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Search Publications

NIST Authors in Bold

Displaying 6251 - 6275 of 74371

Securing Manufacturing Industrial Control Systems: Behavioral Anomaly Detection

July 16, 2020
Author(s)
Michael P. Powell, James J. McCarthy, CheeYee Tang, Keith Stouffer, Timothy Zimmerman, William C. Barker, Titilayo Ogunyale, Devin M. Wynne
Industrial control systems (ICS) are used in many industries to monitor and control physical processes. As ICS continue to adopt commercially available information technology (IT) to promote corporate business systems' connectivity and remote access

Using Operando Techniques to Understand and Design Alkaline Membrane Fuel Cells with Excellent Performance and Long Operational Stability

July 16, 2020
Author(s)
Xiong Peng, Devashish Kulkarni, Ying Huang, Travis J. Omasta, Benjamin Ng, Yiwei Zheng, Lianqin Wang, Jacob LaManna, Daniel S. Hussey, John R. Varcoe, Iryna V. Zenyuk, William E. Mustain
Operando neutron imaging and operando micro X-ray computed tomography were used to understand the water dynamics of AEMFCs under various operating conditions, and this new fundamental information was used to create electrodes that not only enabled high

Capillary RheoSANS: Measuring the Rheology and Nanostructure of Complex Fluids at High Shear Rates

July 15, 2020
Author(s)
Ryan P Murphy, Zachary W. Riedel, Marshall A. Nakatani, Paul Salipante, Javen S. Weston, Steven D. Hudson, Kathleen M Weigandt
Complex fluids containing micelles, proteins, polymers and inorganic nanoparticles are often processed and used in high shear environments that can lead to structural changes at the nanoscale. Here, capillary rheometery is combined with small-angle neutron

Decade(s) of Development in Forensic Science

July 15, 2020
Author(s)
John Butler
On November 12, 2019, at a special anniversary conference entitled "Forensic Science: A Decade of Developments" held at the American Association for the Advancement of Science (AAAS), I provided an overview of developments across the forensic science

Metrological Tools for the Reference Materials and Reference Instruments of the NIST Material Measurement Laboratory

July 15, 2020
Author(s)
Carlos R. Beauchamp, Johanna Camara, Jennifer Carney, Steven J. Choquette, Kenneth D. Cole, Paul C. DeRose, David L. Duewer, Michael Epstein, Margaret C. Kline, Katrice Lippa, Enrico Lucon, Karen W. Phinney, Maria Polakoski, Antonio Possolo, Katherine E. Sharpless, John R. Sieber, Blaza Toman, Michael R. Winchester, Donald Windover
The National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards, was established by the U.S. Congress in 1901 and charged with establishing a measurement foundation to facilitate U.S. and international commerce. NIST

NIST Media Forensic Challenge (MFC) Evaluation 2020 - 4th Year DARPA MediFor PI meeting

July 15, 2020
Author(s)
Jonathan G. Fiscus, Haiying Guan, Yooyoung Lee, Amy Yates, Andrew Delgado, Daniel F. Zhou, Timothee N. Kheyrkhah, Xiongnan Jin
The presentation slides summarize NIST Media Forensic Challenge (MFC) Evaluation, and present MFC20 evaluation reports in DARPA MediFor PI meeting. The slides contains five parts: Overview, Image Tasks, Video Tasks, Camera ID Verification Tasks, Provenance

Spinal Helical Actuation Patterns for Locomotion in Soft Robots

July 15, 2020
Author(s)
Jennifer C. Case, James Gibert, Joran Booth, Vytas SunSpiral, Rebecca Kramer-Bottiglio
Spinal-driven locomotion was first hypothesized to exist in biological systems in the 1980's; however, only recently has the concept been applied to legged robots. In implementing spinal-driven locomotion in robots to-date, researchers have focused on

The UCEF Approach to Tool Integration for HLA Co-Simulations

July 15, 2020
Author(s)
Thomas P. Roth, Christopher W. Lemieux, Martin J. Burns
Cyber-Physical Systems (CPS) are complex systems that require expertise from multiple domains in their design, implementation, and validation. One cost-effective technique for validation of CPS is the integration of two or more domain-specific simulators

Consistency in Monte Carlo Uncertainty Analyses

July 14, 2020
Author(s)
Benjamin F. Jamroz, Dylan F. Williams
The Monte Carlo method is an established tool that is often used to evaluate the uncertainty of measurements. For computationally challenging problems, Monte Carlo uncertainty-analyses are typically distributed across multiple processes on a multi-node

Scientific AI in Materials Science: a Path to a Sustainable and Scalable Paradigm

July 14, 2020
Author(s)
Brian L. DeCost, Jason R. Hattrick-Simpers, Zachary T. Trautt, Aaron G. Kusne, Martin L. Green, Eva Campo
Recent years have seen an ever-increasing trend in the use of machine learning (ML) and artificial intelligence (AI) methods by the materials science, condensed matter physics, and chemistry communities. This perspective article identifies key scientific

The effect of strain on tunnel barrier height in silicon quantum devices

July 13, 2020
Author(s)
Ryan Stein, Michael Stewart
Semiconductor quantum dot (QD) devices experience a modulation of the band structure at the edge of lithographically defined gates due to mechanical strain. This modulation can play a prominent role in the device behavior at low temperatures, where QD

Classification of STR allelic variation using massively parallel sequencing and assessment of flanking region power

July 12, 2020
Author(s)
Laurence Devesse, Lucinda Davenport, Lisa Borsuk, Katherine Gettings, Gabriella Mason-Buck, Peter Vallone, David Ballard
The application of massively parallel sequencing (MPS) to forensic genetics has led to improvements in multiple aspects of DNA analysis, however, additional complexities are concurrently associated with these advances. In relation to short tandem repeat

A fast simple algorithm for computing the potential of charges on a line

July 10, 2020
Author(s)
Zydrunas Gimbutas, Nicholas F. Marshall, Vladimir Rokhlin
We present a fast method for evaluating expressions of the form $$ u_j = \sum_{i = 1,i \not = j}^n \frac{\alpha_i}{x_i - x_j}, \quad \text{for} \quad j = 1,\ldots,n, $$ where $\alpha_i$ are real numbers, and $x_i$ are points in a compact interval of $

Microresonator enhanced, waveguide coupled emission from silicon defect centers for superconducting optoelectronic networks

July 10, 2020
Author(s)
Alexander N. Tait, Sonia M. Buckley, Jeffrey M. Shainline, Adam N. McCaughan, Jeffrey T. Chiles, Sae Woo Nam, Richard P. Mirin
Superconducting optoelectronic networks could achieve scales unmatched in hardware-based neuromorphic computing. After summarizing recent progress in this area, we report new results in cryogenic silicon photonic light sources, components central to these

Microring resonator-coupled photoluminescence from silicon W centers

July 10, 2020
Author(s)
Alexander N. Tait, Sonia M. Buckley, Jeffrey T. Chiles, Adam N. McCaughan, Sae Woo Nam, Richard P. Mirin, Jeffrey M. Shainline
Defect centers are promising candidates for waveguide-integrated silicon light sources. We demonstrate microresonator- and waveguide-coupled photoluminescence from silicon W centers. Observations indicate that wavelengths that are on-resonance with

Role of Accumulation for Ignition of Fuel Beds by Firebrands

July 10, 2020
Author(s)
Samuel L. Manzello, Sayaka Suzuki
Large outdoor fires are one of the prominent fire problems in the world. Spot fires, caused by firebrands, are known as a key mechanism of rapid fire spread. Firebrands ignite unburned fuels far ahead of fire front. In large outdoor fires, firebrands are
Displaying 6251 - 6275 of 74371