Conferences

Mechanisms of Anelastic Loss in Langasite at Temperatures from 113 K to 1324 K

May 4, 2021

Author(s)

Ward L. Johnson, Yuriy Suhak, Holger Fritze

Synthetic piezoelectric crystals with the structure of langasite (LGS) are being pursued for resonant acoustic sensors that can operate at temperatures

Scaling of Mass and Force Using Electrical Metrology

May 3, 2021

Author(s)

Gordon Shaw

The impending redefinition of the International System of Units (SI) allows realization of the kilogram using electrical metrology. It can be shown that

Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake

May 3, 2021

Author(s)

Sandra Milev, David Goodwin, Siamak Sattar, Shafique Ahmed, Jovan Tatar

Externally bonded fiber-reinforced polymer (EBFRP) composites are a cost-effective material used for repairing and seismic retrofitting of existing concrete

Emerging Datasets and Analytics Opportunities in Metals Additive Manufacturing

April 30, 2021

Author(s)

Paul Witherell

Additive manufacturing (AM) technologies continue to mature, evolving into stalwarts of high- end production lines, particularly with metals AM. Technology

NIST on a Chip: Photonic and Quantum-Based Sensors for Measurements of Pressure, Vacuum, Temperature and Beyond!

April 29, 2021

Author(s)

Jay H. Hendricks, Zeeshan Ahmed, Daniel Barker, Stephen Eckel, James A. Fedchak, Nikolai Klimov, Julia Scherschligt

At the core of the NIST on a Chip (NoAC) program is the idea that measurement technology can be developed to enable metrology to be done "outside the National

Measurement Challenges for Spectrum Sensing in Communication Networks

April 27, 2021

Author(s)

Dan Kuester, Yao Ma, Dazhen Gu, Adam Wunderlich, Jason Coder, Joseph R. Mruk

We summarize a few key spectrum sensing measurement challenges and recent advances. Laboratory tests of sensing are complicated by their inseparable and often

CALIBRATION OF SPECTRORADIOMETERS USING TUNABLE LASERS

April 22, 2021

Author(s)

Yuqin Zong, Ping-Shine Shaw, Joseph Rice, C Cameron Miller

To shorten the long calibration chain when using the conventional source-based approach and therefore to reduce spectroradiometer's calibration uncertainty, we

STANDARD LEDS WITH SUPERIOR LONG-TERM STABILITY

April 22, 2021

Author(s)

Yuqin Zong, Weiqiang Zhao, C Cameron Miller

A large-chip standard LED with superior long-term stability have been developed at NIST. The standard LED uses a large, specialty die rated for 50 W but is

Depolarization in diffusely scattering media

April 22, 2021

Author(s)

Thomas A. Germer

We performed Mueller matrix Monte Carlo simulations of the propagation of optical radiation in diffusely scattering media for collimated incidence and report

Stray light characterization in a high-resolution imaging spectrometer designed for solar-induced fluorescence

April 22, 2021

Author(s)

David W. Allen, Loren Albert, James Kellner, Yuqin Zong, Katherine Cushman, Luis Alonso

New commercial-off-the-shelf imaging spectrometers promise the combination of high spatial and spectral resolution needed to retrieve solar induced fluorescence

Spatial frequency domain Mueller matrix imaging

April 22, 2021

Author(s)

Joseph Chue-Sang, Aaron Goldfain, Jeeseong C. Hwang, Thomas A. Germer

We combine Mueller matrix polarimetry (MMP) with spatial frequency domain imaging (SFDI) to create a technique that is sensitive to near-surface material

Recent research and development in photometry at NIST

April 22, 2021

Author(s)

Yuqin Zong, Maria Nadal, Benjamin K. Tsai, C Cameron Miller

Many developments were made in recent years in photometry at NIST for reducing measurement uncertainties, increasing calibration efficiencies, and adding

Wavelength calibration method for spectroradiometers with picometer uncertainties

April 22, 2021

Author(s)

Yuqin Zong

Accurate wavelength calibration of array spectroradiometers is critical to many applications. We developed a new method for calibration of array

A Historical and Statistical Study of the Software Vulnerability Landscape

April 18, 2021

Author(s)

Assane Gueye, Peter Mell

Understanding the landscape of software vulnerabilities is key for developing effective security solutions. Fortunately, the evaluation of vulnerability

Neutron Spin Rotation Measurements

April 15, 2021

Author(s)

Jeffrey S. Nico, Shannon Hoogerheide, Hans Pieter Mumm, Murad Sarsour, J Amadio, Eamon Anderson, Libertad Barron-Palos, Bret Crawford, Chris Crawford, D. Esposito, Walter Fox, I Francis, J Fry, Chris Haddock, Adam Holley, Kirill Korsak, J Lieers, S Magers, M. Maldonado-Velazquez, D Mayorov, T Okudaira, C Paudel, S Santra, H.M. Shimizu, William M. Snow, A. Sprow, K. Steen, H E. Swanson, John Vanderwerp, P. A. Yergeau

The neutron spin rotation (NSR) collaboration used parity-violating spin rotation of transversely polarized neutrons transmitted through a 0.5 m liquid helium

A Comprehensive Analysis on Multicast and Unicast Performance and Selection

April 14, 2021

Author(s)

Chen Shen, Chunmei Liu, Richard A. Rouil

Multicast transmission has long been studied along with its evolved standards, but few work provides comprehensive comparisons to Long Term Evolution (LTE)

Combinatorial Testing Metrics for Machine Learning

April 12, 2021

Author(s)

Erin Lanus, Laura Freeman, D. Richard Kuhn, Raghu N. Kacker

This short paper defines a combinatorial coverage metric for comparing machine learning (ML) data sets and proposes the differences between data sets as a

Validating the quality of millimeter-wave images input to deep-learning-based threat detection systems

April 12, 2021

Author(s)

Jack L. Glover, Praful Gupta, Marius B. Facktor, Alan C. Bovik

Deep-learning-based automatic image decision systems are increasingly being relied on to interpret imagery that was previously only viewed and analyzed by

Improving Automated Insertion Task in Robotics by Reducing Registration Error

April 2, 2021

Author(s)

Geraldine S. Cheok, Marek Franaszek, Karl Van Wyk, Jeremy Marvel

A peg-in-hole operation is representative of common tasks performed in assembly lines by robots. It requires registration of the coordinate frame where a part

Leveraging Real Fluid Effects as a Tool for Power Flow Measurements in 4 K Cryocooler Regenerators

April 1, 2021

Author(s)

Ryan Snodgrass, Vincent Y. Kotsubo, Joel Ullom, Scott Backhaus

The real fluid properties of helium have a major impact on the thermodynamics of pulse tube and Gifford-McMahon cryocoolers operating below about 30 K. For

A Temperature Instability in 4 K Cryocooler Regenerators Caused by Real Fluid Properties

April 1, 2021

Author(s)

Ryan Snodgrass, Vincent Y. Kotsubo, Joel Ullom, Scott Backhaus

We report temperature profile measurements from a densely instrumented, commercial pulse tube refrigerator. Azimuthal temperature differences of 15 K were

Spectral Analysis of Line Edge and Line Width Roughness using Wavelets

April 1, 2021

Author(s)

Ndubuisi George Orji

Although line edge and line width roughness (LER/LWR) have been key metrology challenges over the last 15 years, the advent of extreme-ultraviolet lithography

A Machine Learning Based Scheme for Dynamic Spectrum Access

March 30, 2021

Author(s)

Anirudha Sahoo

In this paper, we present a machine learning (ML) based dynamic spectrum access (DSA) scheme which can be used in a system in which primary user (PU) spectrum

Compound flooding in eastern North Carolina: Understanding stakeholder perceptions and needs

March 29, 2021

Author(s)

Scott Curtis, Jamie Kruse, Anuradha Mukherji, Jennifer Helgeson, Kelley DePolt, Philip Van Wagoner, Ausmita Ghosh

While our scientific understanding of compound flood risk has made great strides in recent years, there is a lack of studies related to stakeholder awareness of

A Preliminary Study on Uncertainty of NB-IoT Measurements in Reverberation Chambers

March 28, 2021

Author(s)

Anouk Hubrechsen, Vincent T. Neylon, Kate Remley, Rob Jones, Rob Horansky, Laurens A. Bronckers

New protocols related to internet-of-things applications may introduce previously unnoticed measurement effects due to the narrowband nature of these protocols

The NIST Phish Scale: Method for rating human phishing detection difficulty

March 15, 2021

Author(s)

Shanee Dawkins, Jody Jacobs, Kristen K. Greene

Developed based on over 4 years of NIST phishing training data, the NIST Phish Scale is a DIY method for rating human phishing detection difficulty – key to

Optimizing optical precision of an image using curved focal plane technology

March 14, 2021

Author(s)

Sujay Swain, Sudhish Swain, Dianne L. Poster, Michael T. Postek

The quality of an image captured by the human eye is typically better than that obtained relative to artificial images created by cameras or telescopes. This is

A Framework for Developing Algorithms for Estimating Propagation Parameters from Measurements

March 5, 2021

Author(s)

Camillo Gentile, Jeanne Quimby

A framework is proposed for developing and evaluating algorithms for extracting multipath propagation components (MPCs) from measurements collected by sounders

pySCATMECH: A Python interface to the SCATMECH library of scattering codes

March 3, 2021

Author(s)

Thomas Germer

The first version of the SCATMECH polarized light scattering C++ class library released in 2000. This software provides a large number of models for Mueller

The Industrial Ontologies Foundry (IOF) perspectives

March 3, 2021

Author(s)

Mohamed H. Karray, Neil Otte, Rahul Rai, Farhad Ameri, Boonserm Kulvatunyou, Barry Smith, Dimitris Kiritsis, Chris Will, Rebecca Arista

In recent years there has been a number of promising technical and institutional developments regarding use of ontologies in industry. At the same time, however