• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.11 no.2
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• pp.39-47
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• 2012

In this paper, we have developed the system of emergency vehicle preemption signal control based on UTIS(Urban Traffic Information System) which have been deployed and operated in the national capital area. It considered the turning direction(through or left turn) of emergency vehicle at the signalized intersection in order to provide the consecutive progression of emergency vehicle and minimize the control delay of passenger cars. we adopted several EVP control modes such as phase insertion and phase adjustment mode. Also, we evaluated the possibility of field implementation via simulation analysis using CORSIM RTE(Run Time Extension) based HILS(Hardware In the Loop Simulation). We expect that the result of this research contribute to providing the right-of-way to emergency vehicle in this country.

• Korean Journal of Social Welfare
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• v.56 no.4
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• pp.149-172
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• 2004

The main purpose of this study is to explore and understand the reality of culture of poverty that employees of emergent relief facilities recognize. For this purpose, it had been carried out questionnaire with employees of emergent relief facilities from November to December 2003. It was applied quantitative research method to this study. Major findings of the study are as follows: 1) the awareness of employees to facilities in which they work is positive, 2) but their awareness to service user is negative(the degree of individual characteristic, educational characteristic and economical characteristic of service user is generally negative, while the degree of familial characteristic is generally positive), 3) the awareness to relationship with service user is positive. The results of this study reveal possibility that the culture of poverty can be expanded under the poor and psychic rehabilitation programs should be reinforced.

• The Journal of the Acoustical Society of Korea
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• v.12 no.4
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• pp.63-71
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• 1993

본 고에서는 청각장애인 및 고령인을 위한 통화대책을 강구하고자, 청각과 전화통화와의 관계, 청각장애 정도와 장애부위에 따른 고출력 전화기, 골도 전화기의 복지형전화기 및 보청기와 전화기와의 결합방법을 종합 검토한다. 또한, 고령인을 위한 전화기로서 자동다디얼이나 수화증폭 등의 기능과 긴급시에 필요한 연락을 가능하게 하는 기능을 가지고 있는 긴급통보 기능의전화기에 관하여 기술한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.200-202
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• 2012

본 연구는 연안VTS의 역량강화를 위한 방안으로 항만VTS센터에 해양경찰청 소속 직원 파견하여 합동근무를 확대시행하고 정보제공업무 위주의 현행VTS의 미비점을 보완하고, 관제통신 미청취, 항법 미준수 선박 등에 대한 계도 단속 등 현장집행능력의 강화에 따른 현황과 성과를 고찰하고자 한다. 연구방법으로는 VTS센터의 운영성과를 분석하는 방법과 파견업무 사례를 통한 실증적 연구방법을 적용하였다. 연구결과 현장집행력의 부재로 인한 긴급한 상황에 대처 능력이 미약한 집행력에 한계를 가지고 있었다. 더불어 2차사고 위험성이 있는 것으로 나타났으며 이에 대한 대응방안으로 관제센터에 부속된 전담선박(관제정)의 배치필요하다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.14 no.2
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• pp.134-139
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• 2021

Currently, the autonomous vehicle market is commercializing a level 3 autonomous vehicle, but it still requires the attention of the driver. After the level 3 autonomous driving, the most notable aspect of level 4 autonomous vehicles is vehicle stability. This is because, unlike Level 3, autonomous vehicles after level 4 must perform autonomous driving, including the driver's carelessness. Therefore, in this paper, we propose the Emergency-notification and Driver-response Confirmation System(EDCS) for an autonomousvehicle safety that notifies the driver of an emergency situation and recognizes the driver's reaction in a situation where the driver is careless. The EDCS uses the emergency situation delivery module to make the emergency situation to text and transmits it to the driver by voice, and the driver response confirmation module recognizes the driver's reaction to the emergency situation and gives the driver permission Decide whether to pass. As a result of the experiment, the HMM of the emergency delivery module learned speech at 25% faster than RNN and 42.86% faster than LSTM. The Tacotron2 of the driver's response confirmation module converted text to speech about 20ms faster than deep voice and 50ms faster than deep mind. Therefore, the emergency notification and driver response confirmation system can efficiently learn the neural network model and check the driver's response in real time.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.13 no.6
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• pp.34-42
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• 2014

This study is a fundamental research to determine the emergency evacuation roads considering road network function and connectivity. First of all, the functional aspects of the road networks are analyzed in the target area, Sejong city, by using degree centrality(DC) and closeness centrality(CC) from GIS based database. Secondly, how network connectivity makes a change in user's travel pattern and travel time and how it affects the whole network are analyzed using TransCAD simulation program. Finally, after performing cluster analysis of index, first and second emergency evacuation roads are determined by judging the characteristics of clusters. The results of this research will be helpful for making a decision to diminish secondary damages when confronting unexpected disasters.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.12
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• pp.2663-2669
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• 2010

During the past 5 years, domestic VoIP service has grown rapidly absorbing more than 8 million subscribers. More recently, the increase of enterprise or institutional subscribers become more dominant than individual subscribers. Supporting emergency services such as 119 in these scaled up VoIP services is very essential. In current domestic VoIP networks, the VoIP terminal's location information which are provided to the PSAP with the arriving emergency call depends on the information which are entered at the subscription time or updated by the subscribers when the terminal is moved to other place. This manual provision of location information which requires the user's intervention can result in serious failure in saving people in emergency situations, in case that users are negligent in entering the information or users enter the wrong information. In this paper, we propose an enhanced mechanism in which the terminal's location information is automatically offered by the network for emergency services in ethernet-based enterprise VoIP networks.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.4
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• pp.31-40
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• 2016

In vehicular ad-hoc networks (VANETs), vehicles sense information on emergency incidents (e.g., accidents, unexpected road conditions, etc.) and propagate this information to following vehicles and a server to share the information. However, this process of emergency message propagation is based on multiple broadcast messages and can lead to broadcast storms. To address this issue, in this work, we use a novel approach to detect the vehicles that are farthest away but within communication range of the transmitting vehicle. Specifically, we discuss a signal-to-noise ratio (SNR)-based linear back-off (SLB) scheme where vehicles implicitly detect their relative locations to the transmitter with respect to the SNR of the received packets. Once the relative locations are detected, nodes that are farther away will set a relatively shorter back-off to prioritize its forwarding process so that other vehicles can suppress their transmissions based on packet overhearing. We evaluate SLB using a realistic simulation environment which consists of a NS-3 VANET simulation environment, a software-based WiFi-IP gateway, and an ITS server operating on a separate machine. Comparisons with other broadcasting-based schemes indicate that SLB successfully propagates emergency messages with latencies and hop counts that is close to the experimental optimal while reducing the number of transmissions by as much as 1/20.

• Vending industry
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• v.4 no.4 s.12
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• pp.62-67
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• 2004

최근 들어 자판기 중소기업들의 경기가 말이 아니다. 가중되는 경기침체에 따라 수요위축이 가중되고 있는 현실에서 중소기업들은 악전고투를 하며 어려운 시장상황을 헤쳐나가고 있는 게 보통이다. 자판기 산업의 열악한 대외환경에 사업 투자를 중단하는 업체도 늘고 있고, 새로운 기업들의 신규투자 동향은 꽁꽁 얼어붙어 있다 할 정도로 부진하다. 한마디로 자판기 분야 중소기업은 위기 상황이라 할 정도로 많은 어려움을 겪고 있다. 아이템 지향적인 자판기 산업 특성상, 중소기업의 부진은 자판기 산업 성장동력을 급속히 위축시킨다는 점에서 심각한 문제가 아닐 수 없다. 자판기 산업이 활력을 회복하고 불황을 탈출하기 위해서는 중소기업의 새로운 활로모색이 시급한 시점이다. 금호 기획취재에서는 위기의 중소기업 상황을 긴급 진단하고, 시장 활성화 방안을 모색해봤다.

• Journal of the Korea Society for Simulation
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• v.20 no.1
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• pp.79-85
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• 2011

The problem of evacuating pedestrians from a room or channel under panic conditions is of obvious importance in daily life. In recent years, several computer models have been developed to simulate pedestrian dynamics. Understanding evacuation dynamics can allow for the design of more comfortable and safe pedestrian facilities. However, these models do not take into account the type and state of mind of pedestrians. They deal with pedestrians as particles and the state of mind as a social force, which is represented by conservative and long-range interactions between individuals. In this study, I used the lattice model proposed in my previous study to explore the evacuation behavior of pedestrians with morality. In this model, three types of pedestrians are considered: adults, children, and injured people. Collisions between adults and children result in injured people. When the number of injured people continuously in contact with each other reaches a given value k, the injured people are removed from the lattice space. This situation is the same as that in which pedestrians start stepping over injured people. This behavior was interpreted as the morality of pedestrians. Simulations showed that the evacuation showed down and eventually became jammed owing to the injured people acting as "obstacles" in relation to the morality k.