• Proceedings of the Computational Structural Engineering Institute Conference
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• 2010.04a
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• pp.226-229
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• 2010

본 연구에서는 데이터 저장의 질적 향상을 도모하는 XML 스키마 매칭의 효율적 활용방안을 제시하였다. 이를 위하여 매칭의 가중치의 변화에 따라 달라지는 정확도 데이터를 수집하고, 수집한 데이터를 활용하여 데이터 마이닝 기법 중 하나인 의사결정나무 모델을 수립하였다. 수립모델을 응용하여 구현한 가중치 자동선정 모듈은 설명변수인 교량의 형식, 문서가 포함하고 있는 요소의 수, 문서를 작성한 회사 등의 값에 따라 의사결정나무 모델의 목표변수인 정확도뿐만 아니라, 가장 높은 정확도를 보일 수 있는 가중치까지 간접적으로 제안가능하다. 본 연구로 구현한 모듈을 통해 제안된 XML 스키마 매칭 가중치를 활용하면 그렇지 않은 경우에 비하여 약 10% 정확도 상승효과가 있음을 알 수 있었다.

• Journal of KIBIM
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• v.12 no.1
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• pp.10-22
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• 2022

Prefabricated bridges require strict management of tolerance during fabrication and assembly. In this paper, digital engineering models for prefabricated bridge components such as deck, girder, pier, abutment are suggested to support information delivery through the life-cycle of the bridge. Rule-based modeling is used to define geometry of the members considering variable dimensions due to fabrication and assembly error. DfMA(design for manufacturing and assembly) provides the rules for ease of fabrication and assembly. The digital engineering model consists of geometry, constraints and corresponding parameters for each phase. Alignment and control points are defined to manage tolerances of the prefabricated bridge during fabrication and assembly. Quality control by digital measurement of dimensions was also considered in the model definition. A pilot bridge was defined virtually to validate the suggested digital engineering models. The digital engineering models for DfMA showed excellent potential to realize prefabricated bridges.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.248-251
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• 2002

The cooperative relation between construction engineering firms and design subcontractors is essential to establish design collaboration system. So, this study is initiated with providing a strategic cooperation scheme between construction engineering firms and design subcontractors. A number of literatures related to the design process for engineering firms were reviewed in order to investigate the design collaboration system. A questionnaire survey was peformed to collect and analyze the expert opinion on the current design collaboration system for engineering firms. It is expected that the cooperation scheme can be utilized to improve the cooperative relation between construction engineering firms and design subcontractors.

• Journal of the Korean Society of Systems Engineering
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• v.4 no.2
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• pp.55-61
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• 2008

In this paper, there is the case study which assesses the systems engineering capability maturity of the safety organization that performs the Railway Safety project using systems engineering method. To In ore effective and efficient a research and development to railway safety domain, a new research and development method can be progressively needed such as systems engineering. To assess quantitatively research of systems engineering efforts in the railway safety project, SECM(EIA/IS 731) Standard is utilized in the paper. It is by questionnaire that the capability maturity assessment is executed wit h the safety organization and staffs who performs the systems engineering activities; requirement analysis and management, interface control management. product verification and validation, and so on. As a result, the systems engineering capability level of the safety organization rises from 0 level at the initial project to 2 level after two years and all staffs give an affirmative answer about the importance and effectiveness of the systems engineering approach.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.730-733
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• 2008

원자력 발전소 정보 관리 시스템인 GPM 시스템에서 원자력 발전소 유지보수 프로세스에서 발생하는 도면, 문서 등 데이터와 비즈니스 프로세스를 모델링한 데이터 모델을 범용 제품 모델 (GPM, Generic Product Model) 클래스 라이브러리에 통합하였다. 이를 통해 제시하는 표준 데이터 모델은 지능적 P&ID 시스템의 기본 데이터 모델로 사용될 수 있으며, 이를 기반으로 향후에는 지식화된 정보 서비스 제공이 가능하게 된다.

• Journal of Software Engineering Society
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• v.24 no.2
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• pp.67-75
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• 2011

In order to improve working speed, add more functions and provide better user interface of ASADAL, the AWT based Java application to support FORM Software Product Line Development Methodology; we had to reengineer this application to be Eclipse based plug-in application. In order to improve working speed, add more functions and provide better user interface of ASADAL, the AWT based Java application to support FORM Software Product Line Development Methodology; we had to reengineer this application to be Eclipse based plug-in application. And then, this paper introduces the plug-in developed by applying guidelines presented in the reengineering cases of ASADAL's feature model editor and behavior model editor.

• Journal of Engineering Education Research
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• v.9 no.2
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• pp.52-70
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• 2006

Systems Engineering(SE), as a special discipline evolved from multidisciplinary and interdisciplinary design knowledges and practical lessons learned from development practices, is required to develop today's ever-growing large complex systems. As computer speed and analytic sophistication accelerate their applications, modern society's needs have become increasingly varied and complex. Rapid advances in Systems Engineering and its education programs among the developed countries demonstrate their needs as an alternative to what is lacking from traditional disciplinary engineering to meet new challenges of our changing social environments. Systems Engineering is an interdisciplinary approach that includes both management and technical processes. Its processes, methods, and tools are used to evolve, define, and verify an integrated, life-cycle balanced set of system solution that satisfy customer needs and requirements. The process methodology offers a top-down comprehensive, iterative and recursive problem solving process which includes the stating the problems, investigating the alternatives, architecting and modeling the system, integrating and operating the system, assessing and re-evaluating the system performances. The purpose of this paper is to research the cases of SE educational programs for both domestic and other developed countries and to propose recommendations for the domestic SE educational programs in the future.

• Journal of the Korean Society of Systems Engineering
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• v.4 no.1
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• pp.11-18
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• 2008

As a government agency or the Government-donated Research Institute or industrial research institute is intended to develop a product or to construct a system such as a railway safety systems by research and development process, a life cycle model leading a product development or a research and development is essential to them to systematically and effectively progress it. In this paper, the refined life cycle model to effectively conduct the national railway safety project consists of the life cycle phases and their detail descriptions with reference to other life cycle model in the international standard and the other national guidance and other industrial domain such as ship-building, weapon system, and aerospace areas, the proposed life cycle model in the paper considerably reflects the characteristics of the traditional research and development project in railway safety domain. A guidance of a life cycle model which based on lots of the life cycle model in other domains proposes additionally.

• Journal of the Korean Society of Systems Engineering
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• v.13 no.1
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• pp.1-6
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• 2017

A stores management software which is embedded in the stores management system requires high-level reliability and real-time processing. It also required to implement and verify protocols which requires timing constraints to control various weapons. In this paper, we propose design methodology to design a stores management software and its support middleware based on the TMO (Time-triggered Message-triggered Object) model.

• Proceedings of the KAIS Fall Conference
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• 2012.05b
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• pp.674-676
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• 2012

본 논문에서는 3차원 설계데이터가 부재한 디젤엔진 실린더 헤드의 흡기포트 데이터를 확보하기 위하여 리버스 엔지니어링 기법을 적용하였다. 획득된 해석 모델을 이용하여 디젤엔진 흡기포트에 대한 유동해석을 수행하였으며, 텀블 유동과 스월유동의 존재를 해석 결과로서 확인할 수 있었다. 이러한 기법의 적용은 향후 3차원 설계데이터가 부재한 엔진이나 경쟁엔진의 분석에 유용하게 적용될 수 있을 것으로 판단된다.