Results 31 to 40 of about 1,379,599 (244)

Hyperspectral Image Super-Resolution Algorithm Based on Graph Regular Tensor Ring Decomposition

open access: yesRemote Sensing, 2023
This paper introduces a novel hyperspectral image super-resolution algorithm based on graph-regularized tensor ring decomposition aimed at resolving the challenges of hyperspectral image super-resolution.
Shasha Sun   +5 more
doaj   +1 more source

Vertical Resolution Enhancement by Applying Polarimetric Spectral Analysis Techniques to Multibaseline InSAR Data [PDF]

open access: yes, 2012
Polarimetric spectral analysis techniques have been recently introduced for processing multibaseline interferometric synthetic aperture radar data that are affected by the speckle phenomenon.
Kostas Papathanassiou   +3 more
core   +1 more source

Spectral decomposition unlocks ascidian morphogenesis

open access: yeseLife
Describing morphogenesis generally consists in aggregating the multiple high-resolution spatiotemporal processes involved into reproducible low-dimensional morphological processes consistent across individuals of the same species or group.
Joel Dokmegang   +4 more
doaj   +1 more source

Detector-based spectral CT with a novel dual-layer technology: principles and applications

open access: yesInsights into Imaging, 2017
Detector-based spectral computed tomography is a novel dual-energy CT technology that employs two layers of detectors to simultaneously collect low- and high-energy data in all patients using standard CT protocols.
Negin Rassouli   +3 more
doaj   +1 more source

Revealing the Individual Effects of Firing Temperature and Chemical Composition on Raman Parameters of Celadon Glaze

open access: yesCeramics, 2023
The Raman polymerization index (or IP value) is often used as a positive indicator of the firing temperature of the glazes of ancient ceramics. Previous studies have also reported that the IP value was negatively correlated with the chemical composition ...
Lan Zhao, Yunjun Zhang
doaj   +1 more source

Lagrangian and spectral analysis of the forced flow past a circular cylinder using pulsed tangential jets [PDF]

open access: yes, 2012
We numerically investigate the influence of pulsed tangential jets on the flow past a circular cylinder. To this end a spectral-Lagrangian dual approach is completed on the basis of time-series data.
Jardin, Thierry, Bury, Yannick
core   +1 more source

Gas detection with the influence of a coal layer using a variational mode decomposition–Based highlight volumes extraction method in a tight sandstone reservoir

open access: yesFrontiers in Earth Science, 2022
The low-frequency strong reflection of coal seams always makes the gas detection of the adjacent gas reservoir difficult in a tight sandstone reservoir.
Xing-Jian Wang, Ya-Juan Xue
doaj   +1 more source

Spectral decomposition and Gelfand’s theorem [PDF]

open access: yesSemigroup Forum, 2009
In this paper we are interested in spectral decomposition of an unbounded operator with discrete spectrum. We show that if $A$ generates a polynomially bounded $n$-times integrated group whose spectrum set $σ(A)=\{iλ_k; k\in\mathbb{Z}^* \}$ is discrete and satisfies $\sum \frac{1}{|λ_k|^\ellδ_k^n}
Driouich, A., El-Mennaoui, O., Jazar, M.
openaire   +2 more sources

Spectral Quadratic Variation Regularized Autoweighted Tensor Ring Decomposition for Hyperspectral Image Reconstruction

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The structure information of hyperspectral image (HSI) is well-characterized by tensors, surpassing the capabilities of traditional compressive sensing reconstruction models based on vectors and matrices.
Xinwei Wan   +4 more
doaj   +1 more source

Complex Networks Models and Spectral Decomposition in the Analysis of Swimming Athletes’ Performance at Olympic Games

open access: yesFrontiers in Physiology, 2019
This study aims to present complex network models which analyze professional swimmers of 50-m freestyle Olympic competitions, comparing characteristics and variables that are considered performance determinants. This comparative research includes Olympic
Vanessa Helena Pereira-Ferrero   +3 more
doaj   +1 more source

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