Results 41 to 50 of about 559,986 (194)

Jumping with variably scaled discontinuous kernels (VSDKs) [PDF]

open access: yesBIT Numerical Mathematics, 2019
AbstractIn this paper we address the problem of approximating functions with discontinuities via kernel-based methods. The main result is the construction of discontinuous kernel-based basis functions. The linear spaces spanned by these discontinuous kernels lead to a very flexible tool which sensibly or completely reduces the well-known Gibbs ...
De Marchi, S.   +2 more
openaire   +4 more sources

AN INTEGRATED NETWORK-CONSTRAINED SPATIAL ANALYSIS FOR CAR ACCIDENTS: A CASE STUDY OF TEHRAN CITY, IRAN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Research on determination of spatial patterns in urban car accidents plays an important role in improving urban traffic safety. While traditional methods of spatial clustering of car accidents mostly rely on the two dimensional assumption, many spatial ...
S. A. EslamiNezhad, M. R. Delavar
doaj   +1 more source

Monitoring a Reverse Osmosis Process with Kernel Principal Component Analysis: A Preliminary Approach

open access: yesApplied Sciences, 2021
The water purification process is becoming increasingly important to ensure the continuity and quality of subsequent production processes, and it is particularly relevant in pharmaceutical contexts.
Elena Quatrini   +4 more
doaj   +1 more source

Nyström-Clenshaw-Curtis quadrature for integral equations with discontinuous kernels [PDF]

open access: yesMathematics of Computation, 2002
A new highly accurate numerical approximation scheme based on a Gauss type Clenshaw-Curtis quadrature for Fredholm integral equations of the second kind \[ x (
Sheon-Young Kang   +2 more
openaire   +1 more source

Adaptive Image Mismatch Removal With Vector Field Interpolation Based on Improved Regularization and Gaussian Kernel Function

open access: yesIEEE Access, 2018
When the regularized kernel methods are utilized in the mismatch removal problem, the regularization coefficient and the choice of kernel function will seriously affect the performance of the methods.
Yongjun Zhang   +4 more
doaj   +1 more source

The Effect of Fractional Order of Time Phase Delay via a Mixed Integral Equation in (2 + 1) Dimensions with an Extended Discontinuous Kernel

open access: yesSymmetry
It is common knowledge that studying integral equations accompanied by and related to phase delay is significant, and that significance grows when considering the problem’s time factor. Through this study, one may predict the material’s state for a short
S. Raad, M. A. Abdou
semanticscholar   +1 more source

COMPUTATIONAL EFFICIENCY OF A MODIFIED SCATTERING KERNEL FOR FULL-COUPLED PHOTON-ELECTRON TRANSPORT PARALLEL COMPUTING WITH UNSTRUCTURED TETRAHEDRAL MESHES

open access: yesNuclear Engineering and Technology, 2014
Scattering source calculations using conventional spherical harmonic expansion may require lots of computation time to treat full-coupled three-dimensional photon-electron transport in a highly anisotropic scattering medium where their scattering cross ...
JONG WOON KIM   +2 more
doaj   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

open access: yesAdvanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari   +4 more
wiley   +1 more source

Mapped Polynomials and Discontinuous Kernels for Runge and Gibbs Phenomena

open access: yes, 2022
In this paper, we present recent solutions to the problem of approximating functions by polynomials for reducing in a substantial manner two well-known phenomena: Runge and Gibbs. The main idea is to avoid resampling the function or data and relies on the mapped polynomials or “fake” nodes approach.
openaire   +2 more sources

Iterative reproducing kernel method for nonlinear oscillator with discontinuity

open access: yesApplied Mathematics Letters, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boying Wu, Xiuying Li
openaire   +1 more source

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