U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 2951 - 2975 of 7109

Clifford-Deformed Surface Codes

March 19, 2024
Author(s)
Arpit Dua, Aleksander Kubica, Liang Jiang, Steven Flammia, Michael Gullans
… Quantum error correction, surface code, quantum computing …

Report of the Digital Evidence Task Group Quality Study

December 15, 2022
Author(s)
Barbara Guttman, Kelly Sauerwein, James R. Lyle
The report describes the results of a project performed by a study group from the Organization of Scientific Area Committees (OSAC) for Forensic Science Digital Evidence Subcommittee to identify the quality practices and management systems that are most

Digital Evidence Preservation: Considerations for Evidence Handlers

September 8, 2022
Author(s)
Barbara Guttman, Douglas R. White, Shannan Williams, Tracy Walraven
The preservation of digital evidence (DE) presents unique problems beyond traditional evidence preservation. This document addresses considerations related to the preservation of digital evidence. This document is part of a series on evidence management

Foundations of information governance for smart manufacturing

June 11, 2019
Author(s)
KC Morris, Yan Lu, Simon P. Frechette
The manufacturing systems of the future will be even more heavily dependent on the data than they are today. More and more data and information are being collected and communicated throughout product development lifecycles and across manufacturing value

Grover search and the no-signaling principle

September 14, 2016
Author(s)
Ning Bao, Bouland Adam, Stephen P. Jordan
From an information processing point of view, two of the key properties of quantum physics are the no-signaling principle and the Grover search lower bound. That is, despite admitting stronger-than-classical correlations, quantum mechanics does not imply

Crossover behavior of the thermal conductance and Kramers' transition rate theory

December 4, 2015
Author(s)
Kirill Velizhanin, Subin Sahu, Chih-Chun Chien, Yonatan Dubi, Michael P. Zwolak
Kramers' theory frames chemical reaction rates in solution as reactants overcoming a barrier in the presence of friction and noise. For weak coupling to the solution, the reaction rate is limited by the rate at which the solution can restore equilibrium

Microstructural Origins of Cement Paste Degradation by External Sulfate Attack

October 15, 2015
Author(s)
Pan Feng, Edward Garboczi, Pan Feng, Jeffrey W. Bullard
A microstructure model has been applied to simulate near-surface degradation of portland cement paste in contact with a sodium sulfate solution. This new model uses thermodynamic equilibrium calculations to guide both compositional and microstructure

New Insights into the Prehydration of Cement and Its Mitigation

January 27, 2015
Author(s)
Julyan Stoian, Tandre Oey, Jeffrey W. Bullard, Jian Huang, Aditya Kumar, Magdalena Balonis, Judith E. Terrill, Narayanan Neithalath, Gaurav Sant
Ordinary Portland cement (OPC) prehydrates during storage or handling in moist environments, forming hydration products on or near its particles' surfaces. Prehydration is known to reduce OPC reactivity, but the extent of prehydration has not yet been

Open Calphad - a free thermodynamic software

January 17, 2015
Author(s)
Bo Sundman, Ursula R. Kattner, Mauro Palumbo, Suzana G. Fries
The use of thermodynamics in many applications in material science like simulation of phase trans- formation suffers from the lack of high quality open source software for calculations of multicomponent systems. The goal of the Open Calphad (OC) software

Policy Machine: Towards a General Purpose Enterprise-Wide Operating Environment

August 28, 2014
Author(s)
David F. Ferraiolo, Larry Feldman, Gregory A. Witte
The ability to control access to sensitive data in accordance with policy is perhaps the most fundamental security requirement. Despite over four decades of security research, the limited ability for existing access control mechanisms to enforce a

IT Risks

February 3, 2014
Author(s)
Linda Wilbanks, D. Richard Kuhn, Wes Chou
Risk management is a common phrase when managing information, from the CISO to the programmer. We acknowledge that risk management is the identification, assessment and prioritization of risks and reflects how we manage uncertainty. These are some areas of

An Argument for Virtual Testing in the Cement Plant

September 10, 2012
Author(s)
Pichet Sahachaiyunta, Kittisak Pongpaisanseree, Jeffrey W. Bullard, Paul E. Stutzman, Edward Garboczi, Wilasa Vichit-Vadakan
The cement industry is moving toward customized commodity products, requiring plants that were built to consistently produce thousands of tons of one product each day to now be versatile enough to fine-tune multiple products that meet both industry

Modeling and Simulation of Cement Hydration Kinetics and Microstructure Development

December 22, 2011
Author(s)
Jeffrey Thomas, Joseph J. Biernacki, Jeffrey W. Bullard, Shashank Bishnoi, Jorge S. Dolado, George W. Scherer, Andreas Luttge
This review endeavors to summarize the past 40 years or so of progress towards the development of mathematical models for understanding and predicting cement hydration behavior. A complete and accurate model of hydration would enable materials engineers

OCT For Depth Detection of Buried Particles in Polymeric Materials

February 13, 2011
Author(s)
Robert C. Chang, Anant Agrawal, Peter M. Johnson, Christopher Stafford
In this work, we demonstrate a method to produce novel optical phantoms usable for the characterization of OCT axial resolution and contrast. By varying the diameter of the microspheres and the thickness of the polymer layers, different spatial frequencies
Displaying 2951 - 2975 of 7109
Was this page helpful?