Results 51 to 60 of about 5,402 (301)

Mapping the risk for transmission of urban schistosomiasis in the Brazilian Northeast

open access: yesGeospatial Health, 2020
This is an analysis of the risk of schistosomiasis transmission in the city of Recife in the Northeast of Brazil based on the number of schistosomiasis cases (Schistosoma mansoni) registered for the period 2007-2017 together with data resulting from ...
Emília Carolle Azevedo de Oliveira   +5 more
doaj   +1 more source

Barycentric Lagrange interpolation method for solving Love’s integral equations

open access: yesBoundary Value Problems, 2023
In this paper, we present a new simple method for solving two integral equations of Love’s type that have many applications, especially in electrostatic systems.
E. S. Shoukralla, B. M. Ahmed
doaj   +1 more source

Function kernels and divisible groupoids

open access: yesAIMS Mathematics, 2022
In this paper, we introduce the notion of a function kernel which was motivated from the kernel in group theory, and we apply this notion to several algebraic structures, e.g., groups, groupoids, BCK-algebras, semigroups, leftoids.
Hee Sik Kim   +2 more
doaj   +1 more source

Simplified, automated methods for assessing pixel intensities of fluorescently-tagged drugs in cells. [PDF]

open access: yesPLoS ONE, 2018
Assessing the cytoplasmic uptake of fluorescently-tagged drugs in heterogeneous cell types currently involves time-consuming manual segmentation of confocal microscopy images.
Allan Kachelmeier   +5 more
doaj   +1 more source

Topological algebras of kernels

open access: yesAequationes Mathematicae, 1984
Given a locally convex spaceE we define thelocally convex algebra of kernels\(E'_b \mathop {\hat \otimes }\limits_\tau E\), in such a way that the set of all its proper closed 2-sided ideals coincides with the set of all closed vector subspaces of ker(h), whereh is a continuous algebra morphism of\(E'_b \mathop {\hat \otimes }\limits_\tau E\) into ℒb(E)
openaire   +3 more sources

On GE-algebras

open access: yesBulletin of the Section of Logic, 2021
Hilbert algebras are important tools for certain investigations in intuitionistic logic and other non-classical logic and as a generalization of Hilbert algebra a new algebraic structure, called a GE-algebra (generalized exchange algebra), is introduced ...
Ravikumar Bandaru   +2 more
doaj   +1 more source

Sobolev algebras through heat kernel estimates [PDF]

open access: yesJournal de l’École polytechnique — Mathématiques, 2016
On a doubling metric measure space $(M,d, )$ endowed with a "carr du champ", let $\mathcal{L}$ be the associated Markov generator and $\dot L^{p}_ (M,\mathcal{L}, )$ the corresponding homogeneous Sobolev space of order $00}$ for the spaces $\dot L^{p}_ (M,\mathcal{L}, ) \cap L^\infty(M, )$ to be algebras for the pointwise product.
Bernicot, Frédéric   +2 more
openaire   +4 more sources

Group Classification of the Unsteady Axisymmetric Boundary Layer Equation

open access: yesMathematics
Unsteady equations of flat and axisymmetric boundary layers are considered. For the unsteady axisymmetric boundary layer equation, the problem of group classification is solved. It is shown that the kernel of symmetry operators can be extended by no more
Alexander V. Aksenov, Anatoly A. Kozyrev
doaj   +1 more source

Improvement of variables interpretability in kernel PCA

open access: yesBMC Bioinformatics, 2023
Background Kernel methods have been proven to be a powerful tool for the integration and analysis of high-throughput technologies generated data. Kernels offer a nonlinear version of any linear algorithm solely based on dot products.
Mitja Briscik   +2 more
doaj   +1 more source

An algebraic characterization of the optimum of regularized kernel methods [PDF]

open access: yesMachine Learning, 2009
The representer theorem for kernel methods states that the solution of the associated variational problem can be expressed as the linear combination of a finite number of kernel functions. However, for non-smooth loss functions, the analytic characterization of the coefficients poses nontrivial problems.
DINUZZO, FRANCESCO, DE NICOLAO, GIUSEPPE
openaire   +3 more sources

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