보건소에 있어서 보건교육 : 현황과 문제점을 중심으로

권병임 이화여자대학교 건강교육학과 1977 건강교육 Vol.- No.10

우리나라 대학(大學) 학생보건관리실태(學生保健管理實態)에 관(關)한 조사연구(調査硏究)

권병임,최삼섭,Kwun, Byung-Nim,Choi, Sam-Sop 대한예방의학회 1979 Journal of Preventive Medicine and Public Health Vol.12 No.1

A survery was carried out in order to know the status of student health service and student medical insurance of universities and colleges in Korea from 1 July to 30 September. 1978. And the following results were obtained; 1. Out of seventy universities and colleges, 54.8% of them had student health service facility such as student health conte. (30.0%) or health room (24.8%). 2. Out of twenty-seven national and public universities and colleges, 44.4% of them had student health service facility and out of forty-three private universities and colleges, 60.5% of them had student health service facilities. 3. Each of 80.0% of 25 universities, 43.3% of 30 colleges and 33.3% of 15 junior colleges had student health service facility. 4. Major roles of student health service were physical examination (92.1%), health counselling (86.8%), primary medical care (78.9%), tuberculosis control (68.4%), insect and rodent control (52.6%), parasite control(47.4%), water source sanitation (44.7%), and dental health care (28.9%). 5. Out of 21 universities and colleges, 66.7% of them had full time doctor and 81.0% of them had full time nurse for student health center. And out of 17 universites and colleges, 5.9% of them had full time doctor and 33.3% of then had full time nurse for student health room. 6. The range of health fee was varied from 100 won to 1,400 won per student per semester and the average was 520 won. 7. Among 55 universities and colleges, 78.6% of them had carried out annual physical examination in 1977 and the rate of physical examination was 57.4%. 8. Out of 70 universities and colleges. 45.7% of them had tuberculosis control program and the prevalence rate was 6.0 per 1,000 students. 9. Student medical insurance program was developed by ten universities and one college among 25 universities and 45 colleges. 10. Student medical insurance benefit was varied according to university and college; the reduction rate of medical fee was 20% to 80% for not only in-patient but also out-patient. 11. The upper limit of pay claim was varied according to the university and college from 5,000 won to no-limitation for out-patient and from 30,000 won to no-limitation for in-patient. 12. The highest utility rate of student medical insurance program was found in university 'F' with the rate of 791 for out-patient and 12 for admitted patient per 1,000 students.

교정용 bonding의 최신 경향

권병인(Byung-In Kwon) 연세대학교 치과대학 두개안면기형연구소 2017 연세임상교정 Vol.24 No.2

교정영역에서의 bonding의 도입은 dramatic effect를 가져왔다. Banding을 하지 않아, 보다 심미적인 치료가 가능하게 되었다. 또한 부분 맹출된 치아나 배열이 좋지 않은 치아에서 bonding을 통해 조기에 교정력을 가할 수 있게 되었다. 최근 50년간 bracket bonding을 이용해 교정 치료를 원활히 수행하여 왔다. 구치부에서도 점점 banding에서 bonding으로 전환하는 추세이다. 미국에 JCO survey에 따르면 구치부에서의 banding 비율이 30% 전후로 banding이 현저히 줄어드는 추세이며, 이는 headgear의 사용이 줄어드는 것과 연관성이 있다. 전체적인 bracket bonding failure는 labial에서 5%, lingual에서 4%로 나타나 많은 개선과 발전이 있었음을 알 수 있다.4-5(Table 1~3) Bracket 탈락률을 보면 평균 5%로 나오지만 예외적으로 하악 구치의 경우는 약 70%의 탈락률을 보이고 나머지는 평균 5~10% 정도의 bracket 탈락률을 보인다. Bracket이 떨어지면 시간 소모, 인력 소모, 경비 증가, 치료기간의 증가로 이어지므로 bonding failure를 낮추는 것이 아주 중요하다. The introduction of bonding in orthodontics has resulted in dramatic effects. The banding was not performed, and more aesthetic treatment became possible. In addition, if teeth are partially erupted or poorly arranged, we can apply orthodontic force early. For the last 50 years, we have performed orthodontic treatment through bracket bonding. In the posterior teeth, there is a tendency to shift from banding to bonding. According to the JCO survey, the banding rate at the posterior teeth is decreasing to about 30%, which is related to the decrease in headgear use. Overall bracket bonding failure was 5% in the labial and 4% in the lingual, so there are many improvements and developments.4-5 (Table 1~3) Exceptionally, the bonding failure of the mandibular molar is about 70%, while the remainder has an average bonding failure rate of 5~10%. Bonding failure leads to time consuming, manpower expenditure, increased expenses, and increased duration of treatment, so it is very important to avoid bonding failure.

영남문집해제 : 약재집

권병 영남대학교 민족문화연구소 1988 민족문화연구소 자료총서 Vol.4 No.-

표준압밀시험에 의한 점토의 초기탄성계수 산정

권병해,임성훈 한국농공학회 2024 한국농공학회논문집 Vol.66 No.1

Unlike artificially created homogeneous materials, the process of calculating the elastic modulus of natural soil involves the possibility of errors. Because the stress-strain behavior of soil is nonlinear, the secant modulus of elasticity is often used based on 1/2 of the stress at failure. Since soil has the property of changing its elastic modulus depending on the confining pressure, numerical analysis models that analyze its behavior inevitably include complex elements. The hyperbolic model, which relatively accurately simulates the behavior immediately after loading in soft ground, assumes that the stress-strain curve of the consolidated undrained triaxial test is hyperbolic and requires the slope of the tangent line at the starting point. However, the slope of the initial tangent in the stress-strain curve obtained from an actual triaxial test is difficult to have regularity according to changes in confining pressure. Additionally, due to the characteristics of a hyperbola, even small changes in related factors cause large changes in the hyperbola. Therefore, there is a lot of randomness in the process of calculating model parameters from the triaxial test results, which causes large differences in the results. Therefore, the method of calculating the initial elastic modulus by the consolidation test presented in this study is also used to verify the method by the triaxial test. It can be applied. However, since this study was applied to only one sample showing typical consolidation characteristics, it is necessary to check samples with various physical properties in the future.

압밀이론에서 2차 압축 적용 시점에 관한 연구

권병해,임성훈 한국농공학회 2023 한국농공학회논문집 Vol.65 No.6

To improve the problem that the settlement curve of the consolidation theory of Terzaghi does not match well with the actual settlement curve, weincluded a secondary compression settlement and analyzed it by varying the beginning point and then obtained the following results. The currentmethods of calculating the compression index from the   log curve and the coefficient of consolidation from the time-dependent settlement curvefor each consolidation pressure proved that the final settlement amount will be consistent after a long time, but the actual settlement amount will alwaysbe smaller than the predicted settlement amount during the settlement progress stage. The consolidation factors estimated by the curve fitting with thecondition that the secondary compression begins in the second half of the primary compression showed similar values to the consolidation factorsestimated by the curve fitting for the primary compression only, and the settlement curves were in better agreement throughout the compression. Itshowed different values, showing low validity. It can be inferred that secondary compression acts from the point when a significant portion of the excesspore water pressure is dissipated, and the loading stress begins to have more influence on the skeletal structure of the soil. Analysis results show thatsecondary compression begins at the range of 91 % to 98 % on the average degree of primary consolidation.

측두 하악관절의 기능적 변화가 있는 환자의 측모두부방사선 계측학적 연구

권병인,백형선 대한치과교정학회 1992 대한치과교정학회지 Vol.22 No.3

Researches in pathologic entities and syndromes that describe temporomandibular joint (TMJ) or TMJ-related pain and dysfunction, have been hampered by confusion and conflict over the pathogenesis of myofascial and joint pain, the character and causes of joint noises, and the lack of scientific methods. Investigators have more recently correlated clinical diagnosis and arthrographic and surgical findings to demonstrate " internal derangements" of the TMJ. It is thought that the structural and functional changes characteristic of internal derangements constitute the principal pathologic entity of the TMJ. Cephalometric data from a group of 34 subjects with documented functional changes in the TMJ were compared with those of a group of 35 subjects from a control sample. The results were as follows : 1. Comparison of a group which shows Class I relationship, there was a tendency to show clockwise rotation of mandible and linguoversion of upper and lower anterior teeth in the experimental sample. 2. Excluding the vertical relationship, there was a tendency to show low values of the lingual surface slope of the upper central incisor and high values of the interincisor angle in the experimental sample.

Splint 치료 후 발현된 개방교합의 MEAW를 이용한 치험예

권병인,박영철 연세대학교 치과대학 두개안면기형연구소 1992 연세임상교정 Vol.2 No.-

측두 하악 관절 질환을 가진 개방 교합의 치험예

권병인,유영규 연세대학교 치과대학 두개안면기형연구소 1992 연세임상교정 Vol.2 No.-

전자 개폐기의 개방시 충격력 예측 모델 개발

권병의(B. H. Kwon),안길영(K. Y. Ahn),오일성(I. S. Oh),이규섭(G. S. Lee),류봉조(B. S. Ryu) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5

Magnetic contactor is an electromagnetically operated switch that serves to open and close high-energy electric<br/> circuits. In the opening of the contactor, the moving parts of the contactor must be stopped at the end of the opening<br/> stroke. It is important that much of the kinetic energy be absorbed in the impact to avoid a rebound that would bring<br/> the contacts close together again. Because the closing and opening action frequently occurs, the impact between the<br/> moving part and the stopper reduces the mechanical lifetime of the contactor. Therefore, the rebound of the contactor<br/> is the most important characteristics that have much influence on electrical performance in the opening responses. In<br/> order to reduce the rebound, the impact force between moving contactor and stopper is predicted because the impact is<br/> a dominant source of the rebound. However, it is so difficult to predict the impact force because of Its non-linearity. In<br/> this paper, we suggest the method of the impact force model for predicting the impact phenomenon. The impact force<br/> is modeled by the nonlinear spring-damping element with Hertz law and hysteresis damping function. In this way<br/> impact force model consists of three parameters, stiffness coefficient, damping coefficient, and power on the<br/> indentation. These three parameters are determined through drop type impact test between moving contactor and<br/> stopper. The derived impact model is applied to predict the impact force of magnetic contactor in opening motion.