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# Numerical methods & software

### 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

### New Quantum Computing Algorithm Could Simulate Giant Particle Accelerators

A trio of theorists, including one from the National Institute of Standards and Technology (NIST), have described how a future quantum computer could be used to

## 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

### CONTAM User Guide and Program Documentation Version 3.4

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

### 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

### Applied and Computational Mathematics Division:Summary of Activities for Fiscal Year 2019

Author(s)
Ronald F. Boisvert
This report summarizes recent technical work of the Applied and Computational Sciences Division of the Information Technology Laboratory at the National

### Auto-tuning of double dot devices it in situ with machine learning

Author(s)
Justyna P. Zwolak, Thomas McJunkin, Sandesh Kalantre, J. P. Dodson, E. R. MacQuarrie, D. E. Savage, M. G. Lagally, S N. Coppersmith, Mark A. Eriksson, Jacob M. Taylor
The current practice of manually tuning quantum dots (QDs) for qubit operation is a relatively time- consuming procedure that is inherently impractical for

## Software

### 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

### Network Modeling Software

This software is a set of NetworkX additions for the creation of graphs to model networks.Graphicality Testing -- This is a set of routines for testing if a

## 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...