AndreaBozzo/ceres-open-data-index huggingface dataset:
Differential Measurements of an AC Source with a Josephson Arbitrary Waveform Synthesizer

The abstract of the paper [1] is:This paper describes differential sampling measurements of an ac source and a Josephson arbitrary waveform synthesizer (JAWS).A new iterative approach for aligning the phases of the JAWS and the source waveforms was implemented to minimize the differential voltage at the digitizer. A type-A uncertainty of 45 nV/V after 10 min was measured for a commercial ac source at 1 V rms amplitude and 1 kHz.[1] "Differential Measurements of an AC Source with a Josephson Arbitrary Waveform Synthesizer"submitted to Conference on Precision Electromagnetic Measurements (CPEM) 2024; will be published and available on IEEE website at a later date.Data for figures 2 to 4 of the manuscript.Files included in this publication:   Fig 2 FFT of the digitizer signal.csv    Figure 2    Fig. 2. 1 kHz component of the FFT of the digitizer signal (amplitude and phase) for Delta_V1=Source-JAWS1 and Delta_V2=Source-JAWS2 over 3.5 hours    Five columns: The first column is the time (x-axis), the second column is the amplitude in volt of the first measured difference voltage (shown as black solid circle in Fig. 2),     the third column is the phase in degree of the first measured difference voltage (shown as black open circle in Fig. 2),    the fourth column is the amplitude in volt of the second measured difference voltage (shown as red solid circle in Fig. 2),    the fifth column is the phase in degree of the second measured difference voltage (shown as red open circle in Fig. 2).    Format: CSV  Fig 3 Source rms amplitude and environment data.csv    Figure 3    Fig. 3. Room environment conditions recorded (temperature, atmospheric pressure, and relative humidity) and Reconstructed rms amplitude for the source at 1 kHz.    Five columns: The first column is the time (x-axis), the second column is the reconstructed amplitude in volt - 1 V (shown as blue solid circle in Fig. 3 bottom),     the third column is the temperature in degree C (shown as orange solid square in Fig. 3 top),    the fourth column is the atomsepheric pressure in hecto Pascal  (shown as green open triangle in Fig. 3 top),    the fifth column is the relative humidity in percent (shown as puple open circle in Fig. 2).    Format: CSV  Fig 4 Allan variance.csv    Figure 4    Fig. 4. Allan deviation of the source amplitude measured at 1 V and 1 kHz.    Five columns: The first column is the time (x-axis), the second column is the calculated Allan Deviation in volt (shown as blue solid circle in Fig. 4),     the third column is the fit on the results, representing the white noise with slope -0.5 (shown as black dash line in Fig. 4),    the fourth column is the is the time (x-axis) for the 1/f noise floor plot and the fifth column is the 1/f noise floor (shown as a black solid line in Fig. 4)    Format: CSV

Tags: josephson-arrays, measurement-techniques, standards, superconducting-integrated-circuits, voltage-measurement
Organization: National Institute of Standards and Technology
Measuring VHF Detector Linearity using a Quantum-Based Source, CPEM 2024

Data sets for measuring VHF detector linearity using a Josephson Arbitrary Waveform Synthesizer (JAWS). Two instruments are measured: an RF power sensor and a fast ADC. The VHF-JAWS source consists of a chip with 12,810~Josephson junctions located in a cryocooler and driven to produce quantum-based ac waveforms at frequencies up to 50.05~MHz and power up to -19~dBm. We first confirm that the device is operating correctly by measuring the dc offset quantum-locking range (Fig. 2) and then measure the system output power with an RF power sensor (Fig. 3, bottom) and a high-speed digitizer (Fig. 3, top). After removing an overall scale factor, the ten-nanowatt scale differences between the programmed JAWS values and the measured values (Fig. 3, top and bottom) indicate better than $\pm$0.5~$\%$ DUT linearity for frequencies in the VHF band.

Tags: digital-analog-conversion, josephson-junction-arrays, power-measurement-standards, signal-synthesis, superconducting-integrated-circuits, superconducting-microwave-devices
Organization: National Institute of Standards and Technology
VHF Josephson Arbitrary Waveform Synthesizer, IEEE Transactions on Applied Superconductivity

These data will appear in [1]. The abstract for that paper is given below:We report on the design, fabrication, and measurement of a Very High Frequency band Josephson Arbitrary Waveform Synthesizer (VHF-JAWS) at frequencies from 1~kHz to 50.05~MHz. The VHF-JAWS chip is composed of a series array of 12,810 Josephson junctions (JJs) embedded in a superconducting coplanar waveguide. Each JJ responds to a pattern of current pulses by creating a corresponding pattern of voltage pulses, each with a time-integrated area related to fundamental constants as $	extit{	extbf{h/2e}}$. The pulse patterns are chosen to produce quantum-based single-tone voltage waveforms with an open-circuit voltage of 50~mV~rms (\mbox{-19.03~dBm} output power into 50~$\Omega$ load impedances) at frequencies up to 50.05~MHz, which is more than twice the voltage that has been generated by previous RF-JAWS designs at 1~GHz. The VHF-JAWS is "quantum-locked", that is, it generates one quantized output voltage pulse per input current pulse per JJ while varying the dc current through the JJ array by at least 0.4~mA and the amplitude of the bias pulses by at least 10~\%. We use the large bias pulse quantum-locking range to investigate one source of error in detail: the direct feedthrough of the current bias pulses into the DUT at VHF frequencies. We reduce this error by high-pass filtering the current bias pulses and measure the error as a function of input pulse amplitude using two techniques: by measuring small changes over the quantum-locking range and by passively attenuating the input pulse amplitude so that the nonlinear JJs no longer generate voltage pulses while the error is only linearly scaled.

Tags: digital-analog-conversion, josephson-junction-arrays, power-measurement-standards, signal-synthesis, superconducting-integrated-circuits, superconducting-microwave-devices
Organization: National Institute of Standards and Technology
On-Wafer Device Characterization Including Uncertainty Estimates to 1.0 THz

data published in paper "On-Wafer Device Characterization Including Uncertainty Estimates to 1.0 THz"This dataset contains the calibrated scattering parameters (S-parameters) of a thru that  was not used in calibration, and the simulated and calibrated S-parameters for series and shunt capacitors for both technology 1 and technology 2. It also contains the simulated and extracted capacitance from these S-parameters of the series and shunt capacitors. It contains the simulated and extracted capacitance for the shunt capacitor from one site in technology 1 and 95% prediction intervals (uncertainties) from electronic variation in the vector network analyzer (VNA), probe placement error, and the capacitance per unit length correction variation. Finally, it contains the extracted capacitance for multiple sites for the shunt capacitor in technology 1. All simulated S-parameters obtained using a 2.5D method of moments commercial solver. Simulated capacitance obtained from the simulated S-parameters.

Tags: calibration, coplanar-waveguide, indium-phosphide, monolithic-microwave-integrated-circuit, multiline-thru-reflect-line, on-wafer, s-parameters, terahertz, vector-network-analyzer
Organization: National Institute of Standards and Technology
Code to accompany "Superancillary Equations for the Multiparameter Equations of State in REFPROP 10.0"

This record includes the C++ files used to generate superancillary equations (sets of Chebyshev expansions for the co-existing thermodynamic data) for the multiparameter EOS included in NIST REFPROP 10.0. The calculations in C++ are done in extended precision and the Chebyshev expansions are stored in double precision. The python scripts are used to post-process the generated sets of Chebyshev expansions. The advantage of this methodology is that the phase equilibrium calculations can be entirely avoided, resulting a computational speedup on the order of a factor of hundreds of times, without sacrificing any accuracy,Additional information is available in the README file.The working code is at https://github.com/usnistgov/fastchebpure

Tags: chebyshev-expansions, equations-of-state, function-approximation, phase-equilibria
Organization: National Institute of Standards and Technology
Code for qDIC-based Strain Localization Analysis with Wavelets (Q-SLAW)

This dataset is an archival version of an algorithm implementation for strain localization analysis in digital image correlation data. The original application is to detect the occurrence of localization (i.e., collective buckling, hotspots, etc.) in uniaxial stress testing of polymer foams instrumented with 2D digital image correlation. The full-field strain maps are processed with a Marr wavelet and regions of excess strain are identified. These are used to compute an overall localization intensity factor with units of strain, which quantifies the degree of excess strain in localization regions above the nominal background. A Monte Carlo-like simulation mode is included in the scripts to provide validation for the metric. It is set up for using input data specifically from qDIC (https://github.com/FranckLab/qDIC) but could be straightforwardly adapted to other DIC output data. A run-script with example data from intermediate rate mechanical testing of an open-cell elastomeric foam is included. It consists of approximately 17 files using 188 MB of storage.

Tags: compaction-band, digital-image-correlation, foam, strain-localization
Organization: National Institute of Standards and Technology
Code for "An atomic boson sampler"

This package is a collection of scripts and methods for analyzing data from the Kaufman lab's experiment for boson sampling using atoms, tunneling in their optical lattice.Please read the paper [arXiv:2307.06936](https://doi.org/10.48550/arXiv.2307.06936) for context.The data included in the subdirectory ``Boson sampling data/`` consists of shots of the experiment, where the atoms are prepared in a particular pattern,then the atoms are allowed to tunnel, then the atom number parity is measured on each site.From this data, we estimate the clouding, full bunching, indistinguishability, and infer a part of the single particle unitary.

Tags: bosonsampling, quantum
Organization: National Institute of Standards and Technology
Dataset demonstrating feasibility of two-ladder sensing approach

Datasets included in manuscript on simultaneous two-ladder sensing, titled "Independent Rydberg Atom Sensing using a Dual-Ladder Scheme" to be submitted to Applied Physics Letters. The data for figure 1 contains experimental EIT traces for both ladders, and figure 2 contains the data for false-color plots showing the polarization-specific response of each ladder.

Tags: atomic-physics, electric-field, fields-strength, receivers, rydberg-atoms, volts-meter
Organization: National Institute of Standards and Technology
Stochastic Regression and Peak Delineation with Flow Cytometry Data

This data repository contains original files (fcs) of flow cytometry experiments. The data was used to demonstrate the use of stochastic regression to quantify subpopulations of cells that have distinctly different genome copies per cell within a heterogenous population of Escherichia coli (E. coli) cells.  This new approach gives estimates of signal and noise, the former of which is used for analysis, and the latter is used to quantify uncertainty. By separating these two components, the signal and noise can be compared independently to evaluate measurement quality across different experimental conditions. The files contain experiments from a single stock of Escherichia coli cells that was diluted to different concentrations, stained with Hoechst33342, and acquired on a CytoFLEX LX under the same acquisition conditions. ?Control_Hoechst? is a biologic control sample stained only with Hoechst. ?RainbowBeads? is a control of hard-dyed fluorescent beads with 8 distinct peaks of known fluorescent intensities per manufacturer documentation. ?Test_double? indicates test samples with double fluorescent probe staining, the fractional number (e.g. 0.7) indicates the dilution factor from the stock, and the integer at the end represents the technical replicate.The downloaded Exp__20230921_1_Cyto-A-journal.zip file contains 14 files in .fcs format, which requires suitable software to read/analyze data (i.e., FCS Express).

Tags: e-coli, flow-cytometry, genome-copy, hoechst-33342, stochastic-regression
Organization: National Institute of Standards and Technology
System-Level Evaluation of 5G NR UE-Based Relays

This data set corresponds to the results presented in the paper entitled "System-Level Evaluation of 5G NR UE-Based Relays", to appear in the proceeding of the 2023 IEEE Military Communications Conference.

Tags: 5g, nr, sidelink, simulation, system-level, ue-based-relays
Organization: National Institute of Standards and Technology
Characterization data on the effects of micro-computed tomography-based x-ray radiation on vinyl nitrile foam

This dataset contains information from investigating the effects of micro-computed tomographic imaging irradiation on vinyl nitrile foam and code for a finite element user material to model these effects. More details are available in the README.txt and data_summary.txt files in the main directory.Data in the repository includes exposure and dosage calibration files (.csv, .dat, .mat, .in, .png. .jpg), imaging data from optical microscopy (.tif, .zvi) and scanning electron microscopy with energy-dispersive spectroscopy (SEM EDS) (.tif, .png, .docx). Also included is characterization data from differential scanning calorimetry (DSC) with metadata (.tprc, .tseq), test data (.tri, .csv) and analysis metadata and data (.py, .m, .tri, .xls, .xlsx, .pdf), characterization results data via dynamic mechanical analysis (DMA) and stress relaxation (SR) with metadata (.tprc, .csv), test data (.tri, .csv) and analysis metadata and data (.py, .m, .tri, .xls, .xlsx, .pdf). Data from characterization via differential scanning calorimetry metadata (.tprc, .tseq), test data (.tri, .csv) and analysis metadata and data (.py, .m, .tri, .xls, .xlsx, .pdf). Data from characterization via Fourier transform infrared spectroscopy (FTIR) generates metadata (.spa, .csv, .exp), test data (.spa, .csv) and analysis metadata and data (.xls, .csv, .pdf), and data from Soxhlet extraction (.xlsx). Each test type includes textual descriptions (.txt) and/or photographs (typically .jpg) to aid in completeness, describe measurands and measurement uncertainties, and explain the file organization. A .zip file containing code for a calibrated finite element user material for mechanical model that includes radiation and temperature effects is also included in the main directory. Please contact the authors with any questions.This dataset consists of approximately 335 files that require ca. 605 MB of storage.

Tags: differential-scanning-calorimetry, dynamic-mechanical-analysis, foam, ftir, impact-protection, material-characterization, micro-computed-tomography, polymer-ageing, polymer-foam, radiation-damage, sem-eds, structure-properties, vinyl-nitrile, x-ray-modification, x-ray-processing
Organization: National Institute of Standards and Technology
High Angular Momentum Coupling for Enhanced Sensing in the VHF Band

Recent advances in Rydberg atom electrometry detail promising applications in radiofrequency (RF) communications. Presently, most applications use carrier frequencies greater than 1 GHz where resonant Autler-Townes splitting provides the highest antenna sensitivity. This letter documents a series of experiments with Rydberg atomic antennas to collect and process waveforms from the automated identification system (AIS) used in maritime navigation in the VHF band. This is difficult with conventional resonant Autler-Townes based Rydberg sensing.  Measurements were taken using electrically induced transparency (EIT) in rubidium and cesium vapor cells. We show the results from a newly published method called High Angular Momentum Matching Excited Raman (HAMMER) that enhances low frequency detection and exhibits superior sensitivity compared to the traditional AC Stark effect detection.  We show the relationship between incident electric field strength and observed signal to noise ratio.  With these results, we estimate the useable range of the atomic vapor cell antenna for AIS waveforms given current technology and detection techniques.

Tags: electrometry, quantum-optics, radio-frequency, rydberg-atoms, very-high-frequency
Organization: National Institute of Standards and Technology
SDNist v2: Deidentified Data Report Tool

SDNist v2 is a Python package that provides benchmark data and evaluation metrics for deidentified data generators.This version of SDNist supports using the NIST Diverse Communities Data Excerpts, a geographically partitioned, limited feature data set.The deidentified data report evaluates utility and privacy of a given deidentified dataset and generates a summary quality report with performance of a deidentified dataset enumerated and illustrated for each utility and privacy metric.

Tags: benchmarks, differential-privacy, privacy, private-information-sharing, synthetic-data
Organization: National Institute of Standards and Technology
NOAA/WDS Paleoclimatology - Dome Fuji - 338KYr Wet Extraction CO2 Data

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Ice Core. The data include parameters of ice cores with a geographic location of Antarctica. The time period coverage is from 339537 to 3220 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.

Tags: antarctica, atmospheric gas, climate forcing|ice cores, climate indicators, continent, doc/noaa/nesdis/ncei, dome fuji, earth science, ice core, ice core records, ice cores, latitude -77.32, longitude 38.7, material: bulk atmosphere, material: null, national centers for environmental information, nesdis, noaa, paleoclimate, paleoclimate indicators, u.s. department of commerce, what: carbon dioxide, what: depth, what: gas age, what: ice age
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
NOAA/WDS Paleoclimatology - Hartl - Berchtesgaden, Kneifelspitze - ABAL - ITRDB DEU331

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Tree Ring. The data include parameters of tree ring with a geographic location of Germany, Western Europe. The time period coverage is from 129 to -58 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.

Tags: abal, abies alba mill., berchtesgaden, biological records, climate indicators, continent, doc/noaa/nesdis/ncei, earth science, europe, european silver fir, germany, kneifelspitze, land records, latitude 47.656, longitude 13.022, material: null, national centers for environmental information, nesdis, noaa, paleoclimate, paleoclimate indicators, silver fir, tree ring, tree rings, tree-ring, u.s. department of commerce, western europe, what: age, what: total ring width, width
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
NOAA/WDS Paleoclimatology - MaÅ¡ek - 16SS KokoÅÃ­nsko - PISY - ITRDB CZE049

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Tree Ring. The data include parameters of tree ring with a geographic location of Czech Republic, Eastern Europe. The time period coverage is from 95 to -68 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.

Tags: 16ss kokoåã­nsko, biological records, climate indicators, continent, czech republic, doc/noaa/nesdis/ncei, earth science, eastern europe, europe, land records, latitude 50.587257, longitude 14.440833, material: null, national centers for environmental information, nesdis, noaa, paleoclimate, paleoclimate indicators, pinus sylvestris l., pisy, scotch pine, scots pine, tree ring, tree rings, tree-ring, u.s. department of commerce, what: age, what: total ring width, width
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
NOAA/WDS Paleoclimatology - Rea et al 1998 N.Pacific Eolian Sediment Mass Accumulation Rate Data

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of North Pacific Ocean. The time period coverage is from 11760000 to 60000 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.

Tags: climate indicators, doc/noaa/nesdis/ncei, earth science, latitude 44.7, longitude -168.3, material: dry sediment, material: dust, material: null, national centers for environmental information, nesdis, noaa, north pacific ocean, ocean, ocean/lake records, odp 885/886, pacific ocean, paleocean, paleoceanography, paleoclimate, paleoclimate indicators, u.s. department of commerce, what: accumulation rate, what: age, what: density, what: depth, what: dust, what: grain size median, what: sedimentation rate
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
NOAA/WDS Paleoclimatology - Brown fire data from Archuleta Mesa Plot A05 - IMPD USACH002

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Fire. The data include parameters of fire history|tree ring with a geographic location of Colorado, United States Of America. The time period coverage is from 390 to -52 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.

Tags: archuleta mesa plot a05, climate indicators, colorado, continent, doc/noaa/nesdis/ncei, earth science, establishment dates, fire history, fire history|tree ring, fire scar dates, land records, latitude 37.173053, longitude -107.268137, material: null, material: wood, national centers for environmental information, nesdis, noaa, north america, paleoclimate, paleoclimate indicators, pinus ponderosa douglas ex c. lawson, pipo, ponderosa pine, u.s. department of commerce, united states of america, western yellow pine, what: age, what: sample identification, what: tree demographic and injury and fire event code
Organization: National Oceanic and Atmospheric Administration, Department of Commerce