• Proceedings of the Safety Management and Science Conference
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• 2009.04a
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• pp.365-370
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• 2009

The present study proposes the various hypothesis tests and interval estimations for homogeneous and heterogeneous populations in the continuous and discrete process. These results can be used to complement the QC story 15 steps for quality improvement circle and DMAIC processes for six sigma innovation.

• Journal of Chest Surgery
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• v.7 no.1
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• pp.101-108
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• 1974

Repair of incomplete endocardial cushion defect was accomplished in two cases in September 1973 in this department. In each case a low atrial septal defect and a cleft of mitral septal cusp were found. Interrupted suture repair on the cleft mitral cusp and closure of the atrial septal defect with dacron patch were done successfully. Rigg-Kyvsgaard bubble oxygynator and Sigma motor were utilized for extracorporeal circulation. Follow up study, six months after discharge, revealed satisfactory results.

• Proceedings of the Korean Society for Quality Management Conference
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• 2004.04a
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• pp.3-8
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• 2004

식스시그마의 성공을 위해서는 전략적으로 중요한 프로젝트를 선정하는 것이 매우 중요하다 본 연구에서는 AHP(analytic hierarchy process)를 이용하여 식스시그마 프로젝트를 선정하는 프로세스를 제안하고, 이 프로세스의 유효성 확인을 위해 사례분석을 실시하였다

• Proceedings of the Korean Society for Quality Management Conference
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• 2004.04a
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• pp.9-12
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• 2004

본 논문에서는 기존 프로젝트 선정에 이용되던 COPQ, VOC/VOB 방식대신 기업의 총생산성에 많은 기여를 하는 프로젝트를 도출, 선정할 수 있도록 하는 TP 전개(Deployment) 방식의 프로젝트 도출, 선정 방안을 제안하고자한다.

• Journal of the Korea Safety Management & Science
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• v.9 no.1
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• pp.119-131
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• 2007

Engineer and quality statistician use different terms and techniques but they have same meaning and concept. The terms accuracy and precision are frequently used by engineer and scientist in the department of R&D and production technology. This paper makes a contribution to the interpretation of statistical quality techniques by the use of accuracy and precision. Engineer and scientist who have six sigma black belt and statistical background can use efficiently and effectively accuracy and precision in a manner consistent with statistical usage according to this study.

• Proceedings of the Korean Society for Quality Management Conference
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• 2006.04a
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• pp.149-152
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• 2006

In this paper, We study several method of CTQ measurement for improvement of Quality. Measurement are cornerstone of basic improvement of Science and Technology and are considered continuous thesis. In this paper, we survey measure several variable for CTQ for Six sigma. We introduce Taguchi's SN ration Which is important example good measure for improve quality Improvement are succeed by good select measure variable which is called CTQ which should agree problem define and final goal.

• Proceedings of the KAIS Fall Conference
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• 2008.05a
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• pp.358-360
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• 2008

이 논문에서는 벨로우 스피닝 불량율 감소하기 위해 6 시그마 방법을 이용하여 전개하면서 Improve 단계에서 일반적으로 많이 사용하는 요인분석에 의한 배치방법을 대신 다꾸지 방법을 통한 실험계획법을 적용함으로 불량을 감소시키는 방법을 사용하였다.

• Proceedings of the KAIS Fall Conference
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• 2008.05a
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• pp.365-368
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• 2008

일반적으로 6 시그마 적용사례는 제조분야 중심으로 연구 발표되는 경우가 많고, 판매나 마케팅 분야의 적용사례는 찾기 힘들실정이다. 본 논문에서는 S전자의 전문상가에서 판매되는 노트북의 판매비중을 높이기 위해 6 시그마를 적용하여 노트북의 판매비중을 높이기 위해 프로젝트를 진행하였다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2002.11a
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• pp.316.1-316
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• 2002

The regression analysis in the six sigma process is used to reduce the vibration of a small universal motor, The vibration characteristics and contribution of each part to overall vibration of an electric grinder is investigated through various vibration measurements and frequency analysis for the assembled and disassembled one. (omitted)

• Korean Journal of Food Science and Technology
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• v.28 no.2
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• pp.279-284
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• 1996

To develop a selective medium for the isolation and the detection of leuconostocs from the various samples including fermented vegetables, ten strains of leuconostocs and seven strains of lactobacilli were tested for their sensitivity to various antibiotics. The basal-medium containing 5 ${\mu}g/ml$ of novobiocin inhibited the growth of lactobacilli completely, but not that of leuconostocs. On the basis of this result, a new selective medium was developed and to be named NLS medium. This medium contains 1% Tryptone (Difco), 0.1% Yeast Extract (Difco), 2% sucrose, 0.1% Beef Extract (BBL), 0.5% sodium acetate, 0.2% ammonium sulfate, 0.01% magnesium sulfate, 0.2% dipotassium phosphate, 0.05% sorbic acid, 75 ppm sodium azide (Sigma), 0.1% (vol/vol) Tween 80, 30 ${\mu}g/ml$ of Vancomycin (Sigma), 5${\mu}g/ml$ of Novobiocin (Sigma), 0.5${\mu}g/ml$ of cysteine HCI, and 1.5% Agar (Difco). All of the eighty six isolates obtained from some foodstuffs were identified as members of the genus Leuconostoc. Comparative counts with the MRS, PES, LUSM, and NLS medium indicated that the recovery percent was lower than other selective media. Therefore, this result suggested that NLS medium was suitable for the isolation of leuconostocs, but not for counting or enumerating.