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Search Publications

NIST Authors in Bold

Displaying 49476 - 49500 of 73697

Standards Classification Strategy and Methodology

October 1, 1999
Author(s)
Neil Christopher, Jim G. Nell
This document describes a research project to recommend a decision tool that the Manufacturing Systems Integration Division (MSID) could use during its strategic-planning process to evaluate which standards activities to support. This paper describes how

Statistics of Shear-Induced Rearrangements in a Two-Dimensional Model Foam

October 1, 1999
Author(s)
S Tewari, D Schiemann, D J. Durian, C M. Knobler, Stephen A. Langer, A J. Liu
Under steady shear, a foam relaxes stress through intermittent rearrangements of bubbles accompanied by sudden drops in the stored elastic energy. We use a simple model of foam that incorporates both elasticity and dissipation to study the statistics of

STEP: The Grand Experience

October 1, 1999
Author(s)
Sharon J. Kemmerer
This is a definitive work on the technical and administrative work dedicated to developing a product data exchange standard (ISO 10303, commonoly known as STEP -- Standard for the Exchange of Product model data). Although the text focuses on the role of

The Effect of Thermal Shock on the Thermal Conductivity of a Functionally Graded Material

October 1, 1999
Author(s)
Andrew J. Slifka, M Packer, A Kumakawa, Bernard J. Filla, J M. Phelps, N Shimoda
We have measured the thermal conductivity of a ni20Cr / 8% yttria-partially-stabilized-zirconia functionally graded 1.1 mm thick coating on a substrate of 403 stainless steel. We measured thermal conductivity of the as-received coated specimen, then

The Fifth SeaWiFS Intercalibration Round-Robin Experiment (SIRREX-S), July 1996

October 1, 1999
Author(s)
Bettye C. Johnson, Howard W. Yoon, Sally S. Bruce, Ping-Shine Shaw, E A. Thompson, S B. Hooker, R Barnes, R Eplee, S Maritorena, J Mueller
This report documents the fifth Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Intercalibration Round-Robin experiment (SIRREX-5), which was held at the National Institute of Standards and Technology (NIST) on 23 July to 30 July 1996. The agenda for

The Structure and Ground State Dynamics of Ar-IH

October 1, 1999
Author(s)
A McIntosh, Z Wang, J Castillo-Chara, R R. Lucchese, J W. Bevan, R D. Suenram, A C. Legon
The structure and ground state dynamics of the atom-diatom dimer interaction between Ar and HI has been investigated by microwave and near infrared supersonic jet spectroscopy. Ab initio molecular orbital calculations were used to provide greater insight

Thermodynamic Properties of Air from 60 to 2000 K at Pressures up to 2000 Mpa

October 1, 1999
Author(s)
M D. Panasiti, Eric Lemmon, S G. Penoncello, R. T. Jacobsen, Daniel G. Friend
A thermodynamic property formulation for standard dry air based upon experimental P-p-T, heat capactiy, and speed of sound data and predicted values, which extends the range of prior formulations to higher pressures and temperatures, is presented.

Toward a 2-eV Microcalorimeter X-ray Spectrometer for Constellation-X

October 1, 1999
Author(s)
C. K. Stahle, Simon R. Bandler, T W. Barbee, J. Beeman, R.P. Brekosky, B. Cabrera, M. Cunningham, Steven Deiker, Enectali Figueroa-Feliciano, F. M. Finkbeiner, G R. Frank, K. C. Gendreau, E. E. Haller, Gene C. Hilton, Kent D. Irwin, R. L. Kelley, S. E. Labov, M. J. Li, N. Madden, John M. Martinis, D. McCammon, Sae Woo Nam, F. S. Porter, H. Schnopper, E. H. Silver, A. E. Szymkowiak, G. S. Tucker, A. Walker, David A. Wollman
Constellation-X is a cluster of identical observatories that together constitute a promising concept for a next-generation, high-throughput, high-resolution, astrophysical x-ray spectroscopy mission. The heart of the Constellation-X mission concept is a

Ultrasensitive Surface Spectroscopy With a Miniature Optical Resonator

October 1, 1999
Author(s)
A C. Pipino
The number density and orientation of molecules at a surface can be probed with extremely high sensitivity by employing a miniature total-internal-reflection-ring cavity in a novel realization of the cavity ring-down optical absorption technique. The modes

Variation in Optical Disc Retardance Measurements

October 1, 1999
Author(s)
Kent B. Rochford, S. T. Kreger, John W. West
An intercomparison of optical disc birefringence measurements using commercial instrumentation found in manufacturing settings showed significant measurement variation. We discuss possible sources of variantion in these measurements, including changes in

Video Surveillance Equipment Selection and Application Guide

October 1, 1999
Author(s)
A G. Lieberman, D J. Atkinson, V J. Pietrasiewicz, K E. Junker
The guide begins with a discussion of typical video surveillance assignments, that is, a definition of user requirements for the law enforcement and corrections communities. This requirements definition serves as a jumping-off point and reference base for

XPS Study of the Dehydration of Clay and Kaolin Powders

October 1, 1999
Author(s)
T N. Wittberg, P S. Wang
X-ray photoelectron spectroscopy (XPS) was used to analyze samples of a commercial clay powder and a kaolin standard. Samples were analyzed both in the as-received condition and after heating to temperatures > or = to} 750 degrees C. There was a loss of

A Welding Cell That Supports Remote Collaboration

September 30, 1999
Author(s)
James D. Gilsinn, William G. Rippey, Joseph A. Falco, Timothy P. Quinn, Robert Russell, Keith A. Stouffer
Discrete part manufacturers using robotic arc welding cells often have several more geographically distributed plants than welding experts. This ratio often leads to costly downtimes due to both logistic and communication deficiencies between weld
Displaying 49476 - 49500 of 73697
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