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민지홍 ( Ji Hong Min ),한갑수 ( Gab Soo Han ) 한국환경생태학회 2010 한국환경생태학회지 Vol.24 No.1
본 연구의 목적은 오대산국립공원 내 도로를 대상으로 2003년에서 2007년까지 로드킬 현황을 조사하고 종별 발생특성, 월별 발생분포, 토지이용 현황별 로드킬 특성을 분석하여, 로드킬 저감을 위한 기초자료를 제시하는 것이었다. 로드킬은 총 427건이 발생하였으며, 대부분 소형포유류인 것으로 나타났다. 포유류와 파충류에서는 다람쥐와 누룩뱀, 조류는 노랑턱멧새의 발생빈도가 높았다. 포유류와 파충류는 여름철과 가을철, 조류는 봄부터 여름사이의 발생빈도가 높게 나타났으며, 로드킬은 야생동물의 활동시기 및 번식시기 그리고 차량 이동량 증가와 밀접한 관련이 있는 것으로 나타났다. 야생동물 로드킬 빈도는 도로변 토지이용형태에 의해 영향을 받는 것으로 나타났으며, 도로 양측이 밭인 경우에 가장 높았다. The purpose of this study is to provide a database for the reduction of road-kills in the Odaesan National Park. To accomplish this task, investigations were conducted on the road-kills that occurred in the period from 2003 to 2007. The results of investigations are as follows: 427 road-kill cases were reported during the period, and the road-kill victims turned out to be mostly small mammals. Among mammals and reptiles the road-kill occurrence rate of squirrels and garters was higher than that of other species, and in the case of birds, the road-kill occurrence rate of yellow-throated bunting was the highest. The road-kill accidents of mammals and reptiles took place more frequently during the summer and autumn, while those of birds during the spring and summer. The increase of road-kill occurrence rate was found to be related to the activity and breeding period of wild animals, as well as to the increase of vehicles. The occurrence rate of road-kills was also found to be influenced by the type of land use on the roadside. Furthermore, the occurrence rate increased significantly when the roads passed through dry fields.
유한 임펄스 응답 필터를 활용한 비침습식 심탄도 실시간 호흡 데이터 추정에 관한 기초 연구
민지홍(Ji-Hong Min),이재원(Jae-Won Lee),김경호(Kyung-Ho Kim) 대한전기학회 2019 전기학회논문지 Vol.68 No.7
Recently, the incidence of Obstructive Sleep Apnea has been on the rise due to rapid aging and increasing obesity caused by stress and alter eating habits. Sleep Apnea, which has become one of the most common disease in modern times, is concerned with serious diseases such as high blood pressure, diabetes and heart diseases. Also the noise from sleeping can also degrade others’ quality of life around them. In addition, the severity of respiratory diseases are also increasing each year by environmental pollution such as fine dust intensifies. Therefore, a system for measuring a person’s breathing condition periodically is required, and research is actively conducted. Typically, acceleration sensors or fiber sensors are strapped around the thorax, or devices are designed to measure breathing in a belt format, but users may complain of discomfort. In this study, we intend to use the piezo ceramic sensor, which was adopted to measure signs of activity in the radial artery and femoral artery, to measure data without restraint, and to estimate breathing data by applying digital filters.
선로이송 가설공법을 적용한 철도판형교 유도상화(III)
민지홍(ji-Hong Min),장준현(Jun-Hyun Jang),우용근(Jin-Yong Kim),김진용(Yong-Keun Woo) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
To install heavy structures in the railway bridges crane methods or launching methods using temporary structure have been applied. These methods are uneconomical because working yard is required temporary cut of rail system etc. In this study various construction methods has been developed which are suitable to the filed conditions. In the case of simple span structure like plate girder bridges the girder is loaded to troy system at the working yard and then transferred to the working place. To lift and lower the girder system a new transfer system was developed. Different methods each for simple span bridge girder and long span girder were developed and detailed work procedures were proposed. Using these methods the heavy structures can be installed with simple and safe work procedures and the construction cost and duration can be reduced.
능동제어 콘크리트 도상 복원공법(ACBR) 개발과정 및 적용사례
민지홍(Ji Hong Min),이방우(Bang Woo Lee),배석복(Seok Bok Bae),박용걸(Young Gul Park) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.5
본 연구는 철도노반 침하로 인한 콘크리트 도상의 복원을 위한 능동제어 콘크리트 도상 복원공법(ACBR)을 개발하고, 실대형실험, 기존선 시험부설, 고속철도 노반복원 선시공을 거처 고속철도 운행선상 복원공사를 실시하였다. 이러한 일련의 기술개발과정을 통하여 경부고속철도 선로에서 현재 최대 침하된 비교적 긴 60m 복선선로 침하구간에서 능동제어시스템으로 동시인상에 의한 복원작업을 수행할 수 있었다. 본 기술은 고속철도 300km/h 운행선로에서 열차서행 없이 100m 선로를 동시 인상하여 복원하는 기술을 개발에 관한 내용이며, 이는 궤도해체복원공정, 인상공정 및 충전공정 등을 동시에 진행하는 중복공정 기술 개발이 포함된다. In this study, the ACBR (Active Control Concrete Bed Restoration) methods were developed to restore concrete rail bed that was settled due to the rail bed ground settlements. To verify the usefulness of the methods, full-scale model test, pilot construction for existing rail lines, pre-construction for high-speed rail bed were performed and finally actual construction was performed to the in-use high-speed rail. Based on these technical achievements, the most critically settled locations at the existing 60m double track settled location can be successfully restored. This method can be applied 100m-long railway under the 300 km/h speed service line without any speed down. This method can be applied rail removal and restore construction, rail jack-up construction and injection construction.