Results 51 to 60 of about 47,396,763 (332)

Spectral methods for matrices and tensors [PDF]

open access: yesProceedings of the forty-second ACM symposium on Theory of computing, 2010
While Spectral Methods have long been used for Principal Component Analysis, this survey focusses on work over the last 15 years with three salient features: (i) Spectral methods are useful not only for numerical problems, but also discrete optimization problems (Constraint Optimization Problems - CSP's) like the max.
openaire   +4 more sources

A Novel Method for Fatigue Damage Assessment in Bimodal Processes Considering High- and Low-Frequency Reduction Effects

open access: yesJournal of Marine Science and Engineering, 2023
Due to inherent nonlinearities within floating systems and the second-order wave forces affecting them, the dynamic responses of floating systems manifest as bimodal Gaussian processes.
Yuanzhi Guo   +3 more
doaj   +1 more source

Improving subband spectral estimation using modified AR model [PDF]

open access: yes, 2007
It has already been shown that spectral estimation can be improved when applied to subband outputs of an adapted filterbank rather than to the original fullband signal.
Bonacci, David, Mailhes, Corinne
core   +1 more source

Analysis of Faceted Gratings Using C-Method and Polynomial Expansion

open access: yesPhotonics
The coordinate-transformation-based differential method developed by Chandezon et al. is recognized as one of the simplest and most versatile approaches for modeling surface-relief gratings.
Gérard Granet, Kofi Edee
doaj   +1 more source

Thermal and multi-boiling analysis of a rectangular porous fin: A spectral approach

open access: yesNonlinear Engineering, 2022
Fins are commonly utilized to enhance (dissipate) heat in various engineering systems that include heat exchangers. In the present investigation, the impact of multi-boiling and thermo-geometric factors on a convective–radiative rectangular porous fin ...
Kasali Kazeem Babawale   +4 more
doaj   +1 more source

Spectral method for solving the time fractional Boussinesq equation

open access: yesApplied Mathematics Letters, 2018
In this paper, Fourier spectral approximation for the time fractional Boussinesq equation with periodic boundary condition is considered. The space is discretized by the Fourier spectral method and the Crank–Nicolson scheme is used to discretize the ...
Hui Zhang   +3 more
semanticscholar   +1 more source

Efficient Methods for the Chebyshev-Type Prolate Spheroidal Wave Functions and Corresponding Eigenvalues

open access: yesMathematics
This study explores efficient methods for computing eigenvalues and function values associated with Chebyshev-type prolate spheroidal wave functions (CPSWFs). Applying the expansion of the factor eicxy and the inherent properties of Chebyshev polynomials,
Yan Tian, Guidong Liu
doaj   +1 more source

Low‐Level Tragus Stimulation Modulates Atrial Alternans and Fibrillation Burden in Patients With Paroxysmal Atrial Fibrillation

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background Low‐level tragus stimulation (LLTS) has been shown to significantly reduce atrial fibrillation (AF) burden in patients with paroxysmal AF. P‐wave alternans (PWA) is believed to be generated by the same substrate responsible for AF.
Kanchan Kulkarni   +5 more
doaj   +1 more source

Spectral Volume Method: application to Euler equations and performance appraisal [PDF]

open access: yes, 2010
The compact high-order "Spectral Volume Method" designed for conservation laws on unstructured grids is presented. Its spectral reconstruction is exposed briefly and its applications to the Euler equations are presented through several test cases to ...
Chikhaoui, Oussama   +2 more
core  

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk   +10 more
wiley   +1 more source

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