• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.501-502
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• 2018

본 논문은 건설CALS시스템에 20년간 축적된 데이터를 활용하기 위해서 2018년부터 2020년까지 개발 예정인 과적단속 최적 위치 시기 예측 서비스, 비탈면 붕괴 위험도예측서비스, 도로점용(연결) 허가 가능구간 예측 서비스, 보상비 예측 서비스 등 4종의 건설CALS 빅데이터 서비스 기술 개발을 위한 현황분석을 기술하였다. 개발된 서비스는 2020년에 국토교통부 소속기관인 지방국토관리청과 국토관리사무소의 업무담당자 및 국민에게 시범 적용하여 빅데이터 서비스의 효과를 검증하고, 단계적으로 국토교통부 도로관리 업무에 적용할 계획이다.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.663-664
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• 2007

지중송전선로 건설공사에 154kV 장조장 케이블 드럼개발 및 트레일러 일체형 Under Roller 방식을 이용한 포설장비를 개발하여 현장에 적용함으로써 신기술 신개발 공법 적용으로 인한 국제경쟁력 향상 뿐만 아니라 접속경간의 장조장 설계로 케이블 접속개소 감소로 인한 공사비절감과 공사기간 단축에 크게 기여하였다. 이와 동시에 공사를 위한 도로점용 단축으로 민원발생을 크게 감소시켰다. 현행 도로법 규제로 케이블의 운반중량이 제한되었던 케이블 표준 경간을 450m에서 최대 700m까지 가능하여 접속개소의 유연성이 확보되었을 뿐만 아니라 토목구조물(전력구,관로등)공사의 다양한 설계방법을 적용할 수 있게 되었다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.2
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• pp.153-160
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• 2017

It may be reasonable to consider density per unit area over time rather than analyze traffic volume, which is simply the traffic volume per unit of time, in assessing the maritime traffic congestion of a certain area. This study contributes to the standardization of maritime traffic congestion assessment methods for the maritime traffic safety diagnosis institute while seeking a new method to minimize evaluation error due to converted traffic volume per ship tonnage level. To solve this problem, a method to evaluate maritime traffic congestion by comparing the area occupied by a vessel with the area of its route using vessel identification data from the Automatic Identification System (AIS) has been proposed. In this new model, it is possible to use actual data due to the development of information and communication technology, reducing conversion error while allowing for the evaluation of maritime traffic congestion by route.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1050-1051
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• 2008

도로에서 전력 통신용으로 쓰이는 전주나 전선의 설치로 인한 도로 점용은 보행자의 안전과 원활한 통행로 확보에 문제로 지적되었는데, 최근 도시는 지상의 설치물을 지하로 매설하여 깨끗한 가로 환경을 조성하는 추세이다. 반면 국도 ITS 사업은 지상에 여러 종류의 장치, 전력선, 통신선을 구성하면서 도시 경관을 해치는 요인으로 지적받고 있다. 이에 통신 선로의 지중화를 통해 도시 경관 정비가 중요한 과제로 인식되고 있으나, 가공 선로보다 2배 이상의 설치비용이 더 필요하다. 일본의 경우, 1986년부터 2차례에 걸친 전선류 지중화 계획을 관련 성 청, 전력 통신사업자 등과 연계하여 Cab System 방식으로 전선류 지중화를 추진하고 있는 실정이다. 본 논문은 우리나라에서 추진하는 국도 ITS에 적합한 광통신망의 지중화 방안을 제시한다.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.1
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• pp.127-136
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• 2008

In these days, frequency of constructions on e freeway are increasing according as growing of the importance of e road maintenance and the road management. Work zone on the freeway where vehicles pass with high speed needs control method of lane closure and construction equipment. Because there are seldom researches in domestic study about reflecting characteristics of domestic road, sometimes we have applied for foreign cases to our traffic circumstance but it is not proper to apply for standard of other countries in our cases. foreign nation has different country square, condition of road, and level of people mind. Therefore, this study shows traffic accident characteristics in freeway work zones in Korea. At first, this study collected traffic accident data which include for 3 years $2003{\sim}2005$ in the whole freeway in Korea and then divided the data to five parts - level of the accident, type of the construction work, type of the accident, reason of the accident, according to geometric. According to comparing with non-work zones accident, this study found traffic accident characteristics in freeway work zones in Korea and suggested some alternative ideas for safety of work zones.

• Journal of Korean Society of Transportation
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• v.31 no.1
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• pp.37-46
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• 2013

Lane closure in freeway work zone due to maintenance and repair of freeway facilities results in abrupt change of traffic flow. Sudden change of traffic flow results strong interactions among vehicles, and reduces capacity compared to the ordinary traffic condition. Such capacity reduction is likely to cause congestion, traffic queues, and economic loss cost. This study aims to determine the base capacity for a short-term freeway work zone that can be used to establish a work zone schedule in advance without any traffic impact. First, the research collected detector data and schedule data of road works on all freeways in Korea. Second, the research determined 23 study sites finding the capacity values of work zone after matching two kinds of data. All study sites had varying characteristics regarding traffic flow being adjacent to work zone during road works. The capacity values were reviewed in terms of lane closure configuration, the types of work, and design speed. Finally, research proposed capacity values for a short-term freeway work zone with the design speeds of 100 kph, 120 kph and 1,700 pcphpl, 1,750 pcphpl, respectively.

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.6
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• pp.798-807
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• 2021

In the era of the fourth industrial revolution, Maritime Autonomous Surface Ship(MASS) are expected to emerge in the shipping industry. There has been much active research on collision avoidance systems regarding MASSs, but most of it has focused on merchant ships. A study of collision avoidance systems in fishing vessels is also essential, because Maritime Autonomous Surface Ships will encounter all type of vessels. In this study, the minimum passage distance between small-medium-sized fishing vessels and other vessels was investigated for the Ship's domain analysis. Based on the AIS data of Busan port and the adjacent area, the separation distances of fishing vessels were analyzed. The results indicated that as the speed of fishing vessels increased, the distance increased from 4L to 8L, and as length of the fishing vessels increased, the distance decreased from 10L to 6L. It is believed that the results of this study can be applied in the future to collision avoidance models for MASSs that reflect the domain of fishing vessels.

• Smart Media Journal
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• v.12 no.11
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• pp.185-197
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• 2023

This study was conducted using text mining and network theory to extract useful information for application for occupancy and performance of permit tasks contained in the permit contents from the permit register, which is used only for the simple purpose of recording occupancy permit information. Based on text mining, we analyzed and compared the frequency of vocabulary occurrence and topic modeling in five regions, including Seoul, Gyeonggi, Gyeongsang, Jeolla, Chungcheong, and Gangwon, as well as normalization processes such as stopword removal and morpheme analysis. By applying four types of centrality algorithms, including stage, proximity, mediation, and eigenvector, which are widely used in network theory, we looked at keywords that are in a central position or act as an intermediary in the network. Through a comprehensive analysis of vocabulary appearance frequency, topic modeling, and network centrality, it was found that the 'installation' keyword was the most influential in all regions. This is believed to be the result of the Ministry of Environment's permit management office issuing many permits for constructing facilities or installing structures. In addition, it was found that keywords related to road facilities, flood control facilities, underground facilities, power/communication facilities, sports/park facilities, etc. were at a central position or played a role as an intermediary in topic modeling and networks. Most of the keywords appeared to have a Zipf's law statistical distribution with low frequency of occurrence and low distribution ratio.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.6
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• pp.4208-4215
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• 2015

Most of the administrative works are executed based on the address. Therefore, spatial information is an essential factor for administrative works. So far, many systems, which apply spatial information to administrative works, have been implemented. However, there is little approach to apply spatial information to road occupation permit works. In this paper, we introduce system implementation plan for applying spatial information to road occupation permit administrative works. System implementation plan includes work analysis, applying scenarios extraction, system function extraction, and datamart construction plans. First, work processes and activities are defined based on the analysis of work handbook. Also, activities are displayed in diagram. Second, scenarios applying spatial information to road occupation permit works are extracted. Third, we derive service functions for system, which realize work processes and applying scenarios. Finally, spatial information datamart construction plan is established. Proposed system implementation plan in this research includes application architecture and part of data architecture. For implementing the system, plan for hardware and software architecture should be studied.

• 한국정보통신설비학회:학술대회논문집
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• 2005.08a
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• pp.217-221
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• 2005

도시의 기능이 날로 커져가고 땅속 지하매설물은 포화상태에 이르렀다. 또한 시민들의 의식 수준이 높아가면서 도시에서의 굴착시공은 민원유발과 교통소통장애 문제로 날로 어려워지고 있는 것이 현실이다. KT에서는 무인 및 유인 통신구를 건설할 수 있는 장비를 이미 개발한바 있으며, 본 연구를 통해 도심지에서 보다 효율적으로 통신관로 ${\Phi}50mm,\;{\Phi}150mm,\;{\Phi}300mm$를 시공할 수 있는 장비를 개발하게 되었다. 도시는 복잡하기 때문에 비개착 시공에 있어서 시공 점용면적이 상대적으로 많을 경우 어려움을 겪게된다. 소구경 비개착 장비인 XS-300은 길이 1.45m 폭 0.8m 높이 0.97m 이며 중량은 700kg인 소형장비인 것이 특징이다. XS-300은 도심지에서 통신맨홀 터파기 부분을 압입구로 활용할 수 있으며 경제적인 비용으로 개착식 시공이 불가한 구간에 대한 인입관로 구성과 지하장애물 하월시공, 도로횡단 시공 시에 적합한 장비이다. 특히 타 시설물을 관통한 불량통신시설과 재해에 취약한 통신시설에 대해 안전하고 경제적인 비용으로 이설시공을 할 수 있으며 통신인프라 기초시설 안정화 및 품질고도화에 기여할 수 있을 것이다.