• Journal of the korean Society of Automotive Engineers
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• v.16 no.2
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• pp.33-44
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• 1994

• Journal of the Korean Society of Costume
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• v.46
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• pp.109-132
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• 1999

The purpose of this research is to get basic data for R&D to activate and popularize the Practical Korean Costume. This research was carried out by theoretical study with literature and practical study with development of model based on the result of questionnaire. 1. In theoretical study the concept of 'Korean-image' of modern costume as well as 'Modernization' of Korean traditional costume has been suggested and 'traditional beauty of costume' which can be evaluated generally was considered. 2. In practical study the results of the questionnaire showed the objective numerical value of the element of Korean design which is firmly recognized by korean people. With the results the methods of development and composition of design have been suggested in the harmony of 'traditional' and 'modern' through the modernization in terms of form composition fabric color. It is expected that development direction of Practical Korean Costume which can be settled in everyday life with more independent cultural identity should be suggested. Additionally the research results will be useful for merchandise planning of costume industry.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2002.10a
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• pp.65-69
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• 2002

In order to practicalize high precision centerless grinder for machining the ferrule, its feeding system is designed and tested. For satisfying the desired diametric tolerance and cylindricity of the ferrule, the feeding system is designed to have relatively high axial stiffness of 600 N/$\mu\textrm{m}$, high angular motion accuracy of 0.5 arcsec/mm in yaw direction and minimum resolution of 0.05 $\mu\textrm{m}$. A prototype of feeding system is built up with hydrostatic guideway and ballscrew. A linear scale with 0.05 $\mu\textrm{m}$ of resolution is used for position feedback. Experimental results show that the feeding system has the infinity of axial stiffness within the range of 1000 N and 0.3 arcsec/mm of yawing error. Also the feeding system shows obvious step response against 0.05 $\mu\textrm{m}$/step command without the lost motion or backlash. Although the vertical stiffness is reduced to 440 N/$\mu\textrm{m}$ by the elastic deformation of rail, it is good enough to use for machining the ferrule. From above, it is confirmed that the feeding system is applicable to centerless grinder for machining the ferrule.

• Journal of the Korean Society for Railway
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• v.19 no.3
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• pp.373-379
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• 2016

Development of a train wireless signal control system using LTE-R technology is expected to have a great ripple effect to the existing signal control market. To make inroads into the international market, it is an urgent issue to practicalize the train wireless signal control system. Because it will require a huge budget to commercialize the wireless signal control system, it is necessary to analyze the feasibility beforehand, with a consideration of the domestic and foreign marketability and the impact on related industries. This study investigated the effect of the practicalization of train control system on future railway and national industrial sectors. We suggested the establishment of a framework for economic feasibility analysis, one that can provide criteria for opportunistic valuation. We also verified this framework through case analysis.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.138-145
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• 2009

Humanism connotes dignity and esteem with the essential idea of human and more human. This paper has conducted a inquiry of the understanding about human and humanism represented by visual image of film. Especially, this study investigated the way to adhere to reflective attitude about human and society. It is based on theoretical discussion of formalism and auteurism and analyzed the way of constructing time-space structure of (by Lars von Trier) which is known the typical formalism film. According to the findings, appeared to appropriate the ocularcentrism aesthetic to film form and give the self-regulation to definite the idea of film art through picturesque imagination of dramatic stage. Such a result means that it converts the filmic time-space to the virtual things and practicalize the classification of the ethical doctrine of innate goodness and innate sin of human and the definition of humanism. Also it means formalism film overturns the existing institutional mode of representation.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.10a
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• pp.1033-1036
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• 2013

A study about collision resolution is needed because huge file, video and multimedia information are transmitted to wireless LAN. CSMA/CR protocol guarantees fairness, but doesn't consider QoS. To practicalize CSMA/CR protocol in saturation fully-connected single hop network environments, this paper proposes method of collision compensation. previous CSMA/CR protocol chooses CR Slot only considering fairness, but this paper chooses front CR Slot for compensation of collision to station experiencing collisions. The station transmits jam signal and has channel priority of transmission. So transmitting efficiency and successful transmission probability rise. This proposed simple method can offer benefit to station experiencing collisions without additional hardware cost.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3632-3637
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• 2009

In this paper, we describe the performance results of the field installation test which is required to practicalize the single-phase MJ81 Switch Point Machine. This product has passed the certified test through performance improvement of driving parts in order to use 3 phase MJ81 Switch Point Machine, which is localized by taking over technology from Alstom and Cogifer when constructing Seoul-Busan rapid-transit railway, without change of the electrical equipment at track-side in domestic existing lines which single-phase 220V is used. KRRI and Samsung SDS have localized the single-phase MJ81 Switch Point Machine to improve the speed and safety of the conventional lines through the existing railway technology development project. For practicalization of this, we should, however, verify the performance through not only field installation test in real lines but also interface test with the interlocking. In this paper we verify the practicality of the domestic single-phase MJ81 Switch Point Machine through analysis on the performance result of the field installation test as well as the research contents for this test. Thereby, in Feb 2009 we have received an order from the Korea Rail Network Authority and are currently installing the single-phase MJ81 Switch Point Machine.