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NIST Authors in Bold

Displaying 48976 - 49000 of 73697

X-ray Scattering and Fluorescence From Atoms and Molecules

January 1, 2000
Author(s)
S H. Southworth, L Young, E P. Kanter, Thomas W. LeBrun
Fundamental understanding of x-ray interactions with atoms and molecules provides a basis for applying x-ray methods to complex materials, such as structural determinations by x-ray diffraction and extended x-ray absorption fine structure. Compton

Coplanar Transmission Lines with Meandering Center Conductors in Y-Ba-Cu-O/Au Bilayers

December 31, 1999
Author(s)
C Weber, Ronald H. Ono, James Booth, Leila R. Vale, Samuel Benz, A. M. Klushin, H. Kohlstedt, C. Buchal, R. Semerad
We have investigated both conventional and meandering coplanar microwave transmission lines patterned in Y-Ba-Cu-O/Au bilayers on yttria-stablized zirconia and sapphire substrates. Within the meandering waveguides, the gentre conductor was deformed from a

Far-Infrared Transmittance and Reflectance of YBa 2 Cu 3 O 7-x Films on Si Substrates

December 31, 1999
Author(s)
A. R. Kumar, Nien F. Zhang, V. A. Boychev, D. B. Tanner, Leila R. Vale, David A. Rudman
The transmittance and reflectance of superconductive YBa 2Cu 3O 7-γ (YBCO) thin films deposited on Si substrates have been measured in the far-infrared frequency region from 10 to 100 cmu-1^ (wavelength from 1000 to 100 micro υ) at temperatures between 10

First Astronomical Application of a Cryogenic Transition Edge Sensor Spectrophotometer

December 31, 1999
Author(s)
R. W. Romani, Aaron J. Miller, B. Cabrera, Enectali Figueroa-Feliciano, Sae Woo Nam
We report on the first astronomical observations with a photon-counting pixel detector that provides arrival time ((delta)R, less then or equal to} 0.15 eV) resolved measurements from the near-IR through the near UV. Our test Observations were performed by

Large-Area YBa 2 Cu 3 O 7-x Bolometers on Si Substrates

December 31, 1999
Author(s)
Leila R. Vale, Ronald H. Ono, Donald G. McDonald, Robert J. Phelan
We have developed YBa 2Cu 3O 7-x (YBCO) thermometers for large-area (4 mm x 4 mm) electrical substitution bolometers. We passivated the YBCO with a thin Au layer and demonstrated a noise equivalent temperature of 4 nK Hz -1/2. We then used a resistor layer

Mg/GaAs(001): A Highly Anisotropic Reaction Morphology

December 31, 1999
Author(s)
Steven W. Robey
The spontaneous growth of one-dimensional structures during reaction of Mg on GaAs(001) 4x2 Ga-stabilized surface was observed by in situ electron diffraction and ex situ atomic force microscopy (AFM). Reaction led to growth of an epitaxial, cubic phase

The NIST 1999 Speaker Recognition Evaluation - An Overview

December 31, 1999
Author(s)
Alvin F. Martin, Mark A. Przybocki
This article summarizes the 1999 NIST Speaker Recognition Evaluation. It discusses the overall research objectives, the three task definitions, the development and evaluation data sets, the specified performance measures and their manner of presentation

SIMnet Design and Internet Deployment Guide

December 29, 1999
Author(s)
Richard D. Schneeman
Combining the power of the Internet with state-of-the-art newly emerging international multimedia standards from the International Telecommunications Union (ITU) provides a platform on which to build a next-generation, real-time collaborative metrology

NIST 60. NIST ITS-90 Thermocouple Database

December 21, 1999
Author(s)
Dean C. Ripple
This database fully reproduces the tables of NIST Monograph 175, Temperature-Electromotive ForceReference Functions and Tables for the Letter-Designated Thermocouple Types Based on the ITS-90, by Burns, Scroger, Strouse, Croarkin, and Guthrie.These

Buffer Management and Priority Scheduling for ATM Traffic Shaping

December 20, 1999
Author(s)
F Duran, T Lizambri, S A. Wakid
The impact of buffer management and priority scheduling is examined in worst case scenarios when the aggregate incoming traffic is higher than the output link capacity of an ATM traffic shaper. To simultaneously reduce cell loss and extreme delay behavior

Ordering/Displacive Phase Transformations in Ca 4 Nb 2 O 9

December 17, 1999
Author(s)
Igor Levin, Leonid A. Bendersky, Robert S. Roth, Terrell A. Vanderah
Four Ca 4Nb 2O 9=Ca(Ca1/3Nb 2/3)O 3 polymorphs based on ABO 3 perovskite-like structure were identified. These polymorphs feature three different arrangements of Ca/Nb cations on B-sites of perovskite. In three of the polymorphs, cation ordering is

A Resource Access Decision Service for CORBA-Based Distributed Systems

December 9, 1999
Author(s)
Konstantin Beznosov, Yi Deng, Bob Blakley, Carol Burt, John Barkley
Decoupling authorization logic from application logic allows applications with fine-grain access control requirements to be independent from a particular access control policy and from factors that are used in authorization decisions as well as access
Displaying 48976 - 49000 of 73697
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