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Search Publications

NIST Authors in Bold

Displaying 10526 - 10550 of 13225

Formalizing and Reasoning about Supply Chain Contracts between Agents

January 8, 2023
Author(s)
Dylan Flynn, Chasity Nadeau, Jeannine Shantz, Marcello Balduccini, Tran Son, Edward Griffor
… Inspired by the recent problems in supply chains, we propose an approach to declarative … that the agent is concerned about, which are modeled in accordance with the CPS Framework proposed by the National Institute of Standards and Technology. We discuss how common questions related to the …

NIST Traveling Tunable Laser Projector (TTLP) for UV-Blue Disinfection Dose Determinations

June 21, 2022
Author(s)
Thomas C. Larason, Steven Grantham, Clarence Zarobila, Yuqin Zong, C Cameron Miller, Michael Schuit, Brian Holland, Stewart Wood, Melissa Krause
… As COVID-19 was overtaking the world in the spring of 2020, the National Institute of Standards and Technology began collaborating with the National Biodefense … of the laser and projection system and its performance in the Biosafety Level 3 (BSL-3) laboratory are given. The …

STEM-in-SEM: A Re-Emerging Material Measurement Approach

June 1, 2022
Author(s)
Bob R. Keller, Benjamin Caplins, Jason Holm
… Scanning transmission electron microscopy performed in a scanning electron microscope (STEM-in-SEM) is undergoing a striking resurgence, with continuing … a wide range of materials in diverse areas of science and technology. This approach to material measurements provides …

A three-cornered hat analysis of instabilities in two-way and GPS carrier phase time transfer systems.

May 18, 2022
Author(s)
Tom Parker, Victor Zhang, Jian Yao, Gerard Petit, Roger Brown, James Hanssen
… (USNO) and the National Institute of Standards and Technology (NIST). These include (1) a direct Two-Way … transfer instabilities beyond one day are roughly flicker in nature and generally range between 40 and 120 ps. … A three-cornered hat analysis of instabilities in two-way and GPS carrier phase time transfer systems. …

SCAP Composer User Guide

May 16, 2022
Author(s)
Joshua Lubell
… application from the National Institute of Standards and Technology (NIST) for creating Security Content Automation … of which must be valid with respect to a schema defined in an SCAP component specification. SCAP Composer's limited … an open source publishing engine for content authored in the Darwin Information Typing Architecture (DITA). SCAP …

Initial study of the distributed cavity phase shift for the new microwave cavities of NIST F1

December 21, 2021
Author(s)
Gregory Hoth, Bijunath Patla, Neil Ashby, Vladislav Gerginov
… We are in the process of re-evaluating NIST-F1, the cesium fountain … standard at the National Institute of Standards and Technology (NIST). Here, we describe an initial study of the … bias caused by the distributed cavity phase (DCP) in NIST-F1 using the techniques developed by Li and Gibble …

Status Report on the Second Round of the NIST Lightweight Cryptography Standardization Process

July 20, 2021
Author(s)
Meltem Sonmez Turan, Kerry McKay, Donghoon Chang, Cagdas Calik, Lawrence E. Bassham, Jinkeon Kang, John M. Kelsey
… The National Institute of Standards and Technology (NIST) is in the process of selecting one or more authenticated … environments through a public, competition-like process. In February 2019, 57 candidates were submitted to NIST for …

Identifications of extreme ultraviolet spectra of Br-like to Ni-like neodymium ions using an electronbeam ion trap

April 30, 2021
Author(s)
C. Suzuki, Dipti Goyal, Y. Yang, A. Gall, Roshani Silwal, S. Sanders, Aung S. Naing, Joseph N. Tan, Endre A. Takacs, Yuri Ralchenko
… of open N-shell neodymium (Nd) ions have been recorded in an electron beam ion trap facility at the National Institute of Standards and Technology. The measurements have been performed for nominal electron beam energies in the range of 0.90 keV to 2.31 keV. The measured spectra …

Promising Practices for Equitable Hiring: Guidance for NIST Laboratories

April 28, 2021
Author(s)
Elizabeth Hoffman, Heather Evans
… a diverse workforce, explicit steps should be taken in hiring practices. The best practices described in this report provide a roadmap for Hiring Managers, whether … of this report is on practices that target the science, technology, engineering, and math (STEM) workforce at NIST, …

A Comprehensive Analysis on Multicast and Unicast Performance and Selection

April 14, 2021
Author(s)
Chen Shen, Chunmei Liu, Richard A. Rouil
… LTE Multicast Broadcast Single Frequency Network (MBSFN) technology, we analyze the impact of Multiple Input Multiple … Output (MIMO) on unicast, which plays an important role in LTE, and the impacts of corresponding multiple antenna … kind with such considerations. The observed performance in MBSFN deployment is carefully examined and clarified. The …

Encounter Metrics and Exposure Notification

March 28, 2021
Author(s)
Rene Peralta, Angela Robinson
… discuss the measurement of aggregate levels of encounters in a population, a concept we call encounter metrics. … to particular environments. We outline a system for use in the context of a workplace such as the National Institute of Standards and Technology (NIST). …

A Data-Driven Framework for Team Formation for Maintenance Tasks

February 16, 2021
Author(s)
Maya Reslan, Emily Hastings, Michael Brundage, Thurston Sexton
… it is still a heavily human-driven domain; multiple steps in the maintenance workflow still require human expertise and … teams. Having the correct assortment of individuals both in terms of skills and management experience can help improve …

Off-stoichiometric semiconductors Cu1.33+xZn1.33-xIn1.33Se4 (x = 0, 0.1, 0.2 and 0.3): Synthesis, structure, and thermal and electrical properties

January 12, 2021
Author(s)
Alzahrani Noha, Hagen Poddig, Hsin Wang, Joshua Martin, Wencong Shi, Lilia M. Woods, George S. Nolas
… materials. First principles calculations are also reported in establishing a fundamental investigation that illustrates the large variation in stoichiometry that is possible in these materials. This stoichiometric variation results in …

Superconducting nanowire single-photon detectors with 98% system detection efficiency at 1550 nm

November 23, 2020
Author(s)
Dileep Venkatarama Reddy, Robert R. Nerem, Sae Woo Nam, Richard Mirin, Varun Verma
… nanowire single-photon detectors (SNSPDs) are an enabling technology for a myriad of quantum-optics experiments that … an all-dielectric layered stack and fiber coupling package in order to achieve 98.0 +/- 0.5% SDE for single-mode-fiber … a smaller bound on the scattering and absorption losses in such systems and opens the use of SNSPDs for multi-photon …

Confinement of an alkaline-earth element in a grating magneto-optical trap

October 15, 2020
Author(s)
Ananya Sitaram, Peter Elgee, Gretchen K. Campbell, Daniel Barker, Nikolai Klimov, Stephen Eckel
… broad 1S0 to 1P1 transition of strontium, forms the MOT in combination with three diffracted beams from the grating … of the heated, effusive source on the background pressure in the trapping region. The system has a total volume of … Confinement of an alkaline-earth element in a grating magneto-optical trap …

Design and Engineering Colloidal Magnetic Particles for Nanoscale Thermometry

September 2, 2020
Author(s)
Adam J. Biacchi, Thinh Q. Bui, Cindi L. Dennis, Solomon I. Woods, Angela R. Hight Walker
… based on magnetic nanoparticles (MNPs) is an emerging technology that allows for remote temperature measurements … insufficient magneto-thermosensitivity for practical use in applications near room temperature. Here we present …

Aggregating Atomic Clocks for Time-Stamping

August 3, 2020
Author(s)
Temur Saidkhodjaev, Jeff Voas, D. Richard Kuhn, Joanna DeFranco, Phil Laplante
… A timestamp is a critical component in many applications, such as proof of transaction ordering … was developed at the National Institute of Standards and Technology (NIST) for use in algorithms where timestamp accuracy is critical. VT is an …

Coherent Optical Clock Down-Conversion for Microwave Frequencies with 10-18 Instability

May 22, 2020
Author(s)
Takuma Nakamura, Josue Davila-Rodriguez, Holly Leopardi, Jeffrey Sherman, Tara Fortier, Xiaojun Xie, Joe C. Campbell, Will McGrew, Xiaogang Zhang, Youssef Hassan, Daniele Nicolodi, Kyle Beloy, Andrew Ludlow, Scott Diddams, Franklyn Quinlan
… an absolute fractional frequency stability of 1×10-18 in the electronic domain. Such faithful reproduction of the … clock phase expands the opportunities for optical clocks in both technologically and scientifically for time- …

Security Analysis of First Responder Mobile and Wearable Devices

May 11, 2020
Author(s)
Joshua M. Franklin, Gema Howell, Scott Ledgerwood, Jaydee Griffith
Public safety practitioners utilizing the forthcoming Nationwide Public Safety Broadband Network (NPSBN) will have smartphones, tablets and wearables at their disposal. Although these devices should enable first responders to complete their missions, any

Quantifying Fluorogenic Dye Hydration in an Epoxy Resin by Non-Contact Microwave Dielectric Spectroscopy

March 12, 2020
Author(s)
Sindhu Seethamraju, Jan Obrzut, Jack F. Douglas, Jeremiah Woodcock, Jeffrey W. Gilman
… Rhodamine B dye as a sensor of local water content in dye-modified epoxy resins, where these measurements were … measurements to estimate the dye-water association ratio in the material. In particular, the water sensitive fluorogenic dye was … Quantifying Fluorogenic Dye Hydration in an Epoxy Resin by Non-Contact Microwave Dielectric …

NIST Big Data Interoperability Framework: Volume 2, Big Data Taxonomies

November 18, 2019
Author(s)
Wo L. Chang, Nancy Grady
… Data is a term used to describe the large amount of data in the networked, digitized, sensor-laden, information-driven … of data is outpacing scientific and technological advances in data analytics. To advance progress in Big Data, the NIST Big Data Public Working Group (NBD-PWG) …
Displaying 10526 - 10550 of 13225
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