• 한국ITS학회 논문지
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• 제4권2호
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• pp.45-52
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• 2005

ITS에 대한 사업효과분석은 기존의 전통적인 계획모형을 통해서 산정하기 어려운 문제점을 안고 있다. 이는 전통적인 교통계획 모형이 교통정보와 ITS기술 도입에 따른 영향에 대해 민감하지 못할 뿐만 아니라, ITS기술의 비용, 편익 값에 대한 입력자료가 부재하기 때문이다. Sketch-planning 기법은 전통적인 4단계수요모형을 기반으로 ITS구축에 따른 여행자 패턴 변화를 추정하여 입력 자료로 활용한다. 구축할 ITS시스템의 대안을 수립하고 이때 기본 사례(Do Nothing Case)와 실행사례(Do Case)를 비교하여 이에 대한 비용 편익을 산출하는 과정으로 구성되어 있다. Sketch-planning기법은 입출력 인터페이스, 대안발생 모듈, 편익모듈, 비용모듈, 대안비교 모듈의 5개 모듈로 구성되어 있다. 본 논문에서는 대전광역시 첨단교통모델도시를 사례로 Sketch-planning기법을 이용하여 분석하였다.

• 산업공학
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• 제11권1호
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• pp.41-53
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• 1998

The Korean government has made efforts to establish ITS (Intelligent Transport System) strategic plans and to implement ITS. Commercial Vehicle Operation (CVO) has been developed in Korea as one of five subsystems in ITS and also in the context of Integrated Logistics Information Systems (ILIS). A low-level strategic plan of CVO is fixed on October, 1997, which has two subsystems and six major services. In this paper, services, requirements and information technologies for CVO are introduced as well as operational tests, deployment cases and cost-effectiveness.

• 한국ITS학회:학술대회논문집
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• 한국ITS학회 2005년도 제4회 추계학술대회 및 정기총회
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• pp.120-124
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• 2005

교통 환경 개선을 위해 지능형교통시스템을 도입하여 지자체의 발전을 가속화 시키고 있다. 지난번에 3개의 시를 첨단교통모델도시로 선정하여 ITS의 교두보를 마련하여, 현재 9개의 도시에 u-City구축을 위해 추진하고 있어 각 도시의 개발사업현황을 알아보았다. 본 논문은 지능형교통체계 구축사업 분석과 특징, VISION, 국가 ITS사업을 위한 효율적인 추진전략을 제시하고 발전 방안을 연구하였다.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2008년도 정보통신설비 학술대회
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• pp.500-503
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• 2008

Vehicular Ad hoc Networks have attracted extensive attentions in recent years for their promises in improving safety and enabling other value-added services. Security and privacy are two integrated issues in the deployment of vehicular networks. Privacy-preserving authentication is a key technique in addressing these two issues. We propose a hash chain based authentication protocol that preserves the user privacy. We show that the our scheme can efficiently authenticate users. Name of Our protocol is

• 디지털융복합연구
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• 제10권11호
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• pp.365-369
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• 2012

사물지능통신은 낮은 네트워크 비용과 범위에서 이점을 가지고 있다. 사물지능통신의 지능형 자동차는 구성요소와 망 규모의 비율로 차량간 위치에서 극심한 변화를 보여준다. 지능형 자동차는 무선 통신 기능으로 자동차 장치들 간에 정보를 교환하기 위해 차량 애드 혹 망에서 생체 정보를 통하여 안전성 제공을 요구한다. 본 논문은 자동차 이동시 자동차간의 상호 인증을 위해 생체 정보를 제공하는 기법을 제안한다.

• 산업경영시스템학회지
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• 제20권43호
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• pp.91-97
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• 1997

The objective of a traffic management system is to promote safe driving, low pollution, short travel time, and optimized traffic flow by naturally distributing the flow of traffic through the use of suitable telecommunications media. Such traffic management systems will be improved by integrating dynamic traffic data and two-way communication media because cars can work as sensors. The purpose of this paper is to help organizations trying to select the correct telecommunications media for minimal-cost investment options without loss of functionality. The wireless communications for an intelligent transportation system (ITS) are introduced in this paper. We describe which kind of telecommunication media are suitable. FM broadcast type media or cellular phone can be recommended to provide real time traffic and roadway conditions in the first stage of ITS, because existing broadcast base station or cellular network facilities can be used. It is expected that cellular radio network or satellites are used for communication. Finally, the strategy and deployment plan of an ITS are described based on selections of telecommunication media in Korea.

• Nuclear Engineering and Technology
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• 제49권5호
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• pp.896-904
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• 2017

Several Generation IV nuclear reactor concepts have goals for optimizing investment recovery through phased introduction of multiple units on a common site with shared facilities and/or reconfigurable energy conversion systems. Additionally, small modular reactors are suitable for remote deployment to support highly localized microgrids in isolated, underdeveloped regions. The long-term economic viability of these advanced reactor plants depends on significant reductions in plant operations and maintenance costs. To accomplish these goals, intelligent control and diagnostic capabilities are needed to provide nearly autonomous operations with anticipatory maintenance. A nearly autonomous control system should enable automatic operation of a nuclear power plant while adapting to equipment faults and other upsets. It needs to have many intelligent capabilities, such as diagnosis, simulation, analysis, planning, reconfigurability, self-validation, and decision. These capabilities have been the subject of research for many years, but an autonomous control system for nuclear power generation remains as-yet an unrealized goal. This article describes a functional framework for intelligent, autonomous control that can facilitate the integration of control, diagnostic, and decision-making capabilities to satisfy the operational and performance goals of power plants based on multimodular advanced reactors.

• ETRI Journal
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• 제40권3호
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• pp.318-329
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• 2018

Femtocell (FC) technology envisaged as a cost-effective approach to attain better indoor coverage of mobile voice and data service. Deployment of FCs over macrocell forms a heterogeneous network. In urban areas, the key factor limits the successful deployment of FCs is inter-cell interference (ICI), which severely affects the performance of victim users. Autonomous FC transmission power setting is one straightforward way for coordinating ICI in the downlink. Application of intelligent control using soft computing techniques has not yet explored well for wireless networks. In this work, autonomous FC transmission power setting strategy using Adaptive Neuro Fuzzy Inference System is proposed. The main advantage of the proposed method is zero signaling overhead, reduced computational complexity and bare minimum delay in performing power setting of FC base station because only the periodic channel measurement reports fed back by the user equipment are needed. System level simulation results validate the effectiveness of the proposed method by providing much better throughput, even under high interference activation scenario and cell edge users can be prevented from going outage.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제1권1호
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• pp.19-31
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• 2007

RFID tag is detected by an RFID antenna and information is read from the tag detected, by an RFID reader. RFID tag detection by an RFID reader is very important at the deployment stage. Tag detection is influenced by factors such as tag direction on a target object, speed of a conveyer moving the object, and the contents of an object. The water content of the object absorbs radio waves at high frequencies, typically approximately 900 MHz, resulting in unstable tag signal power. Currently, finding the best conditions for factors influencing the tag detection requires very time consuming work at deployment. Thus, a quick and simple RFID tag detection scheme is needed to improve the current time consuming trial-and-error experimental method. This paper proposes a back-propagation learning-based RFID tag detection prediction scheme, which is intelligent and has the advantages of ease of use and time/cost savings. The results of simulation with the proposed scheme demonstrate a high prediction accuracy for tag detection on a water content, which is comparable with the current method in terms of time/cost savings.

• Steel and Composite Structures
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• 제29권5호
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• pp.669-680
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• 2018

The rapidly decreasing natural resources and the global variation of the climate push us to find intelligent and efficient structural systems to provide more people with fewer resources. This paper proposed a kinematic cable-strut system to realize sustainable structures in responding to changing environmental conditions. At first, the concept of the kinematic system based on crystal-cell pyramid (CP) cable-strut unit was given. Then the deployment of the structure was studied experimentally. After that, the static behaviors in the fully deployed state under the symmetric and asymmetric load cases were investigated. Moreover, the effects of thermal loading and the initial prestress distribution were also discussed. Comparative studies between the proposed structure and other deployable cable-strut system under three times of design load cases were carried out. Finally, the robustness of the system was studied by removal of one passive cable at one time.