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Displaying 61901 - 61925 of 74237

NIST Express Working Form Programmer

April 1, 1990
Author(s)
Steve Clark
The Product Data Exchange Specification (PDES) is an emerging standard for the exchange of product information among various manufacturing applications. PDES includes an information model written in the Express language; other PDES-related information

QDES User

April 1, 1990
Author(s)
Steve Clark
QDES, the Quick-and-Dirty Editor for STEP, is intended to provide a temporary facility for adding tolerancing and other data to a PDES geometric model. The expectation is that a solid modeler will be used to product a STEP physical file. This file can then

Testbed Development Plan: Validation and Testing System Development

April 1, 1990
Author(s)
Mary Mitchell
This document describes a plan to construct validation software tools which will be used to ensure the quality of STEP. The Validation Testing System is an integral part of an overall project to establish the National PDES Testbed at the National Institute

Role of R22 in Refrigerating and Air Conditioning Equipment

March 19, 1990
Author(s)
David Didion, R. Cohen, D. R. Tree
The U. S. Environmental Protection Agency has recently performed an analysis that shows the need for nearly 100% worldwide-acceptance of total CFC phase out. The adoption of HFCs (for example R134a) and HCFCs (for example R123 and R22) alternatives, at

Development Plan: Product Data Exchange Network

March 1, 1990
Author(s)
Simon P. Frechette, Kevin K. Jurrens
This document describes a plan to develop a product data exchange network to serve the needs of both international and national PDES/STEP efforts. The Product Data Exchange Network will be an integral part of the National PDES Testbed which was established
Displaying 61901 - 61925 of 74237
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