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Search Publications

NIST Authors in Bold

Displaying 2551 - 2575 of 73697

SMET: Semantic Mapping of CVE to ATT&CK and its Application to Cyber Security

July 12, 2023
Author(s)
Abdeen Basel, Ehab Al-Sheer, Anoop Singhal, Latifur Khan, Kevin Hamlen
Cybercriminals relentlessly pursue vulnerabilities across cyberspace to exploit software, threatening the security of individuals, organizations, and governments. Although security teams strive to establish defense measures to thwart attackers, the

Measuring Firebrand Heat Flux with a Thin-Skin Calorimeter

July 11, 2023
Author(s)
Amy Mensch, Savannah Wessies, Anthony Hamins, Jiann C. Yang
While the impact of wildland-urban interface fires is growing, firebrand exposure is a significant but not well understood contributor to fire spread. The ignition threat of firebrand exposures can be characterized by measuring the heat transfer of glowing

Multi-mode Gaussian State Analysis with Total Photon Counting

July 11, 2023
Author(s)
Arik Avagyan, Scott Glancy, Emanuel Knill
The continuing improvement in the qualities of photon-number-resolving (PNR) detectors opens new possibilities for measuring quantum states of light. In this work we consider the question of what properties of an arbitrary multi-mode Gaussian state are

On the challenge of unambiguous identification of fentanyl analogs: exploring measurement diversity using standard reference mass spectral libraries

July 11, 2023
Author(s)
Arun Moorthy, Edward Erisman, Anthony J. Kearsley, Yuxue Liang, Edward Sisco, William E. Wallace
Fentanyl analogs are a class of designer drugs that are particularly challenging to unambiguously identify due to the mass spectral and retention time similarities of unique compounds. In this paper, we use agglomerative hierarchical clustering to explore

2023 NIST OWM S&T Analysis

July 7, 2023
Author(s)
Lisa Warfield, Loren Minnich, Jan Konijnenburg, Gloria Diane Lee, Juana Williams
The NIST OWM Analysis is submitted to assist the Weights and Measures community as it deliberates on items before the 2023 NCWM Annual Conference. NIST OWM offers these comments and recommendations based upon information and input available as of the date

Artificial Intelligence-Assisted Edge Computing for Wide Area Monitoring

July 7, 2023
Author(s)
Bin Hu, Hamid Gharavi
The massive digital information generated in conjunction with the ever-increasing phasor measurement data in the power grid has led to a tremendous constraint on the analysis and timely processing of real-time data. Under these conditions, leveraging

Coherent Laser Ranging of Deforming Objects in Fires at Sub-Millimeter Precision

July 7, 2023
Author(s)
Matthew Hoehler, Artur A. Chernovsky, Matthew Bundy, Esther Baumann
This paper applies coherent Frequency Modulated Continuous Wave Light Detection and Ranging to capture three-dimensional measurements of objects in fire at meters of stand-off distance. Despite the presence of flame depths up to 1.5 m obscuring the target

Fire Protection of Wood with an Environmentally Benign UV-Cured Polyelectrolyte Complex

July 7, 2023
Author(s)
Sarah Fisher, Danixa Rodriguez-Melendez, Ethan Iverson, Thomas Kolibaba, Jaime Grunlan
The use of wood in home and commercial structures has continued to grow in recent years, but its flammability poses a threat to lives and property. Previous attempts to flame retard wood have utilized harmful halogenated chemistries or required complex

2023 OWM Annual Analysis

July 6, 2023
Author(s)
John McGuire, Lisa Warfield
The NIST OWM Analysis is submitted to assist the Weights and Measures community as it deliberates on items before the Conference. NIST OWM offers these comments and recommendations based upon information and input available as of the date of this report.

A Data-Driven Approach to Complex Voxel Predictions in Grayscale Digital Light Processing Additive Manufacturing Using U-nets and Generative Adversarial Networks

July 6, 2023
Author(s)
Jason Killgore, Thomas Kolibaba, Benjamin Caplins, Callie Higgins, Jake Rezac
Machine learning models such as U-nets like the pix2pix conditional generative adversarial network (cGAN) are shown to predict 3D printed voxel geometry in digital light processing (DLP) additive manufacturing. The models are trained on microscopic voxel

Concentration of Ignitable Liquid Residue from Simulated Fire Debris by Dynamic Vapor Microextraction: Sensitivity to Instrument Settings and Debris Characteristics

July 6, 2023
Author(s)
Jennifer Berry, Mary Gregg, Amanda Koepke, Reta Newman, Kavita Jeerage
Dynamic vapor microextraction (DVME) is a potential method for the extraction and concentration of ignitable liquid (IL) residue in fire debris. This low flow rate, purge-and-trap headspace concentration method collects IL vapors onto a chilled adsorbent

Cylindrical Acoustic Gas Thermometry

July 6, 2023
Author(s)
Li Xing, X.J. Feng, Ming-Hao Si, Jintao Zhang, Hong Lin, Keith Gillis, Michael Moldover
We review recent determinations of the Boltzmann constant kB and the differences T-T90 that used cylindrical acoustic gas thermometry (c-AGT). These determinations measured the acoustic resonances frequencies of argon gas enclosed by metal-walled

Physical Models and Dimensional Traceability of 2.4 mm Coaxial Airline Standards for Determining Systematic Uncertainties of Calibrated Scattering-Parameters

July 6, 2023
Author(s)
Jeffrey Jargon, Dylan Williams, Angela Stelson, Chris Long, Aaron Hagerstrom, John R. Stoup, Eric S. Stanfield
In this report, we document the models and dimensional traceability of our 2.4 mm coaxial airline standards for performing multiline thru-reflect-line calibrations up to 50 GHz using vector network analyzers. We identify the equations used in our models of

Characterization of Die-Swell in Thermoplastic Material Extrusion

July 5, 2023
Author(s)
Austin Colon, David Kazmer, Amy Peterson, Jonathan Seppala
Die-swell is a flow effect that occurs in polymer extrusion whereby the material experiences rapid stress and dimensional changes upon exiting the nozzle orifice. Material extrusion additive manufacturing is no exception, and this effect influences the

Enhancement of Optical Absorption by Oxygen Plasma Treatment in Carbon Nanotube-based Black Paint Coating

July 5, 2023
Author(s)
Atasi Dan, Joel Rutkowski, Patrick McArdle, Erica Freire Antunes, Nathan Tomlin, Malcolm White, Michelle Stephens, John H. Lehman
Effect of oxygen (O2) plasma treatment on reflectance properties and surface morphology of CNT-based paint was investigated. We demonstrate a specular reflectance less than 0.10% and hemispherical reflectance less than 2.5% throughout the UV-Vis-NIR range.

High-resolution Melt Pool Thermal Imaging for Metals Additive Manufacturing Using the Two-color Method with a Single Color Camera

July 5, 2023
Author(s)
Alexander Myers, Guadalupe Quirarte, Francis Ogoke, Brandon Lane, Syed Uddin, Amir Barati Farimani, Jack Beuth, Jonathan Malen
We introduce an experimental method to image melt pool temperature with a single commercial color camera and compare the results with multi-physics computational fluid dynamic (CFD) models. This approach leverages the principle of two-color (i.e

Investigating the Cut-off Effect of n-alcohols on Lipid Movement: A Biophysical Study

July 5, 2023
Author(s)
Michael H. Nguyen, Dominik Dziura, Mitchell DiPasquale, Stuart R. Castillo, Elizabeth Kelley, Drew Marquardt
Cellular membranes are responsible for absorbing the effects of external perturbants for the cell's survival. Such perturbants include small ubiquitous molecules like n-alcohols which were observed to exhibit anesthetic capabilities, with this effect

Steady Melting in Material Extrusion Additive Manufacturing

July 5, 2023
Author(s)
Austin Colon, David Kazmer, Amy Peterson, Jonathan Seppala
Purpose One of the main causes of defects within material extrusion additive manufacturing is the non-isothermal condition in the hot end, which leads to inconsistent extrusion and weld healing. This work validates a custom hot end design intended to melt

Wideband Cyclostationary Spectrum Analysis for Smart Factory Wireless Channels

July 5, 2023
Author(s)
Peter Vouras, Mohamed Hany, Rick Candell
Smart and highly automated factories rely on time sensitive networks (TSNs) to coordinate the actions of robots working together to complete a task. The dense layout of metallic objects on the factory floor creates a complex electromagnetic environment

Analyzing Cybersecurity Definitions for Non-experts

July 4, 2023
Author(s)
Lorenzo Neil, Julie Haney, Kerrianne Buchanan
There is no standard definition for cybersecurity, with current definitions often being technically-complex and targeted at practitioners and academics. However, non-experts (those who do not have security expertise) need an understandable definition to
Displaying 2551 - 2575 of 73697
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