• Proceedings of the Korean Statistical Society Conference
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• 2004.11a
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• pp.35-39
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• 2004

본 연구에서는 통계의 품질을 평가하기 위한 품질지수 문제를 다루었다. 최근 제조업 부분에서 널리 이용되고 있는 '6-시그마'기법의 적용 가능성을 살펴보았다. 그리고 1999년 네덜란드 통계청의 Booleman과 Brakel(1999)에 의해 제안된 방법을 소개하였고, 이 방법을 개선하기 위해 2차 손실함수에 의한 평가방법을 살펴보았다. 손실함수에 의한 품질평가는 품질이 목표치를 벗어날 때, 급격히 만족도(품질)가 떨어진다는 현실성을 제대로 반영하였고, 사용자가 차원에 따라 지수공식을 다르게 적용하지 않아도 되는 장점을 가지고 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.5
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• pp.1453-1459
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• 2008

Successful Six Sigma methodology involves continual success of projects, each incrementally moving the organization closer to its strategic goals of shareholder return and customer satisfaction. However, Six Sigma methodology has some disadvantages in long-term technical strategy parts, systematic technology management techniques and concrete idea creativity methodology. To complement these Six Sigma problems, Triz technique is considered. Triz focuses on solving such problems efficiently, effectively, and creatively. The purpose of this paper is to improve the temperature inspection method of a refrigerator through the DAGEV(Define-Analyze- Generate-Evaluate-Verify) cycle of Triz.

• Annual Conference of KIPS
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• 2005.11a
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• pp.255-258
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• 2005

비즈니스의 빠른 변화에 맞춰 적시에 비즈니스 모델을 지원할 수 있는 소프트웨어 프로세스 역량 확보가 IT 서비스 기업의 생존 전략으로 부상하고 있다. 급변하는 IT 시장에서 경쟁력을 확보하기 위해서는 개발 생산성 향상과 고객 요구품질 충족이 필수적이며, 이를 관리할 체계적 소프트웨어 프로세스가 조직 차원에서 운영되어야 한다. 이에 본 논문에서는 통계 기반의 프로세스 개선 모델인 6 시그마를 적용하여 3 단계의 정의 활동과 이를 지원하는 3 개의 6 시그마 툴로 구성된 정형적 소프트웨어 프로세스 정의 기법을 제시한다.

• 한국전기화학회:학술대회논문집
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• 2003.07a
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• pp.79-82
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• 2003

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.124-129
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• 2007

GUI는 매우 감성적인 분야로서 객관적인 평가 및 정량화가 어려웠다. 이러한 어려움으로 인해 GUI에 대한 성과 측정이 이루어지지 못함으로써 각 기업에서 GUI및 GUI 개발이 제대로 된 평가를 받지 못하는 상황이 많이 발생하였다. 본 사례에서는 상품과 서비스의 품질 관리를 위한 6시그마 의 통계적 기법을 GUI일관성 평가에 도입하여 GUI의 비일관적인 요소를 불량률로 산출함으로써 GUI의 수준을 측정하고 정량화하는 방안에 대해 모색해 보았다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.6
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• pp.1281-1285
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• 2013

In this paper, we propose a method to extract the area of appendix from ultrasonographic image via computational vision. A series of image processing techniques such as Ends-in search stretching for enhancing the brightness contrast, block binarization, grassfire algorithm for extracting lower part of fascia, and fuzzy sigma binarization method to finalize the appendix area are used to achieve our goal. The strength of this paper is using fuzzy sigma binarization instead of other binarization technique to handle the sensitivity of extracting the target area from regio hypogastrica. The experiment verifies the efficacy of the proposed method successfully.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.3
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• pp.673-681
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• 2007

The integration of Quality Circles and Six-Sigma has gained attentions for the attainment of enhanced customer satisfaction, costs reduction, and improved business performance. The purpose of this paper is to verify the benefit from the integration of Quality Circles and Six-Sigma by applying the integrated process for an alcohol manufacturing line. In the integrated process, we used the first three steps of Six-Sigma of Define, Measure, and Analyze(D-M-A) and then applied the concept of Quality Circle, which has good performance in the Improvement and Control(I-C) process. For the selection of the theme of quality circles, Analytic Hierarch Process(AHP) is used, and we also employed the experimental design, which is designed to find an optimal operating condition. Furthermore, the results of the economic analysis confirm that the integration process would be successful in reducing the incidence of defects and the quality cost.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.4D
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• pp.649-659
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• 2006

Recently there has been huge efforts to improve performance in construction process by applying emerging techniques such as the Lean principle and Just-in-time concept. However, little achievement as we expected has come out in reality due to the lack of strategy to set a definite goal of the execution and differences of personal viewpoints on construction productivity. Accordingly, it is the most important to promote the circumstances for the construction process improvement by quantifying the goals of respective unit activity groups. This research explores feasible solutions for the improvement of construction projects performance by combining the six-sigma principle for the generic administrative innovation based on the idea of construction process performance. For this purpose, mutual comparisons of various current approaches are performed in an attempt to establish the advantages in applying six-sigma idea and to provide its fundamental strategy. Furthermore, through a case study with the simulation of applying six-sigma to a unit activity group in construction process, this paper verifies that the overall performance improves as the degree of sigma level gets advanced.

• Journal of the Korea Institute of Building Construction
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• v.10 no.1
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• pp.91-99
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• 2010

The purpose of this study was to present the 6 sigma technique in construction projects, and to review the possibility of 6 sigma introduction. DMAIC (Design, Measure, Analyze, Improve, Control) methodology was used to increase the utilization of TIMS (Technology Information Management System). The results of this study were as follows. The introduction of the 6 sigma technique was very effective in the construction industry, but there were many difficulties in its application because of the characteristics of construction. As the 6 sigma technique emphasizes management based on data, it is essential to accumulate historical data and to achieve the standardization of the construction business process. Furthermore, it is necessary to apply 6 sigma for the competitiveness of the construction industry, and the development of suitable 6 sigma methodology for the construction industry is required.

• Proceedings of the Safety Management and Science Conference
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• 2005.11a
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• pp.162-170
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• 2005