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원준호,윤숙정,이지범,김성진,이승철,원영호 대한의진균학회 2009 대한의진균학회지 Vol.14 No.2
Candida albicans is a dimorphic yeast which is responsible for 70 percent to 80 percent of all candidial infection, and is the most common cause of superficial and systemic candidiasis. Invasive candidiasis occurs under certain circumstances such as immunosuppression, prolonged hospitalization, and previous antibiotics use. We report a case of candidiasis with a unusual presentation of subcutaneous abscess. A 54 year-old woman came to our clinic with painful erythematous swelling plaques and nodules on the face and arms. She was hospitalized with generalized edema and weakness of both leg. She had a history of herbal medication for 1 year and was finally diagnosed with iatrogenic Cushing syndrome in department of the endocrinology. Biopsy of the lesion revealed chronic inflammation in dermis and subcutis and budding yeasts with pseudohyphae were shown in Gomoris Methenamine silver stain. And Candida albicans was identified by fungus culture. Candida albicans is a dimorphic yeast which is responsible for 70 percent to 80 percent of all candidial infection, and is the most common cause of superficial and systemic candidiasis. Invasive candidiasis occurs under certain circumstances such as immunosuppression, prolonged hospitalization, and previous antibiotics use. We report a case of candidiasis with a unusual presentation of subcutaneous abscess. A 54 year-old woman came to our clinic with painful erythematous swelling plaques and nodules on the face and arms. She was hospitalized with generalized edema and weakness of both leg. She had a history of herbal medication for 1 year and was finally diagnosed with iatrogenic Cushing syndrome in department of the endocrinology. Biopsy of the lesion revealed chronic inflammation in dermis and subcutis and budding yeasts with pseudohyphae were shown in Gomoris Methenamine silver stain. And Candida albicans was identified by fungus culture.
원준호,이정섭,송수정,강경식 대한안전경영과학회 2009 대한안전경영과학회 학술대회논문집 Vol.2009 No.04
Supports the activity of the disability firm the policy which is active for is unsatisfactory. The positive promotes the activity of the disability firm from the research which sees and raises presents the politic plans for the competitive power improvement of the disability firm the fact that the economic social positions of the disabled person and with the aim.
원준호,한봉윤,김세현 한국방위산업학회 2011 韓國防衛産業學會誌 Vol.18 No.2
The purpose of this study is to introduce the effective and logical approaches for estimating acquisition costs using analogy method. In order to apply analogy method, proper factors or rates to compare with similar systems have to be defined. However, it is often difficult to acquire these rates from historical data of similar weapon systems. In this study, we suggested a more accurate model for estimating acquisition costs by including domestic research & development cost and foreign purchase price. To find out the appropriate development cost of the target systems or sub-assembly level, we introduced a cost adjustment coefficient using PRICE model. PRICE, a computer-aided parametric cost analysis tool, analyzes and shows the development, production, operation, and support costs for a particular weapon system. Secondly, we suggested another way to estimate reasonable purchase price using regression analysis with recognized leading price-drive variables such as specifications and performances. Finally, we applied the proposed method to an actual missile cost analysis project, and showed the result. The proposed method was proven to be useful in estimating the acquisition cost and purchase price.
원준호,이정섭,송수정,강경식 대한안전경영과학회 2009 대한안전경영과학회 학술대회논문집 Vol.2009 No.04
The positive promotes the company activity of the disabled person from the research which sees hereupon and raises in order to plan the competitive power improvement of the disability firm our country and including observes comparison investigates the current point of disability firm relation policies from the dimension which is synthetic and seeks character does disability firm relation politic types and the disability firm policies of advanced nation and the economic social positions of the disability firm.
상용 해석 소프트웨어를 이용한 접촉문제의 효과적 해석 및 최적 지지점 설계
원준호,최주호,Won June-Ho,Choi Joo-Ho 한국전산구조공학회 2006 한국전산구조공학회논문집 Vol.19 No.1
본 논문에서는 자중이 작용하는 적층판의 변위를 최소화하는 지지봉의 개수와 위치의 최적화를 다루고 있다. 자중이 작용하는 적층판의 해석 수행 시 적층판과 지지봉, 적층판들 사이에 접촉이 발생한다. 이러한 접촉문제는 상용 해석 소프트웨어의 접촉 요소를 사용하면 쉽게 접근 할 수 있으나 상용 해석 소프트웨어는 여러 가지 접촉 상황을 모두 고려해야 하므로 효율이 떨어지며, 특정 접촉문제에서는 아주 긴 해석 시간을 요구한다. 따라서 본 논문에서는 상용 해석 소프트웨어의 접촉해석 기능 대신 선형해석 기능만을 사용하되 접촉면에 존재하는 요소들의 관계를 접촉 조건을 이용한 관계식으로 정의하여 해석을 수행하였다. 그 결과 상용 해석소프트웨어에서 제공하는 접촉해석과 동일한 결과를 도출하는데 약 30배에 해당하는 시간을 절감하였다. 그리고 이러한 해석 프로그램을 이용하여 지지봉의 개수와 위치에 관한 최적화를 수행하였으며, 그 결과 지지봉의 개수를 40% 절감하였고 그에 따른 지지봉의 최적 위치를 찾을 수 있었다. In this study, an optimum support design problem is considered to minimize displacement of stacked plates under self weight condition. During the displacement analysis, several kinds of contact arise between the plates themselves and support bar. These can be easily considered if commercial analysis software, which provides capability to solve the contact problem, is used. It is found, however, that the computing time is extraordinarily long due possibly to the generality of the software and also to the ignorance of the control parameters used in the software. In this paper, the contact condition is imposed directly by the authors, while the software is used only to solve the ordinary displacement analysis problem. In this way, the computing time is decreased remarkably by more than 30 times, while yielding the same accurate results. Optimization is conducted based on this efficient analysis method to find minimum number of supporting bars using the response surface algorithm.
Dynamic Property Identification of Structures with Hinge Joint using Maximum Likelihood Estimation
원준호,Chekyu Lim(임체규),Dooho Lee(이두호),Jooho Choi(최주호) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Identification of dynamic properties for structural joints is important in the prediction of dynamic behavior of assembled systems. However, the real values of these properties have large uncertainty and identification of the properties using analytical or experimental approach is extremely difficult or sometimes impossible. Several studies proposed hybrid or synthesis methods which simultaneously use analytical and experimental approaches to identify the dynamic properties of joint. However, among the many types of joints, the bolt joint was only treated as a practical example in most of the studies. In this study, for verification model composed of simple plate with a hinge joint, dynamic properties are identified by using maximum likelihood estimation (MLE). Finally, the proposed method is applied to a real glove box that includes the hinge joints in a vehicle.
장애인기업의 경쟁력 향상을 위한 생산제품의 공공구매제도 개선방안에 관한 연구
원준호,송수정,강경식 대한안전경영과학회 2010 대한안전경영과학회 학술대회논문집 Vol.2010 No.1
본 연구에서는 장애인기업이 공공조달시장 진입을 통해 성장할 수 있는 기반 마련하고 장애인기업의 판로지원을 위해 공공기관의 장애인기업 생산물품 구매 활성화 방안 모색하여 공공기관의 장애인기업 생산품 구매촉진 방안 및 정책 제언을 제시하는 것을 그 목표로 하고 있다.