선천성 진주종 수술 후 재발 위험인자에 대한 고찰

오윤석,김정만,정한진,신시옥,최영석 대한이비인후과학회 2017 대한이비인후과학회지 두경부외과학 Vol.60 No.11

Background and Objectives The incidence of recurrence after surgery of congenital cholesteatoma is increasing due to the widespread use of otoendoscopy as well as an increased awareness of these lesions among primary care physicians. There is no general consensus on the risk factors affecting recurrence. In this study, analyzing clinical characteristics of recurred cases from a tertiary hospital, we investigated risk factors for the recurrence of congenital cholesteatoma after surgery. Subjects and Method From 1999 to 2016, data were collected from retrospective chart reviews of patients who have undergone surgeries for congenital cholesteatoma at Hospital. We analyzed data about clinical characteristics and recurrence according to the age at diagnosis, location, stage and type of disease, pneumatization of mastoid, ossicular erosion, and surgical techniques. Results Sixty-eight patients underwent surgery for congenital cholesteatoma. The average age at operation was 4.8 years. Recurrence was detected in 7 cases of the 68 patients, with the recurrence rate of 10.3%. Sex, age, cholesteatoma type, location, stage, mastoid pneumatization, and operation method did not show significant differences between the recurred group and the non-recurred group in the univariated analysis. Conclusion The recurrence rate of congenital cholesteatoma after primary operation was 10.3%. In this study, there was no statistically significant risk factor for postoperative recurrence of congenital cholesteatoma. Korean J Otorhinolaryngol-Head Neck Surg 2017;60(11):554-8

외식산업의 성과측정항목의 가중치 개발: 국내 패밀리 레스토랑을 중심으로

오윤석,정순여 한국외식경영학회 2004 외식경영연구 Vol.7 No.2

Measuring and evaluating the business performance plays a very important role in managing the business. This study tried to propose a novel point of prospective and method in which the performance evaluation in any family restaurant should be illuminated and be performed. In this study, BSC provided the main conceptional framework for evaluating the performance of a family restaurant. Furthermore, this study verified the validity of the proposed performance evaluation method through specific case analysis and used AHP to quantify its validity objectively. Finally, this study found the fact that non-financial prospectives, compared to financial prospectives, should be more importantly considered as the performance evaluation index of the family restaurants. Most of all, the study showed that the proportion of performance evaluation indexes related to Customers prospective and Learning and Growth prospective revealed very highly, therefore variables such as customer satisfaction index, per employee productivity, education and training, customer response rate, employee satisfaction index should be emphasized as key factors when it comes to the process of selecting indexes and measuring their performance evaluation of the business.

유전알고리즘을 활용한 대전시 시내버스 노선 설계

오윤석,Mohammad Hadi Almasi,강승모 한국ITS학회 2017 한국ITS학회 학술대회 Vol.2017 No.10

수소충전소용 고압수소배관 제조기술

오윤석 한국가스학회 2022 한국가스학회 학술대회논문집 Vol.2022 No.5

생물다양성 관련 지식의 이익공유를 위한 체재 - 지리적 표지와 상표에 관한 사례연구를 중심으로

오윤석 한국농촌경제연구원 2004 농촌경제 Vol.27 No.4

This study reviews the innovative use of some legal tools to support the efforts of the people of local and indigenous communities to conserve and use sustainably their biological diversity, biological resources, and related traditional knowledge. So, this study reviews concepts of intellectual property- in particular geographical indications and trademarks- as possible incentives for the marketing of products from biological resources produced through traditional and environmentally friendly methods. It includes case studies: Kava, Rooibos, Quinoa, Basmati rice and Neem. Through the case studies, this study will review two forms of intellectual property rights, which have received relatively little attention in discussions of sustainable use or benefit-sharing derived from bioresources and traditional knowledge. Conclusionally, geographical indications and trademarks could potentially serve as tools to help holders of traditional knowledge benefit more equitable for the commercial use of their knowledge.

GIS를 이용한 도시철도 건설계획수립을 위한 의사결정지원시스템 설계에 관한 연구

오윤석,구지희,김태훈,Oh Yoon-Seuk,Koo Jee-Hee,Kim Tae-Hoon 한국공간정보학회 2005 한국공간정보학회지 Vol.13 No.2

Today, ever growing population density in Seoul or areas near Seoul is problematic. To overcome the problem, the government tries to construct so called, 'New-towns'near Seoul to spread out the population over larger areas. But building new-towns created another problem of traffic between Seoul and New-towns. It can be solved if more public transportation systems such as urban railroads are constructed. In order to succeed in urban railroad construction, we have to make a perfect plan through in depth research on characteristics of the urban train and the construction site. In this paper, we propose a method to design the Decision Support Systems(DSS) using Geographic Information Systems(GIS) and Spatial Analysis for the planning of urban railroad construction. 수도권의 인구밀집 현상은 우리나라의 큰 사회문제이다. 이러한 문제를 해결하기 위해 신도시를 건립하여 인구를 분산시키려 노력하고 있지만 서울과의 접근성이 극심한 교통체증으로 인하여 약하기 때문에 신도시들은 베드타운의 역할을 잘 수행하지 못하는 실정이다. 이러한 문제는 대중교통수단의 확충이 그 해결책이 될 것이다. 따라서 국내 수도권 도시철도망의 경우 향후 연장길이 확충은 물론 경량전철 둥 다양한 유형의 도시철도가 도입될 예정이다. 이러한 계획을 성공적으로 수행하기 위해서는 철도자체의 특성에 대한 고려뿐만 아니라 도시철도가 건설되는 지역의 종합적인 검토가 필요하다. 본 연구에서는 지리정보시스템의 공간분석기능을 이용한 의사결정 지원시스템을 설계함으로서 기존 도시철도 건설계획 수립과정을 개선해보고자 한다.

우리나라 연안해역 해저정보조사의 필요성 및 조사방향에 관한 연구

오윤석,김병국,김형수,Oh Yoon-Seuk,Kim Byung-Guk,Kim Hyung-Su 한국공간정보학회 2005 한국공간정보학회지 Vol.13 No.1

연안지역은 환경적, 국제적, 자원개발적인 정책을 수립하는데 있어서 매우 중요한 지역이다. 그러나 우리나라는 여러 다른 기관에서 다양한 목적에 따라 연구$\cdot$조사되어 왔다. 그러므로 우리나라의 연안에 대한 통합적이고 기초적인 조사는 이루어지지 않았고 지금까지 구축된 자료는 여러 가지 목적으로 활용하기 힘든 실정이다. 이 연구에서는 우리나라 연안에 대해 현재까지 조사된 실정을 파악하고 새로운 조사의 필요성에 대해 연구하였다. 또한 효율적인 조사 방법으로 지역을 세분화하여 나누고 조사 대상간의 중요성에 따른 조사 우선순위를 고려함으로써 좀 더 효율적인 조사 방법을 제안한다. The coast is important area to set up policies in aspects of environmental, international and developing of resources. The researches have been conducted by many different organizations according to their own purposes. So the fundamental researches of Korean coastal area haven't been completed. For that reason, we can't use the datum to apply f3r different cases. In this paper, we studied about our current situations and the need of surveying. For a effective research methods, we suggest dividing research areas into zones and dividing them into smaller zones. And we divide priority of research and ranging of surveying classes by grading them depending on the importance.

수량계산을 위한 LiDAR와 SBES데이터 통합프로그램 개발에 관한 연구

오윤석,배상근,김병국,Oh Yoon-Seuk,Bae Sang-Keun,Kim Byung-Guk 한국공간정보학회 2005 한국공간정보학회지 Vol.13 No.2

본 연구에서는 항공레이저측량(LiDAR; Light Detection And Ranging)을 이용한 지상지형자료(DEM, DSM DTM 등)와 단빔 음향측심기(SBES; Single Beam Echo Sounder), 측면음향주사기(SSS; Side Scan Sonar)를 이용한 하저 지형자료의 통합방안을 모색하고, LiDAR 데이터와 SSS/SBES 데이터를 통합하고 지형의 2차원 및 3차원 그래픽 표현, 수량계산 등의 기능을 갖는 소프트웨어를 개발하였다. 개발한 소프트웨어의 정확도 비교는 상용 소프트웨어인 Surfer를 이용하였다. LiDAR(Light Detection And Ranging) can make terrain model where above the ground and the mixed data between SBES(Single Beam Echo Sounder) and SSS(Side Scan Sonar) can make terrain model where bottom of water. So this research suggest that how to merge data which are got ken different devices and we developed the software which can display 2D/3D graphic and water volume calculation. And we compared accuracy between the commercial software'Surfer'and LiDAR and SBES data Merging Program.

증착방법에 따른 DLC 막의 마찰-마모 특성평가

오윤석,Oh, Yoon-Suk 한국세라믹학회 2009 한국세라믹학회지 Vol.46 No.5

DLC is considered as the candidate material for application of moving parts in automotive components relatively in high pressure and temperature operating conditions for its high hardness with self lubrication and chemical inertness. Different deposition method such as arc plating, ion gun plating and PECVD were used for comparing mechanical and tribological properties of each DLCs deposited on stainless steel with 1 um thick respectively. Among these 3 types of DLCs, the arc plated DLC film showed highest value for wear resistance in dry condition. From the results of analysis for physical properties of DLC films, it seems that the adhesion force and crack initiation modes were more important factors than intrinsic mechanical properties such as hardness, elastic modulus and/or roughness to the wear resistance of DLC films. Raman spectroscopy was used for understanding chemical bonding natures of each type of DLC films. Typical D and G peaks were identified based on the deposition method. Hardness of the coating layers were identified by nanoindentation method and the adhesions were checked by scratch method.

유전자원에 대한 접근 및 이익공유에 관한 나고야의정서 이행법의 제정방향

오윤석 한국지식재산연구원 2013 지식재산연구 Vol.8 No.1

The Nagoya Protocol on Access to Genetic Resources and the Fair and Equitable Sharing of Benefits Arising from Their Utilization to the Convention on Biological Diversity(hereinafter referred to as Nagoya Protocol ) is adopted for the fair and equitable sharing of the benefits arising from the utilization of genetic resources. Nagoya Protocol provide that the Parties to the present Protocol shall take legislative, administrative or policy measures, as appropriate, with the aim of ensuring that benefits arising from the utilization of genetic resources, based on mutually agreed terms. So, Korea Government prepared for the Draft on Executive Law of Nagoya Protocol (hereinafter referred to as Governmental Draft ). This article aims for the study on the direction of enacting on Executive Law of Nagoya Protocol. The method of this study is review the Nagoya Protocol and the Governmental Draft. The principal provisions to the Nagoya Protocol are Objective, Use of terms, Scope, Fair and equitable benefitsharing,Access to genetic resources, Access to traditional knowledge associated with genetic resources, Special consideration, Tansboundary cooperation, National focal point and Competent national authorities,Compliance with domestic legislation or regulatory requirements on access and benefit-sharing, Monitoring the utilization of genetic resources and Compliance with mutually agreed terms. The Governmental Draft provide similar provisions to the Nagoya Protocol. But, some provision of the Governmental Draft provide incorrect provision to the Nagoya Protocol. First, the objective of the Nagoya Protocol is the fair and equitable sharing of the benefits arising from the utilization of genetic resources. But the objective of the Governmental Draft are contribute to conservation of biological diversity, provide for the process of access to genetic resources, and provide for the sharing of the benefits arising from the utilization of genetic resources. Strictly speaking, the objective of the Nagoya Protocol is the ABS. Second, the Nagoya Protocol provide 22 use of terms(17 Terms of CBD and 5 terms of the Nagoya Protocol). But, the Governmental Draft provide 13 use of terms. Third, the provision of scope, national focal point, competent national authorities and others of the Governmental Draft shall modify. In conclusion, the Governmental Draft shall provide correct provision in accordance with the Nagoya Protocol as a whole. “생물다양성협약의 유전자원에 대한 접근 및 그들의 이용으로부터 발생하는이익의 공정하고 형평한 공유에 관한 나고야의정서(이하‘나고야의정서’라 함)”는유전자원의 이용으로부터 발생하는 이익의 공정하고 형평한 공유를 위하여 채택되었다. 나고야의정서는 상호합의된 조건에 기초하여 유전자원의 이용으로부터발생하는 이익을 보장할 목적으로 당사국들에게 적절한 법률적, 행정적 및 정책적조치를 취할 것을 의무로 규정하고 있다. 우리나라는 나고야의정서의 발효에 대한준비작업으로“유전자원의 접근 및 이익공유에 관한 법률 제정안(이하‘정부안’이라 함)”을 마련하였다. 본 논문은 나고야의정서 이행법의 올바른 제정방향에 대해연구하고자 한다. 연구방법은 나고야의정서와 정부안의 내용을 비교, 검토하는 것이다. 나고야의정서의 주요 규정들은 목적, 용어의 정의, 적용범위, 공정하고 형평한 이익공유, 유전자원에 대한 접근, 유전자원에 관련된 전통지식에 대한 접근, 특별 고려, 국경간 협력, 국가연락기관 및 국가책임기관, 접근 및 이익공유에 관한국내법 또는 법적 요건의 준수, 유전자원 이용의 감시와 상호합의된 조건의 이행등이다. 정부안은 나고야의정서의 조항들과 유사한 조항들을 규정하고 있다. 그러나 정부안의 일부 조항들은 나고야의정서 조항들의 취지와 다르게 규정하고 있다. 먼저, 나고야의정서의 목적은 유전자원의 이용으로부터 발생하는 이익의 공정하고 형평한 공유이다. 그러나 정부안의 목적은 생물다양성의 보존에 기여하고, 유전자원에 대한 접근 절차를 규정하며, 그리고 유전자원의 이용으로부터 발생하는이익의 공유를 규정하고 있다. 정확하게 말하면, 나고야의정서의 목적은 접근 및이익공유이다. 둘째, 나고야의정서는 총 22개의 용어(생물다양성협약의 17개와나고야의정서에서만 규정하고 있는 5개)를 규정하고 있다. 그러나 정부안은 13개의 용어를 규정하고 있다. 셋째, 정부안의 적용범위, 국가연락기관, 국가책임기관및 기타 조항들은 수정되어야 한다. 결론적으로 말하면, 정부안은 전체적으로 나고야의정서의 조항들과 일치하여 정확하게 규정하여야 한다.