Academic literature on the topic 'Environment and development databank (Computer file)'
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Journal articles on the topic "Environment and development databank (Computer file)"
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Monteiro, Carlos, and José Leal. "Managing experiments on cognitive processes in writing with HandSpy." Computer Science and Information Systems 10, no. 4 (2013): 1747–73. http://dx.doi.org/10.2298/csis121130061m.
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Experiments on cognitive processes require a detailed analysis of the contribution of many participants. In the case of cognitive processes in writing, these experiments require special software tools to collect gestures performed with a pen or a stylus, and recorded with special hardware. These tools produce different kinds of data files in binary and proprietary formats that need to be managed on a workstation file system for further processing with generic tools, such as spreadsheets and statistical analysis software. The lack of common formats and open repositories hinders the possibility of distributing the workload among researchers within the research group, of re-processing the collected data with software developed by other research groups, and of sharing results with the rest of the cognitive processes research community. This paper describes the development of HandSpy, a collaborative environment for managing experiments in the cognitive processes in writing. This environment was designed to cover all the stages of the experiment, from the definition of tasks to be performed by participants, to the synthesis of results. Collaboration in HandSpy is enabled by a rich web interface. To decouple the environment from existing hardware devices for collecting written production, namely digitizing tablets and smart pens, HandSpy is based on the InkML standard, an XML data format for representing digital ink. This design choice shaped many of the features in HandSpy, such as the use of an XML database for managing application data and the use of XML transformations. XML transformations convert between persistent data representations used for storage and transient data representations required by the widgets on the user interface. Despite being a system independent from a specific collecting device, for the system validation, a framework for data collection was created. This framework has also been highlighted in the paper due to the important role it took in a data collection process, of a scientific project to study the cognitive processes involved in writing.
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Vilas Boas, José Luiz, Fabio Takeshi Matsunaga, Neyva Maria Lopes Romeiro, and Jacques Duílio Brancher. "Client-server architecture for pre and post-processing of real problems involving two-dimensional generalized coordinates." International Journal of Web Information Systems 11, no. 2 (June 15, 2015): 226–45. http://dx.doi.org/10.1108/ijwis-12-2014-0044.
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Purpose – The aim of this paper is to propose a Web environment for pre-processing and post-processing for 2D problems in generalized coordinate systems. Design/methodology/approach – The system consists of a Web service for client-server communication, a database for user information, simulation requests and results storage, a module of (for) calculation processing (front-end) and a graphical interface for visualization of discretized mesh (back-end). Findings – The Web system was able to model real problems and situations, where the user can describe the problem or upload a geometry file descriptor, generated from computer graphics software. The Web system, programmed for finite difference solutions, was able to generate a mesh from other complex methods, such as finite elements method, adapting it to the proposed Web system, respecting the finite difference mesh structure. Research limitations/implications – The proposed Web system is limited to solve partial differential equations by finite difference discretization. We need to study about refinement and parameters adaptations to solve partial differential equations simulated with other methods. Practical implications – The Web system includes implications for the development of a powerful real problems simulator, which is useful for computational physics researchers and engineers. The Web system uses several technologies, such as Primefaces, JavaScript, JQuery and HTML, to provide an interactive user interface. Originality/value – The main contribution of this work is the availability of a generic Web architecture for including other types of coordinate systems and to solve others partial differential equations. Moreover, this paper presents an extended version of the work presented in ICCSA 2014.
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Villordon*, Arthur, Jason Franklin, and Don LaBonte. "Using Personal Digital Assistants and Electronic Forms to Collect and Rapidly Summarize Field Data." HortScience 39, no. 4 (July 2004): 875D—875. http://dx.doi.org/10.21273/hortsci.39.4.875d.
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The use of handheld computers such as personal digital assistants (PDAs) represents a feasible method of automating the transfer of files to computers for archiving and statistical analysis. Data collected using the PDA can be transferred directly to a database program on a desktop computer, virtually eliminating errors associated with the reentry of manually collected data. These devices are highly portable and can be housed in protective cases, enabling data collection even in inclement environments. The availability of handheld database programs that permit the development of electronic forms further makes the PDA a viable data collection platform for scientific research. These database applications not only allow novice users to develop customized forms that facilitate the recording of alphanumeric data; these applications also synchronize directly with current desktop-based database and spread-sheet applications. We used Microsoft Access database tables, along with Visual CE, a PocketPC database application, to generate electronic forms for collecting data from research trials conducted in 2003. To facilitate comparison with manual data collection, we also recorded observations using “pen and paper” methods. We found no differences between both methods in the length of time required to enter observations. However, the PDA transferred the data to a computer 600% faster relative to the manual reentry method. Using the handheld computer, field data was immediately available for compilation and statistical analysis within minutes of completing the data gathering process, at the same time ensuring the integrity and continuity of the files.
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Carrasco Viera, Jesús Alejandro, and José Ignacio Cruz Moreira. "Modelado del sistema automático de descargas e implementación del módulo de descargas automáticas." Sociedad & Tecnología 2, no. 2 (January 8, 2021): 14–21. http://dx.doi.org/10.51247/st.v2i2.9.
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La presente investigación se llevó a cabo en la Universidad de Cienfuegos con el fin de diseñar un sistema informático e implementar el módulo de Descargas Automáticas para el control, seguimiento y procesamiento automático de las solicitudes de descargas hechas por parte de los usuarios de la red de dicho centro. Para el desarrollo de la aplicación informática se utilizó la arquitectura cliente-servidor y el patrón Modelo Vista Controlador; se usó Python como lenguaje de programación del lado del servidor y el framework Django. El Sistema de Gesión de Base de Datos usado fue PostgresSQL, el Proceso Unificado de Desarrollo de Software como metodología de desarrollo de software, Visual Paradigm para UML como herramienta CASE y PyCharm como Entorno de Desarrollo Integrado. El sistema desarrollado mantiene un control del flujo de información que hasta ahora ocurría de forma manual y gestiona todas las solicitudes de descargas de los usuarios. Además, el módulo de Descargas Automáticas se encarga de procesar las descargas, informar a cada usuario el estado de su descarga y a cada administrador cualquier error que ocurra al procesar las solicitudes. También elimina cada archivo descargado luego que pase un determinado tiempo en los servidores. De esta forma se logró mejorar el proceso de solicitud de descarga en todos sus aspectos. Palabras clave: descarga, sistema automático de descarga, tareas programadas. ABSTRACT This research was carried out at the University of Cienfuegos in order to design a computer system and implement the Automatic Downloads module for the automatic control, monitoring and processing of download requests made by users of the Internet. said center. For the development of the computer application, the client-server architecture and the Model View Controller pattern were used; Python was used as the server-side programming language and the Django framework. The Database Management System used was PostgresSQL, the Unified Software Development Process as a software development methodology, Visual Paradigm for UML as a CASE tool and PyCharm as an Integrated Development Environment. The developed system maintains a control of the information flow that until now occurred manually and manages all the users' download requests. In addition, the Automatic Downloads module is responsible for processing downloads, informing each user of the status of their download and each administrator of any error that occurs when processing requests. It also deletes each downloaded file after it spends a certain time on the servers. In this way, the download request process was improved in all its aspects. Keywords: download, automatic download system, scheduled tasks.
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M.S. Tg Sulaiman, T., S. B. Mohamed, M. Minhat, A. S. Mohamed, and A. R. Mohamed. "Integrated Interface Development Environment using STEP Universal Data Structure." International Journal of Engineering & Technology 7, no. 2.15 (April 6, 2018): 27. http://dx.doi.org/10.14419/ijet.v7i2.15.11194.
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Nowadays modern manufacturing demands advanced computer controller, having higher input language and less proprietary vendor dependencies. STEP stands for Standard for the Exchange of Product model data is the next generation of data model between CAD/CAM and CNC system. STEP is still under research and development all around the world. This paper describes the design, development and testing of an integrated Interface development environment for STEP file using Universal Data Structure, which aims to provide support for machining operation. The system also aims to provide function of reading and extracting the relevant information associated with the machining data and to write the G-Code file. The sample of machined block is designed from 3D CAD modeler which consisted of features need to be machined from a blank workpiece and saved in the STEP file format. The validation process will be done using the simulation in the Mach3 software.
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Korsak, Victor Vladislavovich, Alexey Vladimirovich Kravchuk, Roman Viktorovich Prokopets, Olga Nikolaevna Mityureva, and Yuri Alekseevich Shorikov. "Information support for forecasting the flooding of Left bank territories of the Saratov region." Agrarian Scientific Journal, no. 6 (June 30, 2021): 80–85. http://dx.doi.org/10.28983/asj.y2021i6pp80-85.
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The article presents the results of research on the creation of information support for predicting flooding of the territories of the Saratov Left Bank region, which includes a database of data necessary for calculations, consisting of 14 relational files, including reference books, normative files and files of source data; algorithms and computer programs forecasting. Flooding boundaries vectorization is carried out in the QGIS environment based on the exported forecast results and digital elevation model. Development and implementation of the proposed information support will provide a improvement in the quality of forecasts and will pay off in 4 years of operation.
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Kar, A. R., and O. P. Sha. "Computer-Aided Materials Management and Control for a Shipbuilding Yard." Journal of Ship Production 9, no. 04 (November 1, 1993): 254–59. http://dx.doi.org/10.5957/jsp.1993.9.4.254.
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This paper deals with the development of a computerized information system for materials management and control for shipbuilding yards. It begins by critically examining the manual and semi-manual data processing methods used in medium and small-sized shipyards and highlighting their drawbacks. Based on this and with the knowledge of the ready availability of desktop computers in small/medium-sized shipyards, a computerized materials management and control system is proposed. The schema of the proposed database system is then presented by the help of block diagrams. A number of application programs have been developed to manage, control, and update the various database files under the "Network," "Purchase," "Inventory," and "Drawing" modules. The system has been tested in a simulated production environment by entering the production, planning, materials, and drawing information of two different vessels during construction. The range of information that can be obtained and the results from the proposed system are shown briefly. It is felt that a computerized information-based materials management system has a major role to play in the smooth and profitable running of a shipyard. It is very effective in a quick appraisal of complex queries relating to materials procurement, production and drawing status, and the cause of delays.
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González-Aguilera, Diego, Susana del Pozo, Alberto Holgado, and Gemma López. "Spatial Information System for Management and Control of Electrical Substations." Advanced Materials Research 463-464 (February 2012): 1686–92. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.1686.
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This article proposes the development of a simple, flexible and portable system that will allow carrying out management, maintenance and inventory tasks in electrical substations. The Spatial Information System (SIS) permits to incorporate, through an immersive virtual environment, information about electrical substations, as well as progress in automation CAD/CAE design (Computer Aided Design/Engineering). The SIS provides an immediate knowledge of the substation spatial distribution through an interactive navigation, facilitating any type of technical question as consulting planes (sections, elevations, plants), database (files, queries) and the dimensional analysis of any object. To this end, the SIS developed can be applied to the management and complete control of a substation at the same time as a platform that encourages collaborative engineering or CAE engineering.
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Harrison, Reginald Langford, Stefan Bilbao, James Perry, and Trevor Wishart. "An Environment for Physical Modeling of Articulated Brass Instruments." Computer Music Journal 39, no. 4 (December 2015): 80–95. http://dx.doi.org/10.1162/comj_a_00332.
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This article presents a synthesis environment for physical modeling of valved brass instrument sounds. Synthesis is performed using finite-difference time-domain methods that allow for flexible simulation of time-varying systems. Users have control over the instrument configuration as well as player parameters, such as mouth pressure, lip dynamics, and valve depressions, which can be varied over the duration of a gesture. This article introduces the model used in the environment, the development of code from prototyping in MATLAB and optimization in C, and the incorporation of the executable file in the Sound Loom interface of the Composers Desktop Project. Planned additions to the environment are then discussed. The environment binaries are available to download online along with example sounds and input files.
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Cui, Huan Yong, Na Tian, Rui Chuan Li, and Xiu Hua Men. "A Method of Parametric Design of Automobile Synchronizer Ring Based on UG Secondary Development Tools." Applied Mechanics and Materials 716-717 (December 2014): 635–38. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.635.
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To realized the parametric design of automobile synchronizer ring spline tooth efficiently, a method is presented in this article, which is realized based on the UG secondary development tools. The user environment settings and the establishment of the menu file and the human-computer interaction window are introduced in detail. The programming language is written to realize the parametric design of the spline tooth of synchronous ring. Application result shows that the method simplifies the synchronous ring modeling process and improves the working efficiency.
Books on the topic "Environment and development databank (Computer file)"
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Evan, Schaffer, and Jørgensen Robert, eds. UNIX relational database management: Application development in the UNIX environment. Englewood Cliffs, N.J: Prentice Hall, 1988.
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Oracle's cooperative development environment: A reference and user's guide. Boston: Butterworth-Heinemann, 1995.
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United Nations. Dept. of Economic and Social Affairs. Population Division., ed. User's guide to the Population, resources, environment and development databank (PRED Bank, version 2.1). New York: United Nations, 1998.
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Raskin, Paul. LEAP: A description of the LDC Energy Alternatives Planning System (Energy, environment, and development in Africa). Scandinavian Institute of African Studies, 1986.
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Developing C/C++ software in the OS/2 environment. New York: Van Nostrand Reinhold, 1994.
Find full textBook chapters on the topic "Environment and development databank (Computer file)"
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Wiil, Uffe Kock. "Using the Construct Development Environment to Generate a File-Based Hypermedia Storage Service." In Lecture Notes in Computer Science, 147–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-39941-0_18.
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Belanger, France, and Dianne H. Jordan. "Multimedia Content Development." In Evaluation and Implementation of Distance Learning, 129–70. IGI Global, 2000. http://dx.doi.org/10.4018/978-1-878289-63-6.ch005.
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Instructional materials used in a traditional classroom setting can include text (books, handouts, articles), graphs, photos, films, and audio tapes. In the DL environment, these materials are digitized for delivery via a computer and/or a network. This chapter presents topics related to multimedia content development for delivery in a DL environment. First, a discussion of file and format specifications for digital multimedia content is presented; second, levels of courseware complexity are discussed; third, steps in the courseware development process are described; and fourth, commercial off-the-shelf (COTS) tools for developing multimedia instructional content and computer managed instruction (CMI) are presented.
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Massel, L. V., V. L. Arshinsky, and A. G. Massel. "Intelligent Computing on the Basis of Cognitive and Event Modeling, and Its Application in Energy Security Research." In Renewable and Alternative Energy, 780–87. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1671-2.ch024.
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The paper considers the issues of implementation and application of intelligent computing on the basis of cognitive and event modeling in research on energy security. The authors suggest a two-level information technology for the research. The first level suggests a situation analysis using the intelligent computing techniques. The analysis results are then used to choose rational variants of energy development in Russia (or its regions). At the second level these variants are computed with the multi-agent software INTEC-M. Transition from the first to the second level is automated by the tools of deductive program synthesis, that are based on declarative descriptions, i.e. formulae of restricted predicate calculus, and representation of input data by XML files. Cognitive and event modeling is considered in more detail. The examples of cognitive and event models are presented. The structure of a knowledge space is developed to support the intelligent computations. The knowledge space includes ontological models, databases of cognitive and event models, and the database on the cases of energy emergency situations. The authors developed the CogMap and EventMap tools to support cognitive and event modeling on the basis of common graphical environment GirModeling, and the expert system “Emergency”. The tools and expert system that support the knowledge base on energy emergencies are integrated within the intelligent IT environment. The research presented in the paper was partially supported by the grant of Presidium of RAS No. 2.2-2012 and grants of Russian Foundation of Basic Research No. 10-07-00264, No. 11-07-00192, No. 11-07-00245, and No. 12-07-00359.
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Favre, Liliana María. "Towards MDA Software Evolution." In Advances in Computer and Electrical Engineering, 236–40. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-649-0.ch012.
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This chapter discusses software evolution, challenges and strategic directions in the context of MDA. Various authors agreed that it is difficult to define completely software and then, software evolution. Software is certainly more that bits stored in a file, it is an abstract idea that encompasses the concepts, algorithms embodied in the implementation as well as all its associated artifacts and processes. Research seems to confirm that computer software and process software have much in common. Osterweil (2003) assures that software processes are software too. In other paper (Osterweil, 2007), he suggests analyzing the nature of software and proposes to define taxonomies for exploring characteristics and approaches to the development, verification of qualities and software evolution. The exploration of these questions is an important current of software engineering research. On the other hand, evolution is defined as a process of gradual change and development from fewer and simpler forms to higher, more complex, or better ones. In biology, evolution is related to develop over time often many generations, into forms that are better adapted to survive changes in their environment. Thus, evolution captures the notion of something improving and changes occur in species in successive generations, i.e. individuals get old and species evolve. Jazayeri (2005) analyzes the definition of software evolution. The concept of “specie” in software may be associated to meta-levels describing families (species) of software systems. These meta-levels or architectures are created as improvements to previous existing ones and describe evolved families of software systems.
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McMeel, Dermott John James, and Robert Amor. "Knitting Patterns." In Research Anthology on Recent Trends, Tools, and Implications of Computer Programming, 2055–69. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3016-0.ch093.
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Large software conglomerates like Trimble and Autodesk provide consumers with suites of software that perform many functions within the design and construction process. Communicating with software outside of the suite can be highly problematic as file types and communication protocols are proprietary and closed within that software family - the antithesis of interoperability). This is in stark contrast with emerging trends in consumer computing, where we find a rich ecosystem of devices and services facilitating a period of intense innovation. This paper documents original research that aims to implement communication beyond specific software suites and test, to what extent, wider software ecosystems revolving around open standards might be implemented within the design and construction domain. Our first test case—an agent-based dynamic simulation combining natural and built environmental components—is deployed to explore the city as a multitude of interrelated natural and built patterns. We analyze the role this simulation might play in managing the complexities of rebuilding a sustainable urban environment after the devastating earthquake in Christchurch, New Zealand. The second test case deploys an iPad application to communicate with a BIM model - exploring the development of a mobile application and methodology for openly communicating outside of the intended software family. Through these case studies we begin to identify ways to leverage emergent device and data ecosystems and representations for ‘knitting' devices and services together in innovative ways to advance design and construction processes.
Conference papers on the topic "Environment and development databank (Computer file)"
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Kim, Sun-Ho, and Yong-Mun Jeong. "Development of the STEP-to-DB Converter for the Web-Based PDM." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/cie-21227.
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Abstract STEP data exchanged for collaborative engineering is usually used in CAD systems. However, it is not used so well in PDM systems due to differences in data scope and structure. In order to resolve this inefficiency, we developed the STEP file converter which can manipulate STEP data in web-based PDM systems. The translation scope is limited to AP203. The translator consists of two modules: 1) the viewer which displays STEP data in web environments and 2) mapping editor and translator between STEP schema and PDM database schema.
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Jusic, Samir, and Lee Sai Peck. "PersistF: A Transparent Persistence Framework with Architecture Applying Design Patterns." In InSITE 2007: Informing Science + IT Education Conference. Informing Science Institute, 2007. http://dx.doi.org/10.28945/3176.
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Persistence is the term used in computer science to describe a capability to store data structures in non-volatile storage such as a file system or a relational database (Wikipedia, 2003). There is a growing need to simplify the interactions among separate systems and to build complex software systems that are made out of components with well-defined services. At the base-level of such complex systems lies a persistence framework - a set of classes tailored to save, retrieve, update and delete objects to and from their persistence stores, such as databases and flat files. This paper presents the design, and implementation of the transparent persistence framework called PersistF. Design patterns (Gamma, Helm, Johnson, & Vlissides, 1995) have been widely accepted in the software engineering community as the recommended approach to developing software. Part of the research effort of this work included the application of well-known design patterns in order to build the framework. We present how consistent application of design patterns allowed us to build a fully working persistence framework. In order to support development of modern complex applications, some recent application development environments for different programming languages are built in with some kind of persistence framework. To use these frameworks in target applications, the developer often must go through a steep learning curve as each framework is specific in some way, but namely in respect of configuring the framework’s runtime engine with enough information about the domain application. This configuration is often time consuming and error prone. Most of the existing frameworks require complicated configuration steps that are imposed onto the developer. Our aim with this work was to present a framework that will not require such complicated configuration steps and would provide its service to the target application with virtually no configuration of the framework's handling of domain classes.
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Morris, K. C. "Data Probe: A Tool for EXPRESS-Based Data." In ASME 1993 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/edm1993-0094.
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Abstract The problem of sharing data has many facets. The need to share data across multiple enterprises, different hardware platforms, different data storage paradigms and systems, and a variety of network architectures is growing. The emerging Standard for The Exchange of Product Model Data (STEP), being developed in the International Organization for Standardization (ISO), addresses this need by providing information models, called application protocols, which clearly and unambiguously describe data. The validity of these information models is essential for success in sharing data in a highly automated engineering environment. This paper describes the Data Probe: a tool for examining, editing, and managing EXPRESS-based data. The Data Probe tool supports the validation of STEP application protocols. The paper includes a description of the software architecture, the initial implementation, and plans for future enhancements. The software is designed as independent components which can be incorporated into other STEP-related systems or software requiring general purpose editing tools for structured information. The initial version of the Data Probe tool is based on two implementation mechanisms defined within STEP: the conceptual modeling language EXPRESS and the STEP exchange file format. Future work will focus on integrating a database system into the software. The software architecture and the use of object-oriented techniques enables code reusability and system extensibility and has been instrumental for a phased implementation. The software is under development at the National Institute of Standards and Technology and is in the public-domain. The software supports the Validation Testing System, part of the Application Protocol Development Environment, at the CALS-sponsored National PDES Testbed. (PDES, Product Data Exchange using STEP, is the U.S. effort in support of the international standard.)
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Wearring, Colin. "The Functional Feature Model: Bridging the CAD/CAM Gap." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/cie-1653.
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Abstract Commercial CAD systems were originally developed to support the generation of 2D engineering drawings, but evolved to support development of 3D product models. Conceptually, the product model replaces 2D engineering drawings as a means for communicating product information such as size, shape, features, datums, tolerances, and other engineering specifications. Because of their history, the software architecture and data models used by commercial CAD systems do not directly represent all the engineering product information contained in 2D engineering drawings. Computer Assisted Engineering (CAE) tools require engineering product specifications as input. When these tools are integrated directly with the CAD system, a database representation of the product model is required for their efficient operation. Without a direct link to the CAD system, information must be transferred using standard format files, or manually entered into the CAE application. To satisfy the requirements for direct integration of CAE applications with CAD systems, the Functional Feature Model (FFM) was developed. By definition, the Functional Feature Model (FFM) contains component geometry, feature definitions, datums, datum features, tolerances and other feature attributes accessed through a standard interface. The FFM was named to distinguish the functional features used by an engineer in the definition of part function, inspection, and assembly from the features employed by CAD systems in construction of geometry. Today, the FFM is used as the basis for CAE tools which perform analysis of product Geometric Dimensioning and Tolerancing (GD&T), 3D tolerance analysis of assemblies, and CMM programming. Any CAE application which requires the same or similar information as these applications can obtain its input from the FFM. The FFM is a mature, commercially proven prototype for a standard product model, containing the majority of engineering product information typically represented using 2D drawings annotated with Geometric Dimensional and Tolerancing (GD&T) symbols. The FFM can be used instead of 2D drawings to supply necessary product information to CAE applications. Using the FFM, there is no need to create the 2D engineering drawing, interpret the GD&T annotation, and enter the interpreted product information into the CAE application. It provides a standard interface (independent of CAD system) for commercial development of CAE applications, and is designed in a fashion which makes it appropriate for use as a basis for emerging product model standards. The FFM provides a prototype for related activities like the Standard for the Exchange of Product Model Data (STEP) initiative represented by the Product Data Exchange using STEP (PDES) organization in the USA. Corporate and government consortiums such as the Rapid Response Manufacturing (RRM) or Simulation Assessment Validation Environment (SAVE) initiatives could employ the FFM directly to support their objectives of developing the next generation design and simulation environment.
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Wearring, Colin. "The Functional Feature Model: Bridging the CAD/CAM Gap." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/cie-1656.
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Abstract Commercial CAD systems were originally developed to support the generation of 2D engineering drawings, but evolved to support development of 3D product models. Conceptually, the product model replaces 2D engineering drawings as a means for communicating product information such as size, shape, features, datums, tolerances, and other engineering specifications. Because of their history, the software architecture and data models used by commercial CAD systems do not directly represent all the engineering product information contained in 2D engineering drawings. Computer Assisted Engineering (CAE) tools require engineering product specifications as input. When these tools are integrated directly with the CAD system, a database representation of the product model is required for their efficient operation. Without a direct link to the CAD system, information must be transferred using standard format files, or manually entered into the CAE application. To satisfy the requirements for direct integration of CAE applications with CAD systems, the Functional Feature Model (FFM) was developed. By definition, the Functional Feature Model (FFM) contains component geometry, feature definitions, datums, datum features, tolerances and other feature attributes accessed through a standard interface. The FFM was named to distinguish the functional features used by an engineer in the definition of part function, inspection, and assembly from the features employed by CAD systems in construction of geometry. Today, the FFM is used as the basis for CAE tools which perform analysis of product Geometric Dimensioning and Tolerancing (GD&T), 3D tolerance analysis of assemblies, and CMM programming. Any CAE application which requires the same or similar information as these applications can obtain its input from the FFM. The FFM is a mature, commercially proven prototype for a standard product model, containing the majority of engineering product information typically represented using 2D drawings annotated with Geometric Dimensional and Tolerancing (GD&T) symbols. The FFM can be used instead of 2D drawings to supply necessary product information to CAE applications. Using the FFM, there is no need to create the 2D engineering drawing, interpret the GD&T annotation, and enter the interpreted product information into the CAE application. It provides a standard interface (independent of CAD system) for commercial development of CAE applications, and is designed in a fashion which makes it appropriate for use as a basis for emerging product model standards. The FFM provides a prototype for related activities like the Standard for the Exchange of Product Model Data (STEP) initiative represented by the Product Data Exchange using STEP (PDES) organization in the USA. Corporate and government consortiums such as the Rapid Response Manufacturing (RRM) or Simulation Assessment Validation Environment (SAVE) initiatives could employ the FFM directly to support their objectives of developing the next generation design and simulation environment.
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Doucet, M., L. Durand Terrasson, and J. Mouton. "Safety Criticality Standards Using the French CRISTAL Code Package: Application to the AREVA NP UO2 Fuel Fabrication Plant." In 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/icone14-89017.
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Criticality safety evaluations implement requirements to proof of sufficient sub critical margins outside of the reactor environment for example in fuel fabrication plants. Basic criticality data (i.e., criticality standards) are used in the determination of sub critical margins for all processes involving plutonium or enriched uranium. There are several criticality international standards, e.g., ARH-600, which is one the US nuclear industry relies on. The French Nuclear Safety Authority (DGSNR and its advising body IRSN) has requested AREVA NP to review the criticality standards used for the evaluation of its Low Enriched Uranium fuel fabrication plants with CRISTAL V0, the recently updated French criticality evaluation package. Criticality safety is a concern for every phase of the fabrication process including UF6 cylinder storage, UF6-UO2 conversion, powder storage, pelletizing, rod loading, assembly fabrication, and assembly transportation. Until 2003, the accepted criticality standards were based on the French CEA work performed in the late seventies with the APOLLO1 cell/assembly computer code. APOLLO1 is a spectral code, used for evaluating the basic characteristics of fuel assemblies for reactor physics applications, which has been enhanced to perform criticality safety calculations. Throughout the years, CRISTAL, starting with APOLLO1 and MORET 3 (a 3D Monte Carlo code), has been improved to account for the growth of its qualification database and for increasing user requirements. Today, CRISTAL V0 is an up-to-date computational tool incorporating a modern basic microscopic cross section set based on JEF2.2 and the comprehensive APOLLO2 and MORET 4 codes. APOLLO2 is well suited for criticality standards calculations as it includes a sophisticated self shielding approach, a Pij flux determination, and a 1D transport (Sn) process. CRISTAL V0 is the result of more than five years of development work focusing on theoretical approaches and the implementation of user-friendly graphical interfaces. Due to its comprehensive physical simulation and thanks to its broad qualification database with more than a thousand benchmark/calculation comparisons, CRISTAL V0 provides outstanding and reliable accuracy for criticality evaluations for configurations covering the entire fuel cycle (i.e. from enrichment, pellet/assembly fabrication, transportation, to fuel reprocessing). After a brief description of the calculation scheme and the physics algorithms used in this code package, results for the various fissile media encountered in a UO2 fuel fabrication plant will be detailed and discussed.
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Venkiteswaran, Adarsh, Sayed Mohammad Hejazi, Deepanjan Biswas, Jami J. Shah, and Joseph K. Davidson. "Semantic Interoperability of GD&T Data Through ISO 10303 Step AP242." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60133.
Full textAbstract:
Industries are continuously trying to improve the time to market through automation and optimization of existing product development processes. Large companies vow to save significant time and resources through seamless communication of data between design, manufacturing, supply chain and quality assurance teams. In this context, Model Based Definition/Engineering (MBD) / (MBE) has gained popularity, particularly in its effort to replace traditional engineering drawings and documentations with a unified digital product model in a multi-disciplinary environment. Widely used 3D data exchange models (STEP AP 203, 214) contains mere shape information, which does not provide much value for reuse in downstream manufacturing applications. However, the latest STEP AP 242 (ISO 10303-242) “Managed model based 3D engineering” aims to support smart manufacturing by capturing semantic Product Manufacturing Information (PMI) within the 3D model and also helping with long-term archival. As a primary, for interoperability of Geometric Dimensions & Tolerances (GD&T) through AP 242, CAx Implementor Forum has published a set of recommended practices for the implementation of a translator. In line with these recommendations, this paper discusses the implementation of an AP 203 to AP 242 translator by attaching semantic GD&T available in an in-house Constraint Tolerance Graph (CTF) file. Further, semantic GD&T data can be automatically consumed by downstream applications such as Computer Aided Process Planning (CAPP), Computer Aided Inspection (CAI), Computer Aided Tolerance Systems (CATS) and Coordinate Measuring Machines (CMM). Also, this paper will briefly touch base on the important elements that will constitute a comprehensive product data model for model-based interoperability.
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Machado, Fernanda Almeida, Paula Pontes Mota, Lorena Claudia de Souza Moreira, and Regina Coeli Ruschel. "Template class to teach clash detection." In ENCONTRO NACIONAL SOBRE O ENSINO DE BIM. Antac, 2021. http://dx.doi.org/10.46421/enebim.v3i00.315.
Full textAbstract:
BIM uses are complex specific processes in architecture, engineering, construction, and operation mediated by Building Information Modeling technologies. Several initiatives are dedicated to detailing these uses in a standardized way, enumerating and describing them in terms of scope, benefits, process maps, required competencies, associated technology, and theoretical framework. Examples of these efforts are Penn State's Computer Integrated Construction Research Program (MESSNER et al., 2019), buildingSMART (2021), and BIM Excellence Organization (SUCCAR; SALEEB; SHER, 2016). This study presents the approach to educate, evaluate and assist Model Uses using templates (Model Use Templates - MUT) of the BIM Excellence Initiative (BIMe). The BIM use is called Model Use in BIMe terminology. In three years, starting in 2021, the initiative intends to detail all the domain model uses listed by the organization (BIMe, 2020). The domain model uses are organized in the series of capture and representation, planning and design, simulation and quantification, operation and maintenance, monitoring and control of buildings and infrastructures. In terms of domain model uses, there is the linking and extending series of BIM integrated to Facility Management, interfaced with the Internet of Things, linked to Enterprise Resource Planning, etc. The initiative developed a Construction Domain Model Use Template (MUT) and applied it as a demonstration for Clash Detection or MUT 4040. This summary will describe the template, its application to Clash Detection, and guidance on how to transform it into a template class to teach Clash Detection with BIM. The MUT consists of an extended description, software list, activity flow, and bibliography. This content is available in the BIM Dictionary associated with the equivalent term (https://bimdictionary.com/en/clash-detection/1). The extended description includes the corresponding term's definition, the detailed description, purpose, and an available online media-list. The detailed description presents the different types of use (e.g., hard, soft, time-based) and benefits. The software list lists platforms and environments used in the model use development. For each platform or environment, there is a list of the vendor or developer, the corresponding technical functionality, the applicable discipline, the software description, the availability of the software in the cloud or location, differentiation of versions, the link to the official website, the model use code that the software can support, specific functionalities associated with the use and availability of a plugin or extension. The activity flow is described using a process map and details in up to 3 hierarchical levels for each macro activity. All the terminology adopted in the MUT is semantically aligned to the various projects and initiatives of BIM Excellence, bringing consistency to the meaning. In the case of MUT 4040, that is, the application of the template for the model use of Clash Detection, the short description is a “Use of the Model representing the use of 3D Models to coordinate different disciplines (e.g., structures and air-conditioning) and to identify/resolve possible conflicts between virtual elements prior to actual construction or fabrication”. The extended description presents the Clash Detection as automated or semi-automated procedures to identify design errors in 3D models, where objects occupy the same space or are too close to violating spatial restrictions. Time-based interferences are conflicts involving temporary objects that compete for the same space at the same time. The benefits are listed, for example, like better project coordination and quality; conflict reduction in the workplace; acceleration of design and delivery processes; and cost reduction through productivity increase. The available online media does not represent the entire process involved in Clash Detection and are generally restricted to confronting models on specific platforms. We advocate that the activity flow should structure the class of model uses in BIM education. In this way, there is a holistic and representative approach to practice. Thus, we advise escaping this model's understanding in a restricted and instrumental way, as it already occurs in most of the online media found. We propose to organize the class program by the macro stages of the activity flow, covering: (i) creation of the strategy for the clash detection in the project in question; (ii) preparation of specific models for federation; (iii) identification of federation environments or model integration; (iv) federation or integration of models; (v) checks for interference in the federated or integrated model; (vi) analysis of the conflicts identified; and (vii) referral to conflict resolution. The details of each of these activities in the template can guide the teacher on how to proceed or prepare educational content. The bibliography listed in the template covers the theoretical framework to support the class in terms of books, scientific articles, and BIM guides. One can develop the class at the level of graduation, extension, or continuing education. Being an undergraduate class, it can be mandatory or elective. Items (i) to (iii) make up the theoretical part of the class, and the rest are essentially practical content. Thus, two types of competency assessment are possible: knowledge and skills. Knowledge can be developed through discussions and seminars. Skills covered are associated with execution or domain skills, according to Succar, Scher, and Willams (2013). Execution skills are associated with learning model verification platforms and collaboration environments. The execution competence generates an instrumental skill that can be provided through individual online training with tutorials. Domain skills are essentially technical (analysis and simulation) and functional (collaboration). These skills must be instigated in a participatory and collaborative way in practical exercises involving cycles of verification of the federated model and adjustments of complementary projects' models. As a suggestion for support material, the teacher should prepare a dataset including models with errors in file naming disobeying conventions, errors in the control elements impacting the overlapping of models, errors of omission or duplication of elements in the models, and errors of data schema in terms of categorization of elements and classification of content. The models must also include issues of all types (hard, soft, and temporal interferences). Errors must be plausible to be identified by different types of verification: visual or script. YouTube presentation: https://youtu.be/cMPaw_kOZtQ