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Search Publications

NIST Authors in Bold

Displaying 4401 - 4425 of 73697

NIST Time and Frequency Bulletin

March 17, 2022
Author(s)
Kelsey Rodriguez
The Time and Frequency Bulletin provides information on performance of time scales and a variety of broadcasts (and related information) to users of the NIST services.

Laser Spectroscopy of the y7PJo states of Cr I

March 16, 2022
Author(s)
Eric Norrgard, Daniel Barker, Stephen Eckel, Sergey Porsev, Charles Cheung, Mikhail Kozlov, Ilya Tupitsyn, Marianna Safronova
Here we report measured and calculated values of decay rates of the 3d$^4$($^5$D)4s4p($^3$P$^\rmo}}$)\ y$^7$P$^\rmo}}_2,3,4}$ states of Cr I. The decay rates are measured using time-correlated single photon counting with roughly 1\,\% total uncertainty. In

Protecting Information and System Integrity in Industrial Control System Environments: Cybersecurity for the Manufacturing Sector

March 16, 2022
Author(s)
Michael Powell, Michael Pease, Keith A. Stouffer, CheeYee Tang, Timothy Zimmerman, Chelsea Dean, Kangmin Zheng, John Hoyt, Mary Raguso, Joseph Brule, Aslam Sherule, Matthew Zopf
Today's manufacturing organizations rely on industrial control systems (ICS) to conduct their operations. Increasingly, ICS are facing more frequent, sophisticated cyber attacks—making manufacturing the second-most-targeted industry. Cyber attacks against

Are 2D Interfaces Really Flat?

March 15, 2022
Author(s)
Zhihui Cheng, Huairuo Zhang, Son Le, Hattan Abuzaid, Guoqing Li, Yifei Yu, Albert Davydov, Linyou Cao, Aaron Franklin, Curt A. Richter
Two-dimensional (2D) materials are amenable to external mechanical deformation and thus forming bubbles and wrinkles. However, little is known about the dynamics of 2D interfaces, especially their flatness under different conditions. Here we use cross

Assessing Enhanced Security Requirements for Controlled Unclassified Information

March 15, 2022
Author(s)
Ronald S. Ross, Victoria Yan Pillitteri, Kelley L. Dempsey
The protection of Controlled Unclassified Information (CUI) in nonfederal systems and organizations is important to federal agencies and can directly impact the ability of the Federal Government to successfully carry out its assigned missions and business

Quantifying Receiver Nonlinearities in VNA Measurements for the WR-15 Waveguide Band

March 15, 2022
Author(s)
Angela Stelson, Aaron Hagerstrom, Jeffrey Jargon, Chris Long
Scattering (S-) parameters are fundamental to numerous microwave quantities including antenna factors, microwave power, and phase. The uncertainty in S-parameter measurements is influenced by the test setup, including instrument noise, drift, position of

The Path to Consensus on Artificial Intelligence Assurance

March 15, 2022
Author(s)
Laura Freeman, Feras Batarseh, D. Richard Kuhn, M S Raunak, Raghu N. Kacker
Widescale adoption of intelligent algorithms requires that Artificial Intelligence (AI) engineers provide assurances that an algorithm will perform as intended. Providing such guarantees involves quantifying capabilities and the associated risks across

Topological Phase Transition and Charge-Spin Coupling in the Kagome Metal YMn 6 Sn 6

March 15, 2022
Author(s)
Peter E. Siegfried, Hari Bhandari, David C. Jones, Madhav P. Ghimire, Rebecca Dally, Lekh Poudel, Markus Bleuel, Jeffrey Lynn, Igor I. Mazin, Nirmal J. Ghimire
The Fermi surface (FS) is essential for understanding the properties of metals. It can change under both conventional symmetry-breaking phase transitions and Lifshitz transitions (LTs), where the FS, but not the crystal symmetry, changes abruptly. Magnetic

Towards a Standard for Identifying and Managing Bias in Artificial Intelligence

March 15, 2022
Author(s)
Reva Schwartz, Apostol Vassilev, Kristen K. Greene, Lori Perine, Andrew Burt, Patrick Hall
As individuals and communities interact in and with an environment that is increasingly virtual they are often vulnerable to the commodification of their digital exhaust. Concepts and behavior that are ambiguous in nature are captured in this environment

Business context-based approach for Digital Twin services integration

March 14, 2022
Author(s)
Elena Jelisic, Marija Jankovic, Nenad Ivezic, Boonserm Kulvatunyou, Dionysios Kehagias, Zoran Marjanovic
Digital Twins (DTs) are among the most popular and quickly evolving technologies, particularly within Industry 4.0. The rapid expansion of a new generation of information technologies, such as the Internet of Things (IoT), artificial intelligence (AI), and

Electrochemically Assaying Dopamine with p-Doped Silicon Nanowires

March 14, 2022
Author(s)
Nawaraj Karki, Albert Davydov, Sergiy Krylyuk, Charles Chusuei
Neuroblastoma, a pediatric cancer, is characterized by high urinary excretion of dopamine (DA). Silicon nanowires (SiNWs), which are nontoxic and known to resist surface fouling in biological samples, were investigated for practical use as working

Lambda-enhanced gray molasses in a tetrahedral laser beam geometry

March 14, 2022
Author(s)
Daniel Barker, Eric Norrgard, Nikolai Klimov, James A. Fedchak, Julia Scherschligt, Stephen Eckel
We report observation of sub-Doppler cooling of lithium using an irregular-tetrahedral laser beam arrangement, which is produced by a nanofabricated diffraction grating. We are able to capture 11(2) % of the lithium atoms from a grating magneto-optical

New Ways to Get to High Ground

March 14, 2022
Author(s)
Jennifer Helgeson, Jia Li
Benefit-cost analysis for sustainability and resilience planning needs new tools to proactively meet community needs and ensure that projects are successful.
Displaying 4401 - 4425 of 73697
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