• Title/Summary/Keyword: YOON's test

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Investigating the Causal Relationship between Service Quality and Customer Satisfaction by Granger's Test of Casuality Method (서비스품질과 고객만족간의 인과관계 실증 분석 : Granger 검정법을 중심으로)

  • Park, Yoon-Seo
    • Journal of the Korean Operations Research and Management Science Society
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    • v.36 no.4
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    • pp.143-160
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    • 2011
  • In the marketing research area, service quality and customer satisfaction have been considered as ones of the most important marketing variables. However, there has been a lot of controversy over the direction of the casual relationship between the service quality and the customer satisfaction. The purpose of this study is to investigate the casual relationship between the service quality and the customer satisfaction. Granger's test of casuality method has been used to test the casuality relationship between two variables. In this paper, we applied the Granger's test of casuality method to KS-SQI and NCSI data of 17 business area which had been gathered annually. As the research result, we found that the customer satisfaction might cause the service quality in many service area.

A Study on Load Test of Bogie for High Speed Electrical Multiple Unit (고속용 전동차 대차의 하중시험에 관한 연구)

  • Kim W.K.;Yoon S.C.;Jun C.S.;Kwon S.T.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.34-38
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    • 2005
  • This paper describes the result of load test of a bogie frame. The purpose of test is to evaluate the safety which bogie frame shall be considered fully sufficient rigidity so as to satisfy proper system function under maximum load. Bogie system consist of the bogie frame, suspensions, wheel-sets, a brake system and a transmission system. Among these component, the bogie frame is most significant component subjected to the vehicle and passenger loads. The evaluation method is used the JIS E 4207 specifications throughout the static load test. The test results have shown the bogie frame to be safe and stable under design load conditions.

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Database Structure for PDA Based Audiometric System (PDA 기반의 청력 검사를 위한 데이터베이스 구성)

  • Shin, S.W.;Kim, K.S.;Yoon, T.H.;Han, M.H.;Lee, S.M.
    • Proceedings of the KIEE Conference
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    • 2005.10b
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    • pp.385-387
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    • 2005
  • In this study, we tried to implement a PDA (Personal Digital Assistant)-based audiometric system to test hearing disorder. Due to the inherent handy nature of PDA system, our hearing test system can be easily performed in a local environment and consequently the measured audiometric data are stored and queryed via a built-in a PDA database system.

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Seoul Teacher's Satisfaction with and Needs for Health Examination and Health Promotion Programs (서울시 교사의 건강검진 및 건강증진 프로그램에 대한 만족도 및 요구도)

  • Chun, Nami;Yoon, Jae Hee;Kim, Chae Yoon;Hwang, Nami;Kim, Young Sook;Hwang, Moon Sook;Chae, Hyun Ju
    • Research in Community and Public Health Nursing
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    • v.23 no.2
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    • pp.155-164
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    • 2012
  • Purpose: The purpose of this study was to investigate Seoul teacher's satisfaction with and needs for health examination and health promotion programs. Methods: The participants were 3,186 teachers in Seoul. Data were collected through an on-line survey system from November 16 to December 7, 2008. Collected data were analyzed by descriptive statistics, t-test, ANOVA, and Scheffe's test using PASW 18.0 program. Results: Teacher's satisfaction with teacher health examination was low and needs for detailed tests of cancer and vocal cord disorders were high. Teacher's satisfaction with teacher health promotion programs was low and needs for stress management, exercise and vocal cord protection program were high. Conclusion: Vocal cord disorders should be included in teacher health examination and vocal cord protection program should be provided for teacher's health promotion. Stress management and exercise program should also be provided for teacher's health promotion.

Stability Test and Quantitative and Qualitative Analyses of the Amino Acids in Pharmacopuncture Extracted from Scolopendra subspinipes mutilans

  • Cho, GyeYoon;Han, KyuChul;Yoon, JinYoung
    • Journal of Pharmacopuncture
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    • v.18 no.1
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    • pp.44-55
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    • 2015
  • Objectives: Scolopendra subspinipes mutilans (S. subspinipes mutilans) is known as a traditional medicine and includes various amino acids, peptides and proteins. The amino acids in the pharmacopuncture extracted from S. subspinipes mutilans by using derivatization methods were analyzed quantitatively and qualitatively by using high performance liquid chromatography (HPLC) over a 12 month period to confirm its stability. Methods: Amino acids of pharmacopuncture extracted from S. subspinipes mutilans were derived by using O-phthaldialdehyde (OPA) & 9-fluorenyl methoxy carbonyl chloride (FMOC) reagent and were analyzed using HPLC. The amino acids were detected by using a diode array detector (DAD) and a fluorescence detector (FLD) to compare a mixed amino acid standard (STD) to the pharmacopuncture from centipedes. The stability tests on the pharmacopuncture from centipedes were done using HPLC for three conditions: a room temperature test chamber, an acceleration test chamber, and a cold test chamber. Results: The pharmacopuncture from centipedes was prepared by using the method of the Korean Pharmacopuncture Institute (KPI) and through quantitative analyses was shown to contain 9 amino acids of the 16 amino acids in the mixed amino acid STD. The amounts of the amino acids in the pharmacopuncture from centipedes were 34.37 ppm of aspartate, 123.72 ppm of arginine, 170.63 ppm of alanine, 59.55 ppm of leucine and 57 ppm of lysine. The relative standard deviation (RSD %) results for the pharmacopuncture from centipedes had a maximum value of 14.95% and minimum value of 1.795% on the room temperature test chamber, the acceleration test chamber and the cold test chamber stability tests. Conclusion: Stability tests on and quantitative and qualitative analyses of the amino acids in the pharmacopuncture extracted from centipedes by using derivatization methods were performed by using HPLC. Through research, we hope to determine the relationship between time and the concentrations of the amino acids in the pharmacopuncture extracted from centipedes.

Construction and Functional Tests of Fuel Assembly Mechanical Characterization Test Facility (핵연료집합체 기계적특성 시험시설 구축과 기능시험)

  • Lee, Kang-Hee;Kang, Heung-Seok;Yoon, Kyung-Ho;Yang, Jae-Ho
    • Transactions of the Korean Society of Pressure Vessels and Piping
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    • v.12 no.1
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    • pp.11-16
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    • 2016
  • Fuel assembly's mechanical characterization test facility (FAMeCT) in KAERI was constructed with upgraded functional features such as increased loading capacity, underwater vibration testing and severe earthquake simulation for extended fuel design guideline. This facility is designed and developed to provide out-pile fuel data for accident analysis model and fuel licensing. Functional tests of FAMeCT were performed to confirm functionality, structural integrity, and validity of newly-built fuel assembly mechanical test facility. Test program includes signal check of data acquisition system, load delivering capacity using real-sized fuel assemblies and a standard loading cylindrical rigid specimen. Fuel assembly's lateral bending test was carried out up to 30 mm of pull-out displacement. Limit case axial compression loading test up to 33 kN was performed to check structural integrity of UCPS (Upper Core Plate Simulator) support frame. Test results show that all test equipment and measurement system have acceptable range of alignment, signal to noise ratio, load carrying capacity limit without loss of integrity. This paper introduces newly constructed fuel assembly's mechanical test facility and summarizes results of functional test for the mechanical test equipment and data acquisition system.