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Displaying 44751 - 44775 of 73960

Interoperability Standards in the Semantic Web

December 1, 2001
Author(s)
Steven R. Ray
The growth in the use of the Internet brings with it an increase in the number of interconnections among information systems supporting the manufacturing supply chain as well as other businesses. Each of these interconnections must be carefully prescribed

Intrinsic Birefringence in Calcium Fluoride and Barium Floride

December 1, 2001
Author(s)
John H. Burnett, Zachary H. Levine, Eric L. Shirley
We have measured an intrinsic birefringence in calcium fluoride in the ultraviolet for wavelengths from 365 nm down to 156 nm, and compared these results with theory and calculations. The measured effect is largest for propagation in the [110] direction

Intrinsic Viscosity and the Electric Polarizability of Arbitrarily Shaped Objects

December 1, 2001
Author(s)
M Mansfield, Jack F. Douglas, Edward Garboczi
The problem of calculating the electrical polarizability tensor αe of objects of arbitrary shape has been reformulated in terms of path integration and implemented computationally. The method simultaneously yields the electrostatic capacity C and the

Measurement of Dynamic Properties in Thin-Films

December 1, 2001
Author(s)
Thomas J. Silva
I present a summary of the various techniques available for the determination of response times in magnetic recording head materials. In addition, I derive useful equations for the interpretation of data in the context of the Landau-Lifshitz-Gilbert

Modeling of Intermediate Behavior in Co/Pt Vertical Magnetization Multilayers

December 1, 2001
Author(s)
Lawrence H. Bennett, Edward Della Torre, R A. Fry
MOKE hystersis loops were acquired at various radial positions on a 25 mm diameter disk of a (0.3 nm Co/1.2 nm Pt)15 multilayer. At the center of the disk, the loop exhibited bimodal features. At the outer edge, the reversal behavior was significantly

Molecular Iodine Clock

December 1, 2001
Author(s)
Jun Ye, L -. Ma, J L. Hall
We demonstrate a simple optical clock based on an optical transition of iodine molecules, providing a frequency stability stability superior to most rf sources. Combined with a femtosecond-laser-based optical comb to provide the phase coherent clock

Nanotechnology for Next Generation Josephson Voltage Standards

December 1, 2001
Author(s)
Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs
We have developed two voltage standard systems: 1) the programmable Josephson voltage standard and 2) the Josephson arbitrary waveform synthesizer. The programmable system is fully automated and provides stable programmable dc voltages from -1.2 V to +1.2

Near-Optimal Parameter for Tikhonov and Other Regularization Methods

December 1, 2001
Author(s)
Dianne M. O'Leary
Choosing the regularization parameter for an ill-posed problem is an art based on good heuristics and prior knowledge of the noise in the observations. In this work we propose choosing the parameter, without a priori information, by approximately

NIST Databases on Atomic Spectra

December 1, 2001
Author(s)
Daniel E. Kelleher, William C. Martin, Wolfgang L. Wiese, Jeffrey R. Fuhr, Arlene Musgrove, Karen J. Olsen, Peter J. Mohr, Joseph Reader, Jean E. Sansonetti, Larissa Podobedova
A summary of the contents and features of the National Institute of Standards and TEchnology (NIST) Atomic Spectra Database (ASD) and other published and upcoming compilations and databases from NIST is presented.

Octacalcium Phosphate Carboxylates

December 1, 2001
Author(s)
Milenko Markovic
In the last two decades the interactions of organic molecules with different inorganic minerals have been the focus of considerable biomineralization and biomaterial research. The elucidation of the role of macromolecules, e.g. collagen, proteins, and

Passenger Minivan Fire Tests. REPORT OF TEST FR 4012

December 1, 2001
Author(s)
D W. Stroup, Laurean A. DeLauter, James J. Lee, G Roadarmel
Two fire tests were conducted using a passenger minivan. The fire test scenarios were selected as part of a fire investigation being conducted by the U.S. Department of Treasury s Bureau of Alcohol, Tobacco, and Firearms. Heat release rate was determined

Polarized Light Scattering From Metallic Particles on Silicon Wafers

December 1, 2001
Author(s)
Jae H. Kim, S H. Ehrman, George W. Mulholland, Thomas Germer
Polarized light scattering by monodisperse copper and gold spheres, having diameters ranging from 96 nm to 205 nm deposited on silicon substrates were measured using visible light. The results are compared to an exact theory for scattering by a sphere on a

Predicting Resource Demand in Heterogeneous Active Networks

December 1, 2001
Author(s)
V Galtier, Kevin L. Mills, Y Carlinet, S Bush, A Kulkarni
Recent research, such as the Active Virtual Network Management Prediction (AVNMP) system, aims to use simulation models running ahead of real time to predict resource demand among network nodes. If accurate, such predictions can be used to allocate network

Rapid Calculation of X-Ray Absorption Near Edge Structure Using Parallel Computation

December 1, 2001
Author(s)
Charles E. Bouldin, June E. Sims, Howard Hung, J J. Rehr, A L. Ankudinov
Modeling x-ray absorption near edge structure (XANES) requires computationally intensive calculations. We show that parallel processing reduces the time required for XANES calculations by a factor of up to 50 over desktop computers. Parallel processing is

Recommendation for Block Cipher Modes of Operation Methods and Techniques

December 1, 2001
Author(s)
Morris J. Dworkin
This recommendation defines five confidentiality modes of operation for use with an underlying symmetric key block cipher algorithm: Electronic Codebook (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), Output Feedback (OFB), and Counter (CTR)
Displaying 44751 - 44775 of 73960
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