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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 42, Issue 4 - Dec 2014
Volume 42, Issue 3 - Sep 2014
Volume 42, Issue 2 - Jun 2014
Volume 42, Issue 1 - Mar 2014
Selecting the target year
A Study on the Millennium Development Goals and Sustainable Development Goals of UN for Enhancing the Quality of Human Life
Park, Sung Hyun ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 529~542
DOI : 10.7469/JKSQM.2014.42.4.529
Purpose: Eight goals in Millennium Development Goals (MDGs) and temporary 12 goals in Sustainable Development Goals (SDGs) as the UN projects are investigated in detail. Methods: Investigation of statistics for life qualities, diseases, and life costs. Results: By examining the shortcomings of MDGs, temporary goals of SDGs are suggested. In addition, four countermeasures are recommended for further consideration. Conclusion: It is necessary to cooperate MDGs with more interest and prepare the new age for SDGs by compensating the shortcomings of MDGs. Finally, this paper suggests creative directions for SDGs which will be supposed to start in 2016.
A Modified Metric of FMEA for Risk Evaluation Based on ASIL of Safety System
Baek, Myoung-Sig ; Jang, Hyeon Ae ; Kwon, Hyuck Moo ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 543~562
DOI : 10.7469/JKSQM.2014.42.4.543
Purpose: The purpose of this study is to suggest a modified approach that compensates some shortcomings of RPN with relevant strength of ASIL for Safety System and suggests systematic and logical approach for FMEA. Methods: By comparing the objectives, determination procedures, and key conceptual differences of RPN and ASIL, a refined method of risk evaluation and a new risk metric are devised. Results: While the traditional FMEA provides only rough evaluation of relative risk for each failure, the proposed method compensates its shortcomings with relevant strength of ASIL and provides a more logical and practical procedure of risk evaluation. Conclusion: The new metric RPM provides not only a comparative priority rank but also the degree of physical seriousness. Besides, it may have even more benefits for various applications if the severity can be expressed as mone tary amount of losses.
Case of Integrated tolerance design process by Engineering tolerance design and 6 Sigma Tolerance Design - Spindle Motor For Optical Disc Drive -
Kim, Yongtae ; Ree, Sangbok ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 563~578
DOI : 10.7469/JKSQM.2014.42.4.563
Purpose: The purpose of this paper is integrated tolerance design process by advantages of engineering design and 6 sigma statistical tolerances design. Methods: Integrated tolerance design process can determine the goals by using engineer's experience and clarify tolerance by 6 Sigma statistical methods. Integrated design process can be applied by using non-linear simulations. Results: We applied integrated design process to the optical disc drive spindle motor and get good result. Conclusion: If this method is applied test method in the early stages of development, then Design can be reduced development time and cost.
Design and Analysis of Mixture Experiments for Ball Mix Selection in the Ball Milling
Kim, Seong-Jun ; Choi, Jai Young ; Shin, Hyunho ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 579~590
DOI : 10.7469/JKSQM.2014.42.4.579
Purpose: Ball milling is a popular process for obtaining fine powders in the part and material industry. One of important issues in the ball milling is to produce particles with a uniform size. Although many factors affect uniformity of particles, this paper focuses on the choice of ball diameter. Consider a ball milling where balls can be taken with three different diameters. The purpose of this paper is to find a ball mix which minimizes the average particle size. Methods: Ball diameters are selected as 10mm, 3mm, and 0.5mm. In order to find an optimum mixing ratio, the method of mixture experiments is employed in this paper. Taguchi's signal-to-noise ratio (SNR) for smaller-the-better type is also used to analyze experimental data. Results: According to the experimental result, SNR is maximized when the ball mix is taken as either 7:3:0 or 6:4:0. Such mixing ratios can be technically validated in terms of porosity reduction. Conclusion: The ball mixing technique presented in this paper provides a useful way to improve the production efficiency with a low cost.
A Study of Experimental Design for Unmanned Ground Vehicle Effectiveness Based on a Small Unit Combat Scenario
Lee, Jaeyeong ; Kim, Chongman ; Park, Keonyoung ; Kim, Junsoo ; Sin, Sunwoo ; Pyun, Jaijeong ; Bae, Sungmin ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 591~606
DOI : 10.7469/JKSQM.2014.42.4.591
Purpose: The purpose of this study is to design an experimental simulation model for evaluating the UGV(Unmanned Ground Vehicle) effectiveness in a small unit combat scenario. Methods: We design and build a simulation model to evaluate the combat effectiveness of UGV in a small unit combat scenario. In order to build a simulation model, we used AnyLogic software tool which has functional advantages to describe agent-based simulation model. As for the combat scenario, we applied the typical engagement of mechanized unit equal or lower than battalion level. Analysis process follows the three phases. 1) Design an agent based conceptual medel in a small unit combat scenario. 2) Build a simulation medel using AnyLogic tool. 3) Analyze the simulation results and evaluate the UGV effectiveness. Results: The UGV effectiveness was measured and presented as a numeric values. Those numeric values were represented as a MOE(Measure of Effectiveness) which was the blue survival ratio. Conclusion: We developed an agent based simulation model which can provide a pattern of change how UGV effectiveness varied depending upon the number of UGV in a small unit combat scenario. We also found that the UGV effectiveness grows in the given scenario as the number of UGV increases.
Two-Dimensional Assessment for Measurement System Analysis
Seo, Sun-Keun ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 607~616
DOI : 10.7469/JKSQM.2014.42.4.607
Purpose: This paper reviews popular measurement system indices and proposes a procedure for assessing a measurement system using two parameters with intraclass correlation and a factor for process capability. Methods: Gage Repeatability and Reproducibility(GR&R), precision-to-tolerance ratio(PTR), number of distinct categories, producer's and consumer's risks are employed to assess the measurement capabilities and discuss the relationships between measurement system metrics. Results: Two-dimensional plot by two parameters is presented to assess adequacy of the measurement system and process capability. A numerical example and previously studied case study are provided for illustration. Conclusion: The procedure proposed in this paper using two-dimension parameters provides a valuable procedure and helpful guidelines to quality and production managers in assessing the capabilities of a measurement system and choosing the needed actions to be the most benefit.
The impact of firm's intra-cooperation practice on NPD performance: with focus on the moderating effect of environmental uncertainty
Lee, Chang-Ki ; Jung, Uk ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 617~632
DOI : 10.7469/JKSQM.2014.42.4.617
Purpose: This study aims to explore the relationship between the focal firm's interdepartmental cooperation and new product development (NPD) performance with focus on the moderating effect of environmental uncertainty. The basic hypothesized model is that there are positively associated relationships. Methods: The proposed research model was tested using structural equation modeling with 601 responses from multi-functional and multiple respondents in Korean manufacturing firms. Multi-group SEM analyses were conducted to explore the degree to which the hypothesized model was equivalent for different levels of environmental uncertainty. Results: Interdepartmental cooperation between R&D and production is positively associated with NPD performance under both higher and lower environmental uncertainties, while one between R&D and marketing is positively associated under only higher environmental uncertainty. Conclusion: This paper determined that NPD performance is positively correlated with R&D-production cooperation in a focal firm, and the relationship between R&D-marketing cooperation and NPD performance is positively moderated by level of environmental uncertainty. Consequently, this study suggests that it is always important for firms to put much effort on R&D-production cooperation for a better NPD performance, while R&D-marketing cooperation should be enhanced especially under higher environmental uncertainty than lower.
A Study on Reliability Evaluation and Improvement Process of Aerospace Electronic Equipments using Operational Reliability-Cost Matrix
Jo, In-Tak ; Lee, Sang-Cheon ; Park, Jong-Hun ; Bae, Sung-Moon ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 633~646
DOI : 10.7469/JKSQM.2014.42.4.633
Purpose: The conventional predicted MFTBF by military standard has a wide discrepancy to that of real-world operation, which leads to overstock and increase operation cost. This paper introduces a analyzing frame using operational reliability and cost data to overcome the discrepancy, and provides reliability improvement process employing the analyzing frame. Methods: This paper suggests Reliability-Cost Matrix (R-C Matrix) and Operational Reliability & Cost Index (ORCI) as a tool for reliability evaluation. Results: KOREIP(KAI's Operational Reliability Evaluation and Improvement Process) is developed employing Reliability-Cost Matrix and Operational Reliability & Cost Index. Conclusion: KOREIP provides a process and its activities based on Reliability-Cost Matrix frame. The process and activities leads reliability improvement of aerospace electronic equipments by means of categorizing and follow-up action based on the concept of frame.
The Evaluation of Administrative Efficiency of the Korean University Using DEA Model
Yoo, Sungjin ; Kim, Yonghee ; Kim, Joohoon ; Choi, Jeongil ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 647~664
DOI : 10.7469/JKSQM.2014.42.4.647
Purpose: The purpose of this study was to evaluate administrative efficiency of the Korean university and to identify the factors which may affect on the efficiency of universities. In addition, last purpose of this study was to compare correlation among administrative, research and education model. Methods: The collected data through Higher Education in Korea were analysed using DEA (Data Envelopment Analysis). Furthermore, in order to provide the better accurate results by removing the bias of the results, this paper implements Bootstrap DEA. It also analyzed the causes of efficiency by Tobit Regression after setting the dependent variable as a proposed efficiency score and compared correlation analysis results between other models. Results: The results of this study are as follows; First, the Korean universities showed low administrative efficiencies. Second, efficiency of national universities are higher than it of private universities. Finally, the administrative and research education model have statistically significant correlation. However, usually many Korean universities focus their resources on education performance such as employment and rates to attract new students than research performances. Conclusion: This study shows that the administrative efficiency positively affects both research and educational efficiency. Approximately 70% of the Korean universities needs to improve their administrative efficiencies and to pay attention to enhance their poor services, low-level performances.
A Study on the Interrelationship among Service Quality, Customer Satisfaction and Customer Loyalty by Distribution Channel, in the Dehumidifier Goods Industry
Kim, Kyusik ; Ree, Sangbok ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 665~684
DOI : 10.7469/JKSQM.2014.42.4.665
Purpose: The purpose of this study was to test and verify on the interrelationship among Service Quality, and Customer Satisfaction and Customer Loyalty in the Humidifier Goods industry. Especially, we study on the relative importance of each CS variables by distribution channel. Nowadays, most of manufacturing companies are proceeding the product servitization, which is combined service contents with product characteristics in the field of manufacturing industries. Methods: We surveyed humidifier purchaser about the some of CS variables and analyzed it using SPSS 21.0 and AMOS 21.0 as a statistical analysis tool. We use the frequency analysis, confirmatory factor analysis, multi-regression analysis and structural equation modeling analysis for our empirical study. Results: As the result of study, we find that Service Quality(SQ) influence Customer Satisfaction(CS) and CS influence Customer Loyalty(CL). Also, we verify that CS works mediate interaction on the effects between SQ and CL. And there are the significant relative effect of SQ to Customer Satisfaction in some of distribution channel. Conclusion: Finally, we make certain that the market size of the Humidifier goods industry will be increased rapidly. And the distribution channe l is more important to medium and small-sized enterprise. So, we have to pay attention to the study on the distribution channel of the Humidifier goods industry. And then, we expect more researches and studies on Service Quality and Customer Satisfaction in the field of manufacturing industries.
Weighted Mean Squared Error Minimization Approach to Dual Response Surface Optimization: A Process Capability Indices-Based Weighting Procedure
Jeong, In-Jun ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 685~700
DOI : 10.7469/JKSQM.2014.42.4.685
Purpose: The purpose of this paper is to develop a systematic weighting procedure based on process capability indices method applying weighted mean squared error minimization (WMSE) approach to dual response surface optimization. Methods: The proposed procedure consists of 5 steps. Step 1 is to prepare the alternative vectors. Step 2 is to rank the vectors based on process capability indices in a pairwise manner. Step 3 is to transform the pairwise rankings into the inequalities between the corresponding WMSE values. Step 4 is to obtain the weight value by calculating the inequalities. Or, step 5 is to obtain the weight value by minimizing the total violation amount, in case there is no weight value in step 4. Results: The typical 4 process capability indices, namely,
are utilized for the proposed procedure. Conclusion: The proposed procedure can provide a weight value in WMSE based on the objective quality performance criteria, not on the decision maker's subjective judgments or experiences.
A Study on Scheme for driving the Win-Win Cooperation of Quality Management
Yoo, Choonburn ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 701~716
DOI : 10.7469/JKSQM.2014.42.4.701
Purpose: In the paper, I studied success factors and measures for win-win quality management for boosting corporate competitiveness through the achievement of high quality. Methods: As such, to that end, data of companies' win-win quality management activities and Cooperation performance were gathered. Also, I had a literature review and working staffs'opinions were gathered to develop items related to trade dependence, quality cooperation, and mutual trust and cooperation. To develop the questionnaire, sufficient literature survey was conducted, and advice was sought from experts of manufacturing companies which practice Win-Win Cooperation. Results: Based on these previous researches and analysis by structural equation modeling, among trade dependence factors, overall, other factors except financial dependence and some detailed factors were found to have a relatively significant influence relation. Conclusion: The findings of this study suggest that if individual organizations can construct an effective quality improvement system and positively pursue win-win activities, it will contribute greatly to achieving high quality and improving financial performance. However, given the time and regional limits of this study, more in-depth studies need to be conducted on measures for boosting quality competitiveness through Win-Win Cooperation.
Mobile Coupon Gift-giving Intention Model in Mobile Instant Messenger Environment
Yeo, Hyun-Jin ; Nan, Chun-Ji ; Suh, Yung-Ho ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 717~728
DOI : 10.7469/JKSQM.2014.42.4.717
Purpose: The purpose of this research is to develop a model tat explains the motivation of mobile coupon gift intention in mobile instant messenger service. Methods: This study utilized Structural Equation Model to clarify factors those influence mobile coupon gift intention under mobile messenger environment. Results: The research model in this study is verified with two hundreds sample data. This study found that mobile coupon gift-givers's giving intention is influenced by experimental and obligated motivation, price utility, social value of gift-giving, and perceived ease of use of the technology. Conclusion: This study verified five factors those influence to mobile coupon gift-giving intention. Although this study initially suggests and verify gift-giving intention model, we expect further research that related to other factors affecting the intention and other recent technology factors such as personal innovation and others.
Effect of Quality Management on the Performance: Focusing Manufacturing Companies Awarding Korean National Quality Awards
Han, Sang-Hoon ; Chung, Kyu-Suk ; Hong, Seung-Pyo ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 729~746
DOI : 10.7469/JKSQM.2014.42.4.729
Purpose: This paper study the effect of the quality management on the performance among the manufacturing companies awarding the Korean National Quality Award(NQA). Methods: The data for 34 manufacturing companies are surveyed by the 7-point Likert scale and empirically tested. Results: Even among the companies awarding NQA for their excellent quality management level there are significant differences in their performance by their quality management levels. In particular, leadership and human resources categories have greater impacts on the performance. Conclusion: Even though the company awarded NQA(KQMA: Korean Quality Management Award) for its excellent quality management level, it is necessary to improve the quality management level continuously. This result supports the necessity of KQGA(Korean Quality Grand Award) which is awarded for the companies which improve quality management levels significantly after awarding KQMA.
A Study on the Bayes Estimation Application for Korean Standard-Quality Excellence Index(KS-QEI)
Kim, Tai Kyoo ; Kim, Myung Joon ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 747~756
DOI : 10.7469/JKSQM.2014.42.4.747
Purpose: The purpose of this study is to apply the Bayesian estimation methodology for producing 'Korean Standard -Quality Excellence Index' model and prove the effectiveness of the new approach based on survey data by comparing the current index with the new index produced by Bayesian estimation method. Methods: The 'Korean Standard -Quality Excellence Index' was produced through the collected survey data by Bayesian estimation method and comparing the deviation with two results for confirming the effectiveness of suggested application. Results: The statistical analysis result shows that suggested estimator, that is, empirical Bayes estimator improves the effectiveness of the index with regard to reduce the error under specific loss function, which is suggested for checking the goodness of fit. Conclusion: Considering the Bayesian techniques such as empirical Bayes estimator for producing the quality excellence index reduces the error for estimating the parameter of interest and furthermore various Bayesian perspective approaches seems to be meaningful for producing the corresponding index.
A Case Study of Developing Rapid-Hardening Ultra-Low Temperature Adhesives by Mixture Design and Multiple Response Optimization
Byun, Jai-Hyun ; Seo, Pan Seok ; Shin, Ji Eun ; Lee, Lyun Gyu ; Yeom, Ji Hyun ;
Journal of the Korean society for quality management, volume 42, issue 4, 2014, Pages 757~768
DOI : 10.7469/JKSQM.2014.42.4.757
Purpose: In this paper we present a case study of developing fast curing adhesives for insulation material of LNG carriers using an extreme vertices design with four mixture components. Three material properties are considered - shear strength, viscosity, and tensile strength. In the optimization experiment, we used hardness instead of tensile strength due to shortage of specimens. Methods: We employ four-factor extreme vertices design with 19 runs and desirability function approach for simultaneously optimizing three responses. After selecting optimal condition of the mixture components, we do confirmation experiments to verify the reproducibility of the optimal condition under manufacturing circumstance. Results: Simultaneous optimal condition for the three responses, that is, shear strength, viscosity, and harness is obtained. At the optimal condition, confirmation experiments are executed in manufacturing circumstance. The variation for the shear strength is not satisfactory, which is due to the variation of the humidity. Conclusion: At the optimal condition three material properties are satisfactory. To reduce the variability for the shear strength, robust design is needed.