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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 38, Issue 4 - Dec 2010
Volume 38, Issue 3 - Sep 2010
Volume 38, Issue 2 - Jun 2010
Volume 38, Issue 1 - Mar 2010
Selecting the target year
A Comparison of Estimation Methods for Weibull Distribution and Type I Censoring
Kim, Seong-Il ; Park, Min-Yong ; Park, Jung-Won ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 480~490
In this paper, two estimation methods(least square estimation and maximum likelihood estimation) were compared for Weibull distribution and Type I censoring. Data obtained by Monte Carlo simulation were analyzed using two estimation methods and analysis results were compared by MSE(Mean Squared Error). Comparison results show that maximum likelihood estimator is better for censored data and complete data with more than 30 samples and least square estimator is better for small size complete data(less than and equal to 20 samples).
An Empirical Study on the Efficient Hospital Service Operation Management for the Reduction of Medical Errors
Lee, Don-Hee ; Choi, Kang-Hwa ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 491~503
This paper presents a research model, which identifies a relationship between medical error reduction, efficiency of organizational systems, and employee satisfaction with organizational support. The proposed model was tested through hypotheses, based on data collected from 210 respondents from the medical staff of large -sized (i.e., more than 500 beds) residential hospitals in cities of South Korea. The results of the study showed that medical error reduction is associated with corrective system and employee satisfaction with organizational support. Therefore, it is very important that organizations improve their employees' satisfaction by providing sufficient support (e.g., information support and sharing, work guide book, etc.) for their work. In addition, in organizational systems, the corrective system has positive relationship with medical error reduction. In terms of corrective procedures, leaders or managers can make improvements by providing and supporting a friendly work environment where errors may be reported without blame and discussed in order to be corrected.
Storage lifetime estimation of detonator in Fuse MTSQ KM577A1
Chang, Il-Ho ; Park, Byung-Chan ; Hwang, Taek-Sung ; Hong, Suk-Whan ; Back, Seung-Jun ; Son, Young-Kap ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 504~511
A fuze detonator comprising star shells is an important device so that its failure usually leads to failure of the shells. In this paper, accelerated degradation tests of RD1333 (lead azide) using temperature stress were performed, and then degradation data of explosive power for the detonator were analyzed to predict the storage lifetime of detonator. Degradation data analysis to estimate the storage lifetime is based on a distribution-based degradation process. Statistical distribution parameters of explosive power degradation measures at each time were estimated for each temperature level, and then reliability of the detonator for each accelerated temperature level was estimated using both time-varying distribution parameters and critical level of explosive power. Arrhenius model was applied to estimate storage lifetime of the detonator under the field temperature condition. Accelerated distribution-based degradation analysis to estimate storage lifetime is explained in detail, and estimation results are compared to field data of storage lifetime in this paper.
A Study on the Relationship between Innovation Activity and Business Results - Focused on the Small and Medium Manufacturing Enterprises -
Jang, Kwang-Soon ; Kim, Yong-Beom ; Koo, Il-Seob ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 512~520
This research is the analysis of using structural equation method in order to investigate the cause and effect relationship among the elements related to the innovation activity and the degree of the influence on that, and in order to make sure the sequential processes into the meaningful management performance for improving the efficiency and effectiveness of a various of innovation activities performing in the domestic small and medium enterprise. To perform this research, we surveyed CEOs, managers, workers working for manufacturing business, we distributed 250 sheets totally and withdrew 206 sheets. we analyzed 169 sheets that we could use for this research using SPSS 15.0 and AMOS 18.0 program.
Green Six Sigma for Green Growth Implementation
Kim, Dong-Chun ; Hong, Sung-Hoon ; Shin, Wan-Seon ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 521~530
Global regulatory pressures relating climate change and environmental responsibility are asking companies to find out the best way for sustaining their continuous business growths. It could be known that inadequate management for environmental issues are bad for business, negatively affecting brand image, causing unnecessary losses and costs for environmental preservation. For this reason, environmentally conscious green business growth has been recognized as an essential requirement for a company to stay in business. Many companies are looking for green business opportunities of improving their environmental and financial results, and struggling with how green fits into their business. In this paper, the Green Six Sigma, an environmentally conscious Six Sigma methodology, is presented as a way to find solutions for green growths. The Six Sigma is known as a disciplined, data-driven approach and methodology for achieving world-class performance in any process from manufacturing to transactional. In chronological order, the Six Sigma has been evolved from Motorola's quality-oriented methodology to GE's cost-oriented lean approach, and is being evolved and developed as an environment-oriented green growth approach. There is no doubt that the Green Six Sigma, as an engine of green growth, is a power tool for achieving competitive business performance and reducing the impact on the environment.
A Study on Mega-Y Project Innovation Activities
Sung, Su-Gyeong ; Kim, Joon-Seok ; Byun, Jai-Hyun ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 531~539
Mega-Y project is very important for a company to gain a competitive advantage in markets or to achieve drastic change in the internal processes. It stems from the company strategy and annual management goals or key performance measures, and is proceeded by the cross-functional team. This paper presents the success factors and implementation process of the Mega-Y projects. The implementation process is presented in 5 steps, including project selection, cross-functional team building, establishment of the master plan, development and execution of sub-projects, and project completion. A case study on the cost reduction project of aircraft development is presented to help for the practitioners to deploy the implementation process introduced in this paper.
Optimum target values for manufacturing processes when drifting rate in the process mean is normally distributed
Lee, Jae-Hoon ; Park, Tae-Ho ; Kwon, Hyuck-Moo ; Hong, Sung-Hoon ; Lee, Min-Koo ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 540~548
We consider the problem of selecting the most profitable initial process mean and length of production cycle for manufacturing processes subject to a constant linear trend during the same cycle that varies after resetting the processes. Assuming that the quality characteristic of interest is normally distributed, the optimum initial process mean and the length of production cycle are jointly obtained by minimizing the expected loss per unit time. We assume that the quality loss function due to the deviation from the target value is quadratic and resetting loss is constant. We consider both cases of symmetric and asymmetric quality loss function. An illustrative example is given and sensitivity analysis performed.
The Relationship between Service Quality and Satisfaction of E-government Self Service Technology (SST)
Yoo, Weon-Sang ; Kim, Jonathan S. ; Cho, Sung-Bin ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 549~560
The role and use of self-service technology (SST) becomes increasingly more important in the e-government service area. Users evaluate the service quality of SST in their everyday life and this evaluation works as a guideline of how SST should evolve for user satisfaction. This study classifies the types of SST according to its purpose and interface, and then investigates the causal relationship of service quality and user satisfaction. In the process, we introduced the three dimensions of service quality - usability, information, and empathy. The analysis results indicate that the three service quality dimensions have positive influence on user satisfaction. While the relationship between information and empathy is significant, that between usability and empathy is not significant. Implications and future research directions are also discussed.
A Study on the Activities of Management Quality and Management Performance of Public and Private Organizations in the Metropolitan area
Chung, Young-Bae ; Park, Hyung-Geun ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 561~579
This study is to devide seven subject organs in the metropolitan area by the Malcolm Baldrige's basis which is global standard of management quality to grip the each activities of management quality, to conduct a survey of the management quality of each organ or persons in charge of similar works. Generally, those surveyed show to recognize on the management quality and to apply to real work. Those surveyed show to be able to improve positively quality and service level in case of appling to work of management quality, and to be positive reaction on the contribution about management performance. This study indicates the predominant view which the researcher have to establish the its vision clearly and to promote in a lump success factors of management quality, and the chief executive have to take a firm faith for it. This study also suggest that recognizing positively about its vision and strategy about present condition of management quality activities is one of the implements which not only judge but also establish a good system of an organization. And there has a significant difference between Public and Private Organizations that those evaluate management quality conducts better management performance. However management quality activities shows to mostly agree to be influencing positively to management performance.
An optimal tolerancing of the mixture ratio with variance considerations
Kim, Seong-Jun ; Park, Jong-In ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 580~586
Performance variations in mixture products such as medicine, food, and chemicals can be caused by their own subcomponents. For instance, a discharge capacity of a lithium-ion battery depends upon the mixture ratio of ethylene, dimethyle, and ethyle-methyle, all of which are subcomponents of an electrolyte solution in the battery. Thus it is crucial to determine tolerances of the mixture ratio in order to maintain the product quality at a desired level. This paper is concerned with the tolerance design of the mixture ratio. In particular, minimizing variance around the mixture ratio is adopted as a decision criterion in this paper. An illustrative example with multiple quality characteristics is given as well.
Comparative Performance of the Size Determination Method Using Quality Loss Function
Lim, Sung-Uk ; Kang, Hyoun-Jung ; Park, Young-Taek ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 587~592
This paper deals with the performance evaluation of determining production size specifications. A customer who does not find the size specification he or she wants may purchase rather a larger or smaller one, but the purchasing desire decreases as the difference between the required and the prepared sizes increases. Introducing a generalized quality loss function which reflects how much the purchasing desire changes according to the difference, Park and Kim(1992) formulated a mathematical model for determining the size specifications so as to minimize the expected loss. Afterward the model has been applied to the determination of sizing system for mail order clothing and brassiere (Lee and Choi, 1996; Chun, et.al., 1996). The performance of the size determination method proposed by Park and Kim is evaluated in this paper. Usually the intervals between two successive size specifications are determined to be equal, but the size determination method compares favorably with the equidistance case, and more favorably if the population distribution is more skewed.
Analyzing the Service Blueprint for Aircraft Cabin Service
Lee, Ji-Min ; Kim, Youn-Sung ; Lee, Dong-Won ;
Journal of the Korean Society for Quality Management, volume 38, issue 4, 2010, Pages 593~600
This study aims to explore the service activities in the aircraft cabin service, develop the service process structure, and design a more efficient service delivery system in Korean airline industry. We prepare the architectural drawings of the basic components in providing the cabin service using the service blueprint technique and service process perspective. Through the case study largely based on our own research and long-time work experiences in the airline industry, we propose service failure points as well as customer waiting points. This study will be helpful for managers at all levels to use the service blueprint strategically or at a shop-floor level and improve their cabin service quality.