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Displaying 29651 - 29675 of 74137

Derivation of the MODIS Aqua Point-Spread Function for Ocean Color Bands

September 11, 2008
Author(s)
Gerhard Meister, Yuqin Zong, Charles R. McClain
The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Earth Observing System (EOS) Aqua platform has 9 spectral bands with center wavelengths from 412nm to 870nm that are used to produce the standard ocean color data products. Ocean scenes

Identity management standards for product life cycle of electronic parts

September 10, 2008
Author(s)
YaShian Li-Baboud, Eric D. Simmon, Yaw S. Obeng
The high profit opportunities, the diffused outsourcing of manufacturing and the structure of distribution networks make the electronics and its components susceptible to counterfeiting. Distinguishing the genuine article from counterfeit is increasingly

Usability Testing of Face Image Capture for US Ports of Entry

September 10, 2008
Author(s)
Mary F. Theofanos, Brian C. Stanton, Charles L. Sheppard, Ross J. Micheals
Abstract The requirements necessary for taking a successful face picture are arguably the least constrained of any biometric. The camera must be operational, and the subject must be illuminated sufficiently & facing the camera. Yet, a significant portion

A Robust Model-Based Approach to Indoor Positioning Using Signal Strength

September 9, 2008
Author(s)
Kamran Sayrafian, Dominik Kasper
A simple technique to estimate the position of a mobile node inside a building is based on the Received Signal Strength (RSS). In previous publications, we investigated the effectiveness of using circular array antennas and beamforming in order to enable

Accuracy Considerations for Critical Dimension Semiconductor Metrology

September 9, 2008
Author(s)
Ronald G. Dixson, Ndubuisi G. Orji, B Bunday, J Allgair
As the size of integrated circuit features continues to decrease, the accuracy of measurements becomes more important. Due to greater emphasis on precision rather than accuracy, many of the measurements made in semiconductor fabs are not traceable to the

Constant Pressure and Vacuum Transporter for 1 kg Mass Standards

September 8, 2008
Author(s)
Vincent J. Lee, Zeina J. Kubarych
This report describes the design and intended use of a constant pressure and vacuum transporter for transferring 1 kg mass standards between different locations and environments without compromising the atmospheric conditions and therefore maintaining

Source Stirring Technique for Reverberation Chambers; Experimental Investigation

September 8, 2008
Author(s)
Galen H. Koepke, Christopher L. Holloway, John M. Ladbury, David A. Hill, Valter Primiani, Paola Russo, Carlo Monteverde
The paper shows the source stirring technique from an experimental point of view. This technique exhibits good statistics for S21. The results illustrate that the field in the cavity has very similar characteristics to the field in a reverberation chamber

Use of Reverberation Chamber to Simulate the Power Delay Profile of a Wireless Environment

September 8, 2008
Author(s)
Christopher L. Holloway, E Genender, Catherine A. Remley, John M. Ladbury, Galen H. Koepke, H Garbe
Multipath propagation environment effects, such as frequency-selective fading, have a strong impact on the quality of the wireless channel. For example, multipath can impact bit error rate (BER) differently than Gaussian noise. For testing wireless devices

Comparison of statistical consistency and metrological consistency

September 6, 2008
Author(s)
Raghu N. Kacker, Ruediger Kessel, Klaus-Dieter Sommer, Xin Bian
The conventional concept of consistency in multiple evaluations of the same measurand is based on statistical error analysis. This concept is based on regarding the evaluations as realizations from sampling probability distributions of potential

Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation

September 5, 2008
Author(s)
Andrew A. Herzing, Christopher J. Kiely, Albert F. Carley, Graham J. Hutchings
Gold nanocrystals absorbed on metal oxides have exceptional properties in oxidation catalysis, including the oxidation of carbon monoxide at ambient temperatures, but the identification of the active catalytic gold species among the many present on real

Assignment, Fit, and Theoretical Discussion of the nu-10 Band of Acetaldehyde Near 509 cm -1

September 4, 2008
Author(s)
I Kleiner, N Moazzen-Ahmadi, A R. McKellar, Thomas A. Blake, G Moruzzi, Jon T. Hougen
The lowest small-amplitude vibration in acetaldehyde (CH3CHO) is the in-plane aldehyde scissors mode ?10 at 509 cm?1. This mode lies about 100 cm?1 above the top of the barrier to internal rotation of the methyl group and is relatively well separated from
Displaying 29651 - 29675 of 74137