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NIST Authors in Bold

Displaying 37076 - 37100 of 73929

NIST Optoelectronic Measurements for Fiber Optic Applications

March 1, 2005
Author(s)
Kent B. Rochford, Paul D. Hale, Nathan R. Newbury
We describe current measurement capabilities as well as research focused on two areas: improving temporal and frequency response characterization of detectors and instrumentation using electro-optic sampling, and improving wavelength metrology using

Ontology-based Exchange of Product Data Semantics

March 1, 2005
Author(s)
Lalit Patil, D Dutta, Ram D. Sriram
An increasing trend toward product development in a collaborative environment has resulted in the use of various software tools to enhance the product design. This requires a meaningful representation and exchange of product data semantics across different

Optimized Arbitrary Wireless Device Arrays for Emergency Response Communications

March 1, 2005
Author(s)
William F. Young, Edward Kuester, Christopher L. Holloway
Wireless communications are essential to emergency responders. Unfortunately, a typical emergency response scenario involves communication into and within structures, which severely interfere with or completely block the radio frequency channel. In this

Photoreflectance Study of the Electronic Structure of Si-Doped InyGa 1-y As 1-x N x Films With x 0.012

March 1, 2005
Author(s)
Youn S. Kang, Lawrence H. Robins, Anthony Birdwell, Alexander J. Shapiro, W. R. Thurber, Mark D. Vaudin, M M. Fahmi, D Bryson, S N. Mohammad
The electronic structure of Si-doped InyGa1-yAs1-xNx films on GaAs substrates, grown by nitrogen-plasma-assisted MBE, was examined by photoreflectance (PR) spectroscopy at temperatures between20 K and 300 K. The measured critical-point energies were

Precise Determination of 6 Li Cold Collision Parameters by Radio-Frequency Spectroscopy on Weakly Bound Molecules

March 1, 2005
Author(s)
M Bartenstein, A Altmeyer, S Riedl, R Geursen, S Jochim, C Chin, J Hecker Denschlag, R Grimm, Andrea Simoni, Eite Tiesinga, Carl J. Williams, Paul S. Julienne
Radio-frequency spectroscopy on weakly bound 6Li_2 molecules determines to high precision the molecular binding energies and the energy splitting between molecular states. By fitting the measurement to a multi-channel quantum scattering model, we determine

Propagating Waves of Network Formation Induced by Light

March 1, 2005
Author(s)
J Cabral, Jack F. Douglas
The exposure of a photopolymerizable liquid to ultraviolet (UV) radiation leads to a propagating wavefront of network formation that invades the unpolymerized material from the illuminated surface of the photosensitive material. We theoretically describe

Protocol Modifications for the DNS Security Extensions RFC 4035

March 1, 2005
Author(s)
R Arends, R Austein, M Larson, Daniel Massey, Scott W. Rose
This document is part of a family of documents that describe the DNS Security Extensions (DNSSEC). The DNS Security Extensions are a collection of new resource records and protocol modifications that add data origin authentication and data integrity to the

R-22 Replacement Status (in Portuguese) Part 1 and Part 2

March 1, 2005
Author(s)
J M. Calm, Piotr A. Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

Rapid Fixation of Methylene Chloride By a Macrocyclic Amine

March 1, 2005
Author(s)
J C. Lee, Keith J. Stanger, Bruce C. Noll, Carlos A. Gonzalez, M Marquez, Bradley D. Smith
A simple macrocyclic amine is alkylated by methylene chloride to give a quaternary ammonium chloride salt. When methylene chloride is the solvent, the reaction exhibits pseudo first order kinetics, and the reaction half-life at 25.0 C is 2.0 minutes. The

Rate Constants for Reactions of Phenoxyl Radicals in Solution

March 1, 2005
Author(s)
Pedatsur Neta, J Grodkowski
Absolute rate constants for reactions of phenoxyl radicals in solution have been compiled and evaluated from the literature. Rate constants are included for phenoxyl radicals bearing various substituents, including semiquinone radicals and radical ions, as

Resource Records for the DNS Security Extensions, RFC 4034

March 1, 2005
Author(s)
R Arends, R Austein, M Larson, Daniel Massey, Scott W. Rose
This document is part of a family of documents that describe the DNS Security Extensions (DNSSEC). The DNS Security Extensions are a collection of resource records and protocol modifications that provide source authentication for the DNS. This document

Second Harmonic Magneto-Resistive Imaging to Authenticate and Recover Data from Magnetic Storage Media

March 1, 2005
Author(s)
David P. Pappas, Alexey Nazarov, D Stevenson, Steven Voran, Mike E. Read, Erin M. Gormley, James Cash, Ken Marr, James Ryan
A scanning magneto-resistive (MR) microscope was developed for high resolution imaging of magnetic tapes and digital media. Second harmonic detection was used to remove thermal anomalies. We were able to image sufficient lengths of tape for authentication

Slap Fingerprint Segmentation Evaluation 2004 Analysis Report

March 1, 2005
Author(s)
Brad Ulery, R. A. Hicklin, Craig I. Watson, Michael D. Indovina, Kayee Hanaoka
The Slap Fingerprint Segmentation Evaluation 2004 (Slap Seg04) was conducted to assess the accuracy of algorithms used to segment slap fingerprint images into individual fingerprint images. Segmenters from ten different organizations were evaluated on data

Technology for the Information Commons in a Special Library

March 1, 2005
Author(s)
Nancy Allmang, Rosa Liu
Recently, Information Commons has become a buzzword with two meanings--a gathering place for collaborating and sharing new technologies, or a virtual spot for disseminating intellectual information. This case study highlights technologies utilized by a

Testing BIOS Interrupt 0x13 Based Software Write Blockers

March 1, 2005
Author(s)
James R. Lyle, Paul E. Black
We report observations and experience in the Computer Forensics Tool Testing (CFTT) project while developing methodologies to test interrupt 0x13 based software write block (SWB) tools. A write blocker allows access to all data on a storage device while
Displaying 37076 - 37100 of 73929
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