• Journal of Platform Technology
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• v.11 no.6
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• pp.106-115
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• 2023

In this paper, we propose a sensor data sharing system for the safe and smooth operation of autonomous vehicles on two-way single lanes in traffic-isolated areas and implement the core module, the situational awareness technology. Two-way single lanes pose challenges for autonomous vehicles, particularly when encountering parked vehicles or oncoming traffic, leading to reversing issues. We introduce a system using infrastructure cameras to detect vehicles' approach, enter, and leave on twoway single lanes in real-time, transmitting this information to autonomous vehicles via V2N communication, thereby expanding the sensing range of the autonomous vehicles. The core part of the proposed system is the situational awareness of the two-way single lane using infrastructure cameras. In this paper, we implement this using object detection and tracking technology. Finally, we validate the implemented situational awareness technology using data collected from actual two-way single lanes.

• 월간 기계설비
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• s.295
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• pp.57-68
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• 2015

내전 후 전쟁 상처를 복구 중에 있는 이라크는 주택, 인프라, 사회 서비스망 구축의 필요에 따라 지난 2010년 이라크 기획청(Ministry of Planning, MOP)이 이라크의 삶의 질 개선을 위한 국가개발계획(Iraq National Development Plan, 2010 ~ 2014)을 수립하고 15개 주정부와 쿠르드 자치정부 지역에 100만호 주거 시설 제공을 위한 국가 주택 프로그램을 발표했다. 이에 따라 2017년까지 주택과 교통인프라, 에너지, IT, 의료, 보안 등에 걸쳐 총 2,750억불(약 300조원)을 이라크 재건사업에 투자할 계획이다. 또 2030년까지는 에너지 분야에 5,000억불 투자 등 정유공장, 발전소, 도로, 인프라, 공공시설 및 군시설 등 다양한 분야에 최소 7,000억불에 달하는 예산을 투입할 예정이다. 한화건설은 지난 2012년 80억 달러 규모의 이라크 비스마야 신도시 건설공사를 수주해 우리나라 해외건설 역사상 최대 규모의 프로젝트 기록을 세웠다. 또한 이 계약으로 우리나라 해외건설 누적 수주액 5,000억 달러 돌파에 크게 기여했다. 윤창기공(주)(대표 백종윤)는 비스마야 현장에서 PC 플랜트 현장의 기계설치공사와 하우징 현장의 기계설비 및 소방공사를 담당하고 있다. 본지는 이라크 현장에 있는 윤창기공(주) 정몽준 소장과 김용우 소장을 이메일로 만나 보았다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.109-111
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• 2019

스마트 항만 IoT 인프라 및 정보수집 제공 장치 개발 과제는 항만 IoT 인프라와 정보수집 및 제공 장치 개발을 통해 항만물류자원들의 상호 간 초연결 네트워크를 구축하고, 이를 기반으로 실시간으로 정보를 수집 분석하여 제공함으로써 화물, 사람, 장비, 시설 등을 포함하는 항만 내 모든 자원의 연결성을 90% 이상 확보하고, 더불어 선박, 외부트럭, 교량, 교통 등을 포함한 항만 외 외부자원과의 연결성을 강화하는 것을 목적으로 한다.

• Journal of the Korean Regional Science Association
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• v.35 no.3
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• pp.59-76
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• 2019

This study aims to develop urban scenarios for future cities and validate the future city scenarios using a Delphi method. The scenarios of future city was derived from urban structure, land use, transportation, and urban infrastructure and development using big data analysis, environmental scanning techniques, and literature review. The Delphi survey interviewed 24 erudite scholars and experts across 6 nations including Korea, USA, UK, Japan, China, Australia and India. The Delphi survey structure was designed to test future city scenarios, verified by the 5-point Likert scale. The survey also asked the timing of each scenario likely happens by the three terms of near-future, mid-future and far-future. Results of the Delphi survey reveal the following points. Firstly, for the future urban structure it is anticipated that urban concentration continues and higher density living in global mega cities near future. In the mid-future small and medium size cities may decrease. Secondly, the land use pattern in the near-future is expected of increasing space sharing and mixed or layered vertical land-use. In addition underground space is likely to be extended in the mid-future. Thirdly, in the near-future, transport and infrastructure was expected to show ICT embedded integration platform and public and private smart transport. Finally, the result of Delphi survey shows that TOD (Transit Oriented Development) becomes a development norm and more emphasis on energy and environment fields.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.06a
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• pp.273-275
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• 2014

육상으로부터 다양한 고급 정보를 전달 받아서 항해의 안전성과 효율성을 높이는 항해지원 기술의 필요성이 제기되고 있고, 이러한 맥락에서 e-navigation에서도 육상-선교간 정보 교환을 토대로 항해 관련 정보를 주고 받는 기술에 대해 강조하고 있다. 본 연구에서는 실시간 항행정보시스템의 구축을 위한 요소 기술 개발 단계에서 개발된 교통정보 및 사고정보 모듈을 실선에 탑재하여 실해역 시험을 수행하고, 실해역 시험 결과를 통해 파악된 문제점을 분석하여 향후 실시간 항행정보시스템의 구축 방향을 정비할 수 있는 방안을 마련하였다. 실험 결과, 육상과 선교간 통신 인프라의 한계를 체감하였으며, 실시간 항행정보시스템에서 육상-선교간 정보 컨텐츠 뿐만 아니라, 제한된 통신 인프라에서의 정보 교환 방법에 대한 적극적인 해결 방안이 마련되어야할 필요성을 인지하였다.

• Spatial Information Research
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• v.19 no.3
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• pp.63-72
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• 2011

Urban space structure tends to have a significant change in accordance with maintenance of urban infrastructure such as a traffic route. For this reason, quantitative analysis has been needed to establish spatial distribution and location patterns by considering change of both road accessibility and urban infrastructure level, which can have the most pervasive influence in urban development process. Therefore, this paper aims to analyze spatio-temporal urban morphology through considering distribution patterns of road among transportation infrastructures, population, and spatial structure of metropolitan areas, focusing on Seoul where population growth and the size of urban area have been dramatically increased. For this, we firstly developed and constructed time-series GIS database by using satellite images and topographic maps of the last 70 years to analyze variables which affect urban growth and transportation. In particular, we analyzed the transform of the system of the street by Space Syntax which is able to grasp hierarchical spatial structure through visibility of space and spatial cognition in terms of accessibility. What's more, we analyzed and visualized the relationship urban morphology and road according the regions of Seoul through IPA(Importance Performance Analysis). In terms of the integration land-use and transportation, Space Syntax approach is expected to contribute to efficient urban planning through understanding the influence which various transportation phenomena has an effect on urban development patterns.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.14 no.6
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• pp.133-140
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• 2015

C-ITS is a system that uses bidirectional communication between two vehicles or infrastructures to control traffic more conveniently, and safely. If C-ITS security is not properly prepared, it can cause traffic congestions and fatal traffic accidents, and therefore can affect greatly on the driver's life. This paper proposes the prevention and response mechanisms based on the cyber attack scenarios that can be used to attack C-ITS.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.669-674
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• 2017

Due to the depletion of fossil fuels and the increase in environmental pollution, electric vehicles are attracting attention as next-generation transportation and are becoming popular all over the world. As the interest in electric vehicles and the penetration rate increase, studies on the charging infrastructure with vehicle-to-grid (V2G) technology and information technology are actively under way. In particular, communication with the grid network is the most important factor for stable charging and load management of electric vehicles. However, with the existing centralized infrastructure, there are problems when control-message requests increase and the charging infrastructure cannot efficiently operate due to slow response speed. In this paper, we propose a new charging infrastructure using mobile edge computing (MEC) that mitigates congestion and provides low latency by applying distributed cloud computing technology to wireless base stations. Through a performance evaluation, we confirm that the proposed charging infrastructure (with low latency) can cope with peak conditions more efficiently than the existing charging infrastructure.

• Korean Journal of Construction Engineering and Management
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• v.21 no.5
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• pp.29-37
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• 2020

This study analyzed the importance of factors according to the investor's perspective through a survey of residential real estate experts using AHP and fuzzy theory. Analysis results showed that rent, profitability, traffic accessibility, commercial and infrastructure, and financial regulation are important in common. By expert group, financial and credit groups cited profitability, rent, traffic accessibility, supply and tax benefits, construction and development groups cited traffic accessibility, rent, direct access, profitability, commercial area and infrastructure, and appraisal and evaluation groups cited rent, profitability, transportation accessibility, financial regulation and supply as the most important factors. This showed that it had a preference characteristic that was associated with work. In other words, it focuses most on the financial perspective in investment characteristics, and it values convenience such as accessibility to transportation and commercial districts and infrastructure as its location characteristics. In addition, it was found that easing financial regulations in the market is important to expand investment in real estate. This study aims to help the business feasibility analysis of residential property developers and rational decision-making of general investors who are consumers, taking into account the various perspectives of the expert group.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2017.11a
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• pp.111-112
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• 2017

최근 교통사고 화재 자살 감염병 등 4대 분야는 최근 3년간(2012~2014) 평균 사망자수(26,292명) 대비 '18년까지 4,201명(16%) 감축을 목표로 하고 있다. 행정안전부의 지역안전지수 공개에 따라 지자체별 안전사고 사망자수 감축을 목표로 다양한 정책이 추진 중이다. 안전한 도시구축을 위한 안전 인프라 사업을 지자체별로 도출하고 있으나, 효율적인 사업 콘텐츠 마련에 어려움을 겪고 있다. 본 연구로 사업추진의 성공모델(Best Practice)을 창출할 수 있도록 안전 인프라 사업 콘텐츠를 도출하였다. 안전도시 구축의 전국확산을 위한 지역별 안전관리 대상지를 선정하고 효율적인 국가 및 지자체 예산 마련의 기초자료로 활용이 가능하다.