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.

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.

Hourly methane mole fraction data collected from four tower sites in the Washington DC and Baltimore MD region as part of NIST's Northeast Corridor project. Dataset accompanying publication "Seasonally resolved excess urban methane emissions from the Baltimore/Washington, DC metropolitan region" by Huang, Y., Kort, E. A., Gourdji, S., Karion, A., Mueller, K., and Ware, J.: Seasonally Resolved Excess Urban Methane Emissions from the Baltimore/Washington, DC Metropolitan Region, Environ. Sci. Technol., 10.1021/acs.est.9b02782, 2019.

Python and Javascript source files for the reductus program, used for data reduction for all the neutron reflectometers at the NIST Center for Neutron Research (includes the PBR, MAGIK and NG7 Refl instruments)

This software package performs joint quantum state and measurement tomography. The software is provided as Python source code.

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.

This study quantifies the contribution of CLT building elements to compartment fires and characterizes the effect of gypsum board on delaying or preventing involvement of the CLT in the fire under varied ventilation conditions. Six compartments (9.1 m long x 4.6 m wide x 2.7 m high) were assembled out of prefabricated CLT panels. Each panel was factory assembled using five plies of 35 mm thick lumber for a total thickness of 175 mm. A polyurethane adhesive was used to hold the plies together.

This is the taxonomy that is used for classifying information on the NIST website. It comprises a set of top-level designations that include the research areas within NIST, with two levels of subcategories beneath.

The Additive Manufacturing Benchmark Test Series (AM-Bench) is developing a continuing series of controlled benchmark tests, in conjunction with a conference series, with two initial goals: 1) to allow modelers to test their simulations against rigorous, highly controlled additive manufacturing benchmark test data, and 2) to encourage additive manufacturing practitioners to develop novel mitigation strategies for challenging build scenarios.

These data are supplemental data that include digital holographic microscopy measurements of nanoscale surface topography changes occurring during the dissolution of beta-dicalcium silicate in water and in water-ethanol mixtures. The dissolution flux in flowing solutions depends on the water activity to an empirically determined power of 1.7. The heterogeneous distribution of reactive surface sites (e.g., crystalline defects) at the surface leads to a distribution of local fluxes.