Results 91 to 100 of about 910,199 (344)
Combining spectral CT acquisition methods for high-sensitivity material decomposition
Medical Imaging 2020: Physics of Medical Imaging, 2020 Quantitative estimation of contrast agent concentration is made possible by spectral CT and material decomposition. There are several approaches to modulate the sensitivity of the imaging system to obtain the different spectral channels required for decomposition. Spectral CT technologies that enable this varied sensitivity include source kV-switching,
Tivnan, Matthew +5 more
openaire +4 more sources
Advanced Engineering Materials, EarlyView.Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley +1 more source
The Eigenspace Spectral Regularization Method for Solving Discrete Ill-Posed Systems
Journal of Applied Mathematics, 2021 This paper shows that discrete linear equations with Hilbert matrix operator, circulant matrix operator, conference matrix operator, banded matrix operator, TST matrix operator, and sparse matrix operator are ill-posed in the sense of Hadamard.
Fredrick Asenso Wireko +3 more
doaj +1 more source
Regularization of Nonlinear Decomposition of Spectral X-ray Projection Images
, 2017 International audiencePurpose: Exploiting the X-ray measurements obtained in different energy bins, spectral computed tomography (CT) has the ability to recover the 3D description of a patient in a material basis.
Sixou, B +10 more
core +1 more source
Rehaussement du signal de parole voisé par filtrage adaptatif des modes intrinsèques empiriques [PDF]
, 2010 In this paper a new method for voiced speech enhancement combining the Empirical Mode Decomposition (EMD) and the Adaptive Center Weighted Average (ACWA) filter is introduced.
TURKI, Monia +2 more
core +1 more source
Journal of Great Lakes research, 2019 Timely identification of color-producing agents (CPAs) in Lake Erie is a challenging, but vital aspect of monitoring harmful algal blooms (HABs). In particular, HABs that include large amounts of cyanobacteria (CyanoHABs) can be toxic to humans, posing a
Dulcinea M. Avouris, J. Ortiz
semanticscholar +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Efficient spectral data reduction for accurate iodine quantification in multi-energy CT
Scientific ReportsThis study proposes a spectral data reduction method for multi-channel computed tomography (CT) that optimizes material decomposition accuracy while minimizing data complexity.
Olivia F. Sandvold +7 more
doaj +1 more source
Multiresolution-based image fusion with additive wavelet decomposition [PDF]
, 1999 The standard data fusion methods may not be satisfactory to merge a high-resolution panchromatic image and a low-resolution multispectral image because they can distort the spectral characteristics of the multispectral data.
Fors Aldrich, Octavi +8 more
core +1 more source
IEEE Access, 2019 The selection of variational mode decomposition (VMD) parameters usually adopts the empirical method, trial-and-error method, or single-objective optimization method. The above-mentioned method cannot achieve the global optimal effect. Therefore, a multi-
Zhijian Wang +9 more
semanticscholar +1 more source