SMART 연구로 3차원 성능 해석기 개발(II) - 전/후처리 프로세서

윤한영,이규형,황영동,김희철,지성균 한국특허학회 2004 특허학연구 : 한국특허학회지 Vol.6 No.4

원전 CMFD해석을 위한 CUPID 코드 개발

윤한영 한국유체기계학회 2013 한국유체기계학회 학술대회 논문집 Vol.2013 No.11

Recent Improvements in the CUPID Code for a Multi-Dimensional Two-Phase Flow Analysis of Nuclear Reactor Components

윤한영,이재룡,김형래,박익규,송철화,조형규,정재준 한국원자력학회 2014 Nuclear Engineering and Technology Vol.46 No.5

The CUPID code has been developed at KAERI for a transient, three-dimensional analysis of a two-phase flow in lightwater nuclear reactor components. It can provide both a component-scale and a CFD-scale simulation by using a porousmedia or an open media model for a two-phase flow. In this paper, recent advances in the CUPID code are presented inthree sections. First, the domain decomposition parallel method implemented in the CUPID code is described with theparallel efficiency test for multiple processors. Then, the coupling of CUPID-MARS via heat structure is introduced,where CUPID has been coupled with a system-scale thermal-hydraulics code, MARS, through the heat structure. Thecoupled code has been applied to a multi-scale thermal-hydraulic analysis of a pool mixing test. Finally, CUPID-SG isdeveloped for analyzing two-phase flows in PWR steam generators. Physical models and validation results of CUPID-SGare discussed.

Homo Soccers의 동네 축구 이야기 (18) : 머나먼 원정경기

윤한영 열린전북 2012 열린전북 Vol.154 No.-

Perceptions of Prophylactic Mastectomy in Korea

윤한영,심정수,이종원 대한성형외과학회 2016 Archives of Plastic Surgery Vol.43 No.1

Background Increasingly, prophylactic mastectomy has been evaluated as a treatment of breast cancer. Hereditary breast cancer now accounts for approximately 5%–10% of all cases of breast cancer, meaning that the widespread implementation of prophylactic mastectomy may significantly reduce the occurrence of breast cancer. However, prophylactic mastectomy is rarely performed in Korea. Therefore, in this study, we assessed Koreans’ attitudes toward and awareness of preventive mastectomy. Methods This was a prospective study of a cohort of patients attending outpatient clinics and their relatives. Data were collected using self-administered questionnaires assessing sex, age, educational level, knowledge of breast cancer, understanding of prophylactic mastectomy, attitudes toward prophylactic mastectomy, and reasons for choosing prophylactic mastectomy. Results Sixty-five patients were included. Most patients (36.9%) were between 40 and 49 years of age and 58.4% were college graduates. Only six respondents (9%) understood prophylactic mastectomy, and 17 respondents (27%) stated that they would agree to undergo prophylactic mastectomy if necessary. Reasons given for refusing prophylactic mastectomy included aesthetic concerns (38%), the perception that it would not cure the disease (26%), possible surgical complications (24%), and financial cost (6%). Conclusions In this study, most of the respondents showed a poor knowledge of prophylactic mastectomy. Ultimately, it will be necessary to establish medical guidelines for patients with a high risk of breast cancer, with the objective of providing accurate information and proper treatment at hospitals.

Delayed Reduction of Nasal Bone Fractures

윤한영,한동길 대한두개안면성형외과학회 2016 Archives of Craniofacial Surgery Vol.17 No.2

Background: Nasal bone fractures are managed by closed reduction within the 2-week period, and are managed by secondary correction after this time. There is little literature on the delayed reduction for nasal bone fractures beyond the 2-week duration. We report our experience with nasal fractures, which were reduced beyond this period. Methods: A retrospective review was performed for all patients who had undergone closed reduction of isolated nasal bone fracture. Patients were included for having undergone reduction of nasal bone fractures at or more than 2 weeks after the injury. Medical records were reviewed for demographic information, injury mechanism, fracture type, delay in treatment, and cause for delay. Postoperative outcomes were evaluated using computed tomography images. Results: The review identified 10 patients. The average reduction time was 22.1 days. Five of patients underwent reduction between days 15 and 20, and the remaining five patients underwent reduction between days 21 and 41. The postoperative outcomes were excellent in 8 patients and good in 2 patients. Conclusion: Outcomes were superior for nasal fractures with displaced end plates and multiple fracture segments. Our study results appears to support delayed reduction of isolated nasal fractures in the presence of factors that delay bony reunion.

공항 면세점 위치와 판매품목별 매출액 간 관계성 연구: 인천국제공항 출국장 및 입국장 면세점 사례를 중심으로

윤한영,조성환 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.2

On-arrival duty free will prevent Korean outbound passengers from keeping the duty free items they purchased at the departure during their travel. Most Korean tourists have requested the airport authority to install on-arrival duty free since the grand-opening of Incheon int'l airport. Considering the fierce hub airport competition in the North East Asian region, the Korean government's decision to install on-arrival duty free is regarded as a well-timed intervention. The purpose of the research was to analyze sales correlation based on a comparison of sales of both departure and on-arrival duty free and to propose an administrative implication. Compared to business conglomerates running departure duty free, on-arrival duty free operators, who are small or medium companies, have weakness in product composition, marketing, and merchandising capabilities. According to the analysis, outbound passengers, who purchased fashion accessories and leather products at the departure duty free, tended to purchase cosmetics/perfume or liquor on the arrival duty free. Such complementary purchasing behavior of passengers showed there is barely a negative correlation between departure and on-arrival duty free. 입국장 면세점은 내국인 여객들이 출국장 면세점에서 구매한 물품을 여행 기간 내내 휴대해야 했던 불편함이 해소해 준다. 공항 입국장 면세점 설치는 많은 내국인 여객들이 오래 전부터 요구해 온 사안으로 최근 해외여행이 보편화되고 동북아 주변국 공항들이 허브공항 경쟁을 강화하면서 이번 정부의 결정은 매우 시의 적절했다는 평가를 받고 있다. 본 연구는 출국장 면세점 및 입국장 면세점의 일별 매출 자료를 토대로 판매품목 별 매출 액 간 관계성을 분석하고자 하였다. 이러한 관계성 분석을 토대로 인천국제공항 입국장 면세점 개장이 기존 출국장 면세점 매출에 긍정적 또는 부정적 영향을 미쳤는지 실증적으로 분석하고 이를 토대로 정책적 시사점을 제시하고자 하였다. 중소기업이 입국장 면세점 사업자로 선정되고 판매품목이 제한되어 가격경쟁력과 상품구성 및 기획력 등에서 대기업 위주의 출국장 면세점 사업자와 대등한 경쟁이 될 수 없는 취약점을 내포하고 있다. 향후 현재와 동일한 여건이라면 출국장 면세점에서 고관여 제품(패션악세사리, 가죽피혁 등)을 구매한 출국여객과 이외의 상품을 구매한 경우 출입국시 상호 보완적인 구매행태를 보이고, 매출에 있어 자기잠식이 발생하지 않고 있어 사업초기에 전개하는 상품기획과 마케팅 활동을 더욱 활성화할 때 매출증대와 인지도를 강화할 수 있겠다는 시사점을 도출하였다.

SMART 연구로 3차원 성능 해석기 개발(I)

윤한영,이규형,황영동,김희철,지성균 한국특허학회 2004 특허학연구 : 한국특허학회지 Vol.6 No.4

여객의 해외여행 관광지 관광체험과 관광만족에 영향을 미치는 국적항공사 객실서비스 품질 요인 연구

윤한영(Han-Young Yoon),장지승(Ji-Seung Jang) 한국산학기술학회 2019 한국산학기술학회논문지 Vol.20 No.9

본 연구는 국적 항공사를 이용하여 해외여행을 떠나는 아웃바운드 여객들이 인식하는 국적 항공사의 객실서비스 품질이 그들의 관광지 관광체험과 관광만족도에 어떠한 영향을 미치는지 실증 분석하였다. 왜냐하면 국적항공사는 우리나라를 대표하는 항공사이기 때문에 한국을 여행하려는 외국인 인바운드 여객의 긍정적인 국적항공사의 서비스품질 인식은 한국여행 관광만족을 증대시킬 수 있는 중요한 요인이 될 수 있기 때문이다. 실증분석을 위해 국적항공사를 이용하는 관광이 여행목적인 내국인 승객들을 대상으로 설문지를 배포 후 회수하여 실증분석을 실시하였다. 연구자는 해외로 아웃바운드 관광을 떠나는 내국인 승객들에 대한 실증분석을 통해서 유의미한 분석결과가 도출된다면, 역으로 한국을 관광지로 하여 인바운드 관광을 오는 외국인 여행객들에게도 적용가능한 시사점을 제시할 수 있다고 판단하였기 때문이다. 따라서 여행객이 인식하는 항공사 객실서비스 품질, 관광지 관광체험 및 관광만족도를 선행연구들을 통해 이론적 측면에서 고찰하고 잠재변수들 간 통계적으로 유의한 인과관계를 도출하였다. 분석 결과 항공사 객실서비스 품질은 친절성, 반응성, 용이성 및 유형성으로 구분되었다. 객실서비스 품질에 대한 긍정적인 인식은 인지적 관광경험과 정서적 관광경험을 매개로 하여 궁극적으로 관광만족도에 영향을 미치는 것으로 판명되었다. This study analyzed empirically the effects of the perception of outbound passengers, who flew from Korea to overseas tourist destinations, on the cabin service quality, tourist experience, and tourist satisfaction. For empirical analysis, a survey was given to Korean passengers using a national carrier of South Korea. Based on empirical analysis, the researchers judged that the analysis results and implications could be applied to inbound foreign passengers who visited Korea for the tourism purposes if researchers generated significant results from empirical analysis. This paper designed a research model that represented the meaningful relationship among, airline cabin-service quality, tourist experience, and tourist satisfaction following preceding research. According to the analysis, that factors that consisted of the cabin service quality had a significant effect on the tourist satisfaction with a mediating effect of both the cognitive and emotional tourist experience. Therefore, the perception on airline"s cabin service quality of the national carrier would be a starting point that can help improve the tourist satisfaction.

모델 및 시뮬레이션 기반 원전 안전성 향상

윤한영(Han Young Yoon),박익규(Ik-Kyu Park),이재룡(Jae Ryong Lee),이승준(Seung Jun Lee),조윤제(Yun Je Cho),도성주(Seong Ju Do) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.08