• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.113-113
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• 2017

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.1641-1649
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• 2011

Dynamic response of high-speed railway bridges is important due to the possibility of resonance from continuous and repeated action of high-speed train running. The designer's decision and application affect the result of dynamic analysis significantly, therefore guideline for dynamic analysis is required. On the purpose of the selection of resonable model for dynamic analysis, this study investigated load distribution effect.

• Journal of Satellite, Information and Communications
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• v.8 no.4
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• pp.1-5
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• 2013

CR(Cognitive Radio) technology is maximized frequency reuse using unused frequency band. Conventional cooperative spectrum sensing has fixed false alarms. so all cooperative user has equal threshold. This problem is caused degradation of detection probability. so we propose and analysis the system model that false alarm differential setting through CSI(channel state information) for resonable threshold. Simulation results show improvement of detection probability.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.12 no.10
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• pp.950-961
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• 2000

The objective of this study is to develop optimal alternative selection model for renewing building equipments system. Cost Breakdown Structure of LCC in HVAC systems are deduced from resonable data and factors. As for Cost Breakdown Structure of LCC in HVAC system, pertinent level, title, CBS number, and block number are determined efficiently. Especially, in addition to current cost factor, it is possible to make Cost Breakdown Structure using present worth method more clear. A model of POWER LCC ver 1.0 used to analyze primary cooling system, heating system, and air conditioning system are POWER LCC ver 1.0_/sub SYSTEM/ : C1+ C2- C3+ C4+ C5+ C6+ C7±C8+ C9- C10/sub -1/+ C10/sub -2/+ C10/sub -3/, and is implemented with consideration of Cost Breakdown Structure and their summation using present-worth method. It is programmed with one of scientific languages, MATLAB 5.3.

• Journal of Korean Society for Geospatial Information Science
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• v.14 no.1 s.35
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• pp.29-36
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• 2006

In the process of location selection, it is assumed that transformer substation socially recognized as a dangerous facility require especially more rigorous and resonable process. This paper implements suitability analysis for optimum location selection of transformer substation in southern Gyeonggi province using AHP(Analytic Hierarchy Process) and spatial analysis of GIS in terms of safety, national land use, economical efficiency and environment preservation. To do this, necessary data from 1/5,000 digital map are extracted a s raster format for suitability analysis and a field investigation also was done. In the procedure of site selection, three candidate zones with 1.5km radius were selected for the whole research area and then through field survey low transformer sites were selected from candidate zones. In the last the appropriateness of selected sites was evaluated. The results of the suitability analysis showed that the first candidate site satisfied the location condition best and other candidate sites generally showed good location condition.

• Korean Institute of Interior Design Journal
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• v.13 no.5
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• pp.39-47
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• 2004

In modem days when architectural materials have grave impacts on overall design expression, materials for architecture, especially finishing materials have become the most essential elements for the design expression, as architectural space and form have been. This study closely verifies the concept of tensity analyzed in preceding studies by quantifying it through experimentation and questionnaire, and suggests possible alternatives which verified concept of tensity applies into the architectural design. It was examined how architects consider the finishing materials through a questionnaire. With a questionnaire, the possibility of quantificative analysis for tensity is evaluated by SPSS program. Moreover, a questionnaire about the social image that the architectural finishing materials have was also conducted. This questionnaire results In the actual methods to apply quantificated psychological tensity and social images into the architectural design and recommends better plan to select finishing materials for each spacial function and usage, Due to the great influence of social images in design expression, the application mechanism of the tensity should follow the general and individual principles together. With the tensity figure and application of social images we can find more resonable method for material selection.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.50 no.4
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• pp.180-187
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• 2001

This paper proposes an efficient evolutionary programming algorithm for solving a generation expansion planning(GEP) problem known as a highly-nonlinear dynamic problem. Evolutionary programming(EP) is an optimization algorithm based on the simulated evolution (mutation, competition and selection). In this paper, new algorithm is presented to enhance the efficiency of the EP algorithm for solving the GEP problem. By a domain mapping procedure, yearly cumulative capacity vectors are transformed into one dummy vector, whose change can yield a kind of trend in the cost value. To validate the proposed approach, this algorithm is tested on two cases of expansion planning problems. Simulation results show that the proposed algorithm can provide successful results within a resonable computational time compared with conventional EP and dynamic programming.

• Journal of Korean Ophthalmic Optics Society
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• v.1 no.1
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• pp.73-84
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• 1996

Satisfactory for children's spectacles fitting can only be achieved with the resonable selection and assortment of frames of different pad shapes, size, materials, the general property of sample frame are flexibility for the temple. Loughness for bridge and variety for the length of temple, a selection of the lens is chosen usually by the characteristic of the power, safty, size and so on, it will be comport fit of frame controlled the hight and width of pad and angle of pad between the nose side, frontal angle of pad will be determinded that whether a frame may be capable of providing a comport fit. An important part of the fitting of spectacles is the final adjustment before the wearer takes them away, and also their continued adjustment to maintain the optimum comport and lens efficiency. It is suggested that spectacle adjustment is essentially a practical art that can only be acquired by continual practice.

• The Journal of the Acoustical Society of Korea
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• v.18 no.2
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• pp.66-76
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• 1999

This paper proposes that can take at high speed the information of binocular disparity with moving translational and forward stereo camera to the extent that does not occur the problem of a correspondence point. It shows that in case of stereo vision with translational motion, can take the information of binocular disparity being devoid of error and putting high confidence in, and that in case of stereo vision with forward motion, can take the horizontal component which can not be detected in common stereo vision. Besides, the stereo vision can be done at high speed due to being bright and small a correspondence point comparing not to do, because a correspondence between right and left images is previously limited. But there are problem that a resonable information of binocular disparity can not be taken, if the vicinity of center of image is in accord with the region of occlusion in stereo vision with forward motion.

• Journal of the Korea Fashion and Costume Design Association
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• v.13 no.4
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• pp.51-67
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• 2011

The purposes of this study were to segment male university students on the basis of benefit sought in clothing, and to investigate knitwear image preference and purchasing behaviors of each segmented market. The research method was a survey and subjects were 249 male university students in Daejeon and Chungnam province. The questionnaire consisted of measurement items for benefit sought in clothing, knitwear image preference, knitwear purchasing behaviors, and subject's demographic attributions. The data were analyzed by Cronbach's ${\alpha}$, factor analysis, cluster analysis, ${\chi}^2$ test, ANOVA and Scheffe test. The results were as follows. First, male university students were segmented into 6 consumer types (practicality pursuit, individuality pursuit, comport pursuit, brand pursuit, social status pursuit, and unconcern type) by benefit sought in clothing. Second, male university students generally preferred dandy image and causal image, however, brand pursuit type more preferred trendy image, and practicality pursuit type more preferred active image than other consumer types. Third, the segmented markets showed many differences on knitwear purchasing behaviors. On clothing selection criteria, practicality pursuit type considered resonable price as important, whereas brand pursuit type considered brand reputation. On fashion information source, individuality pursuit type considered store display and other people's clothing, while unconcern type considered advice from friend and family. On main purchasing place, individuality pursuit type more used speciality store with no brand, whereas brand pursuit type more used department store and brand store than other consumer types. The results of this study supported that benefit sought in clothing can be useful as an effective variable for market segmentation.