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Displaying 45726 - 45750 of 73929

NIST Multizone Modeling Website

April 2, 2001
Author(s)
William S. Dols
This report presents an overview of the NIST Multizone Modeling Website developed by the Building and Fire Research Laboratory of the National Institute of Standards and Technology (NIST). Multizone modeling refers to the calculation of airflows, pressure

A Genetic Programming Ecosystem

April 1, 2001
Author(s)
J E. Devaney, John G. Hagedorn, O P. Nicolas, G Garg, A Samson, Martial Michel
Algorithms are needed in every aspect of parallel computing. Genetic Programmingis an evolutionary technique for automating the design of algorithms throughiterative steps of mutation and crossover operations on an initial population of randomly generated

A High-Speed Thermal Imaging System for Semiconductor Device Analysis

April 1, 2001
Author(s)
Allen R. Hefner Jr., David W. Berning, David L. Blackburn, Christophe C. Chapuy, Sebastien Bouche
A new high-speed transient thermal imaging system is presented that provides the capability to measure the transient temperature distributions on the surface of a silicon chip with 1 υs time, and 15 υm spatial resolution. The system uses virtual instrument

A Manufacturing Collaboratory Case Study - Companion Document

April 1, 2001
Author(s)
E E. Wierba, Amy Knutilla, Michelle P. Steves
This report summarizes a case study of a collaborative tool intervention within a geographically-distributed, product-development team of an automotive parts supplier. This report serves as a companion document to a larger, more detailed volume, prepared

A New Critical Review of Experimental Stark Widths and Shifts

April 1, 2001
Author(s)
N Konjevic, A Lesage, Jeffrey R. Fuhr, Wolfgang L. Wiese
We have undertaken, and almost completed, a new critical review of experimental data on Stark widths and shifts for spectral lines of non-hydrogenic neutral atoms and positive ions. This review covers the period from 1989 through the end of 1999 and

Absolute Molecular Orientational Distribution of the Polystyrene Surface

April 1, 2001
Author(s)
Kimberly A. Briggman, John C. Stephenson, William E. Wallace, Lee J. Richter
Vibrationally-resonant sum frequency generation (VR-SFG) has been used to study the absolute molecular orientational distribution of the pendant phenyl groups at the free surface of polystyrene (PS) thin films on oxidized Si substrates. Characterization of

Acquiring, Analyzing, and Using Complete Three-Dimensional Aggregate Shape Information

April 1, 2001
Author(s)
Edward J. Garboczi, Nicos Martys, H A. Saleh, Richard A. Livingston
The shape of aggregates, from whatever source, plays a crucial role in determining the properties of the composite material in which they are embedded (e.g., asphaltic or portland cement concrete). To properly characterize this three-dimensional shape

Adaptive Grid Refinement and Multigrid on Cluster Computers

April 1, 2001
Author(s)
William F. Mitchell
It has been shown that the combination of adaptive grid refinement and multigrid solution, known as adaptive multilevel methods, provide effective methods for solving partial differential equations on sequential computers. Recently, research has been

An International Comparison of 50/60 Hz Power (1996-1999)

April 1, 2001
Author(s)
Nile M. Oldham, Thomas L. Nelson, R. Bergeest, G. Ramm, R. Carranza, A. C. Corney, M. Gibbes, Gregory Kyriazis, H. Laiz, L. X. Liu, Z. Lu, U. Pogliano, K. E. Rydler, E. Shapiro, E. So, M. Temba, P. Wright
An international comparison of 50/60 Hz power is described. The traveling standard was an electronic power transducer which was tested at 120 volts, 5 amperes, 53 hertz, at five power factors (1.0, 0.5 lead, 0.5 lag, 0.0 lead, and 0.0 lag). Fifteen

Analysis of a Dual-Balance HIgh Resistance Bridge at 10 T{O}

April 1, 2001
Author(s)
Dean G. Jarrett
The NIST guarded active-arm bridge, using a third dc source and a second detector to balance the guard network, is described. Improvements to the NIST active-arm bridge and the design and construction of improved high resistance standards have facilitated

Analysis of Broadband X-Ray Spectra of Highly Charged Krypton From a Microcalorimeter Detector of an Electron-Beam Ion Trap

April 1, 2001
Author(s)
I Kink, J M. Laming, E Takacs, James V. Porto, John D. Gillaspy, E Silver, H. Schnopper, Simon R. Bandler, M Barbera, N Brickhouse, S Murray, N. Madden, D Landis, J. Beeman, E. E. Haller
Spectra of highly charged Kr ions, produced in an EBIT, have been recorded in a broad x-ray energy band (0.3-4 keV) with a microcalorimeter detector. Most of the spectral lines have been identified as transitions of B- to Al-like Kr. The transition

Antenna System Guide

April 1, 2001
Author(s)
W. A. Kissick, W J. Ingram, J M. Vanderau, R D. Jennings, Sharon E. Ellison
Radio communications are essential to the operations of Federal, State, and local law enforcement and correction agencies. Effective and reliable communications systems not only enable personnel to perform their functions efficiently, but also help ensure

BLCC 5.0-01.

April 1, 2001
Author(s)
S Fuller, A S. Boyles
The BLCC5 Building Life-Cycle Cost Program provides economic analysis of projects for which both initial capital costs and future operational costs need to be considered. The program is useful for evaluating the long-term costs and savings of energy and
Displaying 45726 - 45750 of 73929
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