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Displaying 41726 - 41750 of 74090

2003 Weights and Measures Directory

February 1, 2003
Author(s)
L T. Sebring
This directory is a listing of weights and measures officials in the U.S. and its territories. It includes each official's agency, title, address, phone, fax, e-mail, and some URL addresses.

A Double-Primary Dead-Weight Tester for Pressures (35-175) kPa in Gage Mode

February 1, 2003
Author(s)
K. Jain, Y Q. Cen, Walter J. Bowers Jr., James W. Schmidt
Primary pressure standards in the atmospheric pressure range are often established using mercury manometers. Less frequently, controlled-clearance dead-weight testers in which one component (normally the piston) has been dimensionally measured have also

A Study on the Variance Estimation for a Stationary Process in SPC

February 1, 2003
Author(s)
Nien F. Zhang
Recently, statistical process control (SPC) methodologies have been developed to accommodate autocorrelated data. To construct control charts for stationary process data, the process variance needs to be estimated. For an independently identically

A SURF Beamline for Synchrotron Source-Based Absolute Radiometry

February 1, 2003
Author(s)
Ping-Shine Shaw, Uwe Arp, Howard W. Yoon, Robert D. Saunders, Albert C. Parr, Keith R. Lykke
A new source-based radiometry beamline at Synchrotron Ultraviolet Radiation Facility (SURF III) was constructed recently. The goal of this beamline is to establish a national source standard with wide spectral range from far UVto IR by using the

Accurate spectral characterization of polarization-dependent loss

February 1, 2003
Author(s)
Rex M. Craig
Building on previous work, a rapid, automated, non-mechanical measurement system for spectral characterization of polarization-dependent loss (PDL) has been developed. A deterministic fixed-states Mueller/Stokes method in conjunction with real-time

Agglomerate Formation During Drying

February 1, 2003
Author(s)
A Vertanessian, Andrew J. Allen, M J. Mayo
The evolution of agglomerate structure during drying of particles from suspension has been studied for a nanocrystalline Y2O3 (8 mol %)-stabilized ZrO2 powder. Agglomerates in drying and dried suspensions were examined at the smallest size scales (100 nm

Algorithms and Codes for the Macdonald Function: Recent Progress and Comparisons

February 1, 2003
Author(s)
B R. Fabijonas, Daniel W. Lozier, J M. Rappoport
The modified Bessel function K iŅχ, also known as the Macdonald function, finds application in the Kontorovich-Lebedev integral transform when χ and Ņ are real and positive. In this paper, a comparison of three codes for computing this function is made

An Investigation of Particle Dynamics in a Rotating Disk Chemical Vapor Deposition Reactor

February 1, 2003
Author(s)
D M. Kremer, R W. Davis, Elizabeth F. Moore, James E. Maslar, Donald R. Burgess Jr., S H. Ehrman
This paper describes a numerical model for the nucleation, growth and transport of gas phase particles formed during the chemical vapor deposition (CVD) of epitaxial silicon from silane. This model has been constructed for use with the Sandia SPIN code

Analysis of the N 2 , N 4 Infrared Hot Bands and N 1 CARS Spectrum of 34 S 16 O 3

February 1, 2003
Author(s)
J Barber, E T. Chrysostom, Tony Masiello, J Nibler, A G. Maki, A Weber, Thomas A. Blake, R L. Sams
High-resolution (0.0015 cm -1) infrared spectroscopy has been used to study the 34S 16O 3 IR-active hot bands originating from the Ņ 2 and Ņ 4 bending mode levels and terminating in the states 2Ņ 2 (I = 0), Ņ 2 + Ņ 4 (I = 1), and 2Ņ 4 (I = 0, 2). The upper

ASET-B: Comparison of Model Predictions With Full-Scale Test Data.

February 1, 2003
Author(s)
M J. Hurley
The proper use of computer fire models requies an understanding of their applicability and limitations, since all computer models are, at least to a certain extent, empirically based. Equations or constants used within computer models are frequently based

Calibrated Waveform Measurement with High-Impedance Probes

February 1, 2003
Author(s)
Pavel Kabos, Howard C. Reader, Uwe Arz, Dylan Williams
We develop an on-wafer waveform calibration technique that combines frequency-domain mismatch corrections to account for the effects of the probe on the measurement with an oscilloscope calibration. The mismatch correction is general and can be applied to

Characterization of Chemical-Vapor-Deposited Low-K Thin Films Using X-Ray Porosimetry

February 1, 2003
Author(s)
V. J. Lee, Eric K. Lin, Barry J. Bauer, Wen-Li Wu, B K. Hwang, W D. Gray
Trimethylsilane based carbon doped silica films prepared with varying chemical vapor deposition process conditions were characterized using x-ray reflectivity and porosimetry to measure the film thickness, average film density, density depth profile, wall

Characterizing Positive Pressure Ventilation Using Computational Fluid Dynamics

February 1, 2003
Author(s)
Stephen Kerber, William D. Walton
Data from two different sets of full-scale experiments are compared with simulations completed with computational fluid dynamic model, the Fire Dynamic Simulator (FDS). The full-scale experiments characterize a Positive Pressure Ventilation (PPV) fan in an

Compositional Homogeneity of Ferroelectric (Pb,La)(Ti,Zr)O- 3 Thick Films

February 1, 2003
Author(s)
S Bernik, Ryna B. Marinenko, J Holc, Z Samardzija, M Ceh, M Kosec
Quantified WDS x-ray element maps were used to characterize active PLZT layers on Pt/PLZT/Al 2O 3 substrates, one fired at 1050 C and the other at 1150 C. In the layer fired at 1050 C randomly distributed micrometer size compositional irregularities were

Computerized Fire Simulations For Use In Fatal Fire Investigations

February 1, 2003
Author(s)
Daniel M. Madrzykowski
Learning Objective: To develop a conceptual understanding of fire modeling, model capabilities and the application of fire models to investigations.In conjunction with the National Institute for Occupational Safety and Health (NIOSH), the National

Concepts for Automating Systems Integration

February 1, 2003
Author(s)
Edward J. Barkmeyer Jr., Allison Barnard Feeney, Peter O. Denno, David W. Flater, Donald E. Libes, Michelle P. Steves, Evan K. Wallace
The problem of software systems integration getting independently developed software components to communicate in order to support a business application has been altered by the introduction of new software technologies, but by no means eliminated. NIST
Displaying 41726 - 41750 of 74090
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