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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean society for quality management
Journal Basic Information
Journal DOI :
The Korean Society for Quality Management
Editor in Chief :
Volume & Issues
Volume 39, Issue 4 - Dec 2011
Volume 39, Issue 3 - Sep 2011
Volume 39, Issue 2 - Jun 2011
Volume 39, Issue 1 - Mar 2011
Selecting the target year
A Study on Optimal Software Maintenance Policies with Warranty Period
Nam, Kyung-H. ; Kim, Do-Hoon ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 170~178
In general, a software fault detection phenonenon is described by a software reliability model based on a nonhomogeneous Poisson process(NHPP). In this paper, we propose a software reliability growth model considering the differences of the software environments in both the testing phase and the operational phase. Also, we consider the problem of determining the optimal release time and the optimal warranty period that minimize the total expected software cost which takes account of periodic software maintenance(e.g. patch, update, etc). Finally, we analyze the sensitivity of the optimal release time and warranty period based on the fault data observed in the actual testing process.
An Empirical Study on the Difference in Management Performance of Small-and Medium-sized Companies Due to the Types of ISO 9000 Quality Management Systems Certification Agencies
Kim, Yeong-Gi ; Park, Yong-Tae ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 179~187
Small- and medium-sized companies obtain ISO 9000 quality management systems as a way of adapting to the changes of business environment and improving their business performance. Certificates of ISO 9000 quality management systems have been granted to companies by either domestic or foreign certification agencies with different requirements and standards. This study empirically examined whether there are differences in business performance among small- and medium-sized companies that have obtained ISO 9000 quality management system from different types (domestic or foreign) of certification agencies. This study found that there are statistically significant differences in both qualitative and quantitative business performance among them. The findings of this study imply that companies considering ISO 9000 quality management systems be prudent in choosing the type of certification agency to maximize the expected benefits of ISO 9000 quality management systems. This study also provides the government agency regulating ISO 9000 quality management certification system with some valuable information that brings up the need for establishing and managing a more effective quality management certification system.
The Effect of Quality Circle Activities upon Quality Circle Performance and Business Performance
Choi, Jin-Young ; Lee, Sang-Chul ; Kim, Kwang-Yong ; Park, Sang-Chan ; Suh, Yung-Ho ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 188~198
The purpose of this research is to identify the effect of quality circles activities upon quality circles performance and business performance. Empirical results indicate that quality circle activities influence on quality circles performance in both individual and enterprise level, Quality circles performance influences on not employment satisfaction but customer satisfaction, business performance (profitability and market values) of companies with quality circles is higher than that of companies without quality circles. In conclusion, quality circle activities influence on quality circles performance that effect on business performance.
The Effect of Business Ethics and Innovative Tendencies on a Organizational Performance - Focused on awareness of business ethics' moderating effect for ISO 26000' improvement of performance -
Yoon, Heon-Deok ; Sung, Jong-Su ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 199~216
Most of the studies based on the outcome of business ethics were mainly focused on financial and non-financial results, CEO's business ethics and practical willingness as a preceding variable for business ethics and its success. This study regards business innovation on corporate sustainability and social responsibilities. There fore, this study will prove the result of activities based on business innovation and its activities, for participation of members is of importance. Therefore, this study proved the hypothesis that a worker's ethical conciousness is important in the result of business ethics, and that it also effects the result of business ethics for practice and innovative intentions for a moderating effect. This study emphasizes on ethical consciousness related to business ethics and consensus related to business ethics due to members' ethical consciousness influenced by organization's business ethics and perception. There ought to be an implication for this study. Also, as a result variable, the job satisfaction of coworkers is affected by conscious business ethics, but not affected in the innovative intentions. In addition, it is shown that the consciousness of business ethics is a controllable variable, for it affects job satisfaction concerning coworkers, but does not affect general job satisfactions.
Service Failure Management on Internet Shopping Environment by Combining Service Blueprint and FMEA
Lee, Hye-Jun ; Lee, Dong-Il ; Zhang, Yong ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 217~233
This paper introduces service failure management on internet shopping environment. The purpose of this study is to find and improve service failure modes at the time of customer's complaint thereby reducing that. To achieve this purpose, this study combines the Service Blueprint which describes the online shopping process and FMEA which finds each encounter of service failures and proposes how to recover them. First of all this study generates internet shopping process using Service Blueprint then matches customer's purchase decision making process and company's service provide process. After this process customer complaint types in real purchasing process are fell in according to their occurrence and more frequently occurred complaint is more risky. Finally 6 Risk Priority Numbers(unfair exchange/return policies, slow response/poor customer service support, purchase arrived later than promised/deliverly service dissatisfaction, dissatisfaction short period to take back/exchange/cancels order, A/S or handle defective item) are extracted and suggest their improvement.
Bootstrap-Based Fault Identification Method
Kang, Ji-Hoon ; Kim, Seoung-Bum ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 234~243
Multivariate control charts are widely used to monitor the performance of a multivariate process over time to maintain control of the process. Although existing multivariate control charts provide control limits to monitor the process and detect any extraordinary events, it is a challenge to identify the causes of an out-of-control alarm when the number of process variables is large. Several fault identification methods have been developed to address this issue. However, these methods require a normality assumption of the process data. In the present study, we propose a bootstrapped-based
decomposition technique that does not require any distributional assumption. A simulation study was conducted to examine the properties of the proposed fault identification method under various scenarios and compare it with the existing parametric
decomposition method. The simulation results showed that the proposed method produced better results than the existing one, especially in nonnormal situations.
A Study on Evaluating the Efficiency of the Photonics Industry in Gwangju Using a DEA Model
Cho, Geon ; Jung, Kyung-Ho ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 244~255
In this study, we try to evaluate the efficiency of the photonics industry using a data envelopment analysis(DEA) model. We first develope four stage procedures for selecting proper input and output variables which consist of selecting the first candidate variables from literature survey, selecting the second candidate variables through experts' discussion, measuring the partial efficiency of the selected variables based on Tofallis' profiling, and clustering some variables through the rank correlation analysis of partial efficiency proposed by Min and Kim(l998). With this procedure, we select 4 input variables(capital, number of employee, R&D cost, operating cost) and 2 output variables(sales, growth of sales) and then utilize CCR and BCC model to measure efficiencies of 26 photonics companies in Gwangju. Moreover, we perform the reference group analysis to figure out what causes inefficiencies and to provide the desirable values for input and output variables at which inefficient photonics companies become efficient. Finally, we classify 26 photonics companies into three groups such as optical communications, optical applications, and optical sources, and perform the Kruskal-Wallis test to check if there exist some differences between efficiencies of three groups.
A Study of the Effects of Champion's Transformational leadership on Belts' Creativity: Based on Mediate Effects of Belts' Intrinsic Motivation and Project's Learning and Growth
Yang, Jong-Gon ; Kim, Jin-Kyu ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 256~270
The study attempts to propose and test a causal research model using SEM (Structural Equation Model) to determine whether there is a relationship between six sigma champion's transformational leadership and belts' creativity based on the mediated effects of intrinsic motivation and project's learning and growth. The subjects of the study composed of 134 belts from manufacturing and service firms implemented six sigma. Empirical results show that transformational leadership is positively related to intrinsic motivation and project learning and growth. In addition, intrinsic motivation and project learning and growth are positively related to creativity. The results of the study imply that creativity of six sigma belts would be enhanced by implementation of six sigma projects and utilizing six sigma tools and methods.
A Study on the Relationship between Social Network of Codeshare and Performances in Airline Industries
Kwon, Byeung-Chun ; Cho, Nam-Wook ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 271~280
In this paper, the relationships between code-share networks and performances in airline industry were analyzed by using Social Network Analysis (SNA). We first analyzed the schedule data from OAG (Official Airline Guide) to obtain core-share information of airline industries. SNA was, then, applied to the code-share information. Finally, statistical analysis was conducted to analyze the relationships between code-share social networks and performances. The result shows that the size and out-degree centrality have relatively significant effects on the performance of airline industries, while in-degree and betweenness centrality has less significant effects.
Mediating Effect of Trust in Supervisor on the Relationships Between Self-Leadership and Service Quality
Son, Eun-Il ; Song, Jung-Su ; Koh, Hyung-Il ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 281~291
The purpose of this study verifies: the relationships between self-leadership and service quality, and mediator effect of the trust in supervisor. In order to verify the relationships and mediator effect, data obtained from 572 workers engaged in medical institutions at Ulsan Metropolitan City were analyzed by using SPSS 12.0, AMOS 5.0. The findings are as follows: First, the relationships between self-leadership and trust in supervisor is positively related. Second, there was also a positive correlation between the trust in supervisor and service quality. Third, the relationships between self-leadership and service quality is positively related. Finally, the trust in supervisor played as a partial mediator on the relationship between self-leadership and service quality. Based on these findings, the implications and the limitations of the study were presented including some directions for future studies.
The Effect of Quality Management System and Absorptive Capacity on the Competitiveness of Small and Medium Venture Manufacturing Company in Electric and Electronic Industry
Jin, Sung-Han ; Lee, Cheol-Gyu ; Lee, Dong-Myung ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 292~304
This study is to search for the core factors of improving competitiveness of small and medium venture manufacturing company in electric and electronic industry and to do an in-depth analysis of the relations with management performance through systematic approach and to provide implications of importance of the management for the improvement factors for the domestic small and medium venture manufacturing company in electric and electronic industry. The report is analyzed how the relationship between the quality management system that was discussed in existing literature and the core factors of absorbing capability impact to the enterprise management performance.
An Application of Idea Generation Methods to Kano Quality Model
Kim, Tai-Young ; Park, Young-Taek ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 305~312
Kano model has been widely used to identify and classify customer attributes of a product or a service. The first step of Kano model application is the derivation of customer attributes, and brainstorming has been used conventionally for the purpose. A typical advantage of brainstorming is to get many ideas in a relatively short period, but the practicability of the derived ideas are known to be not so good. The derivation of good and practical ideas is important for the successful use of Kano model. Wish list, bug list and forced connection method as well as brainstorming were applied to PMP(Portable Multimedia Player) in order to derive customer attributes. To compare the idea generation methods, the derived attributes are classified and compared using Kano model.
Statistical Design of Two-Stage Reliability Demonstration Tests
Seo, Sun-Keun ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 313~319
In design verification and process validation stages, reliability demonstration tests(RDT's) are common practice in industry, A new two-stage RDT that is known to be more efficient than a corresponding single-stage one in terms of expected test duration for Weibull distribution is proposed. Zero or one failure two-stage plans to minimize expected test duration under Type I and hybrid censoring subject to satisfying consumer's risk at a specified reliability target are developed and a numerical example is provided to illustrate the proposed two-stage RDT plans and compared with other one- and two-stage plans.
Comprehensive Cumulative Shock Common Cause Failure Models and Assessment of System Reliability
Lim, Tae-Jin ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 320~328
This research proposes comprehensive models for analyzing common cause failures (CCF) due to cumulative shocks and to assess system reliability under the CCF. The proposed cumulative shock models are based on the binomial failure rate (BFR) model. Six kinds of models are proposed so as to explain diverse cumulative shock phenomena. The models are composed of the initial failure probability, shape parameter, and the total shock number. Some parameters of the proposed models can not be explicitly estimated, so we adopt the Expectation-maximization (EM) algorithm in order to obtain the maximum likelihood estimator (MLE) for the parameters. By estimating the parameters for the cumulative shock models, the system reliability with CCF can be assessed sequentially according to the number of cumulative shocks. The result can be utilizes in dynamic probabilistic safety assessment (PSA), aging studies, or risk management for nuclear power plants. Replacement or maintenance policies can also be developed based on the proposed model.
Effect of the Erimental Design on the Determination of MTD in Phase I Clinical Trial
Lee, Yoon-Dong ; Lee, Eun-Kyung ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 329~336
The purpose of Phase I clinical trial is to identify the maximum tolerated dose with specific toxicity rate. The standard TER design does not guarantee the pre-specified toxicity rate. It depends on the dose-toxicity curves. Therefore it is necessary to check the expected toxicity rate of various dose-toxicity curves before we conduct clinical trials. We developed TERAplusB library to help this situation, especially in cancer research. This package will help design the cancer clinical trial. We can compare the expected toxicity rates, the expected number of patients, and the expected times calculated with various dose-toxicity curves. This process will help find the best clinical trial design of the proposed drug.
A Comparison of Quality Awards Program in the Major G-20 for Developing a Korean National Quality Award Model
Kim, Tai-Kyoo ; Kim, Youn-Sung ;
Journal of the Korean society for quality management, volume 39, issue 2, 2011, Pages 337~348
To implement total quality management(TQM), firms and institutions have strategically used quality awards models. In this paper we analyzed the national quality awards of G-20 members such as United States, Europe, Japan, Canada, Australia and Korea. There are three main points to analysis; First, "which type of model is good for Korea?", even though Korea already has adopted MBNQA model. Second, "Are the core values really different from each models?". And third, "Is there any difference in the criteria structure and value points system?" This study aims to design a National Quality Award which is good for the Korean companies and organizations. After analyzing the current quality awards models, we propose some suggestion about core value setting Korean-specific criteria development and value points system change.