Articles with "eigen" as a keyword



On the Eigen‐Mode Excitation of Linear Oscillators and the Earth's Polar Motion

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Published in 2020 at "Annalen der Physik"

DOI: 10.1002/andp.202000262

Abstract: By transforming a 1D second‐order linear oscillator into a 2D first‐order polar motion differential equation, it can be shown that the finite smoothness (i.e., the presence of jump in finite order derivatives) of the applied… read more here.

Keywords: polar motion; eigen; excitation; earth polar ... See more keywords

Complete CP-eigen bases of meson-baryon chiral lagrangian up to p5-order

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Published in 2024 at "Journal of High Energy Physics"

DOI: 10.1007/jhep09(2024)171

Abstract: Chiral perturbation theory describes the low energy dynamics of mesons and baryons in terms of the nonlinear Goldstone boson and fermion degrees of freedom. Through the Young tensor technique, we construct the on-shell operator bases… read more here.

Keywords: eigen; meson baryon; complete eigen; eigen bases ... See more keywords

Imaging of Plasmonic Eigen Modes in Gold Triangular Mesoplates by Near-Field Optical Microscopy

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Published in 2018 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.8b00678

Abstract: We investigated the spectral and spatial characteristics of plasmons induced in chemically synthesized triangular gold nano- and microplates by aperture-type scanning near-field optical microscopy. Near-field transmission images taken at plasmon resonance wavelengths showed two-dimensional oscillating… read more here.

Keywords: field optical; optical microscopy; microscopy; near field ... See more keywords

Eigen‐Swarm: Swarm's Thermospheric Mass Density Modeling via Eigen‐Decomposition

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Published in 2025 at "Space Weather"

DOI: 10.1029/2025sw004351

Abstract: Precise thermospheric mass density (TMD) prediction is essential for satellite orbital tracking, reentry calculations, and upper atmospheric processes under varying solar and magnetospheric conditions. In this paper, we construct an empirical model of TMD at… read more here.

Keywords: eigen; thermospheric mass; eigen decomposition; swarm ... See more keywords

Noninvasive low-cycle fatigue characterization at high depth with photoacoustic eigen-spectrum analysis

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Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-26140-x

Abstract: In this work, photoacoustic eigen-spectrum analysis was proposed for noninvasively characterizing the mechanical properties of materials. We theoretically predicted the relationship between the photoacoustic eigen-spectra of cylindrical optical absorbers and their mechanical properties. Experimental measurements… read more here.

Keywords: eigen spectrum; photoacoustic eigen; cycle fatigue; eigen ... See more keywords

Multiple eigenmodes of the Rayleigh-Taylor instability observed for a fluid interface with smoothly varying density.

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Published in 2018 at "Physical Review E"

DOI: 10.1103/physreve.97.013102

Abstract: In this article, multiple eigen-systems including linear growth rates and eigen-functions have been discovered for the Rayleigh-Taylor instability (RTI) by numerically solving the Sturm-Liouville eigen-value problem in the case of two-dimensional plane geometry. The system… read more here.

Keywords: eigen; taylor instability; multiple eigenmodes; rayleigh taylor ... See more keywords
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A GPU-Parallelized Eigen-Based Clutter Filter Framework for Ultrasound Color Flow Imaging

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Published in 2017 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"

DOI: 10.1109/tuffc.2016.2606598

Abstract: Eigen-filters with attenuation response adapted to clutter statistics in color flow imaging (CFI) have shown improved flow detection sensitivity in the presence of tissue motion. Nevertheless, its practical adoption in clinical use is not straightforward… read more here.

Keywords: based clutter; clutter; framework; time ... See more keywords

Receiver-Operating Characteristic Analysis of Eigen-Based Clutter Filters for Ultrasound Color Flow Imaging

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Published in 2018 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"

DOI: 10.1109/tuffc.2017.2784183

Abstract: The eigen-based filter has theoretically established itself as a potent solution in ultrasound color flow imaging (CFI) for combating against clutter arising from moving tissues. Yet, it remains poorly understood on how much gain in… read more here.

Keywords: clutter; tissue; eigen; filter ... See more keywords

Learning by Population Genetics and Matrix Riccati Equation

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Published in 2023 at "Entropy"

DOI: 10.3390/e25020348

Abstract: A model of learning as a generalization of the Eigen’s quasispecies model in population genetics is introduced. Eigen’s model is considered as a matrix Riccati equation. The error catastrophe in the Eigen’s model (when the… read more here.

Keywords: population genetics; matrix riccati; eigen; model ... See more keywords