• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.299-301
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• 2005

The urban transit system is operated by driverless and automatic.In driverless and automatic system, the system function is accomplished exactly to obtain the safety and reliability of system and the system is designed to minimize risk. In order to design the system, the functional analysis is performed. Recently functional analysis is performed by design toolwhich is used and verified by aerospace, military, etc. Generally, the design tool is used to perform functional analysis in urban transit system development project. The design toolassist the system engineer to analysis the function of system in basic design. Therefore, In this paper, it is performed the functional analysis to satisfy the system requirement of urban transit system and to confirm the operation of system using design tool.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 B
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• pp.1663-1665
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• 2005

The urban transit system is operated by driverless and automatic. In driverless and automatic system, the system function is accomplished exactly to obtain the safety and reliability of system and the system is designed to minimize risk. In order to design the system, the functional analysis is performed. Recently functional analysis is performed by design tool which is used and verified by aerospace, military, etc. Generally, the design tool is used to perform functional analysis in urban transit system development project. The design toolassist the system engineer to analysis the function of system in basic design. Therefore, in this paper, it is performed the functional analysis to satisfy the system requirement of urban transit system and to confirm the operation of system using design tool.

• 한국시뮬레이션학회논문지
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• 제23권2호
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• pp.35-46
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• 2014

본 연구는 워게임 모델에 표준전투편성 개념 및 기능을 적용한 최초 연구라고 할 수 있다. 먼저, 기존 워게임 전투편성 기능 연구를 통하여 기존 논문과 연구자료들에서 제시된 워게임 모델들의 전투편성 기능을 분석하였으며, 논리와 연관된 전투편성 기능이 적용된 지상군 자원소요 분석모델의 전투편성 입력절차와 세부 기능을 알아보았다. 둘째, 표준전투편성 기능 및 알고리즘을 개발하여 구현하였다. 개념을 정의하고 기존 전투편성 기능 분석을 통하여 도출된 주요 개발기능을 활용하여 사용자 인터페이스 설계 및 개발된 알고리즘을 구현하였다. 알고리즘은 절차 알고리즘, 표준전투편성 알고리즘, 오류체크 알고리즘으로 구분하여 개발했다. 셋째, 개발된 기능을 활용하여 사용자 입력소요시간과 편리성에 대하여 내용을 측정하여 통계분석을 실시했다. 결론적으로 본 연구는 표준전투편성 개념의 최초 적용 및 기능 구현을 통하여 입력소요시간 단축 및 사용자 편리성을 향상 시켰으며, 새로운 모델기능의 발전가능성을 제시했다는 점에서 큰 의미가 있다고 판단된다.

• 한국실내디자인학회논문집
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• 제23권6호
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• pp.78-86
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• 2014

Lighting in indoor space is being changed to system lighting converged with IT technology. Office space lighting with incandescent lamps and fluorescent lamps was completed through overall lighting plan by illumination in most cases, but convergence between LED lighting and IT technology enables the technology of responding to user requirements to be realized. Optical physical quantity suitable for humans and the lighting environment in accordance with user's sensibility, based on space function and user's behavior, would contribute to the improvement of service productivity, energy reduction, and enhancement of emotional satisfaction by providing user optimized lighting solution. Thus, user-customized system lighting guidelines to be applied with integration indicators of optics and sensibility are required. For the design elements required by users, environmental factors, product characteristics, optical characteristics, and sensibility factors are drawn from the design cases for office space and the survey, and the design check list and evaluation indicators are considered to reflect the requirements in the design and requirement indicators to give integrated satisfaction for optics and sensibility are developed. Purpose-centered design method from the user's viewpoint is applied to function-focused design through scenario, and it should be applied flexibly, as the new lightning design method solutions, to the concept design stage of space lighting design and device development. This paper, therefore, presents user-customized guidelines by pursuing the optics and sensibility evaluation and design method combining the requirement conditions and scenario, to be used for lighting content development and design.

• 한국정보통신학회논문지
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• 제17권9호
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• pp.2227-2232
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• 2013

유도제어 시스템 체계개발의 초기단계에는 운용 효과도 도출 및 요구사항 적합성 검토를 통한 체계 개략사양도출을 위해 효과도 분석을 수행한다. 본 논문의 목표는 M&S (Modeling & Simulation)를 활용한 운용 효과도 분석을 통해 고속 무인 수중운동체의 목표점 도달 임무를 위한 체계 요구사항 도출이다. 운용 효과도는 대상 수중운동체의 목표점 도달 정확도로 정의한다. 도달 정확도에 가장 큰 영향을 미칠 것으로 예상되는 변수는 항법센서 성능이다. 본 논문에서는 관성항법센서(Inertial Navigation Sensor, INS)와 도플러 속도 측정 장치(Doppler Velocity Log, DVL)를 이용한 복합항법을 고려하였다. 몬테카를로 수치 시뮬레이션을 통해 항법센서 성능에 대한 효과도 분석을 수행한다. 몬테카를로 수치 시뮬레이션 결과는 CEP(Circular Error Probability)와 분산을 이용한 확률분석을 통해 분석한다. 상용 항법센서 가격을 고려하여 최적의 가격대 성능비를 갖는 항법센서 성능을 제시한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.649-652
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• 2005

The camera cellular phone has a large portion of cellular phone market in recent year. The variety of a customer demand makes a fast model change and the spatial resolution is changed from VGA to multi-mega pixel. The 1.3 mega pixel (MP) camera cellular phone was first released into the Korean market in October 2003. The major cellular phone companies released a 2MP camera cellular phone that supports zoom function and a 2MP camera cellular phone is settled down with the Korea cellular phone market. It makes a keen competition in price and demands automation for phone camera module. There is an increasing requirement for the automatic assembly to correspond to a fast model change. The hard automation techniques that rely on dedicated manufacturing system are too inflexible to meet this requirement. Therefore in this study, this system is designed with the flexibility concept in order to cope with phone camera module change. The system has a same platform that has X-Y-Z motion or X-Z motion with ${\mu}m$order accuracy. It has a special gripper according to the type of a component to be put together. If the camera model changes, the gripper may be updated to fit for the camera module. The controller of this system acquires the data sets that have the information about the assembly part by the tray. This information is obtained ahead of an inspection step. The controller excludes an inferior part to be assembled by using this information to diminish the inferior goods. The assembly jig used in this system has a function of self adjustment that reduces the tact time and also diminish the inferior goods. Finally, the intelligent assembly system for phone camera module will be designed to get a flexibility to meet model change and a high productivity with a high reliability.

• 한국정보통신학회논문지
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• 제13권2호
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• pp.382-389
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• 2009

이동 단말기의 사용이 일반화되면서 최근 WiMAX 기술의 다양한 서비스 요구가 점점 증가하여 보안의 중요성이 점점대두되고 있다. 이러한 보안 요구사항을 충족시키기 위해서 WiMAX에 전통적인 1 홉 네트워크 보안기법이 적용되더라도 이동 WiMAX에서는 이웃 링크 설립과정과 TEK 교환 과정사이에 비연결적으로 동작이 이루어져서 악의적이 공격에 쉽게 공격당할 수 있는 문제점을 가지고 있다. 이 논문에서는 이동 WiMAX의 보안 요구사항을 충족하기 위해 IEEE 802.16e 표준에서 제공하는 기본 기능이외에 WiMAX의 이웃 링크 설립 과정과 TEK 교환 과정 사이를 안전하게 연결하는 보안 연계 메커니즘을 제안한다. 제안 메카니즘에서는 SS와 BS가 생성한 임의의 난수와 비밀값을 이웃 링크 설립과 TEK 교환 과정의 암호학적 연결을 통해 TEK 요청에서 발생할 수 있는 man-in-the-middle 공격과 같은 내부 공격을 예방할 수 있다.

• 한국전산구조공학회논문집
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• 제22권2호
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• pp.181-187
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• 2009

내진 설계기준이 도입된 이후, 신설교량에 대한 내진 설계의 시행은 물론 기존교량의 내진 성능 검토에 의한 내진 성능 확보가 요구되고 있다. 기존교량의 내진 성능 확보 또한 내진 설계의 기본개념에 따라 붕괴방지수준을 만족하여야 하며, 확보방안으로는 교량의 중요도와 형식에 따라 보강규모가 다른 여러 가지 방안이 제시되어야 한다. 현재 일반교량의 경우 받침의 교체, 교각의 보강 및 전단키 설치 등의 보강방안이 내진 성능 향상 및 확보 방안으로 가장 많이 연구, 적용되고 있는 상황이다. 이 연구에서는 내진 설계가 수행되지 않은 일반적인 기존 교량은 해석대상교량으로 선정하고, 붕괴방지 수준을 만족하기 위해 연성파괴메카니즘을 확보하도록 기존교량의 설계변경을 수행하고 내진 성능을 검토하였다. 기존교량의 경우, 하부구조 교각기둥의 설계단면 결정 및 상/하부구조 연결부 받침의 기능변경 등 교량시스템의 재 설계에 의해 내진 성능을 확보할 수 있다는 것을 제시하였다.

• 한국건축시공학회지
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• 제1권2호
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• pp.154-164
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• 2001

This research is aiming to specify the requirement of the investment such as intial cost, running cost earning rate to make effective investment considering the purpose of remodeling and economical value of store building enough to meet the initial purpose of remodeling. The review of earning for economical evaluation was performed by the on-site auditing on the structure and function of the building and applying the assessment simulation program, which is to find the possible business model to identify the requirement of building owner through case study. After the research, the following results are obtained. First, it is important that many aspects should be carefully analysis and the best method should be selected as characteristics of remodeling can be defer each other in their implementations. Second, though the remodeling of exist building to promote the functions has been applied, no suitable assessment tool has bee developed for deciding the level of remodeling in the view of economical efficiency so far. Third, the economical benefit was evaluated by analysing annual earning rate which is applied by investment items and recovery period for the investment. More specific date base should be established to apply the suggested economic acessments in business enough ti forecast the future circumstances. More researches should be promoted on the area continuously as well as the integrated economic evaluation of remodeling on existing building.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2002년도 학술.기술논문발표회
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• pp.103-109
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• 2002

This research is aiming to specify the requirement of the investment such as initial cost, running cost earning rate to make effective investment considering the purpose of remodeling and economical value of store building enough to meet the initial purpose of remodeling. The review of earning rate for economical evaluation was performed by the on-site auditing on the structure and function of the building and applying the assessment simulation program, which is to find the possible business model to identify the requirement of building owner through case study. After the research, the following results are obtained. First, it is important that many aspects should be carefully analysis and the best method should be selected as characteristics of remodeling can be defer each other in their implementations. Second, though the remodeling of exist buildings to promote the functions has been applied. no suitable assessment tool has bee developed for deciding the level of remodeling in the view of economical efficiency so far. Third, the economical benefit was evaluated by analysing annual earning rate which is applied by investment items and recovery period for the investment. More specific data bate should be established to apply the suggested economic accession in business enough to forecast the future circumstances. More researches should be promoted on this area continuously as well as the integrated economic evaluation of remodeling on existing building.