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Displaying 37901 - 37925 of 74035

Requirements on Information Technology for Product Lifecycle Management

August 1, 2004
Author(s)
Peter O. Denno, T Thurman
Good decision-making is founded on good information. Information technology supporting product lifecycle management ought to provide a high degree of information cohesion and traceability ? knowledge of the interrelations among data, and basis for belief

Standard Reference Material 1751 - A Gallium Melting-Point Standard

August 1, 2004
Author(s)
Gregory F. Strouse
The melting point of gallium %2829%2E7646%B0C%29 is a defining thermometric fixed point of the International Temperature Scale of 1990 %28ITS%2D90%29%2E Realization of this melting point is performed using a fixed%2Dpoint cell containing high%2Dpurity

Statistical Analysis of Key Comparisons with Linear Trends

August 1, 2004
Author(s)
Nien F. Zhang, Hung-Kung Liu, N Sedransk, W Strawderman
A statistical analysis for Key Comparisons with linear trend is proposed. The approach has the advantage that it is consistent with the case in which there is no trend. The uncertainties for KCRV and the degrees of equivalence are also provided. As an

Tackling the Semantic Interoperability of Modern Manufacturing Systems

August 1, 2004
Author(s)
Steven R. Ray
The need for increased precision in information standards coupled with the desire to automate parts of the system integration process has led us to the use of a formal semantic approach to systems integration. This paper provides a brief overview of some

TEM horn antennas: A promising new technology for compliance testing

August 1, 2004
Author(s)
Chriss A. Grosvenor, Robert T. Johnk, David R. Novotny, Seturnino Canales
Abstract-This paper discusses the advantages of using a TEM-horn antenna over conventional EMC antennas such as the log-periodic, hybrids, or biconical antennas. Important issues such as frequency coverage, linearity, time-resolution of events, cost, and

The IEEE Standard on Transitions, Pulses, and Related Waveforms, Std-181-2003

August 1, 2004
Author(s)
Nicholas Paulter, Donald R. Larson, Jerome J. Blair
The IEEE has written a new standard on pulse techniques and definitions to replace the withdrawn standards, IEEE-Std-181-1977 and Std-194-1977. The Std-181-2003 combines information from both of the withdrawn standards. Relative to the withdrawn standards

The Remarkable Metrological History of Radiocarbon Dating [II]

August 1, 2004
Author(s)
Lloyd A. Currie
Radiocarbon dating would not have been possible if 14C had not had the wrong half-life -- a fact that delayed its discovery [1]. Following the discovery of this 5730 year radionuclide in laboratory experiments by Ruben and Kamen, it became clear to W.F

Thermoacoustic Boundary Layers Near the Liquid-Vapor Critical Point

August 1, 2004
Author(s)
Keith A. Gillis, Iosif I. Shinder, Michael R. Moldover
We measure and calculate the sound attenuation within thermoacoustic boundary layers between solid surfaces and xenon at its critical density rc as the reduced temperature t=(T -Tc)/Tc approaches zero. (Tc is the critical temperature.) Using the singular

Wet chemical cleaning of plasma oxide grown on heated (001) InP surfaces

August 1, 2004
Author(s)
Bogdan Lita, O Pluchery, R L. Opila, Y J. Chabal, G. Bunea, J P. Holman, E J. Bekos
Wet chemical cleaning is performed prior to most semiconductor processing steps, including epitaxial growth, metal and dielectric film deposition, and diffusion, with the purpose of removing unwanted chemical species that reside on the wafer surface. In

The NIST Road Network Database: Version 1.0

July 30, 2004
Author(s)
Craig I. Schlenoff, Stephen B. Balakirsky, Tony Barbera, Christopher J. Scrapper Jr, Jerome G. Ajot, Eric Hui
For an autonomous vehicle to be able to navigate a road network, it must be aware of and must respond appropriately to any object it encounters. This includes other vehicles, pedestrians, debris, construction, accidents, emergency vehicles, ? and it also

The NIST Road Network Database: Version 1.0

July 30, 2004
Author(s)
Craig I. Schlenoff, Stephen B. Balakirsky, Anthony J. Barbera, Christopher J. Scrapper Jr, Jerome G. Ajot, Eric Hui, M Paredes
For an autonomous vehicle to be able to navigate a road network, it must be aware of and must respond appropriately to any object it encounters. This includes other vehicles, pedestrians, debris, construction, accidents, emergency vehicles, and it also

Large-angle, gigahertz-rate random telegraph switching induced by spin-momentum transfer

July 27, 2004
Author(s)
Matthew Pufall, William Rippard, Shehzaad F. Kaka, Stephen E. Russek, Thomas J. Silva, Jordan A. Katine, Matt Carey
We show that a spin-polarized dc current passing through a small magnetic element induces two-state, random telegraph switching of the magnetization via the spin-momentum transfer effect. The resistances of the states differ by up to 50% of the change due

Measuring residual resistivity ratio of high-purity Nb

July 27, 2004
Author(s)
Loren F. Goodrich, Theodore C. Stauffer, Jolene Splett, Dominic F. Vecchia
We compared methods of measuring the residual resistivity ratio (RRR) of high-purity Nb using transport current. Our experimental study is intended to answer some fundamental questions about the best measurement for RRR and the biases that may exist among

Optical Characterization of Oligo (phenylene-ethynylene) Self-Assembled Monolayers on GoldMonolayers on Gold

July 27, 2004
Author(s)
Lee J. Richter, Clayton S. Yang, P T. Wilson, Christina A. Hacker, Roger D. van Zee, J J. Stapleton, D L. Allara, Yuxing Yao, J M. Tour
Vibrationally resonant sum frequency generation (VR-SFG) and spectroscopic ellipsometry (SE) have been used to characterize self-assembled monolayer films of unsubstituted and mononitro substituted oligo(phenylene-ethynylene) molecules on vapor deposited

Variable-temperature critical-current measurements on a Nb-Ti wire

July 27, 2004
Author(s)
Loren F. Goodrich, Theodore C. Stauffer
We made variable-temperature critical-current (I c) measurements on a commercial multifilamentary Nb-Ti wire for temperatures (T) from 4 to 9 K and magnetic fields (H) from 0 to 11.5 T using transport current. The measurements cover the whole range of
Displaying 37901 - 37925 of 74035