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1044 results found

Bluetooth Low Energy (BLE) Received Signal Strength Indicator (RSSI) Data for Proximity Detection in COVID-19 Electronic Contact Tracing

Data provided by  National Institute of Standards and Technology

NIST carried out a comprehensive BLE RSI data collection campaign under various operational scenarios. In some scenarios, the transmitting and receiving BLE radios were in line-of-sight (LOS) or each other and in others they were in non-line-of-sight (NLOS). The distance between the radios were measured and recorded in each scenario. in NLOS scenarios, data was collected were walls made of different construction materials were blocking the direct path from the transmitter to the receiver.

Tags: Bluetooth Low Energy (BLE); COVID-19; Distance Estimation; Electronic Contact Tracing; Exposure Notification; Infectious Diseases; Pandemics; Path Loss Models; Proximity Detection; Received Signal Strength Indicator (RSSI); Receiver Operating Characteristic (ROC) Curve; Smartphones; Viterbi Algorithm; Wearable Devices,

Modified: 2024-02-22

Views: 0

Data used in writing "Nanoscale bending dynamics in mixed-chain lipid membranes"

Data provided by  National Institute of Standards and Technology

The files include dynamic light scattering (DLS), small angle neutron scattering (SANS), and neutron spin echo spectroscopy (NSE) data that were analyzed in writing the manuscript. The SANS data were collected on the NGB30 SANS and NG3 vSANS instruments at the NIST Center for Neutron Research (NCNR) and have been reduced to absolute intensity using standard procedures. The NSE data were collected on the NGA NSE instrument at the NCNR and have been corrected for the instrument resolution and solvent signal.

Tags: lipid vesicles,small angle neutron scattering (SANS),dynamic light scattering (DLS),neutron spin echo spectroscopy (NSE),membrane fluctuations,

Modified: 2024-02-22

Views: 0

Mosaic Standards Challenge

Data provided by  National Institute of Standards and Technology

This repository contains all submissions made to the Mosaic Standards challenge from the period of the challenge opening through December 31st, 2019. The Mosaic Standards Challenge asked the microbiome research community to participate in determining the level of variation due to wet-lab protocols by sequencing a set of samples and providing the resulting files. Each participant ordered one or more kits, where each kit contained five fecal samples and two predetermined DNA mixtures.

Tags: microbiome; methodology; metagenomic sequencing;,

Modified: 2024-02-22

Views: 0

Trojan Detection Software Challenge - image-classification-sep2022-train

Data provided by  National Institute of Standards and Technology

Round 11 Train DatasetThis is the training data used to create and evaluate trojan detection software solutions. This data, generated at NIST, consists of image classification AIs trained on synthetic image data build from Cityscapes. A known percentage of these trained AI models have been poisoned with a known trigger which induces incorrect behavior. This data will be used to develop software solutions for detecting which trained AI models have been poisoned via embedded triggers. This dataset consists of 288 AI models using a small set of model architectures.

Tags: Trojan Detection; Artificial Intelligence; AI; Machine Learning; Adversarial Machine Learning;,

Modified: 2024-02-22

Views: 0

Phase-Resolved Rydberg Atom Field Sensing using Quantum Interferometry

Data provided by  National Institute of Standards and Technology

Although Rydberg atom-based electric field sensing provides key advantages over traditional antenna-based detection, it remains limited by the need for a local oscillator (LO) for low-field and phase resolved detection. In this work, we demonstrate the general applicability of closed-loop quantum interferometric schemes for Rydberg field sensing, which eliminate the need for an LO. We reveal that the quantum-interferometrically defined phase and frequency of our scheme provides an internal reference that enables LO-free full 360 degree-resolved phase sensitivity.

Tags: Rydberg atoms,atomic physics,receivers,fields strength,electric field,volts/meter,

Modified: 2024-02-22

Views: 0

Generator Fleet Characteristics Model

Data provided by  National Institute of Standards and Technology

When run, the GFCM creates tabular and graphical data of the hourly operating status and market outcomes for the generators that make up the electric generating fleet.

Tags: Economics; Electricity; Generator Fleet; Infrastructure; Interoperability; Operations; Power Systems; Resilience; Smart Grid; Synchronous Inertia.,

Modified: 2024-02-22

Views: 0

Data for the article " Pseudo-resonant Detection of `Low Frequency' VHF Electric Fields via Rabi Matching with Autler-Townes Splitting in Rydberg Atoms"

Data provided by  National Institute of Standards and Technology

This dataset represents absorption/transmission spectra of resonant probe light power through a Rydberg atom vapor, subject to a simultaneous dressing field and a 'low frequency' field. Data is taken as an oscilloscope average of 5 photodiode voltage traces, with frequency offsets given by a simultaneous reference cell (not included). Some data are given as 2-D arrays, with axes of laser detuning across a waterfall of field strength. Some data represents theory eigen-energies of the system, for comparison. This paper will be submitted to Physical Review Letters.

Tags: Rydberg atoms,atomic physics,receivers,fields strength,electric field,volts/meter,

Modified: 2024-02-22

Views: 0

Data for "On-grid compressive sampling for spherical field measurements in acoustics" in The Journal of the Acoustical Society of America.

Data provided by  National Institute of Standards and Technology

This dataset contains CSV files for the figures in the paper titled "On-grid compressive sampling for spherical field measurements in acoustics" in The Journal of the Acoustical Society of America. In this paper, we derive a compressive sampling method for spherical harmonic/spherical wavefunction or Wigner D-function series with sparse coefficients. Applications of these sparse expansions include spherical field measurements in acoustics and spherical near-field antenna measurements, to name a couple.

Tags: compressive sensing,compressive sampling,sparse signal processing,far-field pattern,near-field pattern,antenna characterization,Wigner D-functions,spherical harmonics,acoustic fields;,

Modified: 2024-02-22

Views: 0

Gas phase fractionation data independent acquisition analysis of a phosphopeptide mixture

Data provided by  National Institute of Standards and Technology

Recent advances in methodology have made phosphopeptide analysis a tractable problem for many proteomicists. There are now a wide variety of robust and inexpensive enrichment strategies to generate phosphoproteomes, while free or inexpensive software tools for quantitation and site localization have simplified phosphoproteome analysis workflow tremendously.

Tags: gas phase fractionation,phosphopeptides,post-translational modification localization,

Modified: 2024-02-22

Views: 0

Optically Distributing Remote Two-node Microwave Entanglement using Doubly Parametric Quantum Transducers

Data provided by  National Institute of Standards and Technology

Data presented is part of the journal manuscript "Optically Distributing Remote Two-node Microwave Entanglement using Doubly Parametric Quantum Transducers." Data includes graphical plots generated from numerical models and computations for various network topologies which illustrate their thresholds for achieving quantum information transfer.

Tags: quantum networks,Quantum computing,superconducting,transduction,squeezed state,entanglement,

Modified: 2024-02-22

Views: 0