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Displaying 4901 - 4925 of 7112

Physical and chemical characterization techniques for metallic powders

August 28, 2013
Author(s)
John A. Slotwinski, Paul E. Stutzman, Stephanie S. Watson, Edward J. Garboczi, Max A. Peltz, Chiara F. Ferraris
Systematic studies have been done on two different powder materials used for additive manufacturing: stainless steel and cobalt-chrome. An extensive array of characterization techniques were applied to these two powders. The physical techniques included

Feature Information Model for Disassembly

August 20, 2013
Author(s)
Shaw C. Feng
As sustainability becomes an important issue nowadays, disassembly becomes one of the key processes to turn out-of-service products into new or rebuilt products to save energy and materials. A disassembly process includes many subprocesses, such as

Significance Test with Data Dependency in Speaker Recognition Evaluation

July 25, 2013
Author(s)
Jin Chu Wu, Alvin F. Martin, Craig S. Greenberg, Raghu N. Kacker, Vincent M. Stanford
To evaluate the performance of speaker recognition systems, a detection cost function defined as a weighted sum of the probabilities of type I and type II errors is employed. The speaker datasets may have data dependency due to multiple uses of the same

Versus: A Framework for General Content-Based Comparisons

October 8, 2012
Author(s)
Peter Bajcsy, Antoine Vandecreme, Benjamin J. Long, Paul Khouri Saba, Joe Chalfoun, Luigi Marini, Rob Kooper, Michal Ondrejcek, Kenton McHenry, Smruti Padhy
Versus is a framework for the execution and dissemination of customizable content-based file comparison methods. Given digital objects such as files, database entries, or in-memory data structures, we are interested in establishing their proximity (i.e

Families of Elliptic Curves with Rational 3-torsion

January 30, 2012
Author(s)
Dustin Moody, Hongfeng Wu
In this paper we look at three families of elliptic curves with rational 3-torsion over a finite field. These families include Hessian curves, twisted Hessian curves, and a new family we call generalized DIK curves. We find the number of Fq-isogeny classes

Characterization of high-purity, pulsed squeezed light at telecom wavelengths from pp-KTP for quantum information applications

December 1, 2010
Author(s)
Thomas Gerrits, Burm Baek, Martin J. Stevens, Brice R. Calkins, Adriana E. Lita, Scott C. Glancy, Emanuel H. Knill, Sae Woo Nam, Richard P. Mirin, Robert Hadfield, Ryan Bennink, Warren Grice, Sander N. Dorenbos, Tony Zijlstra, Teun Klapwijk, Val Zwiller
… applications such as continuous variable quantum computing and the generation of optical Schrödinger cat …

NONLINEAR MODAL ANALYSIS AND SUPERPOSITION

July 25, 2010
Author(s)
Kevin K. Wong, John L. Harris
… material nonlinearity using the force analogy method and computing the modal dynamics using the state space method. …

MODELING THE BURNING OF COMPLICATED OBJECTS USING LAGRANGIAN PARTICLES

July 4, 2010
Author(s)
Kevin B. McGrattan, Randall J. McDermott, William E. Mell, Glenn P. Forney, Jason E. Floyd, Simo A. Hostikka
A methodology is described for representing complicated objects within a computational fluid dynamics model. These objects are typically collections of similar items that are too small to define on the numerical grid that is used to solve the governing

Tailored State Preparation for Solid State Quantum Memory

May 16, 2010
Author(s)
Elizabeth A. Goldschmidt, Sergey V. Polyakov, Sarah E. Beavan, Jingyun Fan, Alan L. Migdall
We use spectral hole burning in Pr3+:Y2SiO5 in order to prepare spectral distributions of ions optimized for using such a material as a quantum memory for photon states. Our spectral hole-burning implementations include preparing an ensemble of ions to be

The Solidification of an Ideal Ternary Alloy in a Mushy Layer

March 24, 2010
Author(s)
Daniel M. Anderson, Geoffrey B. McFadden, Sam R. Coriell, Bruce Murray
We consider a model for the solidification of an ideal ternary alloy in a mushy layer that incorporates the effects thermal and solutal diffusion, convection and solidification. Our results reveal that although the temperature and solute fields are

Atmospheric Retention of Man-made CO 2 Emissions

June 8, 2009
Author(s)
Bert W. Rust
Rust and Thijsse have shown that global annual average temperature anomalies T(t i) vary linearly with atmospheric CO 2 concentrations c(t i). The c(t i) can be related to man-made CO 2 emissions F(t i) by a linear regression model whose solution vector

Programmable Instrumentation & GHz Signaling for Quantum Communication Systems

April 30, 2009
Author(s)
Alan Mink, Joshua C. Bienfang, Robert J. Carpenter, Lijun Ma, Barry J. Hershman, Alessandro Restelli, Xiao Tang
We discussed custom instrumentation for high-speed single photon metrology. We focus on the difficulty of GHz data sampling and provide some techniques on how to accomplish it. We also discuss the benefits of field programmable gate arrays as the basis for

GaN nanowire carrier concentration calculated from light and dark resistance measurements

January 30, 2009
Author(s)
Lorelle Mansfield, Kristine A. Bertness, Paul T. Blanchard, Todd E. Harvey, Aric W. Sanders, Norman A. Sanford
We obtained limits on the carrier concentration and mobility of silicon-doped gallium nitride nanowires at room temperature with light and dark resistance data. Current-voltage measurements were performed on single-nanowire devices in the dark and under

Fiducial Intervals for the Magnitude of a Complex-Valued Quantity

December 19, 2008
Author(s)
Chih-Ming Wang, Hariharan K. Iyer
This paper discusses a fiducial approach for constructing uncertainty intervals for the distance between k normal means and the origin. When k=2 this distance is equivalent to the magnitude of a complex-valued quantity. Uncertainty intervals for the

Modeling Molecular Recognition: Theory and Application

October 16, 2008
Author(s)
K L. Mardis, R Luo, L David, M Potter, A J. Glemza, G F. Payne, M K. Gilson
Efficient, reliable methods for calculating the binding affinities of noncovalent complexes would allow advances in a variety of areas such as drug discovery and separation science. We have recently described a method that accommodates significant physical

Object-oriented Model for IEEE 1588 Standard

October 1, 2007
Author(s)
Kang B. Lee, Eugene Song
… with technologies such as network communication, local computing, and distributed objects. This paper describes an …

Measuring the Overall Security of Network Configurations Using Attack Graphs

July 27, 2007
Author(s)
Lingyu Wang, Anoop Singhal, Sushil Jajodia
Today?s computer systems face sophisticated intrusions during which multiple vulnerabilities are combined for reaching an attack goal. To quantitatively assess the security of a network, one must first understand the interplay between vulnerabilities and

An Exact, Algebraic Solution for the Incubation Period of Superfill

January 1, 2004
Author(s)
Daniel Josell, Thomas P. Moffat, Daniel Wheeler
Recent publications have used the impact of area change coupled with conservation of adsorbed catalyst to quantify the superfill effect of bottom-up feature filling during electrodeposition and chemical vapor deposition. This work describes how that
Displaying 4901 - 4925 of 7112
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