• 한국태양에너지학회:학술대회논문집
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• 2012.03a
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• pp.506-510
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• 2012

This study suggested an improved algorithm of urban energy consumption estimation on the urban planning stage which concerns calculation accuracy. The results are as follows. (1) Urban energy consumption was estimated and managed per unit space using E-GIS DB which contains facility information per mesh. (2) Urban energy consumption was reflected by the urban facility classified and standardized by the characteristics of energy use. (3) Calculation accuracy of energy consumption was approached by separately suggested as summer algorithm reflecting urban heat island on summer energy use and winter algorithm reflecting heating system normally used in Korea.

• 한국태양에너지학회:학술대회논문집
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• 2009.11a
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• pp.181-184
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• 2009

This study aimed at framing alternative urban planning scenarios reflecting urban planning factors, performing urban climate simulation and evaluating eco-friend and low energy characteristics of each scenario on the viewpoint of urban temperature and energy savings on the target of the costal city including Haeundae District in Busan The results are as follows. 1)The fact that urban higher temperature is approximately 2.5 times higher in the building constructed area than whole urban area was represented severe higher temperature phenomenon in the built-up area. Ground greening, water scenario and soil scenario could be expected peek air temperature alleviating effect in order. Especially water scenario had significant effect(maximum $2.5^{\circ}C$) on lowering of air temperature.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2008.04a
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• pp.608-613
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• 2008

The society increased interest because the scale and size of disaster is getting gradually large. However, urban hazard mitigation management of existing system had many problems about prompt hazard mitigation (prevention, provision, confrontation, restoration) in the event of disaster. For these reasons, this paper presents ubiquitous urban hazard mitigation management system of new ideas which are fusion ubiquitous technology and urban hazard mitigation management system to solve the existing system problems.

• Journal of Korea Port Economic Association
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• v.22 no.1
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• pp.87-103
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• 2006

The aim of this paper is to establish the evaluation system of improving urban logistics using the QFD(Quality function Deployment) model which can facilitate to grasp the improving degree of realizing the system conforming to the relationship of all process and the process improvement. At the first stage, the established system through the QFD method will be used to evaluate and diagnosis the level of urban logistics in Cheonbuk District. The second stage is to investigate the important components that can make prompt improvement of urban logistics. Then, the sensitivity analysis is to be performed and the degree of improving urban logistics will be presented according to the rising degree of the relevant components.

• Proceedings of the KIEE Conference
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• 1997.07a
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• pp.370-372
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• 1997

본 논문에서는 철도차량용 견인전동기의 열적, 기계적, 전기적 열화 및 환경열화 등의 절연열화 메카니즘에 대해서 검토하였으며, 전동기 주절연물의 전반적인 열화경향 파악과 국부적열화 검출을 위해 현재 적용되고 있는 절연저항, $tan{\delta}$, 직류성분, 정전용량 판정 및 부분방전 시험 등의 각종 절연진단 시험법과 최종적인 교류전압파괴 강도와의 상관성을 추정하는 진단기술의 현황과 그 유용성을 소개한다.

• Proceedings of the KSR Conference
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• 2006.11a
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• pp.113-122
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• 2006

To investigate the adequacy of maglev train system to future urban transport environments, first we derived minimum necessity requirements of the new-transit system by analyzing the issues in the urban transit management and new needs of transportation customers. Then the conformity of Maglev train to the requirements was examined. With respect to this adequacy analysis, policy directions and agenda of the making practical use of urban transit Maglev system' is proposed.

• Journal of Environmental Impact Assessment
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• v.7 no.1
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• pp.109-116
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• 1998

As of July 1997, the registered number of automobiles exceeded 10 million and Korean auto industry produced 2,850,000 cars. Many environmentalists warn that the passenger cars are not sustainable urban transportation system in large cities. The cars produce about 80% of air pollutants, and consume 30% of petroleum imported. For the past 30 years the administration increased the road system, but the length of road per car is decreased from 813m in 1965 to 9m in 1995. The cost of traffic congestion was estimated to be \14.7 trillion in 1996, and is feared to increase without changing the present transportation system. The undesirable impact of cars include the casualties from traffic accidents, insurance loss, and separation of human relatioships. To construct sustainable urban transportation system, three principles should be followed. The first principle is to make the urban streets walkable for the people. The second principle is to encourage bicycling. Roads and traffic systems should be designed to let bicylces travel safely. The third principle is to supply more buses and construct integrated transportation system based on buses. The subway system is too expensive to construct and without the support of a well-organized bus system it may not work efficiently. The Brazilian city of Curitiba has constructed a very efficient bus system only with 1/80 of the estimated cost of subway system. The car-oriented transportation system does not seem to be an envrironmentally sustainable transportation system in most of the Korean cities.

• Journal of the Korean Association of Geographic Information Studies
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• v.14 no.4
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• pp.172-181
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• 2011

Recently, Urban has been innovated through u-City and Smart City. Urban facility management system is developing using the latest IT technology for real-time monitoring and prevention. In this paper, we propose an UOID(Unique Object IDentification), a standard location-based ID system for urban facility object and develop the UOID service system based on network for innovation of urban facility management system. The system has been tested through Test-bed for connectivity and stability. We wish that the proposed UOID and network service system manages u-City facilities effectively and also provides various ubiquitous services to the citizen, one of the integrate service of u-City platform.

• Journal of Korean Tunnelling and Underground Space Association
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• v.19 no.1
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• pp.11-27
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• 2017

The road network system of major domestic urban areas such as city of Seoul was rapidly developed and regionally expanded. In addition, many kinds of life-lines such as electrical cables, telephone cables, water&sewerage lines, heat&cold conduits and gas lines were needed in order for urban residents to live comfortably. Therefore, most of the life-lines were individually buried in underground and individually managed. The utility tunnel is defined as the urban planning facilities for commonly installing life-lines in the National Land Planning Act. Expectation effectiveness of urban utility tunnels is reducing repeated excavation of roads, improvement of urban landscape; road pavement durability; driving performance and traffic flow. It can also be expected that ensuring disaster safety for earthquakes and sinkholes, smart-grind and electric vehicle supply, rapid response to changes in future living environment and etc. Therefore, necessity of urban utility tunnels has recently increased. However, all of the constructed utility tunnels are cut-and-cover tunnels domestically, which is included in development of new-town areas. Since urban areas can not accommodate all buried life-lines, it is necessary to study the feasibility assessment system for utility tunnel by urban patterns and capacity optimization for urban utility tunnels. In this study, we break away from the new-town utility tunnels and suggest a quantitative assessment model based on the evaluation index for urban areas. In addition, we also develop a program that can implement a quantitative evaluation system by subdividing the feasibility assessment system of urban patterns. Ultimately, this study can contribute to be activated the urban utility tunnel.

• Proceedings of the KIEE Conference
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• 2003.07b
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• pp.1288-1290
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• 2003

The maintenance CALS system for car of urban transit is a part of standardization and development of urban transit system, and We have been performed the establishment of maintenance CALS system from 2001 to 2005. The RAMS for management computerization system are utilized in a variety of CALS system for user's convenience and safety in maintenance. Ever since its inception though, the urban transit has searched for ways to improve reliability, availability, maintainability and safety of the railway subsystem. In this paper, This system include RAMS(reliability, availability, maintainability and safety) and expert system of the vehicles shall be enhanced in the future.