• 국제학술발표논문집
• /
• The 8th International Conference on Construction Engineering and Project Management
• /
• pp.96-102
• /
• 2020

The construction industry remains serious accidents, injuries, and fatalities due to it's unique, dynamic, and temporary nature. On workplace sites, Safety pre-task planning is one of the efforts to minimize injuries and help construction personnel to identify potential hazards. However, the working conditions are complicated. Many activities, including tasks or job steps, are executing at the same time and place. It may lead to an increase in the risks from simultaneous tasks. This paper contributes to addressing this issue by introducing a safety risk interaction analyzing framework. To accomplish this objective, accident reports of the Occupational Safety and Health Administration (OSHA) are investigated. The pairs of task incompatibility, which have time-space conflicts and lead to incidents, are found. Ontology technology is applied to build the risk database, in which the information is acquired, structuralized. The proposed system is expected to improve pre-task planning efficiency and relieve the burdens encountered by safety managers. A user scenario is also discussed to demonstrate how the ontology supports pre-task planning in practice.

• Journal of Construction Engineering and Project Management
• /
• 제9권4호
• /
• pp.1-15
• /
• 2019

Since its adoption by the transportation sector in the early 1990s, partnering has been broadly used with the traditional delivery method by many agencies with significant reported benefits. During the same era, a number of transportation agencies (DOTs) started experimenting with a wide variety of alternative project delivery methods (APDMs) aimed at improving the delivery of highway construction projects. The effect of collaborative working strategies such as partnering, together with the APDMs have become somehow interrelated posing a potential challenge on how to effectively integrate partnering as a concept in the APDMs. The salient question has been if the collaborative nature of these APDMs has affected how partnering is being used by state DOTs. Through an extensive literature review, analysis of 32 CMGC RFPs/RFQs and review of three CMGC case studies, the study found that there is limited information in state DOT documents that show procedures on the usage of partnering with CMGC projects. Majority of DOTs are relying on the inherent nature of the CMGC contract to promote healthy collaborative practices and there is the need to consider partnering during preconstruction and construction separately to cater for any personnel change over. The study also revealed that partnering may become less important at the construction phase due to overlap between partnering and CMGC practices. In support of this finding, a CMGC partnering model was developed that can be adopted by DOTs. This paper contributes to both research and practice by expanding the existing knowledge on partnering on APDMs.

• 한국방재안전학회논문집
• /
• 제13권1호
• /
• pp.41-50
• /
• 2020

전문건설 업체의 안전보건경영시스템 도입·구축·운용은 안전시스템 도입과 운영 과정에 소요되는 비용이 발생하는 문제가 있다. 그리고 건설 안전 분야 기술 인력을 보유하지 못한 열악한 환경에서 안전시스템 구축 및 인증 취득 및 정착으로의 선순환 체계 구축이 쉽지 않은 실정이다. 이 논문의 목적은 건설업 안전보건경영시스템 관련 문헌을 조사·검토하고 실태 등 다양한 연구 동향을 분석하는 데 있다. 이를 통하여 건설업 안전보건경영시스템 구축 및 인증을 취득하고자 하는 전문건설 업체와 인증 취득 후 사후심사 및 연장심사를 이행 중인 전문건설업체의 안전보건경영시스템 수준 향상을 위한 방안을 모색하는데 있다.

• 한국항공운항학회지
• /
• 제25권3호
• /
• pp.123-134
• /
• 2017

In order to advance into the MRO industry, the Aviation maintenance organization with suitable for the standards for personnel, facilities and operations should be first approved by FAA and EASA. The purpose of study is designed to arrange the standards required for personnel, facility, operation rule for approval of Repair Station maintenance organizations certified by FAA PART 145 of the US Federal Aviation Regulation. Also to consider the following differences through the comparative analysis with domestic AMO certification of the information in the Management, Maintenance Process, and Quality System for approval of maintenance organization authorized, the additional EASA PART 145. As a comparative analysis on maintenance organization certification in the country between FAA and EASA, this study could show us that domestic maintenance organization, certified manual contents are used by applying just many of the FAA system. And we could know that as part of the EASA maintenance organization certification process, airmen personnel were relatively systematically segmented and controlled. For domestic maintenance organization certification, operational as policy implications we would like to present policy implications such as the implication of rating system of Aviation Mechanic License like EASA, the financial support of the training center to resolve the shortage of the FAA or EASA license holders, operational organization as "CAMO" for systematic aviation mechanic certified system should be required, continued construction of hangar or MRO for airworthiness repair under Governmental support, and varied application of DER system from FAA accordingly.

• 한국전자통신학회논문지
• /
• 제17권3호
• /
• pp.473-482
• /
• 2022

코로나 시대에서 감염의 위험을 줄이기 위하여 반드시 마스크를 착용하여야 하며, 건축 공사장과 같은 위험한 작업 환경에서 일하는 직원의 안전을 위하여 헬맷을 쓰는 것은 필수불가결하다. 본 논문에서는 헬멧과 마스크의 착용 여부를 분류하는 효과적인 딥러닝 모델 HelmetMask-Net를 제안한다. HelmetMask-Net은 CNN 기반으로 설계되며, 전처리, 컨벌류션 계층, 맥스풀링 계층과 4 가지 출력이 있는 완전결합 계층으로 구성되며, 헬멧, 마스크, 헬멧과 마스크, 헬멧과 마스크을 착용하지 않은 4 가지 경우를 구분한다. 정확도, 최적화, 초월 변수의 수를 고려한 실험으로 2 컨볼루션 계층과 AdaGrad 최적화를 가진 구조가 선정되었다. 모의 실험 결과 99%의 정확도를 보여 주었고, 기존의 모델에 비하여 성능이 우수함을 확인하였다. 제안된 분류기는 코비드 19 시대에 직원의 안전을 향상시킬 수 있을 것이다.

• 한국BIM학회 논문집
• /
• 제8권3호
• /
• pp.31-42
• /
• 2018

This study focuses on the BIM request for information(RFI) processing performance and quantitatively analyzes the performance of the BIM coordinator and the loss due to the waiting of the project participants. For these purposes, a method to quantitatively evaluate the performance of the BIM coordinator was proposed using a queueing model. For the verification, two projects in which BIM was applied in the construction phase were selected, and the BIM RFI data were collected through the analysis of the BIM monthly report and BIM coordinator work log of each project. In addition, the BIM input personnel, labor cost, and productivity data were collected through interviews with the experts of the case projects. The analysis of the BIM RFI processing performance of the BIM coordinator using the queueing model exhibited on a probabilistic basis that the waiting status of the project participants could vary depending on the preliminary BIM application to the design verification as well as the input number and level of the BIM coordinator personnel. In addition, the loss cost due to the waiting of the project participants was analyzed using the number of BIM RFIs waiting to be processed in the queueing system. Finally, the economic feasibility analysis for the optimal BIM coordinator input was performed considering the loss cost. The results of this study can be used to make decisions about the optimal BIM coordinator input and can provide grounds for the BIM return on investment (ROI) analysis considering the waiting cost of the project participants.

• 한국건축시공학회지
• /
• 제3권1호
• /
• pp.131-138
• /
• 2003

Contemporary architecture calls for a wide range of surface textures and treatments. A surface compatible with the architect's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study is development of new design form and made elaborateness shape. Architecture finish material not used expenses working hours, personnel expenses, architecture finish material cost. After this, building wall apply a variety shape in concrete surface and Easy to used in field.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2004년도 학술.기술논문발표회
• /
• pp.109-112
• /
• 2004

Contemporary, architecture calls for a wide range of surface textures and treatments. A surface compatible with the architecture's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose, of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost, through this study, we have figured out the best mix proportion for durability and glossability of glossing exposure concrete.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2002년도 학술논문발표회
• /
• pp.27-30
• /
• 2002

Contemporary architecture calls for a wide range of surface textures and treatments. A surface compatible with the architect's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surfaces require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost. After this, building wall apply a variety shape in concrete surface.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
• /
• pp.129-130
• /
• 2019

In this research, we determine the proper number of entrances in the evacuation facilities for civil and military personnel. The current standards on the emergency evacuation facility only sets the number of possible evacuees and the according architectural floor area since the evacuation have been completed. However, other than static standards such as the floor area, there is needs to consider the dynamic standards along with allowable evacuation time such as the number of entrance, staircases and so on. Therefore, we need to consider the number of entrances and their location in order to account for the allowed evacuation time of particular number of people in a set area. The outcome could be contributed to the standards which should contain the dynamic conditions associated with evacuation.