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# Numerical methods & software

### NIST Innovation Could Improve Detection of COVID-19 Infections

A multidisciplinary research team at the National Institute of Standards and Technology (NIST) has developed a way to increase the sensitivity of the primary

### Calibration of a Commercial Rheometer for Orthogonal Superposition Measurement

NIST researchers have addressed crucial calibration procedures for an advanced rheological technique that can make measurements on the structural dynamics of

### NIST Tool Enables More Comprehensive Tests on High-Risk Software

We entrust our lives to software every time we step aboard a high-tech aircraft or modern car. A long-term research effort guided by two researchers at the

### New NIST Data to Aid Production and Storage of 'Fascinating' Medication

Amantadine hydrochloride may be the most common medication you’ve never heard of. This compound has been around for decades as the basis for antiviral and other

## Projects and Programs

### zCompleted - Modeling Dispersion Rheology for Non-Spherical Particles

The flow of polymer composites via injection molding, spraying or spreading on surfaces is crucial to polymer composite manufacturing. For single-phase liquids

### Automated Combinatorial Testing for Software (ACTS)

Combinatorial testing is a proven method for more effective software testing at lower cost. Line Graph showing Cumulative percent of software failures. The key

### µMAG: Micromagnetic Modeling Activity Group

Micromagnetics concerns the patterns of magnetization that arise in materials on the scale of nanometers. Understanding these structures is key to technologies

### Computational Chemistry

Ab initio computational chemistry is considered to be one of the holy grails of computational science. The benefits to society range from lighter, stronger

## Publications

### Linking Theory to Practice: Predicting Ballistic Performance from Mechanical Properties of Aged Body Armor

Author(s)
Amanda L. Forster, Dennis D. Leber, Amy E. Engelbrecht-Wiggans, Virginie A. Landais, Allen Chang, Emilien J. Guigues, Guillaume Messin, Michael A. Riley
It has long been a goal of the body armor testing community to establish an individualized, scientific-based protocol for predicting end-of-life of fielded body

### CONTAM User Guide and Program Documentation Version 3.4

Author(s)
William S. Dols, Brian J. Polidoro

### NexusLIMS: Leveraging Shared Microscopy Resources for Data Analysis with a Configurable Laboratory Information Management System

Author(s)
Joshua A. Taillon, Raymond L. Plante, Marcus W. Newrock, June W. Lau, Gretchen R. Greene

### A fast simple algorithm for computing the potential of charges on a line

Author(s)
Zydrunas Gimbutas, Nicholas F. Marshall, Vladimir Rokhlin
We present a fast method for evaluating expressions of the form  u_j = \sum_{i = 1,i \not = j}^n \frac{\alpha_i}{x_i - x_j}, \quad \text{for} \quad j = 1

## Software

### HVAC SIMulation PLUS other systems (HVACSIM+)

The first version of HVACSIM+, which stands for “HVAC SIMulation PLUS other systems”, was introduced by National Institute of Standards and Technology (NIST) in

### Limits of Detection - ASTM E2677

ASTM subcommittee E54.01 has developed a Standard Test Method for the determination of Limit of Detection (LOD) in trace explosive detectors. The Method was

### NIST's Integrated Colony Enumerator (NICE)

Enumeration of bacterial colonies on an agar plate is simple in concept, but automated colony counting is difficult due to variations in colony color, size

### VCCTL Software

(Return to Cement Hydration and Degradation Modeling Software) The Virtual Cement and Concrete Testing Laboratory (VCCTL) software provides a virtual

## Tools and Instruments

### Automated Scanning Electron Microscope

The ASPEX Personal SEM (PSEM) is a tungsten filament scanning electron microscope optimized for automated particle analysis. The system was designed with

## Awards

### Xiao Tang - 2016 Fellow of the American Physical Society

The criterion for election is exceptional contributions to the physics enterprise; e.g., outstanding physics research, important...