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982 results found

NIST Diverse Community Excerpts Data

Data provided by  National Institute of Standards and Technology

The Diverse Community Excerpts are a set of tabular demographic data of households in the United States drawn from real records released in the American Community Survey, a product of the US Census Bureau. The data contain 24 features and are partitioned into three geographic regions: Boston area (7634 records), Dallas-Forth Worth area (9276 records), and US national (27254 records). The feature set is identical for all partitions, but the demographics vary radically between the geographic regions.

Tags: privacy,synthetic data,demographic data,American Community Survey,SDNist,

Modified: 2024-02-22

Views: 0

Database Infrastructure for Mass Spectrometry - Per- and Polyfluoroalkyl Substances

Data provided by  National Institute of Standards and Technology

Data here contain and describe an open-source structured query language (SQLite) portable database containing high resolution mass spectrometry data (MS1 and MS2) for per- and polyfluorinated alykl substances (PFAS) and associated metadata regarding their measurement techniques, quality assurance metrics, and the samples from which they were produced. These data are stored in a format adhering to the Database Infrastructure for Mass Spectrometry (DIMSpec) project. That project produces and uses databases like this one, providing a complete toolkit for non-targeted analysis.

Tags: per- and polyfluoroalkyl substances,PFAS,database,mass spectrometry,SQLite,emerging contaminants,high resolution mass spectrometry,non-targeted analysis,NTA,HRMS,

Modified: 2024-02-22

Views: 0

Optimal Bayesian Experimental Design Version 1.2.0

Data provided by  National Institute of Standards and Technology

Python module 'optbayesexpt' uses optimal Bayesian experimental design methods to control measurement settings in order to efficiently determine model parameters. Given an parametric model - analogous to a fitting function - Bayesian inference uses each measurement 'data point' to refine model parameters. Using this information, the software suggests measurement settings that are likely to efficiently reduce uncertainties. A TCP socket interface allows the software to be used from experimental control software written in other programming languages.

Tags: GitHub pages template,experimental design,Bayesian,optbayesexpt,python,adaptive measurement,

Modified: 2024-02-22

Views: 0

NIST Fingerprint Image Quality (NFIQ) 2 Conformance Test Set

Data provided by  National Institute of Standards and Technology

The images and values in this dataset are used to ensure conformance with ISO/IEC 29794-4, which may be purchased from https://www.iso.org/standard/62791.html. Values were computed with NIST's NFIQ 2 software, https://github.com/usnistgov/NFIQ2.

Tags: biometric,conformance,fingerprint,quality,

Modified: 2024-02-22

Views: 0

Software and data associated with ``DeJaco, R. F.; Roberts, M. J.; Romsos, E. L.; Vallone, P. M.; Kearsley, A. J. Reducing Bias and Quantifying Uncertainty in Fluorescence Produced by PCR*Under Review*, 2023.''

Data provided by  National Institute of Standards and Technology

The purpose of this code and data is to enable reproductionand facilitate extension of the computationalresults associated with following workDeJaco, R. F.; Roberts, M. J.; Romsos, E. L.; Vallone, P. M.; Kearsley, A. J. Reducing Bias and Quantifying Uncertainty in Fluorescence Produced by PCR*Under Review*, 2023.

Tags: Polymerase Chain Reaction,Uncertainty Quantification,Stochastic Branching Process,

Modified: 2024-02-22

Views: 0

Broadband Electromagnetic Properties of Engineered Flexible Absorber Materials

Data provided by  National Institute of Standards and Technology

Figures and relevant data from the paper "Broadband Electromagnetic Properties of Engineered Flexible Absorber Materials" are found here . The paper was published on Advanced Materials Technologies in 2023. ABSTRACT: Flexible and stretchable materials have attracted significant interest for applications in wearable electronics and bioengineering fields. Recent developments also incorporate mounted and embedded microwave circuits, components, and systems with engineered flexible materials that operate over a broadband frequency range (~1 to 100 GHz).

Tags: Flexible electronics,microwave circuits,Barium hexaferrite,PDMS composites,permittivity,permeability,

Modified: 2024-02-22

Views: 0

Supplementary data from the NIST lattice comparator associated with paper "The NIST Silicon Lattice Comparator Upgrade"

Data provided by  National Institute of Standards and Technology

The data from this instrument consists of sets of measurements of Xray intensity as a function of diffraction angle. All of it is collected and is stored in JSON files. The files are highly self-descriptive of their content, and contain angles, intensities, temperatures, and other environmental parameters, along with metadata.

Tags: Single crystal lattice standards; lattice comparator; delta-d; silicon,

Modified: 2024-02-22

Views: 0

Data for Plots in Work with Title: A Measurement-Referenced Error Vector Magnitude for Counterfeit Cellular Device Detection

Data provided by  National Institute of Standards and Technology

The raw data from this experiment are recorded voltage waveforms versus time from a calibrated equivalent time sampling oscilloscope, touchstone files from network analysis, and waveforms in both frequency and time domain from a vector receiver. As such, the raw data are text files in MATLAB format.The text files recorded from the oscilloscope end with .mat and can have varying numbers of columns depending on the number of scope channels that were recorded.

Tags: metrology for wireless systems; millimeter-wave wireless devices,modulated signals; over-the-air; wireless systems; millimeter-wave metrology; correlated uncertainty; Microwave Uncertainty Framework,

Modified: 2024-02-22

Views: 0

Data underlying Optics Letters "Single-modulator, direct frequency comb spectroscopy via serrodyne modulation" DOI: 10.1364/OL.482597

Data provided by  National Institute of Standards and Technology

This is the data underlying Optics Letters publication "Single-modulator, direct frequency comb spectroscopy via serrodyne modulation"

Tags: Optical frequency comb,serrodyne,cavity optomechanics,

Modified: 2024-02-22

Views: 0

Simultaneous rheology and cure kinetics dictate thermal post-curing of thermoset composite resins for material extrusion

Data provided by  National Institute of Standards and Technology

Thermoset composite structures printed at room temperature using direct ink writing often collapse during thermal post-curing. This behavior suggests that the rheological properties that govern structural stability (i.e., storage modulus and/or yield stress) are sensitive to both temperature and conversion. The rheo-Raman instrument provides a way to directly link rheological properties, temperature, and conversion.

Tags: rheo-Raman,thermoset composite,yield stress fluid,cure kinetics,direct ink writing,thermal post-cure,

Modified: 2024-02-22

Views: 0