일부 치과기공소의 작업장내 공기와 기공사의 혈중 니켈, 크롬 및 카드뮴함량에 대한 연구

민병국,박정덕,홍연표,장임원 중앙대학교 의과대학 의과학연구소 1993 中央醫大誌 Vol.18 No.3

To evaluate some health hazards of dental technician by metal pollution, nickel, chromium and cadmium levels in indoor air of 8 laboratories and in whole bolld of 69 male dental technicians were investigated. Six offices and 36 male office workers were studied as control group. Airborne metals were mesured at breathing zone by personal air sampling method. Collected samples were pretreated by wet digestion, and nickel, chromium and cadmium were determined by flameless method using A.A. spectrophotometer. Also, the nickel, chromium and cadmium concentrations in whole blood were determined by A.A. spectrophotometer after simple dilution with distilled water. the airborne nickel, chromium and cadmium contents were higher in dental laboratory than in office, and higher in polish section than in carving section of the dental laboratory. But all of the airborne metals were ranged within TLV(Threshold Limit Value). Blood nickel, chromium and cadmium levels in dental technician and office-worker, but was not significant difference between polish and carving section of dental technician. Blood nickel concentration of dental technician was correlated with occupational career(r=0.2439, p<0.05) and increased according to occupational duration(F=2.90, p<0.05). Blood chromium and cadmium concentations were not significant difference between dental technician and office worker. Smoking increased only bolld cadmium level in office-worker.

선박 네비게이션 시스템의 효율성 보장을 위한 카메라 장착 중소형 VDR장치 및 데이터 제어방법 연구

민병국,하태진,김용수,박정민,차준섭,Min, Byung Guk,Ha, Tae Jin,Kim, Young Soo,Park, Jung Min,Cha, Jun Sub 한국스마트미디어학회 2013 스마트미디어저널 Vol.2 No.1

The paper presents VDR system for efficiency of ocean navigation device and how to output and to save data using this system as well as compressed digital data and analog video output from the camera are utilized at the same time. The compressed digital data is used to store video for VDR device while analog video is used to display on screen in real-time so that VDR system saves the load on SD memory card without navigation terminal and output it with real-time video. Also, the control method using VDR system are proposed for saving and outputting data. 본 논문은 선박 네비게이션 단말기의 효율성을 위한 VDR 시스템 및 이를 이용한 데이터 출력 저장 방법에 관한 것으로, 압축된 디지털 데이터와 아날로그 영상을 카메라로부터 함께 출력할 수 있도록 함으로써 압축된 디지털 데이터는 VDR 장치의 영상 저장에 이용하고 아날로그 영상은 실시간으로 화면 출력에 이용할 수 있도록 하여, 네비게이션 단말기에 부하를 주지 않고 영상을 실시간으로 모니터로 출력함과 함께 SD 메모리에 저장하게 하는 VDR 장치 및 이률 이용한 데이터 출력 저장 등의 제어방법을 제시하고자 한다.

"서울, 경기 지역 치과경기소장의 전문대학 치기공과 출신 치기공사에 대한 만족도 조사"

민병국,Min, Byoung-Kuk 대한치과기공학회 1989 대한치과기공학회지 Vol.11 No.1

The great sudenn change of circle of dental laboratory technology brought mary discord between the new growing environmental group and the old group, In order to know the satisfactory degree of dental laboratory heads about all dental College, This Study was conducted for 49 detal technicians who graduated from junior laboratory heads in Seoul and Kyoung Gi area. The results are abtained as follow- 1. By age The degree of Satisfaction of items about all graduate dental technician were "41$\sim$45 age" group 26.53%), "46$\sim$50 age" group 22.45%, "36$\sim$40 age" group 18.36%, "31$\sim$35 age" group 12.24%, "51$\sim$55 age" group and "56$\sim$60 age" group 8.16% 60$\sim$age group 4.08% in order. 2. By Job Career. The Highest degree item out of Satisfaction about all graduated dental dental technician was 21$\sim$25 years group 28.5%, 16$\sim$20 years 20.4%, 11$\sim$15 years group 12.24%, 26$\sim$20%, 6$\sim$10 years group 4.08%, below 5 years group 2.04% in order. 3. By managing term of respondent's dental laboratory. The Satisfactory degree of items about all gradate technician were 7$\sim$10 years group 36.73% over 15 years group 22.45%, 11$\sim$14 years group 20.41%, 3$\sim$6 years group 14.29% below 2 years group 6.12% in order 4. By dental technician number of respondent's dental laboratory. The satisfactory degree intems about man were as follow; 6$\sim$9 persons group is 42.86 % The Satisfactory degree items about woman were one persons group in 34.69% 5. By born place The dental laboratory heads mean of inters about all dental technician were Seoul group 20.64 %, Kyoung Gi 17.20 %, Jen Nam group 14.99 % Chung Nam 9.5%in order 6. The satisfactory degree of items about all graduate dental technician were neither good nor bad group 32.65%, bad 6.12%, By ability of adaptaton, The satisfactory degree items about man were neither good nor bad group 42.86%, bad group 40.82%. The satisfactory degree of items about woman were neither good nor bad group 40.82% bad group 36.73%. 7. By sincerity. The satisfactory degree of items about man dental technician who graduated from Junior College were neither good nor bad group 52.02%, bad group 4.08, The satisfactory degree about woman dental technician graduated from Junior College were neither good nor bad group 42.86%, bad group 6.12%. 8. By ability of basical of items about man were bad group 40.82 %. The satisfactory degree about woman were 46.94%. 9. By cooperation relation ship. The satisfactory degree of items about man were neither good nor bad group 42.86%, bad group 10.20%. The satisfactory degree about woman were neither good nor bad group 42.86%, bad group 10.20 %. 10. By ability of work. The satisfactory degree of items about man were neither good nor bad group 48.98%, bad group 4.08%. The satisfactory degree about woman were neither good nor bad group 42.86%, bad group 6.12 %. 11. By the curriculum of the dental technician. The satisfactory degree of items about man were neither good nor bad group 67.35%, bad group 2.04%, The satisfactory degree about woman were neither good nor bad group 61.22%, bad group 6.12%. 12. By occupational satisfaction. The satisfactory degree of items about all graduate dental technician were fatisfied group 14.29%. By the out look of employment. The satisfactory degree of items about man greduate dental technician were neither good nor bad group 34.69 %, bad group 10.20%, about woman graduate dental technician were neither good nor bad group 44.90%, bad group 10.20%, Their employment prospect is not so bright or oprimistic due to the glut supply by graduates in the job-seeking market 13. The satisfactory rate on the artificial dental manufacturing world in terms of effects produced by juror College graduate dental technicians shared good group 40.82% bad group 2.04% 14.

뇌 지주막 낭종 : 증례 보고 Case Report

민병국,윤병만,석종식,최덕영,임광세 대한신경외과학회 1981 Journal of Korean neurosurgical society Vol.10 No.1

Intracranial arachnoid cysts are uncommon congenital lesions of considerable interest and importance, the origins and exact nature of which remain uncertain. They account for about 1% of all intracranial space-occupying lesions). Its predilection sites are in the sylvian fissure, the interhemispheral fissure, the cerebral convexity, the base of the brain, and over the midline of the cerebellum in the posterior fossa. We are reporting a case of arachnoid cyst, developed in the left sylvian fissure in a ten years old male patient

일부 지역 치과의원의 환자만족도에 관한 영향요인 연구

閔炳國,李周熙 동남보건대학 2001 論文集-東南保健大學 Vol.19 No.2

The aims of this study were to find out factors affecting patients' satisfaction, re-utilization intention, and inducement intention, and to develop implication for patient-focused management In dental clinics. Face-to-face inquiries onto the Patients who visited dental clinics or hospitals located in Y City in Kyunggi-do were practiced from 9 to 22 April, 1999. The data for this study were collected through Self-administered Questionnaires from 299 patients who had visited dental clinics more than two times. The results are as follows: The level of dental patients' satisfaction was 2.51 Point(by 5 Point scale) With simple correlation analyses it was found out that the most influential variable was concerned with dental reputation. The results of stepwise multiple regression analysis showed a statistically significant positive relationship between 3 dependent variables and independent variables such as satisfaction for dental reputation. In conclusion promoting patients' satisfaction for dental services, strengthening patient-focused care in dental clinics. consideration for good qualify dental care and kindness and skillful technic of human services are suggested.

경인지역 치과기공사의 건강증진행위와 자기효능감과의 관계 연구

閔炳國,李周熙 동남보건대학 2001 論文集-東南保健大學 Vol.19 No.1

This study was designed to investigate the relationship of health promoting daily life style and self-efficiency about a dental technician. For maintaining health, it is important to keep one s healthful behavior. If human activity is decided by personal recognition, it might be crucial to research the relationship between health promotion behavior and the recognition factors on health promotion. A self-efficiency, among cognitive-perceptual factors, has been convinced of being the most efficient factor for a health promotion to take and maintain a certain activity. The purpose of this study is to inquire into the degree of health promotion activity of a dental technician, and to find out the relationship between the self-efficiency and the health promotion behavior in order to offer the basic data for developing a educational method or program of health promotion. The objects of this study were selected by haphazard sampling and the size was 203 of the dental technician. I collected the data 24 November 2000 to 8 January 2001 and the data was analyzed by means, percentage, ANOVA, pearson's correlation coefficient and stopwise multiple regression, using SPSS-PC+, and the results are as follows. 1. The hypothesis that 'The higher the self-efficacy, the better the health-promoting behaviors' was supported on a meaningful level(r=.623, p<.000). I analyzed the effect of self-efficacy on each section of the health-promoting behaviors and the result in every section supported the hypothesis on a meaningful level-the eating habit(r=.541. p<.000), drinking · smoking(r=.629, p<.000), health responsibility(r=.02, v<.000). the control of interpersonal relation(r=.415. p<.000). the exercise(r=.504, p<.000), the control of interpersonal relation(r=.313, p<.000), self-achievement(r=.542, p<.000). 2. The executive degree of health-promoting behaviors of the objects was above-middle, 2.59(total=4.00). When the means of the executive degree of each sections were examined, the section of self-achievement was the highest(2.98), and the others order was drinking smoking(2.81), the control of personal relation(2.80), the control of stress(2.68), the eating habit(2.82), the exercise(2.49), health-responsibility(2.07). 3. The point of self-efficacy was 6.63(total=10.00). In each sections, self-achievement was the highest(7.82). the control of interpersonal relation(7.33), drinking smoking (6.92) was the next, and the control of stress(6.90) was the next, the eating habit(6.26), the exercise(6.05), health-responsibility(5.98) was the lowest one.

실험적 뇌경색에서 Lipid Peroxidation에 미치는 Liposome-Entrapped Superoxide Dismutase의 효과에 대한 연구

민병국,신봉철,박관,김영백,황성남,석종식,최덕영 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.5

To observe the role of lipid peroxidation and the effect of liposome-entrapped superoxide dismutase(SOD) on lipid peroxidation in experimental cerebral infarct. an infarction model was created by transorbital occlusion of the middle cerebral artery. Malondialdehyde(MDA). which is the degradation product of polyunsaturated fatty acids in the cell wall. were measured at both the cortical and basal ganglia area of cat brain before and after administration of liposome-entrapped superdioxide dismutase The results were as follows : 1) There was a more significant increase of MDA in the left cerebral cortex than in the right cortex after occlusion of the left middle cerebral artery, but there was no significant difference between the 2 sides of the basal ganglia 2) In the left cerebral cortex of the 1 and 3 hours subgroups with in the experimental group. which were treated with liposome-entrapped SOD. there was a more significant decrease of MDA than the left cortex of control group. But there was no significant difference of MDA in the cortex of 6 hours group and the basal ganglia. 3) There was a more significant increase of MDA in the left cerebral cortex of the control group. which was not treated with liposome-entrapped SOD. than in the right cortex. But there was no significant difference of MDA between both sides of the experimental group. 4) In the basal ganglia. there was no significant difference of MDA between the 2 sides of the control and experimental group. It is suggested that brain damage following cerebral infarction can be prevented or attenuated by the treatment of liposome-entrapped SOD.

OLAP 상에서 데이터 접근 제어 메커니즘 설계 및 구현

민병국,최옥경,김강석,홍만표,예홍진,Min, Byoung-Kuk,Choi, Ok-Kyung,Kim, Kang-Seok,Hong, Man-Pyo,Yeh, Hong-Jin 한국정보처리학회 2012 정보처리학회논문지 C : 정보통신,정보보안 Vol.19 No.2

OLAP(On-Line Analytical Processing) 툴은 조직 운영에서 발생하는 데이터의 양이 많아짐에 따라 분석 수요도 함께 급증하며 전문 분석가의 역량만으로는 처리할 수 없는 분석 요구 사항을 충족시키기 위한 툴이다. OLAP에서는 다양한 사용자가 직접 데이터베이스에 접근하여 대화식으로 질의를 던지고 응답을 받아 분석 업무를 진행할 수 있다. 이렇게 많은 사용자들이 데이터베이스에 직접 접근을 하게 됨에 따라 조직의 민감한 데이터를 지키기 위한 보안 정책이 필수가 되었다. 하지만 기존 연구에서는 OLAP의 기능적인 분석에 치중하여 MDX(Multidimensional Expressions)와 XMLA(XML for Analysis) 등의 기법으로 기능을 구현하는 것에 그치고 있다. 이에 본 연구에서는 기존 연구의 문제점을 보완하기 위한 방법으로 효율적인 정보 보호를 위한 데이터 접근 제어 메커니즘을 제안하고 이를 설계 및 구현하였다. 제안한 데이터 접근 방법이 실제 OLAP 환경에서 효율성 있게 동작함을 확인하기 위해 실험평가를 수행하여 본 연구의 우수성을 입증하였다. OLAP(On-Line Analytical Processing) is a tool to satisfy the requirements of managing overflowing data analysis. OLAP can provide an interactive analytical processing environment to every end-user. Security policy is necessary to secure sensitive data of organization according to users direct access database. But earlier studies only handled the subject in its functional aspects such as MDX(Multidimensional Expressions) and XMLA(XML for Analysis). This research work is purported for solving such problems by designing and implementing an efficient data access control mechanism for the information security on OLAP. Experimental evaluation result is proposed and its efficiency and accuracy are verified through it.

소아의 중대뇌동맥 동맥류

민병국,석종식,최덕영 중앙대부설한국의과학연구소 1992 한국의과학 Vol.24 No.2

요추간반탈출증에 있어서 임상적 방사선학적 수술소견 상호간의 관계

민병국,임광세 중앙대부설한국의과학연구소 1981 한국의과학 Vol.13 No.4