• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.528-535
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• 2011

According to railway safety regulations for securing the railway vehicle's quality and performance, it can be partly exempted that the performance tests and production inspections on the railway vehicles which are produced and assembled for the purpose of test and research. The reasons of this exemption are for ensuring maximum autonomy and for saving time considered the development period of railway vehicle. However, it was continuously demanded the necessity of supplementation on the confirmation about railway vehicle's quality & performance. Therefore, we added "The monitoring step" which is for securing the quality and performance in high speed railway vehicle's subsystem & compartment to supplement those tests & inspections in development. In this paper, based on a standard ABS(Activity Breakdown Structure) of railway vehicle and a WBS(Work Breakdown Structure) of the railway vehicle system, we investigate the necessity of monitoring in the High speed railway vehicle development. And by comparing and analyzing the essential requirements of international standard, IRIS(International Railway Industry Standard) & TSI(Technical Specification for Interoperability), we try to examine a standard monitoring procedure.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2008년도 정기 학술대회
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• pp.241-246
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• 2008

Design of a high-speed railway line requires collaboration of heterogeneous application systems and of engineers with different background. Object-based 3D models with metadata can be a shared information model for the effective collaborative design. In this paper, railway infrastructure information model is proposed to enable integrated and inter-operable works throughout the life-cycle of the railway infrastructures, from planning to maintenance. In order to develop the model, object-based 3-D models were built for a 10km railway among Korea high-speed railway lines. The model has basically three information layers for designers, contractors and an owner, respectively. Prestressed concrete box-girders are the most common superstructure of bridges. The design information layer has metadata on requirements, design codes, geometry, analysis and so on. The construction layer has data on drawings, real data for material and products, schedules and so on. The maintenance layer for the owner has the final geometry, material data, products and their suppliers and so on. These information has its own data architecture which is derived from similar concept of product breakdown structure(PBS) and work breakdown structure(WBS). The constructed RIIM for the infrastructures of the high-speed railway was successfully applied to various areas such as design check, structural analysis, automated estimation, construction simulation, virtual viewing, and digital mock-up. The integrated information model can realize virtual construction system for railway lines and dramatically increase the productivity of the whole engineering process.

• 한국항공우주학회지
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• 제33권12호
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• pp.83-91
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• 2005

최근 활발한 연구가 진행 중인 공중발사 방식은 극소형 위성을 매우 저렴한 비용으로 발사할 수 있는 효율적인 방법이다. 본 연구에서는 비교적 단순한 임무를 수행할 수 있는 나노 위성을 공중발사 방식을 이용하여 원 궤도에 올릴 수 있는 공중발사 로켓 시스템설계와 각 단별 계통 설계를 수행하였다. 이를 위하여 공중발사 로켓 시스템의 WBS와 각 계통별 작동개념도를 정립하였고, 이를 바탕으로 시스템 세부형상과 DMU를 구현하였다.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2005년도 제25회 추계학술대회논문집
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• pp.293-298
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• 2005

최근 활발한 연구가 진행 중인 공중발사 방식은 극소형 위성을 매우 저렴한 비용으로 발사할 수 있는 효율적인 방법이다. 본 연구에서는 비교적 단순한 임무를 수행할 수 있는 나노 위성을 공중발사 방식을 이용하여 원 궤도에 올릴 수 있는 공중발사 로켓 시스템설계와 각 단별 계통 설계를 수행하였다. 이를 위하여 공중발사 로켓 시스템의 WBS와 각 계통별 작동개념도를 정립하였고, 이를 바탕으로 시스템 세부형상과 DMU를 구현하였다.

• 한국건축시공학회지
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• 제11권6호
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• pp.567-575
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• 2011

공정계획 전산 tool은 건설정보화의 발전에 따라 반드시 필요한 도구이나 이를 활용하기 위한 여건과 사용자의 이해가 부족한 것이 현실이다. 특히 현행 공정관리 정보화 시스템에 대한 실무자의 의견조사 결과가 부정적인 이유가 공정계획 이전의 관리기획단계 정보의 내용과 기술사항이 부재함에 따라 공정기획 전문가 이외는 접근의 어려움이 있는 것으로 분석되었으며 이에 공정관리 전산화의 최적화에 대한 사용자의 요구와 시스템의 개선방향을 고찰하였고 이를 통한 기존시스템의 단점 개선과 건설업에 특화된 전문시스템의 개발을 도모하고자 하였다. 이에 WBS, CBS를 통합한 '통합 WBS(IWBS)'의 구축 및 OBS와의 상호 연계(Link)를 위해서는 데이터의 호환성과 운용 정보의 통합기술이 무엇보다도 중요하다고 판단 되며, 프로젝트 단위(WBS level 1), 사업시설 단위(WBS level 2), 관리직능 단위(OBS level 1) 및 관리엔지니어 단위(OBS level 2)의 4단위 지수에 대한 데이터코딩을 통해 변화하는 공사정보 즉 공사량, 공사원가, 소요공기 그리고 관리부서로 정보의 일관성을 높이기 위한 전산시스템의 개발이 필요한 것으로 나타났다.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.30-37
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• 2020

In the building construction, the steel-frame work occupies an important position in terms of structure, cost and quality. Especially in Japan, steel frames have traditionally been the main structure of many buildings. For steel-frame works in such positions, this paper investigates an existing steel fabricator to clarify the actual conditions of design decision making process and management method in steel production process. This study focuses on a steel fabricator (Company M in the following sentences), whose main market is Japan and which has facilities in Thailand, China, and Japan. Company M uses QR codes to control the production status of products, and exchanges all information between inside and outside the company via specialized departments in the form of documents. The authors have already analyzed the relationship between production lead time and defect rate based on actual project data at Architectural Institute of Japan in 2016. In 2019, we expressed the process from the confirmation of the design information of the current steel frame to the production by WBS, and clarified the relationship between the production lead time and steel frame product quality structurally. In this paper, the authors reoport the progress of the survey conducted so far, the positioning of the collected data, and the future survey policy.

• 대한토목학회논문집
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• 제43권1호
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• pp.109-117
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• 2023

건설공사에서의 공기지연은 공사금액 증가, 발주처 클레임, 무리한 공기단축에 따른 건설공사의 질 하락 등 건설프로젝트에 악영향을 끼치는 주요 리스크 요인이다. 기존 연구에서는 공기지연 리스크의 중요도 및 우선순위를 파악하고 중요도에 따라 공정을 관리하였으나, 공기지연 리스크의 심도는 데이터 수집의 한계 등으로 정량화 연구가 미흡하다. 따라서 본 연구에서는 BERT (Bidirectional Encoder Representations from Transformers) 언어 모델을 활용하여 비정형데이터로 저장된 공사일지의 작업내용을 분석 가능한 WBS (Work Breakdown Structure) 기반의 정형데이터로 변환하고 리스크 분류 및 도출 체계, 공정계획에 사용가능한 리스크 발생확률, 리스크 확률분포(심도)의 정량화 방안을 제시하였다. 제안된 프로세스를 고속도로공사 8개 공구에 적용하여, 39개 세부 공중 중 8개의 세부 공종에서 75건의 우천 공기지연 리스크를 도출하였다. K-S 검정을 통해 4개 공종에서 유의미한 확률분포를 도출하였으며 위험도를 비교하였다. 향후 본 연구에서 제시된 프로세스는 시공단계에서 발생하는 다양한 공기지연 요인의 도출 및 심도 정량화에 적용될 수 있을 것으로 기대된다.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
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• pp.709-712
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• 1996

Generating a project network of a specific construction project is very time consuming and difficult task in the field. To effectiviely automate and support the planning process, we design a case-based project planning expert system inspired by the fact a human expert project planner uses previous cases for planning a new project. A construction project case consist of its specific characteristics and the corresponding project network (i.e. project plan). Using frame based representation. we represent the project features affecting the progress network and the entities composing the project plan such as the buildings, construction methods, WBS (work breakdown structure), activities, and resources. The project planning process runs through most similar case retrieval, case adaptation, and user requirement satisfaction. We represent the construction domain knowledge for each procedure using constraints and rules. We develop the methodology for constraint-based case adaption. Case adaptation process mainly consist of activity generation/deletion and predecence constraint satisfaction, for which we develop the dynamic constraint generation method and connect user-level requirement representation the system-level network modification knowledge. The methodology is being applied to the prototype for apartment construction project planning.

• 한국철도학회논문집
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• 제10권2호
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• pp.103-111
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• 2007

The existing design materials by document type are restricted in searching and acquiring necessary design information because the materials consist of huge information and various document types. This study suggests a methodology to develop an electronic technical manual that can manage construction design materials by XML-base integrated information system. Electronic technical manual for design materials can provide visualized information through various multimedia tools such as multi-link, virtual reality and animation. Using an integrated electronic manual for construction project can prevent to miss necessary design information. The results of this study includes a data flow diagram to develop an interactive electronic technical manual (IETM) for construction design information. Finally the study suggests some scenarios for practical use and quantitative analysis of application effect analysis by AHP method.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
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• pp.217-220
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• 1996

This study presents a R&D performance monitoring system (RDMS) that is applicable for managing nuclear program in KAERI. The prime goal of RDMS is to furnish project manager with reliable and accurate information on status of progress, performance and resource allocation, and attain traceability and visibility of project implementation for effective project management. In this study, the work breakdown structure (WBS) as the governing factor for integration of scope, schedule, resource data was derived, and the above parameters were loaded personal computer. A RDMS is comprised of about 12,000 R&D activities of the 16 goverment-led projects. The Primavera software was used to monitor the progress, evaluate the performance and analyze the resource distribution to activities.