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Displaying 46751 - 46775 of 73461

Information Model for Machine Tool Performance Tests

November 1, 2000
Author(s)
Yung-Tsun T. Lee, M A. Donmez, Johannes A. Soons
This report specifies an information model of machine tool performance evaluation tests. The information model provides a mechanism capable of describing the properties and results of machine tool performance tests. The objective of the information model

Information Modeling on Conceptual Design Integrated with Process Planning

November 1, 2000
Author(s)
Ram D. Sriram, Mike Pratt, Shaw C. Feng, Eugene Song
Information modeling is critical to the integration of conceptual design and process planning. An information model for conceptual design is provided in this paper. Conceptual design is a key activity in early product development. It determines product

International Comparison, Final Summary Report

November 1, 2000
Author(s)
James P. Randa
An international comparison of noise temperature of coaxial (GPC-7) sources at 2 GHz, 4 GHz and 12 GHz has been completed. Participating laboratories included the Physikalisch-Technische Bundesanstalt (PTB); the Bureau National de Metrologie-Laboratoire

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

Introduction to ISO 10303 - The STEP Standard for Product Data Exchange

November 1, 2000
Author(s)
Mike Pratt
Since 1984 the International Organization for Standardization (ISO) has been working on the development of a comprehensive standard for the electronic exchange of product data between computer-based product life-cycle systems. Initial concentration has

LINDENS: A program for lineament length and density analysis

November 1, 2000
Author(s)
Antonio M. Casas, Angel Cortes, Adolfo Maestro, M. Asuncion Soriano, Andres Riaguas, Javier Bernal
Analysis of lineaments from satellite images normally includes the determination of their orientation and density. The spatial variation in the orientation and/or number of lineaments must be obtained by means of a network of cells, the lineaments included

MatML: XML for Materials Property Data

November 1, 2000
Author(s)
E F. Begley, C P. Sturrock
This paper will provide a high level overview of MatML, an extensible markup language (XML) for materials property data. MatML is being developed in order to address the problems of interpretation and interoperability that arise when these data are

Measures for Spectral Quality in Low-Voltage X-Ray Microanalysis

November 1, 2000
Author(s)
Dale E. Newbury
Characteristic x-ray production with energetic electrons depends strongly on the overvoltage, the ratio of the incident beam energy to the critical excitation energy for the atomic species of interest. Low voltage x-ray microanalysis (beam energy < 5 keV)

Microcalorimeter Energy Dispersive X-ray Spectrometer for Low Voltage Microanalysis

November 1, 2000
Author(s)
David A. Wollman, John M. Martinis, Sae Woo Nam, Gene C. Hilton, Kent D. Irwin, David A. Rudman, Norman F. Bergren, Steven Deiker, Martin Huber, Dale Newbury
Improved x-ray detector technology continues to be a critical metrological need in the semiconductor industry for contaminant particle analysis 1,2 and for high-spatial-resolution x-ray microanalysis using low-beam-voltage field-emission scanning electron

Modification of the Phase Stability of Polymer Blends by Fillers

November 1, 2000
Author(s)
Alamgir Karim, D W. Liu, Jack F. Douglas, A Nakatani, Eric J. Amis
We investigate the influence of surface modified filler particles on the phase stability of a model blend of polystyrene (PS) and polybutadiene (PB). The upper critical solution cloud point curve of PS/PB is destabilized (upward shift of critical
Displaying 46751 - 46775 of 73461
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