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NIST Authors in Bold

Displaying 26526 - 26550 of 73960

Ontological Product Modeling for Collaborative Design

July 22, 2010
Author(s)
Conrad E. Bock, XuanFang Zha, Hyo-won Suh, Jae H. Lee
This paper shows how to combine ontological and model-based techniques in languages that facilitate collaborative design exploration. The proposed approach uses ontology to capture alternative designs and incremental refinements that meet requirements and

Statistics of Camera-Based Single-Particle Tracking

July 22, 2010
Author(s)
Andrew J. Berglund
Through analysis of digital images, camera-based single-particle tracking enables quantitative determination of transport properties of nanoparticles and molecules and provides nanoscale information about material properties such as viscosity and

Using Thermodynamics to Simulate Cement Paste Microstructure Development

July 22, 2010
Author(s)
Jeffrey W. Bullard, Barbara Lothenbach, Paul E. Stutzman, Kenneth A. Snyder
We couple equilibrium thermodynamic calculations to a 3D microstructure model to simulate microstructure development during hydration of portland cement paste. The model uses a collection of growth/dissolution rules to approximate a range of growth modes

Laser-produced MeV electrons and hard X-ray spectroscopic diagnostics

July 21, 2010
Author(s)
Lawrence T. Hudson, John F. Seely
A new spectroscopic technique for the measurement of the sizes of hard X-ray sources produced by the irradiation of solid-density targets by intense laser radiation is discussed. The technique is based on the source broadening of K shell spectral lines

Sigma Ballots

July 21, 2010
Author(s)
Stefan Popoveniuc, Andrew Regenscheid
We present Sigma ballots, a new type of ballot to be used in secure elections. Sigma ballots use the random order of candidates introduced by Pret a Voter, combined with the confirmation codes of Scantegrity II. These ballots can be produces by a DRE

A Risk-Uncertainty Formula Accounting for Uncertainties of Failure Probability and Consequence in a Nuclear Powerplant

July 20, 2010
Author(s)
Jeffrey T. Fong, Stephen R. Gosselin, Pedro V. Marcal, James J. Filliben, Nathanael A. Heckert, Robert E. Chapman
This paper is a continuation of a recent ASME Conference paper entitled "Design of a Python-Based Plug-in for Bench-marking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data" (PVP2009-77974). In that paper, which was co-authored by

Calibration of Ultra-Low Infrared Power at NIST

July 20, 2010
Author(s)
Solomon I. Woods, Stephen M. Carr, Adriaan C. Carter, Timothy M. Jung, Simon G. Kaplan, Raju V. Datla
The Low Background Infrared (LBIR) facility has developed and tested the components of a new detector for calibration of infrared powers down to 1 pW, with 0.1% uncertainty. Calibration of such low powers could be valuable for the quantitative study of

Polycyclic Aromatic Hydrocarbons (PAHs) in a Coal Tar Standard Reference Material - SRM 1597a Updated

July 20, 2010
Author(s)
Stephen A. Wise, Dianne L. Poster, Stefan D. Leigh, Catherine A. Rimmer, Stephanie Mossner, Patricia Schubert, Lane C. Sander, Michele M. Schantz
SRM 1597 Complex Mixture of Polycyclic Aromatic Hydrocarbons from Coal Tar, originally issued in 1987, was recently reanalyzed and reissued as SRM 1597a with 34 certified, 46 reference, and 12 information concentrations for polycyclic aromatic hydrocarbons

Polycyclic Aromatic Hydrocarbons (PAHs) in a Coal Tar Standard Reference Material - SRM 1597a Updated

July 20, 2010
Author(s)
Stephen A. Wise, Dianne L. Poster, Stefan D. Leigh, Catherine A. Rimmer, Stephanie Mossner, Patricia Schubert, Lane C. Sander, Michele M. Schantz
SRM 1597 Complex Mixture of Polycyclic Aromatic Hydrocarbons from Coal Tar, originally issued in 1987, was recently reanalyzed and reissued as SRM 1597a with 34 certified and 46 reference concentrations for polycyclic aromatic hydrocarbons (PAHs) and

Reference Material (RM) 8820: A Versatile New NIST Standard for Nanometrology

July 19, 2010
Author(s)
Michael T. Postek, Andras Vladar, William J. Keery, Michael R. Bishop, Benjamin Bunday, John Allgair
A new multipurpose instrument calibration standard has been released by NIST. This standard was developed to be used primarily for X and Y scale (or magnifi cation) calibrations of scanning electron microscopes from less than 10 times magnification to more

The Effect of Assessor Errors on IR System Evaluation

July 19, 2010
Author(s)
Ben Carterette, Ian Soboroff
Recent efforts in test collection building have focused on scaling back the number of necessary relevance judgments and then scaling up the number of search topics. Since the largest source of variation in a Cranfield-style experiment comes from the topics
Displaying 26526 - 26550 of 73960
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