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Displaying 37376 - 37400 of 143806

Precise Measurement of Lunar Spectral Irradiance at Visible Wavelengths

November 12, 2013
Author(s)
Keith R. Lykke, John T. Woodward IV, Allan W. Smith, Claire E. Cramer
We report a measurement of lunar spectral irradiance with an uncertainty below 1 % from 420 nm to 1000 nm. This measurement uncertainty meets the stability requirement for many climate data records derived from satellite images, including those for

Successive Frequency Domain Minimization for Time Delay Estimation

November 12, 2013
Author(s)
Ismet Sahin, Marwan A. Simaan, Anthony J. Kearsley
Estimating time delays for signal alignment is important for many applications. This paper extends a successful frequency domain cost function minimization algorithm capable of estimating time delays to within a fraction of sampling periods. Since a narrow

High resolution gamma-ray spectroscopy with a microwave-multiplexed TES array

November 11, 2013
Author(s)
Omid Noroozian, John A. Mates, Douglas A. Bennett, Justus A. Brevik, Joseph W. Fowler, Jiansong Gao, Robert D. Horansky, Kent D. Irwin, Daniel R. Schmidt, Joel N. Ullom, Zhao Kang
We demonstrate the first gamma-ray spectroscopy with a microwave-multiplexed two-pixel TES(transition-edge sensor) array. We measured a $^{153}$Gd photon source and achieved an energy resolution of 63 eV full-width-at-half-maximum (FWHM) at 97 keV and an

Proposed E57.02 Range Measurement Performance Standard for Medium Range 3D Imaging Systems

November 11, 2013
Author(s)
David MacKinnon, Luc Cournoyer, Kamel Saidi, Geraldine Cheok, Robert Bridges, Darin Ingimarson
We present the proposed standard ASTM E57.02 "Test Method to Evaluate the Range Measurement Performance of 3D Imaging Systems in the Medium Range" (Work Item ASTM WK12373). The stated purpose of the standard is to provide metrics and procedures to evaluate

On the Determination of Carbon by PGAA

November 10, 2013
Author(s)
Rolf L. Zeisler, Rick L. Paul, Jeffrey A. Fagan, Zsolt R?vay, Stefan S?llradl
Determination of carbon was achieved with reduction of background in prompt gamma activation analysis.

Application of a Natural Ventilation System Design Tool To A School Building

November 8, 2013
Author(s)
Steven J. Emmerich, William S. Dols, Brian J. Polidoro
A software tool to aid in the design of natural ventilation systems has recently been udpated. This update implements a general method for sizing of natural ventilation components, which allows direct consideration of stack and wind-driven airflow. The

Dielectrophoretic Trapping of P19 Cells on Indium Tin Oxide based Microelectrode Arrays

November 8, 2013
Author(s)
Aveek Gangopadhyay, Saugandhika Minnikanti, Darwin Reyes-Hernandez, Mulpuri V. Rao, Nathalia Peixoto
A microfabricated device comprised of a microelectrode array (MEA) and a microfluidic channel is presented here for the purpose of trapping cells using positive dielectrophoresis (DEP). Transparent indium tin oxide (ITO) electrodes are patterned in an

Dissecting Interactions Among Indoor Environmental Quality Factors

November 8, 2013
Author(s)
Hal Levin, Steven Emmerich
Many aspects of indoor environmental quality (IEQ) and the technologies that control or otherwise affect it are interactive and often closely connected. This has important implications for the design and construction of buildings as well as for operation
Displaying 37376 - 37400 of 143806
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