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Displaying 36076 - 36100 of 74178

Hierarchical Control and Performance Evaluation of Multi-Vehicle Autonomous Systems

May 4, 2005
Author(s)
Stephen B. Balakirsky, Christopher J. Scrapper Jr, Elena R. Messina
This paper will describe how the Mobility Open Architecture Tools and Simulation (MOAST) framework can facilitate performance evaluations of RCS compliant multi-vehicle autonomous systems. This framework provides an environment that allows for simulated

A Curve-Based Mixed System Rating Method for Unitary Air Conditioners

May 2, 2005
Author(s)
William V. Payne, Piotr A. Domanski
The curve-based method was evaluated based on performance predictions for nine mixed systems, which were also tested by an independent testing laboratory. Capacity predictions were within 5% of the tested values for six of nine mixed systems, and four of

Nonparametric Analysis of Fingerprint Data

May 2, 2005
Author(s)
Jin Chu Wu, Charles L. Wilson
This paper demonstrates that, for large-scale tests, the match and non-match similarity scores have no specific underlying distribution function. The forms of these distribution functions require a nonparametric approach for the analysis of the fingerprint

A Simulation System with Neutral Data Interface for Shipbuilding Operation

May 1, 2005
Author(s)
Guodong Shao, Charles R. McLean, Swee K. Leong
Simulation technology is underutilized in the shipbuilding industry. The development of neutral data interfaces between simulation and other software applications, could make information sharing within a shipyard more effective and efficient, and hence

Application of Machine Shop Data Model in Manufacturing Simulation

May 1, 2005
Author(s)
Yan Luo, Yung-Tsun Lee
Simulation technology holds tremendous promise for the manufacturing industry. A machine shop data model has been developed at the National Institute of Standards and Technology (NIST) to represent neutral machine shop data for supporting machine shop

Boundary Fields in Reverberation Chambers

May 1, 2005
Author(s)
David A. Hill
A previous plane-wave integral representation for fields in a reverberation chamber is extended to analyze fields near the boundaries of a rectangular chamber. The field point can be located near a single wall, a right-angle bend, or a right-angle corner

Broad Spectrum Capabilities for CW Laser Power Measurements at NIST

May 1, 2005
Author(s)
Joshua A. Hadler
Recent improvements for mid-level laser power measurements (1 μW to 1 W) have increased the range of calibrations available to customers of our CW laser power measurements. In this presentation we present an overview of our capabilities as well as recent

Comparison of Measurements and Simulations for Machining of Aluminum

May 1, 2005
Author(s)
Robert W. Ivester, Eric P. Whitenton, Laurent Deshayes
This paper compares experimental measurements and model-based simulations of cutting temperature, force, and chip thickness for machining of aluminum. Cutting temperatures have been measured using high-speed infrared videography, and forces have been

Criteria for Exact Qudit Universality

May 1, 2005
Author(s)
G K. Brennen, Dianne M. O'Leary, Stephen Bullock
We describe criteria for implementation of quantum computation in qudits. A qudit is a d-dimensional system whose Hilbert space is spanned by states |0>, |1>,..., |d-1>. An important earlier work of Mathukrishnanand Stroud describes how to exactly simulate

Effect of an Organogelator on the Properties of Dental Composites

May 1, 2005
Author(s)
Elizabeth Wilder, K S. Wilson, Janet Quinn, Drago Skrtic, Joseph M. Antonucci
Bioactive dental composites containing amorphous calcium phosphate have the potential to remineralize caries lesions and white spots, but their applications are limited by the inherent weakness of calcium phosphate as a filler material. In order to extend

Effect of Conformal Roughness on Ferromagnetic Resonance Linewidth in Thin Permalloy Films

May 1, 2005
Author(s)
Brian B. Maranville, J Mallett, Thomas P. Moffat, Robert McMichael, Andrew P. Chen, William F. Egelhoff Jr.
The ferromagnetic resonance line width is a result of both intrinsic damping and contributions from inhomogeneities, which in thin films can be dominated by the roughness. Microstructural measurements and magnetization dynamics are reported here for 50 nm

Experimental Determination of Electron Inelastic Mean Free Paths in 13 Elemental Solids in the 50 eV to 5000 eV Energy Range by Elastic-Peak Electron Spectroscopy

May 1, 2005
Author(s)
S Tanuma, T Shiratori, Tetsuya Kimura, K Goto, S Ichimura, Cedric J. Powell
We have determined electron inelastic mean free paths (IMFPs) in C (graphite), Si, Cr, Fe, Cu, Zn, Ga, Mo, Ag, Ta, W, Pt and Au by elastic-peak electron spectroscopy (EPES) using Ni as a reference material for electron energies between 50 eV and 5000 eV

GaAs Buffer Layer Morphology and Lateral Distributions of InGaAs Quantum Dots

May 1, 2005
Author(s)
Alexana Roshko, Todd E. Harvey, Susan Y. Lehman, Richard Mirin, Kristine A. Bertness, Brittany Hyland
Atomic force microscopy was used to study the morphology of GaAs buffer layers and the density and height distributions of self-assembled InGaAs quantum dots (QDs) grown on these buffers by molecular beam epitaxy. The surface roughness and terrace size of
Displaying 36076 - 36100 of 74178