• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.8 no.2
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• pp.137-148
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• 2009

Recently, as technology for obtaining locational awareness and wireless telecommunications improve, technologies and services involving Telematics has grown rapidly. However, the services are currently available on certain terminals selected by the telematics service provider (TSP). This means in order to access services provided by other TSPs, it is necessary to purchase related terminals. To solve this problem, it is essential to achieve service interoperability between TSPs, or between TSPs and the contents provider (CP). Under this backdrop, the aim of this paper is to design and implement a telematics service framework for openning services in a heterogeneous network environment. Futhermore, the paper presents open telematics protocols required for communication in the telematics service framework, and develop technologies to deal with this in different network environments.

• Information and Communications Magazine
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• v.23 no.2
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• pp.23-40
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• 2006

재난은 다양한 원인에 의하여 예측 불가능하게 발생되고 있다. 정보화의 진전에 따라 네트워크는 모든 경제활동의 근간이 되어 있으며, 재난이 발생하면 재난복구 및 구난 활동 등에 통신기능의 활용도가 더욱 높아진다. 특히 통신 장애를 일으키는 통신재난이 발생하면 그 파급효과는 빠르고, 넓게 확산되는 경향을 보인다. 국내.외적으로 국가 주요 활동의 정보통신의 의존도가 증가하고, 정보통신 기반의 복잡도와 개방성이 증가하여 위협 및 취약성이 증대하며, 정보전(cyber warfare)의 공격 위협이 증대하는데 비교하여, 통신 부문의 민영화에 따라 공공 부문 보호 영역이던 통신 부문이 민간 부문으로 확대되어 다양한 위협에 노출되어 있는 실정이다. 따라서 최근에는 통신 네트워크와 서비스를 정보통신 시스템과 서비스에 대한 독립적인 보호와 보안이라는 차원에서 한걸음 더 나아가 " 국가주요 기반 구조에 대한 보호와 위협에 대한 종합적인 대응 " 이라는 차원에서 접근하고 있다. 미국은 지난 및 비상대비 통신 전담기구인 NCS(National Communication System)와 대통령자문위원회인 NSTAC(National Security Telecommunication Advisory)등 종전부터 있던 통신 재난 및 비상 통신 관련 기구에서 진행해오던 통신 재난 및 비상 통신 관련 기구에서 진행해오던 통신 재난 및 비상 통신 관련 업무를 9-11 사태를 경험하면서 신설된 Department of Homeland Security에서 총괄하도록 하고 있다. 캐나다의 경우는 MSAT(Mobile Satellite Services) Emergency Telecommunication Network을 통한 긴급통신 시스템을 구축하였다. 일본의 경우 우정성(현재는 총무성에 통합) 산하 비상통신협의회를 구성하여 비상통신에 관련한 협의와 점검을 추진하며 방재용 무선 시스템을 구축 운용하고 있다. 본 고에서는 이와 같은 비상통신과 관련하여 수행하고 있는 국외 비상통신 관련표준화 현황 및 해외 주요국가 별 구축 동향에 대해서 기술한다.

• Journal of the Society of Disaster Information
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• v.12 no.3
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• pp.235-241
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• 2016

Recently our country was entering a high-tech society with social and economic development. However, the individual's ability to respond to disasters is lowered by the increase in complexity society. Accurate situation assessment and disaster response by a margin of personal information that can identify when a disaster has been difficult. Until now, by leveraging Standard speaker was the emergency alert broadcast. However, it was difficult to have regular speakers reverberation, a distinct attenuation of sound by listening to the sound, etc. due to the reflection of sound. By using a directional speaker that is characteristic of the sound attenuation of sound is straight to solve this problem and obtain feedback on measures that can effectively provide the oocytes to a valid information on a disaster situation and the evacuation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.617-624
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• 2018

The purposes of this study are to propose architectural design and evacuation management guidelines for child care center with disabilities. To achieve these purposes, the questionnaire has carried out for director who manage child care center and analyzed the architectural characteristics of child care center for children with disabilities. The results of this study are as follows : (1) 65.3% directors think that less than 30% of children with disabilities in child care center can evacuate by oneself, and 73.2% of child care centers have difficulties for safe evacuation because of more than 50% of children with complex disabilities. (2) The moving or visual impaired children who live more than 2nd floors are need safe refuge areas for waiting in child care centers. (3) The child care centers for children with disabilities which were renovated from housing and multi-family housing have difficulties in vertical evacuating, and needs renovating for promotion of convenience and evacuation of children with disabilities.

• Spatial Information Research
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• v.21 no.3
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• pp.11-19
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• 2013

Compared with traditional video monitoring systems that provide a video-recording function as a main service, an intelligent video monitoring system is capable of extracting/tracking objects and detecting events such as car accidents, traffic congestion, pedestrian detection, and so on. Thus, the object tracking is an essential function for various intelligent video monitoring and surveillance systems. In this paper, we propose a background and local histogram-based object tracking approach for intelligent video monitoring systems. For robust object tracking in a live situation, the result of optical flow and local histogram verification are combined with the result of background subtraction. In the proposed approach, local histogram verification allows the system to track target objects more reliably when the local histogram of LK position is not similar to the previous histogram. Experimental results are provided to show the proposed tracking algorithm is robust in object occlusion and scale change situation.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.170-172
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• 2018

지구 온난화로 인해 여름철 북극해의 해빙이 점차 감소함에 따라서 북극항로를 이용한 선박의 화물운송이 점차 증가하고 있다. IMO에서는 극지해역운항선박의 안전성과 해양오염방지를 위하여 2014년에 Polar Code를 개정하였으며, 2017년 1월부터 SOLAS협약과 MARPOL73/78협약에 추가되어 시행되고 있다. 본 연구는 해양수산부 해양안전 및 해양교통시설기술개발 사업으로 1) Polar Code 강제화에 따라 '극지해역 운항선박용 항해안전지원시스템의 개발'의 필요성과 2) 북극항로에 대한 국적선의 안전 운항 확보를 위한 '북극권 국가와의 국제협력 및 공조체계 구축'과 '극지 구난, 구조 및 환경보호 관련 국내법 및 규정 제정'을 위한 기반 연구의 필요성에 의거하여 2014년 11월 10일에 시작되었으며 2018년 12월 31일에 종료될 예정이다. 연구내용은 1) 고정밀도 북극항로 빙상정보 수치예측 시스템 개발, 2) 북극항로 안전속도 예측, 평가, DB구축 및 항행 모델 개발, 3) 북극항로 안전운항을 위한 항해계획 기술 개발, 4) 북극항로 운항선박 건조 및 안전항해 가이드라인 개발이다. 본 논문에서는 개발 중인 KRISO Arctic safe Routing System (KARS)에 대한 소개와 활용 결과 및 향후 계획에 대해서 설명하고자 한다. 본 KARS는 향후 지속적인 수정보완 작업을 통해서 완성도를 높여갈 예정이며, 검증단계를 거쳐서 최적하고 안전한 항로와 운항 관련 정보를 선사와 해기사에게 제공함으로서 북극항로 중 단기 운항계획 수립과 안전 운항을 지원할 수 있을 것으로 기대된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.553-561
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• 2021

The purposes of this study are to propose evacuation recommendations through evacuation model considering occupancy load model in child care center with disabilities. To achieve these purposes, the survey on the occupancy load and egress model and evacuation experiments have carried out, and evacuation occupancy load model for child care center with disabilities are suggested. The results of this study are as follows : (1) The evacuation plan for children with disabilities are necessary special considerations according the type and levels of disability, and various egress means and method for children in child care center with disabilities conditions. (2) The evacuation occupancy loads are different with non-impaired children and evacuation occupancy loads and evacuation corridors width are necessary considering impaired children's evacuation behaviors. (3) The temporal evacuation area(refuge area) is essential for children with disability who are impossible vertical evacuation such as impaired children using wheelchair and cerebral palsy.

• Journal of the Korean Society for Marine Environment & Energy
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• v.1 no.2
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• pp.82-95
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• 1998

In this paper, two series of numerical simulations are performed using LS/DYNA3D: The first series of numerical simulations are collision events between a 310,000 DWT double hull VLCC (struck ship) and two 35,000 and 105,000 DWT tankers (striking ships). Collisions are assumed to occur at the middle of the VLCC with the striking ships moving at right angle to the YLCC centerline. The second ones, grounding accidents of two 40,000 DWT Conventional and Advanced Double Hull lanker bottom structures, CONV/PD328 and ADH/PD328 models. The overall objective of this study is to understand the structural failure and energy absorbing mechanisms during collision and grounding events for double hull tanker side and bottom structures, which lead to the initiation of inner shell rupture and cause the kinetic energy dissipation to bring the ship to a stop. These numerical simulations will contribute to the estimation of damage extents of collision and grounding accidents and the future improvements in lanker safety at the design stage.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.4
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• pp.1-8
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• 2020

This paper proposes architectural and evacuation recommendations through evacuation experiments of two child care centers with disabilities. To achieve these purposes, a survey on the architectural characteristics and evacuation experiments was carried out. The results were as follows: (1) the child care center with disabilities were located within one kilometer or five minutes from a fire station and 119 safety center, but the architectural characteristics and the ratio of self-moving children in a care center were very different conditions. (2) The evacuation behavior patterns of children with a disability were as follows: hugging a child by a teacher with the arms, walking with hugging and holding the child by a teacher, moving a wheelchair with a helper, and drag-out a cerebral palsied child with a mat wrapping. (3) The speed of the evacuation was fast in the following order: drag-out with a mat wrapping a child with a disability, hugging the child with the arms, walking with hugging and holding child, and moving with a wheelchair. In the case of difficulties in the vertical evacuation, a temporal evacuation area was essential for children with disability.

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.1
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• pp.88-96
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• 2021

When oil tankers, large passenger ships and cargo ships sink under the sea owing to various maritime accidents, the residual cargo oil or fuel oil in the such vessels could pose direct risk to factor for the marine environment and it require safe and rapid removal. Although domestic and foreign salvage companies are adopting various recovery methods and technologies with customizations according to each site during recovery operations studies on reasonable assessment modules for the operation process are relatively insufficient. In this study, the data from trapped-oil recovery operations performed at different site conditions were collected and analyzed in order to designed an operation assessment module, define the operational process steps in terms of preparation, implementation and completion, and derive key factors for each detailed process. Subsequently, the module was designed in such a way as to construct performance indicators to assess these key factors. In order to exclude subjective opinions from the assessment as much as possible, the assessment each item was constructed with indicators based on data that could be evaluated quantitatively and its usefulness was verified by applying the module to the trapped-oil recovery operation cases. We expect this the method and the technology assessment module for the trapped-oil recovery operation on sunken vessels will help to verify the adequacy of the trapped-oil recovery such operation before or after. Furthermore, it is expected that the continuous accumulation of assessment data and feedback from past or future operation cases will contribute toward enhancing the overall safety, efficiency and field applicability of trapped-oil recovery operation.