AndreaBozzo/ceres-open-data-index huggingface dataset:
Data from "NIST TN 2006 'Interlaboratory mechanical-property study for Cobalt-Chromium alloy made by laser powder-bed-fusion additive manufacturing'" DOI: 10.6028/NIST.TN.2006

Data from NIST TN 2006 'Interlaboratory mechanical-property study for Cobalt-Chromium alloy made by laser powder-bed-fusion additive manufacturing' DOI: 10.6028/NIST.TN.2006.  Data from Figures 2, 3, 4,  and 6, and Table 4.

Tags: additive-manufacturing-astm-f75-laser-powder-bed-fusion-yield-strength
Organization: National Institute of Standards and Technology
NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP) Version 10 - SRD 23

REFPROP is an acronym for REFerence fluid PROPerties. This program, developed by the National Institute of Standards and Technology (NIST), calculates the thermodynamic and transport properties of industrially important fluids and their mixtures. These properties can be displayed in Tables and Plots through the graphical user interface; they are also accessible through spreadsheets or user-written applications accessing the REFPROP dll. REFPROP is based on the most accurate pure fluid and mixture models currently available. It implements three models for the thermodynamic properties of pure fluids: equations of state explicit in Helmholtz energy, the modified Benedict-Webb-Rubin equation of state, and an extended corresponding states (ECS) model. Mixture calculations employ a model that applies mixing rules to the Helmholtz energy of the mixture components; it uses a departure function to account for the departure from ideal mixing. Viscosity and thermal conductivity are modeled with either fluid-specific correlations, an ECS method, or in some cases the friction theory method.

Tags: aga-8-benedict-webb-rubin-cfcs-excels-fortran-gerg-2004-gerg-2008-gibbs-gruneisen-hcfcs-hfcs-jo
Organization: National Institute of Standards and Technology
Model of the Wireless Factory Work-cell using the Systems Modeling Language

Wireless technology is a key enabler of the vision of the future factory work-cell. Such work-cell will operate autonomously with a high degree of mobility enabled by wireless technology.  This model describes the work-cell using the Systems Modeling Language (SysML).  Using SysML the structural and parametric characteristics of the work-cell are described. Our model provides the architectural components and performance constraints of the work-cell in which wireless is used for a significant portion of connectivity. It identifies the structural components, interfaces, and data flows. Parametric characteristics that impact work-cell performance are included in the model.  Using this model, industrial wireless networking requirements and work-cell behaviors may be developed and performance limits may be evaluated. Note: This dataset is stored in MagicDraw XML format. To open the XML file, MagicDraw 18.4 or higher with the SysML plugin is required.  An HTML report is included. To view the HTML report, and browser that supports ActiveX is required.

Tags: cyber-physical-systems, factory-communication, industrial-communication, industrial-control, industrial-wireless, manufacturing, sysml, wireless-sensor-networks
Organization: National Institute of Standards and Technology
Fast Dynamic Programming for Elastic Registration of Curves

This is a software suite for computing optimal diffeomorphisms for elastic registration of curves. Algorithm adapt-DP is based on DP (dynamic programming) restricted to an adapting strip which is able to perform this computation in linear time. Description of Algorithm adapt-DP can be found in "Fast Dynamic Programming for Elastic Registration of Curves", Proceedings of the 2nd International Workshop on Differential Geometry in Computer Vision and Machine Learning (DIFF-CVML'16) in conjunction with Computer Vision Pattern Recognition Conference (CVPR) 2016, Las Vegas, Nevada, June 26-July 1, 2016. The zip file Fast_Dynamic_Programming.zip contains copies of implementation of Algorithm adapt-DP as Fortran files (a Matlab Fortran mex file and a Python compatible Fortran file) for execution with Matlab/Python, Matlab/Python test files for executing adapt-DP Matlab Fortran mex file and Python compatible Fortran file, respectively, example data files, usage instructions in README files, etc.

Tags: adapting-strip, dynamic-programming, elastic-registration, shape-analysis
Organization: National Institute of Standards and Technology
A suite of atomic structure codes originally developed by R. D. Cowan adapted for Windows-based personal computers.

The package consists of a set of computer programs for calculation of energy levels, radiative transition wavelengths and probabilities, electron impact excitation and photoionization cross sections, etc. The programs were originally written by Robert D. Cowan in 1962-1991 (see R.D. Cowan, The theory  of atomic structure and spectra, University of California Press, Berkeley - Los Angeles - London, 1981). The dataset was updated in November, 2021.

Tags: atomic-structure, cowan, energy-levels, pc, transition-probabilities, windows
Organization: National Institute of Standards and Technology
Software to Process 3D Scanner Data

This software was developed per the ASTM E3125-17 documentary standard for 3D imaging systems. The software was written in MATLAB and Python and sample sphere data sets are provided.

Tags: 3d-scanners, astm-e3125, astm-e3125-17, dimensional-metrology, documentary-standards, point-cloud, sphere-segmentation
Organization: National Institute of Standards and Technology
Data and Results from Three Peg-in-Hole Experiments for Improving Insertion Tasks

A method was developed to reduce the point-based registration error by restoring the rigid body condition (RRBC method).  Registration is the process of transforming one coordinate frame to another coordinate frame.  The coordinate frame from which points are transformed is called the working frame and the coordinate frame to which points are transformed is called the destination frame.  The RRBC method can be used to reduce the uncertainty of a hole location and thus, improve the success rate for insertion tasks.  Peg-in-hole experiments were conducted to quantify the level of improvement.

How the RRBC method works:  A grid of points is measured in two different coordinate frames - working and destination.  The basic premise of the RRBC method is that the distance between any two points should be same in the working and destination frames - a fundamental concept for rigid bodies.  However, due to systematic and/or random measurement error, the distances are not exactly the same in the two frames. Using the two sets of measured points (fiducials), the RRBC method calculates the corrections to the fiducials in the working frame so that the rigid body condition is restored.  For points that are measured only in the working frame (targets), corrections for these points are linearly interpolated from the closest corrected fiducials. 

Data and results from three peg-in-hole experiments may be downloaded from this site.

Tags: assembly, insertion-task, manufacturing, peg-in-hole-experiments, registration, registration-error, rigid-body, target-registration-error
Organization: National Institute of Standards and Technology
LTE Device-to-Device Out-of-Coverage Communication with Frequency Hopping Resource Scheduling Performance Metrics Evaluation Data

This dataset represents the results from conducted simulations to evaluate the performance of Device-to-Device (D2D) communications in LTE when the User Equipment (UEs) are operating in UE-scheduled mode (Mode 2) with frequency hopping enabled. Different scenarios were simulated and communication performance was evaluated for each frequency hopping scheme defined in the LTE standard. The communication performance metrics include the successful transmission-reception ratio of transport blocks (TBs) at the physical layer, and the probability mass funciton (PMF) of consecutive TBs lost. Simulations were run multiple times with different random variable seeds, therefore, the mean and standard deviation of each metric is reported.

Tags: d2d-communication, pmf-of-transport-block-consecutive-losses-loss-spurt, transport-block-success-ratio-received-transmitted
Organization: National Institute of Standards and Technology
pyPRISM: A Computational Tool for Liquid State Theory Calculations of Macromolecular Materials

Polymer Reference Interaction Site Model (PRISM) theory describes the equilibrium spatial-correlations of liquid-like polymer systems including melts, blends, solutions, block copolymers, ionomers, liquid crystal forming polymers and nanocomposites. Using PRISM theory, one can calculate thermodynamic (e.g., second virial coefficients, Flory-Huggins interaction parameters, potentials of mean force) and structural (eg., pair correlation functions, structure factors) information for these macromolecular materials. pyPRISM is a Python-based, open-source framework for conducting PRISM theory calculations. This framework aims to simplify PRISM-based studies by providing a user-friendly scripting interface for setting up and numerically solving the PRISM equations. pyPRISM also provides data structures, functions, and classes that streamline PRISM calculations, allowing pyPRISM to be extended for use in other tasks such as the coarse-graining of atomistic simulation force-fields or the modeling of experimental scattering data. The goal of this framework is to reduce the barrier to correctly and appropriately using PRISM theory and to provide a platform for rapid calculations of the structure and thermodynamics of polymeric fluids and nanocomposites.

Tags: computation, liquid-state-theory, neutron-scattering, polymer, polymer-nanocomposite, polymer-solution, python, software, theory, tool, x-ray-scattering
Organization: National Institute of Standards and Technology
Geometries and material properties for simulating semiconductor patterned bridge defects using the finite-difference time-domain (FDTD) method

An in-house developed finite-difference time-domain (FDTD) code has been used to simulate certain patterned defects as found in the semiconductor industry.  Intrinsic to FDTD is the establishment of a simulation domain, a 3-D matrix of some arbitrary size (X, Y, Z) comprised of smaller cells (in our case, cubic with side length x), with each cell indexed to a material (including the vacuum) to form the geometry.  Although the specific text files used as inputs to the in-house FDTD engine are provided, such files are likely incompatible with external FDTD solutions for the replication of our results.  Therefore, entire 3-D matrices for our simulations have been reduced to single-vector, readable ASCII data files indexing the geometry and materials of the system, accompanied by text files that supply the optical constants used in the simulation as well as cross-sectional images that allow verification by others of their reconstruction of the 3-D matrix from the supplied 1-D ASCII data files.

Tags: defects, electromagnetic-simulation, fdtd, finite-difference-time-domain, pattered-defect-inspection, simulation-input
Organization: National Institute of Standards and Technology
Dispersion and Burning Behavior of Hydrogen Released in a Full-Scale Residential Garage in the Presence and Absence of Conventional Automobiles Supplemental Video Materials

The supplemental materials reported here provide standard high-definition (HD), high-speed, and infrared videos of the 13 full-scale hydrogen dispersion and burning experiments.  The videos show different burning dynamics of various hydrogen/air mixtures in the presence and absence of vehicles parked inside the garage.

Tags: fire-safety, fuel-cell, garage, hydrogen
Organization: National Institute of Standards and Technology
Hestia Fossil Fuel Carbon Dioxide Emissions for Salt Lake City, Utah

Hestia Project quantifies, simulates and visualizes greenhouse gases such as carbon dioxide emitted in urban regions.  Salt Lake City, Utah activity is provided at the county level (0.002 degree grid resolution), and at hourly and yearly time frames.  It builds upon work conducted at the national scale by the Vulcan Project. These high spatial and temporal resolution datasets are available for 2002, 2010, 2011, and 2012.

Tags: atmospheric-modeling, bottom-up-emissions-inventory, carbon-dioxide, carbon-monitoring, co2, fossil-fuel, greenhouse-gas, salt-lake-city, urban-emissions, utah
Organization: National Institute of Standards and Technology
GI625 optical fiber data imaged on a Zeiss Versa XRM-500 microCT  at 12 tube voltages

This is tomography data as acquired using a commercial X-ray tomography instrument. We obtained reconstructions of a graded-index optical fiber with voxels of edge length 1.05 µm at 12 tube voltages. The fiber manufacturer created a graded index in the central region by varying the germanium concentration from a peak value in the center of the core to a very small value at the core-cladding boundary. Operating on 12 tube voltages, we show by a singular value decomposition that there are only two singular vectors with significant weight. Physically, this means scans beyond two tube voltages contain largely redundant information. We concentrate on an analysis of the images associated with these two singular vectors. The first singular vector is dominant and images of the coefficients of the first singular vector at each voxel look are similar to any of the single-energy reconstructions. Images of the coefficients of the second singular vector by itself appear to be noise. However, by averaging the reconstructed voxels in each of several narrow bands of radii, we can obtain values of the second singular vector at each radius. In the core region, where we expect the germanium doping to go from a peak value at the fiber center to zero at the core-cladding boundary, we find that a plot of the two coefficients of the singular vectors forms a line in the two-dimensional space consistent with the dopant decreasing linearly with radial distance from the core center. The coating, made of a polymer rather than silica, is not on this line indicating that the two-dimensional results are sensitive not only to the density but also to the elemental composition. A stack of reconstructions are given here as tiff files of individual slices. Each zip file corresponds to a tilt series at a given tube voltage, given in the file name.  The power is also given in the file name. (For example, file “30kV-2W.zip” was tube voltage at 30kV, power 2W.) The power was varied so that the signal-to-noise was approximately equal for the various reconstructions. The experiment is described in:  ZH Levine, AP Peskin, EJ Garboczi, and AD Holmgren, Multi-Energy X-Ray Tomography of an Optical Fiber: The Role of Spatial Averaging, Microscopy and Microanalysis 25 (1) 70-76 (2019). https://doi.org/10.1017/S1431927618016136

Tags: x-ray-computed-tomography-optical-fiber-panchromatic-sharpening
Organization: National Institute of Standards and Technology
Sensor Placement and Detection Coverage for Spectrum Sharing in the 3.5 GHz Band Data

This dataset contains the results of simulated deployments of Environmental Sensing Capability (ESC) sensors along the coasts of the contiguous United States in the 3.5 GHz band. The Federal Communications Commission rules for spectrum sharing operation in this band require the ESC sensors to detect the presence of a federal incumbent shipborne radar for interference protection. The results include sensor locations, detection coverage, probability of outage, and probability of false alarm for each Dynamic Protection Area (DPA), i.e., a predefined geographic area inside which radar may experience harmful interference.

Tags: 3-5-ghz-band, dynamic-protection-areas-dpas, environmental-sensing-capability-esc-sensors, spectrum-sharing
Organization: National Institute of Standards and Technology
Code for "The Walker Alias Method in Modern Fortran"

This source code is available in zipped file which includes two source files, two author's output files, a Makefile and a README.txt file. An article with further documentation titled "The Walker Alias Method for Sampling in Modern Fortran" has been submitted for publication in the Journal of Research of the National Institute of Standards and Technology.  Before publication, it is available to NIST personnel through the internal manuscript system.

Tags: x-ray-computed-tomography-medical-phantom-hounsfield-unit-volume-shape
Organization: National Institute of Standards and Technology
Hestia Fossil Fuel Carbon Dioxide Emissions for Baltimore, Maryland

Hestia Project quantifies, simulates and visualizes greenhouse gases such as carbon dioxide emitted in urban regions.  Baltimore, Maryland activity is provided at the county level (200 m grid resolution), and at hourly and yearly time frames.  It builds upon work conducted at the national scale by the Vulcan Project. These high spatial and temporal resolution datasets are available from 2010.

Tags: atmospheric-modeling, baltimore, bottom-up-emissions-inventory, carbon-dioxide, carbon-monitoring, co2, fossil-fuel, greenhouse-gas, maryland, northeast-corridor, urban-emissions
Organization: National Institute of Standards and Technology
Hestia Fossil Fuel Carbon Dioxide Emissions for Indianapolis, Indiana

Hestia Project quantifies, simulates and visualizes greenhouse gases such as carbon dioxide emitted in urban regions.  Indianapolis data is provided at the county level (200 m grid resolution), and at hourly and yearly time frames.  It builds upon work conducted at the national scale by the Vulcan Project. These high spatial and temporal resolution datasets are available from 2010 to 2015.

Tags: atmospheric-modeling, bottom-up-inventory, carbon-dioxide, carbon-monitoring, co2, fossil-fuel, greenhouse-gas, indiana, indianapolis, urban-emissions
Organization: National Institute of Standards and Technology
Simple Knowledge Organization System (SKOS) version of Materials Data Vocabulary

A version of the Materials Data Vocabulary structured as Simple Knowledge Organization System (SKOS). The XML was originally created by the TemaTres software.  This vocabulary describes the applicability to material science of records in the NIST Materials Resource Registry (NMRR - https://materials.registry.nist.gov/). The NMRR allows for the registration of materials resources, bridging the gap between existing resources and the end users. The NMRR functions as a node in a federated system, making the registered information available for research to the materials community. This is being developed at the National Institute of Standards and Technology and is made available to solicit comments from the Material Science community. (An Excel version of the file is also included in the distributions for ease of use.)

Tags: controlled-vocabulary, materials-science, vocabularies, xml
Organization: National Institute of Standards and Technology
Hestia Fossil Fuel Carbon Dioxide Emissions Inventory for Los Angeles Basin

Hestia Project quantifies, simulates and visualizes greenhouse gases such as carbon dioxide emitted in urban regions.  Los Angeles basin activity is provided at the 1 km grid spatial resolution, and at temporal resolutions of hourly or annually.  Hestia-LA urban CO2 emissions inventory builds upon work conducted at the national scale (Vulcan Project) that includes various sectorial attributions.  Hestia's high spatial and temporal resolution datasets are currently available for 2010 to 2015, in UTC or local time.

Tags: atmospheric-modeling, bottom-up-emissions-inventory, california, carbon-dioxide, carbon-monitoring, co2, fossil-fuel, greenhouse-gas, los-angeles-basin, megacities, urban-emissions
Organization: National Institute of Standards and Technology
Temperature measurements of experiments to characterize the influence of walls, corners and enclosures on fire plumes.

The data is from two series of compartment fire experiments in which a natural gas burner is positioned in a corner, or against a wall, or inside a steel cabinet, to assess the effects on the plume and compartment temperatures. The measurements consist of one dimensional vertical thermocouple arrays to measure the hot gas layer temperature and height, and a three dimensional thermocouple array to measure the temperature of the fire plume as the burner is moved away from the corner or wall. The primary purpose of the experiments is to provide validation data for fire modeling analyses of these effects. Details of the experiment can be found in NIST Technical Note 1984.

Tags: cabinet-fires, corner-fires, fire-experiments, fire-models, natural-gas-fires, wall-fires
Organization: National Institute of Standards and Technology
Light field camera resolution evaluations

Evaluation of Lateral and Depth Resolutions of Light Field Cameras: Light field cameras have the potential of becoming inexpensive and portable 3D imaging instruments. However, the suitability of this camera to a specific application depends on resolution requirements.  This data set was collected to assess the image resolution of light field cameras during acquisition configurations similar to the ones encountered by forensic photographers at crime scenes. Examples of 3D crime scene objects include tire tread and shoe imprints in substances like mud or snow. More information about the acquisition is provided at https://isg.nist.gov/deepzoomweb/resources/csmet/pages/lytro_camera/lytro_camera.html. The  data are available for assessing resolution parameters for other applications of light field cameras at https://isg.nist.gov/deepzoomweb/resources/lytroEvaluations/index.html.

Tags: light-field-cameras, plenoptic-cameras, resolution-lytro-cameras
Organization: National Institute of Standards and Technology
Experimentally Generated Randomness Certified by the Impossibility of Superluminal Signals

Random numbers are an important resource for applications such as numerical simulation and secure communication. However, it is difficult to certify whether a physical random number generator is truly unpredictable. Here, we exploit the phenomenon of quantum nonlocality in a loophole-free photonic Bell test experiment for the generation of randomness that cannot be predicted within any physical theory that allows one to make independent measurement choices and prohibits superluminal signaling. To certify and quantify the randomness, we describe a new protocol that performs well in an experimental regime characterized by low violation of Bell inequalities. Applying an extractor function to our data, we obtained 256 new random bits, uniform to within 0.001. arXiv:1702.05178

Tags: bell-test, device-independent, loophole-free, quantum, random, random-number-generator, randomness
Organization: National Institute of Standards and Technology
Model-Based Optical Metrology in R: M.o.R.

Reliable optical critical dimension (OCD) metrology in the regime where the inspection wavelength λ is much larger than the critical dimensions (CDs) of the measurand is only possible using a model-based approach. Due to the complexity of the models involved, that often require solving Maxwell's equations, many applications use a library based look-up approach. Here, the best experiment-to-theory fit is found by comparing the measurement data to a library consisting of pre-calculated simulations. One problem with this approach is that it makes the accuracy of the solution dependent on the refinement of the grid. Interpolating between library values requires a uniform grid in most cases, and can also be very time-consuming. We present an approach based on radial basis functions that is fast, accurate and most importantly works on arbitrary grids. The method is implemented in a application based on the programming language R, that additionally allows for Bayesian data analysis, and provides multiple diagnostics.

Tags: model-based-metrology, statistics
Organization: National Institute of Standards and Technology