• Title/Summary/Keyword: Standardization Test

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A Study on the Standardization of Performance Test Method for Cathodic Protection System in Korea (국내 전기방식 시스템의 성능평가를 위한 시험 방법에 대한 표준화 연구)

  • Bae, Jeong-Hyo;Ha, Tae-Hyun;Lee, Hyun-Goo;Kim, Dae-Kyeong;Lee, Ji-In;Kim, Suk-Won
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.644-647
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    • 2002
  • Generally. the owners of the facilities adopt CP(Cathodic Protection) Systems to protect the corrosion accidents previously. The developed countries have secured the standard of CP systems through the various researches and consolidation of the rules. So in the first stage, I had been studied the international standards: JSCE, NACE Standard. ASTM, DNV, Australian Standard etc. and standardized the CP systems about items, performance. specifications and so on. In this thesis, I have been studying the results of standardization of performance test methods of CP system to apply in Korea.

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Potency Assay of Factor Ⅷ : C Concentrates using the Chromogenic and Clotting Assay (합성기질 및 응고시간을 이용한 혈액응고 제 8인자 역가측정법)

  • 강혜나;김순남;허숙진;홍성화
    • YAKHAK HOEJI
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    • v.45 no.5
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    • pp.476-483
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    • 2001
  • The clotting assay was replaced by the chromogenic substrate assay which is recommended by the European Pharmacopoeia (EP) and the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis based on the reliability convenience and simplicity of the chromogenic assay, A correlation study was carried out with a one-stage factor Ⅷ : C clotting assay and the performance of the chromogenic assay was evaluated using two test kits that fulfilled the requirements of EP for factor Ⅷ concentrates test. Although chromogenic assay has partly differences in measurement principle and standardization, this assay has a high correlation with clotting assay in various types of factor Ⅷ concentrates and factor Ⅷ standard. We conclude that the chromogenic assay for factor Ⅷ : C concentrates correlates well with the clotting assay and shows good analytical performance.

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Tests Based on Skewness and Kurtosis for Multivariate Normality

  • Kim, Namhyun
    • Communications for Statistical Applications and Methods
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    • v.22 no.4
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    • pp.361-375
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    • 2015
  • A measure of skewness and kurtosis is proposed to test multivariate normality. It is based on an empirical standardization using the scaled residuals of the observations. First, we consider the statistics that take the skewness or the kurtosis for each coordinate of the scaled residuals. The null distributions of the statistics converge very slowly to the asymptotic distributions; therefore, we apply a transformation of the skewness or the kurtosis to univariate normality for each coordinate. Size and power are investigated through simulation; consequently, the null distributions of the statistics from the transformed ones are quite well approximated to asymptotic distributions. A simulation study also shows that the combined statistics of skewness and kurtosis have moderate sensitivity of all alternatives under study, and they might be candidates for an omnibus test.

A study on the standardization of advertising through the appeal means change (소구형태변화를 통한 광고의 표준화 수준에 관한 연구)

  • 김기수
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.17 no.32
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    • pp.255-266
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    • 1994
  • This study does present things to suggest to foreign multinational corporation or domestic corporation through the empirical study on the standardization level. If we summary this study, it is as follows. In chapter I, we did institute the problems and explain the objects and methods and system of the study. In chapter II, we did explain the universality of the culture and international advertisement. Next, we did explain the background of doing specialization strategy and standardization strategy. Also we did study the previous study about the arguements for and against these. Lsat we did institute the hypothesises as follows. - Hypothesis 1 $H_0$ : The use of westerner appeal means has been increased than 11 years before and is able to increase continuously. - Hypothesis 2 $H_0$ : The use of westerner model and knowned has been increased than 11 years before and is able to increase continuously. - Hypothesis 3 $H_0$ : The use of the English language has been increased than 11 years before and is able to increase continuously. - Hypothesis 4 $H_0$ : The use of the west short piece and background has been increased than 11 years before and is able to increase continuously. In chapter III, we did refer to the method of this study. First, we did adjust the measure of standardization index, and we did work coding it, such after the two coder did check the freguency of the appeal meanstype about the advertisement of four daily report. Then we did select eight production as high involvement production and seven production as low involvement. We did test the coder's trust degree on the such sample to be selected through the 't-test' of the SAS statistic program and regression analysis through the spss/$pc^+$ statistic program to approve the this study's hypothesises. In chapter IV, we did analysis the results of the empirical study on the high or low involvement productions. First, the results of t-test to approve the coder's trust degree is that it is same statistically attentionly the distribution of the sample between coder at 10% attention level. Next, the results of the regression analysis on eight hypothesises are as fellows. In case of high involvement production we are able to speak that the use of the English language appeal among the eight appeals is only standardized. And incase of low involvement production, we are able to speak that the use of the hard-sell appeal among the eight appeds is only standardized. Therefore we did conclude that the standardization level of Korea newspaper advertisement is low. Also this suggests that it will do plan and do the specialzation strategy or localization strategy foreign multinational corporation or domestic corporation in Korea newspaper advertisement. In chapter V, we do present the boundary of this study and new study methods.

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Analytic study on arsenic content in plastic materials (플라스틱 소재의 비소 함유량 분석에 관한 연구)

  • Lee, Jae-In;Choi, Zel-Ho;Choi, Ki-In;Ko, Byung-Rae;Choi, In-Suk;Cho, Hun-Sik
    • Analytical Science and Technology
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    • v.25 no.6
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    • pp.402-409
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    • 2012
  • Quantitative analytical condition for arsenic in plastic materials by the flow injection-hydride generation-inductively coupled plasma-atomic emission spectrometry was studied. The plastic samples were dissolved by wet-acid digestion method and microwave-acid digestion method. The reproducibility and accuracy in this method was verified using of certified reference materials(CRMs) CRM-EC680k and CRM-EC681k. The analyical results agrees with certified value within the range of uncertainty. The results of CRM-EC680k wer 4.1~4.3 mg/kg (certified value $4.1{\pm}0.5$ mg/kg), and the results of CRM-EC681k were 28.9~30.6 mg/kg (certified value $29.1{\pm}1.8$ mg/kg).

Construction of Sports Event Standard System in the Context of Big Data and Internet of Things

  • Jin Zha
    • Journal of Information Processing Systems
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    • v.20 no.3
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    • pp.337-344
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    • 2024
  • It is a complex project to construct the standard system of sports events. Sports events standard system covers from the implementation plan to the evaluation work after the smooth implementation of sports events, involving many links. Large-scale sports events have extremely high media value. However, the successful organization and operation of large-scale sports events face many problems to be overcome, especially in terms of event safety. Although the organizers and organizers of large-scale events have invested many resources for the safe holding of sports events, violence similar to "football hooligans" in Europe is endless. At present, compared with Western countries, the standardization of sports events in China is low, and there is a problem of a late start and huge difference with Western developed countries. Knowing the construction of the standardization system's situation in China, we have summarized the data related to 15 sports events held in Chengdu is the last 5 years. By analyzing the problems in the process of holding these 15 events and the reflections of participants on the experience of sports events, the problems in the development of the standard system of sports events are discussed in depth. The final conclusion is that the system structure of China's sports events is not so good and athletes have a poor experience. China's sports event system still has many problems. Finally, we built a sports event standardization model using Internet of Things, and after a practical test we found that it has a good effect. Finally, we combined the current situation of sports event standardization system in China and put forward the following suggestions: laws and regulations related to the standard system of sports events must be formulated at the national level. The implementation level must strengthen the degree of integration of sports events and technology. To improve the quality of human resources in the management of sports events. The article puts forward targeted solutions, which play a great role in promoting the perfection and completeness of China's standard system for sports events. At the same time, it also promotes economic development and improves China's international status.

Standard test method for Photocatalytic activity with optical fiber (광섬유를 이용한 광촉매 성능 측정 표준화의 이해)

  • Joo Hyun-Ku;Ha Jin-Wook;Cho Duk-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.6 no.4
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    • pp.331-336
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    • 2005
  • Recently, Japan has showed strong demand for protection of consumers against misleading specification provided by producers, establishing the committee for JIS and ISO. To protect domestic market and overcome potential subordinate relationship in overseas market, several universities and institutes in Korea have performed collaborative works on the standardization of test method f3r photocatalytic activity concerning the selected application fields. This article deals with the process and the result for the method of testing photocatalytic sol or suspended powder using optical fiber. Currently, this method is Intended for TiO2, but can be applied for various photocatalytic raw materials that can be activated by visible light and solar irradiation.

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Comparative Study on the Evaluation of Liquefaction Resistance Ratio According to the Application of the Korean Standard for Cyclic Triaxial Strength Test (반복삼축강도시험의 KS 표준 제정에 따른 액상화 저항강도 평가 비교 연구)

  • Lee, Seokhyung;Han, Jin-Tae;Park, Ka-hyun;Kim, Jongkwan
    • Journal of the Korean Geotechnical Society
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    • v.38 no.9
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    • pp.35-44
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    • 2022
  • The cyclic triaxial strength test is commonly applied as a laboratory test for evaluating the liquefaction resistance ratio. However, the test procedure was not standardized in South Korea until recently; thus, the test results could significantly differ depending on the performer and apparatus, even when identical soil is used. In this study, the American and Japanese standards for the cyclic triaxial strength test were analyzed and the Korean standard was developed considering domestic circumstances. To verify the effectiveness of the standardization of liquefaction laboratory tests, several cases of cyclic triaxial strength tests were conducted and analyzed (1) following the Korean standard and (2) without following any specific instructions for the test procedure. Under (1), the deviation of the liquefaction resistance ratio dramatically decreased.

A Study on Safety Evaluation Method of LKAS in Actual Road (LKAS의 실도로 안전성 평가방법에 관한 연구)

  • Yoon, PilHwan;Lee, SeonBong
    • Journal of Auto-vehicle Safety Association
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    • v.10 no.4
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    • pp.33-39
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    • 2018
  • Recently, the automobile industry has developed ADAS (Advanced Driver Assistance System) to prevent traffic accidents and reduce driver's driving burden. Among the ADAS, the LKAS (Lane Keeping Assistance System) is a support system for the convenience and safety of the driver, and the main function is to maintain the driving lane of the vehicle. LKAS is a system that uses radar sensor and camera sensor to collect information about the position of the vehicle in the lane and to support keeping the lane through control if necessary. In many countries, LKAS has already been commercialized and the convenience and safety of drivers have been improved. The international LKAS evaluation test procedure is being developed and discussed by standardization committees such as the ISO (International Organization for Standardization) and the Euro NCAP (New Car Assessment Program). In Korean, the LKAS test method is specified in the KNCAP (Korean New Car Assessment Program), but the evaluation method is not defined. Therefore, the LKAS test procedure that meets international standards and is suitable for domestic road environment is necessary. In this paper, development of LKAS test evaluation scenarios that meets international standards and considering domestic road environment, and the formula that can evaluate the result value after control as the relative distance of lane and the front wheel are suggested. And a comparative analysis was conducted to verify the validity of the suggested scenario and formula. The test evaluation was conducted using the vehicle equipped with the LKAS.