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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
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 33, Issue 4 - Dec 2005
Volume 33, Issue 3 - Sep 2005
Volume 33, Issue 2 - Jun 2005
Volume 33, Issue 1 - Mar 2005
Selecting the target year
Development of VSI Synthetic Control Chart
Song, Suh-Ill ; Park, Hyun-Kyu ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 1~10
This paper develops a new VSI
synthetic control chart that considers convenience of use in the field, and perception of change of process applying VSI techniques to synthetic control chart, simultaneously. We found the optimal sampling interval and various control limit factor of the suggested chart using markov chain. Comparison and analysis is carried out between synthetic VSI
chart and other chart in the statistical aspect;
control chart, VSI
chart, another synthetic chart. In case that the process follows normal distribution, the proposed VSI
synthetic control chart in detecting process mean shift showed the best performance in aspect of statistical performance, regardless of control limit L of CRL/S control chart.
QFD and Conjoint Analysis for Cybe-mentoring System for Female College Students
Sohn, So-Young ; Chang, In-Sang ; Lee, Ji-Soo ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 11~21
Providing female students with competitive advantages in their social activity became one of the important issues of the college education in Korea. Thereupon, for the purpose of more effective and systematic support for the female students, many universities have adopted the cyber mentoring system. However, customers' requirements for such cyber mentoring systems are not reflected at the initial stage, resulting in some inefficient performances. In this study, we propose a desirable cyber mentoring system reflecting female students' requirements by using QFD and conjoint analysis. We expect that the proposed system will help to cultivate high quality female resources in a more effective way.
A Comparative Study of SPC and EPC with a Focus on Their Integration
Lee, Myeong-Soo ; Kim, Kwang-Jae ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 22~31
With the common objective to improve process productivity and product quality, statistical process control (SPC) and engineering process control (EPC) have been widely used in the discrete-parts industry and the process industry, respectively. The major focus of SPC is on process monitoring, while that of EPC is on process adjustment. The emergence of the hybrid industry necessitates a synergistic combination of the two methods for an effective process control. This paper investigates the existing studies on SPC, EPC, and the integration of the two methods. This paper also presents future research issues in this field.
A Six Sigma Application Case Study to Improve a Rolled Throughput Yield of an Automobile Steering Wheel Manufacturing Process
Park, Jong-In ; Lee, Dong-Kyu ; Byun, Jai-Hyun ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 32~41
This paper presents a six sigma application case study for an automobile steering wheel manufacturing process using rolled throughput yield improvement activity. Hidden factory and first pass yield concept is introduced and a DMAIC procedure is implemented to maximize the first pass yield. The result of the six sigma project amounts to the reduction of failure cost of 1.2 billion won per year in the steering wheel manufacturing process. This paper can benefit six sigma practitioners in some ways.
An Analysis of Success Factors of New Product Plan in DFSS
Lee, Kang-Koon ; Ree, Sang-Bok ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 42~50
The IMD(International Institute for Management Development) report said that national competitiveness of Korea is declined in this year. The main reason for Korea's decline is a largely related to the weakness of corporate competitiveness. The new product development is a necessary ingredient for improving the national competitiveness. The analysis of changing of technologies and customer's needs is needed for successful new product development. In this paper, We found out successful factors of the project by use of DFSS(Design for Six Sigma) and proved them by case study of K-company. Result from this paper is applied to the new product development planning step for K-company and it made a great success rate. It is expected that the result is applied to the same kind industries.
An Investigation on the Demand for Development and Propagation of Reliability Manuals
Kim, Myung-Soo ; Lee, Dhong-Ha ; Cha, Sang-Won ; Park, Chang-Gyu ; Oh, Geun-Tae ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 51~63
This paper presents the investigation on the demand of domestic companies for reliability. For persons undertaking reliability tasks of 224 companies, the questionnaire study is made to investigate the importance and necessity of reliability, needs and priorities of reliability manuals, and the appropriate scheme to propagate them by internet and telephone. By analyzing the responses according to fields of industry, types of manufacturing, numbers of employees, and total sales, we obtained the useful informations for developing and propagating reliability manuals.
Determination of Multiplicative Utility Function Based on the Pair-wise Comparisons
Kim, Kyung-Mo ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 64~72
The ever increasing demand for enhanced competitiveness of engineered products requires "designing-in-quality" strategies that can effectively and efficiently incorporate concepts of uncertainty and quality into design. Multi-attribute utility function is commonly used to represent the decision-maker's preference on multiple design attributes under conditions of uncertainty and risk. One of the major issues in implementing this approach concerns the generation of appropriate utility function, especially in a complex engineering design environment. Typically, the decision maker's preference is revealed through lottery questions rather than being structured on the deductive reasoning to reflect the nonlinear tradeoffs among the attributes. The use of such intuitive procedures can lead to inexact preference information that may result in inaccuracy and rank reversal problems. This paper presents an alternative procedure based on the pair-wise comparisons between design alternatives towards a consistent preference presentation in assessing multiplicative utility function. The effectiveness of the overall procedures is tested with the aid of an injection-molding process design for a capacitor can and the results are discussed.
Multiresponse Optimization in Response Surface Analysis : A Method by Minimization of Weighted Sum of Estimates of Expected Squared Relative Errors
Rheem, Sung-Sue ; Lee, Woo-Sun ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 73~82
This article proposes a practical approach, which is based on the concept of the expected squared relative error, that can consider both the prediction quality and the practitioner's subjectivity in simultaneously optimizing multiple responses. Through a case study, multiresponse optimization using the expected squared relative error approach is illustrated, and the SAS program to implement the proposed method is provided.
Resistant Poisson Regression and Its Application
Huh, Myung-Hoe ; Sung, Nae-Kyung ; Lim, Yong-Bin ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 83~87
For the count response we normally consider Poisson regression model. However, the conventional fitting algorithm for Poisson regression model is not reliable at all when the response variable is measured with sizable contamination. In this study, we propose an alternative fitting algorithm that is resistant to outlying values in response and report a case study in semiconductor industry.
A Case Study of Six Sigma Project for Improving TIP Life Time in a Spot Welding Process
Lee, Min-Koo ; Kwag, Hyo-Chang ;
Journal of the Korean society for quality management, volume 33, issue 1, 2005, Pages 88~98
This paper considers a six sigma project for improving the TIP life time in a spot welding process. The project follows a disciplined process of five phases: define, measure, analyze, improve, and control. A process map is used to identify process input and output variables. Nine key process input variables are selected by using C&E matrix and FMEA, and finally four vital few input variables are selected from analyze phase. The optimum process conditions of the vital few input variables are jointly obtained by maximizing TIP life time using DOE and alternative selection method.