Results 21 to 30 of about 2,107,464 (275)

The required acoustic parameters simplification of invisibility cloaks and concentrators using the impedance-tunable coordinate transformation

open access: yesScientific Reports, 2021
Transformation acoustics, as an unconventional theory, provides a powerful tool to design various kinds of acoustic devices with excellent functionalities.
Jun Cao, Fenghua Qi, Senlin Yan
doaj   +1 more source

A New Way for Cartesian Coordinate Transformation and Its Precision Evaluation

open access: yesRemote Sensing, 2022
High-precision coordinate transformation is vital for high-quality data fusion involving different coordinate systems. The transformation precision is mainly evaluated by the transformation parameters’ estimation precision, the root mean square error ...
Ronghua Yang   +4 more
doaj   +1 more source

New expression for the functional transformation of the vector Cramér-Rao lower bound [PDF]

open access: yes, 2015
Assume that it is desired to estimate α = f(θ), where f(·) is an r-dimensional function. This paper derives the general expression for the functional transformation of the vector Cramér-Rao lower bound (CRLB). The derived bound is a tight lower bound on
Kennedy, Rodney   +2 more
core   +1 more source

Predicting transformers oil parameters

open access: yes2009 IEEE Electrical Insulation Conference, 2009
In this paper different configurations of artificial neural networks are applied to predict various transformers oil parameters. The prediction is performed through modeling the relationship between the transformer insulation resistance extracted from the Megger test and the breakdown strength, interfacial tension, acidity and the water content of the ...
Shaban, Khaled   +2 more
openaire   +2 more sources

Deterministic Superreplication of One-Parameter Unitary Transformations [PDF]

open access: yesPhysical Review Letters, 2015
We show that one can deterministically generate out of $N$ copies of an unknown unitary operation up to $N^2$ almost perfect copies. The result holds for all operations generated by a Hamiltonian with an unknown interaction strength. This generalizes a similar result in the context of phase covariant cloning where, however, super-replication comes at ...
Dür, W., Sekatski, P., Skotiniotis, M.
openaire   +3 more sources

Analysis of the algorythms accuracy of the plane and space geodetic coordinates transformation

open access: yesGeodesy and Cartography, 2012
The accuracy of the coordinates computed by transformation from one system to another is analysed. Values of transformation parameters are computed by the least-square method taking into account the accuracy of the coordinates of the identical points in ...
Jonas Skeivalas, Robertas Dargis
doaj   +1 more source

Transformation parameters between UCS-2000 and WGS-84

open access: yesGeodesy and Cartography, 2018
According to the Order of the Ministry of Agrarian Policy of Ukraine, published in 2016, about the procedure for using the national coordinate system UCS-2000, this was the first time officially presented parameters of the Helmert transformation from the
Elena Novikova   +4 more
doaj   +1 more source

Estimation of transformation parameters for microarray data [PDF]

open access: yesBioinformatics, 2003
Abstract Motivation and Results: Durbin et al. (2002), Huber et al. (2002) and Munson (2001) independently introduced a family of transformations (the generalized-log family) which stabilizes the variance of microarray data up to the first order.
Durbin, Blythe, Rocke, David
openaire   +3 more sources

Symmetry Transformation Parameters as Classical Dynamic Variables in the Gauge Theory

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2020
A modification of the gauge theory is proposed, in which the set of generalized coordinates is supplemented with symmetry transformation parameters, and the condition is additionally imposed on the latter, which ensures the classical character of their ...
Gorobey Natalia   +2 more
doaj   +1 more source

Based on the combination prediction method for the characteristic parameters prediction of power transmission and transformation equipment

open access: yesEnergy Reports, 2022
The safe and stable operation of power transmission and transformation equipment is the foundation of power grid safety, so the prediction of power transmission and transformation equipment fault is particularly important, and the prediction of the ...
Jiafeng Qin   +4 more
doaj   +1 more source

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