외이도에 발생한 멜라닌세포성 모반의 특징

오정인,김한신,최규영,조성진,김창우 대한이비인후과학회 2010 대한이비인후과학회지 두경부외과학 Vol.53 No.2

Background and ObjectivesZZA nevus is a benign tumor composed of nevus cells that are derived from melanocytes. It may occur anywhere on the skin, but its appearance in the external auditory canal (EAC) is very rare. The aim of this study is to analyze the characteristics of melanocytic nevi of the EAC. Subjects and MethodZZWe retrospectively reviewed the medical records of 10 consecutive patients who underwent surgical excision of EAC nevi between March 2004 and February 2009. ResultsZZThe size of these nevi ranged from 4 mm to 12 mm in diameter, with an average of 6.1 mm. Otoscopic examination revealed 7 cases of dome-shaped mass and 3 cases of papillomatous mass. Histological examinations revealed intradermal nevi in all cases, but there was one case of dysplastic nevus and two cases of papillomatous nevi that coexisted with cholesteatoma. These nevi were composed of epidermal hyperplasia and necrobiotic keratin debris within the papillomatous cleft. There has been no recurrence in these patients after 6 to 26months (average 12.6 months) of follow-up. ConclusionZZA melanocytic nevus of the EAC may be composed of dysplastic cells or coexist with cholesteatoma; in particular, its gross appearance is papillomatous. Therefore, every nevus should be excised to make a histopathological diagnosis. Korean J Otorhinolaryngol-Head Neck Surg 2010;53:84-8

공범성립에 있어서 위법의 연대성에 대한 비판적 고찰

오정용(吳貞勇) 전북대학교 법학연구소 2011 法學硏究 Vol.34 No.-

공범은 정범의 위법한 행위에만 관여하는 것이 아니라 경우에 따라서는 정범의 적법행위에 관여하여 자기가 원하는 범죄를 실현하는 것도 가능하다. 이러한 경우에는 처벌되지 않는 자를 이용한다고 하여 주로 간접정범으로 논하는 것이 일반적이다. 그렇지만 이러한 경우를 항상 정범으로 취급하는 것은 정범의 범위를 확장하는 것이 되며, 이는 제한적 정범개념을 취하고 있는 현재의 입장과도 어울리지 않을 뿐만 아니라, 또한 공범으로 처벌할 수 없다는 이유로 정범으로 취급하게 된다는 것도 정범개념의 우위성이라는 측면에서 볼 때도 타당하지 않다고 할 것이다. 이러한 문제의 원인은 다름 아닌 위법의 연대성을 철저히 관철하려고 하는 점에 있다. 통설적 지위에 있는 제한종속성설에 따르면 정범의 위법성은 예외 없이 공범에게 영향을 미치고, 정범이 위법한 이상 공범은 적법하게 될 수 없다는 결론을 내리게 된다. 하지만 이러한 이해가 과연 타당한 것인가라는 점에 의문을 가지게 된다. 그렇다면 위법은 상대적으로 작용할 수 없는가의 문제, 즉 이것은 정범행위의 성질이 공범성립에 어떠한 영향을 미치는가의 문제라 볼 수 있으며, 또한 그러한 관점에서 볼 때 공범종속성을 어떻게 파악할 것인가의 문제로도 이해할 수 있을 것이다. 요컨대 공범종속성은 공범이 성립하기 위해서 정범이 어떠한 범죄성립요소를 구비해야 하는지라는 ‘공범성립의 필요조건’의 문제와 그러한 요건을 갖추었을 때 정범의 어떠한 요소가 공범에 연대되어야 하는지라는 ‘정범요소의 연대성’의 문제로 나누어 살펴볼 필요가 있고, 결국 이것은 다수의 관여자가 있는 경우에서의 법적 판단, 즉 위법은 상대적으로도 평가될 수 있는 문제로 취급될 수 있다는 것을 의미한다 할 것이다.

대기행렬을 활용한 최적의 자원 할당 의사 결정 방법 제안 연구

오정인,위경수,노석호,김재준 대한건축학회 2022 대한건축학회논문집 Vol.38 No.9

The purpose of this study is to help the construction manager make decisions in progressing the construction plan by proposing the optimal decision method using the Queueing Model. Resource management can determine the success of construction. Many studies have been proposed for resource management, but have not been evaluated objectively and quantitatively. In this paper, we analyze the process plan to be redesigned according to the productivity evaluation through the optimal resource allocation decision- making method. First, analysis of case projects and queuing models. Second, the optimal number of servers is determined through economic analysis after resource allocation. Third, enter the date and quantity in the BIM to suggest the best decision method. Through the proposed method, 22.6% (24.74 million won) could be saved compared to the existing plan. The productivity of the process plan could be evaluated objectively and quantitatively. As a result, the optimal decision-making method using queueing model can help reduce costs and help construction managers make decisions by redesigning process plans based on productivity assessments. 본 연구의 목적은 대기행렬을 이용하여 최적의 결정방법을 제안함으로써 시공관리자가 시공계획하는데 의사결정을 돕는 것이다. 자원 관리는 건설의 성공을 결정할 수 있다. 자원 관리를 위해 많은 연구가 제안되었지만 객관적, 정량적으로 평가되지는 않았다. 본 논문에서는 최적의 자원배분 의사결정 방법을 통해 생산성 평가에 따라 재설계될 공정계획을 분석한다. 첫째, 사례 프로젝트 및 대기 행렬 모델 분석. 둘째, 자원 할당 후 경제 분석을 통해 최적의 서버 수를 결정한다. 셋째, BIM에 날짜와 수량을 입력하여 최선의 의사결정 방법을 제안한다. 제안 방식을 통해 기존 요금제 대비 22.6%(2,474만원)를 절감할 수 있었다. 공정계획의 생산성은 객관적이고 정량적으로 평가될 수 있다. 결과적으로, 대기행렬 모델을 이용한 최적의 의사결정 방법은 생산성 평가를 기반으로 공정 계획을 재설계하여 비용을 절감하고 건설 관리자가 의사 결정을 내리는 데 도움이 될 수 있다.

효과적인 데이터링크 시험 평가를 위한 통합 분석 시스템 개발

오정인,정영환,이정환,위성혁 한국통신학회 2022 韓國通信學會論文誌 Vol.47 No.8

In this paper, we introduce a data link integration analysis system designed to effectively perform the integrated analysis of corresponding data links in test evaluation, unit testing, and integrated testing of weapon systems using tactical and weapon data link. Tactical Digital Information Link standards, log analysis and message sending and receiving sequences related to system linkage rules, data link log analysis, and analysis results are essential verification factors in Tactical Digital Information Link verification tests. The integrated data link analysis system set the tactical data link standards and system inter working rules in advance to solve the previous problems, so that Link-16 and MDIL log analysis were easy. It is useful for sending and receiving messages and fields essential for data link analysis, analyzing field value validity, and managing analysis results. Previously, it took considerable time, people, and understanding of links to analyze them and produce results. In addition, the data link integrated analysis system presented in this paper is framework-based, making it easy to scale, and is simple to customize to fit the applied tactical data links for each weapon system. Therefore, in this paper, we describe the design and implementation of a data link integration analysis systems in detail. 본 논문에서는 전술데이터링크 및 무장데이터링크를 사용하는 무기체계의 시험평가나 단위시험, 통합시험 등에서 해당 데이터링크 통합분석을 효과적으로 수행하기 위해 설계 된 데이터링크 통합분석 시스템을 소개한다. 전술데이터링크 표준, 체계 연동 규칙과 관련된 로그분석 및 메시지 송/수신 시퀀스, 데이터링크 로그분석, 분석 결과등은 전술데이터링크 확인 시험에서 필수 확인 요소로 기존에는 이를 분석하고 결과 도출하는데 시간과 인력, 링크에 대한 이해력이 상당히 필요했다. 데이터링크 통합 분석 시스템은 앞서 제기되었던 문제들을 해결할 수 있도록 전술데이터링크 표준 및 체계 연동규칙을 사전 설정해 Link-16 및 MDIL 로그분석을 용이하게 했다. 링크데이터 분석에 필수적인 메시지 및 필드 송/수신, 필드 값 유효성 분석과 분석결과 관리에 유용하다. 또한, 본 논문에서 제시된 데이터링크 통합 분석 시스템은 프레임워크 기반으로 설계되어 확장성이 용이하며, 각 무기체계별 적용된 전술데이터링크에 맞게 변경이 간단하다.

원발성 안와 종양에 대한 신경학적 고찰

오정재(Jung Jae Oh),정동섭(Dong-Sup Chung),윤완수(Wan-Soo Yoon) 대한두개저학회 2021 대한두개저학회지 Vol.16 No.2

Background : Primary orbital tumors are relatively rarely encountered by neurosurgeons. Several approaches to primary orbital tumors have been used depending upon the tumor location, preoperative diagnosis, and the surgeon’s experience. Here, we present our clinical experience with primary orbital tumors from a neurosurgical perspective. Methods : A total of 11 patients with primary orbital tumors who underwent surgical resections between January 2011 and December 2018 were included in the study. All clinical data, including preoperative symptoms, visual function, operation record, histopathology, and radiologic imaging were reviewed. Results : The median age of the patients was 55 years, and diplopia and impaired vision were the most common symptoms. Depending upon the tumor location in the orbit, the intraconal type was seen in eight patients, the intracanalicular type was seen in two, and the extraconal type was seen in one. Surgery on these tumors was performed by the transcranial approach in nine patients and the endoscopic endonasal approach in two, depending upon the meridian of the optic nerve. Gross total resection was completed in five patients, subtotal resection in one, partial resection in one, and biopsies in four. Postoperatively, visual function was improved in two of four (50%) patients, and preexisting vision was preserved in the other nine patients. Conclusions : Although the experience with primary orbital tumors was limited, we suggest that favorable surgical outcomes can be achieved with an appropriate surgical approach by understanding the anatomy of the orbit, especially the meridian of the optic nerve.

정선

오정 문예운동사 1993 문예운동 Vol.- No.49

후면토릭 RGP 콘택트렌즈를 이용한 원추각막의 시력교정 증례

오정재(Jeong Jae Oh),최진석(Jin Seok Choi) 대한검안학회 2015 Annals of optometry and contact lens Vol.14 No.1

Purpose: To report a case of correcting irregular astigmatism in severe keratoconus with back toric rigid gas permeable (RGP) contact lens. Case summary: A 43-year-old man visited our clinic for correction of decreased visual acuity on the both eyes. The refractive status of both eyes was over mean 5 diopters. The best corrected visual acuity (BCVA) of right was 20/25 and BCVA in left eye was 20/100. The corneal astigmatism was 1.75 diopters in right eye and 6.5 diopters in the left eye. By topography of both eyes, the right eye has minimal degree of keratoconus and the left eye was more advanced stage of keratoconus. He could not wear the RGP contact lens with multi-curved or high eccentricity due to corneal irregular astigmatism. Using back toric RGP contact lens, the right eye’s BCVA was improved 20/25 and left eye’s BCVA was improved 20/40. There were no significant complications or abnormal finding in the corneal surface. Conclusions: Back toric RGP contact lens appears to be effective in improving BCVA and reducing corneal irregular astigmatism of keratoconus when multi-curved or high eccentricity RGP contact lens failed.

입력전압 소거를 이용한 AC/DC Boost Converter 전류 제어기

오정철(Jeong-Cheol Oh),김인혁(In-Hyuk Kim),조경훈(Kyoung-Hun Cho),손영익(Young Ik Son) 대한전기학회 2012 정보 및 제어 심포지엄 논문집 Vol.2012 No.10

짧은 안축장의 환자에서 각막곡률의 정도에 따른 인공수정체도수 산출 공식의 정확성 분석

오정재,최진석,JeongJae Oh,Jin Seok Choi 대한안과학회 2014 대한안과학회지 Vol.55 No.6

Purpose: To evaluate the accuracy of intraocular lens (IOL) power calculations between Hoffer Q and other formulas according to corneal curvature by comparing the results of cataract surgery and calculation of chosen formulas in short axial lengths. Methods: We performed a retrospective analysis of patients who underwent cataract surgery from January 1st, 2012 to June 12th, 2012. The patients were selected if their axial length was below 23.00 mm and 77 patients (90 eyes) were included in the present study. The patients were divided into 2 groups according to mean corneal curvature below 44.0 D and over 45.0 D. IOL power was calculated using the Hoffer Q and SRK II, SRK-T and Holladay I formulas and the error between the calculations and refractive outcome of cataract surgery were measured. The accuracy of each formula was evaluated by comparing the error between the 2 groups. Results: Hoffer Q formula showed a higher predictive accuracy than other formulas regardless of corneal curvature in eyes with short axial lengths (p < 0.001, p = 0.023). Particularly, SRK II, SRK-T and Holladay I showed a lower predictive accuracy in eyes with flat corneal curvature than Hoffer Q (p < 0.001, p = 0.215). Conclusions: In eyes with short axial lengths, preoperative predicted IOL power calculations showed better accuracy with Hoffer Q formula than SRK II, SRK-T and Holladay I formulas. SRK II, SRK-T and Holladay I formulas showed a lower predictive accuracy in flat corneal curvature eyes than steep corneal curvature eyes with short axial lengths. We hypothesize that SRK II, SRK-T and Holladay I tend to underestimate effective lens position in eyes with short axial lengths indicating Hoffer Q formula is more accurate. J Korean Ophthalmol Soc 2014;55(6):826-832

Identification of causative chemicals in contaminated soil from chemical accident using suspect/nontarget analytical method

오정은 환경독성보건학회 2022 한국독성학회 심포지움 및 학술발표회 Vol.2022 No.5