• Title/Summary/Keyword: Neutral schema

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A Study on Product Information Exchange between Heterogeneous Systems including Commercial PDM Systems (상용 PDM을 포함한 이기종 시스템 간의 제품정보 교환에 관한 연구)

  • Yang, Tae-Ho;Yoon, Tae-Hyuck;Choi, Sang-Su;Noh, Sang-Do
    • Korean Journal of Computational Design and Engineering
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    • v.13 no.3
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    • pp.175-186
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    • 2008
  • For the success to PLM in manufacturing industries, the creation, management and coordination of all product-related information are essential, and the exchange of product information and data has become an important part of the product development. In this paper, we define the neutral schema, and it refers to PLM Services. Based on this neutral schema, we develop the PLM Integrator to exchange product information and data between diverse heterogeneous systems including PDM systems. We apply the PLM Integrator developed in this paper to commercial PDM systems such as SmarTeam, Teamcenter Engineering and MEMPHIS which is a data exchange middleware system for VR applications. By implementations, exchanges of product information and data can be done without loss of information. Also, the PLM Integrator can upload and download product information, data and related files. The result of this paper can not only reduce unnecessary efforts for data exchanging between different information systems including PDM/PLM systems but also provide a collaborative environment for PLM.

Schema of Maintenance Data Exchange and Implementation Applied To Ship & Offshore Platform

  • Son, Gum Jun;Lee, Jang Hyun
    • Journal of Advanced Research in Ocean Engineering
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    • v.4 no.3
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    • pp.96-104
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    • 2018
  • The importance of data management for the efficient maintenance and operation of offshore structures is becoming increasingly important. This paper has discussed the data schema and business rules that standardize the data exchange between ship design, operation and maintenance. Technical documentation that meets the international standards of ShipDex and S1000D for exchanging the operation and management data in neutral or standard formats has been introduced into the life cycle management of ships. The schema of the data exchange is represented by XML (eXtensible Markup Language) and the lifecycle data is implemented by a structured document. Lifecycle data is represented as data modules defined by XML schema. Given the feasible data generation, an example of a technical document is introduced by a general XML authoring tool.

An Integrated Translation of Nuclear Power Plant Design Data ftom Specification-driven Plant Design Systems to a Neutral Product Model (사양 기반 플랜트 설계 시스템에서 생성된 원자력 플랜트 설계 데이터의 중립 모델로의 통합 변환)

  • Mun, Du-Hwan;Yang, Jeong-Sam;Han, Soon-Hung
    • Korean Journal of Computational Design and Engineering
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    • v.14 no.2
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    • pp.96-104
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    • 2009
  • It gradually becomes important to study on how to efficiently integrate and manage plant lifecycle data such as 2D schematic and 3D solid data, logical configuration data, and equipment specifications data. From this point of view, converting plant design data from various systems into neutral data independent from any commercial systems is one of important technologies for the operation and management of plants which usually have a very long period of life. In order to achieve this goal, a neutral model for efficient integration and management of plant data was defined. After schema mapping between one of specification-driven plant design systems and the neutral model was performed, a plant data translator is also implemented according to the mapping result. Finally, by experiments with nuclear power plant design, the feasibility of the translator was demonstrated.

STEP-Based Information Exchange for Structural Analysis and Optimization (STEP을 이용한 구조해석 및 최적설계 정보교환)

  • Baek, Ju-Hwan;Min, Seung-Jae
    • Korean Journal of Computational Design and Engineering
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    • v.12 no.1
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    • pp.8-14
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    • 2007
  • In the product design process computer-aided engineering and optimization tolls are widely utilized in order to reduce the total development time and cost. Since several simulation tools are involved in the process, information losses, omissions, or errors are common and the importance of seamless information exchange among the tools has been increased. In this work, ISO STEP standards are adopted to represent the neutral format for structural analysis and optimization. The schema of AP209 defined the information of finite element analysis is used and the new schema is proposed to describe the information of structural optimization based on the STEP methodology. The schema is implemented by EXPRESS, information modeling language, and ST-Developer is employed to generate C++ classes and STEP Rose Library by using the schema denoted. To substantiate the proposed approach, the information access interfaces of the finite element modeling software (FEMAP), structural optimization software(GENESIS) and in-house topology optimization program are developed. Examples are shown to validate the information exchange of finite element analysis and structural optimization using STEP standards.

STEP-Based CAE/CAO Information Exchange (STEP을 이용한 CAE/CAO 정보교환)

  • Baek, Ju-Hwan;Min, Seung-Jae
    • Proceedings of the KSME Conference
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    • 2003.04a
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    • pp.1234-1239
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    • 2003
  • In the product design process computer-aided engineering and optimization tools are widely utilized in order to reduce the total development time and cost. Since several simulation tools are involved in the process, information losses, omissions, or errors are common and the importance of seamless information exchange among the tools has been increased. In this study ISO STEP standards are adopted to represent the neutral format for CAE/CAO information exchange. The schema of AP209 is used to define the information of finite element analysis and the new schema is proposed to describe the information of structural optimization based on the STEP methodology. The schema is implemented by EXPRESS, information modeling language, and ST-Developer is employed to generate C++ classes and STEP Rose Library by using the schema denoted. To substantiate the proposed approach, the information access interfaces of the finite element modeling software (FEMAP), structural optimization software (GENESIS) and in-house topology optimization program are developed. Examples of the size optimization of a three-bar truss and topology optimization of a MBB beam are shown to validate the information exchange of finite element analysis and structural optimization using STEP standards.

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A study on the Interface architecture of an Integrated system for steel structure (철골구조 통합시스템의 인터페이스 구조 제시)

  • 박근운;천진호;이병해
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2000.04b
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    • pp.405-412
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    • 2000
  • This paper is the study of methodology for development of interface structure modules for an integrated system or steel framework structures. For development of the modules, it is used that data translation for the Steel Detail Neutral File(SDNF) format and the methodology have contacted individual systems in integrated system. The point of methology is translated system interface data with ASCⅡ format of system output and is presented with EXPRESS-G schema model. In the future, these neutral format will use structural design, engineering, facilities management, fabrication, etc. Therefore such a series of neutral formants is valuable to development of all structure fields.

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Methodology of Fire Safety IFC Schema Extension through Architectural WBS Hierarchy Analysis (건축 WBS 위계 분석을 통한 소방 IFC 스키마 확장 방법론에 관한 연구)

  • Kim, Tae-Hoon;Won, Jung-Hye;Hong, Soon-Min;Choo, Seung-Yeon
    • Journal of KIBIM
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    • v.12 no.4
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    • pp.70-79
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    • 2022
  • As BIM(Building Information Modeling) technology advances in architecture around the world, projects and industries using BIM are increasing. Unlike previous developments that were limited to buildings, BIM is now spreading to other fields such as civil engineering and electricity. In architecture, BIM is used in the entire process from design to maintenance of a building, and IFC(Industry Foundation Classes), a neutral format with interoperability, is used as an open BIM format. Since firefighting requires intuitive 3D models for evacuation and fire simulations, BIM models are desirable. However, due to the BIM model, which was developed centered on building objects, there are no objects and specific properties for fire evacuation in the IFC scheme. Therefore, in this study, when adding a new object in the firefighting area to the IFC schema, the IFC interoperability is not broken and the building WBS(Work Breakdown Structure) is analyzed with a hierarchical system similar to the IFC format to define the scope for a new object and the firefighting part within of the building WBS to derive a firefighting HBS(Hierarchy Breakdown Structure) with the extension of the object-oriented IFC file. And according to HBS, we propose an IFC schema extension method. It is a methodology that allows BIM users to instantly adapt the IFC schema to their needs. Accordingly, the methodology derived from this study is expected to be expanded in various areas to minimize information loss from IFC. In the future, we will apply the IFC extension methodology to the actual development process using HBS to verify that it is actually applicable within the IFC schema.

The Implications of Content Schemata for Standardized Reading Tests

  • Lee, Jong-Hee
    • English Language & Literature Teaching
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    • v.9 no.spc
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    • pp.79-98
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    • 2003
  • This article reports that a testee's content schemata have detrimental effects on the validity of standardized reading comprehension tests. in case that the reading passages constitute his prior background knowledge framed by regular academic pursuits focused on a major field of study. The empirical research findings on such a reliability issue have shown that the Korean subjects' familiarity with the content domain of the reading materials may substantially enhance their test performance, operated as unfair advantages over the other participants at the same level of English proficiency who do not possess technical knowledge closely related to the contents of the test passages. Based on these results, it may be argued that the reading text should be composed of maximally neutral contents to every testee to avoid the possible overlapping between a test-taker's content schemata and the content domain of the materials. Therefore, this article claims that the tenets of schema theory with its long-standing foundation on culturally predetermined content and formal schemata need to be expanded to cover professional knowledge structures, like those acquired by higher education, as the hard-wired framework of an individual's original culture-specific background knowledge.

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