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Displaying 33926 - 33950 of 74253

Terminology for High-Speed Sampling-Oscilloscope Calibration

December 1, 2006
Author(s)
Dylan Williams, Tracy S. Clement, Paul D. Hale, Andrew Dienstfrey
We discuss procedures for calibrating high-speed sampling oscilloscopes at the National Institute of Standards and Technology, and the terminology associated with those calibrations. The discussion clarifies not only the calibration procedures, but how to

Using Laser-Cooled Atoms as a Focused Ion Beam Source

December 1, 2006
Author(s)
James L. Hanssen, E Dakin, Jabez McClelland, M Jacka
The authors describe a new method for creating a high quality focused ion beam using laser-cooled neutral atoms in a magneto-optical trap as an ion source. They show that this new technique can provide spot resolutions and brightness values that are better

Advancing Factory-Wide Data Quality for APC Applications

November 30, 2006
Author(s)
Harvey Wohlwend, Gino Crispieri, Ya-Shian Li-Baboud
Accurate clock synchronization and time stamping plays a significant role in ensuring data quality as the semiconductor industry faces an imminent data explosion with the deployment of Interface A. Standards and Guidelines significantly ease the deployment

Approximating Periodic Solutions of Autonomous Delay Differential Equations

November 30, 2006
Author(s)
David E. Gilsinn
Machine tool chatter has been characterized as isolated periodic solutions or limit cycles of delay differential equations. Determining the amplitude and frequency of the limit cycle is sometimes crucial to understanding and controlling the stability of

Evidence for Internal Stresses Induced by Nanoimprint Lithography

November 30, 2006
Author(s)
Hyun Wook Ro, Yifu Ding, Hae-Jeong Lee, Daniel R. Hines, Ronald L. Jones, Eric K. Lin, Alamgir Karim, Wen-Li Wu, Christopher L. Soles
The thermal embossing form of nanoimprint lithography is used to pattern arrays of nanostructures into several different polymer films. The shape of the imprinted patterns is characterized with nm precision using both X-ray scattering and reflectivity

Firebrand Production From Burning Vegetation

November 30, 2006
Author(s)
Samuel L. Manzello, Alexander Maranghides, William E. Mell, Thomas G. Cleary, Jiann C. Yang
A series of real scale fire experiments were performed to determine the size and mass distribution of firebrands generated from Douglas-Fir (pseudotsuga menziesii) trees. The results of the real scale fire experiments were used to determine firebrand sizes

Recommendation for Obtaining Assurances for Digital Signature Applications

November 30, 2006
Author(s)
Elaine B. Barker
Entities participating in the generation or verification of digital signatures depend on the authenticity of the process. This Recommendation specifies methods for obtaining the assurances necessary for valid digital signatures: assurance of domain

Ring Expansion Reactions in the Thermal Decomposition of t-Butyl-1,3-Cyclopentadiene

November 30, 2006
Author(s)
William S. McGivern, Jeffrey A. Manion, Wing Tsang
The thermal decomposition of t-butyl-1,3-cyclopentadiene has been investigated in single pulse shock tube studies at shock pressures of 182 260 kPa and temperatures of 996 1127 K. Isobutene (2-methylpropene), 1,3-cyclopentadiene, and toluene are observed

A Taxonomy of Definitions for Usability Studies in Biometrics

November 27, 2006
Author(s)
Ross J. Micheals, Brian C. Stanton, Mary F. Theofanos, Shahram Orandi
Historically, usability research strives to focus on user behavior in a manner that is as system independent as possible. Although ¿ISO/IEC JTC 1/SC 37 Standing Document 2 ¿ Harmonized Biometric Vocabulary, Draft N1779¿ provides a foundation towards common

Real-Time Speaker Verification with a Microphone Array

November 27, 2006
Author(s)
G. Mei, R. Xu, R. Lao, C. Kwan, Vincent M. Stanford
Real-time speaker verification, with speech acquired using the NIST Mk-III microphone array and an autodirective beamforming algorithm, is demonstrated. The software and hardware backbone of the demonstration is the NIST Smart Flow System and Mk-III Array

Synchronizing Multimodal Data Streams Acquired Using Commodity Hardware

November 27, 2006
Author(s)
Martial Michel, Vincent M. Stanford
We have developed tools and techniques that allow video frame level synchronization of multiple free-running commodity video cameras, microphones, and computer nodes using non-realtime operating systems. The techniques rely on physical audiovisual
Displaying 33926 - 33950 of 74253
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