• Proceedings of the IEEK Conference
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• 2000.11d
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• pp.231-234
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• 2000

This paper has been studied a method that effectively displaying color image to monochromatic display such as PDA and movable-phone. Generally, the Floyd-Steinberg dithering algorithm has been used in this area and its' effectiveness were well known. But it shows some ugly patterns in white area and also shows some directionality in vertical and horizontal directions. To reduce those directionality, I suggest the error diffusion direction to be rotated randomly according to the bit value of the current position. This can also mitigate some ugly pattern in white area

• Journal of the Korean Institute of Telematics and Electronics A
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• v.30A no.7
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• pp.1-11
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• 1993

The bit error rates of DS/SSMA DPSK system with diversity and FEC channel coding in Rayleigh fading and log-normal shadowing channel are evaluated. Microscopic postdetection diversity and macroscopic selection diversiity are used to mitigate the effects of Rayleigh fading and log-normal shadowing, respectively. The numerical results show that the composite use of diversity and channel coding is very efficient for improving system performance compared to their respective uses.

• Journal of the Korean Home Economics Association
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• v.33 no.5
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• pp.197-209
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• 1995

A family life education program for caregiving families has been developed in order to help mitigate burden of those who provide caregiving for their older parents and to meet the needs of both caregiving families and parents. The program has been applied to a small group of people who have at least one living older parent. The effectiveness of the program has been evaluated by taking one pre-test and two post-tests. The test results suggest that the program has been effective in improving participants' knowledge on aging process, locus of self control, and relationships with parents.

• 한국가스학회:학술대회논문집
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• 2003.10a
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• pp.43-46
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• 2003

• Journal of Korean Institute of Industrial Engineers
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• v.41 no.3
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• pp.324-329
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• 2015

Though the supplier diversification is considered as a vital tool to mitigate the risk due to supply chain disruptions, there are results which show the optimality of the sole sourcing. This paper further generalizes the results to show that the sole sourcing is optimal under very mild conditions. Discussion on why the sole sourcing is optimal is given with the insight on the value of supplier diversification.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2002.11a
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• pp.15-18
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• 2002

Power supply technique for electrodeless lamps, especially Endura of Osram, is presented in this paper. The power supply uses a conventional power factor correction technique due to its proved performance. But in the inverter stage, resonant converter with parallel loading scheme is used to mitigate the variation of matching circuit characteristics by time varying load. Less performance but sufficient to predict future success compared to Osram's one is verified as a result of experiment of the prototype.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2004.11a
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• pp.13-16
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• 2004

Power supply technique for electrodeless lamps is presented in this paper. The power supply uses a conventional power factor correction technique due to its proved performance. But in the inverter stage, resonant converter with parallel loading scheme is used to mitigate the variation of matching circuit characteristics by time varying load. Experiment and performance comparison for both Endura md QL are performed and further study to commercialization are discussed.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2007.11a
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• pp.111-120
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• 2007

In this study, we consider the mechanism or the contract to mitigate inefficiency of individual and partial optimization in decentralized supply chain, which consist of a manufacturer and a retailer and In which the latter can increase demands by practicing her own promotional efforts. In that supply chain, we show to be able to achieve profit level in centralized channel by manufacturer's 'allowance' to retailer.

• Journal of the Korean Professional Engineers Association
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• v.38 no.6
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• pp.13-18
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• 2005

Emphasized in this paper are past experiences of disasters by l kinds in Korea and various problems facing the country compared to those of Japan, together with definition of disasters both natural as well as man-made. In chapter 3, R&D subjects performed or to be performed by various research organizations in Korea are briefly introduced, and necessity of active investment to prevent those disasters are strongly suggested on the part of government.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2000.10a
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• pp.235-238
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• 2000

In this paper the MUD(Multi-User Detection) schemes and turbo codes are utilized in DS-CDMA mobile communication systems. Theses schemes effectively mitigate the effects of MAI(Multiple Access Interference) and Rayleigh fading. Using Monte Carlo simulation, the performance of the proposed schemes is analyzed for various channel conditions.