Tube 방향에 따른 조종실에서의 산란선에 관한 연구

오동훈(Dong Hun Oh),김병기(Byung Ki Kim),김기정(Ki Jeong Kim),이민우(Min Woo Lee),김순배(Soon Bae Kim) 대한영상의학기술학회 2009 대한영상의학기술학회 논문지 Vol.2009 No.-

Purpose : Since X-ray was discovered by Roentgren in 1895, the bombed by X-ray has been the biggest part of artificial radiation. It’s definite that biological tissue reactions when it’s exposed by radiation. Even a very small amount of the bombed by radiation, if someone is exposed for a long time of many times, it takes some risk like leukemia and genetic influence. So we’d better make a smaller bombed circumstance for radiolotechnologists. In Kon-kuk University Medical Center, we installed the direction of tube toward the control room for the sake of patients. So from this case, what I want to know is how x-ray and scattering ray influence to radiolotechnologists. Materials and Methods : We measured scattering ray for three months from Oct 1, 2008 to Nov 31, 2008 in diagnostic radiology examination room We made two group A and B, three each, and then we installed total six TLD. Results : The average superficial dose of group A is 0.090 mSv and that of group B is 0.157 mSv. So the average superficial dose of group A is about 57% of that of group B. And average of group A is 0.093 mSv and that of group B is 0.150 mSv. So group A is about 62% of group B. Conclusion : The amount of radiation between group A and B makes 1.5 times difference. The reason the amount of radiation of group B which has a door between the control room and the exam room is higher, let alone influence of lead glass. We make the direction of tube toward the control room. This measurement can be compared with effective radiation which is generally performed in hospitals. The effective radiation of chest PA exam is 0.02 mSv, and that of lateral exam is 0.04 mSv. Also skull AP and lateral exam are 0.04 mSv. From this result, even it’s less than 0.2 mSv, from the study for 3months, we can’t neglect that. So we can know that if possible we should try to place tube not toward the control room Like Kon-kuk University Medical Center, in the case that tube is installed toward the control room for the patients’ sake, we University Medical Center, in the case that tube is installed toward the control room for the patients’ sake, we should try to minimalize the effect to radiolotechnologists using portable lead glass or shieling.

Shoulder Rockwood 검사법에서 Position 변화에 따른 Image Quality 향상을 위한 연구

오동훈(Dong Hun Oh),김병기(Byung Ki Kim),김대호(Dae Ho Kim),이민우(Min Woo Lee),김순배(Soon Bae Kim) 대한영상의학기술학회 2010 대한영상의학기술학회 논문지 Vol.2010 No.-

Purpose : The shoulder joint occurs frequently chronic pain and physical disabilities because of a wide range of motion and the complex anatomical structures. Shoulder joint is made of many joints and it is composed of the humerus head and the scapula which is caused by the area of about two times. with this difference in order to reduce the structural failure which is made of three upper arm joints and ligaments and labral, a rotate cuff which at that outside becomes accomplished with muscles under the shoulder and 4 muscles of Subscapularis, Infraspinatus, Teres Minor, Supraspinatus. It is involved in maintaining the stability and movement. In the case of a impingement syndrome patients with different kinds of tests are performed. Since the clinical diagnosis to check complement and cause analysis the simple X-ray inspection is conducted. rockwood method has been implemented to observe and measure acromion. For this reason, Rockwood method by examining changes in the patient’s position have experimented and the evaluation of the images was performed. its purpose is to improve the quality. Material and methods: Department of Radiology, five people staff who don’t have a shoulder disorder of anatomical position, true AP position, hand collected position, 90- degree arm position and gets by changing the position. each acquired image is evaluated by Department of Radiology, professor of Musculoskeletal system one people, one people in major radiology, two people in major orthopedic surgery, radio technologist two people experienced more than 5 years. Results : Image evaluation form is collected hand on your umbilicus and received the highest score of 18 points, True AP position was evaluated as the lowest score 6 points. Department of Radiology, a specialist anatomical position was evaluated as the best imaging, Collected in the umbilicus with hands positiom was evaluated as the best imaging by major orthopedic surgery and radio technologist. Conclusion : Through this research we could see the difference depending on the position on rockwood method. To collect in the umbilicus of the hand receiving the highest score was evaluated as an excellent image. When examing the rockwood method, radio-technologist are required understanding anthropotomy and accurate test methods. In the future we think the patient rather than simply the tests and will try to improve the quality of the image.

우리나라 주택건설시장구조 측정에 관한 연구

오동훈(Oh Dong-Hun) 한국도시행정학회 2003 도시 행정 학보 Vol.16 No.1

The purpose of this study was to estimate the degree of inequality of housing construction market structure in Korea by analyzing and identifying the current state of the market through the sample survey. Among many kinds of methods, the Gini index calculation was chosen as a method for estimating the structure of housing construction market. The variables used in calculating Gini coefficient were as follows; the annually planned number of apartment building units (N), floor size (FS), average sale price per square pyung by region and size (P), average execution rate of project (E), average selling rate of housing construction company (Sr). The estimated Gini index was about 0.6 which showed that the structure of Korean housing construction market is in the state of a relatively severe inequality in 2002. Like this study, the macro analysis on the structure of the market might be periodically needed in order to help setting up a better housing construction policy even though the situation continues which the Census of the above market is impracticable since the population size of the market participants is so variable and unstable.

펜션산업의 특징과 급성장 원인에 관한 소고

오동훈(Oh Dong-Hun),박선영(Park Sun-Young),이재순(Lee Jae-Soon) 한국도시행정학회 2003 도시 행정 학보 Vol.16 No.2

The purpose of this article was firstly to explore pension housing industry, secondly to study the characteristics of pension and thirdly to analyze the cause of rapid growth of pension housing industry in order to investigate situational and environmental settings regarding current pension housing market. In doing so, this study would not only provide useful information on pension as a sort of traveling housing lodge which is a new paradigm in an emerging leisure activity era but also to stimulate further needs and wants for more study as a new housing style in the field of pension industry. The results of this study therefore comprise two ways: one of results is regarding the current characteristics of pension and pension housing industry. Those are 1) a new living paradigm suggested in leisure and cultural tourism times, 2) location lying near national natural park and/or environment place such as forest, river, lake, and valley and so on, 3) high-end market of travel housing lodge where a various kinds of theme were provided, 4) dual characteristics having the functions of self residence and income producing business 5) increasement in tax base and the devotion to local economy activation by inducing tourists. The other results are regarding the causes of rapid growth in pension housing industry. Factors related to such the rapid growth are 1) leisure hours increased owing to the introduction of the weekly 5-day-working hour system, 2) the change of consumer's notion according to the growth of income level, 3) major traffic road facility expansion and the increase in number of holding vehicles, 4) increasement on leisure activity population and a new trend in relation to leisure and culture activity expansion, and 5) a new investment alternative suitable for the period with lower interest rate.

초전도 한류기 지지애자의 최적 절연설계를 위한 표면형상에 따른 연면 절연특성 연구

오동훈(Dong-Hun Oh),구재홍(Jae-Hong Koo),이방욱(Bang-Wook Lee) 대한전기학회 2019 대한전기학회 학술대회 논문집 Vol.2019 No.10

상대적순위보정지수(R2nIF)를 활용한 주요국의 SCI 논문 질적 수준 비교분석

오동훈 ( Dong Hun Oh ),김영준 ( Young Jun Kim ),김용정 ( Yong Jeong Kim ) 기술경영경제학회 2013 Journal of Technology Innovation Vol.21 No.1

연구개발에 따른 성과물은 다양한 형태가 있지만 대부분의 경우 일차적으로 논문의 형태로 발표된다. 따라서 논문에 대한 분석은 연구 성과 평가의 가장 기본적인 수단이 된다. 문제는 논문으로 나타난 연구성과를 얼마나 객관적으로 측정할 수 있는가이다. 학문분야의 특징에 따라 논문 수는 물론 인용횟수 등이 다르게 나타나기 때문에 발표된 논문의 수준이 어느 정도인지를 객관적으로 평가하는 일은 성과분석의 가장 중요한 첫걸음이다. 이 논문에서는 SCI 논문을 대상으로 증거기반 접근을 실시함으로써 주요국에서 생산되는 논문들이 세계 속에서 차지하는 질적 위상을 분석하고자 하였다. 이러한 분석을 위해 여러연구진들이 수행해 왔던 SCI 논문 질적 계량지표를 살펴보았으며, 이들 지표의 한계점을 보완함으로써 연구 분야별 비교, 국가별 비교, 세계 수준과 비교가 가능한 신규 계량지표, 상대적 순위보정영향력지수(Relatively Rank-Normalized Impact Factor, R2nIF)를 개발하였다. 본 연구를 통해 흥미를 끄는 두 가지 결과를 얻을 수 있었다. 우선 우리의 예상을 벗어나 태국과 이집트, 그리고 뉴질랜드가 각각 지구과학, 수학, 약리학에서 가장 우수한 논문을 생산하고 있는 국가로 분석되었다는 점이다. 둘째는 인구 500만 이하의 강소국인 유럽의 스위스, 네덜란드, 덴마크, 아시아의 싱가포르, 그리고, 중동의 이스라엘이 최고 수준의 논문 생산국이라는 점이다. 특히, 스위스는 분석 대상 21개 분야 중 컴퓨터과학, 면역학 등 무려 4개 분야에서 가장 우수한 논문을 생산하는 국가로 랭크되었고, 네덜란드는 화학과 임상의학 등 3개 분야에서 최고 수준의 논문을 생산하는 것으로 나타났다. 이처럼 전 세계에서 높은 국가 경쟁력을 자랑하고 있는 강소국들이 과학분야에서도 높은 수준의 논문을 생산하고 있음을 확인할 수 있었다. 본 연구를 통해 개발한 Relatively Rank-Normalized Impact Factor를 SCI논문 성과분석에 적용해 본 결과, 향후 이 신규 질적지표는 피인용횟수(Citation) 정보 수집이 불가능한 대부분의 성과분석 및 성과평가에 적절하게 활용될 수 있을 것으로 기대된다. This paper introduces a new qualitative measurement indicator, Relatively Rank-normalized Impact Factor (R 2 nIF) that can overcome drawbacks of the existing research performance measures. With the help of this innovative indicator, this study analyzes and compares the quality of research papers across countries and National Science Indicators (NSI) standard academic fields. The development of an improved bibliometric indicator for evaluating the quality of research papers and disentangling the “international” dimension of research performance will be of interest to academics and practitioners alike.

HVDC MI-PPLP 케이블 Butt-gap 내 온도에 따른 부분방전 개시전압 특성 연구

오동훈(Dong-Hun Oh),권익수(Ik-Soo Kwon),이호영(Ho-Young Lee),김선진(Sun-Jin Kim),이방욱(Bang-Wook Lee) 대한전기학회 2018 대한전기학회 학술대회 논문집 Vol.2018 No.-

장애유형별 창업아이템 선정과 창업성공과의 관계에 대한 연구

오동훈(Dong-Hun Oh),김창완(Changone Kim) 한국창업학회 2017 한국창업학회지 Vol.12 No.3

정부에서는 장애인의 자립생활 기반 구축을 위한 경제활동 대안으로 장애인 취업을 적극 지원하고 있으나 장애인은 여전히 인식 및 편견으로 취업과 직장에서의 생활에 어려움을 겪는다. 이러한 장애인 취업문제의 해결대안으로 창업이 제시되고 있으며 장애인 창업의 가장 큰 특징으 로는 비장애인기업 보다 장애인 고용률이 훨씬 높다는 것이다. 본 연구에서는 장애인 창업시 자신의 장애유형을 고려하여 사업아이템을 선정하는 것이 사업 지속기간에 영향을 미치는지에 대해 확인해 보고자 하였다. 연구 대상자는 2011년 1월 1일부터 2013년 12월 31일까지 재단법인 장애인기업종합지원센터의 ‘장애인 창업점포지원사업’ 수혜자 대상으로 다음과 같은 연구를 진행하였다. 본 연구를 통해 조사대상자의 80% 이상이 자신의 장애유형을 고려하여 창업아이템을 선정 한다는 것을 확인 하였다. 지체장애의 경우 대부분이 서비스업과 도‧소매업, 음식점업 및 비알콜 음료점업을 영위하고 있는 것으로 나타났다. 청각장애의 경우 기본적으로 언어장애가 수반되는 경우가 대부분인데, 창업아이템 선정에서도 고객과의 접촉이나 대화가 적은 단순 소매판매 등의 업종을 선정하는 것으로 나타났다. 시각장애의 경우 창업자는 모두 안마업 아이템을 선정하였다. 이는 시각장애 유형의 특성인 시각을 제외한 다른 감각기관을 활용 및 특화시켜 장애유형에 맞는 창업아이템 선정으로 창업성공률을 높인 것으로 볼 수 있다. 이러한 연구결과는 장애인을 대상으로 한 창업지원 시 장애인이라는 특수성을 감안하여 창업아이템을 선정하도록 제도적으로 지원하는 정책이 필요함을 시사한다. Although the government actively supports the employment of persons with disabilities as an alternative to economic activities for building a basis for independent living, the disabled still suffer from difficulties in employment and life at work due to their perceptions and prejudices. As a solution to the problem of employment of disabled persons, entrepreneurship is suggested and the most important feature of disability entrepreneurship is that the employment rate of disabled persons is much higher than that of non - disabled persons. The purpose of this study was to determine if a disabled entrepreneur s selection of a business item, taking his/her own disability type into account, in starting a business affected business duration. From January 1, 2011 to December 31, 2013, the following research was conducted for beneficiaries of the Disability Business Establishment Store Support Program of the Comprehensive Support Center for the Disabled. Through this study, it was confirmed that more than 80% of the respondents selected entrepreneurial items considering their disability type. Most of the cases of handicapped persons are engaged in the service industry, In the case of the hearing impaired, most of the cases are accompanied by language impairment. In selecting the entrepreneurial items, it was found that they selected industries such as simple retail sales with less contact with customers or conversation. In the case of visual impairment, the founders selected massage items. It can be seen that the success rate of the start-up was increased by selecting the entrepreneur item that suits the type of disability by utilizing and specializing other senses other than the sight which is the characteristic of the blindness type. The results of this study suggest that a policy that supports the institutional support for selecting entrepreneurial items is necessary in view of the specificity of persons with disabilities when supporting entrepreneurs with disabilities.

공공문화시설 건립타당성 조사방법의 효율성에 관한 연구

오동훈(Oh Dong Hun),이재순(Lee Jae Soon),정만모(Chung Man Mo) 한국도시행정학회 2006 도시 행정 학보 Vol.19 No.2

The purpose of this paper is to present the improvement schemes enhancing the efficiency of Feasibility Study for Constructing Public Cultural Facility through reviewing the problems on the current methodology of the feasibility study. Research targets in the study are limited to Public Library and Center for Culture and Athletics. The authors find out the problems of the selected research reports conducting feasibility study for Constructing Public Culture Facility by 6 kinds of standpoint such as policy, location, economy, technology, fund raising, and management. They also review the method and efficiency of the feasibility study. Improvement schemes presented in this paper are as follow; 1) Approach considering demand-side rather than supply-side is strongly recommended. 2) The standardized instruction including main valuation items for feasibility appraisal is required. 3) Various fund raising tools such as PFI, BTL, BOT should be considered. 4) Competitive bid system could be applied to research project with service cost of less than 30 million won. 5) Plan improving both location and accessibility should be prepared when the subject facility is not located on the best site.

열교환기의 열저항에 따른 열전모듈 냉방 성능에 대한 연구

한훈식(Hun Sik Han),김서영(Seo Young Kim),지용준(Young-Jun Jee),이대웅(Daewoong Lee),장길상(Kil Sang Jang),오동훈(Dong Hoon Oh) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5

Thermal performance of a thermoelectric module (TEM) in a thermoelectric cooling system with a heat sink is analytically examined. The thermoelectric cooling system is composed of a water jacket, a thermoelectric module and a heat sink. The thermal performance of a thermoelectric module (Ferro Tee: TE 9500-127-060B) with the selected convective thermal resistance of a heat sink (Rev) is evaluated. The results show that the cooling performance of a thermoelectric module is enhanced as the convective thermal resistance decreases. The thermoelectric cooling system with R<SUB>cv</SUB>=0.3 provides 44.9% higher COP (coefficient of performance) and 59.5% higher heat absorbed compared to R<SUB>cv</SUB>= 1.1, respectively.