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Displaying 1926 - 1950 of 143740

A Total Break of the 3WISE Digital Signature Scheme

October 9, 2023
Author(s)
Daniel Smith-Tone
A new batch of ''complete and proper'' digital signature schemes submissions has recently been published NIST as part of its process for establishing post-quantum cryptographic standards. This note communicates an attack on the 3WISE digital signature

Fundamental Equation of State for Fluid Tetrahydrofuran

October 9, 2023
Author(s)
Felix Fiedler, Joel Karog, Eric W. Lemmon, Monika Thol
An empirical equation of state in terms of the Helmholtz energy for tetrahydro- furan is presented. In the validity range from the triple-point temperature up to 550 K and pressures up to 600 MPa, the equation of state enables the calculation of all

Grain size in low loss superconducting Ta thin films on c-axis sapphire

October 9, 2023
Author(s)
Corey Rae McRae
In recent years, the implementation of thin-film Ta has led to improved coherence times in superconducting circuits. Efforts to further optimize this materials stack have become a focus of the materials for superconducting quantum computing subfield. It

NIST's Antenna Gain and Polarization Calibration Service Reinstatement

October 9, 2023
Author(s)
Josh Gordon, Benjamin Moser
After a five-year renovation of the National Institute of Standards and Technology (NIST) Boulder, CO, antenna measurement facility, the Antenna On-Axis Gain and Polarization Measurements Service SKU63100S was reinstated with the Bureau International des

Capture and Analysis of Traffic Traces on a Wide-Area NDN Testbed

October 8, 2023
Author(s)
Sankalpa Timilsina, Davide Pesavento, Junxiao Shi, Susmit Shannigrahi, Lotfi Benmohamed
High-quality network traffic measurements from realistic network deployments are crucial to analyze and better understand emerging network technologies for the purpose of maturing them. However, achieving this measurement goal for the Named Data Networking

Using Disaster Surveys to Model Business Interruption

October 8, 2023
Author(s)
Maria Watson, Yu Xiao, Jennifer Helgeson
Business interruption after disasters is an important metric for community resilience planning because has both economic and social consequences. Each additional day that a business is nonoperational further compounds lost revenue, wages, and lack of

Activation loop plasticity and active site coupling in the MAP kinase, ERK2

October 6, 2023
Author(s)
Laurel Pegram, Demian Riccardi, NATALIE AHN
Previous studies of the protein kinase, ERK2, using NMR and hydrogen-exchange measurements have shown changes in dynamics accompanying its activation by phosphorylation. However, knowledge about the conformational motions involved is incomplete. Here, we

Part Deflection Measurements of AM-Bench IN718 3D Build Artifacts

October 6, 2023
Author(s)
Maxwell Praniewicz, Jason Fox, Jared Tarr
One of the primary barriers for adoption of additive manufacturing (AM) had been the uncertainty in the performance of AM parts due to residual stresses/strains. The rapid melting and solidification which occurs during AM processes result in high residual

Thermal-hydraulic Assessment of the Proposed NIST Neutron Source Design

October 6, 2023
Author(s)
Anil Gurgen, Abdullah Weiss, Joy Shen
To replace the ageing reactor at the NIST Center for Neutron Research, a new reactor design is proposed, namely the NIST Neutron Source or NNS. The NNS will contain a light-water moderated and cooled core that would serve as a neutron source for a state-of

A quantum ruler for orbital magnetism in moire quantum matter

October 5, 2023
Author(s)
Marlou Slot, Yulia Maximenko, Paul M. Haney, Sungmin Kim, Daniel Walkup, Evgheni Strelcov, En-Min Shih, Dilek Yildiz, Steven R. Blankenship, Kenji Watanabe, Takashi Taniguchi, Yafis Barlas, Nikolai Zhitenev, Fereshte Ghahari Kermani, Joseph A. Stroscio
Topological properties that underlie the rich emergent phases of moiré quantum matter (MQM) result from the eigenstate geometry of the moiré Hamiltonian. The eigenstate geometry involves the Berry curvature and the less known quantum metric. Most studies

Multi-integral representations for Jacobi functions of the first and second kind

October 5, 2023
Author(s)
Howard Cohl, Roberto S. Costas-Santos
One may consider the generalization of Jacobi polynomials and the Jacobi func- tion of the second kind to a general function where the index is allowed to be a complex number instead of a non-negative integer. These functions are referred to as Jacobi func

Sensitivity Analysis of CO2 Concentrations as Ventilation Metrics

October 5, 2023
Author(s)
Oluwatobi Oke, Andrew K. Persily
An approach has previously been developed to estimate space-specific carbon dioxide (CO2) levels that can serve as metrics for the adequacy of outdoor ventilation rates. These metrics are based on the CO2 concentration expected in a space given its

Unintended consequences: Assessing thermo-mechanical changes in vinyl nitrile foam due to micro-computed X-ray tomographic imaging

October 5, 2023
Author(s)
Alexander Landauer, Zois Tsinas, Orion Kafka, Newell Moser, Jack Leigh Glover, Aaron M. Forster
Micro-computed X-ray tomography (μCT) is a volumetric imaging tool used to quantify the internal structure of materials. μCT imaging with mechanical testing (in situ μCT) helps visualize strain-induced structural changes and develop structure-property

The NIST Silicon Lattice Comparator Upgrade

October 3, 2023
Author(s)
Marcus Mendenhall, James Cline, Csilla Szabo-Foster, Albert Henins
The NIST Silicon lattice comparator has ben in service in various forms since the 1970s. It is capable of measuring the difference in lattice spacing between specimens of high-quality float-zone silicon to delta-d/d approximately 6e-9. It has recently

2022 OpenFAD Evaluation Plan (Open Fine-grained Activity Detection)

October 2, 2023
Author(s)
Yooyoung Lee, Jonathan Fiscus, Lukas Diduch, Jeffery Byrne
This document describes an evaluation of the 2022 Open Fine-grained Activity Detection (OpenFAD) challenge. The evaluation plan covers resources, task definitions, task conditions, file formats for system inputs and outputs, evaluation metrics, scoring

A Total Break of the Scrap Digital Signature Scheme

October 2, 2023
Author(s)
Daniel Smith-Tone
Recently a completely new post-quantum digital signature scheme was proposed using the so called ''scrap automorphisms''. The structure is inherently multivariate, but differs significantly from most of the multivariate literature in that it relies on

Fire Resilience of a Steel-Concrete Composite Floor System: Full Scale Experimental Evaluation for Influence of Slab Reinforcement and Unprotected Secondary Beam (Test #3)

October 2, 2023
Author(s)
Selvarajah Ramesh, Lisa Choe, Matthew Hoehler, Matthew Bundy, Rodney Bryant, Giovanni Di Cristina Torres, Brian Story, Anthony R. Chakalis, Artur A. Chernovsky, Philip Deardorff, Michael Selepak
The National Fire Research Laboratory at the National Institute of Standards and Technology conducted a series of large compartment fire tests to investigate the behavior and fire-induced failure mechanisms of full-scale composite floor assemblies with a
Displaying 1926 - 1950 of 143740
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