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Search Publications

NIST Authors in Bold

Displaying 4951 - 4975 of 7112

Algorithm-Supervised Millimeter Wave Indoor Localization using Tiny Neural Networks

January 17, 2025
Author(s)
Anish Shastri, Steve Blandino, Camillo Gentile, Chiehping Lai, Paolo Casari
The quasi-optical propagation of mmw signals has been instrumental in designing high-accuracy localization algorithms. These algorithms either exploit the geometric properties of the mmw signals or are based on an environment's radio footprints, leading to

The Global and Local Structure of Medium-Scale Pool Fires

October 24, 2024
Author(s)
Kunhyuk Sung, Ryan Falkenstein-Smith, Matthew Bundy, Marco Fernandez, Anthony Hamins
A series of experiments are reported that characterize key features of the structure of eight medium-scale pool fires (0.3 m to 0. 4 m) burning a variety of liquid and gaseous fuel types, including 30 cm diameter liquid pool fires burning methanol, ethanol

Quantum coding with low-depth random circuits

September 24, 2021
Author(s)
Michael Gullans, David A. Huse, Stefan Krastanov, Liang Jiang, Steven T. Flammia
Random quantum circuits have played a central role in establishing the computational advantages of near-term quantum computers over their conventional counterparts. Here, we use ensembles of low-depth random circuits with local connectivity in D ≥ 1

pyLLE: a Fast and User Friendly Lugiato-Lefever Equation Solver

May 24, 2019
Author(s)
Gregory T. Moille, Qing Li, Xiyuan Lu, Kartik Srinivasan
The Lugiato-Lefever Equation (LLE), first developed to provide a description of spatial dissipative structures in optical systems, has recently made a significant impact in the integrated photonics community, where it has been adopted to help understand

Atomically precise device fabrication

December 7, 2016
Author(s)
Joseph A. Hagmann, Xiqiao Wang, Pradeep N. Namboodiri, Richard M. Silver, Curt A. Richter
… (CMOS) devices that power existing computing technology, which continue to scale down in size as … is an exciting avenue towards the pursuit of quantum computing architectures due to long spin-coherence3 and …

Methodology for Formulating Diesel Surrogate Fuels with Accurate Compositional, Ignition-Quality, and Volatility Characteristics

May 14, 2012
Author(s)
Charles J. Mueller, William J. Cannella, Thomas J. Bruno, Bruce Bunting, Heather Dettman, James A. Franz, Marcia L. Huber, Mani Natarajan, William J. Pitz, Matthew A. Ratcliff, Ken Wright
In this work a novel approach is developed to formulate surrogate fuels having characteristics that are representative of diesel fuels produced from real-world refinery streams. Because diesel fuels consist of hundreds of compounds, it is difficult to

Automated Clock Comparisons and Time Scale Generation in the SIM Region

April 21, 2012
Author(s)
Michael A. Lombardi, J. Mauricio Lopez-Romero, Nelida Diaz-Munoz
The second, the base unit of time interval in the International System, is defined in terms of the two hyperfine states of the Cesium atom ground energy level. This definition has so far served the metrology community well, and the uncertainty of the best

An Integrated Interactive Visualization and Analysis Environment to study the Impact of Fire on Building Structures

July 25, 2010
Author(s)
Dilip K. Banerjee, John L. Gross, Pradeep R. Gaddam, Thomas M. Olano, William J. Hess, Judith E. Terrill, Terence J. Griffin, John G. Hagedorn, John T. Kelso, Steven G. Satterfield
We have created an integrated interactive visualization and analysis environment, that can be used immersively or on the desktop, to study the interaction among fire, heat transfer, and structural deformation computed from three linked simulations. In this

Experiments and Modeling of Multiple Workstations Burning in a Compartment. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-5E)

September 1, 2005
Author(s)
Anthony P. Hamins, Alexander Maranghides, Kevin B. McGrattan, Thomas J. Ohlemiller, Robert Anleitner
A series of large-scale experiments were conducted in the National Institute of Standards and Technology (NIST) Large Fire Laboratory from November 4 to December 10, 2003, to assess the accuracy with which the NIST Fire Dynamics Simulator (FDS) predicts

Experiments and Modeling of Multiple Workstations Burning in a Compartment. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-5E) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
Anthony P. Hamins, Alexander Maranghides, Kevin B. McGrattan, Thomas J. Ohlemiller, Robert Anleitner
A series of large-scale experiments were conducted in the National Institute of Standards and Technology (NIST) Large Fire Laboratory from November 4 to December 10, 2003, to assess the accuracy with which the NIST Fire Dynamics Simulator (FDS) predicts

High-Temperature Guarded Hot Plate Apparatus Control of Edge Heat Loss

June 1, 2005
Author(s)
Daniel R. Flynn, William M. Healy, Robert R. Zarr
The guarded hot plate (GHP) apparatus is the most common type of absolute apparatus for measurement of the thermal transmission properties of thermal insulation. As the name implies, the hot meter plate is surrounded by a coplanar guard plate, separated by

Neighborhood-Scale Fire Spread

November 16, 2003
Author(s)
Ronald G. Rehm, D. D. Evans, William E. Mell, Simo A. Hostikka, Kevin B. McGrattan, Glenn P. Forney, Charles E. Bouldin, Elisa S. Baker
This paper describes development of a physics-based mathematical and computational model to predict fire spread among structures and natural fuels (trees, shrubs and ground litter). This tool will be used to understand how fires spread in a community where

Finite Element and Plate Theory Methods for Modeling Acoustic Emission Waveforms

October 1, 2002
Author(s)
W H. Prosser, Marvin A. Hamstad, John M. Gary, Agnes O'Gallagher
A comparison was made between two approaches to predict acoustic emission waveforms in thin plates. A normal mode solution method for Mindlin plate theory was used to predict the flexural plate mode response to a point source, step-function load, applied

Personal Authentication Through Biometric Technologies

January 1, 2002
Author(s)
Fernando L. Podio
¿¿¿Biometric authentication technologies such as face, finger, hand, iris, and speaker recognition are commercially available today and are already in use. Recent advances in reliability and performance and recent cost drops make these technologies

When Worlds Collide - Interactions Between the Virtual and the Real

February 1, 2001
Author(s)
Sanford P. Ressler, Brian Antonishek, Quandou (. Wang, Afzal A. Godil, Keith A. Stouffer
This paper explores issues surrounding interaction with virtual (computer generated) objects which are interfaced to real world devices. In addition a virtual room corresponding to a real physical room has been created to allow collaborative meetings with
Displaying 4951 - 4975 of 7112
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