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이광렬,현재혁,Lee, Kwang-Lyeol,Hyun, Jae-Hyuk 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.3
The study examined the level of heavy metal contamination by dividing military rifle shooting ranges into the three areas, i.e firing, trajectory, and target. The target area was found to be contaminated at a level higher (Cu 845 mg/kg, Pb 30,487 mg/kg) than the Worrisome Level of Soil Contamination (hereinafter referred to as the “Worrisome Level”) The trajectory area was predicted to be free from contamination, but it did indicate contamination although it was pretty much lower (Cu 23 mg/kg, Pb 99 mg/kg) than Worrisome Level. This is attributed to the contamination spread when rearranging the soil of the target area during the maintenance of the shooting range. The firing area was also predicted to be free from heavy metal contamination, but the results analyzed indicated a contamination higher (Cu 201 mg/kg, Pb 2,286 mg/kg) than Worrisome Level. This is attributed to the fragments of the broken bullet scattering due to the pressure generated as the bullet leaves the muzzle. An examination of heavy metal contamination in the discharge area as well as gutters to prevent the intrusion of rain water from perimeter revealed a high level of contamination (Cu 298 mg/kg, Pb 6,497 mg/kg), which makes it necessary to take measures.
시뮬레이션을 통한 항공화물 네트워크 수익관리 모형 성능 평가
이광렬,윤수정,이철웅,Lee, Kwang-Ryul,Yoon, Soo-Jeong,Lee, Chul-Ung 한국시뮬레이션학회 2009 한국시뮬레이션학회 논문지 Vol.18 No.1
A discrete event simulation model is developed to evaluate the performances of three different revenue management methods for an air cargo network from Northeast China to North America and Europe. In the first method, a bid price model is applied only to the routes that pass through Incheon. In the second method, the bid price model is applied to all the routes. In third method, bid price and virtual nesting models are applied to the routes that pass through Incheon. The results show that the total revenue significantly increases with the employment of pricing and capacity control. The developed simulation model is a useful research tool to study marketing strategies for air cargo operations.
비정질 합금의 중주기배열구조 및 이 구조가 소성에 미치는 역할: 분자동력학적 연구
이창면 ( Chang Myeon Lee ),이미림 ( Mi Rim Lee ),이광렬 ( Kwang Ryeol Lee ),강경한 ( Kyung Han Kang ),이병주 ( Byeong Joo Lee ),이재철 ( Jae Chul Lee ) 대한금속·재료학회 2010 대한금속·재료학회지 Vol.48 No.2
The local structural states of amorphous alloys have been depicted previously via short-range orders (SROs). However, the concept of SROs alone is inadequate and sometimes insufficient to explain the structure-property relation of the amorphous alloys. In this study, we propose new types of medium-range building structures that affect the mechanical properties, plasticity in particular. Using a combination of molecular dynamics simulations and the Voronoi tessellation method, we demonstrate a three-dimensional configuration of icosahedral medium-range orders (I-MROs) and elucidate how these icosahedral orders evolve by the application of shear deformation. It was observed that the structural stability of the icosahedral orders relies largely on how they are linked via percolation and this linking is explained in detail.
열소성변형을 이용한 주철제 실린더 라이너 재생방법에 대한 연구
이광렬(Kwangryeol lee),김종호(Jongho Kim),김영식(Youngsik kim) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.4
The cast iron cylinder liner of the marine engine must be scrapped after its inner surface was definitely worn out due to the friction between the surface and piston ring during the operating. In this research, the restoring method of the worn out cast iron cylinder liner are discussed based on the results of experimental work of the thermal plastic deformation technique.
Nimonic 80A 내열재료의 오버레이 용접부의 균열발생과 대책
이광렬(Kwang-Ryeol Lee),강명신(Myung-shin Kang),최영국(Young-kuk Choi),김영식(Young-sik Kim) 한국마린엔지니어링학회 2003 한국마린엔지니어링학회 학술대회 논문집 Vol.2003 No.-
The Nimonic 80A exhaust. suction valve of the marine engine must be occurred worn out and corrosion during the operating. Generally over the limited valve is restored by overlay welding. In this research, cracking generation and work out a countermeasure in overlay welding of Nimonic 80A
[학술강연] 용사법에 의한 주철제 실린더 라이너의 보수재생방법의 개발
이광렬(Kwangryeol Lee),최영국(Youngkook Choi),김영식(Youngsik Kim) 한국마린엔지니어링학회 2002 한국마린엔지니어링학회 학술대회 논문집 Vol.2002 No.-
A experimental try was conducted for the purpose of establishment of the cast iron modification by the metal spray method. The friction and wear resistance properties of the metal sprayed cast iron surface were evaluated. The application experiment for the cast iron modification by the metal spray method was conducted in order to develope the restoring method of the scrapped cast iron cylinder liner of the marine engine.
이광렬 ( Kwang Lyul Lee ),김찬선 ( Chan Sun Kim ) 한국시큐리티융합경영학회 2013 한국융합과학회지 Vol.2 No.2
Purpose: This study is aimed for provision of plan for building safety nets for discharged soldiers appearing as a result of national defense outsourcing. Currently, Republic of Korea runs national defense outsourcing in order to make cuts on defense budgets and maximize efficiency of military affairs. However, the safety nets making the most of discharged soldiers and system relative to re-socialization of jobs are yet to be prepared. Therefore, this study, based on precedented studies of Military, Sociology, Guard and Escort, and Civil Military Corporation, conducted an extensive literature study. Excavation of military related industries such as civil military corporations and guard and industry and support of engagement in duties requiring professional technology such as house management affairs thereafter will lead to the provision of social safety nets for discharged soldiers. Conclusions are as follows. Firstly, systematic supporting education for powering discharged soldiers through national defense outsourcing is a necessity. Secondly, social safety nets for discharged soldiers ought to be implemented lawfully and institutionally. Thirdly, persistent endeavor of Ministry of National Defense for reciprocally cooperating relationship between discharged soldiers and civil corporations through the achievement of systematic education support for discharged soldiers is necessary.
Nimonic 80A제 흡·배기 밸브의 오버레이층 특성에 관한 연구
이광렬(Kwang-Ryeol Lee),강명신(Myung-shin Kang),김영식(Young-Sik Kim) 한국마린엔지니어링학회 2003 한국마린엔지니어링학회 학술대회 논문집 Vol.2003 No.-
The Nimonic 80A exhaust. suction valves of the marine engine are worn out and corrosive during the engine operation. The worn out valves can be restored by the overlay welding process. In this study, the prevention of the crack in the base metal and the execution did PT A welding to get superior welding part of the Nimonic 80A and the properties was evaluated.