• Journal of Internet Computing and Services
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• v.11 no.4
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• pp.1-10
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• 2010

As recent fusion industry and ubiquitous technology have grown fast, network contents, which require high load, are provided in various infrastructures and facilities such as u-city and smart phones. Therefore, it is anticipated that the playback quality of multimedia compared to network loads degrades dramatically due to the drastic increment of real-time reference of conventional high load contents (eg. multimedia data). In this paper, we improved the method of the traffic assignment based on MPP which elevated the playback quality of multimedia by assigning discriminately the possible traffic of MMS with TP coefficients. When the TP coefficient which combines content preference with media preference was applied to a real-time traffic assignment scheduler, the simulation results showed that the multimedia playback stream was assigned within the possible traffic of a server. The real-time scheduling algorithm was improved by using the TP coefficient that combines the time-dependent image contents and the weighted value of media preference. It was observed from the experiment that the loss of the possible traffic decreases to 3.91% and 3.88% for three and four clients respectively.

• Proceedings of the Korean Society for Quality Management Conference
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• 2010.04a
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• pp.418-424
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• 2010

우리를 둘러싼 경영환경은 시간, 공간, 무용지식등을 심층기반으로 하여 움직이고 였다. 이런 경영 환경속에서 하이테크와 하이터치 요인을 통해 고객에게 만족을 주지 못하면 개인이나 조직은 고객의 뇌리 속에서 사라지게 된다. 이런 배경으로 인해, 지역축제 역시 일반 축제와 차별적인 방향으로 개발하여 고객에게 가치를 제공해야 하는 전략을 강구할 필요가 있다. 본 연구에서는 지역 문화 콘텐츠를 암리고 지역 경제적 수익을 위해서 마련한 지역축제를 돌아 보는데였다. 또한 연구모형을 개발하고 지역축제의 서비스 품질 만족요인이 축제의 만족도와 재방문에 마치는 인과분석을 실시하는데 있다. 본 연구 분석결과, 서버스 품질 요인 중 행사진행 벚 수용태세 요인과 쇼핑 및 음식요인이 고객만족도에 유의한 영향을 마치는 것으로 나타났으며, 고객만족도는 향후 지역축제 참여의도에 유의한 영향을 미치는 것으로 나타났다.

• Magazine of the Korea Concrete Institute
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• v.28 no.3
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• pp.74-78
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• 2016

• Journal of the Korea Convergence Society
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• v.6 no.5
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• pp.1-8
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• 2015

The data of fair value hierarchy is expected to contain different degree of measurement error, information asymmetry, and information risk by the level of hierarchy. Thus, this study examines how hierarchy of fair value discriminately influences on companies' cost of capital. Through regression analysis of corporations listed from 2011 to 2014, it turns out that the regression coefficient of level 1 and 2 of fair value variable vary their rank by cost of capital types, while level 3 contains the highest regression coefficient for every cost of capital variable. In addition, further study of how the relevance between cost of capital and the fair value hierarchy gets affected by market risk management level and audit quality finds no consistent results. However, by analyzing the effect of coincident interaction through the convergence of market risk management and audit quality, when audit quality and market risk management level are high, the effect of relieving cost of capital of Level 3 gets the highest. In conclusion, fair value hierarchy data seems to affect discriminately on cost of capital by involved information risk, and the information risk could decrease by the level of market risk management and audit quality.

• Journal of the Korean Magnetics Society
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• v.17 no.6
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• pp.232-237
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• 2007

We have synthesized the low temperature sintered of Ni-Zn-Cu ferrite with nonstoichiometric composition a little deficient in $Fe_2O_3$ from $(Ni_{0.2}Cu_{0.2}Zn_{0.6})_{1+x}(Fe_2O_3)_{1-x}$. For low loss and acceleration of grain growth $TiO_2$ and $Li_2CO_3$ was added from 0.25 mol% to 1.0 mol%. The mixture of the law materials was calcinated and milled. The compacts of toroidal type were sintered at different temperature $(875^{\circ}C,\;900^{\circ}C,\;925^{\circ}C\;950^{\circ}C)$ for 2 hours in air followed by an air cooling. Then, effects of composition and sintering temperatures on the physical properties such as density, resistivity, magnetic induction, coercive force, initial permeability, and quality factor of the Ni-Zn-Cu ferrite were investigated. The density of the Ni-Zn-Cu ferrite was $4.85\sim5.32g/cm^3$, resistivity revealed $10^8\sim10^{12}\Omega-cm$. The magnetic properties obtained from the aforementioned Ni-Zn-Cu ferrite specimens were 1,300 gauss for the maximum induction, 4.5 oersted for the coercive force, 275 for the initial permeability, and 83 for the quality factor. The physical properties indicated that the specimens could be utilized as the core of high frequency range (involved microwave range) communication and deflection yoke of T.V.

• Communications for Statistical Applications and Methods
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• v.4 no.3
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• pp.617-628
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• 1997

시계열 자료의 변이상태(transition status)에 대한 판별은 여러 분야에서 연구되고 있다. 하지만 변압기의 진동신호와 같이 특정한 시계열모형을 적합시키기 힘든 자료는 변이 상태에 대한 판별이 쉽지 않다. 본 논문에서는 정상적인 변압기에서 발생하는 진동신호에 대하여 각 주기별 최대값, 자기상관계수 및 편자기상관계수 등의 경험적 표본분포를 연구한 후, 이를 이용한 관리도를 만들어 변압기 진동신호의 변이상태에 대한 판별을 하였다. 이 방법은 품질관리의 관리도 이론을 시계열자료에 응용한 것으로 비정상적인 변압기 진동신호의 판별에 만족스러운 결과를 가져왔다.

• The Journal of the Korea Contents Association
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• v.18 no.11
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• pp.581-593
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• 2018

The purpose of this study is to examine the effect of the medical service quality of the nursing hospital on the inpatients' satisfaction, reuse intention and to verify the mediating effect of the inpatients' satisfaction. The subjects of this study were 255 male and female inpatients in Hiroshima in Japan. The collected data were used as a model of path coefficients obtained through analysis of covariance structure and hypothesis test. As a result of verification, level of medical team and medical service, reception, facility and fee of the medical service quality of the nursing hospital perceived by the inpatients showed a statistically significant positive correlation with the inpatients' satisfaction. The inpatients' satisfaction showed a statistically significant positive correlation with their reuse intention. The level of medical team and medical service, reception, facility and fee of the medical service quality of the nursing hospital perceived by the inpatients shows a statistically no significant positive correlation with the reuse intention. But, they show a statistically significant positive correlation with the reuse intention with the mediating effect of the inpatients' satisfaction. Finally, the result of this study is to confirm the effect of the medical service quality on the inpatients' satisfaction, reuse intention of the nursing hospital. In this process, it is meaningful to verify the role and function of medical service quality of the nursing hospital.

• Journal of the Microelectronics and Packaging Society
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• v.10 no.1
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• pp.51-56
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• 2003

Microwave dielectric properties of the $MgTiO_3-CaTiO_3$ ceramics were investigated for GPS antenna fabrication. (1-X) $MgTiO_3-X CaTiO_3$ ceramics with X=7 mol% sintered at $1400^{\circ}C$ exhibited can be dielectric constant of 20.6, the quality factor of 52,500 and the temperature coefficient of resonant frequency of -1.5 [ppm/$^{\circ}C$]. The results of $0.93MgTiO_3-0.070CaTiO_3$ ceramics with $P_2O_5$/ 0.6 wt% sintered at $1250^{\circ}C$ exhibited can be dielectric constant of 21, the quality factor of 58,000 and the temperature coefficient of resonant frequency of 2.6 [ppm/${\circ}C$]. The size, insertion loss, center frequency and band width of GPS antenna were $20.5{\times}20.5{\times}6[mm]$,-10(dB) and 1575.42(MHz) respectively. The insertion loss, center frequency and band width of the fabricated GPS antenna were -11 (dB), 1579(MHz) and 22(MHz) respectively. The center frequency was higher than design result, but other characteristics of GPS antenna were similar to the results of design result.

• Journal of Korean Society for Quality Management
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• v.13 no.2
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• pp.48-55
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• 1985

This paper intends to decide the optimum OC curves and to find the minimized ${\alpha}$, ${\beta}$-risk based upon the Linear Cost Model (L.C.M.) for the destructive or nondestructive acceptance sampling inspection plan. For the solution from the L.C.M., we assume the uniform distribution as a Prior-distribution and use numerical analysis by computer.

• Journal of Korean Society for Quality Management
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• v.7 no.1
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• pp.26-34
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• 1979

This paper intends to decide the optimum OC curves and to find the minimized ${\alpha},{\beta}$-risk based upon the Linear Cost Model (L. C. M.) for the destructive or nondestructive acceptance sampling inspection plan. For the solution from the L. C. M., the author used the prior-distribution on some assumptions.