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NIST Authors in Bold

Displaying 8901 - 8925 of 9860

Understanding the Hazards of Grouped Electrical Cables

June 7, 2010
Author(s)
Kevin B. McGrattan, Andrew J. Lock, Marc R. Nyden, Jason Dreisbach, Nathan D. Marsh, David Stroup
CHRISTIFIRE (Cable Heat Release, Ignition, and Spread in Tray Installations during FIRE) is a U.S. Nuclear Regulatory Commission Office of Research program to quantify the mass and energy released from burning electrical cables. This type of quantitative

Full-Scale Residential Smoke Alarm Performance

September 8, 2009
Author(s)
Thomas G. Cleary
A series of 24 full-scale experiments were conducted in a multi-room structure to examine the effects of alarm type (photoelectric, ionization, and dual sensor), alarm location, fabric type (100 % cotton and 100 % polyester), polyurethane foam density

Uncertainty Analysis of a Simple Fringe Projection System

July 1, 2009
Author(s)
Shawn P. Moylan, Gregory W. Vogl
Fringe projection is an optical method of measuring the surface profile of a part. Most basic fringe projection processes require an initial calibration step to determine components of coordinate transformation matrices before the surface point coordinates

Uncertainties in Scaling Factors for ab Initio Vibrational Zero-Point Energies

March 21, 2009
Author(s)
Karl K. Irikura, Russell D. Johnson III, Raghu N. Kacker, Ruediger Kessel
Vibrational zero-point energies (ZPEs) determined from ab initio calculations are often scaled by empirical factors. An empirical scaling factor partially compensates for the effects arising from vibrational anharmonicity and incomplete treatment of

A reversible structural transition in MIL-53 with large temperature hysteresis

August 12, 2008
Author(s)
Yun Liu, Jae-Hyuk Her, Anne Dailly, A. Ramirez-Cuesta, Dan A. Neumann, Craig Brown
The metal-organic framework, MIL-53, can have a structural transition from an open-pored to a closed-pored structure by adsorbing different guest molecules. The aid of guest molecules is believed to be necessary to initiate this "breathing" effect. Using

Recent Developments of the HLPR Chair

June 15, 2007
Author(s)
Roger V. Bostelman, James S. Albus, Tommy Chang
The Home Lift, Position and Rehabilitation (HLPR) Chair, developed at the National Institute of Standards and Technology (NIST) within the Intelligent Systems Division (ISD) from 2005 to 2006, is currently being evaluated for static stability using

SIM Time and Frequency Comparison Network in Near Real Time

October 25, 2006
Author(s)
Jose M. Lopez, Michael A. Lombardi, Andrew N. Novick, Jean-Simon Boulanger, Raymond Pelletier, Carlos Donado
A network for time and frequency comparisons within the Inter-American Metrology System (SIM) has been developed. The SIM time and frequency network uses the common-view Global Positioning System (GPS) method to compare frequency and time standards

Comparison of MPEG-2 and AVC Coding on Synthetic Test Materials

August 30, 2006
Author(s)
Charles D. Fenimore, John W. Roberts
The available resources for evaluation of moving imagery coding include a variety of subjective and objective methods for quality measurement. These are applied to a variety of imagery, ranging from synthetically-generated to live capture. NIST has created

Dissipation of Oxygen From Outward Leak of Closed Circuit Breathing Device

October 18, 2005
Author(s)
Kathryn M. Butler, Rodney A. Bryant, J G. Kovac
Closed circuit breathing devices recycle exhaled air after scrubbing carbon dioxide and adding make-up oxygen from a tank of pure oxygen. Use of this equipment allows first responders to work for up to four hours without swapping out cylinders

Experiments and Modeling of Structural Steel Elements Exposed to Fire. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-5B)

September 1, 2005
Author(s)
Anthony P. Hamins, Alexander Maranghides, Kevin B. McGrattan, Erik L. Johnsson, Thomas J. Ohlemiller, Michelle K. Donnelly, Jiann C. Yang, George W. Mulholland, Kuldeep R. Prasad, S R. Kukuck, Robert Anleitner, Therese P. McAllister
Reconstructing the fires and their impact on structural components in the World Trade Center (WTC) buildings on September 11, 2001, requires extensive use of computational models. For the use of such models to be a viable investigative tool, it is

Coping with Overload on the Network Time Protocol Public Servers

December 7, 2004
Author(s)
David Mills, Judah Levine, Richard Schmidt, David Plonka
The public time servers operated by USNO and NIST provide time synchronization, directly or indirectly, to millions of Internet computers today. The load in the form of processor cycles and network traffic has doubled in the last two years and could

Differential Cross Sections for Elastic Scattering of Electrons by Atoms and Solids

July 1, 2004
Author(s)
Aleksander Jablonski, Francesc Salvat, Cedric J. Powell
Differential cross sections (DCSs) for elastic scattering of electrons by neutral atoms are extensively used in studies of electron transport in solids and liquids. A new NIST database has recently been released with DCSs calculated from a relativistic

Adaptive Characterization of Jitter Noise in Sampled High-Speed Signals

October 1, 2003
Author(s)
Kevin J. Coakley, Chih-Ming Wang, Paul D. Hale, Tracy S. Clement
We estimate the root-mean-square (RMS) value of timing jitter noise in simulated signals similar to measured high-speed sampled signals. The simulated signals are contaminated by additive noise, timing jitter noise, and time shift errors. Before estimating

A Semantic Web Service Framework to Intelligent Distributed Manufacturing

August 1, 2003
Author(s)
Boonserm Kulvatunyou, Hyunbo Cho, Y J. Son
As markets become unexpectedly turbulent with a shortened product life cycle and a power shift towards buyers, the need for methods to rapidly and cost-effectively develop products, production facilities and supporting software is becoming urgent. The use

Studies of Fingerprint Matching Using the NIST Verification Test Bed (VTB)

July 1, 2003
Author(s)
Charles L. Wilson, Craig I. Watson, Michael D. Garris, R. A. Hicklin
A series of fingerprint matching studies have been conducted on an experimental laboratory system called the Verification Test Bed (VTB). The VTB is a collection of commercial off the shelf (COTS) computer hardware, an open-source operating system, and a

Report of Test on Experimental Conditions and Preliminary Results for the International Fire Model Benchmarking And Validation Exercise #3

June 1, 2003
Author(s)
Anthony P. Hamins, Alexander Maranghides, Erik L. Johnsson, Michelle K. Donnelly, Jiann C. Yang, George W. Mulholland
As part of its Fire Risk Research Program, the NRC (Nuclear regulatory Commission) and NIST (National Institute of Standards and Technology) are participating in an International Collaborative Fire Model Project (ICFMP) to assess and validate fire computer

Structure and Dimensions of PAMAM/PEG Dendrimer-Star Polymers

March 1, 2003
Author(s)
R C. Hedden, Barry J. Bauer
Dendrimer-star polymers are prepared by grafting monofunctional poly(ethylene glycol) (PEG) chains of low polydispersity onto the terminal groups of poly(amidoamine) (PAMAM) dendrimers. A novel gel permeation chromatography technique is used to calculate
Displaying 8901 - 8925 of 9860
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