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Displaying 8126 - 8150 of 143816

Wind-Excited Torsional Response of Tall Buildings

October 12, 2021
Author(s)
I Venanzi, William P. Fritz
A procedure for the evaluation of wind-induced torsional vibrations of tall buildings is proposed. The procedure is capable of accounting for the time-dependent eccentricity of the aerodynamic forces on the building surface with respect to the elastic

Wind-Tunnel Model Scale and Estimates of Wind Effects on Low-Rise Buildings

October 12, 2021
Author(s)
Michael A. Riley, Emil Simiu
Although the wind load provisions of many modern building codes are based on the results of wind tunnel testing, some effects of model scale and pressure tap quantity are still not well understood. Using test data obtained at two different scales for a low

Wireless Ad-hoc Network for Trades Tracking

October 12, 2021
Author(s)
D P. Starin, William C. Stone
The NIST Construction Metrology and Automation Group (CMAG), at the suggestion of various members of the CII FIATECH consortium, investigated the possibility of developing an economical, rugged system for approximate localization of crafts and trades

X-Ray Diffraciton and the Existence of Long Range Internal Stresses

October 12, 2021
Author(s)
M A. Delos-Reyes, M E. Kassner, Lyle E. Levine
Long range internal stresses (LRIS) are often used to explain various aspects of the mechanical behavior of materials. Recent experiments by the authors indicate an absence of measurable LRIS. X-ray line asymmetry, however, has long been interpreted as an

X-Ray Diffraction Study of the Optimization of MgO Growth Conditions for Magnetic Tunnel Junctions

October 12, 2021
Author(s)
O Se Young, C G. Lee, Alexander J. Shapiro, William F. Egelhoff Jr., Mark D. Vaudin, Jennifer L. Klamo, J Mallett, Philip Pong
MgO based magnetic tunnel junctions (MTJs) show large tunneling magnetoresistance (TMR) effects and are currently the most promising technology for the applications in magnetoelectronics devices. Conventional MTJs with amorphous AlOx barriers yield TMR

X-Ray Spectroscopy and Calibrations in the 50 eV to 60 keV Range

October 12, 2021
Author(s)
J Seely, Uri Feldman, J. Weaver, Lawrence T. Hudson
Spectrometers have been developed to record x-ray spectra in the energy range 50 eV to 60 keV. The dispersion elements are transmission crystals for energies higher than approximately 11 keV, reflection crystals for 1 keV to 20 keV, and transmission

Improved shadow correction for the Marine Optical BuoY, MOBY

October 11, 2021
Author(s)
Kenneth Voss, Edouard Leymarie, Stephanie Flora, B. Carol Johnson, Arthur Gleason, Mark Yarbrough, Michael Feinholz, Terrance Houlihan
A 3-D instrument self-shading correction has been developed for the MOBY upwelling radiance measurements. This correction was tested using the 23 year time series of MOBY measurements, at the Lanai, Hawaii site. The correction is small (less than 2%)

Microwave characterization of graphene inks

October 11, 2021
Author(s)
Jan Obrzut, Ana C. M. Moraes
Systematic charge transport characterization of solution-processed graphene inks using ethyl cellulose polymer as a binder/stabilizer, showed graphene patterns with high mobility ( 160 cm2 V-1 s-1), low energy gap, thermally activated charge transport and

Sequential Bayesian experiment design for adaptive Ramsey sequence measurements.

October 11, 2021
Author(s)
Robert D. McMichael, Sergey Dushenko, Sean Blakley
The Ramsey sequence is a canonical example of a quantum phase determination for a spin qubit, but when readout fidelity is low, as with NV centers, measurement efficiency can be increased by focusing measurement resources on the most productive settings
Displaying 8126 - 8150 of 143816
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