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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean society for quality management
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Journal DOI :
The Korean Society for Quality Management
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Volume & Issues
Volume 41, Issue 4 - Dec 2013
Volume 41, Issue 3 - Sep 2013
Volume 41, Issue 2 - Jun 2013
Volume 41, Issue 1 - Mar 2013
Selecting the target year
Automotive Functional Safety-ISO 26262 and Its Countermeasures
Jung, Eun-Ki ; Kwon, Hyuck-Moo ; Lee, Min-Koo ; Kim, Dong-Chun ; Hong, Sung-Hoon ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 185~196
DOI : 10.7469/JKSQM.2013.41.2.185
Purpose: This paper is focused on introducing the Automotive Functional Safety International Standard-ISO 26262 and proposing effective countermeasures of ISO 26262. Methods: We studied collected data about ISO 26262 and analyzed the relationship between ISO 26262 and Quality 5 Star of Hyundai Kia Motors for the integrated product development process. Results: Results showed the product development process for the integration plan between ISO 26262 and Quality 5 Star. In addition, we added an entry about the functional safety in the evaluation item of Quality 5 Star System. Conclusion: In order to introduce ISO 26262 effectively, we proposed ISO 26262 requirements and functional safety concept to be added to Quality 5 Star.
A Case Study of Measuring Eco-Efficiency of Products Using the QEFD Approach
Hong, Seung-Ryong ; Park, Seungwook ; Kim, Yeon-Bok ; Kim, Jong-Dae ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 197~208
DOI : 10.7469/JKSQM.2013.41.2.197
Purpose: This study proposed a systematic approach to measure eco-efficiency of products based on the concept of quality function deployment(QFD). QFD method has been used to convert customer's subjective requirements to design specifications. A extension of QFD to environmental issues is known as quality environmental function deployment(QEFD). QEFD includes environmental requirements into customer's demand for quality, and incorporates them to design specifications of a product. Methods: In this study, we compared eco-efficiency of old and new models through application of QEFD. Results: The result revealed that the new model's eco-efficiency improved 24% better than the old model. Also, we found that user's Factor X of the new model has been improved to 1.178, which is about 18% better than that of the old model. Conclusion: This study implied that we can systematically use QEFD to determine eco-efficiency of two comparable products in any industries.
Comparing the Questionnaires for Classifying Quality Attributes in the Kano Model
Kim, Man-Ho ; Song, HaeGeun ; Park, Young T. ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 209~220
DOI : 10.7469/JKSQM.2013.41.2.209
Purpose: This paper compares and discusses the influence on the quality classification of Kano's questionnaire which is used for the Kano model(Kano et al., 1984), the 3-point Likert-scale newly proposed by Kano and the 5-point Likert-scale presented in this study. Methods: For the comparison, the current study conducts a survey of 631 television viewers. The classification results of the three methods are then compared with those of direct classification which is adopted as a standard for classification of quality attributes. Results: The agreement rates between the results using conventional Kano's questionnaire and the results using direct classification is higher than the results using 3-point and 5-point Likert-scales. In addition, the attributes grouped as must-be or attractive in the direct classification appear to be classified as one-dimensional attributes in the Likert-scales. Conclusion: In comparison with the convensional Kano's questionnaire, the Likert-scale questions highly tend to classify the quatity attributes as one-dimensional. Although the classification results of the 3-point and 5-point Likert-scales are the same, the 5-point Likert-scale has the advantage to classify quality attributes in more detail.
Analysis of the Project Risk Factors Using Modified Kano Model
Jang, Deok-Jae ; Song, HaeGeun ; Park, Young T. ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 221~232
DOI : 10.7469/JKSQM.2013.41.2.221
Purpose: This paper examines risk factors which affect project success, and proposes a method utilizing the average potential satisfaction index(API) to evaluate how much the satisfaction level of the personnel involved in the project can change by reducing the risk. Methods: The current study derives 11 risk factors affecting project success from literature review and conducts survey of 253 subjects who have project work experience. A modified Kano's questionnaire using 5-point Likert-scale is applied to investigate the amount of satisfaction or dissatisfaction when the risk factors are reducted or not, respectively. Results: The respondents consider that the risk factors which include the three elements of project management(schedule, quality, cost) is more important than other risk factors related to the project environment, and technology and profitability. Conclusion: The average potential satisfaction index proposed in this study can measure the perception on the risk factors of the personnel involved in the project, since it has a strong correlation with the perceived importance by the respondents in this study.
Heuristic Process Capability Indices Using Distribution-decomposition Methods
Chang, Youngsoon ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 233~248
DOI : 10.7469/JKSQM.2013.41.2.233
Purpose: This study develops heuristic process capability indices (PCIs) using distribution-decomposition methods and evaluates the performances. The heuristic methods decompose the variation of a quality characteristic into upper and lower deviations and adjust the value of the PCIs using decomposed deviations in accordance with the skewness. The weighted variance(WV), new WV(NWV), scaled WV(SWV), and weighted standard deviation(WSD) methods are considered. Methods: The performances of the heuristic PCIs are investigated under the varied situations such as various skewed distributions, sample sizes, and specifications. Results: WV PCI is the best under the normal populations, WSD and SWV PCIs are the best under the low skewed populations, NWV PCI is the best under the moderate and high skewed populations. Conclusion: Comprehensive analysis shows that the NWV method is most adequate for a practical use.
Study on a New Response Function Estimation Method Using Neural Network
Hoang, Thanh-Tra ; Le, Tuan-Ho ; Shin, Sangmun ; Jeong, Woo-Sik ; Kim, Chul-Soo ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 249~260
DOI : 10.7469/JKSQM.2013.41.2.249
Purpose: The main objective of this paper is to propose an RD method by developing a neural network (NN)-based estimation approach in order to provide an alternative aspect of response surface methodology (RSM). Methods: A specific modeling procedure for integrating NN principles into response function estimations is identified in order to estimate functional relationships between input factors and output responses. Finally, a comparative study based on simulation is performed as verification purposes. Results: This simulation study demonstrates that the proposed NN-based RD method provides better optimal solutions than RSM. Conclusion: The proposed NN-based RD approach can be a potential alternative method to utilize many RD problems in competitive manufacturing nowadays.
Image Improvement and Trust Building of Traditional Medical Service Considered Emotional Attachment
Cho, Chul-Ho ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 261~276
DOI : 10.7469/JKSQM.2013.41.2.261
Purpose: This study intends to offer strategic implications that can be used in Korean medicine hospitals through analysis of causal relationship among factors focusing on image improvement and trust building. Methods: Differential model was introduced to test causal relationship. Questionnaire was developed, and data was collected and analyzed with Structural Equation Modeling. Results: Medical service has effects on image, trust, and CS. CS has an effect on trustworthiness, and trustworthiness has positive effect on loyalty intention and has negative effect on switching intention. Emotional attachment has moderating functions between trust and loyalty intention and between trust and switching intention. Conclusion: This study offers practical implications to relevant managers, at the same time it has limitations that omits relevant study of inducing factor for emotional attachment.
The Moderating Effect of Individual Factors on Information Systems(IS) Success Model
Lee, Dong-Jin ; Lee, Sang-Chul ; Suh, Yung-Ho ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 277~288
DOI : 10.7469/JKSQM.2013.41.2.277
Purpose: This study aims to analyze the success factors of information systems and the moderating effect of individual factors in mandatory environment. Methods: In order to test the model, a questionnaire survey is delivered from salespersons of an insurance company in Seoul, Korea. 200 questionnaires are finally analyzed. Structural Equation Modeling (SEM) is adopted to analyze the data and Smart PLS 2.0 is used for examining the moderator effect. Results: The extended model proposed in this paper adopted individual factors and examined their moderator effect among constructs. An empirical test is carried out accordingly in order to test the model proposed in this paper. The results reveal that individual factors (i.e. Computer Self-Efficacy, Anxiety, Personal Innovativeness in IT) have a significant moderating effect on individual performance in the environment of mandatory information system usage. Conclusion: This paper extended the research field of information system success model to information systems in mandatory environment regarding differences of individual factors.
The Effects of Perception Levels of Diversity on Team Performance: Moderating Effects of Conflict
Yun, Jun Hee ; Shin, Ho-Chul ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 289~300
DOI : 10.7469/JKSQM.2013.41.2.289
Purpose: The results of prior studies investigating main effects between diversity and team performance are neither clear nor consistent. This study seeks to provide more evidence for a direct link between these two. The present study also attempts to close a gap in the literature by examining conflict as a moderator of the relationship between diversity and team performance. Methods: As suggested by Williams and O'Reilly(1998), this study examines the effects of perception levels of three specific types of diversity (social category diversity, value diversity, and informational diversity) and two contextual moderators (task conflict and relationship conflict) on team performance. Results: The results show that perception levels of all three types of diversity are significantly related to team performance in the current sample of 313. Results also indicate that relationship conflict significantly interacted with the perception levels of diversity in relating to team performance. Results for task conflict, however, fails to support the hypothesis. Conclusion: The results suggest that the effects of diversity on team functioning depend on how diversity is perceived by team members, rather than actual diversity seen by team members. Theoretical and practical implications are reviewed, and limitations of the study and suggestions for future research are addressed.
An Empirical Study of Railroad Technology Improvement Using AHP and QFD
Kim, Hyun Jung ; Kim, Soo Wook ;
Journal of the Korean society for quality management, volume 41, issue 2, 2013, Pages 301~322
DOI : 10.7469/JKSQM.2013.41.2.301
Purpose: This study aims to determine the needs of customers who use railroads as a mode of transportation and propose customer-oriented improvements in railroad technology by making connections between customer needs and railroad technology. Methods: We primarily used two methods for this study, AHP and QFD. First, AHP was used to evaluate the relative importance among the different components of railroad technology. Second, the QFD was applied to make a link between customer needs and railroad technology. Results: Railroad technology is largely divided into development, maintenance, and support. Empirical results showed the following improvement priorities in development, vehicle, system, line, signal/communication, power, and structure, in maintenance, vehicle, signal/communication, line, process, power, and structure, and in support, safety/precaution, management, environmental energy, operations/logistics, and station. Conclusion: Recognizing limitations in measuring the level of railroad technology when using the existing 'Technology Growth Model,' we used AHP and QFD to explore improvement directions for customer-oriented railroad technology. By offering customer-oriented services based on this study, railroad service providers will be able to acquire competitive advantage in the market.