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74 results found

Development of a Tool to Determine the Variability of Consensus Mass Spectra Supporting Data

Data provided by  National Institute of Standards and Technology

Supporting datasets and algorithms (R-based) for the manuscript entitled "Development of a Tool to Determine the Variability of Consensus Mass Spectra", including an R Markdown script to reproduce the manuscript's figures.

Tags: mass spectrometry,uncertainty analysis,per- and polyfluoroalkyl substances,PFAS,reference mass spectrum,

Modified: 2024-02-22

Views: 0

JARVIS: Joint Automated Repository for Various Integrated Simulations

Data provided by  National Institute of Standards and Technology

JARVIS (Joint Automated Repository for Various Integrated Simulations) is a repository designed to automate materials discovery using classical force-field, density functional theory, machine learning calculations and experiments.

The Force-field section of JARVIS (JARVIS-FF) consists of thousands of automated LAMMPS based force-field calculations on DFT geometries. Some of the properties included in JARVIS-FF are energetics, elastic constants, surface energies, defect formations energies and phonon frequencies of materials.

Tags: Density functional theory,classical interatomic potential,force-field,python,JARVIS,MGI,MDCS,RESTAPI,automation,

Modified: 2024-02-22

Views: 0

FEASST: Free Energy and Advanced Sampling Simulation Toolkit

Data provided by  National Institute of Standards and Technology

The Free Energy and Advanced Sampling Simulation Toolkit (FEASST) is a free, open-source, modular program to conduct molecular and particle-based simulations with flat-histogram Monte Carlo and molecular dynamics methods. It is a software written in C++ and python which is made publicly available to aid in reproducibility. It is also provided as a service to the scientific community in which there are few , if any, Monte Carlo programs that support flat histogram methods and advanced sampling algorithms. This software is expected to be updated frequently with new methods.

Tags: monte carlo,molecular simulation,free energy,flat histogram,C++,python,

Modified: 2024-02-22

Views: 0

Source of the Refl1d program for modeling and analyzing neutron and X-ray reflectometry data, with the addition of distributed roughness capability.

Data provided by  National Institute of Standards and Technology

Source of the Refl1d program for modeling and analyzing neutron and X-ray reflectometry data, with the addition of distributed roughness capability.

Tags: neutron scattering,reflectometry,polarized,Bayesian,roughness,python,

Modified: 2024-02-22

Views: 0

pyPRISM: A Computational Tool for Liquid State Theory Calculations of Macromolecular Materials

Data provided by  National Institute of Standards and Technology

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.

Tags: polymer,theory,liquid-state theory,python,polymer nanocomposite,polymer solution,X-ray scattering,neutron scattering,software,tool,computation,

Modified: 2024-02-22

Views: 0

Hydrogen-Deuterium Exchange Mass Spectrometry (HDX-MS) Centroid Data measured between 3.6 degrees C and 25.4 degrees C for the Fab Fragment of NISTmAb

Data provided by  National Institute of Standards and Technology

The spreadsheet file reported herein provides centroid data, descriptive of deuterium uptake, for the Fab Fragment of NISTmAb (PDB: 5K8A) reference material, as measured by the bottom-up hydrogen-deuterium exchange mass spectrometry (HDX-MS) method. The protein sample was incubated in deuterium-rich solutions under uniform pH and salt concentrations between 3.6 degrees C and 25.4 degrees C for seven intervals ranging (0 to 14,400) s plus a control sample that simulates a Fab Fragment immersed for infinite time in D2O.

Tags: hydrogen-deuterium exchange,hydrogen exchange,HDX-MS,interlaboratory comparison,mass spectrometry,peptide,precision,proteomics,reference material,repeatability,reproducibility,

Modified: 2024-02-22

Views: 0

pyLLE: a Fast and User Friendly Lugiato-Lefever Equation Solver

Data provided by  National Institute of Standards and Technology

We present the development of pyLLE, a freely accessible Lugiato-Lefever equation solver programmed in Python and Julia and optimized for the simulation of microresonator frequency combs. Examples illustrating its operation and performance are presented.

Tags: photonics,optics,frequency combs,python,julia,

Modified: 2024-02-22

Views: 0

NIST DART-MS Forensics Database (is-CID)

Data provided by  National Institute of Standards and Technology

The NIST DART-MS Forensics Database is an evaluated collection of in-source collisionally-induced dissociation (is-CID) mass spectra of compounds of interest to the forensics community (e.g. seized drugs, cutting agents, etc.). The is-CID mass spectra were collected using Direct Analysis in Real-Time (DART) Mass Spectrometry (MS), either by NIST scientists or by contributing agencies noted per compound. The database is provided as a general-purpose structure data file (.SDF).

Tags: Standard reference data,mass spectra,Ion Fragmentation,mass spectrometry,NIST Mass Spectral Libraries,Chemical Identification,Biosciences and Health,Security and Forensics,

Modified: 2024-02-22

Views: 0

Trojan Detection Software Challenge - image-classification-dec2020-train

Data provided by  National Institute of Standards and Technology

Round 3 Training DatasetThe data being generated and disseminated is the training data used to construct trojan detection software solutions. This data, generated at NIST, consists of human level AIs trained to perform image classification. A known percentage of these trained AI models have been poisoned with a known trigger which induces incorrect behavior. This data will be used to develop software solutions for detecting which trained AI models have been poisoned via embedded triggers.

Tags: Trojan Detection; Artificial Intelligence; AI; Machine Learning; Adversarial Machine Learning;,

Modified: 2024-02-22

Views: 0

Trojan Detection Software Challenge - image-classification-aug2020-test

Data provided by  National Institute of Standards and Technology

Round 2 Test DatasetThe data being generated and disseminated is the test data used to evaluate trojan detection software solutions. This data, generated at NIST, consists of human level AIs trained to perform a variety of tasks (image classification, natural language processing, etc.). A known percentage of these trained AI models have been poisoned with a known trigger which induces incorrect behavior. This data will be used to develop software solutions for detecting which trained AI models have been poisoned via embedded triggers.

Tags: Trojan Detection; Artificial Intelligence; AI; Machine Learning; Adversarial Machine Learning;,

Modified: 2024-02-22

Views: 0