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Displaying 151 - 175 of 189

An Ontology for Assembly Representation

July 1, 2007
Author(s)
Xenia Fiorentini, Iacopo Gambino, V.C. Liang, Sebti Foufou, Sudarsan Rachuri, Mahesh Mani, Conrad E. Bock
Mechanical assemblies are systems composed of modules that are either subassemblies or parts. Traditionally an assembly information model contains information regarding parts, their relationships, and its form. But it is important that the model also

Representation of Heterogeneous Material Properties in the Core Product Model

June 1, 2006
Author(s)
Arpan Biswas, Steven J. Fenves, V Shapiro, Ram D. Sriram
The Core Product Model (CPM) was developed at NIST as a high level abstraction for representing product related information, to support data exchange, in a distributive and a collaborative environment. In this paper, we extend the CPM to components with

SysML and UML 2 Support for Activity Modeling

June 1, 2005
Author(s)
Conrad E. Bock
This article describes activity modeling as specified by the Systems Modeling Language (SysML) and the finalization of the Unified Modeling Language version 2 (UML 2). It reviews and updates an earlier proposed alignment between Enhanced Functional Flow

PSL: A Semantic Domain for Flow Models

May 1, 2005
Author(s)
Conrad Bock, Michael Gruninger
Flow models underlie popular programming languages and many graphical behavior specification tools. However, their semantics is typically ambiguous, causing miscommunication between modelers and unexpected implementation results. This article introduces a

Systems Engineering in the Product Lifecycle

May 1, 2005
Author(s)
Conrad E. Bock
This article introduces basic elements of systems engineering that are useful in managing the product lifecycle, as expressed in an extension to the Unified Modeling Language. Models are described for product requirements in textual and computable form

Workflow Automation in a B2B Web-Portal Testbed

February 10, 2004
Author(s)
Marjane Mabrouk, Frederic J. de Vaulx, Tom Rhodes
The work described in this report, focused on specifying and managing different steps of a Business-to-Business (B2B) workflow by developing and integrating a Workflow Management System (WMS) within the NIST B2B Web-portal. This allows us to manage the

UML Without Pictures

August 1, 2003
Author(s)
Conrad E. Bock
This article reviews the primary concepts of repository-centered development with the Unified Modeling Language, explaining the relation between notation, semantics, and model compilation. It highlights UML's approach to semantics, and flexibility in

Initial Graphics Exchange Specification Volume 2: Application Protocols

May 12, 2003
Author(s)
Curtis H. Parks
This document brings together the fundamental contents of application protocols (AP) developed by the Initial Graphics Exchange Specification (IGES) Organization and approved as American National Standards (ANS) by the IGES Product Data Exchange using STEP

Internet Commerce for Manufacturing Data Staging

November 1, 2000
Author(s)
Curtis H. Parks, Jim G. Nell
This paper describes the process-flow model as proposed for use in the Internet Commerce for manufacturing (ICM), a project of the National Advanced Manufacturing Test Bed program. This model will be used to identify those internet-facilitated transactions

Information Technology for Engineering and Manufacturing

May 10, 2000
Author(s)
Michael Gruninger, Barbara L. Goldstein, Kevin G. Brady, Simon Szykman, Charles R. McLean, Joshua Lubell
Advances in information technology are frequently cited as the basis for the continued growth of the U.S. economy. Manufacturers use information technology products to increase productivity, to decrease time-to-market, to lower supply chain costs, and to

Internet Commerce for Manufacturing Activity Model

May 1, 2000
Author(s)
Edward J. Barkmeyer Jr., Jim G. Nell, Curtis H. Parks
This paper describes the activity model as proposed for use in the Internet Commerce for Manufacturing (ICM), a National Advanced Manufacturing Testbed (NAMT) project. A model was selected from several projects involved in the printed wiring assembly

An Information System to Support Calibration

November 1, 1999
Author(s)
Kevin G. Brady
The National Institute of Standards and Technology (NIST) performs calibrations that achieve the highest level of measurement quality for the makers and users of precision devices world-wide. The information system that administers these calibrations

A Conceptual Data Model of Datum Systems

September 23, 1999
Author(s)
Michael R. McCaleb
A new conceptual data model that addresses the geometric dimensioning and tolerancing concepts of datum systems, datums, datum features, datum targets, and the relationship among these concepts, is presented. Additionally, a portion of a related data model

Opening Up to Standardization

June 1, 1999
Author(s)
Barbara L. Goldstein, J. Cartwright
Today's electronics manufacturers are expected to reduce their time-to-market cycles and lower total costs simultaneously. Product development cycles and volume ramp-up times are rapid, and corresponding end-of-life production is dramatic. This environment

Internet Commerce for Manufacturing Product Data

April 1, 1999
Author(s)
Curtis H. Parks
Printed circuit assemblies (PCA) typically are designed on computer aided design (CAD) systems, checked, then released for manufacture. The released design description typically consists of a top assembly drawing and a series of data files which are used

Design and Development of a Dictionary Translator

January 1, 1999
Author(s)
John V. Messina, James A. St Pierre, Michael R. McCaleb
The lack of a traceable set of terminologies to describe electronic components has long been identified by the electronic industry as a significant problem. As part of its Electronic Commerce of Component Information (ECCI) project, NIST's Electronic

Virtual Factory Project Tackles Integration of Supply Chain Systems

January 1, 1999
Author(s)
J. Cartwright, J. Friedman, J. Minchella, Barbara L. Goldstein
The unifaction of robust enabling technologies of the Internet and ubiquitous access is resulting in market dynamics that change the way business is being conducted by electronic manufacturing services (EMS) providers. OEM/EMS enterprise relationships are

GenCAM Syntax Checker

October 1, 1998
Author(s)
Michael McLay
A conformance test module (CTM) for the GenCAM file format is being developed by National Institute of Standards and Technology to support an industry effort to develop the GenCAM standard. GenCAM is a product data exchange standard for information used in
Displaying 151 - 175 of 189