AndreaBozzo/ceres-open-data-index huggingface dataset:
Evaluation of Timers Related to ProSe-based UE-to-Network Relays

User Equipment (UE)-to-Network Relay functionality was introduced in Release 13 of the Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) to extend and improve user connectivity.  A UE connected to the network (relay UE) provides network access to another UE (remote UE) by establishing a direct one-to-one connection with it using the sidelink (SL) channels over the PC5 interface. The PC5 signaling is used for the establishment and maintenance of this direct connection, and different procedures and timers are linked to these processes.  We focus on evaluating the PC5 signaling protocol performance through system-level simulations to provide some insights on minimum timer values that may increase the probability of successfully establishing and maintaining the connection between a remote UE and a relay UE. This data is in multiple forms: - source .txt files that contains data based on network simulations in ns-3. - scripts .gnu files for processing the data and generating plots as shown in NIST Technical Note 2144. - readme file explaining the data and associated scripts. Each .txt file (starting with "DirectSecurityTrace") represents the cumulative distribution function (CDF) of the roundtrip time (RTT) for the security procedure (one set of message exchange: request/response) over ProSe for a specific sidelink period value (e.g. 40, 60, 80, ..., 320 ms). Each .txt file (starting with "DirectCommunicationTrace") represents the cumulative distribution function (CDF) of the roundtrip time (RTT) for direct link setup procedure (one request/response encapsulating another request/response) over ProSe for a specific sidelink period value (e.g. 40, 60, 80, ..., 320 ms). Each .txt file (starting with "DirectCommunicationTrace") represents the success probability of establishing a remote/relay connection for a specific sidelink period value (e.g. 40, 60, 80, ..., 320 ms). The rest of the .txt files (minvaluesfile.txt, avgvaluesfile.txt, maxvaluesfile.txt) includes results from the theoretical model in "Access Time Analysis of MCPTT Off-Network Mode over LTE" by Yishen Sunby Yishen Sun et al (https://doi.org/10.1155/2019/2729370): providing the minimum, maximum, and average values of the RTT over ProSe direct communication. Running the .gnu scripts generates the .eps figures (Fig. 3/4/5) included in NIST Technical Note 2144: They plot the corresponding RTT in function of time (ms) and sidelink period, and the corresponding success probability in function of the sidelink period.

Tags: d2d, device-to-device, public-safety-communication, wireless-communication
Organization: National Institute of Standards and Technology
In-Situ Captures of AWS-1 LTE

This data contains in-phase and quadrature waveforms of AWS-1 LTE uplink emissions collected at NASA Langley Research Center's Langley Research Antenna System. The collection campaign is part of the NASCTN effort on AWS-3 LTE impacts on Aeronautical Mobile Telemetry https://www.nist.gov/programs-projects/aws-3-lte-impacts-amt.  The work is detailed in the NTIA Technical Report TR-21-553 In-Situ Captures of AWS-1 LTE for Aeronautical Mobile Telemetry System Evaluation available at https://www.its.bldrdoc.gov/publications/details.aspx?pub=3262 . Additional pertinent details on recording parameter settings are outlined in the format provided in NTIA Technical Memo TM-21-553 available at https://www.its.bldrdoc.gov/publications/details.aspx?pub=3261 .

Tags: nasctn, receiver-testing, spectrum-sharing
Organization: National Institute of Standards and Technology
Baseline Deep Learning Detectors for Radar Detection in the 3.5 GHz CBRS Band

This project aims to create a comprehensive framework for generating radio frequency (RF) datasets, designing deep learning (DL) detectors, and evaluating their detection performance using both simulated and experimental test data. The proposed tools and techniques are developed in the context of dynamic spectrum use for the 3.5 GHz Citizens Broadband Radio Service (CBRS), but they can be utilized and expanded for standardization of machine learned spectrum awareness technologies and methods. This dataset consists of pre-trained DL models for radar detection in the CBRS band using simulated waveforms. The code for creating and using these models is available at https://github.com/usnistgov/BaselineDeepLearningRadarDetectors.

Tags: 3-5-ghz-cbrs-radar-detection-deep-learning-radio-frequency-signals-spectrum-mlsa
Organization: National Institute of Standards and Technology
Sample code and data for "Accurate localization microscopy by intrinsic aberration calibration"

Sample data and code for "Accurate localization microscopy by intrinsic aberration calibration", Craig R. Copeland, Craig D. McGray, B. Robert Ilic, Jon Geist, and Samuel M. Stavis, Nature Communications X, Y (2021). For use in MATLAB.

Tags: intrinsic-aberration, localization, mems, microscopy, particle-tracking
Organization: National Institute of Standards and Technology
Absolute 13C/12C Isotope Amount Ratio for Vienna Pee Dee Belemnite from Infrared Absorption Spectroscopy

Data set from peer-reviewed publication:  A. J. Fleisher et al., Absolute 13C/12C Isotope Amount Ratio for Vienna Pee Dee Belemnite from Infrared Absorption Spectroscopy, Nature Physics. Measurements of isotope ratios are predominantly made with reference to standard specimens that have been characterized in the past. In the 1950s, the carbon isotope ratio was referenced to a belemnite sample collected by Heinz Lowenstam and Harold Urey in South Carolina?s Pee Dee region. Due to the exhaustion of the sample since then, reference materials that are traceable to the origin artefact are used to define the Vienna Pee Dee Belemnite (VPDB) scale for stable carbon isotope analysis. However, these reference materials have also become exhausted or proven unstable over time, mirroring issues with the international prototype of the kilogram that led to a revised International System of Units. A campaign to elucidate the stable carbon isotope ratio of VPDB is underway, but independent measurement techniques are required to support it. Here we report an accurate value for the stable carbon isotope ratio inferred from infrared absorption spectroscopy, fulfilling the promise of this fundamentally accurate approach. Our results agree with a value recently derived from mass spectrometry, and therefore advance the prospects of SI-traceable isotope analysis. Further, our calibration-free method could improve mass balance calculations and enhance isotopic tracer studies in CO2 source apportionment.

Tags: carbon-dioxide, environment-and-climate, greenhouse-gases, marine-mammals, oceans, ph, remote-sensing, seabirds
Organization: National Institute of Standards and Technology
NIST/NIBIB Medical Imaging Phantom Lending Library

This database contains imaging and calibration data for phantoms contained in the NIST/NIBIB Phantom Lending Library (PLL). Description and access to the PLL can be found at https://www.nist.gov/programs-projects/nistnibib-medical-imaging-phantom-lending-library . Public analysis software written in Python can be found at https://github.com/MRIStandards/PhantomViewer . This database contains image sets from different scanners and different sites to be used for comparison and reference purposes. It is not meant to endorse any specific scanner or scan protocol.

Tags: biomarkers, medical-imaging, mri, phantoms
Organization: National Institute of Standards and Technology
Dataset from HDX-MS Studies of IgG1 Glycoforms and Their Interactions with the Fc(gamma)RIa (CD64) Receptor

This database gives hydrogen-deuterium exchange mass spectrometry (HDX-MS) data from measurements of three purified IgG1 glycoform samples, predominantly G0F, G2F, and SAF, in isolation and in complexation with the high-affinity receptor, Fc(gamma)RIa (CD64). The IgG1 antibody used in this study, aIL8hFc, is a murine-human chimeric IgG1, which inhibits IL-8 binding to human neutrophils. The working datasets comprise 17,750 deuterium uptake measurements in peptides from the receptor and the light and heavy chains of aIL8hFc obtained during 7 experiments, each comprising three runs of six exchange times. The data illuminate on the hydrogen exchange dynamics in isolated receptor, isolated IgG1 glycoforms, and receptor-IgG1 complexes.

Tags: antibody-receptor-interaction, chromatography, glycosylation, hdx-ms, hydrogen-deuterium-exchange, mass-spectrometry, monoclonal-antibody, peptide, precision, protein, proteolysis, proteomics, receptor
Organization: National Institute of Standards and Technology
Supporting scripts and datasets for manuscript "A modified Vegetation Photosynthesis and Respiration Model (VPRM) for the eastern USA and Canada, evaluated with comparison to atmospheric observations and other biospheric models"

Supporting scripts and datasets for Gourdji et al, JGR-B, 2021: "A modified Vegetation Photosynthesis and Respiration Model (VPRM) for the eastern USA and Canada, evaluated with comparison to atmospheric observations and other biospheric models"

Tags: biogenic-co2-flux-models, greenhouse-gas-measurements-and-models
Organization: National Institute of Standards and Technology
Electro-optic frequency combs for rapid interrogation in cavity optomechanics

Data for D. A. Long, B. J. Reschovsky, F. Zhou, Y. Bao, T. W. LeBrun, and J. J. Gorman, "Electro-optic frequency combs for rapid interrogation in cavity optomechanics," Optics Letters Vol. 46, Issue 3, pp. 645-648 (2021), https://doi.org/10.1364/OL.405299

Tags: accelerometry, optical-frequency-combs, optical-microcavities
Organization: National Institute of Standards and Technology
Characterizing LTE User Equipment Emissions Under Closed-Loop Power Control

This data is provided as a supplement to NIST Technical Note 2147, Characterizing LTE User Equipment Emissions Under Closed-Loop Power Control.  In particular, the data provided here is sufficient to reproduce all of the plots and analyses in Chapters 5 and 6, which present the data analysis results.  See the data description document provided in the zip file for an outline of the contents and the technical note referenced above for details on the data collection.

Tags: long-term-evolution-lte, wireless-communications
Organization: National Institute of Standards and Technology
Data for Multi-site, multi-platform comparison of magnetic resonance imaging (MRI) T1 measurement using the International Society of Magnetic Resonance in Medicine/National Institute of Standards and Technology (ISMRM/NIST) system phantom

Data for multi-site, multi-platform comparison of magnetic resonance imaging (MRI) T1 measurement using the International Society of Magnetic Resonance in Medicine/National Institute of Standards and Technology (ISMRM/NIST) system phantom. Includes data sets for T1 measurement by inversion recovery (IR) and variable flip angle (VFA) methods at 1.5 tesla and 3 tesla. At 1.5 T, data is from 2 different vendor systems, 9 total MRI machines. At 3 T, data is from 3 different vendor systems, 18 total MRI machines.

Tags: magnetic-resonance-imaging, mri, phantom, t1
Organization: National Institute of Standards and Technology
Calculated Diffusivities for Water Isotopologues in Carbon Dioxide, Nitrogen, and the Atmosphere of Mars, and for Methane Isotopologues in Nitrogen Representing the Atmosphere of Titan

Values are computed for the dilute-gas diffusivity of water isotopologues in N2, CO2, and their mixture at a composition representing the atmosphere of Mars, for standard conditions of 101.325 kPa and water mole fraction approaching zero. Values are similarly computed for the diffusivity of methane isotopologues in N2, representing the atmosphere of Titan. Calculations employ state-of-the-art intermolecular potentials and classical trajectory calculations as described in the paper by R. Hellmann and A.H. Harvey, "First-Principles Diffusivity Ratios for Atmospheric Isotope Fractionation on Mars and Titan", published in  Journal of Geophysical Research: Planets, 126, e2021JE006857 (2021), https://doi.org/10.1029/2021JE006857. Separate files are given for the diffusivities of H2O, HDO (where D is deuterium), and the 17-O and 18-O substitutions of H2O, and for the diffusivities in N2 of CH4, CH3D, and the 13-C substitution of CH4.

Tags: atmospheric-science, carbon-dioxide, diffusivity, isotopes, mars, methane, nitrogen, titan, water
Organization: National Institute of Standards and Technology
GAA-GAA Coexistence in the CBRS Band: Performance Evaluation of Approach 3

The General Authorized Access (GAA) users in the Citizens Broadband Radio Service (CBRS) band are the lowest priority users. They must cooperate with each other to minimize mutual interference and increase spectrum utilization. The Wireless Innovation Forum (WInnForum), a standardization body, has recommended three schemes to address this GAA-GAA coexistence issue.  This dataset contains the performance data obtained from simulation experiments run to evaluate the performance of the WInnForum scheme called "Approach 3".  Various performance graphs using this dataset has been published in the publication titled "GAA-GAA Coexistence in the CBRS Band: Performance Evaluation of Approach 3" which appeared in the IEEE Conference on Local Computer Networks (LCN) 2020.

Tags: 3-5-ghz, approach-3, cbrs, coexistence, gaa, winnforum
Organization: National Institute of Standards and Technology
Carbon Dioxide Mole Fraction Measurements and Model Output in the Northeast Corridor: Baltimore/Washington and Los Angeles Megacity for Jan-May 2018, Jan-May 2019, and Jan-May 2020.

Data files in this repository contain a static archive of all the observational and model data required to construct fossil-fuel enhancements at tower sites in Los Angeles (LA_data.csv) and DC-Baltimore (DCBalt_data.csv).  These were used in the analyses detailed and presented in the publication "The impact of COVID-19 on CO2 emissions in the Los Angeles and Washington DC/Baltimore metropolitan areas" by Yadav et al.

Tags: ghg-concentration-measurements, greenhouse-gas-measurements-and-models, urban-greenhouse-gas-domes
Organization: National Institute of Standards and Technology
precisionFDA Truth Challenge V2: Calling variants from short- and long-reads in difficult-to-map regions

The precisionFDA Truth Challenge V2 aimed to assess the state-of-the-art of variant calling in difficult-to-map regions and the Major Histocompatibility Complex (MHC). Starting with FASTQ files, 20 challenge participants applied their variant calling pipelines and submitted 64 variant callsets for one or more sequencing technologies (~35X Illumina, ~35X PacBio HiFi, and ~50X Oxford Nanopore Technologies). Submissions were evaluated following best practices for benchmarking small variants with the new GIAB benchmark sets and genome stratifications. Challenge submissions included a number of innovative methods for all three technologies, with graph-based and machine-learning methods scoring best for short-read and long-read datasets, respectively. New methods out-performed the 2016 Truth Challenge winners, and new machine-learning approaches combining multiple sequencing technologies performed particularly well. Recent developments in sequencing and variant calling have enabled benchmarking variants in challenging genomic regions, paving the way for the identification of previously unknown clinically relevant variants. This dataset includes the fastq files provided to participants, the submitted variant callset as vcfs, and the benchmarking results, along with challenge submission metadata.

Tags: benchmarking, bioinformatics, genome-in-a-bottle, precisionfda, variant-calling, whole-genome-sequencing
Organization: National Institute of Standards and Technology
Mapping of NIST Cybersecurity Framework Subcategories to Threat Scenarios from the National Electric Sector Cybersecurity Organization Resource (NESCOR) Electric Sector Failure Scenarios and Impact Analyses - Version 3.0

This document identifies the NIST Cybersecurity Framework Subcategories that map closely to the potential mitigations within Advanced Metering Infrastructure (AMI), Distributed Energy Resources (DER), and Distribution Grid Management (DGM) threat scenarios in the NESCOR document.  This mapping is useful in determining which NIST Cybersecurity Framework Subcategories are most relevant to addressing cyber risks in voltage regulation for the distribution system and is helpful in comparing DER and traditional grid environments.

Tags: advanced-metering-infrastructure, cybersecurity-framework, distributed-energy-resource, distribution-grid-management, distribution-system, smart-grid, subcategories, voltage-regulation
Organization: National Institute of Standards and Technology
PROperties of FIre Suppressant SYstems: "PROFISSY" - A Spreadsheet Application for Fire-Suppressant Bottle-Filling Calculations

This spreadsheet and accompanying files are the result of work performed for U.S. Army Ground Vehicle Systems Center by the National Institute of Standards and Technology (NIST), Applied Chemicals and Materials Division on the development of a computer program for fire-suppressant bottle-filling calculations under interagency agreement number 11478007. The work includes the development of an Excel spreadsheet that is to be used with the NIST23 (REFPROP) (that must be obtained separately at https://www.nist.gov/srd/refprop) to provide two bottle-filling calculations (1) given vessel size, mass of agent, mass of pressurizing agent, and filling temperature compute the filling pressure, and the temperature and pressure conditions at which the fluid in the vessel becomes single phase, and (2) given the vessel size, mass of agent, and filling temperature and pressure, compute the mass of pressurizing fluid, and the temperature and pressure conditions at which the fluid in the vessel becomes single phase. The agents include CF3I, R-218, R-125, R-227ea, R 13B1, R-236fa, HFE-7100, Novec 649 (also known as Novec 1230 and FK-5-1-12), R 1233zd(E), R-1336mzz(Z), and R1336-mzz(E). Two pressurizing agents are available, nitrogen and carbon dioxide. There also is an option to include solid sodium bicarbonate powder in the calculations, and the ability to generate tables of conditions in the vessel as a function of temperature summarized with simple graphics.

Tags: filling-pressure, fire-suppressant, refrigerant, vapor-liquid-equilibrium
Organization: National Institute of Standards and Technology
Dataset for Absorbance Microscopy for Quantitative and Traceable Trypan Blue Cell Viability Measurement

The use of the microscope to assess cell viability is an inherently qualitative and subjective process. This project demonstrates a new absorbance microscopy modality for quantitative single-cell assessment of cell viability via trypan blue staining. This dataset consists of .tif images of live and dead stained and unstained Jurkat cells as well as the numerical data related to the corresponding journal article. The images were collected via brightfield microscopy through a 610nm bandpass filter. The data were collected to demonstrate a new imaging modality that enables the collection of traceable and comparable images of cells over time on the same microscope or on different microscopes. The processing of the brightfield images into absorbance images allows the intracellular uptake of trypan blue measured as moles/cell or mmol/L to be determined for individual cells. In this way, measurements of cell viability can be made in a quantitative, reproducible fashion. Quantitative measurements of cell viability are greatly needed to improve consistency in the biomanufacturing of cells and cell-based therapeutics. Note about Downloading:  Please note that the pathlength for the download location must not exceed 260 characters; this is the pathlength limit in Windows.  If you experience an error message about pathlength, then you can create a shorter pathlength for the download. For example, you could create a folder on C drive named 000 (triple zero) which would sort to the top of the list and would be C:\000 (6 characters).  REFERENCE 1. Babakhanova G,  Zimmerman SM,  Pierce LT,  Sarkar S,  Schaub NJ, Simon Jr CG (2021) Quantitative, Traceable Determination of Cell Viability Using Absorbance Microscopy. Manuscript in preparation. 2. Babakhanova G, Zimmerman SM, Simon Jr CG (2021), Dataset for AbsorbanceQ App for Generating Absorbance Images from Brightfield Image Captures, National Institute of Standards and Technology, https://doi.org/10.18434/mds2-2423 (accessed June 22, 2021) 3. Zimmerman SM,  Simon Jr CG, Babakhanova G (2021) AbsorbanceQ App for Generating Absorbance Images from Brightfield Image Captures. Manuscript in preparation.

Tags: advanced-imaging, advanced-therapy, biomanufacturing, biotechnology, cell-therapy, cell-viability, regenerative-medicine, tissue-engineering
Organization: National Institute of Standards and Technology
On computing elastic registration of two simple curves in d-dimensional space and the elastic shape distance between them.

A software package for computing the elastic registration of two simple curves in d-dimensional space, d a positive integer, and therefore the elastic shape distance between them. The implementation of the package is in Matlab with the exception of the Dynamic Programming routine which is written in Fortran but is executed as a Matlab mex file. The Dataset includes all the routines in the package and some input data files.

Tags: dynamic-programming, elastic-shape-distance, fft, rotation-matrix, shape-analysis, singular-value-decomposition, trace
Organization: National Institute of Standards and Technology
Blind Calibration of Phase Drift in Millimeter-Wave Channel Sounders

Millimeter-wave channel sounders are much more sensitive to phase drift than their microwave counterparts by virtue of shorter wavelength. This matters when coherently combining untethered channel measurements ? scanned over multiple antennas either electronically or mechanically in seconds, minutes, or even hours ? to obtain directional information. To eliminate phase drift, a synchronization cable between the transmitter and receiver is required, limiting deployment range and flexibility indoors, and precluding most outdoor and mobile scenarios. Instead, we propose a blind technique to calibrate for phase drift by post-processing the channel measurements; the technique is referred to as blind because it requires no reference signal and, as such, works even in non-line-of-sight conditions when the (reference) direct path goes undetected. To substantiate the technique, it was tested on real measurements collected with our 60-GHz virtual phased-array channel sounder, as well as through simulation. The technique was demonstrated robust enough to deal with the most severe case of phase drift (uniformly distributed phase) and in non-line-of-sight conditions.

Tags: 5g, beamforming, clock-drift, mmwave, phase-coherence, phased-array-antennas
Organization: National Institute of Standards and Technology