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김성원(DungWon Kim),오세훈(SeHun Oh),이영호(YoungHo Lee),김형태(HyungTae Kim),허정우(JungWoo Hur),김영록(YoungRock Kim),나민환(MinHwan Na),안중제(JoongJe Ahn) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
The Stiffiness of Body B.I,W is the important factor of a vehicle performance. For high stiffness, analyze the body structure using HSA method. And find the high influence position of stiffness for sensitivity analysis. According to the result of sensibility analysis, we developed high stiffness body tough improved joint structure and structure foam(CBS). This paper describes the relation of high stiffness body for ride and handling performance through the real vehicle test applied improvements structure. These proposed body structure can be provide the guideline for development better vehicles.
차선과 횡단보도 학습데이터 기반 도로환경 모니터링 서비스
현재훈(JaeHoon Hyeon),오세훈(Sehun Oh),황정래(JungRae Hwang) 대한공간정보학회 2021 한국지형공간정보학회 학술대회 Vol.2021 No.11
본 연구에서는 MMS(Mobile Mapping System) 차량을 통해 수집된 시인성이 약하거나 훼손된 차선과 횡단보도 등 도로환경 데이터를 학습하여 차선과 횡단보도 상태를 가시화하는 스마트 도로환경 모니터링 서비스를 개발하였다. 이러한 도로환경 모니터링 서비스는 수동적이고 무분별한 도색작업을 운영하는 대부분의 지자체에 향후 도로환경의 체계적 관리와 도색작업 시 효율적인 활용이 가능할 것으로 기대되며, 스마트시티를 추진하는 지자체에 도로환경 모니터링에 대한 비즈니스 서비스모델로 제시가 가능할 것으로 판단된다.
이규영 ( Gyuyoung Lee ),이승훈 ( Seunghun Lee ),오세훈 ( Sehun Oh ),최민지 ( Minji Choi ),이용우 ( Yong-woo Lee ) 한국물환경학회 2018 한국물환경학회지 Vol.34 No.2
This study aims to determine the pollution levels of nine kinds of heavy metals (As, Cd, Cu, Cr, Hg, Mn, Ni, Pb, and Zn) in Lake Shihwa, which is susceptible to the inflow of pollutants, and the levels of heavy metal exposure in its fish and shellfish. Shihwa Lake`s water quality did not exceed the short-term standard for protection of marine ecosystems, but concentrations of As, Cu, Cr, Hg, Ni, and Zn exceeded the long-term standard for protection of a marine ecosystem. In comparison to findings in prior research, performed in 2010, levels of Cr, Ni, As, and Zn are now 4.1 times lower. However, when compared to Saemangeum Lake, the environment is similar to that of Lake Shihwa, Cu, Ni, Hg, Mn, and Zn were 244.4 times higher. The levels of Pb, Cd, and Hg in fish’s muscles did not exceed the average values set by the marine safety standard. However, when compared to the fish from the Korean coast, the levels of heavy metals were 9.7 times higher, on average. The levels of heavy metals in fish`s livers were on average 26.8 times higher than in the muscles. In the case of shellfish, the levels of Pb, Cd, and Hg did not exceed the standard values, but in comparison to the shellfish from the south coast, the levels of heavy metals were 6.2 times higher on average. In particular, Mn (153.5 times higher) from fish and Cd (14.7 times higher) from shellfish were found in high amounts, indicating a concerning level of these specific heavy metals.