• 인간식물환경학회지
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• 제23권3호
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• pp.347-362
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• 2020

Background and objective: It is difficult to conclusively determine the exact cause of tree defects since multiple causes are involved such as climate change, plantation, tree quality and planting time, construction, planting base, drainage, sunshine conditions, maintenance, and microclimate. The data related to landscaping construction defects are scattered or fragmented by companies and years, but not managed systematically by the defect information management system. Most of the earlier studies associated with tree defects in apartment complexes suggested defect rates after examining tree defects in the completed construction site and proposed fragmentary and subjective conclusions about the causes of defects observed in trees with high defect rates. It is proposed to continue to conduct studies on the establishment and analysis of systematic databases to identify the exact causes of tree defects and measures to improve, and the need to accumulate systematic data in the construction process where many defects arises. This study was conducted to reduce the defects of trees planted in apartment complexes. Methods: Main factors related to tree defects were subdivided based on the results of literature review and a defect investigation at the completion site, and tree history management items were selected and subdivided during the construction stage. Results: The criteria for the preparation of subdivided items were obtained, and the tree history management checklist was written for the site under actual construction and a systematic database was established. Items that are categorized based to the causes of defects include the location of nurseries, date, tree quality, site conditions, planting techniques, microclimates, and maintenance. Conclusion: This study suggested tree history management items based on the tree defects that can be identified at the construction stage and applied them to the selected study site, which differentiates this study from earlier studies. It will be necessary to conduct a comprehensive and objective time series analysis on tree defects that occur over time by continuously monitoring and collecting data after construction.

• 품질경영학회지
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• 제28권4호
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• pp.1-15
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• 2000

Nowadays, consumers' consciousness on me quality are very diversified and their pattern is changing from the price-priority to me quality-priority. So they prefer good-quality products without defects. Therefore quality is a core competence. To compete with me facts, it is very important to keep me the quality competence. To do so, one way is to introduce 100ppm quality innovation system. Many corporates introducing 100ppm improved defect rations(not only process defect ratios but also product defect ratios). In these respects, this study focuses on the comparison and measurement of performance by the analysis of quality system between 100ppm corporates and non-100ppm corporates. Second, this focuses on the finding out core competence reinforcement factors according to the introducing of 100ppm quality system to improve the performance. Third, this focuses on the persuading to introduce the 100ppm quality system to the non-100ppm corporates. Last, this focuses on the playing on the role of guidance to improve QM efficiency.

• 한국정보과학회논문지:소프트웨어및응용
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• 제33권7호
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• pp.605-614
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• 2006

성공적인 소프트웨어 개발은 QCD에 의해 결정되며, 그 중 Quality는 Cost와 Delivery를 결정하는 핵심요소이기도 하다. 그리고 소프트웨어의 규모와 복잡도가 증가함에 따라 quality의 조기 확보의 중요성이 점차 커지고 있다. 이러한 관점에서 개발 후 결함을 찾아내고 수정하는 것보다 결함예방을 위해 더 많은 노력을 기울여야 할 것이다. 결함 예방을 위해서는 peer review, testing과 같은 결함 식별활동과 함께 기존에 발생된 defect 에 대한 분석을 통해 발생 가능한 결함의 주업을 차단하는 활동이 필요하며, 이를 위해 기존의 품질 데이타의 조직화 및 활용이 필요하다. 소프트웨어의 품질 예방을 위한 방법으로 system safety 확보를 위해 사용되고 있는 FMEA를 활용할 수 있다. SW-FMEA(Software Fault Mode Effect Analysis)는 예측을 통해 결함을 예방하는 방법으로, 기존에는 요구사항 분석 및 설계 시 많이 활용되어 왔다 이러한 SW-FMEA는 개발 활동을 통해 측정되는 정보를 활용하여, 분석, 설계, 나아가 peer review나 testing 둥 개발 및 관리 활동에 적용하여 결함예방 (defect prevention) 의 수단으로 활용 할 수 있다. 본 논문에서는 기존에 시스템 분석, 설계에 focusing된 SW-FMEA를 변형하여 product 결합뿐 아니라, 개발과정 중 발생할 수 있는 fault를 줄일 수 있는 결함 예방 model을 제안한다.

• 산업경영시스템학회지
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• 제44권4호
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• pp.128-135
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• 2021

WDM(Wavelength Division Multiplexing) is called a wavelength division multiplexing optical transmission method and is a next-generation optical transmission technology. Case company F has recently developed and sold PLC(Planar Lightwave Circuit), a key element necessary for WDM system production. Although Chinese processing companies are being used as a global outsourcing strategy to increase price competitiveness by lowering manufacturing unit prices, the average defect rate of products manufactured by Chinese processing companies is more than 50%, causing many problems. However, Chinese processing companies are trying to avoid responsibility, saying that the cause of the defect is the defective PLC Wafer provided by Company F. Therefore, in this study, the responsibility of the PLC defect is clearly identified through estimating the defect rate of PLC using the sampling inspection method, and the improvement plan for each cause of the PLC defect for PLC yeild improvement is proposed. The result of this research will greatly contribute to eliminating the controversy over providing the cause of defects between global outsourcing companies and the head office. In addition, it is expected to form a partnership with Company F and a Chinese processing company, which will serve as a cornerstone for successful global outsourcing. In the future, it is necessary to increase the reliability of the PLC yield calculation by extracting more precisely the number of defects.

• 대한안전경영과학회지
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• 제18권1호
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• pp.111-118
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• 2016

KC Mark is one of the country's integrated legal force to the minimum mandatory certification mark system for safety. That is absolutely needed for manufacturing and sales of goods in Korea. This thesis intended to see what is prevalent for both imports and domestic products for illegal and defect and rebuild the ecosystem as soon as possible for the healthy development through public awareness. In this theses point out the seriousness of the problem based on the various kinds of press releases, data of KCA(Korea Consumer Agency), MOTIE(Ministry of Trade, Industry and Energy) and KCA(Korea Customs Service) to the problem of certification system of KC mark and propose a solution to that issue. This study is considered to make befit the nation's place in the world and sustainable development is possible about the system of certification KC. This study expect more research on this issue in order to make enhance the confidence of KC mark.

• 한국콘텐츠학회논문지
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• 제15권3호
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• pp.101-113
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• 2015

본 연구의 목적은 국내 내수면 안전관리 실태를 살펴보고 그 문제점을 진단하여 내수면에서의 인명사고를 예방하고 인명피해를 최소화하기 위한 방안을 마련하기 위한 것이다. 현재 내수면 안전관리의 문제점은 크게 4가지 측면으로 분석된다. 첫째, 내수면 안전관리를 총괄하는 법령 부재와 같은 "법률적 측면", 둘째, 내수면 안전사고 예방을 위한 교육프로그램 부재와 수난구조 전문가 부족과 같은 "학습적 측면", 셋째, 수난사고 신고체계 분산과 사고대응에 있어서의 민관 파트너십의 부족과 같은 "협력적 측면", 넷째, 내수면 수난사고에 대한 현장대응 능력 및 전문성 부족과 안전관리체계의 분산 중첩에 따른 "현장대응성 측면"이다. 이러한 문제점의 개선을 위해 경기도 및 강원도 수상레저 종사자 및 이용자에 대한 설문과 그 분석을 토대로 개선방안을 모색하였다. "법률적 측면"에서는 '내수면 수상안전관리에 관한 특별법(가칭)'제정, "학습적 측면"에서는 내수면 안전교육 프로그램 개발과 수난사고 전문가 양성, "협력적 측면"에서는 내수면 안전사고 통합 상황관리 운영시스템 마련과 안전네트워크 활성화 및 민관 파트너십 재정립, "현장대응성 측면"에서는 현장대응 능력과 전문성 확보 및 소방중심의 내수면 안전관리 통합 등을 제시하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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• pp.278-279
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• 2017

Result from Amendment of Apartment Houses Decree Customer Service, Recently, the starting point of Defects Liability changed "Criteria of Completion date" to "Delivery date to Divided property". Through the Law amended, There are some inconsistency between "Claim for repairing defects" and "Period of security deposit for repairing defects claim". If someone bought a house after Completion date, Purchasing period of "Claim to security deposit for repairing defects" lapsed without renewal. This research is to identify problems and solutions for improving the system.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2003년도 종합학술대회 논문집
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• pp.72-77
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• 2003

시설물의 손상현황을 파악하기 위한 현장점검업무는 의사결정과 유지보수공사를 위한 원천 정보를 생성하는 과정으로서 시설물 유지관리 Life Cycle에서 매우 중요한 부분을 차지하고 있다. 하지만, 수작업 및 중복입력 둥의 과다한 업무와 손상상태의 결정, 점검이력의 활용미비, 유지관리업무의 전문성 부족 등으로 효율성과 신뢰성을 갖춘 점검업무가 수행되지 못하고 있는 실정이다. 본 연구에서는 국도 상의 주요구조물인 교량, 터널, 지하차도 등을 대상으로 과다한 현장점검업무를 효율적으로 처리하고 점검결과에 신뢰성을 제공할 수 있는 현장점검시스템을 개발하였다. 현장점검업무의 분석과정에서 나타나는 문제점들을 파악하여 개선방안을 기능설계에서 반영하여 시스템화하였다. 본 시스템은 국도유지건설사무소에서 활용할 애정이며, 손상상태의 추적, 보수 물량 산출 등 유지관리 업무의 효율적인 관리가 가능해질 것으로 기대된다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2022년도 가을 학술논문 발표대회
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• pp.223-224
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• 2022

The occurrence of defect, one of the major risk elements, gives rise to construction delays and additional costs. Although construction companies generally prefer to use a method of identifying and classifying the causes of defects, a system for predicting the rise of defects becomes important matter to reduce this harmful issue. However, the currently used methods are kinds of reactive systems that are focused on the defects which occurred already, and there are few studies on the occurrence of defects with prediction systems. This paper is about preliminary study on the development of judgemental algorithm that informs us whether additional works related to defect issue are needed or not. Among machine learning techniques, deep neural network was utilized as prediction model which is a major component of algorithm. It is the most suitable model to be applied to the algorithm when there are 8 hidden layers and the average number of nodes in each hidden layer is 70. Ultimately, the algorithm can identify and defects that may arise in later and contribute to minimize defect frequency.

• 산업경영시스템학회지
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• 제44권2호
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• pp.102-114
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• 2021

NDF (No Defect Found) is a phenomenon in which defects have been found in the manufacturing, operation and use of a product or facility, but phenomenon of defects is not reproduced in the subsequent investigation system or the cause of the defects cannot be identified. Recently, with the development of the fourth industrial revolution, convergence of hardware and software technologies in various fields is spreading to products such as aircraft, home appliances, and mobile devices, and the number of parts is increasing due to functional convergence. The application of such convergence technologies and the increase in the number of parts are major factors that lead to an increase in NDF phenomena. NDF phenomena have a significant negative impact on cost, reliability, and reliability for both manufacturers, service providers and operators. On the other hand, due to the nature of NDF phenomena such as difficult and intermittent cause identification and ambiguity in judgment, it is common to underestimate the cost of NDF or fail to take appropriate countermeasures in corporate management. Therefore, in this paper, we propose a methodology for estimating NDF costs by the PAF model which is a quality cost analysis model and ABC (Activity Based Costing) technique. The methodology of this study suggests a detailed procedure and the concept to accurately estimate the NDF costs, using ABC analysis, accounting system information, and IT system data. In addition case studies have validated the methodology. We think this could be a valid methodology to refer to when estimating the cost of other parts. And, it is meaningful to provide important judgment information in the decision-making process based on quality management and ultimately reduce NDF costs by visualizing them separately by major variable factors.