Results 31 to 40 of about 114,062 (259)

A Gimballed Control Moment Gyroscope Cluster Design for Spacecraft Attitude Control

open access: yesAerospace, 2021
This paper addresses the problem of singularity avoidance in a cluster of four Single-Gimbal Control Moment Gyroscopes (SGCMGs) in a pyramid configuration when used for the attitude control of a satellite by introducing a new gimballed control moment ...
Charalampos Papakonstantinou   +2 more
doaj   +1 more source

Data for indirect load case estimation of ice-induced moments from shaft line torque measurements

open access: yesData in Brief, 2018
During ice navigation, blade measurements of ice-induced moments on ship propellers, are challenged by the harsh operating environment. To overcome this problem, shaft line measurements are performed inboard, and the required propeller loads are ...
R.J.O. de Waal, A. Bekker, P.S. Heyns
doaj   +1 more source

Study on Full Time Dynamics Simulation of Two-track Rocket Sled

open access: yesHangkong gongcheng jinzhan, 2020
The analysis of vibration response of two-track rocket in experiment at each moment is the urgent problem in theory study and experiment field of the rocket sled.
GU Kaixuan   +3 more
doaj   +1 more source

Quasi-analyticity and Determinacy of the Full Moment Problem from Finite to Infinite Dimensions [PDF]

open access: yes, 2016
28 pages, Stochastic and Infinite Dimensional Analysis, Chapter 9, Trends in Mathematics, Birkh\"auser Basel ...
openaire   +3 more sources

Full-Scale Testing on Seismic Performance of Surge Arrester with Retrofitted Composite Insulators

open access: yesBuildings, 2022
In electrical substations, glass-fibre reinforced polymer (GFRP) insulators provide an alternative to porcelain insulators for better seismic performance.
Sheng Li   +5 more
doaj   +1 more source

Mechanical behavior improving study of concrete deck of main beam at pylon root of composite beam cable-stayed bridge [PDF]

open access: yesArchives of Civil Engineering
Steel-concrete composite beam has been increasingly applied to large span cable-stayed bridges. It takes full advantage of the material properties of steel and concrete.
Tianyu Qi   +3 more
doaj   +1 more source

The Complexity of Online Bribery in Sequential Elections (Extended Abstract) [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2019
Prior work on the complexity of bribery assumes that the bribery happens simultaneously, and that the briber has full knowledge of all voters' votes. But neither of those assumptions always holds. In many real-world settings, votes come in sequentially,
Edith Hemaspaandra   +2 more
doaj   +1 more source

On entropy-constrained Gaussian channel capacity via the moment problem [PDF]

open access: yes
We study the capacity of the power-constrained additive Gaussian channel with an entropy constraint at the input. In particular, we characterize this capacity in the low signal-to-noise ratio regime, as a corollary of the following general result on a ...
Shamai, Shlomo   +2 more
core   +1 more source

Spatio-Temporal Series Remote Sensing Image Prediction Based on Multi-Dictionary Bayesian Fusion

open access: yesISPRS International Journal of Geo-Information, 2017
Contradictions in spatial resolution and temporal coverage emerge from earth observation remote sensing images due to limitations in technology and cost.
Chu He   +4 more
doaj   +1 more source

Scaled-Model Radar Cross-Section Measurement: The Influence of the Scattered Field under Gaussian Beam Illumination—A Theoretical Analysis

open access: yesSensors, 2023
At microwave frequencies, radar cross-section (RCS) measurements are usually performed by placing the target in the far-field region of the antenna. The wavefront of the radiating field from the antenna can be approximated as planar, ensuring that the ...
Yi Xuan Ang, Hoi-Shun Lui
doaj   +1 more source

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