Results 21 to 30 of about 4,028,916 (205)

Bending and free vibration of functionally graded beams using various higher-order shear deformation beam theories [PDF]

open access: yes, 2012
In this paper, various higher-order shear deformation beam theories for bending and free vibration of functionally graded beams are developed. The developed theories account for higher-order variation of transverse shear strain through the depth of the ...
Thai, Huu-Tai, Vo, Thuc
core   +1 more source

Multi-Beam Satellite Seeking and Acquisition Method for Satcom-on-the-Move Array Antenna on a High Maneuverability Carrier

open access: yesApplied Sciences, 2023
When the carrier of the Satcom-on-the-Move (SOTM) antenna is in a high maneuvering state of motion, the accuracy of the array antenna beam pointing towards the satellite may decrease, which may cause a decline in communication effectiveness for SOTM or ...
Lei Han   +3 more
doaj   +1 more source

On the analysis of switched-beam antennas for the W-CDMA downlink [PDF]

open access: yes, 2004
Smart antennas are widely recognized as an enabling technology for addressing the demand of future wireless network capacity when employed in place of traditional fixed-coverage sector antennas.
Beach, Mark   +5 more
core   +1 more source

Research on Adaptive Transmit Diversity Strategy for Reducing Interference in Underwater Optical Multi-Beam Non-Orthogonal Multiple Access Systems

open access: yesPhotonics, 2023
With the rapid development of the underwater Internet of Things (IoT), the number of underwater communication nodes is rapidly increasing. The access capacity of a traditional multi-antenna communication system is limited by the number of transmitting ...
Yanlong Li   +5 more
doaj   +1 more source

A Transmitter Design for the Multi-beam CC-OFDM Azimuth Scanning MIMO Radar

open access: yesIEEE Access, 2022
A conventional phased array radar provides a high gain by transmitting coherent signals over a large number of antenna elements. However, it does not provide a full time-on-target because it produces a beam that scans the whole angular view of the radar.
Devy Kuswidiastuti   +2 more
doaj   +1 more source

Measurement of neutrino oscillation parameters from muon neutrino disappearance with an off-axis beam [PDF]

open access: yes, 2013
The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters.
A. Ereditato   +999 more
core   +3 more sources

Investigation of the shape transferability of nanoscale multi-tip diamond tools in the diamond turning of nanostructures [PDF]

open access: yes, 2014
In this article, the shape transferability of using nanoscale multi-tip diamond tools in the diamond turning for scale-up manufacturing of nanostructures has been demonstrated.
Luo, Xichun, Tong, Zhen, Liang, Yingchun
core   +1 more source

Multi-Beam Radiation Intensity Control of a Reflectarray Antenna Using Unit Cell Arrangement [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
In this paper, multi-beam radiation intensity control of a reflectarray antenna by means of unit cell arrangement is proposed and investigated. A metasurface is designed to achieve reflection in a specific direction, and a circular ring structure with a ...
Jae-Gon Lee
doaj   +1 more source

The Influence of Interpolated Point Location and Density on 3D Bathymetric Models Generated by Kriging Methods: An Application on the Giglio Island Seabed (Italy)

open access: yesGeosciences, 2022
In relation to 3D bathymetric modelling, this article aims to analyze the performance of Kriging approaches in dependence of the location and density of the measured depth points.
Emanuele Alcaras   +2 more
doaj   +1 more source

Ion beam analysis based on cellular nonlinear networks [PDF]

open access: yes, 2011
The development of a non- destructive measurement method for ion beam parameters has been treated in various projects. Although results are promising, the high complexity of beam dynamics has made it impossible to implement a real time process control up
Ratzinger, Ulrich   +7 more
core   +2 more sources

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