• Korean Journal of Construction Engineering and Management
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• v.14 no.3
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• pp.146-156
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• 2013

Recently, to reflect the various needs of customers in the apartment field, the customized apartment has emerged. From the point of the customer, customized apartments have the definite advantage of being able to guarantee more customer options. On the other hand, from the point of the project manager, there are significant risk factors, with increase of management factors, construction delays, etc. The reasons for this are, to date, the insufficient systematic analysis of the project, and the lack of experience of similar projects. This study provides the waste factors of each phase in a customized apartment project. A survey and interview are conducted to achieve the waste factors using MUDA methodology; a process of the project was analyzed; and a factor of each process was identified. Also, AHP(Analytic Hierarchy Process) are used, to evaluate the waste factors in project stages. The AHP results show that "Design change" and "Inappropriate intervention in construction process" ranked highly in the waste factors. The results of our research will provide a countermeasure that addresses waste factors in similar projects, and contributes to reducing the extra cost and time in new projects.

• 월간낙농육우
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• v.30 no.9
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• pp.110-114
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• 2010

• KOREAN POULTRY JOURNAL
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• v.37 no.3 s.425
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• pp.81-83
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• 2005

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.29 no.2
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• pp.46-54
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• 2000

공조 설비의 자동화된 고장 진단 시스템은 에너지 낭비요인을 미연에 방지할 수 있으며, 운전 보수비의 절감과 설비의 휴지 시간을 단축시킬 수 있다.

• Journal of the Korea Institute of Military Science and Technology
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• v.21 no.4
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• pp.541-550
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• 2018

The works of preparing for missile flight test are becoming more complicated. To reduce the amount of waste time along with the complexity of the task, systematic analysis of waste factors should be performed before performing process improvement. The waste factors for missile flight test are first defined using lean-based waste factors. The improvement priorities for the defined waste factors are surveyed. For reliable analysis, AHP is used in questionnaire analysis instead of the existing method with large error. Then weighting and priority for waste factors for level 1 and Level 2 are suggested. Through AHP, we could derive reliable improvement priorities for waste factors. It is analyzed that the biggest cause of waste factors is waiting time and identified as the first item to be considered when establishing improvement plan. In addition, suggestions for improvement measures of waste factors are presented through brainstorming method. Reliable results will be an important factor in process redesign for missile flight test works.

• Proceedings of the KSR Conference
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• 2003.05a
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• pp.656-662
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• 2003

The rolling-stocks used in conventional line have suffered wheel problems due to lack of adaptability with track. These brought out severe wheel wear and inefficiency of wheel maintenance. Especially, tight wheel maintenance criteria have caused waste factors of wheel machining, these increases rolling-stock maintenance costs. Thus, this study was started to Propose the wheel maintenance plans to improve maintenance efficiency in respect to wheel maintenance process in rolling-stock workshop. Here, we describe some results

• Korean Journal of Construction Engineering and Management
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• v.11 no.1
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• pp.88-100
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• 2010

As the competition between companies are deepened, the number of companies adopting six sigma principles, which is one of the innovative management strategies, are increasing. According to this trend, the changes in both strategies and methodologies of six sigma are continuous. However, the evaluations and the management principles included in the process after the six sigma applications are insufficient, and the cooperation between the parties in the company is also not enough because the application process of six sigma is too complex and not efficient. In order to solve this problem, a research for developing the methodology which can learn about and do six sigma applications is so necessary, specifically for expanding the six sigma applications and introducing the participation of all company members. The purpose of this study, therefore, was to develop and present more efficient Six Sigma applied process by reducing the existing unnecessary steps in improvement one, by applying the examination method of wasteful elements on the potential factors, through analyzing the Six Sigma DMAIC applied case in the construction industry. The result of those application showed that the detection of potential factors using wasting elements was possible in measurement step and that it was possible for the improved process with reduced steps compared to existing process while to remain the outcomes. It is considered that the performance rate of Six Sigma project will be improved significantly because the reduction in the improvement step does not affect the improvement effect within the whole Six Sigma project.

• The Magazine for Energy Service Companies
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• s.57
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• pp.52-55
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• 2009

서울시에서 추진하고 있는 건물에너지합리화사업(BRP, Building Retrofit Project)은 건물 소유자 또는 에너지 사용자가 주체가 되어 에너지 사용실태와 낭비요인을 파악하기 위해 에너지 진단을 실시하고 그 결과를 참고하여 건물에서의 에너지 절감 및 이용효율을 향상시키는 시설개선사업이다. 이를 통해 2013년 도쿄의정서를 대비하고 앞으로 서울을 친환경적 세계도시로 조성해 나가기 위해 앞장서고 있는 서울시의 맑은환경본부 에너지정책담당관 이창학 과장을 만났다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2011.04a
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• pp.95-98
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• 2011

건설공사 프로젝트는 사전 기획 단계, 설계, 계약, 시공, 운영 및 유지관리 등 각 단계의 다양한 참여 주체에 의해 프로젝트가 진행되고 각 분야 간의 원활한 의사소통을 통한 협력 작업으로 일을 진행한다. 그러나 각 단계별 참여주체간의 협업이 어렵고 정보교류가 원활하지 못한 문제점들이 있다. 또한 건설공정은 현장여건의 변화와 불확실성으로 인해 예측이 어렵고, 보다 신뢰성이 있는 계획의 부재로 인하여 각종 세부 공정들 간의 간섭을 유발하고 계획된 일정을 준수하기 어려워 불필요한 비용의 낭비와 공사기간의 증가를 야기한다. 이러한 낭비요인을 최소화하고 건축 프로젝트를 진행하는데 있어서 효율성을 높이기 위해서는 시공계획 단계의 신뢰성을 높여야 한다. 따라서 시공전의 계획 단계에서부터 4D 시뮬레이션을 통하여 이러한 문제점들을 파악하고 개선하는 것이 중요하다. 본 연구에서는 BIM기반의 시뮬레이션 프로그램의 기능분석을 통하여 효율적인 적용과 발전과정을 알아보고자 한다.

• JOURNAL OF ELECTRICAL WORLD
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• s.428
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• pp.24-31
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• 2012

55.9%, 우리나라의 최근 전력소비증가율(2002~2010년)이다. 경제협력기구(OECD) 평균인 9.1%의 5배에 해당하는 수치이다. 원가 이하인 현재의 전기요금체계와 이로 인해 사회에 만연된 전력과소비, 이에 더해 일부 지자체 및 환경단체 민원 등에 따른 발전공급력 건설 지연, 효율적 에너지 소비행태의 미 정착 등은 수년 간 전력수급에 밝혀진 적신호를 좀처럼 바꾸지 못하고 있다. 이에, 전기협회는 대국민 의식실태조사를 통해 최근의 전력수급상황을 바라보는 국민들의 인식과 정서를 파악하고, 국민들이 원하는 전력수급안정화 지표를 추출하여 정책 참고자료로 제공하는 한편, 낭비요인 없는 효율적인 전력소비의 확산 등 안정적인 전력수급정책에 기여하기 위해 대국민 여론조사(15개 광역시 20세 이상 성인남녀 1000명)를 시행했다.