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도심화된 까치(Pica sericea ) 서식지에 따른 야생조류의 도시림 필요성 분석
유아름(A Reum Yoo),우혁진(Hyeok Jin Woo),김진아(Jin A Kim),정훈(Hoon Chung) 반려동물연구학회 2021 Animalia Vol.3 No.1
본 연구는 도심화가 진행된 까치(Pica sericea )의 서식지에 따른 도시림의 필요성 분석을 목적으로 수행되었다. 서울창포원, 양지근린공원, 별내 외곽, 노해근린공원, 삼육대학교, 중계 은행사거리, 총 6곳을 조사 지역으로 선정하여, 까치의 도심화를 알아보기 위한 실험 및 까치의 개체수 조사가 진행되었다. 도심과 도심 외곽에서 실시된 비간섭거리 비교 실험을 통해 까치의 도심화가 이루어졌음이 증명되었고, 개체수 조사 결과, 대부분의 까치가 도시림 또는 도시림 근처에서 발견되었다. 본 연구 결과, 도시생태계를 야생조류의 서식지 제공에 있어 도시림이 중요한 역할을 수행하고 있음이 확인되었고, 따라서 앞으로의 도시림 확보가 더욱 필요할 것으로 판단된다. This study was conducted for the purpose of analyzing the necessity of urban forests according to the habitat of magpies (Pica sericea ) where urbanization has progressed. A total of six locations, including Seoul Changpowon, Yangji Neighborhood Park, Byeolnae Outer, Nohae Neighborhood Park, Samyook University, Junggye Bank Intersection, were selected as survey areas, and an experiment and a population survey of magpies were conducted to find out the urbanization of magpies. Non-interference distance comparison experiments conducted in the city center and outside the city proved that the urbanization of magpies was achieved, and as a result of the population survey, most magpies were found near urban forests or urban forests. As a result of this study, it was confirmed that urban forests play an important role in providing habitats for wild birds in the urban ecosystem, so it is necessary to secure more urban forests in the future.
국가별 좌석 안전성 평가 방법에 따른 머리지지대 최적화 설계
유혁진,임종현,윤일성,Yoo, Hyukjin,Yim, Jonghyun,Yoon, Ilsung 한국자동차안전학회 2013 자동차안전학회지 Vol.5 No.2
The whiplash Injuries due to rear collision occur frequently. As result, in many countries, seat performance is being assessed and developed to improve head whiplash injury in rear collision of passenger car. This study compares whiplash assessment methods in each country. Using the DFSS(Design for Six Sigma) method, the correlation between influence parameters of head restraints and whiplash injury criteria is analyzed. Four control factors are used in this study. And total 11 whiplash injury criteria from NCAP(New Car Assessment Program) of Korea, Europe, China and IIHS(Insurance Institute for Highway Safety) of USA are used for output response. By the experimental design, L9 orthogonal coordinate system is configured and is tested by sled test equipment, twice. By using average assay value and ANOVA, the correlation between control factors and injury criteria has been comprehended. Optimization design of head restraint according the regional seat safety assessment was derived through the correlation.
DFSS 기법을 이용한 후방 추돌 시 경부 상해 감소를 위한 머리지지대 인자의 영향성 연구
오형준,서상진,유혁진,Oh, Hyungjoon,Seo, Sangjin,Yoo, Hyukjin 한국자동차안전학회 2012 자동차안전학회지 Vol.4 No.2
Whiplash is the most frequent injury among occupants in low speed rear-end car collision. The aim of this paper is to analyze thecorrelation between influence parameters of head restraints and whiplash injury criteria.In this paper, DFSS (Design for Six Sigma) method is used for optimum design of head restrains. Four control factors of head restraints have selected by function matrix method. The effects of the control factors have been experimentally evaluated by using a sled pulse from 16km/h relative velocity which is suggested by KNCAP (Korean New Car Assessment Program). In order to reduce the noise factors of dynamic tests, whiplash tests were repeated twice. By using DFSS, the correlation between control factors and injury criteria has been comprehended.
후방 추돌 시 머리지지대 위치에 따른 능동형 머리지지대 성능의 시험적 고찰
오형준(Hyungjoon Oh),유혁진(Hyukjin Yoo),김승기(Seungki Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Whiplash injuries are minor injury among occupants in low rear-end collision. However, rear-end collision has been caused social problem as occupant injury and premiums in connection with whiplash injuries. So, in order to solve this problem, many manufactures have been studying to make effective seat and head restraints to protect neck from whiplash injuries. An active head rest in the event of a rear collision It moves forward to close the gap between head of occupants and the head rest to prevent whiplash. In this paper, we conducted KNCAP dynamic assessment test to compare efficiency of active head restraints by changing backset dimension. As a result, we could find out difference between active head restraints and in-active head restraints on backset dimension.