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위치모수를 이용한 로버스트 $\bar{x}$ 관리도의 설계
정영배,김연수,Chung, Young-Bae,Kim, Yon-Soo 한국산업경영시스템학회 2014 한국산업경영시스템학회지 Vol.37 No.1
Control charts are generally used for process control, but the role of traditional control charts have been limited in case of a contaminated process. Traditional $\bar{x}$ control charts have not been activated well for such a problem because of trying to control processes as center line and control limits changed by the contaminated value. This paper is to propose robust $\bar{x}$ control charts which is considering a location parameter in order to respond to contaminated process. In this paper, we consider $\bar{x}_{\alpha}$, that is trimmed rate; typically ten percent rate is used. By comparing with p, ARL value, the responding results are decided. The comparison resultant results of proposed two control charts are shown and are well contrasted.
로버스트 추정에 근거한 수정된 ${\bar{x}}$-s 관리도의 설계
정영배,김연수,Chung, Young-Bae,Kim, Yon-Soo 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.1
Control charts are generally used for process control, but the role of traditional control charts have been limited in case of a non-contaminated process. Traditional ${\bar{x}}$-s control chart has not been activated well for such a problem because of trying to control processes as center line and control limits changed by the contaminated value. This paper suggests modified ${\bar{x}}$-s control chart based on robust estimation. In this paper, we consider the trimmed mean of the sample means and the trimmed mean of the sample standard deviations. By comparing with ARL value, the responding results are decided. The comparison resultant results of traditional control chart and modified control chart are contrasted.
정영배(Young-Bae Chung),김연수(Yon-Soo Kim) 한국산업경영시스템학회 2011 한국산업경영시스템학회지 Vol.34 No.3
This parer proposes application of quality costing system in quality improvement area. Cost of quality in quality improvement area provides a valuable of both providing the need for improvement and giving a starting point for project. WQCMS(Web-based Q-Cost Management System) have ability to collect and analyze quality data generated from various different departments in the inside or outside of the enterprise without any limitations, if end-users are able to access wide area network. It provides the capability to integrate quality information from database and to generate various easy analysis reports to management’s needs using built-in analysis tool modules with real-time. Web-based quality cost management system to measure the performance of quality improvement activities in the business firms. This paper proposes standard model for quality cost process in quality improvement area.
정영배(Young-Bae Chung),김연수(Yon-Soo Kim) 한국산업경영시스템학회 2013 한국산업경영시스템학회지 Vol.36 No.2
This paper analyzed the management quality activities and performance based on industrial types. We divided the business into four industrial types, manufacturing industry, service industry, medical institution and public enterprise. We analyzed the differences of the elements of management quality in industrial types. The results show that leadership, measurement, analysis and knowledge management and workforce focus categories are not significant and strategic planning, customer and market focus, process management and performance categories are significant. This paper proposes the directions of management quality activities and performance according to industrial types based on these results.
정영배 ( Young Bae Chung ),김연수 ( Yon Soo Kim ) 대한설비관리학회 2011 대한설비관리학회지 Vol.16 No.3
Process capability indices have been widely used in manufacturing industries to provide a quantitative measure of process performance. The traditional process capability indices Cp, Cpk, Cpm, Cpm+ have been used to characterize process performance on the basis of quality characteristics. Cp, Cpk consider the process va- riation, Cpm considers both the process variation and the process deviation from target and Cpm+ considers economic loss for the process deviation from target. Taguch`s traditional quadratic loss function is inadequate for assessing quality and quality improvement because of different process and different sets of economic consequences in manufacturing. A flexible approach to developing loss function is desirable. The multivariate process capability index incorporates both the process variation and the process deviation from target or considers expected loss caused by the process deviation from target. This paper proposes a new capability index CpI using inverted normal loss function instead of the process variation that can be used to accurately reflect the losses associated with the process, and a new multivariate capability index MCpm+ using quality loss function instead of the process variation
정영배(Young-Bae Chung),김연수(Yon-Soo Kim) 한국산업경영시스템학회 2009 한국산업경영시스템학회지 Vol.32 No.4
This study examines the competitive strategy of service quality in financial industry Service quality has been suggested as the approach for service organizations to be service and customer oriented Recently, the issue of internal service quality has been one of topics widely discussed in financial industry The purpose of the current study is to examine the internal service quality which is believed to increase such organizational performances as customer satisfaction, retention and revenue Internal service quality index is used to measure service quality in service industry In this paper, the methodology for measuring the degree of service quality which has been adopted in service quality research area was used This paper proposes internal service quality index in financial industry In this paper, we show the application method of internal service quality index
정영배(Young-Bae Chung),김연수(Yon-Soo Kim) 한국산업경영시스템학회 2011 한국산업경영시스템학회지 Vol.34 No.4
This paper proposes performance measurement method of quality small-group activity in business. This paper collects and analyzes quality circle activities data respect to tangible and intangible effect in national quality circles competitions festival. This paper proposes QPI (quality-circle performance index) based on Balanced Scorecard for quality small-group activity in quality improvement area. QPI is to measure the performance of quality improvement activities in the business firms. QPI is able to use widely in industries to provide a performance measure of quality small-group activity. In this paper, we propose the application method of QPI.
정영배(Young-Bae Chung),김연수(Yon-Soo Kim) 한국산업경영시스템학회 2014 한국산업경영시스템학회지 Vol.37 No.1
Control charts are generally used for process control, but the role of traditional control charts have been limited in case of a contaminated process. Traditional x control charts have not been activated well for such a problem because of trying to control processes as center line and control limits changed by the contaminated value. This paper is to propose robust x control charts which is considering a location parameter in order to respond to contaminated process. In this paper, we consider x a, that is trimmed rate; typically ten percent rate is used. By comparing with p, ARL value, the responding results are decided. The comparison resultant results of proposed two control charts are shown and are well contrasted.
웹 기반의 품질코스트 관리시스템 구축 : 제1부 ; 시스템 설계
정영배(Young-Bae Chung),김연수(Yon-Soo Kim),김준홍(Jun-Hong Kim) 한국산업경영시스템학회 2004 한국산업경영시스템학회지 Vol.27 No.3
The purpose of this study is to design and implement web-based quality cost management system to measure the performance of quality improvement activities in the business firms. The designed web-based quality cost management system which is also known as WQCMS (Web-based Q-Cost Management System) utilized newly classified objective performance indicator items to measure quality related activities. Well-classified performance measurement indicator item lists which are played key role in the system was researched and standardized according to size and business categories of enterprise. Its code standards are based from fundamental P AF Model. Developed WQCMS have ability to collect and analyze quality data generated from various different departments in the inside or outside of the enterprise without any limitations, if end-users are able to access wide area network. It provides the capability to integrate quality information from database and to generate various easy analysis reports to management's needs using built-in analysis tool modules with real-time. The proposed system was developed using Microsoft's .Net technology. ASP.NET and MS-SQL Server 2000. By web-enabling Q-cost management system, the effectiveness of the system management and utilization was realized by easiness of information integration and economical efficiency.
정영배(Young Bae Chung),김연수(Yon Soo Kim) 한국산업경영시스템학회 2015 한국산업경영시스템학회지 Vol.38 No.1
Control charts are generally used for process control, but the role of traditional control charts have been limited in case of a non-contaminated process. Traditional x-s control chart has not been activated well for such a problem because of trying to control processes as center line and control limits changed by the contaminated value. This paper suggests modified x-s control chart based on robust estimation. In this paper, we consider the trimmed mean of the sample means and the trimmed mean of the sample standard deviations. By comparing with ARL value, the responding results are decided. The comparison resultant results of traditional control chart and modified control chart are contrasted.