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Search Publications

NIST Authors in Bold

Displaying 28176 - 28200 of 73929

Nanoscale Photoresponse in Blended Organic Photovoltaics

August 16, 2009
Author(s)
Behrang H. Hamadani, Suyong S. Jung, Nikolai B. Zhitenev
Organic solar cells, which have attracted considerable interest over the last few years as low-cost, simply-processed alternatives for harvesting the solar energy, have interesting nanoscale properties; a thorough understanding of which is currently

Angle-resolved Optical Metrology using Multi-Technique Nested Uncertainties

August 15, 2009
Author(s)
Richard M. Silver, Bryan M. Barnes, Hui Zhou, Nien F. Zhang, Ronald G. Dixson
This paper introduces recent advances in scatterfield microscopy using improved normalization and fitting procedures. Reduced measurement uncertainties are obtained through the use of more accurate normalization procedures in combination with better

Applications of artificial neural networks in optical performance monitoring

August 15, 2009
Author(s)
Jeffrey A. Jargon, Xiaoxia Wu, Ronald Skoog, Loukas Paraschis, Alan Willner
Applications using artificial neural networks (ANNs) for optical performance monitoring (OPM) are proposed and demonstrated. Simultaneous identification of optical signal-to-noise-ratio (OSNR), chromatic dispersion (CD), and polarization-mode-dispersion

Conversion of laser optical rotation noise in cesium vapor

August 15, 2009
Author(s)
Ricardo Jimenez Martinez, Svenja A. Knappe, William C. Griffith, John E. Kitching
We have studied the noise in the optical rotation of a linearly polarized laser beam transmitted through a spin-polarized 133Cs vapor as a function of its frequency detuning from the optical resonance. Our measurements demonstrate the direct conversion of

Coalescing GSICS Correction Coefficients

August 14, 2009
Author(s)
Ruediger Kessel
We would like to present a technique to adjust the uncertainty estimates of each point in a time series, so that the variance of the time series is consistent with the uncertainty estimates of its component points. This would allow the uncertainty of the

Dynamic Gravitational Standard for Liquid Flow: Model and Measurements

August 14, 2009
Author(s)
Iosif I. Shinder, Michael R. Moldover
We report progress in testing a dynamic gravimetric standard using both steady and unsteady water flows. For steady flows in the range 10 kg/s to 60 kg/s, the difference between the dynamic standard and NIST s static primary standard was 0.015 % with a

The Calculation of Natural Gas Viscosity

August 14, 2009
Author(s)
Aaron N. Johnson, William Johansen
The calculation of natural gas viscosity has been implemented many different ways including the use of constants. Different methods of calculating natural gas viscosity may produce values with differences as large as 50%. Increasing natural gas prices

Use of ISO/IEC 24727

August 14, 2009
Author(s)
Hildegard Ferraiolo, Teresa T. Schwarzhoff, William I. MacGregor, Hung Dang, Ketan Mehta
This document describes the use of ISO/IEC 24727 in enabling client-applications to access identity credentials issued by different credential issuers.

ENABLING STANDARDS FOR NANOMATERIAL CHARACTERIZATION

August 13, 2009
Author(s)
Vincent A. Hackley, Martin Fritts, James F. Kelly, Anil K. Patri, Alan F. Rawle
A two-day international workshop was convened recently in order to scope out and address the urgent need for standards to accurately characterize the physico-chemical and biological properties of engineered nanomaterials. These standards are needed by

Recommended Practices for Homeland Security Modeling and Simulation

August 13, 2009
Author(s)
Sanjay Jain, Charles McLean
This paper recommends practices for development and deployment of modeling, simulation and analysis (MS&A) tools for homeland security applications. The set of recommended practices applicable to any MS&A application includes: software engineering practice

Performance of a Nanopositioner Controller Filter Compensator

August 12, 2009
Author(s)
Donna Le, Nicholas Dagalakis, Jason J. Gorman, Jae M. Yoo
We describe the use of appropriate type simple resistor and capacitor (RC) compensators, which properly connected to a power amplifier, can improve the dynamic performance of MEMS nanopositioners. Research on compensators led to the design of several

Security and Privacy Issues in Agent-Based Location-Aware Mobile Commerce

August 12, 2009
Author(s)
Tom T. Karygiannis, Emmanouil Antonakakis
Mobile commerce and location-aware services promise to combine the conveniences of both online and offline bricks-and-mortar services. Just as agent-enabled desktop computers can be used to improve a users e-commerce experience, so can agent-enabled mobile

Visualization of Structural Behavior under Fire

August 12, 2009
Author(s)
Dilip K. Banerjee, William J. Hess, Thomas M. Olano, Judith E. Terrill, John L. Gross
An integrated environment was created to study the interaction among fire, heat transfer, and structural deformation from a typical room fire. The fire, thermal, and structural data were linked with a separate 3-D visualization capability, to provide the

Design and Experimental Verification of a 3D Magnetic EZ Antenna at 300 MHz

August 11, 2009
Author(s)
Christopher L. Holloway, Richard Ziolkowski, Chia-Ching Lin, J. A. Nielsen, M. H. Tanielian
Several variations of a 300 MHz version of the electrically small coax-fed three-dimensional (3D) magnetic EZ antenna were designed and tested. The final design was achieved when the impact of the fabrication techniques on its parameters were understood
Displaying 28176 - 28200 of 73929
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