• 디지털융복합연구
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• 제14권5호
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• pp.283-291
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• 2016

철도는 이제 대표적인 대중교통 수단이다. 하지만, 철도를 운영하는 운영기관마다 철도정보를 관리하고, 서비스를 제공하고 있다. 즉, 철도 운영기관 별로 관리하고, 서비스하는 정보와 정보의 형태가 다르기 때문에, 철도이용객은 정확하고, 통합된 정보를 제공받지 못하게 된다. 따라서 다양한 형태의 역사정보, 운영정보, 열차정보, 이용객정보와 같은 철도정보를 단일화된 표준철도정보로 통합하기 위한 방안이 필요하다. 이에, 본 연구에서는 각 운영기관에 산재해 있는 철도정보에 대한 표준분류체계 및 표준정보를 정의하고, 표준정보로의 시스템적 수집 및 마이그레이션 방법을 고찰하였다. 이를 통해, 철도이용객은 실시간으로 모든 철도정보를 한 번에, 한 눈에, 한 곳에서 이용할 수 있으며, 이러한 체계적이고 통합적인 철도정보 관리는 새로운 서비스를 창출할 수 있는 기회를 제공하고, 철도 정보서비스를 획기적으로 발전시킬 수 판단된다.

• 한국환경과학회지
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• 제19권7호
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• pp.917-929
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• 2010

This paper aims to find out the statistical characteristics of the weather related railroad accidents and incidents. Data from Korea Railroad Operation Information System(KROIS) and Korea Railroad Accidents reports during 1996-2008 were used to investigate the occurrence frequency of railroad accidents and operation obstacles and their association with weather phenomena. The results are as follows; The occurrence frequency of railroad accidents and operation obstacles decrease gradually, and most of railroad accidents is a railroad traffic accidents. The amount of damages by a railroad weather-related accidents is higher than those of the railroad accidents and operation obstacles. It was also found that weather events influencing the railroad weather-related accidents and incidents are rainfall, snowfall, lightning, winds. And they caused a railroad weather-related accidents and incidents, such as railway obstruction, signal failure, and power supply failure. Therefore we need research about threshold review and a quantitative and qualitative analysis of a railroad weather-related accidents and incidents according to climate change.

• 한국인터넷방송통신학회논문지
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• 제16권2호
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• pp.9-18
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• 2016

철도는 이제 대표적인 대중교통 수단이다. 하지만, 철도를 운영하는 운영기관마다 철도정보를 관리하고, 서비스를 제공하고 있다. 즉, 철도 운영기관 별로 관리하고, 서비스하는 정보와 정보의 형태가 다르기 때문에 철도이용객은 정확하고, 통합된 정보를 제공받지 못하게 된다. 이에 본 연구에서는 철도이용객이 원하는 철도정보 서비스에 대한 니즈를 파악하고, 이를 기반으로 모든 철도정보를 한 번에, 한 눈에, 한 곳에서 이용할 수 있는 통합적 서비스 방안을 모색하고자 한다. 또한, 철도이용객에게 보다 직관적이고, 가시화된 서비스인 지식맵 서비스를 제공하고자 온톨로지 기반의 지식베이스 구축 방안에 대해 고찰하고자 한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권12호
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• pp.4763-4775
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• 2020

This research aims to develop a deep learning-based method that automatically detects and segments the defects on railroad surfaces to reduce the cost of visual inspection of the railroad. We developed our segmentation model by modifying a fully convolutional network model [1], a well-known segmentation model used for machine learning, to detect and segment railroad surface defects. The data used in this research are images of the railroad surface with one or more defect regions. Railroad images were cropped to a suitable size, considering the long height and relatively narrow width of the images. They were also normalized based on the variance and mean of the data images. Using these images, the suggested model was trained to segment the defect regions. The proposed method showed promising results in the segmentation of defects. We consider that the proposed method can facilitate decision-making about railroad maintenance, and potentially be applied for other analyses.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 춘계학술대회 논문집
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• pp.121-125
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• 2003

This study discusses how the appropriate distribution and logistic information system of the railroad industry will be developed when the Korean railroad will be open toward northeast Asia area through South Korea and China/Russia in the rail-ferry project and/or the inter-Korean railroad connection project in the fnture. This study suggests that the Korea railroad industry should build the own efficient information system of railroad distribution and logistics in the notheast Asia area far both the extension of customer services and the competition with peripheral countries around the pacific.

• 한국철도학회논문집
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• 제7권1호
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• pp.20-25
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• 2004

Railroad geotechnical information management system was developed by using Web GIS and DB in this study. The standardization of railroad geotechnical information is progressed by classifying three groups as like basic informations, vibration informations along railway lines and design drawings. The basic informations consisted of basic and dynamic properties of soils, geophysical exploration and seismic survey/exploration. And the specification for 'human exposure to whole-body vibration' was adopted to construct the vibration informations along railway lines. The informations as like drawings and photographs were saved by changing to graphic files in the standardization of design drawings. In the case of standardization of geographical information, the topographical maps(NGIS, 1:5000) were primarily used as digital maps. Another digital maps(KRRI, 1:5000) and their geographical DB based on NGI code system were added on this maps. The standardized informations were used to construct their database. And railroad information management system was developed using Entity-Relation(ER) model which had a good feasibility for expansion and transition to other system in designing stage of database. This system consisted of layer selection, search and analysis of geotechnical informations and Zeus DB was adopted for GIS operating and user interface. This system could be a good tool for saving, searching and analyzing the geotechnical and geophysical informations. These DB systems would offered the basic informations to plans, design and construction of railroad lines etc. in practical use.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2001년도 봄 학술발표회 논문집
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• pp.191-198
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• 2001

Present status of railroad slopes through the field investigation in 26 selected slopes and/or rockfall at risk was grasped. From the evaluation of field data, main characteristics of railroad slopes are that 1) the possibility of failure by rockfall is high, 2) the Possibility of failure by slope itself is low and 3) rockfall's risk at the in and out part of tunnel is especially high. To maintain the railroad slopes systematically and reasonably, it is necessary to make and to use the database of slopes information along the railroad. Furthermore, through the construction of basic slopes' information, maintenance system of railroad slopes was developed in connection with IR-DiPS(Intelligent Railroad - Disaster Prevention System) in the future.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.1097-1104
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• 2008

Life cycle costing is one of the most effective approaches for the cost analysis of long-term life products, like as railroad vehicle. Life cycle costing includes the cost of concept design, development, manufacture, operating, maintenance and disposal. Especially, life cycle costing in the railroad industry has been focused on the maintenance cost. In this paper, we investigated the standard, guide and maintenance information of railroad vehicle. For this purpose, we suggested the unique templates of railroad vehicle maintenance information. We also performed maintenance cost analysis on the some sub-system of railroad vehicle for the case study.

• 한국전자거래학회지
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• 제13권3호
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• pp.121-135
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• 2008

현재 화차를 이용하여 화물을 운송하는 철도 물류는 국내 화물 물동량의 $10{\sim}20%$ 가량을 담당하고 있다. 철도물류 사용자인 운송사(화주 포함) 또는 내륙화물기지는 철도물류 업무를 처리하기 위해 EDI(XML)를 통해 문서를 전송하거나 WEB을 통해 데이터를 입력하고 있다. 그러나 점차 e-비즈니스 환경이 활성화됨에 따라 기존 철도물류 업무에 대한 개선이 요구되고 있다. 또한 확장성 있는 ebXML 기반의 스키마 형식의 사용이 확산되면서 DTD 구조의 전자문서를 XML 스키마 형태로 개선할 필요성도 제기되고 있다. 본 논문에서는 철도물류업무 개선을 위한 철도물류 정보 표준을 연구하고자 한다. 이를 위하여 기존 비즈니스 프로세스를 재정의 하여 불필요한 업무를 개선하고, 비즈니스 프로세스 모델링으로 철도 물류 액티비티를 정의해서 최종 정보 모델을 도출한다. 또한 도출된 정보 모델에 따라 새로운 전자문서를 설계할 수 있도록 비즈니스 정보 개체를 정의하였으며, 철도물류 정보시스템의 개선된 구조도 제안하고자 한다. 이를 통해 철도물류 비즈니스에 효율적이고 확장성 있는 업무 절차를 제공할 수 있을 것이다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 춘계학술대회 논문집
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• pp.388-392
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• 2003

In this study, various railroad geotechnical informations were standardized. The standardization was progressed by classifying the informations as basic properties, railroad vibrations and design plans. Basic informations included soil properties(27), dynamic property(1), geophysical prospecting(1), and elastic wave prospecting(4). Specification for 'human exposure to whole-body vibration' was used to construct the information of railroad vibration. And in the case of the information of design plan, the way to save by graphic files was chosen. Thus standardized informations examined their application by setting up database. Entity-Relation(E-R) model was used in the design of database and by this, the database system was constructed. This database system will be able to serve the performance enhancement of railroad system.