, power and endurance of Korean dancer in high school. 16 subjects of high school dancer(Korean dancer; 8, ballerina; 8) were recruited randomly for this experimental study. All subjects were healthy dancers with out acute or chronic injuries. Subjects were tested for knee extension and flexion, ankle extension and flexion on a Cybex-II isokinetic dynamometer of made Lumex Co. in U.S.A. The results of analysis on the data obtained from each measurement were as follows: 1.The trait of muscle strength of Korean dancer was showed to higher deficit of peak torque for knee flexion between left and right, to higher peak torque(peak torque/weight ratio) for left knee extension, to higher peak torque of left ankle flexion(peak torque/weight ratio), to lower deficit of peak torque for ankle flexion between left and right, to lower peak torque of left ankle extension(peak torque/weight ratio) and the right ankle peak torque/weight ratio, and to higher left ankle ipsilateral balance. 2.The trait of muscle power of Korean dancer was showed to higher deficit of peak torque for knee flexion power between left and right, to higher peak torque(peak torque/weight ratio) for left knee extension power, to lower deficit of peak torque for knee extension power between left and right, to higher left ankle flexion power (peak torque/weight ratio), to lower left ankle extension power(peak torque/weight ratio), and to higher deficit of peak torque for ankle extension power between left and right. 3.The trait of muscle endurance of Korean dancer was showed to higher peak torque for left knee extension endurance.

자기주도 교수법의 학습효과와 성취동기의 관계

문성철 인하대학교 스포츠과학연구소 2000 論文集 Vol.12 No.-

The purpose of this study was to identify the effects of self teaching method program on learners of high jump in consideration of their achievement motive. This study was conducted on 59 college students who major in department of physical education. For this study, achievement motive of subjects was measured as a background variable. Hence, understanding of high jump movements, performance of individual movements(form, exactness, speed and adaptability), and performance of movements(expression, sequence and composition) were measured as dependent variables. The inference and statistical verification of the research assumptions were made with the SPSS program, and the following conclusions have been reached after a comparative study between the verification result and antecedent study results: 1.Learning effects(205.055%) in the understanding of high jump movements were measured at the end of the first week. And learning effects in terms of performances of individual movements and movements(14.658 ~ 38.621%) measured at the ends, thus, the learning effects under self teaching method program in the whole 16 weeks course were confirmed. 2.Relationship between learning effects and achivement motive of learners was no significant in representing ability. 3.Performances of individual movements in eight weeks through sixteen weeks of learning turned out to be affected evenly by achievement motive(-), and peformances of movements in four weeks of learning were affected evenly by achievement motive(+) but there was no significant relationship in eight weeks.

노인외상환자의 예후 인자

문철규,전정민,최성혁,문준동,이성우,홍윤식 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

Background: It has been documented that certain prognostic factors may affect the outcomes of the old aged victims by trauma. Considering that trauma is the sixth most common cause of death in people over the age of 65 years and there is a rapid growth of elderly population, it is paramount to understand the prognostic factors when dealing with geriatric trauma patients. Hypothesis and Goals: It can be hypothesized that the prognostic factors should be determined independently between populations being consisted of different races, countries, socio-economic states, cultures, or so on. Thus, the study was designed to evaluate the factors affecting the outcomes of elderly Korean trauma patients. Methods: One hundred forty six patients aged over 65 years were retrospectively reviewed, who visited the Emergency Center of Korea University from January, 1997 to June, 1998. Of 146 patients, 7 were excluded due to discharge against advice or transfer to the other hospitals. Parameters analyzed were age, sex, mechanism of injuries, body region injured, Injury Severity Score (ISS), previous medical illness, hospital morbidity, duration of hospital stay, and cost. Each patient was classified into improved or not-improved group depending on the outcomes, and young-old or old-old group depending on the age. The factors affecting the hospital stay in improved patients were analyzed in the parameters of previous medical illness, hospital morbidity, multiple injuries, ISS, and age. All statistical tests were conducted with two-tailed levels of 0.05. Results: Of 139 patients, the mean age was 74±7.1 years, mean ISS 9.3±7.26, mean hospital stay 27±27.1 days. Most commonly injured body region was the extremities due to fall from a level surface. Rate of previous illness showed 0.94 medical diseases per person and were aggravated after trauma in 39 patients (60.9%). Hospital morbidity rate was 0.46 incidents per person. There were no differences in age and duration of hospital stay between the improved and the not-improved group. Substantial differences were noted in affected body region, incidence of previous illness, and hospital morbidity between the groups (p=NS). Not-improved group had higher ISS(p<0.05). ISS, previous illness and hospital morbidity affected the duration of hospital stay in the improved group. Hospital stay was 40±25.1 days in patients with ISS over 6 while 6±8.6 days in those with ISS 5(p<0.05). Hospital stay in the improved was 26±26.9 days while 31±24.8 days in the improved old-old group (p=NS). Hospital stay in the young-old minor trauma (ISS5) patients with previous illness and hospital morbidity was 26±10.1 days while 4±7.3 days in those without previous illness and hospital morbidity (p<0.05). Conclusion: Previous medical illness and hospital morbidity, not age, are predictive of outcomes of geriatric trauma patients with respect to hospital stay. As most of the hospital morbidity was a trauma-induced aggravation of previous medical illness and hospital morbidity contributing poor outcomes can be potentially avoidable, routine aggressive care for the geriatric trauma patients with previous medical illnesses is needed.