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Retinex를 이용한 빛의 변화에 안정적인 모션추적 콘텐츠연구
성기영,양황규,Sung, Ki-Young,Yang, Hwang-Kyu 한국전자통신학회 2011 한국전자통신학회 논문지 Vol.6 No.2
This paper depict the system which reacts staly towards light changes, when object is detected using retinex. Previous interaction system does not react to transient light conditions. Since non-lighting condition was constructed in the limited space. However, if interaction contents work in the inside where the light changes, the light input is changed as the time goes by when the system detect objects with super sensitive camera few lighting transients makes system trouble. Thus, lighting is one of the most significant factors of the system.
심해저 채광로봇 ‘MineRo’ 망간단괴 파쇄 성능시험
성기영,민천홍,김형우,이창호,오재원,홍섭 한국해양과학기술원 2014 Ocean and Polar Research Vol.36 No.4
This paper presents data from performance tests carried out to assess a manganese nodule crusher. Manganese nodules should be crushed into smaller pieces in order to assure the slurry flow of the lifting system. Both artificial nodules and real manganese nodules are used to evaluate nodule breaking ability of the crusher. The crushing performance of the crusher depends on the flow rate and pressure of the power transmission device. The size of the crushed manganese nodules also depends on the shape of the crushing drum. In this paper, several comparative tests are carried out to evaluate and improve the crushing performance and find the optimal design point of the crusher.
액와접근법과 흉부접근법을 통한 내시경 갑상선 절제술의 임상적 고찰
성기영,오세정,백종민,이도상,김욱,박일영,원종만,Gi Young Sung,M,D,Se Jeong Oh,M,D,Jong Min Baek,M,D,Do Sang Lee,M,D,Wook Kim,M,D,Il Young Park,M,D,and Jong Man Won,M,D 대한갑상선-내분비외과학회 2004 The Koreran journal of Endocrine Surgery Vol.4 No.1
Purpose: The thyroid suregry has recently become one of the newest fields for the application of endoscopic surgery. We have performed endoscopic thyroidectomy by an anterior chest approach and an axillary approach. In this study, we evaluated these two types of endoscopic procedures with regard to efficacy and patients' complaints after surgery.Methods: Between December 2000 and March 2002, 41 patients were treated by endoscopic thyroidectomy via axillary or anterior chest approach. Each procedure was performed by one surgeon under a general anesthesia. We analysed the operating time, postoperative complications, postoperative scar, the degree of pain to assess the surgical invasiveness of each procedure.Results: Three cases treated using anterior chest approach, and 2 cases treated using axillary approach were converted to conventional thyroidectomy. The mean age of patients was 36 years in anterior chest approach group and 30 years in axillary approach group. The operation time was 238⁑60 (160∼370) minutes in anterior chest approach and 178⁑71 (100∼295) minutes in axillary approach. Postoperative complications are; 1 case of a minimal hematoma, 3 cases of minor wound infection, 3 cases of chest pain in anterior chest approach group, and 1 case of a minimal hematoma, 1 case of transient recurrent laryngeal nerve injury, 1 cases of transient swallowing difficulties in axillary approach group.Conclusion: Endoscopic (gasless and axillary approach) thyroidectomy is a safe and effective procedure. Gasless endoscopic thyroidectomy is a useful procedure for unexperienced surgeon due to safety. Endoscopic thyroidectomy by the axillary approach is a better effective procedure with good cosmetic result for a unilateral tumor especially in young women. (Korean J Endocrine Surg 2003;4:26-30)
국민수용성 관점의 자율주행자동차 운전능력 검증방안 제안
성기영,김현 대한교통학회 2021 대한교통학회 학술대회지 Vol.85 No.-
자율주행자동차의 상용화는 자율주행자동차가 도로 주행이 가능하도록 도로교통법과 자동차관리법 개정, 그리고 자율주행자동차의 교통사고처리에 관한 처리규정이 마련되어야 한다. 제네바 국제협약, 비엔나 국제협약에서는 현재까지 자율주행자동차의 운전면허 필요 유무와 그 기준에 관한 표준이 정해져 있지 않다. 이런 시점에서 본 연구에서는 자율주행자동차의 도로 주행허용 관련 통행규칙 준수 능력과 이를 증명할 수 있는 운전면허 필요성과 함께 자율주행자동차의 교통사고처리 등에 대해 국민 수용의식조사 기반으로 MIMIC 모형을 구축하였다. 그 결과 자율주행자동차로부터 얻는 기대성능과 이를 누리기 위한 노력, 그리고 자율주행자동차의 인지도가 높을수록, 자동화 기능(ACC)의 사용 경험이 높을수록, 그리고 평소 자동화 시스템에 대한 신뢰성이 높을수록 자율주행자동차의 운전면허 도입 요구가 높다는 점을 확인할 수 있었다. 본 자율주행자동차 국민 수용성은 18세 이상 국민대상으로 신뢰수준 95%(±2.2% 표준오차)의 조사 결과에 해당한다.
형광성 Pseudomonas, SSL3 균주의 생존율에 미치는 Trehalose의 효과
성기영,류옥란,최원열,Seong, Ki-Young,Ryu, Ok-Ran,Choi, Won-Yeol Korean Society of Soil Science and Fertilizer 2000 한국토양비료학회지 Vol.33 No.4
To make a better use of the beneficial bacterial inoculants in the agricultural practice, dry forms of bacterial fertilizer or pesticides are prepared with carrier materials. During the drying process of bacterial inoculant, most of the cells face a severe osmotic pressure and dehydration, and die off. Our study describes the effect of osmoprotectants such as trigonelline and trehalose on the survival of bacterial cells in high salt concentration and drying conditions. A fluorescent Pseudomonas, strain SSL3, used in this study, could grow in high salt concentration of upto 5% but the cells could not overcome the growth retardation at over 7% of salt concentration. The addition of trigonelline, even on small amount, in liquid medium containing 4% NaCl was detrimental to the cell. However, the addition of trehalose of upto 10 mM to the liquid medium containing 4% NaCl, enhanced cell growth. The cell growth was retarded when 150mM trehalose was added to the medium. Upon dry formulation of cells, trehalose was added. And the dry cells were inoculated into the soil to determine the effect of osmoprotectants on the survival of the cells. The survival of the cells, both in wet or dry soil, was improved by the addition of trehalose during the dry cell formulation. The positive effect of trehalose on the cell survival at $-20^{\circ}C$ and $-70^{\circ}C$ was oven more pronounced. The FTIR (Fourier transformation infra-red) spectroscopic analysis showed that the change of the 2nd amide group was reduced by adding trehalose to the medium containing 4% NaCl. These results suggest that trehalose can protect the cell membrane from dryness or high concentration of salt, thereby diminishing the sudden change of the protein structure of the cell membrane and, as a consequence, improving the cell survival.
자율자동차 수용성 요인분석에 관한 연구 : 구조방정식 모형을 중심으로
성기영,오주택,김현 한국ITS학회 2020 한국ITS학회논문지 Vol.19 No.1
In this study, a study was conducted to analyze the factors affecting the acceptability for autonomous vehicles. The previous studies were reviewed to sturdy the acceptance factors and The PLS Structral equation model was used to analyze the acceptance factors. While the existing research focused on technical safety, this study comprehensively analyze safety, convenience, economy, environment, and ethical factors. The PLS model was analyzed to significant the factors that affect the acceptability for autonomous vehicles in the order of safety, economy, convenience and environment. 본 연구에서는 자율주행자동차의 수용성에 미치는 주요 요인들을 분석하고자 하였다. 본연구에서는 우리나라 정서에 맞는 수용 요인들을 분석하기 위해서 자율주행자동차 수용성에대한 기존 선행 연구들을 분석하였고 PLS-구조방정식 모형을 중심으로 요인분석 연구를 진행하였다. 기존 연구에서는 기술수용모델에 의한 기술적인 안전성 연구에 중점을 두었다면, 본연구는 우리나라 자율주행자동차 수용성에 대하여 새로운 시각으로 안전성 뿐만 아니라 편의성, 경제성, 환경성, 윤리성 요인등을 동시에 종합분석 하였다. 분석결과, 자율주행자동차의 수용성에 미치는 잠재요인은 안전성, 경제성, 편의성, 환경성 순으로 중요도가 분석되었다.