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Displaying 37701 - 37725 of 74220

Station Nightclub Fire Investigation Status Report.

October 19, 2004
Author(s)
William L. Grosshandler
National Construction Safety Team (NCST) Advisory Committee Meeting, Presentation: The Station Nightclub Fire Investigation Status Report, October 20, 2004

Crystal Chemistry and Crystallography of the Aurivillius Phase Bi 5 AgNb 4 O 18

October 18, 2004
Author(s)
Winnie K. Wong-Ng, Qingzhen Huang, Lawrence P. Cook, Igor Levin, James A. Kaduk, Alan D. Mighell, J Suh
Bi 5AgNb 4O 18 is a new phase, which was discovered during the phase equilibrium study of the Bi 2O 3-Ag 2O-Nb 2O 5 system. Bi 5AgNb 4O 18 was prepared at 750 C and is stable in air up to its melting temperature of 1160.1 5.0 C. Results of a Rietveld

Reference Scaffolds for Characterization of Porosity (Poster)

October 18, 2004
Author(s)
John A. Tesk
ASTM Task Force F04.42.06 was formed with the objective of developing reference scaffolds, with the initial thrust focused on porosity.Three dimensional test-scaffolds were fabricated by two 3-Dimensional rapid prototyping methods. Visual examinations and

Estimating Multiple-Reflection Uncertainties in Spherical Near-Field Measurements

October 17, 2004
Author(s)
Michael H. Francis, Jeffrey R. Guerrieri, Katherine MacReynolds, Ronald C. Wittmann
We propose a method to estimate multiple-reflection effects on test-antenna pattern and gain uncertainties in the far field derived from spherical near-field measurements. To estimate these uncertainties we make a near-field measurements on two spheres

Practical Implementation of Probe-Position Correction in Near-field Planar Scanning Measurements

October 17, 2004
Author(s)
Jeffrey R. Guerrieri, Katherine MacReynolds, Michael H. Francis, Ronald C. Wittmann, Douglas T. Tamura
Planar near-field measurements require taking amplitude and phase data on an accurate and equal space grid on the plane in front of the antenna under test. The position accuracy on this grid has been determined to be '/50. As frequencies become higher

Adaptive Road Detection through Continuous Environment Learning

October 15, 2004
Author(s)
M Foedissch, A Takeuchi
The Intelligent Systems Division of the National Institute of Standards and Technology has been engaged for several years in developing real-time systems for autonomous driving. A road detection program is an essential part of the project. Previously we

New Insights into Threshold Voltage Shifts for Ultrathin Gate Oxides

October 15, 2004
Author(s)
Da-Wei Heh, Eric M. Vogel, J B. Bernstein
Threshold voltage (Vth) shifts of p- and n-channel MOSFETs during a stress are analyzed from both experiment and simulation. The result of the analysis showed that Vth shift is mainly induced by the carrier channel mobility degradation. This result can

NVNA Users’ Forum: Mission and Overview

October 12, 2004
Author(s)
Catherine A. Remley, Dominique Schreurs, Wendy Van Moer
This paper introduces the NVNA Users' Forum, an informal discussion group devoted to sharing information and issues related to instrumentation utilized in vector large-signal network analysis of microwave circuits and systems that contain nonlinear

Wide-Band Slot Antennas with CPW Feed Lines: Hybrid and Log-Periodic Designs

October 11, 2004
Author(s)
Alpesh Bhobe, Christopher L. Holloway, Melinda Piket-May, Richard Hall
In microwave and millimeter wave applications, slot antennas fed by coplanar waveguides (CPW) are receiving increasing attention. These antennas have several useful properties, such as wider bandwidth as compared to microstrip patch antennas and easier
Displaying 37701 - 37725 of 74220