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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 27, Issue 4 - Dec 1999
Volume 27, Issue 3 - Sep 1999
Volume 27, Issue 2 - Jun 1999
Volume 27, Issue 1 - Mar 1999
Selecting the target year
A Study on Strategy for Improving Health Care Service through Quality Function Deployment
Kim, Soon-Yi ; Choi, Jae-Ha ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 1~19
It is truism to say that today's customers demand high quality products and services; nevertheless, nowhere is this more prevalent than in the medical industry. Korea's globalization has increased it's citizen's awareness of greater life expectancies and medical improvements in other regions of the globe. Therefore, it is universally essential that in order to be successful in the medical industry, vendors must meet the ever increasing demands of better educated customers. The purpose of this study was twofold: 1) The first objective was discover what health care services are in demand and the quality factors related to these services. 2) The second objective was to determine a strategy for improving health care service through quality function deployment(QFD). One hundred and ninety-five respondents were randomly selected and asked to fill out a questionnaire after having undergone treatment at a medical clinic, located in Daejon, South Korea. The questionnaire was designed to obtain information about both he clients' satisfaction with, and their sense of the value of the medical treatment they received. Penalty-reward analysis and QFD were used to interpret the survey results and to deploy the collective voices of the customers. The results of the penalty-reward analysis illustrated that the 'communication' service quality factor was classified into an excitement factor that incurs no penalty if not achieved but adds value if the requirement is exceeded. As a result of the QFD analysis on the 'communication' service quality factor, eleven strategic alternatives were prioritized, and isolated a vital service quality characteristic. This characteristic can be implemented to bring value-added changes for the improvement of health care services.
A Study on the Dimensions of Quality of New Products
Kang, Jun-Mo ; Park, Young-Taek ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 20~46
Many researches have concluded that product advantage or superiority is the most important factor for the commercial success of new products. However, the specific dimensions of product advantage have not been studied as yet. Based on a survey of newly introduced products in recent years, we suggest the eight dimensions of quality of new product: function, time, limitation, usability, problem prevention, economy, maintainability, nativeness. The dimensions and their constituents are explained with examples.
A comparison of the traditional scoring system with the efficiency measuring system for evaluating the TQM activities
Yoo, Han-Joo ; Lee, Jeong-Dong ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 47~56
In this paper, we analyzed two methodologies to evaluate the total quality management activities comparatively. One of them is the traditional scoring system (TSS) by analytic hierarchy process (AHP) and the other is the efficiency measuring system (EMS) by data envelop analysis (DEA). It is demonstrated that the index by TSS and the efficiency index by EMS are not correlated. Also, the efficiency index by EMS in terms of company characteristics such as the size of company and ISO certifications is different from the index by TSS. The result implies that to evaluate the quality activities by EMS is needed as a supplementary methodology.
Effects of Transformational and Transactional Leadership on Followers' Empowerment and Creativity
Yoo, Seung-Dong ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 57~80
This research uses measures of transformational and transactional leadership to examine its impact on subordinate psychological empowerment and on his/her creativity in 3 resort complexes. For a total of 462 respondents, followers' sense of increased empowerment and creativity are significantly and positively related to the transformational leadership behaviors of their immediate superior, including charismatic attributes and behaviors, individual consideration, and intellectual stimulation. Two of the three transactional leadership measures, including contingent reward and management-by-exception(active), correlate positively with the followers' perceived empowerment and creativity, but the rest one, management-by-exception(passive), negatively with them. The impact of all of the three measures of transformational leadership and the two of transactional leadership(i.e., contingent reward and active management-by-exception) on subordinate creativity is partially mediated by the subordinate empowerment.
Criticism and Guideline for the Use of Process Capability Index
Baik, Jai-Wook ; Jo, Jin-Nam ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 81~100
Process capability indexes are widely used in industries. Nevertheless, important statistical issues that deal with the appropriate use of process capability indexes have only appeared in the technical literature and are thus unknown to many users. In this paper we will first review various kinds of process capability indexes and then try to understand how much uncertainty is associated with them in relation to the assumption of normal distribution, the estimate of
, the sampling error, the size of number of observations available and the presence of data correlation. Finally, we will propose a proper use of process capability indexes in an effort to assess a complex process.
Robust Design of a Discrete System Using Taguchi's Standard Signal-to-Noise Ratio
Kim, Seong-Jun ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 101~111
The purpose of Taguchi's robust design lies in quality improvement by making the performance of a system robust against noise. Robust design with continuous performance characteristics has been the subject of much interest. However relatively little work has been done for discrete characteristics such as 0-1, good-medium-bad, etc. This paper is concerned with robust design of a discrete dynamic system. We first investigate the Taguchi method for robust design with discrete dynamic characteristics and discuss his standard error probability (SEP). Then we propose a generalized SEP, which makes it possible to encompass a wider class of robust design problems. An illustration is also given by example.
Adaptive Robust Regression for Censored Data
Kim, Chul-Ki ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 112~125
In a robust regression model, it is typically assumed that the errors are normally distributed. However, what if the error distribution is deviated from the normality and the response variables are not completely observable due to censoring? For complete data, Kim and Lai(1998) suggested a new adaptive M-estimator with an asymptotically efficient score function. The adaptive M-estimator is based on using B-splines to estimate the score function and simple cross validation to determine the knots of the B-splines, which are a modified version of Kun( 1992). We herein extend this method to right-censored data and study how well the adaptive M-estimator performs for various error distributions and censoring rates. Some impressive simulation results are shown.
Simultaneous Optimization of Multiple quality Characteristics to Robust Design using Desirability Function
Kwon, Yong-Man ; Park, Byung-Jun ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 126~142
Robust design is an approach to reducing performance variation of quality characteristic values in quality engineering. Taguchi has an idea that mean and variation are handled simultaneously to reduce the expected loss in products and processes. Taguchi parameter design has a great deal of advantages but it also has some disadvantages. The various research efforts aimed at developing alternative methods. In the Taguchi parameter design, the product-array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined-array approach, was suggested by Welch et. al. ( 1990) and studied by others. In these studies, only single quality characteristic was considered. In this paper we propose how to simultaneously optimize multiple quality characteristics using desirability function when we used the combined-array approach to assign control and noise factors. An example is illustrated to show the difference between the Taguchi's product-array approach and the combined-array approach.
A New Test for New Better than Used Class
Kim, Hwan-Joong ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 143~151
In this thesis, a new test statistic is proposed for testing exponentiality against New Better than Used (NBU) alternatives. Our test statistic, which is based on a quadratic function of the order statistics from the sample, is readily applied in the case of small sample. Also, Our test statistic is more simple than the test statistic of Hollander and Proschan(1972).
Nonparametric Reliability Estimation in Strength-Stress Model: B-Spline Approach
Kim, Jae-Joo ; Na, Myung-Hwan ; Lee, Kang-Hyun ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 152~162
In this paper we develope a new nonparametric estimator of the reliability in strength-stress model. This estimator is constructed using the maximum likelihood estimate of cumulative failure rate in the class of distributions which have piecewise linear failure rate functions between each pair of observations. Large sample properties of our estimator are examined. The proposed estimator is compared with previously known estimator by Monte Carlo study.
Hierarchically Associated Quality Performance Measurements in Quality Management
Shin, Wan-Seon ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 163~182
Performance measurement is increasingly becoming a vital issue for promoting quality management within an organization. This research proposes a new performance measurement approach, called the Hierarchically Associated Performance Measurement, for the organizations which emphasize long term quality th겨st through a balanced interface between the quality efforts of various units. The proposed approach is unique in that it considers relationships between internal quality activities and national quality award criteria and that it identifies and utilizes the quality responsibilities of functional units in order to encompass organizational roles in the evaluation process. The approach is illustrated via a numerical evaluation of a fictitious organization.
A Study on the Environment Management System of Procter & Gamble
Kim, Hyun-Soo ; Park, Young-Taek ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 183~200
ndustrial development began to cause serious pollution problems. Most of the environmental problems are related with operations of industrial companies. Environmental problems should be considered at all the stages of business activities or processes, from product design to new forms of packaging, from marketing to disposal. This paper suggests that how to cope with environmental issues is an important factor in the global market, and environmental management has become one of the key success factor. Through the survey of P&G's environmental management, it is intended to provide a chance to benchmark or give a cue on how to conduct the environmental management.
A Development of the Management Standard for Effective Control of Measuring Instruments
Lee, Sung-Woong ; Kim, Soo-Dong ; Kim, Jung-Sik ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 201~217
Industrial Measuring Instrument is a general name of equipments or tools for measuring and weighing. Inaccurate measuring instruments produce inferior goods in spite of excellent experts, good materials and wonderful equipments. Three characteristics are important for measuring instruments: choosing the proper instruments for measuring, using them properly and managing them to keep accuracy and precision. The purpose of this thesis is to develope the management standard for effective control of measuring instruments by analysing the problems and the management conditions of 100 PPM certified companies out of the domestic small and medium manufacturing industry, which steadily carry out quality control.
The Parameter Design of Multiple Characteristics with Engineer's Opinions
Cho, Yong-Wook ; Park, Myeong-Kyu ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 218~236
The purpose of parameter design is to determine optimal settings of design parameters of a product or a process such that the performance characteristics of a product exhibit small variabilities around their target values. Taguchi made significant contributions in this area. However, his analysis of the problem focused on only one performance characteristic or response, although in product and process design, multiple characteristics are more common. The critical problem in dealing with multiple characteristics is how to compromise the conflict among the selected levels of the design parameters for each individual characteristic. In this paper, Methodology using SN ratio optimized by univariate technique is proposed and a parameter design procedure to achieve the optimal balance among several different response variables is developed. Existing case studies are solved by the proposed method and the results are compared with ones by the sum of SN ratios, the expected weighted loss, the desirability function, and EXTOPSIS model.
A Study on Process Optimization Using Partial Least Squares Response Surface Function
Park, Sung-Hyun ; Choi, Um-Moon ; Park, Chang-Soon ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 237~250
Response surface analysis has been a popular tool conducted by engineers in many processes. In this paper, response surface function, named partial least squares response surface function is proposed. Partial least squares response surface function is a function of partial least squares components and the response surface modeling is used in either a first-order or a second-order model. Also, this approach will have the engineers be able to do the response surface modeling and the process optimization even when the number of experimental runs is less than the number of model parameters. This idea is applied to the nondesign data and an application of partial least squares response surface function to the process optimization is considered.
Performance Analysis and Evaluation for Flexibility of Manufacturing Systems in QM era
Lee, Seung-Hyun ; Yoo, Wang-Jin ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 251~262
In the automated manufacturing systems, the problem regarding how to make production activities flexible is even more important and critical than that regarding how to product large quantities, and the more flexible, if possible, the manufacturing system is, the more competitiveness and profitable factors it gets. This research, therefore, concentrated on establishing the flexibility and evaluating performance on the manufacturing system, operational flexibility is considered because of enabling the manufacturing system to get both the improvement of production rate and the adaptive ability of environment changes. For it, we used the analytical tool, GSPNs, which is a kind of timed Petri-Nets. GSPNs is competent enough to consider practical situations just like operation priorities, machine failure, randomness, concurrency and so on. Through the GSPNs analysis, it is confirmed that in the manufacturing system with operational flexibility is compatible with the traditional performances such as production rate or mean waiting time.
An Empirical Study on Faults Prediction for Large Scale Telecommunication Software
Park, Young-Sik ; Yoon, Byeong-Nam ; Lim, Jae-Hak ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 263~276
In this paper, we consider the change request data collected from the system test of a large-scale telecommunication software and analyze the types and causes of failures. And we develop statistical models that incorporate a functional relation between the faults and some software metrics. To this end, we consider three possible regression models including a stepwise regression model and two nonlinear models. Three developed models are evaluated with respect to the predictive quality. We also discuss the advantage of proposed models and the application of our model to a new project.
Development of Statistical Software for the Education of Statistics at the Introductory Level based on Excel
Cho, Sin-Sup ; Song, Moon-Sup ; Lee, Yoon-Mo ; Seong, Byeong-Chan ; Yoon, Young-Joo ; Lee, Hyun-Bu ;
Journal of the Korean Society for Quality Management, volume 27, issue 2, 1999, Pages 277~290
In this paper we compare several statistical packages and propose basic requirements of the package for the efficient education of statistics. We develop a statistical software, KESS, based on Excel. KESS provides all the input menus and output results in Korean.