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Search Publications

NIST Authors in Bold

Displaying 4476 - 4500 of 13217

A Characterization of OFDMA Uplink Activation for Industrial Applications

February 5, 2024
Author(s)
Karl Montgomery, Rick Candell
… Frequency Division Multiple Access (OFDMA) is triggered in commercial IEEE 802.11ax (Wi-Fi 6) access points for … It presents an overview of OFDMA and how it works in IEEE 802.11ax (Wi-Fi 6). Then, it provides the measurement … table shows what set of conditions activate OFDMA in the test environment. Of the two commercial access points …

Uncertainty Analysis of the Dual-Lift Use Case for the Industrial Wireless Testbed

October 2, 2023
Author(s)
Karl Montgomery, Rick Candell, Mohamed Hany
… method known as the Guide to the Expression of Uncertainty in Measurement (GUM) to calculate the uncertainty values for … loop. It is concluded that the measurement systems used in the dual-lift use case have relatively small uncertainty … values for the detection of latency perturbations in the real-time control application implemented on the …

Benchmarking for keyword extraction methodologies in maintenance work orders

September 24, 2018
Author(s)
Thurston B. Sexton, Michael P. Brundage, Melinda Hodkiewicz, Thomas Smoker
… system-level information, the underlying quality of data in MWO's often suffers from misspellings, domain-specific (or … and abbreviations. This prevents its immediate usage in analyses. Approaches to making this data computable --- by … spotting (or, extraction) has proven a valuable tool in reducing manual efforts while structuring data, by …

Editorial: Special Issue on Industrial Robot Agility

September 14, 2016
Author(s)
Craig I. Schlenoff, Stephen B. Balakirsky, Murad Kurwa
… both semantic and geometric information. Three colleagues in industry, academia, and government proposed a special … robotics, manufacturing, agility, assembly, knowledge representation …

Recommended practice for the representation of Component catalog data in ISO 10303-210:2014

April 13, 2015
Author(s)
Allison Barnard Feeney, Jamie Stori, Thomas R. Thurman, Kevin G. Brady
… for representing electronic component property data in accordance with ISO 10303-210:2014. It takes into account recent extensions to the EXPRESS schema in that standard and provides illustrations and examples of a … methodology for composing SI derived units commonly used in electronic component data sheets and catalogs. An example …

STEP File Analyzer User's Guide (Version 2)

April 25, 2014
Author(s)
Robert R. Lipman
… file. The spreadsheets simplify inspecting information in the STEP file at an entity and attribute level. STEP files … data exchange, interoperability, manufacturing, PMI, STEP …

The dynamics of chip formation in machining

January 1, 1997
Author(s)
Matthew A. Davies, Christopher J. Evans, Timothy J. Burns
… In this paper, we provide experimental, numerical and … chip formation is the result of a Hopf bifurcation in the material flow. We modify the conventional … as a thermomechanical feedback process, which is similar in many ways to an open chemical reactor … Chip Formation, Manufacturing Processes, Nonlinear dynamics …

Framework for XML Schema Naming and Design Rules Development Tools

July 9, 2009
Author(s)
Katherine C. Morris, Joshua Lubell, Salifou Sidi Malick
… Manufacturing industry is facing an enormous challenge today in trying to integrate a wide range of systems. The systems … as, the multitude of organizations and countries involved in the manufacture of their products. To address these needs …

Spintronics

September 20, 2016
Author(s)
Hideo Ohno, Mark D. Stiles, Bernard Dieny
… Scope: This special issue covers recent developments in spintronics, where the spin degree of freedom of electrons … We have witnessed a wide range of progress, particularly in the past 10 years, spanning topics from sensors for … to utilize the wasted heat energy; to topics involving technology that is early in development: voltage-control of …

Accurate Unsupervised Photon Counting from Transition Edge Sensor Signals

September 5, 2025
Author(s)
Nicolas Dalbec-Constant, Guillaume Thekkadath, Duncan England, Thomas Gerrits, Nicolas Quesada
… detectors fundamental for accessing quantum advantages in information processing, communication and metrology. We … within local structures, aiming to increase confidence in assigning photon numbers. Finally, we demonstrate the … Quantum Science and Technology …

Dynamical structure factor from weak measurements

June 25, 2025
Author(s)
Emine Altuntas, Rosaria Gabriella Lena, Stuart Flannigan, Ian Spielman, Andrew Daley
… Much of our knowledge of quantum systems is encapsulated in the expectation value of Hermitian operators, … Quantum Science and Technology …

Ratchet Loading and Multi-Ensemble Operation in an Optical Lattice Clock

August 8, 2024
Author(s)
Youssef Hassan, Takumi Kobayashi, Tobias Bothwell, Jacob Siegel, Benjamin Hunt, Kyle Beloy, Kurt Gibble, Tanner Grogan, Andrew Ludlow
… over the spatial distribution of ultra-cold atoms confined in an optical lattice. The control is facilitated through a … load an extended (5-mm) atomic sample with uniform density in an optical lattice clock, reducing atomic interactions and … Quantum Science and Technology …

Underestimation of Thermogenic Methane Emissions in New York City (New York City methane emissions: what are we missing?)

May 14, 2024
Author(s)
Joseph R. Pitt, Israel Lopez Coto, Anna Karion, Kristian D. Hajny, Jay M. Tomlin, Robert Kaeser, Thilina Jayarathne, Brian H. Stirm, Cody R. Floerchinger, Christopher P. Loughner, Roisin Commane, Conor K. Gately, Lucy R. Hutyra, Kevin R. Gurney, Geoffrey S. Roest, Jianming Liang, Sharon Gourdji, Kimberly Mueller, James Whetstone, Paul B. Shepson
… that methane emissions are underestimated by inventories in many US urban areas. This has important implications for … at the city, state, and national levels. Uncertainty in both the spatial distribution and sectoral allocation of … a factor of 2.3). This suggests that there remains a gap in our process-based understanding of urban methane emissions. …

Optical frequency division & pulse synchronization using a photonic-crystal microcomb injected chip-scale mode-locked laser

February 15, 2024
Author(s)
Chinmay Shirpurkar, Jizhao Zang, Ricardo Bustos-Ramirez, David Carlson, Travis Briles, Lawrence R. Trask, Srinivas V. Pericherla, Di Huang, Ashish Bhardwaj, Gloria E. Hoefler, Scott Papp, Peter J. Delfyett
… using a coupled optoelectronic oscillator loop resulting in an optical frequency division factor of 20. The repetition … Journal of Lightwave Technology …

Measurement of 100 nm Monodisperse Particles by Four Accurate Methods: Uncertainty and Traceability

February 12, 2024
Author(s)
George Mulholland, Kaleb Duelge, Vincent A. Hackley, Natalia Farkas, John A. Kramar, Keiji Takahata, Michael Zachariah, Hiromu Sakurai, Kensei Ehara
… the coagulation coefficient, and optical properties. In this study we compare the particle size of nominal 100 nm … reasons for the differences are discussed. The uncertainty in the EAB measurement has been reduced by accounting for the … properties. A reduced uncertainty would also be important in addressing the current differences between the 100 nm size …

Untargeted metabolomics analyses and contaminant chemistry of Dreissenid mussels at the Maumee River Area of Concern in the Great Lakes

November 22, 2023
Author(s)
Tracey Schock, Daniel Bearden, Fabio Casu, Michael Edwards, Annie Jacob, Edward Johnson, Amanda Bayless, Elena Legrand
… Mussel Watch Program to monitor environmental health. In this study, we aimed to investigate the health of the Dreissenid mussel in the Maumee River. In addition to the chemical body burden, we investigated the … Environmental Science and Technology … of Dreissenid mussels at the Maumee River Area of Concern in the Great Lakes …
Displaying 4476 - 4500 of 13217
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