• Title/Summary/Keyword: quantitative evaluation method

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A Study on the Preparation of Distribution Table for Quantitative Evaluation of Small-Scale Environmental Impact Assessment

  • Dong-Myung CHO;Ju-Yeon LEE;Woo-Taeg KWON
    • Journal of Wellbeing Management and Applied Psychology
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    • v.6 no.3
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    • pp.13-18
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    • 2023
  • Purpose: The small-scale environmental impact assessment has been in operation since its implementation in August 2000, and is a system that meets the purpose of sustainable development in consideration of the environment in areas requiring conservation. However, when preparing a small environmental impact assessment report, the contents of the reduction measures are too qualitative, or reports are prepared to simply list the compliance stipulated by individual laws, and the contents of consultations prepared by consultative agencies and review agencies are not much different. In addition, the direction of consultation on development projects for similar locations of the same project type is frequently changed by reflecting the subjective judgment of the consultative officer of the Ministry of Environment (Environment Agency). Therefore, this study attempted to improve the establishment of measures to reduce the existing simple listing of qualitative contents and the inconsistent presentation of review opinions by consultative agencies and review agencies. Research design, data and methodology: The research method extracted absolute evaluation items and relative evaluation items among small environmental impact assessment items, analyzed and presented detailed items, and prepared a distribution table for each section according to the details of the relative evaluation items, and presented them as a table. Results: This study was conducted to derive uniform results with objective indicators in the preparation and consultation process of a small-scale environmental impact assessment. Conclusions: Once a quantitative evaluation is established, the consultant can objectively determine and process the environmental impact.

Development of analytical method of DMDM hydantoin, Sorbic acid, Phenoxy ethanol in Cosmetics

  • Kim, Young-Ok;Jang, Jung-Yun;Lee, Jeong-Pyo;Yang, Seong-Jun;Lee, Kyung-Shin;Yang, Won-Jun;Kim, Chong-Kap;Choi, Sang-Sook
    • Proceedings of the PSK Conference
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    • 2003.04a
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    • pp.280.3-281
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    • 2003
  • A high-performance liquid chromatographic method for the simultaneous quantitative analysis of DMDM hydantoin, sorbic acid, phenoxy ethanol in cosmetics was studied by using a X-terra C18 column and 0.75mM KH2PO4 in 0.85% sulfuric acid and methanol mixture(7:3) at 214nm. Calibration curves were found to be linear in the 20-100$\mu\textrm{g}$/mL range (DMDM hydantoin), 50-250$\mu\textrm{g}$/mL range (sorbic acid) and 10-50$\mu\textrm{g}$/mL range (phenoxy ethanol). The result of recovery test were 96.6% - 104.2%. This HPLC method can be applied quality control of cosmetics.

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DEVELOPMENT OF ANALYYICAL METHOD OF DMDM HYDANTOIN, SORBIC ACID, PHENOXY ETHANOL IN COSMETICS

  • K. H. Son;Kim, Y. O.;J. Y. Jang;Lee, J. P.;S. J. Yang;Lee, K. S.;W. J. Yang;Kim, C. K.;Park, S. S.
    • Proceedings of the SCSK Conference
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    • 2003.09b
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    • pp.527-527
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    • 2003
  • A high-performance liquid chromatographic method for the simultaneous quantitative analysis of DMDM hydantoin, sorbic acid, phenoxy ethanol in cosmetics was studied by using a X-terra C$\sub$18/ column and 0.75mM KH$_2$PO$_4$ in 0.85% sulfuric acid and methanol mixture(7:3) at 214nm. Calibration curves were found to be linear in the 20-100 $\mu\textrm{g}$/mL range (DMDM hydantoin), 50-250 $\mu\textrm{g}$/mL range (sorbic acid) and 10-50 $\mu\textrm{g}$/mL range (phenoxy ethanol). The result of recovery test were 96.6% ∼ 104.2%. This HPLC method can be applied quality control of cosmetics.

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When Evaluated Using CT Imaging Phantoms AAPM Phantom Studies on the Quantitative Analysis Method (AAPM Phantom을 이용한 CT 팬텀 영상 평가 시 정량적 분석 방법에 관한 연구)

  • Kim, Young-Su;Ye, Soo-Young;Kim, Dong-Hyun
    • The Journal of the Korea Contents Association
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    • v.16 no.8
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    • pp.592-600
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    • 2016
  • AAPM CT performance for special medical equipment quality control checks using a standard phantom for evaluation, using the evaluator's subjective assessment as to minimize errors due computerized assessment program to evaluate their usefulness. Phantom for evaluation AAPM CT Performance Phantom: was used, the default shooting conditions are the same as quality control checks. And, we use IMAGE J to evaluate the program. Quantitative evaluation with CT attenuation coefficient and the noise measurement, the uniformity measurement, the slice thickness measurement, contrast resolution of the measurement, a phantom image of the spatial resolution determined by the evaluation program is evaluated as self-extracting the result after processing the image, CT uniformity measurement for the evaluation that was smaller and the standard deviation of a video image processing more uniform slice thickness measurements it is difficult to evaluate due to the difference of the ratio of the measured value of the phantom image. Contrast resolution was measured cylindrical diameter 6th evaluate the shape of a circle obtained a mean value and a standard deviation of diameters, the spatial resolution of the group of source, including acceptance criteria automatically extracted result as a result of both the number of the extracted circularIt appeared. Evaluate the source image and video processing, and video to qualitative evaluation by gross were processed video image is shown excellent results. If the evaluators in order to minimize the errors of subjective judgment based on the results of the above should be done with a quantitative evaluation and qualitative evaluation utilizes a computerized assessment program is considered that further evaluation be made more efficient.

Phantom of the AAPM CT imaging evaluation Studies on the quantitative analysis method (CT 정도관리 영상의 정량적 분석방법에 관한 연구)

  • Kim, Young-su;Ko, Seong-Jin;Kang, Se-Sik;Ye, Soo-young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.271-274
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    • 2016
  • CT quality assurance imaging evaluation and enforcement as quantitative assessment by phantom image evaluation, assessment items include There are also contrasting the water attenuation coefficient, uniformity, noise, resolution, spatial resolution, 10mm slice thickness evaluation, contrast resolution, space for the resolution, the slice thickness evaluation, it is possible to estimate the error due to the evaluation by the subjective judgment of the tester, using a subjective error image processing program to be computed to minimize the objective evaluation. Basic recording conditions of the CT image quality control assessment is the same as special medical equipment quality control checks, the images were evaluated quantitatively using IMAGE J. For a CT attenuation coefficient, the uniformity, noise evaluation, were evaluated as CT quality control image the standard deviation of the measured value of the digital processing of image smaller and less noise uniform images than the, contrast and resolution assessment is the size of the diameter of a circle having a large the 1 inch, 0.75 inch, 0.5 inch quality if the diameter of the circle, was evaluated in the small circle in the near circle ellipse. Spatial resolution is evaluated by using a self-extracting features of an image processing program, all of the groups of members comprising the acceptance criteria to automatically extract, was evaluated to be very useful for the quantitative assessment. When CT image quality control assessment on the basis of the results such as the above, if using an image processing program to minimize the subjective judgment of the error evaluator and is determined more efficient than would be made quantitative evaluation.

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Verification of Quantitative Evaluation Method for Ferritic Weld Metal Microstructure (철강 용착금속 미세조직의 정량화 기법 검증)

  • Kim Ka-Hee;Kim Hee-Jin;Ryoo Hoi-Soo
    • Journal of Welding and Joining
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    • v.23 no.4
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    • pp.27-33
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    • 2005
  • Quantitative evaluation was performed on the microstructure of flux-cored arc(FCA) weld metal using a method blown as IIW scheme. It was mainly intended to figure out any practical difficulties in applying this method and also to provide the consumable makers with basic guide line in developing FCA welding consumables far better properties. Assessment of the experimental results showed IIW scheme was quite reliable in the low heat input range where the acicular ferrite was a major constituent. However, in the high heat input range, some scatter was noticed as the other phases like grain boundary ferrite and Widmansttaten ferrite become dominant. It implies that the accuracy of IIW scheme depends on the faction of microstructural constituents and it become worse as the fraction of latter two phases increases. This tendency was discussed in terms of the characteristics of those two phases. In addition, base line microstructure of rutile type FCA weld metal was addressed for developing new FCA welding consumables intended for higher heat input welding.

Age Related Analysis of Ultrasound Images of Normal Skeletal Muscle (연령에 따른 정상 골격근의 초음파 영상 분석)

  • Jeong, Jin-Gyu;Kim, Kye-Yoep;Kim, Jong-Man;Ki, Tae-Youl
    • Physical Therapy Korea
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    • v.13 no.1
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    • pp.47-53
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    • 2006
  • Since ultrasound has different reflections depending on components of organization, analysis of ultrasound images of skeletal muscle can offer both quantitative and qualitative reports as concerns skeletal muscle structure. This study is focused on the ultrasound method for evaluating the structural characteristics of skeletal muscle and also conducted to examine its practicality. After obtaining images of the elbow flexors from an ultrasound image device with 88 normal subjects whose ages were between twenty and seventy years old (44 men and 44 women), muscular density and white area index (WAI) which indicated structural characteristics of skeletal muscle were analyzed with gray scale analysis. The study examined correlations between subject's age and items which obtained from measuring ultrasound images and the differences in relations to sex and age. Muscular density and WAI had a high correlation with age and were significantly increased in men and women with greater age. The quantitative evaluation method of skeletal muscle structure which analyzed the ultrasound images has high practicality because it is a non-invasive method which complements physical therapy diagnosis and research methods and promotes functionality evaluation.

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The Application of a Quantitative Performance Assessment Model in Accordance with Button Menu Form Changes in Touch Screen Input Methods (터치스크린 입력방식에서 버튼메뉴의 형상변화에 따른 정량적 수행평가 모델 적용)

  • Han, Sang-Bok;Pyo, Jung-Sun
    • Journal of Digital Convergence
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    • v.13 no.11
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    • pp.337-348
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    • 2015
  • Touch input method is unintended difficulties regarding touch and input have increased with touch input methods when compared to using a mouse for input in previously existing menus. This study attempted to analyze usability evaluations according to form and size changes of minimal button forms in button menus. This attempted to verify possibilities through more effective applications of the quantitative performance prediction evaluation model through comparative analysis of Fitts' Law, the representative model of the regression model formula and the interface human performance evaluation method, so that applications can be made in interface designs of touch input methods. Therefore it was significant in that it made reflections on design with consideration given to use user times according to button forms and size changes that can be applied to touch screens.

Lifetime Estimation of a Bluetooth Module using Accelerated Life Testing (가속수명시험을 이용한 블루투스 모듈의 수명 예측)

  • Son, Young-Kap;Chang, Seog-Weon;Kim, Jae-Jung
    • Journal of the Microelectronics and Packaging Society
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    • v.15 no.2
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    • pp.55-61
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    • 2008
  • This paper shows quantitative reliability evaluations of a Bluetooth module through extending previous qualitative methods limited to structure reliability tests and solder joint reliability tests for Bluetooth modules. Accelerated Life Testing (ALT) of the modules using temperature difference in temperature cycling as an accelerated stress was conducted for quantitative reliability evaluation under field environment conditions. Lifetime distribution parameters were estimated using the failure times obtained through the ALT, and then Coffin-Manson model was implemented. Results of the ALT showed that the failure mode of the modules was open and the failure mechanisms are both crack and delamination. The ALT reproduced the failure mode and mechanisms of failed Bluetooth modules collected from the field. Further, a quantitative reliability evaluation method with respect to various temperature differences in temperature cycling was proposed in this paper. $B_{10}$ lifetime of the module for the temperature difference $70^{\circ}C$ using the proposed method would be estimated as about 4 years.

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A study on the quantitative risk grade assessment of initial mass production for weapon systems (초도양산 군수품에 대한 정량적 위험등급평가 방안 연구)

  • Jung, Yeongtak;Ham, Younghoon;Roh, Taegoo;Ahn, Manki;Ko, Kyungwa
    • Journal of Korean Society for Quality Management
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    • v.46 no.3
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    • pp.441-452
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    • 2018
  • Purpose: The purpose of this paper is to study quantitative risk grade assessment for objective government quality assurance activities based on risk management in initial mass production for weapon systems. Methods: The Defense quality management regulations and foreign risk assessment documents are referred to analyze problems performing quality assurance actives. The failure rate data, maintainability and cost of products have been studied to quantify the risk Likelihood and impact. The analyzed data were classified as risk grade assessment through K-means Cluster Analysis method. Results: Results show that a proposed method can objectively evaluate risk grade. The analyzed results are clustered into three levels such as high, middle and low. Two products are allocated high, eleven low and seven middle. Conclusion: In this paper, quantitative risk grade assessment methods were presented by analyzing risk ratings based on objective data. The findings showed that the methods would be effective for initial mass production for weapon systems.