• Journal of the Korean Society for Railway
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• v.13 no.1
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• pp.119-124
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• 2010

Light rail is an electric railway system, characterized by its ability to operate single or multiple car consists (trains) along exclusive rights-of-way at ground level, on aerial structures, in subways or in streets, able to board and discharge passengers at station platforms or at street, track, or car-floor level and normally powered by overhead electrical wires. Depending upon the specific system, the light rail lends some major advantages to urban settings. The evaluation of light rail technology as a potential component of regional transit systems has been the subject of extensive studies throughout the country in the past decade. For the study, feasibility was defined as "the ability of an LRT system to achieve certain level of transportation market in comparison with other transportation alternatives." This paper describes the feasibility study to evaluate a proposed light rail development project. The minimum are those LRT systems that would met to make a project feasible for further evaluation.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.12 no.1
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• pp.28-42
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• 2013

Personal Rapid Transit(PRT) is a new unmanned transportation system using electricity. The purpose of the PRT is relieving the congestion of city traffic and connecting between inner city and airport, high-speed railroad. PRT requires to develop devices for the guarantee of safety and reliability. PRT as the mean of rail transportation must be equipped with control system for front rail sensing. Ultra Wide Band(UWB) radar system is suitable for PRT's detection because it has the advantage of low power consumption, low interference and high resolution. In this paper, an improved adaptive Constant False Alarm Rate(CFAR) algorithm is proposed and studied in various noise environments. The proposed algorithm improves performance in various noise environments compared to the Mean Level CFAR algorithms and other adaptive CFAR algorithms.

• Archives of design research
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• v.19 no.6 s.68
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• pp.15-20
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• 2006

Despite the SKM Duyree shop's potentials, such as residing over the Samsung-dong, gangnam-gu one of the premier locations in Seoul, and offering a large shopping store, the old 'SKM Dutyfree' symbol [image #2] has become the burden for a company due to its low-profile brand quality and lack of location advertisements. Therefore, first, we have agreed to acquire the popular brand word 'COEX' and replace "SKM Dutyfree" to "COEX Dutyfree", and second, the new visual image has been created in order to create a synergy of the urban-look and the location-information. Therefore, the visual identity design concepts have been utilized in order to achieve such goals; first, promote the existing COEX-image and metropolitan-esque image. Second, unify the international-metropolitan looks of the COEX-mall, hotel, shopping center, exhibition, and airport terminal with location information. Third, deliver the new identity-design [image #1] of the fresh look(compare to competing dutyfree shops) and dynamic images.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.178-182
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• 2012

PEAT(Procedure/airspace Efficiency Assessment Tool) evaluates the efficiency of the flight procedures designed by Procedure and Airspace Design Program, such as fuel consumption fight time, flyability, noise footprint and etc. For noise footprint analysis among the efficiency metrics, the input generation module for INM(Integrated Noise Model) was designed in this research. The INM input files shall contain the information about aircraft types, noise model, airport and runway configuration, number of flights, flight routes, and also should be satisfied with the exact file formats for input data, since INM is not originally executable with file inputs. Therefore, it has been designed to convert the input data given in XML file to DBF. In this paper, the design result of the module which has functionalities to generate appropriate input file for INM, and to convert and save the analysis results from INM, is presented.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.04a
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• pp.421-426
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• 2004

Increasing of the multinational corporation brought into the international multimodal Increasing of the multinational corporation brought into the international multimodal transport on the logistics environment. In case of Europe which have a great infrastructure, they are tried to develope a second of the silk road constantly. This paper emphasized the importance of international multimodal transport and proposed the model for northeast multimodal transport. For this research, we analyzed the multimodal transport system in Europe and north corridor of TAR. We are expecting economic effect of the route is including republic of korea and developed a model for connecting with sea, air and road. Actually, this research can not be enough data of numerical value for proving this effectiveness. but we developed and proposed a specific route of multimodal transport that was never suggested. Consequently, we established basic ground for comparing each transport route in the future research.

• Journal of Korea Port Economic Association
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• v.35 no.4
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• pp.51-66
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• 2019

In the global competition environment, companies are using international logistics centers located in ports and airports to reduce costs and improve logistics services through the rationalization of logistics networks. By examining how the characteristics of shipper companies affect the utilization of the international logistics center, this study aims to suggest implications for the desirable operation and utilization of the international logistics center. As a result, the factors that utilize the international logistics center were extracted into three main factors of visibility, addition, and responsiveness. The case of addition was found to be the size of the firm and the type of product being handled. The company's characteristics in terms of responsiveness were found to be product type. In addition, the variable affecting the willingness to use the international logistics center was the period of use of the logistics center.

• The Journal of Society for e-Business Studies
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• v.16 no.4
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• pp.87-96
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• 2011

The importance of the security management system for the aviation infrastructure cannot be overemphasized. What is especially important on the security management system for it is the assessment that is detaild and systematic. This article presents a framework based on a Hanulcha-type security management system model for a Information security of the Aviation infrastructure. This system checks, estimates and analyzes the goal of security with effect, especially in case of the security-accident on the aviation infrastructure because this system model gives the integrated security assessment method.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.137-138
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• 2017

The sea of the Korean peninsula has various marine changes, including naval vessels, naval operational aircrafts, air force fighters, coastal airports and airfields. In particular salt directly affected by the marine environment, equipment operating in a high temperature / high speed as the gas turbine is the high temperature corrosion(Hot Corrosion) caused by sulfur components and salinity of the fuel used. When the height of the demister (air intake) is less than 7m, the salinity entering the sea increases and the corrosion increases rapidly. In addition, the weapon systems operating in the East Sea than the West Sea showed a 17% increase in corrosion rate due to the relatively high salinity scattered by saline, wind, and wave. In order to minimize the salinity inflow, it should be operated at more than 13m from the sea to minimize rapid hot corrosion.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38A no.9
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• pp.765-772
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• 2013

In this paper, we studied the path loss model of Air Traffic Control(ATC) telecommunication radio channel at the Incheon International Airport(IIA) concourse area. We measured wave propagation characteristics on the two frequencies among VHF/UHF channel bands. The transmitting site radiated the Continuous Wave(CW). The propagation measurement was taken using the moving vehicle equipped with receiver and antenna. The transmitting power, frequency, and antenna height are the same as the current operating condition. The path loss exponent and intercept parameters were extracted by the basic path loss model and hata model. The path loss exponents at Concourse area were 3.1/3.13 and 3.01/3.38 respectively in 128.2MHz and 269.1MHz. The deviation of prediction error is 2.77/3.17 and 4.01/3.66. The new path loss equation at the Concourse area was also developed using the derived path loss parameters. The new path loss model was compared with other models. This result will be helpful for the ATC site selection and service quality evaluation.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.18 no.6
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• pp.197-204
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• 2004

The temporary power installations are to be used for temporarily supplying power during work at construction sites and have a minimum of protective devices to differ from permanent installations. There are many risk factors caused by loose working environments, deterioration of installations at construction sites. To analyze risk factors of temporary power installations, the investigation and the questionnaire were carried out side by side for power receiving system patch and panel boards, and were performed by researcher, the related expert, engineer of Korea Electrical Safety Corporation all over the country. The objects were variable such as an airport, an apartment, a municipal playground As a result, there are many problems such as a bad lock, poor protection of charging department. Solvable methods are improvement of the related regulation safety education, safety check and so on. In the future, the analytical data can be applied to prevent the electrical shock at construction site, and can be used to stabilize electrical installations.