http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
얼굴 영역 추적을 통한 향상된 손 영역 추적에 관한 연구
손지수 ( Jisoo Son ),김동규 ( Dongkyu Kim ),이승호 ( Seung Ho Lee ),노용만 ( Yong Man Ro ) 한국정보처리학회 2015 한국정보처리학회 학술대회논문집 Vol.22 No.1
손 영역 추적에서는 피부색이 가장 유용한 정보 중 하나이다. 그런데 손 영역과 얼굴 영역이 서로 겹치거나 가까이 있을 때 손 영역의 추적결과인 바운딩이 얼굴 영역까지 불필요하게 확장되는 문제점이 존재한다. 본 논문에서는 얼굴 영역 추적결과를 손 영역 추적에 사용한다. 구체적으로, 얼굴 영역 내에 손 영역의 바운딩이 침투하지 않도록 한다. 실험결과, 얼굴 영역 추적결과를 사용한 경우 그렇지 않은 경우에 비해 손 영역의 바운딩을 정확히 예측하였으며 초당 30~35 프레임의 빠른 계산속도를 유지하였다.
손용기(Yong-gi Son),유정호(Jeong-ho Yoo),유영숙(Young-sook Yoo),김종춘(Jong-choon Kim),이성욱(Sung-wook Lee),조인억(In-eok Cho) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As the concerns regarding global worming were increased, the pressure of greenhouse gas(GHG) emission reduction on mobile source was also increased. Carbon Dioxides contribute over 90% of total GHG emission and the mobile source occupies about 20% of this CO₂ emission. Therefore automotive exhaust is suspected to be one of the major reasons of the rapid increase in greenhouse effect gases in ambient air. In this study, in order to investigate CO₂ emission factor characteristics from passenger cars(PC), which is the most dominant vehicle type in Korea, 103 vehicles were tested on the chassis dynamometer. CO₂ emissions and fuel efficiency were measured. The emission factor characteristics by displacement, gross vehicle weight, vehicle speed and CVS-75/vehicle speed mode were discussed. Test modes were vehicle speed modes and CVS-75 mode that have been used to develop emission factors and to regulate for light-duty vehicle in Korea. It was found thai CO₂ emissions showed higher large displacement, heavy gross vehicle weight, low vehicle speed and CVS-75 mode than small displacement, light gross vehicle weight, high vehicle speed and vehicle speed mode, respectively. From these results, correlation between CO₂ emission and fuel efficiency was also determined. The results of this study will contribute to domestic greenhouse gas emissions calculation and making the national policy for climate change.
손선영(Sunyoung SON),Shin-ichi NISHIDA,이종형(Jong-hyung LEE),김영태(Young-tae KIM),이도경(Do-kyung LEE),손용제(Yong-jea SON),장현덕(Hyun-duck Jang) 대한기계학회 2010 大韓機械學會論文集A Vol.34 No.4
새로운 티타늄기 MMCs(W/ Ti-6Al-4V)에 대한 기계적 특성에 대한 연구를 행하여 평가한 결과를 나타내었다. HIP(hot isostatic pressing) 제조법과 RS(Rotary Swaging) 2 차 가공을 통하여 텅스텐 섬유 함유율이 각각 6, 9, 12 vol%인 W/Ti-6Al-4V MMCs 를 제작하였으며, 경도는 기존의 Ti-6Al-4V 합금과 비교하여 20-30%, 인장강도는 50%(비강도-38%) 높은 값을 얻었다. 섬유 함유율 9vol.% 에서 가장 높은 인장 값을 나타내었으며, MMCs 에서 메트릭스와 계면 사이에 생성된 확산상에 의해서 경도 및 인장강도가 향상되었다. 또한 피로 강도를 향상 시키기 위한 방법으로 메트릭스의 질적 향상을 위한 HIP 제작조건에 대한 추가적인 연구가 필요하다. The objective of this study is the estimation of the mechanical properties of HIP-treated MMCs by an optimized manufacturing process. The Ti-MMCs were fabricated by HIP and rotary swaging (RS) for secondary processing. The Ti-MMCs with different tungsten fiber contents of 0, 6, 9, and 12 vol% were subjected to tensile tests, fatigue tests, and hardness tests. The results show that the hardness values of Ti-MMCs increased with the increasing volume percent of tungsten fibers, the tensile strength increased by approximately 50% (specific strength: 38%) at the 9 vol%. The value of tungsten-fiber orientation F affects the tensile strength. The fatigue strengths of the Ti-MMCs did not improve. HIP is a useful manufacturing method for Ti-MMCs and RS is an important process for improving fiber orientation during secondary processing.
손대용(Dae Yong Son),우경인(Kyung In Woo) 대한안과학회 2016 대한안과학회지 Vol.57 No.1
Purpose: We report the first case in Korea of rapid bone formation on a subperiosteal orbital hematoma after trauma. Case summary: A 10-year-old boy who was in the intensive care unit after trauma showed proptosis and ocular movement limitation of the right eye associated with subperiosteal hematoma. On ocular examination, 3 mm of proptosis and limitation of right eye movement were observed; however, visual acuity was not decreased. At 1 month after the trauma, orbital computed tomography (CT) showed new bone formation at the margin of the hematoma border although the size of the hematoma decreased. The patient underwent hematoma and bony tissue removal using anterior orbitotomy approach. A new bone was formed between the orbital border and hematoma from the anterior orbital margin to the orbital apex. During pathological examination, woven bone tissue with fibrotic tissue was observed in the hematoma wall. One year after surgery, the patient’s proptosis and limitation of ocular movement disappeared without any evidence of new bone formation. Conclusions: Waiting for spontaneous absorption of orbital subperiosteal hematoma is usually recommended unless there is significant functional impairment. However, as in our case, new bone formation could occur during a short period of less than 1 month; imaging follow-up is necessary in patients having intensive care or showing delayed absorption of a hematoma.