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Displaying 4301 - 4325 of 7112

Transient Analysis of a Line-focus Transducer Probing a Liquid/Solid Interface

January 1, 1995
Author(s)
Nelson N. Hsu, Gerald V. Blessing, Steven E. Fick, D Xiang
The use of a line-focus transducer operating in pulse-echo mode to probe a liquid/solid interface is a new technique which has many engineering applications. To provide a theoretical basis for multi-echo analysis and interpretation, we use numerical

Certification of Standard Reference Material(R) 1955a Homocysteine in Frozen Human Serum

June 21, 2024
Author(s)
Carolyn Burdette, Elena Wood, Jerome Mulloor, Michael Nelson, Blaza Toman, Aaron Urbas
Standard Reference Material (SRM) 1955a Homocysteine in Frozen Human Serum is intended for use in validating homocysteine measurement procedures used by in vitro diagnostics manufacturers, reference laboratories, and clinical laboratories in the United

Simplified algorithms for adaptive experiment design in parameter estimation

November 1, 2022
Author(s)
Robert D. McMichael, Sean Blakley
In experiments to estimate parameters of a parametric model, Bayesian experiment design allows measurement settings to be chosen based on utility, i.e. the predicted improvement of parameter distributions due to modeled measurement results. In this paper

Parameter Estimation and Uncertainty Evaluation in a Low Rician K-Factor Reverberation-Chamber Environment

October 15, 2014
Author(s)
Chih-Ming Wang, Catherine A. Remley, Ansgar T. Kirk, Ryan J. Pirkl, Christopher L. Holloway, Dylan F. Williams, Paul D. Hale
In this paper we study statistical methods for estimating the Rician K-factor when this parameter is small. A fiducial approach for making statistical inference on the K-factor is discussed. The approach requires a Monte Carlo method to compute the

Tumor volume measurement errors RECIST studied with realistic tumor models

May 16, 2011
Author(s)
Benjamin R. Galloway, Adele Peskin, Zachary H. Levine
RECIST (Response Evaluation Criteria in Solid Tumors) is a linear measure intended to predict tumor volume in medical computed tomography (CT). In this work, using purely geometrical considerations, we estimate how well RECIST can predict the volume of

Economics of Measurement Uncertainty and Tolerances

July 1, 2009
Author(s)
Steven D. Phillips, J.M. Baldwin, William T. Estler
Productivity is considered by considering Cobb-Douglas production function and focusing on total factor productivity (TFP). We argue that developed economies like the United States need to develop TFP by utilizing advances in computation power and insights

Systems Engineering in the Product Lifecycle

May 1, 2005
Author(s)
Conrad E. Bock
This article introduces basic elements of systems engineering that are useful in managing the product lifecycle, as expressed in an extension to the Unified Modeling Language. Models are described for product requirements in textual and computable form

Virtual Testing of Ready-Mixed Concrete

January 1, 2004
Author(s)
Jeffrey W. Bullard
The development of a virtual testing system is no small task. It requires fundamental scientific research into the physics, chemistry, and materials science of concrete. The Virtual Cement and Concrete Testing Laboratory consortium has identified three

Atomic Spectral Tables for the Chandra X-Ray Observatory, Part I (S VIIl - S XIV)

July 1, 2003
Author(s)
Larissa Podobedova, Arlene Musgrove, Daniel E. Kelleher, Joseph Reader, Wolfgang L. Wiese
Tables of critically compiled wavelengths, energy levels, line classifications, and transition probabilities are given for spectra of ionized sulfur (S VIII - S XIV) in the region 21 to 170 . These tables provide data of interest for the Emission Line

Mass Absorption Coefficient of Tungsten and Tantalum

September 1, 2002
Author(s)
Zachary H. Levine
Web page for the Computational Material Science Network(administered at U. Washington) based on the following WERB-approvedmanuscripts:Z.~H.~Levine, S.~Grantham, C.~Tarrio,D.~J.~Paterson, I.~McNulty, T.~M.~Levin,A.~L.~Ankudinov, and J.~J.~Rehr,``Mass

Recommendation for Block Cipher Modes of Operation Methods and Techniques

December 1, 2001
Author(s)
Morris J. Dworkin
This recommendation defines five confidentiality modes of operation for use with an underlying symmetric key block cipher algorithm: Electronic Codebook (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), Output Feedback (OFB), and Counter (CTR)

ENABLING TRACEABILITY IN AGRI-FOOD SUPPLY CHAINS USING AN ONTOLOGICAL APPROACH

November 3, 2020
Author(s)
Evan K. Wallace, Farhad Ameri, Reid Yoder
Traceability of food products to their sources is critical for quick responses to a food emergency. US law now requires stakeholders in the agri-food supply chain to support traceabil-ity by tracking food materials they acquire and sell. However, having

Accelerating Defect Predictions in Semiconductors Using Graph Neural Networks

March 27, 2024
Author(s)
Md. Habibur Rahman, Prince Gollapalli, Panayotis Manganaris, Satyesh Kumar Yadav, Ghanshyam Pilania, Arun Kumar Mannodi-Kanakkithodi, Brian DeCost, Kamal Choudhary
First principles computations reliably predict the energetics of point defects in semiconductors, but are constrained by the expense of using large supercells and advanced levels of theory. Machine learning models trained on computational data, especially

Certification of Standard Reference Material(R) 2890a Water in 1-Octanol

January 8, 2026
Author(s)
Brian Lang, Jacolin Murray, Adam Pintar
Standard Reference Material (SRM) 2890a Water in 1-Octanol is intended for use in validating methods and calibrating instruments for the measurement of trace concentration levels of water. SRM 2890a is a solution of water in 1-octanol which is certified

Certification of Standard Reference Material(R) 915c Calcium Carbonate

September 20, 2022
Author(s)
Thomas W. Vetter, Jason Waters, Adam L. Pintar
Standard Reference Material (SRM) 915c Calcium Carbonate is certified as a chemical substance of known purity. It is intended for use in the calibration and standardization of procedures for calcium (Ca) determinations employed in clinical analysis and for

2p x-ray absorption spectroscopy of 3d transition metal systems

April 3, 2021
Author(s)
Eric L. Shirley, John Vinson, Frank de Groot, Hebatalla Elnaggar, Federica Frati, Ru-pan Wang, Mario Delgado, Michel van Veenendaal, Maurits Haverkort, Robert Green, Yaroslav Kvashnin, Atsushi Hariki, Harry Ramanantoanina, Claude Daul, Bernard Delley, Michael Odelius, Marcus Lundberg, Oliver Kuhn, Sergey Bokarev, Keith Gilmore, Mauro Stener, Giovanni Fronzoni, Piero Decleva, Peter Kruger, Marius Retegan, Javier Fernandez-Rodriguez, Gerritt van der Laan, Yves Joly, Christian Vorwerk, Claudia Draxl, John Rehr, Arata Tanaka, Hidekazu Ikeno
A variety of methods are presented that are presently used to treat x-ray absorption spectra of transition-metal 2p edges in a wide range of compounds. Different methods include different methods of chemical realism versus featuring the simplifications of

Geometry Entrapment in Walk-on-Subdomains

November 19, 2019
Author(s)
Walid Keyrouz, Preston Hamlin, W. J. Thrasher, Michael V. Mascagni
… One method of computing the electrostatic energy of a biomolecule in a …

Green Button: Building an Interoperable Ecosystem

November 25, 2014
Author(s)
Martin J. Burns, John A. Teeter, David A. Wollman
Our goal in the Green Button Initiative is to provide electricity customers with easy access to their energy usage data in a consumer-friendly and computer-friendly format, and to develop an interoperable ecosystem for utilities, manufacturers, and

Fire Safety Risks Associated with Leaks in Hydrogen Systems.

December 3, 2009
Author(s)
Jintao Zhang
Hydrogen presents several unusual fire hazards, including high leak propensity, ease of ignition, and invisible flames. This research concerns experiments, analysis, and computations to identify the hazards of leaks in hydrogen systems that could result in
Displaying 4301 - 4325 of 7112
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