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최적 기법을 이용한 2차원 초음속 터빈 블레이드의 설계
문성호(Seong-ho Moon),오세종(Se-jong Oh) 한국전산유체공학회 1997 한국전산유체공학회 학술대회논문집 Vol.1997 No.-
In this study, the effect of shape functions, the search method for minimum of objective function and behavior of parameters appearing in performing optimal shape design were considered. A code for solving Quasi-1D Euler equation and 2D full Navier-Stokes equation was used for final goal. First, polynominal, local cubic polynominal and Fourier series were considered as shape function. Among them, Fourier series showed the best behavior for desired nozzle shape. Second, random search method and gradient based method -using conjugate gradient method- were considered as search methods. The random search method was superior to gradient based method in accuracy while the latter was superior to the former in the cost of computation. Particularly, in gradient based method the gradient vector was so sensitive that search process stopped from time to time. On the other hand, the random search method is stronger than the gradient based method in search for minimum. In addition, Lagrange multiplier appearing in performing gradient based method oscillated when centrai difference was used for space. It shows us that the absence of effect of viscosity affected behavior of Lagrange multiplier.
국공립과 공공형어린이집의 부모의 보육서비스 만족도 비교
문성호 ( Seong Ho Moon ),이현진 ( Hyun Jean Yi ) 열린부모교육학회 2015 열린부모교육연구 Vol.7 No.1
본 연구는 국공립과 공공형어린이집 부모의 보육서비스 만족도 차이를 알아봄으로써 보육기관에 대한 선호도를 조사함과 동시에 부모의 보육서비스만족도 차이를 올바르게 인식하고 반영함으로 어린이집 보육서비스의 질적향상을 도모하고자 하는데 목적이 있다. 부모의 보육서비스 만족도의 차이를 알아보기 위하여 대구시에 위치한 국공립어린이집4곳과 공공형어린이집5곳을 표층표집하여 선정하였고, 최종연구대상자는 국공립어린이집 부모 145명, 공공형어린이집 부모151명으로 전체296명의 유아부모들이다. 자료를 분석하기 위하여 교차분석 및 독립표본 t-검증을 실시하였다. 본 연구의 분석결과를 요약하면 국공립어린이집 재원 유아 부모보다 공공형어린이집 재원 유아 부모의 보육서비스 만족도가 대체적으로 높음을 알 수 있다. 그러므로 정부는 국공립어린이집 뿐 아니라 부족한 국공립어린이집에 대한 대안이 될 수 있는 공공형어린이집제도가 안정적으로 정착할 수 있도록 행정적, 경제적 지원을 통하여 높은 보육서비스를 유지할 수 있도록 지원하는 것이 필요해 보인다. 결과적으로 민간주도형의 보육사업은 공공형어린이집제도를 통하여 민간어린이집의 보육서비스향상에 영향을 주었고 지속적으로 공공형어린이집의 확대를 통하여 새로이 국공립어린이집을 확충하는 비용을 절감할 수 있는 효과를 기대할 수 있다. This study aims at investigating preferences on child care centers, perceiving and reflecting differences of parental satisfaction on child care centers and their services, and seeking qualitative improvement of child care centers by reviewing differences of parental satisfaction between National and public-type child care center. In order to figure out differences of parental satisfaction on child care centers and their services, four national child care centers and five public-type child care centers in Daegu were selected through stratified sampling, and for the final subjects, there were 296 parents of young children, consisting of 145 parents of national child care centers and 151 parents of public-type child care centers. In order to analyze the data, chi-square test and independent sample t-test were conducted. The results of this study are as follows. Parental satisfaction on national child care centers was generally higher than that on public-type child care centers. Based on this result, the government needs to support for maintaining higher quality of child care service through administrative and financial support for the stable settlement of public-type child care center system as an alternative of national child care centers which are few. By doing so, the public-type child care center system can influence private-led child care centers to improve their caring services In addition, it is expected to save the cost to increase the number of national child care centers through continuous extension of public-type child care center.
방사선학적 출혈양상에 근거한 뇌간출혈의 분류에 따른 임상결과
조원중,문성호,이승민,양재영,최천식,주문배,Cho, Won Jung,Moon, Seong Ho,Lee, Seung Min,Yang, Jae Young,Choi, Chun Sik,Ju, Mun Bae 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.2
Objective : Brainstem hemorrhages usually result in much higher mortality and morbidty than any other intracranial vascular lesions. The purpose of the study is to evaluate the relationship of the radiological classification of the lesions and the clinical outcomes, and to evaluate the value of such classification on the choice of management modality. Method : Thirty seven patients with primary brainstem hemorrhage were managed medically or surgically between Oct. 1995 and Mar. 1998. The lesions were classified as two groups based on radiological findings as follows : Focal subependymal hematoma(group I, n=7) and diffuse tegmentobasilar hemorrhage(group II, n=30). The outcomes at discharge were retrospectively reviewed according to such classification. Result : The most common clinical pictures and radiological findings in each group were as followings : 1) Group I : focal compressive lesion which displaces rather than destroys brain tissue. It occurs in a younger age group and causes neurological deficits which are often partially reversible. Operative hematoma evacuation was performed in 43.3%. Their mean improved Glasgow Coma Scale(GCS) score was 4.7. 2) Group II : hypertensive brain stem hemorrhage. It usually causes a diffuse lesion occurring in an older age group and most often associated with profound irreversible neurological deficits which are often fatal. Operative hematoma evacuation was performed in 16.7%. Their mean improved GCS score was 1.4. In both conservatively treated group I and II has no siginificant clinical improvement. Conclusion : Although there is an overlap among them and the size of the group is small, the pathophysiologic classification of this lesion based on clinical features and radiological findings may be useful for decision of treatment method.
김승욱,문성호,허영란,한이수,최준혁,임성우,손정숙,Kim, Seung-Uk,Moon, Seong-Ho,Heo, Young-Ran,Han, I-Su,Choi, Jun-Hyuk,Lim, Seong-Woo,Son, Jeong-Suk 대한한방내과학회 2001 大韓韓方內科學會誌 Vol.22 No.3
Pneumonia is the disease caused by inflammation of lung parenchyma. Major symptoms of pneumonia are fever, cough, etc and consolidation is seen in chest x-ray. When pleurisy gets in complication of pneumonia, pleural effusion occurs. Also chest pain occurs by pleurisy. Gyulhyung is the disease of which major symptom is chest pain. Sugyulhyung from in Gyulhyung, the water sound is audible from the flank side the fact that as Sugyulhyung. Symptom of Gyulhyung is similar to that of pneumonia. We diagnosed this case as Gyulhyung and administrated Banhabogryeongtang to patient. As result, there is remarkable Improvement in symptom and chest x-ray.