• Title, Summary, Keyword: 식스시그마

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Improvement of Hospital Sickroom Thermal Environment through Reestablishment of Fiducial Temperature (종합병원 온도기준 재정립을 통한 병실 열환경 개선에 관한 연구)

  • Lee, Kang-Bok;Kim, Young-Il;Chung, Kwang-Seop
    • Proceedings of the SAREK Conference
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    • pp.573-578
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    • 2009
  • Survey shows that temperature accounts for 90.6% of dissatisfaction in general hospital environment. In order to improve this situation, operation and thermal data of S hospital collected in 2006 are analyzed. The objective of this study is to find optimum fiducial temperature that minimizes occupants' complaints using 6 sigma method.

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A Study on the Establishment of Reliability Certification System based on IEC 60300 (IEC 60300을 활용한 신뢰성경영시스템 인증제도 수립에 관한 연구)

  • Kim, Jong-Geol;Gwon, Byeong-Mu;Park, Ji-Seong
    • Proceedings of the Safety Management and Science Conference
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    • pp.535-545
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    • 2012
  • 국내의 많은 기업들은 품질경영시스템인 ISO 9000 시리즈와 식스시그마 등 기업의 품질 및 제품에 대한 품질을 높이기 위해 품질관리, 품질경영에 많은 시간과 비용을 들여왔다. 하지만 품질인증제도와는 달리 제품의 신뢰성에 관한 경영시스템인증을 받으려고 하는 기업은 거의 없는 실정이다. 부품 소재나 제품의 신뢰성을 확보하기 위한 방안으로써 신뢰성경영시스템에 대한 인증은 필수적이라 할 수 있다. 신뢰성 관련 기법들을 표준화하고, 효율적인 경영시스템을 도입하여 운영하고, 여기에 세계적으로 통용되는 기술체계를 도입하여 기업의 신뢰성경영시스템을 발전시킨다면 우리산업이 당면한 수출 경쟁력 확보 등의 현안문제 해결에도 도움이 될 수 있다. 본 연구에서는 신뢰성 경영시스템 인증제도 수립에 있어 국제 표준인 신뢰성경영시스템 IEC 60300에 대해 소개하고, 신뢰성 경영시스템 평가방법을 활용한 MIR기법과 AHP기법을 분석 비교하고, 개선방향을 제시하고자 한다.

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Design of Zp-s Control Chart for Monitoring Small Shift of Process Variance (미세 공정산포 관리를 위한 Zp-s관리도 설계)

  • Kim, Jong-Geol;Kim, Chang-Su;Eom, Sang-Jun;Yun, Hye-Seon
    • Proceedings of the Safety Management and Science Conference
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    • pp.199-207
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    • 2013
  • 산업의 빠른 발전 속도에 따라 연구 개발도 함께 발전해야 한다. 따라서 현재 제조공정에 대한 품질 특성치의 분석방법으로 공정 모수의 작은 변화도 쉽게 탐지를 할 수 있는 EWMA 관리도와 Shewhart 관리도보다 공정 변화에 민감하게 탐지 가능한 CUSUM 관리도에 관한 연구가 많이 이루어지고 있다. 하지만 식스시그마 공정관리에 맞춘 평균, 불량률, 미세 분산을 동시에 감지할 수 있는 동시 관리 체계 연구는 많이 미흡하다. 본 연구에서는 기존의 CUSUM, EWMA 관리도 기법보다 빠른 이상 감지를 위해서 평균, 불량률, 분산 3가지가 동시에 관리되어질 수 있도록 Zp-s 관리도를 소개한다. Zp-s 관리도는 ARL을 통해 기존 관리도보다 민감함을 확인할 수 있다.

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Research Results and Trends Analysis for Monitoring Small Shift of Process Variance (미세 공정산포 관리를 위한 기술체계 연구동향 분석)

  • Kim, Jong-Gurl;Kim, Chang-Soo;Um, Sang-Joon;Yun, Hye-Seon
    • Proceedings of the Safety Management and Science Conference
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    • pp.593-607
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    • 2013
  • 관리도를 사용하여 공정평균, 공정산포 등 여러 가지 공정모수를 관리할 수 있다. 그러나 공정모수의 미세 변동을 효과적으로 관리할 수 있는 기법체계는 아직 미완이다. 식스시그마 공정관리 등 정밀공정관리를 위해서는 미세 공정평균과 공정산포관리가 전제되어야한다. 특히 높은 수준의 공정능력을 유지하기위해서는 공정산포관리가 선결과제이다. 본 본문에서는 공정평균과 공정불량률, 공정산포의 미세변동을 효과적으로 관리할 수 있는 기술체계의 연구동향을 분석하고 미세공정산포관리를 위한 대안을 제시하고자 한다.

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Effects of Characteristics of Individual Cognitive Structure on the Acceptance of Six Sigma (개인의 인지구조 특성이 식스시그마 수용에 미치는 영향에 관한 연구)

  • Kim, Min-Sun;Kym, Hyo-Gun
    • Asia pacific journal of information systems
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    • v.16 no.3
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    • pp.117-142
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    • 2006
  • The purposes of this paper are to find out the characteristics of organizational members' cognitive structure for the effective acceptance of a six sigma innovative method in the organization. The author hypothesized the characteristics of individual cognitive structure is one of the most important factors on the acceptance of a six sigma method in the organizations for verifying through literature reviews, in-depth interviews and an analysis of questionnaire. This study is the first trial to corroborate the influence of characteristics of individual cognitive structure on the acceptance of a six sigma method. This can be utilized as an integrated appraisal model for the evaluation of acceptance of a six sigma method. The result not only helps the organizations that a six sigma method was recently introduced, to decrease the trial-and-errors experienced by the preceding groups, but can be used as fundamental data to establish an concrete strategy of a six sigma acceptance.

The Effects of Correct Implementation of Six Sigma Practices on Customer Focus Performance, Quality Performance and Business Performance (식스시그마의 올바른 실행이 고객관점 성과, 품질성과 및 사업성과에 미치는 영향)

  • Yoon, Jae-Hong
    • Korean Management Science Review
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    • v.30 no.1
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    • pp.59-72
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    • 2013
  • This research has seven factors such as top management leadership, belt system operation, implementation of systematic methods, adequate project performance measurement, customer focus performance, quality performance and business performance. Those are critical to correct implementation of Six Sigma. I set seven hypotheses which represented the relationships among the seven factors, gathered questionnaires and analyzed the data. Top management leadership affected positively the adequate project performance measurement and the belt system operation, The belt system operation affected the implementation of systematic methods positively and it also affected the adequate project performance measurement. It affected positively the customer focus performance, the quality performance and the business performance, respectively.

Cultivating the Strategic CoP for Implementing Six Sigma (식스시그마 실행을 위한 전략적 실행공동체의 활성화)

  • Kim, Sung-Jin;Hong, Jong-Yi;Suh, Eui-Ho
    • Korean Management Science Review
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    • v.28 no.1
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    • pp.129-140
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    • 2011
  • There is no doubt Six Sigma is an excellent concept to improve quality of product or service. However, limitations to Six Sigma's implementation process have been discovered that are related to Six Sigma's foundation in statistical methods. The limitations of Six Sigma are overcome by the advantages of a strategic CoP (Community of Practice). Therefore, this research tries to build a strategic CoP for implementing Six Sigma. The method for building a strategic CoP is suggested, and then a case study of a real company is presented.

Optimization of Cathode Flow Field Design for a PEMFC with Six Sigma Technique (Six sigma 기법을 이용한 PEMFC Cathode 유로설계 최적화)

  • Kim, Sun-Hoe
    • Transactions of the Korean hydrogen and new energy society
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    • v.20 no.6
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    • pp.492-498
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    • 2009
  • Six sigma methode was applied for optimization of flow field design of a proton exchange membrane fuel cell (PEMFC). The optimization between number of channel and channel/rib width was suggested in this paper with six sigma method. With the help of six sigma design of experiment (DOE) the number of experiments may be reduced dramatically. The fuel cell channel design optimization with results of these experiments with a 100 $cm^2$ serpentine flow field indicates a optimization data for a given constant operating conditions.

Six Sigma Implementation Methods for a Telecommunication Service Industry: A Case Study of KT (통신서비스산업에서의 식스시그마 추진 전략 : KT의 사례를 중심으로)

  • Bae, Shin-Gyu;Hwang, Gee-Hyun;Byun, Jai-Hyun
    • Journal of Korean Institute of Industrial Engineers
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    • v.32 no.4
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    • pp.347-357
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    • 2006
  • Six sigma activities in an information and communication technology company in Korea are introduced. Korea Telecom(KT) was a public company for a long time and became a private enterprise not long ago. Although this company adopted many innovation programs, they were not effective because of the company's characteristics : long-time government-owned and information service industry. This paper describes the reason why KT introduced six sigma, some implementation strategy, and key factors to successfully deploy it. This paper is expected to be helpful to public or service industry in which it is very difficult to implement innovation activities.

A Case Study of Six Sigma Application on Market Analysis (식스시그마를 응용한 시장분석 사례 연구)

  • Choi, Gyoung-Seok;Yun, Won-Young
    • IE interfaces
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    • v.15 no.4
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    • pp.409-425
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    • 2002
  • This case study provides a market analysis methodology for overseas markets by applying statistical tools and the Six Sigma approach. The study suggests a procedure with seven steps to improve brands position in the market. These steps consist of interviewing consumers and floor salesmen of stores, surveying, analysis of correlation between brand position and customers satisfaction, analysis of relationship with companies and customer satisfaction factors, analysis of the customer satisfaction gap between companies, evaluating the importance of customer satisfaction factors, and suggestion for enhancement of brand position. The Six Sigma approach such as "Define", "Measure" and "Analyze" is used in this procedure, which is part of Six Sigma procedure, D-M-A-I-C (Define, Measure, Analyze, Improve, Control). Minitab and SAS are used for the statistical analysis.