연구논문 : 계수규준샘플링검사의 적용연구

신용백 한국품질경영학회 1977 품질경영학회지 Vol.5 No.1

중소기업공장의 관리능력개발을 위한 효과적인 산업교육 훈련의 실시방안

신용백 한국기술사회 1980 技術士 Vol.13 No.3

Top manager and factory manager in the small-medium industrial factory in Korea was conscious of industrial education training requirement more than past, it began the Saemaul movement in factory from 1974, and the 1st nation wide meeting of industrial Standardization & Quality control Movement from 1975, etc. It is that industrial education training through the influence of pan-industrial nation with program. Because it is non-system and unplanned that are a short period introduction of industrial education training operation. Now then they are received better apprecation through the information of the program ecommendation and consultancy of industrial education training from coordination with related professional agencies and goverment agency for small-medium industry promotion.

국내 제조 광공업의 품질관리개황과 효과적인 TQC 추진방안

신용백 한국기술사회 1986 技術士 Vol.19 No.2

국내 광공업개황과 공업기술수준 및 발전방향

신용백 한국기술사회 1984 技術士 Vol.17 No.2

소집단분임조활동의 활성화방안에 관한 소고 -공장 새마을운동, TQC활동 및 물자절약과 에너지 절감을 중심으로-

신용백 한국기술사회 1984 技術士 Vol.17 No.4

The first national QC Circle Convention sponsored by Industry Advancement Administration in 1975 was the beginning of employees group activity from a national point of view. Subsequently some events such as the firs Nationwide Factory Seamaul activity small Group Convention, which was supervised by the ministry of Trading and Industry and Factory Seamaulundong promotion Center, paved the way for proliferation of the group activity through all kinds of manufacturing. Although since November 1982 these two conventions has been united, many problems have been disclosed that are against the basic principles more or less. Worker's group activity is, essentially, a trouble shooting oriented voluntary small group within their working place to improve the surroundings creatively. In practice, however, many groups are so typical and so impetuous of the material effect that it is worried to be inclined to outform rather than contents. To prevent this point it is recommended that worker's group activity be promoted continuously and on the basis of the original principle of small group activity to obtain practical and rich results, and systematically to be more effective and active considering the managerial environment and the intellectual level of the consisting members.

전사적 품질관리의 효과적 운영추진에 대한 소고

신용백 한국기술사회 1989 技術士 Vol.22 No.2

Although since 1963 QC activity for Korean industrial standard registered mark, many problems have been disclosed that the basic Quality Control principles. In practice, many manufacturing Companies are so typical and so impetuous of the tangible effect that it is worried to be inclined to out form rather than contents and quality. To prevent this point it is recommended Company Wide Quality Control activity be promoted contineously and on the basis of the original principle of C.W.Q.C. activity and small group activity of QC and Factory Seamaul Undong in Korea to obtain practical and real results. So the effective approach model is designed for Company wide Quality Control activity in Korea industry.

비정규분포공정에서 계량치관리를 위한 메디안 특수 관리도의 모형설계와 그 적용에 관한 실용에 연구

신용백 한국기술사회 1988 技術士 Vol.21 No.4

Whereas is non-symmetrical distribution manufacturing process the traditional X-chart by Shewhart is not plotted relatively on the central line but plotted on the skew of upper-hand side or lower-hand side. That is to say, for the purpose of producing either upper-specification-oriented items or lower-specification-oriented items, and when we carry out tighter control so as to have them pass only its specifications, the distribution shape naturally has a non-normal distribution. In the Shewhart X-chart, which is the most widely used one in Korea, such skewed distributions make tile plots to be inclined below or above the central line or outside the control limits although no assignable causes can be found. To overcome such short comings is non-normally distributed processes, a distribution-free type of confidence interval can be used, which should be haled on order statistics. This thesis is concerned with the design of control chart based on a sample median which is easy to use in practical situation and therefore properties for non-normal distributions, such as Gamma, Beta, Lognormal, Weibull, Pareto, and Truncated-normal distributions, may be easily analyzed. To enhance this improvement, I proved the property of practical applications of control chart method by comparing and analyzing the case studies of practical application of special purpose control chart method, and also by introducing the new designed median control chart.

계수규준(計數規準)샘플링검사(檢査)의 적용연구(適用硏究)

신용백,Sin, Yong-Baek 한국품질경영학회 1977 품질경영학회지 Vol.5 No.1

비정규분포공정에서 메디안특수관리도 통용모형설정에 관한 실증적 연구(요약)

신용백 한국산업경영시스템학회 1987 한국산업경영시스템학회지 Vol.10 No.16

Statistical control charts are useful tools to monitor and control the manufacturing processes and are widely used in most Korean industries. Many Korean companies, however, do not always obtain desired results from the traditional control charts by Shewhart such as the $\bar{X}$-chart, $\bar{X}$-chart, $\bar{X}$-chart, etc. This is partly because the quality charterstics of the process are not distributed normally but are skewed due to the intermittent production, small lot size, etc. In Shewhart $\bar{X}$-chart. which is the most widely used one in Kora, such skewed distributions make the plots to be inclined below or above the central line or outside the control limits although no assignable causes can be found. To overcome such shortcomings in nonnormally distributed processes, a distribution-free type of confidence interval can be used, which should be based on order statistics. This thesis is concerned with the design of control chart based on a sample median which is easy to use in practical situation and therefore properties for nonnormal distributions may be easily analyzed. Control limits and central lines are given for the more famous nonnormal distributions, such as Gamma, Beta, Lognormal, Weibull, Pareto, Truncated-normal distributions. Robustness of the proposed median control chart is compared with that of the $\bar{X}$-chart; the former tends to be superior to the latter as the probability distribution of the process becomes more skewed. The average run length to detect the assignable cause is also compared when the process has a Normal or a Gamma distribution for which the properties of X are easy to verify, the proposed chart is slightly worse than the $\bar{X}$-chart for the normally distributed product but much better for Gamma-distributed products. Average Run Lengths of the other distributions are also computed. To use the proposed control chart, the probability distribution of the process should be known or estimated. If it is not possible, the results of comparison of the robustness force us to use the proposed median control chart based oh a normal distribution. To estimate the distribution of the process, Sturge's formula is used to graph the histogram and the method of probability plotting, $\chi$$^2$-goodness of fit test and Kolmogorov-Smirnov test, are discussed with real case examples. A comparison of the proposed median chart and the $\bar{X}$ chart was also performed with these examples and the median chart turned out to be superior to the $\bar{X}$-chart.

국내QC및 TQC활동의 반성과 새로운 품질경영(QM)

신용백,Sin, Yong-Baek 한국제품안전협회 2007 제품안전 Vol.8 No.-