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Displaying 40676 - 40700 of 74404

Extending Phase Field Models of Solidification to Polycrystalline Materials

December 1, 2003
Author(s)
James A. Warren, R Kobayashi, A E. Lobkovsky, W Carter
We present a new, two dimensional phase field model of grain boundary statics and dynamics. We begin with a brief description and physical motivation of the crystalline phase field model. The description if followed by characterization and analysis of some

Fracture of Ceramic/Ceramic/Polymer Trilayers for Biomechanical Applications

December 1, 2003
Author(s)
Y N. Deng, P Miranda, Antonia Pajares, Brian R. Lawn
Fracture damage in trilayers consisting of outer and inner brittle layers bonded to a compliant (polycarbonate) substrate and subjected to concentrated surface loading is analyzed. The principal mode of fracture is radial cracking at the undersurface of

GETNAMEINFO Test Suite Version 1

December 1, 2003
Author(s)
Sandra Martinez
The goal of this document is to help W3C editors write better specifications, by making a specification easier to interpret without ambiguity and clearer as to what is required in order to conform. It focuses on how to define and specify conformance. It

Influence of Interface Alloying on the Magnetic Properties of Co/Pd Multilayers

December 1, 2003
Author(s)
J Carrey, A. E. Berkowitz, William F. Egelhoff Jr., D J. Smith
An important issue concerning Co/Pd multilayers is the origin of their perpendicular anisotropy. One explanation is broken symmetry of Co atoms at the Co/Pd interface; another involves magnetoelastic effects in an interfacial Co-Pd alloy. We examined this

Long-Range Nature of Feshbach Molecules in Bose-Einstein Condensates

December 1, 2003
Author(s)
T K hler, T Gasenzer, Paul S. Julienne, K Burnett
We discuss the long range nature of the molecules produced in recent experiments on molecular Bose-Einstein condensation. The properties of these molecules depend on the full two-body Hamiltonian and not just on the states of the system in the absence of

Measurement of Heat Conduction Through Bonded Regenerator Matrix Materials

December 1, 2003
Author(s)
Michael A. Lewis, Ray Radebaugh
Regenerative heat exchangers have had a significant influence on the development of small refrigerators for cryogenic applications. The optimized design of these regenerators takes into account the axial thermal conduction of the matrix. Until recently

Modeling Fire Growth and Spread in Houses. (Abstract/Presentation/Visuals)

December 1, 2003
Author(s)
Kevin B. McGrattan
In cooperation with the fire protection engineering community, a numerical fire model, Fire Dynamics Simulator (FDS), is being developed at NIST to study fire behavior and to evaluate the performance of fire protection systems in buildings. Version 1 of

Molecular Dynamics Study of the Solubility of Oxygen in Liquid Pyridine

December 1, 2003
Author(s)
Raymond D. Mountain
The solubility of oxygen in liquid pyridine is estimated using molecular dynamics to evaluate the chemical potential of the gas molecule in the liquid. The Kirkwood charging method is used with empirical potentials that generate reliable equations of state

Multimodal Biometric Authentication Methods: A COTS Approach

December 1, 2003
Author(s)
Michael D. Indovina, Robert D. Snelick, Alan Mink
We examine the performance of multimodal biometric authentication systems using state-of-the-art Commercial Off-the-Shelf (COTS) fingerprint and face biometrics on a population approaching 1000 individuals. Prior studies of multimodal biometrics have been
Displaying 40676 - 40700 of 74404
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