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Displaying 4451 - 4475 of 7112

Large-Scale Metrology - An Update

January 1, 2002
Author(s)
William T. Estler, K L. Edmundson, G Peggs, D H. Parker
Developments in large-scale engineering metrology since the 1978 report of Puttock are reviewed. Advances in optical technology and fast, low-cost computation have led to wide-spread use of laser trackers and digital photogrammetry for general-purpose

Large Eddy Simulation of Wood Combustion

September 19, 2001
Author(s)
Simo A. Hostikka, Kevin B. McGrattan
The purpose of this work is to study the coupling of the one-dimensional pyrolysis model to the computational fluid dynamics model for fire simulation. The large eddy simulation of the gas phase flow is combined with the combustion model using flame sheet

Simulation and Visualization Using a Remote Database

February 1, 2001
Author(s)
Michael Iuliano
The NAMT program is currently underway at the National Institute of Standards and Technology (NIST). The NAMT was initiated by the Manufacturing Engineering Laboratory (MEL) to enable and accelerate the development of standards related to the

A Fast Algorithm for Determining the Gaussian Filter Mean Line in Surface Metrology

January 1, 2000
Author(s)
Y B. Yuan, X F. Qiang, Jun-Feng Song, Theodore V. Vorburger
A fast algorithm for assessing the Gaussian filtered mean line was deduced using the central limit theorem and an approximation method. This algorithm only uses simple computer operations such as addition, subtraction and digit shifting, and avoids

Evaluation of Complex Fire Models (NISTIR 6030)

June 1, 1997
Author(s)
Richard D. Peacock, Paul A. Reneke, Walter W. Jones
Several methods for studying predictive capability and sensitivity have been applied to fire models, but with limited utility. These range from explicit evaluation of the equations used in simple models such as ASET to evaluation of complex models from

Viscometer for low frequency, low shear rate measurements

August 1, 1986
Author(s)
Robert F. Berg, Michael R. Moldover
We describe a torsion-oscillator viscometer whose low frequency ( 0.5 Hz) and very low shear rate (0.05 s-1) are required for measurements of shear sensitive fluids such as microemulsions, polymer melts and solutions gels, and liquid mixtures near critical

Integrating Multiple HLA Federations for Effective Simulation-Based Evaluations of CPS

June 28, 2022
Author(s)
Thomas Roth, Wenqi Guo, Chenli Wang, Himanshu Neema, Anirban Bhattacharjee
Cyber-Physical Systems (CPS) are complex systems of computational, physical, and human components integrated to achieve some function over one or more networks. The use of distributed simulation, or co-simulation, is one method often used to analyze the

Anomalous Normal Fluid Response in Chiral Superconductor UTe 2

May 10, 2021
Author(s)
Seokjin Bae, Hyunsoo Kim, Yun S. Eo, Nicholas Butch, Sheng Ran
A chiral superconductor has been proposed as one pathway to realize topological quantum computation utilizing the predicted Majorana normal fluid at its boundary1 1-4 (i.e., a point, edge, or surface). The search for experimental realizations has led to

Intermediate Scattering Functions of a Rigid Body Monoclonal Antibody Protein in Solution Studied by Dissipative Particle Dynamic Simulation

April 8, 2021
Author(s)
Yanqin Zhai, Nicos Martys, William L. George, Joseph E. Curtis, Jannatun Nayem, Y. Z, Yun Liu
In the past decade, there is increased research interest in studying internal motions of flexible proteins in solution using Neutron Spin Echo (NSE) as NSE can simultaneously probe the dynamics at the length and time scale comparable to protein domain

Atomic-scale control of tunneling in donor-based devices

May 11, 2020
Author(s)
Xiqiao Wang, Jonathan E. Wyrick, Ranjit V. Kashid, Pradeep N. Namboodiri, Scott W. Schmucker, Andrew Murphy, Michael D. Stewart, Richard M. Silver
… a promising candidate for scalable solid- state quantum computing. Atomically precise design and implementation of … of the tunnel coupling necessary for solid-state quantum computing and analog quantum simulation. …

Historical Review of the Metered Section Area for Guarded Hot Plates

December 31, 2019
Author(s)
Robert R. Zarr, Stacy M. Bruss, David McElroy
Results of an extensive literature review and investigation of the metered section area for the guarded-hot-plate method, standardized as ASTM C177, Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means

CYBER-PHYSICAL SYSTEM DEVELOPMENT ENVIRONMENT FOR ENERGY APPLICATIONS

June 28, 2017
Author(s)
Thomas P. Roth, Yuyin Song, Martin J. Burns, Himanshu Neema, William Emfinger, Janos Sztipanovits
Cyber-physical systems (CPS) are smart systems that consist of highly interconnected networks of physical and computational components. The tight integration of a wide range of heterogeneous components enables new functionality and quality of life

Predicting low-temperature free energy landscapes with flat-histogram Monte Carlo methods

February 21, 2017
Author(s)
Nathan Mahynski, Marco A. Blanco Medina, Jeffrey R. Errington, Vincent K. Shen
We present a method of predicting the free energy landscape of fluids at low temperatures from flat-histogram grand canonical Monte Carlo simulations performed at higher ones. We illustrate our approach for both pure and multicomponent systems using two

Gas-Phase Interactions of Phosphorus Containing Compounds with Cup-Burner Diffusion Flames

September 20, 2016
Author(s)
Gregory T. Linteris, Fumiaki Takahashi, Viswanath R. Katta, Valeri I. Babushok
The effects of phosphorus-containing compounds (PCC) on the extinguishment and structure of methane-air coflow diffusion flames, in the cup-burner configuration, have been studied computationally. Dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP

The 2015 TWSTFT calibration for UTC and related time links

April 4, 2016
Author(s)
Zhiheng Jiang, Dirk Piester, Christian Schlunegger, Erik Dierks, Javier Galindo, Demetrios Matsakis, Victor S. Zhang
Two-Way Satellite Time and Frequency Transfer (TWSTFT or TW) is one of the primary time transfer techniques for UTC generation. Although it has expensive financial requirements it provides highly accurate calibration, and provides both robustness and

The IAPWS Industrial Formulation for the Thermodynamic Properties of Seawater

July 29, 2015
Author(s)
Allan H. Harvey, H J. Kretzschmar, Rainer Feistel, Wolfgang Wagner, Kiyoshi Miyagawa, J R. Cooper, Michael Hiegemann, Francisco L. Blangetti, Konstantin A. Orlov, I Weber, Anurag Singh, Sebastian Herrmann
… states such as vapor-brine and brine-ice (sea ice). The computing speeds for these calculations are faster than those …

The 3-D Shape of Blasted and Crushed Rocks: From 20 ?m to 38 mm

August 3, 2011
Author(s)
Edward J. Garboczi, Michael Taylor, Xuefeng Liu
Granodiorite material from a rock quarry in California was prepared by first quarrying large boulders, and then crushing down to smaller sizes. A range of particle sizes, from 0.0175 mm to 45.1 mm, was scanned using X-ray computed tomography (X-ray CT) and
Displaying 4451 - 4475 of 7112
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