• 제목/요약/키워드: Microcomputer

검색결과 417건 처리시간 0.027초

3차원 대기오염 모형에 그리드 컴퓨팅 기술 적응 (Grid Computing Application to a three dimensional comprehensive air pollution model)

  • 조석연;조금원
    • 한국대기환경학회:학술대회논문집
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    • 한국대기환경학회 2002년도 추계학술대회 논문집
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    • pp.101-102
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    • 2002
  • 과거 50여년간 전산기는 성능과 효율면에서 획기적인 발전을 거듭하여 왔다. 더욱이 최근 20여년간 microcomputer와 PC 분야의 발전으로 저렴한 가격으로 전산자원을 활용할 수 있게 되었다. 그러나, 1개의 CPU로 도달할 수 있는 속도의 한계에 근접함에 따라서, CPU 성능의 향상 속도가 느려지고 있다. 현재 초고성능 전산기로도 많은 시간과 비용이 소요되는 문제가 과학 및 공학 분야에 아직 많이 있는 상황에서 이러한 전산속도 발전의 둔화는 심각한 문제가 되고 있다. (중략)

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A control of wound-rotor induction generator for random wave input generation system

  • Kim, Moon-Hwan
    • Journal of information and communication convergence engineering
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    • 제5권3호
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    • pp.223-228
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    • 2007
  • This paper deals with the secondary excited induction generator applied to random wave input generation system. As it is preferred to stabilize the output voltage and frequency in the constant level, microcomputer controlled CSI connected to the secondary windings supplies the secondary current with slip frequency. For testing this method, the input torque simulator is constructed, according to the power flow analysis. The experimental and numerical results show the advantage of secondary excited induction generator system for the random input wave generation system.

칼만필터링을 사용한 목표물 추적시스템의 설계 (Design of Target Tracking System using Kalman Filtering)

  • 김종화;이만형
    • 대한전기학회논문지
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    • 제37권9호
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    • pp.636-645
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    • 1988
  • A new filter algorithm is suggested improving structurally the conventional extended Kalman filter of which the performance is dependent on the selection of the reference axes, by use of line-of-sight axes and gain rotation technique. The implementation method using microcomputer which implements tracking Kalman filter is introduced in terms of hardware and software. Then, through the simulation the performance of suggested filter is compared with that of conventional extended Kalman filter and the possibility of the real time tracking of moving target is investigated.

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경험적 규칙을 이용한 자동 동조 PID제어기 (Auto-Tuning PID Controller using Some Heuristic Rules)

  • 이창구;김성중;황형수
    • 대한전기학회논문지
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    • 제39권5호
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    • pp.485-493
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    • 1990
  • The idea of expert control is to incorporate a rule based expert system in a feedback control system. In this paper, we present some heuristic rules based on relay experiment for the choice of controller structure and the setting of the controller parameters. Heuristic rules are used as an element of the feedback loop in an auto-tuning PID controller. The algorithms are coded in a form which is as pure as possible and the heuristic logic is implemented with the rules. This paper reports an implementation of an expert controller on microcomputer-based system, including an industrial programmable controller.

대기오염(大氣汚染) 감시(監視) 및 예측(豫測) 시스템 개발 (Development of an Air Pollution Monitoring and Forecasting System)

  • 장동일;이태원;홍욱희;홍윤
    • Journal of Biosystems Engineering
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    • 제17권2호
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    • pp.177-191
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    • 1992
  • The MAFSAP(Monitoring and Forecasting System of Air Pollution) was developed to measure the weather and air pollution data automatically, then make them input to microcomputer and analyze them for monitoring and forecasting air pollution at all times. And the air pollution telemetering systems installed at Young-Dong Thermal Power Plant was analyzed and an ideal telemetering system utilizing MAFSAP was suggested.

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Plasmid의 제한효소 지도 작성을 위한 콤퓨터 프로그램 (Rapid plasmid mapping computer program)

  • 이동훈;김영준;이승택;강현삼
    • 미생물학회지
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    • 제24권1호
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    • pp.12-17
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    • 1986
  • A new computer algorithm is described to order the restriction fragments of plasmid DNA which has been cleaved with several restriction endonucleases in single or double digestions rapidly with realistic error rates. The permutation and high weight on small fragments methods construct all logical circular map solutions. The program is written in Apple BASIC and run on an Apple II plus microcomputer with 64K memory. Several examples are presented which indicate the high efficiency of the profram in construction possible restriction map for YEp24.

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PC 이용과 놀이성(playfulness)의 관계에 대한 연구 (A Study on the Relationship between PC Use and Playfulness)

  • 백상용
    • Asia pacific journal of information systems
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    • 제10권4호
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    • pp.101-113
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    • 2000
  • This study deals with the concept of Microcomputer Playfulness(MCP), Even though MCP was introduced recently in the MIS research, the concept is expected and empirically supported to be significant in explaining information technology adoption and usage. Based on the Technology Acceptance Model(TAM), this study presented a revised model to explain individual PC use and explored the role of MCP in PC use. The results showed that MCP has a direct influence on PC use rather than a mediator between Self-efficacy and PC use, and that MCP is a better predictor of PC use than Computer Anxiety.

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경영정보 시스템에서 소프트웨어의 무단복제에 관한 비교연구 - MIS 교수와 경영자를 중심으로 - (A Comparative Study of Unauthorized Software Copying: Information Systems Faculty Members' VS. Practicing Managers' Perceptions)

  • 심정필
    • Asia pacific journal of information systems
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    • 제1권1호
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    • pp.17-29
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    • 1991
  • The topic of microcoputer sofrware ethics in the field of information systems (IS) has gained an increasing amount of attention from IS researchers and practicing managers. This paper compares the attitudes of IS faculty members with those of IS managers toward microcomputer software pirating. This study also examines professional related ethical attitudes in detail.

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마이크로 컴퓨터 계측(計測)및 제어(制御) 시스템을 활용(活用)한 식품건조중(食品乾燥中) 자료(資料)의 수집(收集)과 제어(制御) (Data Acquisition and Control of Food Dehydration Process with Microcomputer System)

  • 최부돌;전재근
    • 한국식품과학회지
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    • 제19권3호
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    • pp.200-205
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    • 1987
  • 마이크로 컴퓨터 계측 및 제어 시스템을 설계 제작하여 프로그램에 의해 온도 및 무게를 자동(自動) 측정(測定)하고 on-off작동(作動)에 의한 온도 제어와 D/A변환기(變換機)를 부착(附着)한 접속장치(接續裝置)로 풍량을 필요에 따라 자동 제어할 수 있었다. 건조 실험에 관여하는 변수들의 기록과 분석을 컴퓨터화 함으로써 수분감량(水分減量)을 일일이 칭칭량법(稱量法)으로 측정하 는번거로움과 시간을 절약할 수 있었다. 더욱이 계측(計側) 과정에서 건조계(乾燥系)를 전혀 흐트려뜨리지 않게 함으로써 건조가 완료될 때까지 건조환경을 그대로 유지할 수 있었고 자료의 채취시간도 프로그램을 통하여 임의(任意)로 설정하여 조절(調節)할 수 있어 건조실험을 완전 자동화할 수 있었다. 또한 건조 진행중에 software적으로 풍속을 변화시켜 건조를 행한 결과 건조 초기에는 풍속이 건조속도에 크게 영향을 미치나 건조 말기에는 영향이 적었다.

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