Results 61 to 70 of about 44,503 (183)

Inversion method for initial tsunami waveform reconstruction [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2015
This paper deals with the application of the r-solution method to recover the initial tsunami waveform in a tsunami source area by remote water-level measurements. Wave propagation is considered within the scope of a linear shallow-water theory.
V. V. Voronin   +2 more
doaj   +1 more source

Randomized Dynamic Mode Decomposition

open access: yes, 2019
This paper presents a randomized algorithm for computing the near-optimal low-rank dynamic mode decomposition (DMD). Randomized algorithms are emerging techniques to compute low-rank matrix approximations at a fraction of the cost of deterministic ...
Brunton, Steven L.   +3 more
core   +1 more source

Analysis of the Singular Values for Conductivity Reconstruction in Magneto-Acoustic Tomography With Magnetic Induction

open access: yesIEEE Access, 2020
Due to the acoustic source distribution and limited bandwidth ultrasound measurement, the dominant ultrasound signals always come from the boundary of the electrical conductivity in magneto-acoustic tomography with magnetic induction (MAT-MI).
Ren Ma   +5 more
doaj   +1 more source

Approximate convolution using partitioned truncated singular value decomposition filtering for binaural rendering [PDF]

open access: yesProceedings of Meetings on Acoustics, 2013
In conventional binaural rendering, a pair of head-related impulse responses (HRIR), measured from source direction to left and right ears, is convolved with a source signal to create the impression of a virtual 3D sound source when played on headphones.
Joshua Atkins, Adam Strauss, Chen Zhang
openaire   +1 more source

RF Tomography in Free Space: Experimental Validation of the Forward Model and an Inversion Algorithm Based on the Algebraic Reconstruction Technique

open access: yesInternational Journal of Antennas and Propagation, 2013
Radio-frequency tomography was originally proposed to image underground cavities. Its flexible forward model can be used in free-space by choosing an appropriate dyadic Green's function and can be translated in the microwave domain. Experimental data are
V. Picco   +4 more
doaj   +1 more source

Recursive POD expansion for the advection-diffusion-reaction equation [PDF]

open access: yes, 2018
This paper deals with the approximation of advection-diffusion-reaction equation solution by reduced order methods. We use the Recursive POD approximation for multivariate functions introduced in [M. AZAÏEZ, F. BEN BELGACEM, T. CHACÓN REBOLLO, Recursive
Azaïez, Majdi   +3 more
core  

Application of Iteratively Truncated Singular Value Decomposition to Computation of Teleseismic Receiver Functions

open access: yesPure and Applied Geophysics, 2021
Receiver function analysis is perhaps the most popular tool amongst seismologists for estimating the receiver-side crustal structure using three-component recordings of teleseismic P-wave coda. Several methods have been suggested for successful construction of receiver function time series, and almost all of them involve deconvolution, the inverse of ...
openaire   +2 more sources

Characterizing coherence with quantum observables

open access: yesPhysical Review Research, 2020
We introduce a procedure based on quantum expectation values of measurement observables to characterize quantum coherence. Our measure allows one to quantify coherence without having to perform tomography of the quantum state and can be directly ...
Suman Mandal   +5 more
doaj   +1 more source

Polynomial basis conversion made stable by truncated singular value decomposition

open access: yesApplied Mathematical Modelling, 1997
The aim of this paper is to provide a numerically stable method for the transformation between the power and the Bernstein basis resp. the Bernstein and the B-spline basis. Although this transformation process is defined by a system of linear equations, the direct use of this linear system is sometimes not recommended, since it may be ill conditioned ...
openaire   +1 more source

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