AndreaBozzo/ceres-open-data-index huggingface dataset:
3.5 GHz CBRS Federal Incumbent Protection Move Lists with a Hybrid ITM/extended Hata Propagation Model

Federal Communications Commission rules for the 3.5 GHz citizens broadband radio service (CBRS) permit commercial systems to share 150 MHz of bandwidth with federal and other incumbents. To protect the federal incumbents, a spectrum coordinator?the spectrum access system (SAS)?uses a standardized algorithm to suspend some commercial transmissions when a nearby incumbent (e.g., a shipborne radar) becomes active. Using propagation models based on those employed by the SAS for interference management, the data herein was used to  quantify the impact of federal incumbent activity on commercial service, in terms of both the numbers of transmissions affected and their service area. These metrics are also used to examine the tradeoff between commercial coverage and immunity to incumbent activity as a function of commercial base station antenna height. The data include Simulated Citizens Broadband Radio Service device deployments, calculated federal incumbent protection move lists, and calculated coverage contours. The data is associated with the publication, "Effect of Federal Incumbent Activity on CBRS Commercial Service," M. R. Souryal and T. T. Nguyen, in Proc. IEEE DySPAN, Nov. 2019.

Tags: 3-5-ghz-cbrs-federal-incumbent-move-list
Organization: National Institute of Standards and Technology
NIST Campus Photovoltaic (PV) Arrays and Weather Station Data Sets

One-minute averaged values and one-second instantaneous values for 2015 through 2018 for three grid-connected photovoltaic arrays on the NIST campus in Gaithersburg, Maryland USA.  The arrays are built from monocrystalline silicon modules and range from 73 kW to 217 kW. Each array has a different tilt, orientation, and configuration. Irradiance, temperature, wind, and electrical measurements are recorded at each array. One-minute average data and one-second instantaneous data from a nearby weather station and images of the sky and arrays at one-hour and five-minute intervals are also included.

Tags: array, meteorology, photovoltaic, pv, solar, weather
Organization: National Institute of Standards and Technology
SEDCORR: An Algorithm for Correcting Systematic Energy Deficits in the Atom Probe Mass Spectra

SEDCORR is an open-source Python module designed to correct for the systematic energy deficits in atom probe mass spectra of electrically insulating samples.  The assumption of the algorithm is that the mass spectrum for a dataset is conserved throughout the dataset and that any changes to the peak positions arise from an unknown slowly-fluctuating accelerating voltage.  For computational speed, the unknown accelerating voltage is determined using a template matching FFT-based cross correlation method.  The Python source code and an example dataset is available on the home page: https://github.com/usnistgov/SEDcorr

Tags: atom-probe-microscopy, energy-deficit-correction, fft, insulator, mass-spectra, python
Organization: National Institute of Standards and Technology
Copper k-alpha xray emission spectrum

This data set consist of two representations of the electron-induced copper k-alpha x-ray emission spectrum.  One file contains rebinned counting data, and is close to 'raw'.  The second file contains a least-squares spline of the data, which should be a highly useful representation for computational purposes. 



Tags: copper, emission-spectrum, k-alpha, si, traceable, x-ray, xray
Organization: National Institute of Standards and Technology
teqp: Templated EQuation of state Package

teqp is a library written in C++ that allows for calculation of numerical derivatives of thermodynamic equations of state with respect to the independent variables with numerical differentiation tools.  No hand-written derivatives are required, and the computational speed is competitive with, or better than, the results from hand-written derivatives in low-level programming languages.

Tags: c_, derivatives, differentiation, equation-of-state, mixture-properties
Organization: National Institute of Standards and Technology
Timing Offset and Timing Stability for a Dual-Clock Channel Sounder

This project is anticipated to generate Working Data, Derived Data, and Published Results. Working Data will comprise raw measurement information from channel sounder instruments or oscilloscopes. Our channel sounder records data in National Instruments proprietary binary (.tdms) format. Oscilloscope measurements will be recorded as ASCII spreadsheet (.csv) formats. Also among working data will be human-readable files containing experimental configurations and conditions for the collection of channel sounding data. These data are stored as spreadsheet (.xlsx) files. Working Data will be processed into Derived Data using a set of Matlab scripts (hereafter "data processing codes"), which apply timing and statistical calculations to the Working Data. These Derived Data will be saved in Matlab's proprietary storage format (.mat) files. Each file will contain data structures which group experimental conditions and results together. Published Results may comprise charts or tables, which will demonstrate associations between derived results and experimental configurations or environmental conditions. The data contained in these charts or tables will comprise data from the Derived Data (.mat) files, as well as calculated statistical information such as confidence intervals. A set of Matlab scripts (hereafter "plotting codes") allows for selection of specific experiments from among the Derived Data, and for representation of these results in various plots. Any published chart may be reproduced provided three sets of information: (1) the Derived Data (.mat) file, (2) the Matlab plotting codes, and (3) a series of commands to the Matlab plotting codes to select the experimental data to be plotted. Special data requirements: These data may require appropriate software to access. National Instruments (.tdms) data files require software from National Instruments, or a third-party converter, to be viewable. Matlab (.mat) files may require Matlab to access contained data.

Tags: 5g-technology-channel-sounder-millimeter-wave-wireless-communication-propagation-channel-system, time-allan-deviation-timing-errors-timing-noise-timing-offset-wireless-system
Organization: National Institute of Standards and Technology
Performance Study of a GAA-GAA Coexistence Scheme in the CBRS Band

This research work is a performance study of GAA-GAA coexistence in the Citizens Broadband Radio Service (CBRS) band. The Wireless Innovation Forum (WINNForum), which has developed standards for commercial operations in this band, has recommended three approaches to GAA-GAA coexistence. This work studies one of the approaches (called Approach 1) . We provide the results of this study through the dataset archived here. There are few configurations considered in the study.  We chose two geographical locations: Virginia Beach (VB) and San Diego (SD). In one deployment scenario all the CBRS devices (CBSDs) were chosen to be Category A (Cat A)  CBSDs and in the other, it was a mix of Cat A and Cat B. CBSD deployment densities of 3, 10, 30, 50 per square kilometers were considered. Two propagation models, namely ITM and Hybrid models were used in the evaluation.

Tags: 3-5-ghz-cbrs-coexistence, gaa
Organization: National Institute of Standards and Technology
2D Segmentation of Concrete Samples for Training AI Models

This web-based validation system has been designed to perform visual validation of automated multi-class segmentation of concrete samples from scanning electron microscopy (SEM) images. The goal is to segment automatically SEM images into no-damage and damage sub-classes, where the damage sub-classes consist of paste damage, aggregate damage, and air voids. While the no-damage sub-classes are not included in the goal, they provide context for assigning damage sub-classes. The motivation behind this web validation system is to prepare a large number of pixel-level multi-class annotated microscopy images for training artificial intelligence (AI) based segmentation models (U-Net and SegNet models). While the purpose of the AI models is to predict accurately four damage labels, such as, paste damage, aggregate damage, air voids, and no-damage, our goal is to assert trust in such predictions (a) by using contextual labels and (b) by enabling visual validations of predicted damage labels.

Tags: cs-met-computational-metrology
Organization: National Institute of Standards and Technology
NIST SRD 46. Critically Selected Stability Constants of Metal Complexes: Version 8.0 for Windows

This version of NIST Standard Reference Database 46 is a major enhancement to this widely used database which provides comprehensive coverage of interactions for aqueous systems of organic and inorganic ligands with protons and various metal ions and is based on the six-volume Critical Stability Constants by Martell and Smith. The new version contains 225 additional ligands, new data, data printing, rapid bibliography searching and more streamlined commands. New literature has resulted in revision and upgrading of 30% of previous data. Entire contents are critically selected for accuracy and consistency.

Tags: database, metal-complexes, nist, stability-constants
Organization: National Institute of Standards and Technology
NIST alloy data

The NIST Alloy data web application (https://trc.nist.gov/metals_data) provides access to thermophysical property data with a focus on unary, binary, and ternary metal systems.

Tags: alloy, binary, calphad, conductivity, crystal, density, diffusivity, elements, enthalpy, heat-capacity, liquid, material-development, metal, phase, phase-transition, resistivity, solid, surface-tension, temperature-dependent, ternary, thermophysical-property, viscosity
Organization: National Institute of Standards and Technology
Construction of a Dual-enzyme, Subzero (-30 degree C) Chromatography System and Multi-channel Precision Temperature Controller for Hydrogen-Deuterium Exchange Mass Spectrometry

This tutorial provides  mechanical drawings, electrical schematics, parts lists, STL files for 3D-printed parts, IGS files, and instructions for automated machining necessary for construction of a dual-protease, subzero, liquid chromatography system for hydrogen-deuterium exchange mass spectrometry. Electrical schematics for construction of a multi-zone temperature controller that regulate to ±0.1 oC are also included in this tutorial.

Tags: hydrogen-deuterium-exchange, liquid-chromatography, mass-spectrometry, peptide, precision, protein, proteolysis, proteomics, reference-material, temperature-control
Organization: National Institute of Standards and Technology
NIST Inorganic Crystal Structure Database (ICSD)

Materials discovery and development necessarily begins with the preparation and identification of product phase(s). Crystalline compounds can be identified by their characteristic diffraction patterns using X-rays, neutrons, and or electrons. An estimated 20,000 X-ray diffractometers and a comparable number of electron microscopes are used daily in materials research and development laboratories for this purpose. Access to crystal structure data is a critical step in solving research and applications problems in materials researches, and these data are of interest to analysts in areas such as materials design, property prediction and compound identification.

NIST Crystallographic Data Center, in collaboration with partners all over the world, evaluates and disseminates chemical, physical and crystallographic information published on these materials. NIST Standard Reference Database 3: NIST Inorganic Crystal Structure Database (NIST ICSD) is a comprehensive collection of crystal structure data of nonorganic compounds (including inorganics, ceramics, minerals, pure elements, metals, and intermetallic systems) containing over 210,000 entries and covering the literature from 1913.

NIST ICSD includes entries that fall into the following categories: full structure data from experimental refinement or derived from their iso-structural structure types, theoretically predicted structures from computer simulations, as well as partially characterized structures.

The NIST ICSD web application provides materials researchers with a user-friendly interface to search the database based on bibliographic information, chemistry, unit cell, space group, experimental settings, mineral name/group and other derived data from expert evaluation. In addition, it also provides users with functions to easily create and examine results from various crystallographic computations, such as reduced cell, bond distance/angle, calculated powder diffraction data, and structure standardization.

Tags: advanced-materials, chemical-structures, crystal-structures, crystallography, diffraction, disorder, electrons, identification, inorganic, magnetic, manufacturing, materials, metals, minerals, neutrons, rietveld, safety, security-and-forensics, synchrotron, twinned, x-rays
Organization: National Institute of Standards and Technology
Reference Knowledge Graphs of STEP and QIF Data for a Three-Part Box Assembly

This dataset provides reference ontologies that were translated from product design and inspection data from the National Institute of Standards and Technology (NIST) Smart Manufacturing Systems (SMS) Test Bed.  The examples represents a three-component assembly of a box, machined from Aluminum, and has a technical data package available on the SMS Test Bed website.  The use of the ontologies aims to integrate the product lifecycle data of engineering design represented in the STEP AP242 format, which is described in the ISO 10303 series, as well as quality assurance data, representing in the Quality Information Framework (QIF) standard.

Tags: digital-thread, inspection, ontology, product-data, qif, quality-information-framework, smart-manufacturing, step-ap242
Organization: National Institute of Standards and Technology
Ageing of High Strength p-Aramid Fibers Used in Body Armor

To improve the reliability and design of armor, it is imperative to understand the failure modes and the degradation rates of the materials used in armor. Despite the best efforts of manufacturers, some vulnerability of armor materials to ageing due to hydrolytic or oxidative environments is expected and may result in the degradation of material properties such as tensile strength. In this work, p-aramid yarns from two manufacturers were exposed to environmental conditions of various fixed temperature and humidity combinations. The maximum temperature and humidity condition was 70 °C and 76 % RH. Tensile tests were performed on specimens extracted at several different timepoints over the course of at least one year to determine the change in ultimate tensile strength and failure strain as a function of time, temperature, and humidity. These materials were found to be generally resistant to degradation at most conditions, showing changes of less than 10 % only at the highest temperature and humidity conditions.

This data set contains failure load and failure strain values for three different aramid yarns, exposed to various conditions. It also includes Fourier Transform Infrared (FTIR) spectroscopy spectra for two of the aramids.

Tags: aramid, body-armor, environmental-ageing, mechanical-properties, ppta, tensile-testing, yarn-testing
Organization: National Institute of Standards and Technology
SRM 924a Lithium Carbonate

Standard Reference Material 924a Lithium Carbonate - This Standard Reference Material (SRM) is intended for use as a chemical of known purity. It is intended primarily for use in the calibration and standardization of procedures and for the routine critical evaluation of the daily working standards used in these procedures. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials
Organization: National Institute of Standards and Technology
SRM 695 Trace Elements in Multi-Nutrient Fertilizer

Standard Reference Material 695 Trace Elements in Multi-Nutrient Fertilizer - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of techniques employed in the analysis of multi-nutrient fertilizer materials and materials of a similar matrix. A unit of SRM 695 consists of approximately 70 g of jet-milled fertilizer. This data is public in the Certificate of Analysis for this material.

Tags: environment-and-climate, fertilizer, srm, standard-reference-material, trace-elements
Organization: National Institute of Standards and Technology
SRM 915b Calcium Carbonate

Standard Reference Material SRM 915c Calcium Carbonate - This Standard Reference Material (SRM) is intended for use as an analytical standard of known purity. It is intended primarily for use in the calibration and standardization of procedures for calcium (Ca) determinations employed in clinical analysis and for routine critical evaluation of the daily working standards used in these procedures. This data is public in the Certificate of Analysis for this material.

Tags: advanced-materials, calcium, calcium-carbonate, carbonate, srm, standard-reference-material
Organization: National Institute of Standards and Technology
SRM 2691 Coal Fly Ash

Standard Reference Material 2691 Coal Fly Ash - This Standard Reference Material (SRM) is intended for use in the evaluation of analytical methods used for the classification of coal fly ash and for the determination of constituent elements in coal fly ash or materials of a similar matrix. A unit of SRM 2691 consists of three 10 g hermetically sealed glass vials of fly ash pulverized to less than 150 ?m particle size and blended to a high degree of homogeneity. This data is public in the Certificate of Analysis for this material.

Tags: coal, coal-fly-ash, energy, srm, standard-reference-material, sulfur
Organization: National Institute of Standards and Technology
SRM 895 Stainless Steel (SAE 201)

This Standard Reference Material (SRM) is in the form of chips sized between 0.50 and 1.18 mm sieve openings (35 and 16 mesh).  It is intended for use primarily in chemical methods of analysis.  Similar material for use in spectrometric methods of analysis is available as SRM 1297.  This data is public in the Certificate of Analysis for this material.

Tags: elemental-analysis, manufacturing, stainless-steel, steel
Organization: National Institute of Standards and Technology
SRM 909c Frozen Human Serum

Standard Reference Material 909c Frozen Human Serum - This Standard Reference Material (SRM) is intended primarily for use in validating analytical methods for the determination of specified constituents in human serum.  This SRM can also be used for quality assurance when assigning values to in house control materials.  A unit of SRM 909c consists of three vials, each containing 2 mL of frozen human serum. This data is public in the Certificate of Analysis for this material.

Tags: biosciences-and-health, certified-values, electrolytes, frozen-human-serum, metabolites, reference-values, srm, srm-909c, standard-reference-material
Organization: National Institute of Standards and Technology
3.5 GHz CBRS Federal Incumbent Protection Move Lists and Aggregate Interference Statistics

Simulated Citizens Broadband Radio Service device deployments, calculated federal incumbent protection move lists, and calculated aggregate interference statistics.

This data is associated with publication, "3.5 GHz Federal Incumbent Protection Algorithms," M. R. Souryal, T. T. Nguyen, and N. J. LaSorte, in Proc. IEEE DySPAN 2018, Oct. 2018.

Tags: 3-5-ghz, aggregate-interference, cbrs, federal-incumbent, move-list
Organization: National Institute of Standards and Technology
SRM 2690 Coal Fly Ash

Standard Reference Material 2690 Coal Fly Ash - This Standard Reference Material (SRM) is intended for use in the evaluation of analytical methods used for the classification of coal fly ash and for the determination of constituent elements in coal fly ash or materials of a similar matrix. A unit of SRM 2690 consists of three 10 g hermetically sealed glass vials of fly ash pulverized to less than 150 ?m particle size and blended to a high degree of homogeneity. This data is public in the Certificate of Analysis for this material.

Tags: coal, coal-fly-ash, energy, srm, standard-reference-material, sulfur
Organization: National Institute of Standards and Technology
SRM 2689 Coal Fly Ash

Standard Reference Material 2689 Coal Fly Ash - This Standard Reference Material (SRM) is intended for use in the evaluation of analytical methods used for the classification of coal fly ash and for the determination of constituent elements in coal fly ash or materials of a similar matrix. A unit of SRM 2689 consists of three 10 g hermetically sealed glass vials of fly ash pulverized to less than 150 µm particle size and blended to a high degree of homogeneity. This data is public in the Certificate of Analysis for this material.

Tags: coal, coal-fly-ash, energy, srm, standard-reference-material
Organization: National Institute of Standards and Technology
H05337: NOS Hydrographic Survey , 1931-12-31

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information.
							NOAA is responsible for archiving and distributing the source data as described in this metadata record.

Tags: bathymetry, bathymetry/seafloor topography, continent, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, hydrographic surveys for selected locations within the united states (hydro_bathy_2006), in situ ocean-based platforms, marine sediments, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, ocean, oceans, seafloor topography, sediment composition, ships, u.s. department of commerce, united states of america, water depth
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
H05891: NOS Hydrographic Survey

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information.
							NOAA is responsible for archiving and distributing the source data as described in this metadata record.

Tags: bathymetry, bathymetry/seafloor topography, continent, doc/noaa/nesdis/ncei, doc/noaa/nesdis/ngdc, earth science, hydrographic surveys for selected locations within the united states (hydro_bathy_2006), in situ ocean-based platforms, marine sediments, national centers for environmental information, national geophysical data center, nesdis, noaa, north america, ocean, oceans, seafloor topography, sediment composition, ships, u.s. department of commerce, united states of america, water depth
Organization: National Oceanic and Atmospheric Administration, Department of Commerce