Results 21 to 30 of about 26,109,916 (377)

Mathematical Analysis of Chemical Reaction Systems [PDF]

open access: yes, 2018
The use of mathematical methods for the analysis of chemical reaction systems has a very long history, and involves many types of models: deterministic versus stochastic, continuous versus discrete, and homogeneous versus spatially distributed.
Polly Y. Yu, G. Craciun
semanticscholar   +1 more source

Assessment of Students’ Achievements and Competencies in Mathematics Using CART and CART Ensembles and Bagging with Combined Model Improvement by MARS

open access: yesMathematics, 2020
The aim of this study is to evaluate students’ achievements in mathematics using three machine learning regression methods: classification and regression trees (CART), CART ensembles and bagging (CART-EB) and multivariate adaptive regression splines ...
Snezhana Gocheva-Ilieva   +2 more
doaj   +1 more source

On Local Unique Solvability for a Class of Nonlinear Identification Problems

open access: yesAxioms, 2023
Nonlinear identification problems for evolution differential equations, solved with respect to the highest-order Dzhrbashyan–Nersesyan fractional derivative, are studied.
Vladimir E. Fedorov   +2 more
doaj   +1 more source

The Mathematics of Compositional Analysis

open access: yesAustrian Journal of Statistics, 2016
The term compositional data analysis is historically associated to the approach based on the logratio transformations introduced in the eighties. Two main principles of this methodology are scale invariance and subcompositional coherence. New developments and concepts emerged in the last decade revealed the need to clarify the concepts of compositions,
Barceló i Vidal, Carles   +1 more
openaire   +6 more sources

On Strongly Continuous Resolving Families of Operators for Fractional Distributed Order Equations

open access: yesFractal and Fractional, 2021
The aim of this work is to find by the methods of the Laplace transform the conditions for the existence of a strongly continuous resolving family of operators for a linear homogeneous equation in a Banach space with the distributed Gerasimov–Caputo ...
Vladimir E. Fedorov, Nikolay V. Filin
doaj   +1 more source

MATHEMATICAL MODELS FOR COVID-19 PANDEMIC: A COMPARATIVE ANALYSIS [PDF]

open access: yesJournal of the Indian Institute of Science, 2020
COVID-19 pandemic represents an unprecedented global health crisis in the last 100 years. Its economic, social and health impact continues to grow and is likely to end up as one of the worst global disasters since the 1918 pandemic and the World Wars ...
A. Adiga   +5 more
semanticscholar   +1 more source

Understanding Slow Feature Analysis: A Mathematical Framework [PDF]

open access: yes, 2008
Slow feature analysis is an algorithm for unsupervised learning of invariant representations from data with temporal correlations. Here, we present a mathematical analysis of slow feature analysis for the case where the input-output functions are not ...
Sprekeler, Henning   +1 more
core   +1 more source

Cluster analysis and mathematical programming [PDF]

open access: yesMathematical Programming, 1997
Given a set of entities, Cluster Analysis aims at finding subsets, called clusters, which are homogeneous and/or well separated. As many types of clustering and criteria for homogeneity or separation are of interest, this is a vast field. A survey is given from a mathematical programming viewpoint.
Hansen, Pierre, Jaumard, Brigitte
openaire   +6 more sources

A comprehensive overview of genomic imprinting in breast and its deregulation in cancer

open access: yesNature Communications, 2018
In growth and development genomic imprinting is important in regulating gene expression. Here, the authors study loss of imprinting (LOI) in cancer, developing a mixture model to detect monoallelically expressed loci without genotyping data - applying ...
Tine Goovaerts   +6 more
doaj   +1 more source

Equivalent Electrical Circuits and Their Use Across Electrochemical Impedance Spectroscopy Application Domains

open access: yesIEEE Access, 2022
When studying electrochemical systems, EIS practitioners face the challenge of choosing a relevant equivalent electrical circuit to analyze their measurement data and interpreting the role of its components.
Maxime Van Haeverbeke   +2 more
doaj   +1 more source

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