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Displaying 1551 - 1575 of 7107

Viewing Technologies for CAD Models

August 1, 2003
Author(s)
Michelle P. Steves, Simon P. Frechette
This report describes Computer-Aided Design (CAD) model-viewing technologies1 used to support CAD-model review and analysis. CAD model viewers are tools that allow engineers and other users to view CAD models from distributed locations, often using

Variant Design for Mechanical Artifacts - A State of the Art Survey

January 1, 1993
Author(s)
James E. Fowler
Variant design refers to the techniques of adapting existing design specifications to satisfy new design goals and constraints. A survey of approaches supporting variant design is presented. Capabilities used in current commercial computer aided design

Standard Security Label for Information Transfer

September 6, 1994
Author(s)
National Institute of Standards and Technology (NIST), N Nazario
[Withdrawn October 19, 2015] Information Transfer security labels convey information used by protocol entities to determine how to handle data communicated between open systems. Information on a security label can be used to control access, specify

A Classical Kinetic Theory Approach to Lattice Boltzmann Simulation

October 1, 2001
Author(s)
Nicos Martys
An approach to lattice Boltzmann simulation is described, which makes a direct connection between classical kinetic theory and contemporary lattice Boltzmann modeling methods. This approach can lead to greater accuracy, improved numerical stability and

Classical Kinetic Theory Approach to Lattice Boltzmann Simulation.

October 1, 2001
Author(s)
N S. Martys
An approach to lattice Boltzmann simulation is described, which makes a direct connection between classical kinetic theory and contemporary lattice Boltzmann modeling methods. This approach can lead to greater accuracy, improved numerical stability and

A Survey of Standards for Product Lifecycle Management of Structural Composites

August 7, 2013
Author(s)
Christopher U. Brown, Joshua Lubell, Robert R. Lipman, Gaurav Ameta
Composites are needed when designing components with a high strength (along a particular direction) to weight ratio. Composites are widely used in the automotive, sports and aerospace industries. Designing a composite component requires highly concurrent

Data Structures for the Fire Data Management System, FDMS 2.0 (NISTIR 6088)

November 1, 1997
Author(s)
Rebecca W. Portier, Richard Peacock, Paul A. Reneke
Fire Data Management System, FDMS, is a design for a computer database to store and retrieve fire test results obtained from bench-scale and real-scale tests as well as fire simulation programs. By storing available fire test values in a common format

Analysis of CCRL Proficiency Cements 135 and 136 Using CEMHYD3D

August 1, 2000
Author(s)
Dale P. Bentz, X Feng, C Haecker, Paul E. Stutzman
This NISTIR provides experimental and computer modeling results for cements 135 and 136 issued by the Cement and Concrete Reference Laboratory (CCRL) at NIST in January of 2000. The purposes of this report are to characterize the ability of the NIST

A Wearable Wireless Monitoring System for the Detection of Pulmonary Edema

February 2, 2022
Author(s)
Kamran Sayrafian, Katjana Krhac, Uzay Bengi, Sema Dumanli Oktar
In this paper we investigate the feasibility of a simple wearable system that can be used at home to detect or monitor excess fluid buildup in the lungs. This is a medical condition referred to as pulmonary edema. A methodology has been developed to

Automatic Localization of Casting Defects with Convolutional Neural Networks

December 11, 2017
Author(s)
Ronay Ak, Max Ferguson, Yung-Tsun T. Lee, Kincho H. Law
Automatic localization of defects in metal castings is a challenging task, owing to the rare occurrence and variation in appearance of defects. Convolutional neural networks (CNN) have recently shown outstanding performance in both image classification and

An Optimized Design of Finned-Tube Evaporators Using the Learnable Evolution Model

April 1, 2004
Author(s)
Piotr A. Domanski, David A. Yashar, Kenneth Kaufman, RK S. Michalski
Optimizing the refrigerant circuitry for a finned-tube evaporator is a daunting task for traditional exhaustive search techniques due to the extremely large number of circuitry possibilities. For this reason, more intelligent search techniques are needed

Asymptotically Optimal Quantum Circuits for d-level Systems

June 17, 2005
Author(s)
Stephen Bullock, Dianne M. O'Leary, G K. Brennen
As a qubit is a two-level system whose state space is spanned by and , so a qudit is a -level system whose state space is spanned by , , . Quantum computation has stimulated much recent interest in algorithmsfactoring unitary evolutions of an -qubit state

100-Fold Reduction of Electric-Field Noise in an Ion Trap Cleanded with In Situ Argon-Ion-Beam Bombardment

September 7, 2012
Author(s)
Dustin Hite, Yves Colombe, Andrew C. Wilson, Kenton R. Brown, Ulrich J. Warring, Robert Jordens, John D. Jost, David P. Pappas, Dietrich Leibfried, David J. Wineland, Kyle McKay
Anomalous heating of trapped atomic ions is a major obstacle to their use as quantum bits in scalable quantum computers. The physical origin of this electric field noise is not fully understood, but experimental evidence suggests that it emanates from the

Direct Observation of Zitterbewegung in a Bose-Einstein condensate

July 3, 2013
Author(s)
Lindsay J. LeBlanc, Matthew Beeler, Karina Jimenez-Garcia, Abigail R. Perry, Seiji Sugawa, Ross Williams, Ian B. Spielman
Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation's unification of quantum mechanics and special relativity. Though the oscillatory motion's large

NBTI: Why Won't This Thing Go Away?

October 19, 2009
Author(s)
Jason P. Campbell
The negative-bias temperature instability (NBTI) is a reliability problem that, in the last ten years, has risen from relative obscurity to become the most important reliability problem in advanced pMOSFET devices. Even though a significant effort has been
Displaying 1551 - 1575 of 7107
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