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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 36, Issue 4 - Dec 2008
Volume 36, Issue 3 - Sep 2008
Volume 36, Issue 2 - Jun 2008
Volume 36, Issue 1 - Mar 2008
Selecting the target year
Statistical Inference of Shelf -life in Drug's Stability Study
Kim, Tai-Kyoo ; Park, Sang-Gue ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 1~6
The purpose of stability study of pharmaceutical products is to establish the shelf life based on the change of the quality with time. Stability study generally consists of a random sample of dosage units from a batch or several batches placed in a storage room and periodically assayed for their drug content. The statistical methods of assessing the shelf-life of drug in the market is considered with the current KFDA regulations. An illustrated application to some stability data from the pharmaceutical industry is also presented with the discussion.
A Comparative Study on the Design of Adaptive Control Charts
Lim, Tae-Jin ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 7~19
During the past two decades, a huge amount of research on adaptive control charts has been accomplished. Especially, variable sampling interval (VSI), variable sample size (VSS), and variable sample size and sampling interval (VSSI) charts have been focused by many researchers due to their simplicity and efficiency. On the other hand, the difference among notations, assumptions, methodologies may cause confusions in per forming further studies or practical implementations. This research analyses and compares diverse models so as to provide a unified view on statistical and economical characteristics. As a result, we perform comparative study on economical design models of VSI, VSS, and VSSI charts, respectively, We also present practical guidelines to utilize those adaptive control charts.
The Effects of TQM Factors on Business Results between Korean and Japanese Manufacturing Companies
Lee, Myung-Yong ; Chung, Kyu-Suk ; Kim, Jong-Soon ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 20~30
Nowadays many countries in the world have been implementing TQM which is originated from Japanese management style. There are many research results that TQM has a positive influences on business results. But the levels of implementing TQM are different by countries. The domestic competitors and the customers, who have the great influences on business results are also quite different. Therefore the levels of TQM in some company and the influences of TQM factors on business results are supposed to be different by countries. The situations of the countries lying on the more developed stage will be a good benchmarks for the countries on following stages. There are few researches on this cross countries analysis. This paper do the empirical study on the effects of TQM factors on business results between Korean and Japanese small or medium sized manufacturing companies. First, the levels of TQM are compared between countries. Second, what key success factors among TQM ones are for business success is analyzed for each country and compared between two countries. This study will help to plan the road maps in TQM journey for the Korean companies.
Analyses of Accelerated Life Tests Data from General Limited Failure Population
Kim, Chong-Man ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 31~39
This paper proposes a method of estimating the lifetime distribution at use condition for constant stress accelerated life tests when an infant-mortality failure mode as well as wear-out one exists. General limited failure population model is introduced to describe these failure modes. It is assumed that the log lifetime of each failure mode follows a location-scale distribution and a linear relation exists between the location parameter and the stress. An estimation procedure using the expectation and maximization algorithm is proposed. Specific formulas for Weibull distribution are obtained. An illustrative example and the simulation results are given.
The Optimal Operating Planning of Convention Systems for Service Quality
Kim, Chang-Dae ; Moon, Jae-Young ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 40~48
The purpose of this study is to rationally manage service facilities of convention center. This study is to develop the algorithm to consider optimal assignment and optimal operation system planning for convention center. The scheduling algorithm of this study develops through constructing the mathematical model and analyzing the mathematical structure of variables and constraints in model. The scheduling algorithm develops to consist eight stage of optimal operation planning and five stage of optimal assignment planning. Especially, this study indicates that optimum answer through mathematical model and results of algorithm is nondiscrimination.
The Analysis of the IT-Outsourcing Moderated by Partnership Types
Yeon, Keyong-Hwa ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 49~61
The classical IT-Outsourcing studies have focused on the factors which a company decides for the IT-Outsourcing strategy. But the main concerns of recent researches are more about the Critical Success Factors determining the Success of the IT-Outsourcing service. Especially, the factors, which enhance the level of Success during and after the implementation of IT-Outsourcing services, are the main field of the recent researches. The study about the Partnership between Outsourcer and Outsourcee are also one of the most frequently researched themes. The result of these studies shows us that the "Reliability" and "Communication" are the main factors for the successful partnership. In this paper we try to find out how the IT-Outsourcing factors (independent variable) have influenced on the Success of IT-Outsourcing strategy (dependent variable) with 4 kinds of parameters. These moderate variables are the 4-types of Partnership by FORT, that is, "Support", "Reliance", "Alignment" and "Alliance".
Development of a BFSS Road-map
Ha, Sang-Won ; Kwon, Hyuck-Moo ; Hong, Sung-Hoon ; Kim, Chong-Man ; Lee, Min-Koo ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 62~71
Since the Six Sigma strategy was first introduced to Motorola in 1987, it has been taken as an important business strategy to strengthen the competitiveness of leading companies in the global competitive environment. To keep growing and thriving, modern companies need to develop new businesses and find new applications while keeping existing ones on track. This situation necessitates a more effective way of discovering an optimal scenario in a business. In this paper, we propose a Business for Six Sigma (BFSS) road-map to create new businesses. BFSS consists of five macro phases: define, identify, analyze, evaluate, and implement. We also provide an example of F electronics, a Korean electronics component manufacturer, which actually applied the BFSS road-map to analyze marketability, technological plausibility and economic potential/success in connection with its new product development.
A Comparison of Classification Methods for Credit Card Approval Using R
Song, Jong-Woo ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 72~79
The policy for credit card approval/disapproval is based on the applier's personal and financial information. In this paper, we will analyze 2 credit card approval data with several classification methods. We identify which variables are important factors to decide the approval of credit card. Our main tool is an open-source statistical programming environment R which is freely available from http://www.r-project.org. It is getting popular recently because of its flexibility and a lot of packages (libraries) made by R-users in the world. We will use most widely used methods, LDNQDA, Logistic Regression, CART (Classification and Regression Trees), neural network, and SVM (Support Vector Machines) for comparisons.
A Study for Six Sigma Focused on Knowledge Creation
Park, Sung-Hyun ; Park, Sang-Wook ; Oh, Jin-Ho ; Park, Da-Hyoun ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 80~88
The 21st century is often called the knowledge-based information society. A new term, Data Technology (DT), which handles data and creation of information, is defined. A few important concepts of DT which are related to Six Sigma are described. Also some characteristics of Knowledge Management (KM) which provide new knowledge are explained. As a new direction of Six Sigma, Six Sigma Focused on Knowledge Creation (SSFKC) is suggested. The way of implementation of SSFKC and its relationship with DT and KM are elaborated.
A Study on Software Reliability Assessment Model of Superposition NHPP
Kim, Do-Hoon ; Nam, Kyung-H. ;
Journal of the Korean society for quality management, volume 36, issue 1, 2008, Pages 89~95
In this paper, we propose a software reliability growth model based on the superposition cause in the software system, which is isolated by the executed test cases in software testing. In particular, our model assumes an imperfect debugging environment in which new faults are introduced in the fault-correction process, and is formulated as a nonhomogeneous Poisson process(NHPP). Further, it is applied to fault-detection data, the results of software reliability assessment are shown, and comparison of goodness-of-fit with the existing software reliability growth model is performed.