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- 저자 : 이남진(Nam Jin Lee) (검색결과 75 건)
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공공공사의 설계오류 방지를 위한 실시설계도서 검토서 개발
이남진,손명진,김지훈,지성민,현창택,Lee, Nam-Jin,Son, Myung-Jin,Kim, Ji-Hoon,Ji, Soung-Min,Hyun, Chang-Taek 대한건축학회 2011 대한건축학회논문집 Vol.27 No.2
The drawing and specifications for realizing an architectural design require care so that no data would be missed and so that equality can be maintained between the design and specifications or material bills. Still, drawing and specification errors occur for various reasons, including incomplete discussion between the designers of each section, the designer's lack of construction experience, and insufficient review of the interface by each work section. These design errors are the main reasons for the need to redesign at the construction stage and raise problems for various participants in the construction project. Despite the foregoing, the detailed tool for reviewing the design, specifications, and material bills before the construction stage is insufficient, and even the design checklists from large design companies lacks details for proper utilization. Thus, this study was conducted to develop a drawing and specification checklist to prevent design errors in public construction projects and to provide peer review of the design, specifications, material bills, and screen design errors in the finished work for building construction projects with frequent mistakes.
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이남진,정애자,황익근,Lee, Nam-Jin,Jung, Ae-Ja,Hwang, Ik-Keun 한국정신신체의학회 1999 정신신체의학 Vol.7 No.1
감정표현불능증은 감정과 공상을 언어적으로 표현하는 능력의 어려움을 특징으로 하는 정신기능의 특정 장애를 의미한다. 이는 초기에 정신신체질환에서 언급되었음에도 불구하고 감정표현불능증적 특성은 내과적 그리고 정신과적장애를 가진 환자들에게서 폭 넓게 관찰되고 있다. 본 연구는 Scored Archetypal 9 Test(SAT9)파 한국판 토론토 감정표현불능증 척도-20(TAS-20K)를 사용하여 알코올리즘 환자들에서의 감정표현불능증적 특성을 조사하기 위해 계획되었다. 20명의 알코올리즘 환자들과 24명의 정상대조군이 본 연구를 수행하였다. 결과는 다음과 같다. 1) SAT9과 TAS-20K에서 알코올리즘 환자군은 정상대조군에 비하여 좀 더 alexithymic하였다. 2) 두 군간 성별사이의 감정표현불능증 척도는 통계학적으로 유의한 차이가 없었다. 3) 두 군간 나이나 교육정도와 감정표현불능증 척도사이에는 통계학적으로 유의한 상관은 없었다. 4) SAT9과 TAS-20K은 환자군에서 통계학적으로 유의한 상관을 보여주었다. Alexithymia refers to a specific disturbance in psychic functioning characterized by difficulties in the capacity to verbalize affect and to elabolate fantasies. Although it was initially described in the context of psychosomatic illness, alexithymic charateristics may be observed in patients with a wide range of medical and psychiatric disorders. This study was designed to investigate alexithymic characteristics in the patients with alcoholism using Scored Archetypal 9 Test(SAT9) and Toronto Alexithymia Scale-20 Korea version(TAS-20K). Twenty patients with alcoholism and twenty-four normal controls completed these tests. The results were as follows. 1) Patient group with alcoholism were significantly more alexithymic than normal control group in both SAT9 and TAS-20K. 2) No significant difference in the alexithymic measures was found between genders of both group. 3) No significant correlation was found between alexithymic measures and age or education level in both group. 4) Measures between SAT9 and TAS-20K showed significant correlation in the patient group.
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도시형자기부상차량의 반능동 조향장치에 대한 연구 (Study for Semi-Steering system for Urban Maglev)
이남진(Nam-Jin Lee),강광호(Kwang-Ho Kang),이원상(Won-Sang Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
Urban maglev should have such characteristics as not only environmentally friendliness and excellent driving capability but also curve negotiation performance because its routes have many sharp curves. Due to normal mechanism of urban maglev its relative displacements of secondary spring are bigger than conventional railway vehicle and the centering force of levitation magnet is smaller than wheel-on-rail system. These features of maglev affect the curving negotiation and so the additional steering device is to be required on Urban maglev to improve the running performance at sharp curve of less than about R50m. Some developed urban maglev had the passive steering device which consists of mechanical linkage or hydraulic cylinder and closed-route piping. But it has drawback as complexity of layout of understructure of vehicle and functional limitation of passive mechanism regarding transient curve. These demerits could be solved by using active steering system. But it has a weak point that an active device should have actuators and additional inverter or hydraulic power source. In this paper, the semi-active steering system for urban maglev is to be introduced.
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이남진(Nam-Jin Lee),강광호(Kwang-Ho Kang),이원상(Won-Sang Lee),강철구(Chul-Goo Kang) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.5
노면에 궤도를 부설하여 운행하는 트램 차량은 고비용 에너지 시대에 도심 교통의 대안으로 재조명받고 있다. 하지만, 기술적 측면에서 볼때 승객의 편의성을 고려해 객실상면 높이를 350mm 수준으로 낮춘 100% 저상트램과 트램용 대차는 전통적인 윤축 대차와 전혀 다른 형태의 대차 형식를 요구하고 있다. 이러한 기술적 요구로 개발 대차는 독립차륜과 인보드형식을 채택하였으며, 직교형 구동기어 및 추진 모터를 대차 측면에 배치하였다. 기초제동장치는 유압제동시스템을 활용하고, 추가로 트랙브레이크를 적용하여 비상 제동성능을 달성 할 수 있도록 하였다. 대차 설계의 주안점을 승차감, 주행안정성, 유지보수성에 두었으며, 현재 시제 대차를 제작, 관련 성능 검증을 진행하고 있다. 본 보고서에서는 그 설계 및 제작 과정을 소개하고자 한다. Nowadays the tramway vehicles running on streets are considered as solutions of urban transportation system on energy high-cost period. It is requested that the tram vehicle should have 100% low-floor as about 350mm for convenience of passengers. And in the view running mechanism bogie for low-floor tram is quite different from conventional bogie with rigid wheelsets. The design concept for new bogie system is focused on good ride quality, running safety and maintainability. To meet the requirement of 100% low-floor the bogie is equipped with independently rotating wheels and portal axles, and bevel gearboxs with totally enclosed traction motors are placed at both side of bogie. For safety of tram and insufficient space on bogie hydraulic brake cylinder and track brake are applied. Its design was done and proto-type was manufactured according to international standard and its validation and verification test is in progress. In this report the process of design and manufacture will be introduced.
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활주방지장치 HILS 시스템을 위한 차륜 궤도 접촉 모델 연구
이남진(Nam-Jin Lee),강철구(Chul-Goo Kang),이원상(Won-Sang Lee) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.11
철도차량의 활주방지장치는 철도차량의 안전성에 직접적인 관련이 있는 장치로서, 개발 및 검증 과정에서 다양한 환경에 대한 차량 시험이 뒷받침되어야 한다. 하지만, 대상체인 철도차량의 특성상 검증되지 않은 개발단계의 핵심부품의 차량시험은 비용적인 측면과 시험의 위험성으로 제한적이며, 그에 대한 보완책으로 철도차량 활주방지시스템의 HILS 시스템이 제안되고 있다. 활주방지장치 HILS에서의 활주현상을 위해 정확한 차륜 궤도 접촉모델이 필수적이며, 이 모델은 궤도의 접촉형상, 표면오염, 운행속도 등의 변수를 인자로 사용한다. 본 연구에서는 활주방지장치 HILS시스템 구현을 위해 철도차량의 동역학 모델과 궤도 오염조건 및 차량의 상태에 따른 차륜 궤도간 점착 특성을 반영할 수 있는 접촉 모델을 구현하여, 주행 시나리오에 따라 차량 활주 현상을 실시간 시뮬레이션으로 운행하여, 작성한 차량 및 차륜 궤도 접촉 모델의 적합성을 검증하고자 한다. WSP(wheel slide protection) system shall be verified through lots of test results of railway vehicle on field at various running environment because WSP system is essential component for vehicle safety. But a new component or new developed subsystem is not easy to be tested on the real field test of railway vehicle in the view of risk management and test cost, particularly for components for brake system. And therefore HILS(hardware-in-loop simulation) of WSP with vehicle dynamic is considered as the solution. A railway vehicle in HILS is to be realized as real-time simulation and the wheel rail contact model shall be included on vehicle model, which can generate creep force similar to actual force. To make accurate contact forces the contact model shall represent the effects of a size of contact patch, contamination of contact surface and running speed, as input parameters. On this study the contact model for HILS for WSP system is to be realized as real-time vehicle simulation, which can represent phenomena of sliding at braking on contaminated rail. Then predefined running scenario will be simulated and the results are to be reviewed for validation of contact model.
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이남진(Nam-Jin Lee),강철구(Chul-Goo Kang),이원상(Won-Sang Lee) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.5
철제 차륜과 레일을 이용하는 철도차량은 차륜 레일간의 접촉력을 이용해 추진력과 제동력을 생성한다. 차량의 제동시스템은 일반적으로 제동 디스크/패드, 제동실린더, 공압제동작용장치, 답면 제동장치 등으로 구성되며, 이것으로 차륜 레일간의 접촉력을 생성하여 차량 제동 요구 성능을 달성한다. 이때 작용한 제동력이 차륜 레일의 한계력 이상의 힘이 작용하면 차륜은 레일 면에 대해 슬립이 발생하며, 제동 시뮬레이션을 구현하는 차량 모델은 이러한 접촉 현상을 구현하여야 한다. 본 논문에서는 대차를 포함한 차량 차륜의 접촉력 모델 및 공압 제동장치 및 제동제어기를 포함한 차량모델을 구현하여, 제동 시뮬레이션을 통해 구현된 모델을 검증한다. Railway vehicle runs with steel wheels on rail. External force of vehicle such as braking & traction forces are generated through mainly contact between wheels and rail. Brake system of vehicle controls a contact force to achieve required braking performance of vehicle with pneumatic brake devices such as brake disc and pad, braking operating unit, and tread brake unit. In case the applied brake force exceeds the limits of adhesion, slip or slid appears on contact surface between wheel and rail. The contact force and the limited adhesion force are influenced by vehicle speed, environment condition and surface conditions of wheel and rail. The vehicle model for brake performance simulation shall include characteristics of contact force and vehicle e and its limits of wheel and rail. In this paper, the simulation model for contact force and simple vehicle will be realized and will be validate through simulation of wheel slide phenomena.
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LQ제어 기법을 활용한 자기부상열차 부상제어기 설계에 관한 연구
이남진(Lee Nam-Jin),한형석(Han Hyungsuk),양방섭(Yang Bang-Sup),김철근(Kim Chul-Geun) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
The levitation system of Maglev is composed with electro-magnet, power supplier, controller and sensor. The complex interactions between above subcomponents define the characteristics of electromagnetic suspension of the vehicle. In this study, to understand the influence of controller on the running performance of Maglev, the new controller based on LQ theory will be designed and be simulated with simplified vehicle model. Then the influence of controller on the characteristics of electromagnetic suspension will be reviewed through comparison with existing control algorithm of our prototype vehicle.
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