Results 11 to 20 of about 25,416,119 (357)

The impact of lending availability and conditions for SMEs on the global development of venture financing systems [PDF]

open access: yesSHS Web of Conferences, 2021
Research background: The current situation, which caused global economy recession, has shown that all participants of the venture capital market are not ready for such occasions.
Balashova Svetlana   +2 more
doaj   +1 more source

Ontology of Mathematical Modeling Based on Interval Data

open access: yesComplex, 2022
An ontological approach as a tool for managing the processes of constructing mathematical models based on interval data and further use of these models for solving applied problems is proposed in this article.
M. Dyvak   +4 more
semanticscholar   +1 more source

Solution to the Dirichlet Problem of the Wave Equation on a Star Graph

open access: yesMathematics, 2023
In this paper, the solution to the Dirichlet problem for the wave equation on the star graph is constructed. To begin, we solve the boundary value problem on the interval (on one edge of the graph).
Gaukhar Arepova   +2 more
doaj   +1 more source

Direct and inverse problems for nonlocal heat equation with boundary conditions of periodic type

open access: yesBoundary Value Problems, 2022
A mathematical model of the process of heat diffusion in a closed metal wire is considered. This wire is wrapped around a thin sheet of insulation material. We assume that the insulation is slightly permeable.
Makhmud Sadybekov   +2 more
doaj   +1 more source

Construction of a functional by a given second-order Ito stochastic equation

open access: yesOpen Mathematics, 2023
In this article, we consider the problem of extending Hamilton’s principle to the class of natural mechanical systems with random perturbing forces of white noise type.
Tleubergenov Marat   +2 more
doaj   +1 more source

Unveiling abundance-dependent metabolic phenotypes of microbial communities

open access: yesmSystems, 2023
Constraint-based modeling has risen as an alternative for characterizing metabolism of communities. Adaptations of flux balance analysis have been proposed to model metabolic interactions, which in most cases consider the maximization of biomass ...
Natalia E. Jiménez   +4 more
doaj   +1 more source

Mathematical modeling of the spread of the coronavirus disease 2019 (COVID-19) taking into account the undetected infections. The case of China

open access: yesCommunications in nonlinear science & numerical simulation, 2020
Highlights • Mathematical model for coronavirus disease that fits well the spread in China.• New θ-SEIHRD model taking into account undetected infections.• Validation of the model with the reported data on China.• Estimation of errors when identifying ...
B. Ivorra   +3 more
semanticscholar   +1 more source

On Green’s function of Cauchy–Dirichlet problem for hyperbolic equation in a quarter plane

open access: yesBoundary Value Problems, 2021
The definition of a Green’s function of a Cauchy–Dirichlet problem for the hyperbolic equation in a quarter plane is given. Its existence and uniqueness have been proven. Representation of the Green’s function is given.
Makhmud Sadybekov, Bauyrzhan Derbissaly
doaj   +1 more source

Prediction of the macroscopic behavior of multi-layered elastic composites [PDF]

open access: yesMATEC Web of Conferences, 2022
In this work, elastic fiber reinforced composite materials consisting of several layers are considered. Each layer is assumed to be a unidirectional fiber reinforced composite.
Bouchikhi Ahmed   +2 more
doaj   +1 more source

Multimodal Analysis of Unbalanced Dermatological Data for Skin Cancer Recognition

open access: yesIEEE Access, 2023
To date, skin cancer is the most commonly diagnosed form of cancer in humans and is one of the leading causes of death in cancer patients. AI technologies can match and exceed visual analysis methods in accuracy, but they carry the risk of a false ...
Pavel A. Lyakhov   +2 more
doaj   +1 more source

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