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이용주,김영주,박다진,Danny Liew,이용주 한국보건의료기술평가학회 2017 보건의료기술평가 Vol.5 No.2
Objectives: Many studies are being conducted around the globe to assess the feasibility of multiple criteria decision analysis (MCDA) in health technology assessment (HTA). In this review, we assessed MCDA methodologies and decision criteria used in HTA. Methods: A total of 35 studies published from 2005−2015 that applied MCDA in HTA were selected and the following areas were reviewed: 1) Context of the decision making: decision making setting, level (e.g., micro, meso, macro), and the assessment target (e.g., healthcare policy, drugs, health program, medical test, medical device, treatment, or surgery), 2) MCDA methodology: type of MCDA technique, weighting method, criteria elicitation method, and the participants, 3) Decision criteria: feasibility, social/population impact, intervention related factors, patient/individual-centered values, budget impact, and quality of evidence, and 4) Transparency of the decision making process: the process was considered transparent if the study disclosed the weight of each criterion, the formula used to calculate the final score or if the weighting/calculation method was well explained to the level considered acceptable by the authors. Results: Of the studies reviewed, 63.9% used MCDA for decision making at a national level, and the type of HT being assessed was most often national/regional healthcare policy (44.1%). The most prevalent method of weighting was direct weighting using scales (40.0%). Most of the studies (80.0%) conducted group discussions for criterion selection, and among the criteria, intervention-related factors such as safety and efficacy (93.9%) were most often observed, followed by budget-impact (81.8%) and patient/individual-centered values (81.8%). Conclusion: Substantial demands for incorporation of patient-centered values into the current HTA process were observed. Additionally, MCDA may be a useful tool in incorporating such values to the HTA decision framework, but unresolved methodological issues remain. Further assessment on the application of MCDA in HTA should be conducted for Korea-specific settings.
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이용주,강나영,차지은,이지민,이도영,김형진 한국펄프·종이공학회 2023 펄프.종이기술 Vol.55 No.4
Fractal geometry is characterized by its similarity and hierarchical organization. It exhibits a hierarchical structure composed of elements that share the same shape but vary in size, ranging from the largest to the smallest. In this study, the fractal-dimension values of a paper and paperboard were calculated, which reveal distinct properties of fractal dimensions in contrast to Euclidean geometry. The variogram method was employed to characterize the surface roughness profiles using fractal-dimension analysis to obtain the fractal dimensions of paper products. A decrease in the fractal-dimension value was observed following the coating process. These findings imply the promising applicability of fractaldimension analysis for evaluating the effects of postprocessing techniques, including printing, coating, creping, and embossing. .
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카르복시메틸셀룰로오스의 치환도 분석을 위한 분광분석법의 적용
이용주,차지은,강나영,김재협,김형진 한국펄프·종이공학회 2023 펄프.종이기술 Vol.55 No.1
In this study, the degree of substitution of CMC (carboxymethyl cellulose) was calculated through a titration method, and the data were compared with the measured value of the degree of substitution measured by EDS (energy dispersive X-ray spectroscopy) and the degree of substitution measured by IR (Infrared spectroscopy), and the correlation was analyzed to calculate the degree of substitution of CMC more conveniently. In addition, by identifying the chemical properties of CMC according to the degree of substitution, we tried to provide basic data for the application of CMC in the future. When the degree of substitution of CMC analyzed through EDS analysis was compared with the result of the degree of substitution by the titration method, it was confirmed to have relatively high accuracy, but expensive equipment and remaining NaCl may affect the result. So, it was judged that commercialization may be somewhat difficult. It was easier to analyze the degree of substitution through IR analysis, and more accurate results could be expected than analysis through EDS. Using the Savitzky-Golay algorithm and PCA (principal component analysis), it was possible to identify CMC’s chemical properties and analyze classification according to the degree of substitution. Therefore, it is believed that the application of IR when analyzing the degree of substitution of CMC will simplify the investigation of the relationship between the structure, physical properties, and applications of CMC in the future. .
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이용주,김재협,차지은,강나영,김형진 한국펄프·종이공학회 2023 펄프.종이기술 Vol.55 No.2
The surface roughness and frictional properties of printing paper can significantly impact ink transfer and printability during the printing process. Therefore, the aim of this study was to investigate the surface characteristics of paper in relation to its physical and chemical properties. Surface characteristics were analyzed using profilometry, and the physical and chemical properties of the paper were evaluated based on fiber and filler properties. The results revealed a significant correlation between filler behavior and surface properties. Furthermore, the mean absolute deviation (MAD) as a parameter representing the absolute deviation from the mean value, indicated that the variability depending on the measurement conditions was relatively small in the evaluation of the surface characteristics. Therefore, it is expected that the application range will be wide in the future. .
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이용주 江南大學 不動産學科 1991 不動産學報 Vol.7 No.-
담보물권은 채권의 담보를 목적으로 하는 권리로서 그 권리의 성질상 다음과 같은 특성이 있다. 첫째 피담보물권이 존재하지 않으면 담보물권이 존재할 수 없고 피담보물권의 구분에 담보물권도 수반하는 「부종성」이 있다. 둘째 담보물권은 피담보물권의 전부의 변제가 있을때까지 목적물의 전부위에 효력을 미치는 「불가분성」이 있다. 세째 담보물권은 목적물이 멸실, 훼손하여 보험금 손해배상청구권, 손실보상청구권으로 변하는 경우에 이 보험금 손해배상청구권, 손실보상청구권 등이 위에 효력을 미치는 「물상대위성」등이 설정 되어 있다.
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