• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.14 no.4
• /
• pp.257-268
• /
• 2021

As the variety and scale of facilities increase due to industrialization and urbanization, blind spots for facility safety management have occurred, resulting in numerous casualties.To meet safety and security needs of citizens living in smart cities, we present a procedure for establishing an integrated platform for facility safety management by combining 5G and digital twin technologies. It can be used to perform inspection according to risk factors and aging of facilities. In this paper, the current status of facility management and application directions of new 5G digital twin-based smart city technologies are reviewed and digital twin implementation procedures are presented. Five cities were selected as target areas: Osan, Gwangmyeong, Guri, Uijeongbu, and Anyang. Old and emergency facilities of each local government were selected. A total of 33 digital twin facilities reflecting policy directions of each city were selected. Focusing on facilities determined by each city, the purpose of this study was to define information technology infrastructure elements for the application of the 5G digital twin facility safety management integrated platform, define categories of implementation services, and suggest a concrete integrated platform configuration plan.

• Journal of Digital Convergence
• /
• v.12 no.8
• /
• pp.345-350
• /
• 2014

The most important decision of process planning for the manufacturing system is the machine selection problem to minimize machining costs. Each machine has its own different machining performance indicating a different fraction of scrap, making the cost of scrap generated by machining is different for each machine. Therefore, when we decide on machine selection, we must consider the machining cost and the cost of scrap generated. This paper describes the statistical model for the fraction of scrap generated by machining and the machine selection algorithm considering the total cost including the machining cost and the cost of scrap generated.

• The Transactions of the Korea Information Processing Society
• /
• v.4 no.7
• /
• pp.1706-1718
• /
• 1997

The rapid increase in the use of many commercial software products has necessitated a systematic and objective method of their evaluation and selection. Our study focuses on the assignment of weights and choice of proper models. First, the weights of attributes are assigned consistently by using the analytic hierarchy process. Second, many models, which can be suitable for the structure of evaluation and selection for software product, are collected, categorized into two types of model, and compared in terms of their strength and weakness. The models involved are four compensatory models and seven noncompensatory models. Finally, they are analyzed through the application of specific software products(database data modelers) in terms of their attributes. Our study enhances the applicability of models to a variety of user requirement utilizing the evaluating procedure and applications.

• Proceedings of the Korean Society of Disaster Information Conference
• /
• 2023.11a
• /
• pp.180-181
• /
• 2023

2022년 1월 「중대재해처벌법」시행 후 기업에서 경영책임자로써의 안전보건확보 의무에 대한 책임이 강화되어 건설산업에서는 안전보건관리체계를 구축하고 이행 확인 활동을 통하여 중대산업재해예방에 노력하고 있다. 동법 시행령 제4조 제9호에서 요구하는 안전보건 역량을 평가하여 업체를 선정할 수 있는 기준과 절차 즉'적격수급업체 선정체계'가 중대산업재해 예방에 핵심과제라 할 수 있으며, 이를 위해서는 안전보건수준을 평가할 수 있는 시스템이 필요하다. 이에 건설업에서 민간기업 스스로 적격수급업체 선정을 위한 안전보건수준평가를 운영하고 있으나 전문성과 신뢰성이 부족하다. 또한 민간 건설업체마다 안전보건수준 평가방법이 명확하지 않고 표준화 되어 있지 않아 하수급업체에서는 입찰마다 평가 수검을 받고 있어 효율성이 낮게 나타나고 있다. 본 연구는 선행연구 고찰과 공공기관에서 운영되고 있는 건설업 원도급사에 관한 안전 평가제도 실태조사를 통하여 하수급업체 안전보건수준평가 인증제도의 필요성을 확인하였다. 이에 건설업의 적격수급업체 선정체계 운영이 필요한 표준화된 안전보건수준 인증제도 도입 방안을 제시하기 위함이다.

• 월간 기계설비
• /
• s.232
• /
• pp.50-70
• /
• 2009

T.A.B란 공기조화설비에 대한 종합시험조정으로 시험, 조정 및 균형(Testing, Adjusting & Balancing)이라는 뜻이다. 이는 설계 목적에 부합되도록 모든 빌딩의 환경시스템을 검토하고, 조정하는 과정이다. 따라서 T.A.B기술은 공기 및 물이라는 유체의 흐름과 온 습도에 관련된 분야이기 때문에 시각적으로 그 성과를 알아보기 힘들고, T.A.B를 적용한 후 결과치를 정밀 분석해 판단할 수 있으며 T.A.B기술을 적용하지 않은 건물과 간접비교하는 방법으로 그 효과를 쉽게 알 수 있다. T.A.B기술을 적용할 경우 시공 중인 건물에 설계도서가 완료되기 전, 또는 장비의 구매발주 전에 T.A.B측면에서 모든 기술 도서를 면밀히 검토하게 된다. 그 중 일부에서 발견되는 문제점들 즉, 적정치 못한 용량 선정, 시스템 구성상 미비점, 불필요한 장비 선정, 누락 사항을 발견할 수 있다. 따라서 T.A.B 기술을 적용할 경우 향상된 품질의 시공이 가능해 준공 후 빈번히 대두되는 하자 문제가 현격히 줄게 되며 또한 운전경비 절감, 쾌적한 실내환경 조성, 장비수명 연장 등 효율적인 운전관리 효과를 얻을 수 있다. 우리나라 공기조화설비기술은 꾸준한 발전을 이루었고, 최근에는 도입 초기단계시 전혀 고려되지 않던 공조공간의 쾌적성 및 소음 방지 대책 등의 문제가 주요사항으로 부각되고 있다. 이에 따라 공조설비에 T.A.B실행의 표준화 정착과정에 있으며, 국내 학계 및 연구기관에서 공조설비에 대한 연구 및 T.A.B용역업체의 기술축적 등 T.A.B분야 발전을 위해 노력하고 있다. 본지는 T.A.B의 수행절차 및 수행계획, TAB 수행업체 등에 대해 알아본다.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.13 no.4
• /
• pp.813-818
• /
• 2018

In this paper, the assessment items were selected for water by drought, water quality by drought, and thermal diseases by heat wave. We described the selection background for these assessment items. and then we weighted the selected vulnerability assessment items. The vulnerability assessment procedures also describe the calculation methods applied in phases and the actual cases. The vulnerability assessment database was analyzed and a climate change vulnerability assessment system for heat waves and droughts using these vulnerability assessment procedures was designed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.469-472
• /
• 2003

A life cycle cost analysis model for public water supply systems should be different from the ones for other civil and architectural facilities as the operation and the maintenance cost of the water supply systems mainly come from the various mechanical systems and the pipeline systems of the collecting/treating/distributing facilities. This paper presents a cost classification scheme and a life cycle cost analysis model for public water supply systems. A value analysis (VA) procedure that is well suited for practical purposes is also presented. The presented life cycle model and the value analysis procedure were applied to a real world project, and this case study is discussed in the paper. The model and the procedure presented in this study can greatly contribute to the value-oriented design alternative selection, the estimation of the maintenance cost, and the allocation of budget for water supply system construction projects.

• Korean Journal of Construction Engineering and Management
• /
• v.5 no.2 s.18
• /
• pp.181-193
• /
• 2004

A life cycle cost analysis model for public water supply systems should be different from the ones for other civil and architectural facilities as the operation and the maintenance cost of the water supply systems mainly come from the various mechanical systems and the pipeline systems of the collecting/treating/distributing facilities. This paper presents a cost classification scheme and a probabilistic life cycle cost analysis (PLCCA) model for public water supply systems. A value analysis (VA) procedure that is well suited for practical purposes is also presented. The presented probabilistic life cycle model and the value analysis procedure were applied to a real world project, and this case study is discussed in the paper. The model and the procedure presented in this study can greatly contribute to the value-oriented design alternative selection, the estimation of the maintenance cost, and the allocation of budget for water supply system construction projects.

• Journal of Information Management
• /
• v.41 no.4
• /
• pp.165-186
• /
• 2010

This study aims to suggest the basis and criterion for the data deletion guideline to make the information systems effective and reduce the cost of system management. To make a frame of the guideline, we researched the laws and policies of USA, UK and Australia and the domestic laws and regulations related with the deletion of records. From this paper research, we prepared the draft guideline and gathered the opinion about it. Through this research and survey, we produced out the guideline including the criteria, the process and the way of data deletion. Adopting the guideline to a sample organization, we couldn't find any problem in deleting the unused data.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 1997.10a
• /
• pp.75-78
• /
• 1997

신제품 개발에 관련된 아이디어들을 모두 개발과제로 삼는것은 자원이용의 효율면에서 비능률적이다. 많은 아이디어들을 수집한 후 시장상황과 기업의 역량에 가장 일치하는 소수의 아이디어들을 개발과제로 선정해야 한다. 그러나 더 많은 지원자들이 응모한 기업이 더 적은 지원자들이 응모한 기업보다 더 유능한 종업원을 선발할 확률이 커지는 것과 마찬가지로 더 많은 아이디어들을 수집해야 더 탁월한 신제품 개발과제를 선정할 확률이 커진다. 즉, 아이디어들만 개발과제로 선정하는 절차가 필요하다. 때로는 신제품 개발에 관련된 아이디어들이 부족한 경우도 발생하여 체계적인 아이디어를 생성하는 방법론이 필요하다. 여기에서는 신제품 개발 주관 부서에서 체계적으로 아이디어를 확대하는 방법을 살펴본다.