• 경영과정보연구
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• 제2권
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• pp.335-354
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• 1998

In this study I construct CAN(Controller Area Network) for automobiles similar to LAN(Local Area Network) and build communication modules in the major part of an automobile to link several sub-systems. Since each station replaces the communication function of sub-systems and has various types of sensor, actuator, controller, and switch, every information about automobile's status is obtained from the network. The manufactured system showed a superior capability. The following is the contents of study. 1. The definition of communication packet through the analysis of CAN protocol. 2. The Design of modules using micro-controller 80C196CA. 3. The Network configuration.

• 산업경영시스템학회지
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• 제28권2호
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• pp.101-108
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• 2005

In this paper, the design problem of local area networks is defined as finding the network topology minimizing cost subject to reliability constraint. The design problem includes issues such as multiple choices of link type for each possible link, multiple choices of hub type for each hub, and allocation of the users to the hubs. To efficiently solve the problem, a genetic approach is suggested. According to the experiments, the proposed approach improves search performance.

• 한국군사과학기술학회지
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• 제13권5호
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• pp.917-923
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• 2010

The local area weather information is very important element to estimate where the air-pollutant will flow. But the existing NBC hazard prediction model does not consider the local area weather information. So, in this paper, we present SN-HPM that uses the local area wether information to perform more accurate and reliable estimate, and embody it to program.

• 전기전자학회논문지
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• 제7권2호
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• pp.260-264
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• 2003

네트워크의 성능 향상에 영향을 미치는 여러 요소 중에서, 본 연구에서는 NIC(Network Interface Card) 버퍼 사이즈(Buffer Size)가 웹 서버와 LAN(Local Area Netwok)에 어떤 영향을 미치는지를 분석하였다. 버퍼 사이즈의 조절을 통해서 내부 네트워크의 패킷 분실율, 처리량, RTT(Round Trip Time), 수신율의 변화를 NS-2를 사용하여 시뮬레이션 해보고 그 결과를 비교하여 이더넷(Ethernet)에서의 웹 트래픽에 미치는 영향을 분석하였다.

• 농촌계획
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• 제24권1호
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• pp.11-19
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• 2018

The purpose of this study was to analyze the participant's perception of importance and performance of rural tourism network products that are linked with local resources, and propose the implications on the development direction of such products. The focus is on helping rural tourism network products acquire competencies that will help them evolve their business and differentiate themselves. To reach these objectives, a survey was designed through theoretical research on the motive of rural tourism and on agritourism networks. The survey was carried out on visitors to rural communities that produce rural tourism network products from November, 2015, to January, 2016 using 165 copies of a questionnaire after distributing 175 copies. The first quadrant continue and sustain', an area of high importance and high performance, included trial program components, stress reduction, getting away from daily routines, gaining new experiences, comfort, experiencing rural culture, travel expenses, and making memories with family. The second quadrant 'requires intensive improvement', an area of high importance but low performance, included having diverse trial programs, refreshment, experiencing agriculture, and education of children. Therefore, continuous interest is required for the area of 'maintenance' just as it is for activating educational farms in rural communities and a more fundamental improvement in the operation should be made for the area of 'intensive management'.

• 정보화사회
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• 통권9호
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• pp.10-13
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• 1988

• 전자공학회지
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• 제10권1호
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• pp.6-9
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• 1983

• 정보와 통신
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• 제14권8호
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• pp.41-57
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• 1997

• 정보보호학회논문지
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• 제25권6호
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• pp.1515-1523
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• 2015

다양한 모바일 기기가 등장하면서 WLAN(Wireless Local Area Network)을 통하여 네트워크 서비스를 받는 경우가 많아졌다. 그러나 제한된 ESS(Extended Service Set) 영역에 한꺼번에 급격히 많은 수의 모바일 기기가 네트워크 접속을 시도할 경우, 현재 WLAN 보안 표준인 802.11i의 초기 링크 셋업 과정은 네트워크 연결 지연 문제를 발생시킨다. 본 논문에서는 802.11i 기반의 ESS 영역에서 신속하고 간단한 초기 링크 셋업 과정을 수행하는 WLAN 접속 프로토콜을 제안한다.

• 전자공학회논문지A
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• 제32A권9호
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• pp.1184-1201
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• 1995

Two multiple access protocols are proposed for a multichannel WDM optical fibre local area network or metropolitan area network in which users are interconnected using a passive star topology. Each user has a single tunable transmitter and a single tunable receiver. A transmitter sends a control packet before its data packet transmission so that its intended receivers can tune to the proper data channel wavelength. The maximum throughput of the proposed protocols are independent of the effective normalized propagation delay which may include the transmitter and receiver tuning times and the processing delays. The maximum throughputs of the protocols are analyzed and compared with those of the existing ones by numerical examples. The message delay of the R- Aloha/synchronous N-server switch protocol which is suitable for the queued users is also analyzed.