• 대한교통학회지
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• 제4권2호
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• pp.15-35
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• 1986

As the population of persons and automobiles rapidly grows, parking problems also grow in large cities of Korea. The purpose of this paper is to first grasp the status of parking facilities and characteristics in large cities of Korea; and introduce new directions of CBD parking policies in north America cities: and finally recommend the adequate parking management strategies and tactics for improving parking problems in Korea. For this purpose, field survey for parking inventories, patrol survey for parking usage as observed demand and drive interview survey for parking behavior were conducted. Compared with the parking characteristics and polices of foreign cities, many differences of characteristics were found, and existing parking management policies, which should be improved, were identified. Five categories of parking management strategies were set on; a) Reasonable control of CBD parking demand, b) securing of the public parking facilities c) Promotion of privately operated parking facilities d) expansion of financial resources for parking facilities construction and e) Improvement of existing parking management system. And actural seventeen tactics to attain the above strategies were recommended.

• 한국농공학회논문집
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• 제50권4호
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• pp.51-58
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• 2008

Unit costs for energy production in bioenergy facilities are dependent upon both fixed cost for facility construction and operational costs including biomass feedstock supply. With the increase of capacity, unit fixed cost could be decreased while supply cost tends to increase due to the longer transportation distance. It is desirable to take into account biomass availability in planning bioenergy facilities. A cumulative curve relationship was proposed to relate biomass availability and cumulative products of biomass amount and transportation distance. Optimum size of gasification facilities was affected by collection cost, biomass cumulative relationship. Based on biomass availability of Icheon-City, optimum sizes were about $400kW_{th}$ for gas production, and about $200kW_{el}$ for power generation. Unit cost of bioenergy production could be substantially reduced by reducing collection cost through supplying biomass from diverse sources including land development areas where significant amount of waste wood is generated. When planning bioenergy facilities, however, biomass availability and spatial distribution are key factors in determining the size of capacity.

• 대한교통학회지
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• 제20권2호
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• pp.189-190
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• 2002

• 교통기술과정책
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• 제9권1호
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• pp.57-66
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• 2012

• 교통기술과정책
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• 제11권6호
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• pp.50-56
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• 2014

• 교통기술과정책
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• 제13권5호
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• pp.41-47
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• 2016

• International Journal of Internet, Broadcasting and Communication
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• 제7권2호
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• pp.109-112
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• 2015

The Korean electric railway is growing rapidly such as speed of 300km/h in high speed section and 230km/h in the conventional railway section. But, power supply failure occurs because of loss of contact, defective catenary system and high speed vehicle. Therefore preventive maintenance way based reliability has been applied. Typical example is the facility inspection method using trolley inspection system. But it is required differentiated inspection method to prevent problem such as inspection errors. In this paper, a study on the trolley sliding condition inspection system using monitoring techniques is performed for performance enhancement of inspection system. It proposed the efficient maintenance method through monitoring the deviation and height of contact wire after installing inspection system on the top of train which operates in the metropolitan area. Inspection errors were decreased by virtually monitoring the video of faulty facilities. Also those facilities were identified through the impact sound analysis and tests at the main catenary section.

• 한국ITS학회 논문지
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• 제10권5호
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• pp.60-70
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• 2011

전기버스를 대상으로 교통-전력-시설 통합 정보통신 네트워크 통신방식을 선정하기 위하여 최신기술 동향과 정확성, 안정성, 경제성의 선정요인을 기준으로 차량위치검지 및 무선통신방식을 GPS, CDMA, WLAN 방식으로 설계한다. 또한, 효율적인 연계를 위하여 대안별 주요 특징을 검토하고, 방안별 기술적 난이도와 정책적 행정적 난이도 및 비용타당성의 선정요인을 기준으로 Spoke & Hub 연계방식, 즉, 교통융합충전센터와 교통센터, 스마트 그리드센터를 각각 연계토록 연계방안을 수립한다.

• 전기학회논문지P
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• 제67권2호
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• pp.70-74
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• 2018

Social infrastructure such as production, transportation, gas, and electrical facilities would be degraded according to time and those facilities might need more maintenances, repairing, and management as time goes by. Especially, in the case of a power transformer, it is important to diagnose the transformer in order to avoid malfunction and failure because they could cause enormous damage. The economic as well as technical aspects of a transformer management must be considered while it is operated. Therefore, the concept of asset management should be applied as an advanced method of transformer management. Asset management refers to a series of processes to make a plan of maintenance and conservation of a power transformer considering the soundness, investment cost, and importance of equipment. It is important to apply the asset management considering calculation of a lifetime loss. In this paper, the lifetime loss calculation method of asset management for a power transformer is suggested.

• 한국ITS학회 논문지
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• 제22권1호
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• pp.16-24
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• 2023

교통사고 잦은 곳 개선사업을 통하여 사고가 크게 감소하고 있다. 이러한 결과는 안전 시설물이 큰 역할을 하고 있다. 교통사고는 여러 가지 원인과 다양한 환경적인 요소로 인하여 발생하게 되는데, 한가지 안전시설물 혹은 기준 없는 시설물 설치로는 개선효과를 얻기 어렵다. 따라서 본 연구는 두 가지 안전시설물의 조합으로 사고유형별 개선효과를 분석하였고, 도로종류, 도로형태, 교통량 등으로 환경적인 요소도 포함하여 특정 지점에 맞는 안전시설물 조합을 예측하는 방법을 제시하였다. 예측은 단순 분류가 가능한 예측 모델들을 결합하여 하나의 강한 예측 모델을 만드는 XGBoost 기법으로 선정하여 진행하였다. 이를 통해 최종적으로 현재까지 교통사고 잦은 곳 개선사업을 통해 긍정적인 효과를 가져다 준 안전시설물과 개선이 필요한 지점에 설치될 안전시설물을 같이 도출하여, 안전시설물 효과분석과 향후 설치지점에 대한 예측방법을 제시하였다.