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NIST Authors in Bold

Displaying 37976 - 38000 of 73929

Interlayer Exchange Coupling

December 13, 2004
Author(s)
Mark D. Stiles
In magnetic multilayers, in which ferromagnetic layers are separated by non-magnetic spacer layers, the magnetizations are coupled by interactions across the spacer layer. One type of coupling, bilinear exchange coupling, originates from the quantum well

Samples and Standards

December 13, 2004
Author(s)
Richard M. Lindstrom, C Yonezawa
For analytical accuracy, the detailed interaction of neutrons with the sample is of more importance in prompt-gamma activation analysis (PGAA) with a neutron beam than in conventional activation analysis. Selection of an optimum sample size and shape is

Zigzag-shaped magnetic sensors

December 13, 2004
Author(s)
Fabio C. da Silva, Willard C. Uhlig, Anthony B. Kos, Susan A. Schima, Joe Aumentado, John Unguris, David P. Pappas
Magnetism in zigzag-shaped thin-film elements is investigated using scanning electron microscopy with polarization analysis, magnetotransport measurements, and micromagnetic simulations. We find that the angle of magnetization alternates along the length

Report of the 89th National Conference on Weights and Measures

December 9, 2004
Author(s)
Kenneth S. Butcher, Steven E. Cook, Linda D. Crown, K M. Dresser, H V. Oppermann, R C. Suiter, Juana S. Williams
The 89th Annual Meeting of the National Conference on Weights and Measures (NCWM) was held July 11 through July 15, 2004, at the Pittsburgh Hilton and Towers in Pittsburgh, PA. The theme of the meeting was, Changes and Opportunities. Reports by the NCWM

Adding Water Vapor Radiometer Data to GPS Carrier-Phase Time Transfer

December 7, 2004
Author(s)
C Hackman, Judah Levine
When analyzing GPS carrier-phase time transfer (GPSCPTT) data, it is often necessary to estimate the zenith troposphere delay (ZTD) at each site as a function of time. That is because the index of refraction of the troposphere varies rapidly. Both the ZTD

Coping with Overload on the Network Time Protocol Public Servers

December 7, 2004
Author(s)
David Mills, Judah Levine, Richard Schmidt, David Plonka
The public time servers operated by USNO and NIST provide time synchronization, directly or indirectly, to millions of Internet computers today. The load in the form of processor cycles and network traffic has doubled in the last two years and could

Microfabricated Atomic Clocks at NIST

December 7, 2004
Author(s)
Svenja A. Knappe, P Schwindt, Vladislav Gerginov, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John Moreland
In this paper we present the latest progress in the development, fabrication, and characterization of a microfabricated atomic frequency reference at NIST. With volumes below 10 mm3 the physics packages contain the complete integrated assembly for probing

Models and Confidence Intervals for True Values in Interlaboratory Trials

December 6, 2004
Author(s)
Hariharan K. Iyer, Chih-Ming Wang, T Mathew
We consider the one-way random effects model with unequal sample sizes and heterogeneous variances. Using the method of generalized confidence intervals, we develop a new confidence interval procedure for the mean. Additionally, we investigate two

McMurdie

December 3, 2004
Author(s)
Alan D. Mighell, Gasper J. Piermarini, Winnie K. Wong-Ng
Howard F. McMurdie - known as Mac to his friends oa colleagues--was an exemplar of good living. Blessed with excellent health, a loving family, and many close colleagues, Mac was active and productive to the very end. It is therefore with the deepest

Realization of quantum error correction

December 2, 2004
Author(s)
J Chiaverini, Dietrich G. Leibfried, Tobias Schaetz, Murray D. Barrett, Brad R. Blakestad, Joseph W. Britton, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R Ozeri, David J. Wineland
Scalable quantum computation and communication require error control to protect quantum information against unavoidable noise. Quantum error correction protects quantum information stored in two-level quantum systems (qubits) by rectifying errors with

A Multilens Measurement Platform for High-Throughput Adhesion Measurements

December 1, 2004
Author(s)
Aaron M. Forster, Weiping Zhang, Christopher Stafford
There are few methods available for performing high-throughput adhesion measurements. Current high-throughput methodologies for measuring interfacial adhesion rely on serial or sequential testing of discrete or continuous libraries. Alternatively, we have

A New Design for High-Throughput Peel Tests: Statistical Analysis and Example

December 1, 2004
Author(s)
A Chiche, Weiping Zhang, Christopher Stafford, Alamgir Karim
The peel test is one of the most common techniques to investigate the properties of pressure sensitive adhesives (PSAs). As the demand increases for combinatorial tools to rapidly test material performance, designinig a high-throughput peel test is a

A Perl-Based Framework for Distributed Processing

December 1, 2004
Author(s)
Douglas R. White, John M. Tebbutt
Our results extending Kuhn's fault class hierarchy provide a justification for the focus of fault-based testing strategies on detecting particular faults and ignoring others. We develop a novel analytical technique that allows us to elegantly prove that

A Perl-Based Framework For Distributed Processing

December 1, 2004
Author(s)
Douglas R. White, John M. Tebbutt
The National Software Reference Library (NSRL) of the U.S. National Institute of Standards and Technology (NIST) collects software from various sources and publishes file profiles computed from this software (such as MD5 and SHA-1 hashes) as a Reference

A Simple Approach to One-Laser, Broadband CARS Microscopy

December 1, 2004
Author(s)
Marcus T. Cicerone, T W. Kee
Coherent anti-Stokes Raman scattering (CARS) microscopy is emerging as a powerful method for imaging materials and biological systems, partly because of its non-invasiveness and selective chemical sensitivity. However, its full potential for species
Displaying 37976 - 38000 of 73929
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