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Search Publications

NIST Authors in Bold

Displaying 36476 - 36500 of 73697

SysML and UML 2 Support for Activity Modeling

June 1, 2005
Author(s)
Conrad E. Bock
This article describes activity modeling as specified by the Systems Modeling Language (SysML) and the finalization of the Unified Modeling Language version 2 (UML 2). It reviews and updates an earlier proposed alignment between Enhanced Functional Flow

Thermal Imaging Research Needs for First Responders: Workshop Proceedings

June 1, 2005
Author(s)
Francine K. Amon, Nelson P. Bryner, Anthony P. Hamins
This workshop provided a forum to discuss the strategies, technologies, procedures, best practices, research and development that can significantly improve thermal imaging technology. The goal of the workshop was to identify barriers that impede advances

Tuning of Tungsten Thin Film Superconducting Transition Temperature for Fabrication of Photon Number Resolving Detectors

June 1, 2005
Author(s)
Adriana Lita, Danna Rosenberg, Sae Woo Nam, Aaron J. Miller, Davor Balzar, L. M. Kaatz, R. E. Schwall
Tungsten thin films can form in one of two crystal structures: alpha (bcc), with a superconducting transition temperature (T c) of 15 mK, and beta (A15), with a T c between 1 and 4 K. Films with intermediate T cs are composed of both alpha and beta phases

Unexpected Effect of Field Angle in Magnetoresistance Measurements of High-Purity Nb

June 1, 2005
Author(s)
Loren F. Goodrich, Theodore C. Stauffer, Jolene Splett, Dominic F. Vecchia
We report on unexpected field-angle dependence of the magnetoresistance measurements of commercial, high-purity Nb discovered during our study of residual resistivity ratio ( RRR) measurements. The ( RRR) value indicates the purity and the low-temperature

Variable-Temperature Critical-Current Measurements on a Nb 3 Sn Wire

June 1, 2005
Author(s)
Loren F. Goodrich, Theodore C. Stauffer
We made variable-temperature critical-current (I c) measurements on a commercial multifilamentary Nb 3Sn wire for temperatures (T) from 4 to 17 K and magnetic fields (H) from 0 to 12 T using transport current. The sample had a diameter of 0.811 mm and a Cu

Acoustical methods to determine thin-film and nanoscale mechanical properties

May 31, 2005
Author(s)
Donna C. Hurley, Roy H. Geiss, N Jennett, Malgorzata Kopycinska-Mueller, A Maxwell, Jens Mueller, David T. Read, J Wright
We describe two acoustical methods to evaluate the mechanical properties of thin films and nanoscale structures: atomic force acoustic microscopy and surface acoustic wave spectroscopy. The elastic properties of an 800-nm-thick nickel film were examined

AIAG Demonstrates Metrology Interoperability: To Save You Time and Money

May 31, 2005
Author(s)
William G. Rippey
The Automotive Industry Action Group (AIAG) is working on the challenges of interconnecting components of automated dimensional metrology systems. Our presentation explains how products that support interoperability standards for components of metrology

Review of the 3rd Non-LTE Code Comparison Workshop

May 31, 2005
Author(s)
Y Ralchenko, R W. Lee, C Bowen
A review of the 3rd workshop on comparison of computer codes for modeling population kinetics in non-LTE plasmas is presented. We discuss the motivation for and advantages of such meetings, selection of test cases, and technical organization of the

Critical Dimension Reference Features with Sub-Five Nanometer Uncertainty

May 30, 2005
Author(s)
Michael W. Cresswell, Ronald G. Dixson, William F. Guthrie, Richard A. Allen, Christine E. Murabito, Brandon Park, Joaquin (. Martinez, Amy Hunt
The implementation of a new type of HRTEM-imaging (High-Resolution Transmission Electron Microscopy) test structure, and the use of CD-AFM (CD-Atomic Force Microscopy) to serve as the transfer metrology have resulted in reductions in the uncertainties

Measurement of Thermal Properties of Gypsum Board at Elevated Temperatures

May 30, 2005
Author(s)
Samuel L. Manzello, Seul-Hyun Park, Dale P. Bentz, Tensei Mizukami
The thermal conductivity, specific heat, mass loss, and linear contraction for gypsum board types widely used in the USA and Japan were measured both at room temperature and elevated temperatures. The gypsum board types tested include Type X and Type C

Securing Voice Over IP Networks

May 27, 2005
Author(s)
T J. Walsh, D. Richard Kuhn
Voice over IP - the transmission of voice over traditional packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and problems. Lower cost and greater flexibility are

Stabilized frequency comb with a self-referenced femtosecond Cr:forsterite laser

May 27, 2005
Author(s)
Kyoungsik Kim, Brian R. Washburn, G Wilpers, C. W. Oates, Leo W. Hollberg, Nathan R. Newbury, Scott Diddams, Jeffrey W. Nicholson, M. Yan
The frequency comb of a Cr:forsterite femtosecond laser is stabilized using the f-to-2f self-referencing technique. The frequency noise of the comb components at 1064, 1314, and 1550nm differs significantly from the noise of f0.

A Guide to the Internet Atomic Databases for Hot Plasmas

May 26, 2005
Author(s)
Y Ralchenko
The Internet atomic databases are nowadays considered to be the primary tool fordissemination of atomic data. We present here a review of numerical andbibliographic databases of importance for diagnostics of hot plasmas. Specialattention is given to the

Low noise synthesis of microwave signals from an optical source

May 26, 2005
Author(s)
John J. McFerran, Eugene N. Ivanov, A Bartels, G Wilpers, Christopher W. Oates, Scott A. Diddams, Leo W. Hollberg
We demonstrate the low noise synthesis of a harmonic comb of microwave frequencies using a femtosecond laser based synthesiser that is referenced to a cabity-stabilised laser. The residual phase noise is ~ -110dBc/Hz at 1 Hz from the 10 GHz harmonic. An

Site Specific X-Ray Photoelectron Spectroscopy Using X-Ray Standing Waves

May 26, 2005
Author(s)
Joseph C. Woicik
The x-ray standing wave technique is an experimental method that can accurately determine the precise crystallographic positions of atoms within a crystalline unit cell. As we have seen in preceding chapters of this book, this unique ability arises from

Anionic Effects in Hot Surface Combustions.

May 24, 2005
Author(s)
W W. Bannister, A Donatelli, F Bonner, F Lai, P Kurup, J Egan, E G. Jahngen, P Muanchareon, W Paramasawat, W Sriseubsai, S K. Chiang, V Kongkadee, S Sengupta, R Nagarajan, N Euaphantasate, V Parma, M Cazeca, E Chen, A Morales
Displaying 36476 - 36500 of 73697
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