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NIST Authors in Bold

Displaying 32701 - 32725 of 73830

Synthesis and Characterization of Cobalt/Gold Bimetallic Nanoparticles

April 1, 2007
Author(s)
Guangjun Cheng, Angela R. Hight Walker
Cobalt/gold (Co/Au) bimetallic nanoparticles are prepared by synthesizing Au via chemical reduction in the presence of pre-synthesized Co nanoparticles. Transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) absorption spectrometry, and a

The Seventh Intercomparison of Josephson Voltage Standards in North America

April 1, 2007
Author(s)
Yi-hua D. Tang, Clark Hamilton, David Deaver, Harold Parks, Barry Wood
The 7th interlaboratory comparison (ILC) of Josephson Voltage Standards (JVS) at 10 V, sponsored by the National Conference of Standard Laboratories International (NCSLI), took place from April to October 2005 with 15 participating labs. NIST?s traveling

The Use of Portable Fire Extinguishers in Nightclubs: Workshop Summary

April 1, 2007
Author(s)
William L. Grosshandler
The NIST technical investigation into The Station nightclub fire specifically recommended that a study be performed to determine the minimum number and appropriate placement (based upon the time required for access and application in a fully occupied

Toward the SI system based on fundamental constants: weighing the electron

April 1, 2007
Author(s)
Edwin R. Williams
Abstract--A modified International System of units, SI, based on simply specifying exact numeric values of seven physical constants, is described. This ?set of constants? approach fixes the scale for all measurements, and the result is that both base units

Vibration of Tensioned Beams with Intermediate Damper. II: Damper Near Support

April 1, 2007
Author(s)
Joseph A. Main, Nicholas P. Jones
Exact analytical solutions are used to investigate the complex eigenfrequencies of tensioned beams with a viscous damper attached transversely near a support, for which the complex eigenfrequencies remain fairly close to their undamped values. This problem

Ionization of Silicon, Germanium, Tin and Lead by Electron Impact

March 30, 2007
Author(s)
Yong Sik Kim, Philip M. Stone
Cross sections for electron impact ionization of neutral atoms are important in modeling of low temperature plasmas and gases. Cross sections for ionization have been calculated for ionization from ground levels and low-lying metastable levels of Si, Ge

Development of the NIST Rocky Flats Soil Standard

March 29, 2007
Author(s)
Svetlana Nour, James J. Filliben, Kenneth G. Inn
The National Institute of Standards and Technology (NIST) Rocky Flats Soil-II Standard Reference Material (SRM) is being certified through a statistical analysis of results from an interlaboratory comparison of 14 laboratories from 4 countries. The mean

Face Recognition Vendor Test 2006 and Iris Challenge Evaluation 2006 Large-Scale Results

March 29, 2007
Author(s)
P J. Phillips, K W. Bowyer, P J. Flynn, Alice J. O'Toole, W T. Scruggs, Cathy L. Schott, Matthew Sharpe
The Face Recognition Vendor Test (FRVT) 2006 and Iris Challenge Evaluation (ICE) 2006 are independent U.S. Government evaluations of face and iris recognition performance. These evaluations were conducted simultaneously at NIST using the same test

Investigation of Radioactivity in Selected Drinking Water Samples From Maryland

March 29, 2007
Author(s)
Iisa Outola, Svetlana Nour, Hiromu Kurosaki, Kenneth G. Inn, J J. La Rosa, Larry L. Lucas, Peter Volkovitsky, Kevin Koepenick
In 2004, levels of radioactivity exceeding federal drinking water standards were found in two separate areas of Maryland through gross alpha and beta screening measurements. It was desired to know which radionuclides were responsible for the activity and

IPOG: A General Strategy for t-Way Software Testing

March 29, 2007
Author(s)
Yu Lei, Raghu N. Kacker, D. Richard Kuhn, Vadim Okun, James F. Lawrence
Most existing work on t-way testing has focused on 2-way (or pairwise) testing, which aims to detect faults caused by interactions between any two parameters. However, faults can also be caused by interactions involving more than two parameters. In this

Crystallization of Polyethylene Oxide Patterend by Nanoimprint Lithography

March 28, 2007
Author(s)
Brian C. Okerberg, Christopher L. Soles, Jack F. Douglas, Hyun Wook Ro, Alamgir Karim
The crystallization behavior of poly(ethylene oxide) (PEO) films patterned by nanoimprint lithography is studied. The imprinted PEO film consists of parallel lines, approximately 240 nm wide and 320 nm tall, on a 400 nm pitch with a residual layer of

A Preliminary Study of Peer-to-Peer Human-robot Interaction

March 27, 2007
Author(s)
Terrance Fong, Jean C. Scholtz, Julie Shah, Lorenzo Fluckiger, Clayton Kunz, David Lee, John Schreiner, Michael Siegel, Laura Hiatt, Illah Nourbakhsh, Reid Simmons, Robert Ambrose, Robert Burridge, Brian Antonishek, Magda Bugajska, Alan Schultz, Gregory Trafton
The Peer-toPeer Human-Robot interaction (P2P HRI) project is developing techniques to improve task coordination and collaboration between human and robot partners. Our work is motivated by the need to develop effective human-robot teams for space mission

EUV Spectroscopy of Highly Charged Xenon Ions Created Using an Electron Beam Ion Trap

March 27, 2007
Author(s)
K Fahy, E Sokell, G O'Sullivan, A Aguilar, Joshua M. Pomeroy, Joseph N. Tan, John D. Gillaspy
At the NIST Electron Beam Ion Trap (EBIT), extreme-ultraviolet spectra of xenon ions have been recorded using a flat-field spectrometer. The electron beam energy was varied from 180 eV to 8 keV and radiation from charge states Xe6+ to Xe43+ was observed

Metrology for High-Frequency Nanoelectronics

March 27, 2007
Author(s)
Thomas Mitchell (Mitch) Wallis, Atif A. Imtiaz, Hans Nembach, Paul Rice, Pavel Kabos
Two metrological tools for high frequency measurements of nanoscale systems are described: (i) tow/N-port analysis of nanoscale devices as well as (ii) near-field scanning microwave microscopy (NSMM) for materials characterization. Calibrated two/N-port

Comment on the CASIA v1 Iris Dataset

March 26, 2007
Author(s)
P J. Phillips, K W. Bowyer, P J. Flynn
The paper by Ma et al. [1] made a number of contributions to iris recognition including a novel iris recognition algorithm, a benchmark of standard approaches to iris recognition, and the establishment of an iris data set. The data set, Chinese Academy of
Displaying 32701 - 32725 of 73830
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