• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.1596-1602
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• 2010

The government have plans to improve the railway transport capacity and transport hub for the sustainable national transport and logistics system. Specially, there are much efforts to improve transportation capacity such as high speed transportation of rail freight, enlargement of BT train, development of double stack train, etc. between railway transport hubs. If the transport capacity between railway logistics hubs is increased as planned, we must increase the handling capacity of railway hub terminals. But there are limits to enlarge the terminal infrastructure because of investment scale, location circumstances and urban development plans. To ensure the capacity, with the minimum required enlargement of infrastructure, it is necessary to extremely increase the efficiency of terminal operations. For improving the efficiency, we have to introduce the efficient terminal operation systems based on u-IT and operation optimize technologies. In this paper, we analyse the issues and problems of railway terminals(including ICD) and suggest the concept of intelligent railway terminal and the construction components of technology.

• 한국항공운항학회지
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• 제21권4호
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• pp.17-26
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• 2013

In this paper, a configuration procedure of a transportation infrastructure system for GNSS based very precise real-time positioning is proposed. This infrastructure system consists of several receiving station, a central station, and communication sub-systems. The required performance, design, implementation and verification of each sub-system are explained respectively. The required performance can be broken down into accuracy, integrity, stability, processing time. The design of the each sub-system is performed in accordance with the required performance and each sub-system is built with regard to the design. Lastly the implemented system is verified in comparison with the required performance.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.937-944
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• 2022

Electric vehicles (EVs) have been growing to reduce energy consumption and greenhouse gas (GHG) emissions in the transportation sector. The increasing number of EVs requires adequate recharging infrastructure, and at the same time, adopts low- or zero-emission electricity production because the GHG emissions are highly dependent on primary sources of electricity production. Although previous research has studied solar photovoltaic (PV) -integrated EV charging stations, it is challenging to optimize spatial areas between where the charging stations are required and where the renewable energy sources (i.e., solar photovoltaic (PV)) are accessible. Therefore, the primary objective of this research is to support decisions of siting EV charging stations using a spatial data clustering method integrated with Geographic Information System (GIS). This research explores spatial relationships of PV power outputs (i.e., supply) and traffic flow (i.e., demand) and tests a community in the state of Indiana, USA for optimal sitting of EV charging stations. Under the assumption that EV charging stations should be placed where the potential electricity production and traffic flow are high to match supply and demand, this research identified three areas for installing EV charging stations powered by rooftop PV in the study area. The proposed strategies will drive the transition of existing energy infrastructure into decentralized power systems. This research will ultimately contribute to enhancing economic efficiency and environmental sustainability by enabling significant reductions in electricity distribution loss and GHG emissions driven by transportation energy.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1647-1656
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• 2007

고속철도 서비스 수혜지역의 확대 요구에도 불구하고, 현재 국가 철도망 관련 상위계획 상에서 제시된 장래 국가 철도망은 수송애로구간 및 수송수요 분석에 의한 개략적인 노선계획이라 할 수 있으며, 합리적이고 장기적인 국가 고속철도망 구축방향은 마련되어 있지 않은 상황이다. 더욱이 기존 철도망의 투자우선순위 평가항목은 경제적 타당성 및 수송수요 규모 등으로 대표되는 투자 효율성, 기존 철도망과 연계될 수 있는 네트워크 연결성, 정책적 타당성으로 획일화 되어 있으며, 이중 대부분의 철도망 계획에 가장 큰 영향을 미치는 항목은 B/C 비율로 대표되는 투자 효율성 측면이라 할 수 있다. 이에 본 연구는 우리나라의 중장기적 고속철도망 계획과 투자우선순위를 전통적인 평가기법에서 벗어나 지속가능한 교통(sustainable transportation)의 관점에서 이를 분석할 수 있는 방법론을 제안하는데 그 목적이 있다. 본 연구는 먼저 지속가능한 교통에 대한 정의를 내리고, 이를 측정할 수 있는 지속가능한 교통 지표를 교통 효과성 지표, 환경지표, 경제지표 및 사회지표로 제시한 다음 지속가능한 고속철도망 평가를 위한 목표와 성과 척도를 선정하였다. 그리고 지속가능한 교통의 관점에서 우리나라 고속철도망의 계획과 투자우선순위를 분석할 수 있는 다원-속성 효용이론(multi-attribute utility theory)을 이용한 다원-기준 의사결정방법론을 제안하였다.

• Ecology and Resilient Infrastructure
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• 제3권3호
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• pp.156-161
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• 2016

세계적 기후변화 대응 관련하여, 도로분야에서는 국토교통부의 국가 R&D인 '탄소중립형 도로 기술개발' 연구단 과제가 수행되었고, 최근에는 지속가능한 발전이 다시 논의되고 있다. 연구단에서는 녹색도로 인증제 (안), 탄소저감형의 친환경 도로를 만들기 위한 녹색도로 설계와 시공 기술 개발, 도로에서의 탄소배출량을 산정하고 관리하기 위한 녹색도로기술 투자평가 시스템(G-TIES) 등이 개발되었다. 앞으로는 이들 기술의 적용 확대와 함께, 그 내용의 범위를 보다 확대한 지속가능의 개념을 고려하여 지속가능도로 시스템을 구축해 나가야 하며, 본 논문에서는 그 방안을 제안하였다.

• Asia pacific journal of information systems
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• 제30권1호
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• pp.214-228
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• 2020

Shared value enhances the competitiveness of a company while simultaneously reducing societal burdens. By allowing companies to share their resources, collaborative logistics systems provide companies with an opportunity to create shared value, namely, not only economic value by enhancing the utilization of resources, but also social value by reducing energy consumptions and greenhouse gas emissions associated with logistics and transportation. Emerging businesses, such as ES3 and Flexe, have recently demonstrated how they created shared value through collaborative logistics services, for example, ES3's collaborative warehousing and direct-to-store (D2S) program, and Flexe's on-demand warehousing platform. However, the development of collaborative logistics systems is currently at a nascent stage. There are quite a few socio-technical barriers to overcome for sharing resources (data as well as infrastructure). Drawing on the socio-technical approach, this research examines how companies create both economic and social value from collaborative logistics systems. We highlight socio-technical barriers, particularly one set of social barriers, that is, competition-oriented conservatism prevalent among companies. Using the case study methodology and interview data, we closely investigate ES3 and Flexe, which provide collaborative logistics services, and demonstrate how technical and social barriers are addressed to create shared value from collaborative logistics systems.

• International Journal of Railway
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• 제7권3호
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• pp.71-79
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• 2014

Subway systems have been a proved method of public transport and are widely used in major cities around the world. However, the time and cost it takes to construct such systems are very high, as it requires underground tunnels. Cities in various countries have implemented monorail systems as public railway transport as it can be more economical and quicker compared to subway systems in terms of construction. In addition, it provides more convenience towards the public as it is not affected to traffic, and also provides an aerial view of the city. However, the overall construction cost for monorail systems is still significantly high, and as a possible solution to further reduce the overall cost, implementation of ground-level stations and wireless power transfer technology has been proposed in this paper. A concept application layout of ground-level stations and wireless power transfer systems has been discussed, using the Daegu monorail Line 3 system as a simulation base. The expected cost for monorail systems implementing ground-level stations and/or wireless power transfer technology has been estimated based on literature survey, and was compared with the current construction cost of Daegu monorail system. Based on comparison, it has shown that implementation of ground-level stations are the most economical, and can be easily implemented for either starting or expanding the monorail line. Implementation of wireless power transfer technology is also economical, but is more feasible when starting a new monorail line as it requires components which will alter the configuration of the train and infrastructure.

• 한국산학기술학회논문지
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• 제19권2호
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• pp.595-601
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• 2018

운전자가 차량 조작에 개입하지 않고, 차량 스스로 주행하는 자율주행차량의 시대가 도래하였다. 자율주행차량 시대에서는 자율주행차량이 도로환경을 정확히 인식함으로써, 자율주행 차량의 안전성을 확보 할 수 있다. 그러나, 도로환경을 구성하고 있는 요소는 도로안전시설, 교통관리시설, 횡단구성으로 구분 할 수 있으며, 각각을 구성하고 있는 종류, 형태 및 규격은 다양하다. 따라서, 도로환경을 구성하고 있는 시설물 중에서 우선적으로 취득해야 하는 도로시설물에 대한 우선순위 결정이 필요하다. 본 연구에서는 전문가 설문 및 AHP(Analytical Hierarchy Process)기법을 이용하여 도로시설물 인식에 대한 우선선위를 결정하였다. AHP 분석을 위해 항목을 2계층으로 구분했으며, 1계층은 도로안전시설, 교통관리시설, 횡단구성, 2계층은 시선유도시설을 포함한 26개의 항목을 구분하였다. 분석 결과, 1계층에서는 도로안전시설, 교통관리시설, 횡단구성 중 교통관리시설이 가장 우선순위가 높은 것으로 나타났으며, 2계층에서는 방호울타리(도로안전시설), 교통신호기(교통관리시설), 중앙분리대(횡단구성)의 우선순위가 높게 나타났다. 또한, AHP 분석 기법을 이용하여 도출된 고정환경을 추출하는 사례를 제시하였다. 본 연구에서 제시한 도로시설물에 대한 우선순위 선정 결과는 자율주행차량을 위한 인식기술 지원 연구에 도움이 될 것으로 기대된다.

• International Journal of Contents
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• 제14권4호
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• pp.39-50
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• 2018

This paper analyzes the existing transportation systems of Nigeria and Korea and proposes a new railway and roadway design for Nigerian cities. The research findings and feasibility study revealed that the state of Nigeria's transportation system was critical as was its market segment, infrastructural deficit and financial requirement needed to implement a smart transportation system. The dilapidation of the existing infrastructure coupled with poor maintenance culture and limited public transport services has hindered the economic growth of Nigeria and its cities. A case study of Korea and Japan shows some possible solutions to Nigeria transportation challenges. Analytical and descriptive methods were used to critically assess the infrastructural challenges, movement, and convenience. The study proposed the design of a new intercity railroad and roadway across Abuja, Enugu, Lagos and Port Harcourt cities. The proposed designs have been established to be an innovative solution with advanced benefits over the current system. The implementation of the proposed designs is estimated to cost about US$(77,832,027,719) across the study areas. Thus, the discussion, conclusion, and recommendations given present a proposal to the Nigerian government on the possibility of solving the Nigerian intercity railroad and roadway transportation challenges across Abuja, Enugu, Lagos and Port Harcourt cities through smart designs.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.380-387
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• 2009

In the past, many state Departments of Transportation (DOTs) in the U.S. managed their highway assets on a "worst first" basis and planned their highway projects in a tactical rather than strategic fashion. Due to increasingly tight highway budgets and recognition of long term benefits of asset management systems, the Federal Highway Administration (FHWA) has strongly pushed and encouraged state DOTs to implement asset management for managing their highway assets and highway projects. Currently, many DOTs have actively implemented and are in the process of applying this asset management concept for their highway infrastructure. However, different DOTs are developing different asset management systems because of their different organizational structures, data management structures, relationship with the legislature, and investment priorities. This study first identifies asset management indicators which are essential to successfully implementing asset management systems for State highway assets. The research team conducted a survey of asset management experts and reviewed the practices and policies of leading DOTs in asset management. Based on these indicators, this study develops an Asset Management Assessment Model (AM²) for different asset management systems. This model can be used by different DOTs to evaluate their current asset management systems and identify their strong areas and also their weak areas to improve in order to fully benefit from the advanced concept of asset management.