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Search Publications

NIST Authors in Bold

Displaying 26101 - 26125 of 73930

Validation of Two-Sample Bootstrap in ROC Analysis on Large Datasets Using AURC

October 11, 2010
Author(s)
Jin Chu Wu, Alvin F. Martin, Raghu N. Kacker
Sampling variability can result in uncertainties of measures. The nonparametric two-sample bootstrap method has been used to compute uncertainties of measures in receiver operating characteristic (ROC) analysis on large datasets, such as the standard error

Active Millimeter-Wave Imaging: Detection of Concealed Weapons

October 10, 2010
Author(s)
Randy Direen, David R. Novotny, Katherine MacReynolds
Images are constructed from data collected with a near- eld planar scannar and a network analyzer. Data are collected at millimeter-wave frequencies. This imaging system is used to image both metal and nonmetal objects.

An Inconvenient Truth About Tunneled Authentications

October 10, 2010
Author(s)
Katrin Hoeper, Lidong Chen
In recent years, it has been a common practice to execute client authentications for network access inside a protective tunnel. Man-in-the-middle (MitM) attacks on such tunneled authentications have been discovered early on and cryptographic bindings are

Link Relationship Measurements in Load-Modulated UHF RFID

October 10, 2010
Author(s)
Daniel G. Kuester, David R. Novotny, Jeffrey R. Guerrieri
This paper investigates the relative roles of the forward and reverse links in determining the operational range of passive UHF RFID systems. The relative importance the links are discussed first in the free field as a first-order model. We then present

Microencapsulated POSS in Cellulose Using 1-Ethyl-3-Methylimidazolium Acetate

October 10, 2010
Author(s)
Douglas M. Fox, Mauro Zammarano, Jeffrey W. Gilman
Polyhedral oligomeric silsesquioxane (POSS) and cellulose were reacted in the ionic liquid, 1-ethyl-3-methylimidazolium acetate (EmiAc). Side reactions between the EmiAc and each reactant were prevalent, but use of water as the coagulating solvent produced

Contact Resistance of Flexible, Transparent Carbon Nanotube Films with Metals

October 7, 2010
Author(s)
Hua Xu, Lei Chen, Liangbing Hu, Nikolai B. Zhitenev
We studied the contact properties of different metals to flexible optically-transparent single-walled carbon nanotube (SWCNTs) films. The SWCNT films are deposited on flexible polyethylene terephthalate (PET) substrate and patterned in test structures

Practical Combinatorial Testing

October 7, 2010
Author(s)
David R. Kuhn, Raghu N. Kacker, Yu Lei
Combinatorial testing can help detect problems like this early in the testing life cycle. The key insight underlying t-way combinatorial testing is that not every parameter contributes to every fault and most faults are caused by interactions between a

Thermochemistry of Ammonium Nitrate, NH4NO3, in the Gas Phase

October 7, 2010
Author(s)
Karl K. Irikura
Hildenbrand and coworkers have shown recently that the vapor above solid ammonium nitrate includes molecules of NH4NO3, not only NH3 and HNO3 as previously believed. Their measurements led to thermochemical values that imply an enthalpy change of D298 = 98

Modeling and Simulation Analysis Types for Sustainable Manufacturing

October 6, 2010
Author(s)
Deogratias Kibira, Guodong Shao, Yung-Tsun T. Lee
Sustainable manufacturing could be further be promoted by the effective use of Modeling and Simulation (M&S) applications. These applications can evaluate manufacturing operations in light of increasing legislation and awareness for environmental

Modeling Smart Grid Applications with Co-Simulation

October 5, 2010
Author(s)
Timothy Godfrey, Mullen Sara, Roger C. Dugan, Craig Rodine, David W. Griffith, Nada T. Golmie
Analysis of complex Smart Grid applications require simulation of communications networks and the power system. Analytical models of the communication systems provide a tool for examining the aggregate behavior of the system. An event level analysis in the

A Methodology to Evaluate Wireless Technologies for the Smart Grid

October 4, 2010
Author(s)
Michael R. Souryal, Camillo A. Gentile, David W. Griffith, David E. Cypher, Nada T. Golmie
This paper presents a methodology for assessing the suitability of various wireless technologies for meeting the communication requirements of Smart Grid applications. It describes an approach for translating application requirements to link traffic

International Comparability in Circular Dichroism: II

October 4, 2010
Author(s)
Curtis W. Meuse, Jascindra Ravi, Paulina Rakowska, Tommaso Garfagnini, Alex E. Knight, Philippe Charlet, Julie D. Lorenz, Christopher Jones, David F. Plusquellic, Frank Wien, Liqing Wu
A previous inter-laboratory study, CCQM P59, showed that there was a poor level of comparability between laboratories in circular dichroism spectroscopy. In a follow-up study reported here, we achieved our goal of demonstrating improved comparability and

Nanoslinky: DNA Entropophoresis Down a Nanofluidic Staircase

October 4, 2010
Author(s)
Elizabeth A. Strychalski, Laurie E. Locascio, Samuel M. Stavis, Michael Gaitan
Almost all nanofluidic devices for biopolymer analysis have been limited by one or two confining structural dimen-sions or the application of external forces for biopolymer manipulation, which has restricted the scope of related lab-on-a-chip technology

NIST WMD update presentation for NISA October, 2010

October 4, 2010
Author(s)
John W. Barton
The presentation will cover recent and upcoming events, changes, and the focus for the NIST Weights and Measures Division (WMD). Topics will include the agency-wide restructuring of NIST, current projects underway at WMD, NIST Handbook 44 changes for 2011

On Multiple-Method Studies

October 4, 2010
Author(s)
Chih-Ming Wang, Hariharan K. Iyer
In this paper we review statistical models that describe measurements from a multiple-method study such as in the development of a reference material. We also review requirements for the so-called GUM compliance as this appears to be an important criterion

On the privacy threats of electronic poll books

October 4, 2010
Author(s)
Stefan Popoveniuc, John M. Kelsey
Electronic poll books make the process of verifying that a voter is authorized to vote and issuing her a ballot faster and more convenient. However, they also introduce a privacy risk: if both the electronic poll book and voting machine or optical scanner

Chromatographic Methods for the Quantification of Free and Chelated Gadolinium Species in MRI Contrast Agent Formulations

October 3, 2010
Author(s)
Danielle Cleveland, Stephen E. Long, Lane C. Sander, William C. Davis, Karen E. Murphy, Catherine A. Rimmer, Lorena Francini, Anil K. Patri
Speciation measurements of gadolinium in liposomal MRI contrast agents are complicated by the presence of emulsifiers, surfactants, and therapeutic agents in the formulations. The present paper describes two robust, hyphenated chromatography methods for

Infrared Spectra of Small Molecular Ions Trapped in Solid Neon

October 3, 2010
Author(s)
Marilyn E. Jacox
The infrared spectrum of a molecular ion provides a unique signature for that species, gives information on its structure, and is amenable to remote sensing. It also serves as a comparison standard for refining ab initio calculations. Experiments in this
Displaying 26101 - 26125 of 73930
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