Browsing Наукові праці by Title
Now showing items 25-44 of 384
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Characterization of compact subspaces of the space of separately continuous functions with the cross-uniform topology
(Чернівецький національний університет імені Юрія Федьковича, 2023)Наведена характеристика компактних підпросторів простору нарізно- неперервних функцій з крос-рівномірною топологією -
Classical Solutions of the Equation of Local Fluctuations of Riesz Gravitational Fields and their Properties
(2022)We consider a pseudodifferential equation involving the Riesz operator of fractional differentiation, which is a natural generalization of the well-known equation of fractal diffusion. The fundamental solution of the Cauchy ... -
Compactness and completeness in partial metric spaces
(Topology and its Applications, 2020-02-01)We analyze compactness-like properties of sets in partial metric spaces and obtain the equivalence of several forms of the compactness for partial metric spaces. Moreover, we give a negative answer to a question from [8] ... -
Comparison of data clustering algorithms// Sworld Jornal Issue No23, Part 1 January 2024 – P. 116-127
(Sworld Jornal Issue, 2024-01)У статті проведено порівняння алгоритмів кластеризації даних: K-Means, Hierarchical Agglomerative Clustering (HAC), Density-Based Spatial Clustering of Applications with Noise (DBSCAN), Expectation–Maximization clustering ... -
COMPARISON OF MACHINE LEARNING ALGORITHMS FOR PREDICTING MORTALITY FROM COVID-19 VIRUS
(SWorldJournal, 2022)The article compares the effectiveness of Machine Learning Algorithms on the example of Covid-19 distribution data. The following Machine Learning algorithms are considered: Logistic Regression, Support Vector ... -
Components of ICT competence of teachers of mathematics and informatics
(Information Technologies and Learning Tools, 2019)Nowadays, the competency-based approach is becoming more and more traditional in Ukrainian education for every level – from preschool to postgraduate. Its focus is on two main concepts, “competency” and “competence”, ... -
Construction of stability domains for linear differential equations with delay
(SWorldJournal, 2023-05-31)The aim of the present article is to investigate of solutions stability of linear autonomous differential equations with retarded argument. It is obtained the necessary and sufficient conditions, for all the roots of the ... -
CONSTRUCTION OF STABILITY DOMAINS FOR LINEAR DIFFERENTIAL EQUATIONS WITH SEVERAL DELAYS
(Yuriy Fedkovych Chernivtsi National University, 2022-11-21)The aim of the present article is to investigate of solutions stability of linear autonomous differential equations with retarded argument. The investigation of stability can be reduced to the root location problem for the ... -
Construction of stability domains for linear differential-difference equations
(National Academy of Sciences of Ukraine, 2012-07)We investigate the boundedness conditions and the methods of construction of a stability domain of linear differential equations with several delays. -
Doroshenko I.V. ., Knihnitska T.V. Application of statistical analysis for medical data // International scientific conference «The current stage of development of scientific and technological progress 2024». – SW-GER Conference Proceedings, Fabruary 2024 – P. 15-20
(2024-02)В статтірозглянутовикористання різноманітних статистичних підходів і методів машинного навчання в медицині. Проведено модельний аналіз на прикладі пацієнтів, де визначено фактори, що впливають на ... -
Doroshenko, I., Knihnitska, T., & Kreshtanovych, M. (2024). COMPARISON OF DATA CLUSTERING ALGORITHMS // науково-практична міжнародна конференція «Modern systems of science and education in the USA, EU and other countries '2024». - Sworld-Us Conference Proceedings, 1(usc22-01), P. 32–38
(Sworld-Us Conference Proceedings, 2024-01)У статтіпроведено порівнянняалгоритмів кластеризації даних: K-Means, Hierarchical Agglomerative Clustering (HAC), Density-Based Spatial Clustering of Applications with Noise (DBSCAN), Expectation–Maximization ... -
Doroshenko, I., Knopov, O. & Vovk, L. Mathematical Models of Extreme Modes in Ecological Systems. Cybern Syst Anal 58, 764–779 (2022)
(Springer US, 2022-12-02)The authors consider the basic stages of creating a computer system for decisionmaking support in ecological security. The key factors of environmental pollution caused by ecological and technological catastrophes and ... -
Equi-Baire 1 families of functions
(Elsevier, 2021) -
Evolution pseudodifferential equations with analytic symbols in spaces of s type
(Carpathian Mathematical Publications, 2021)A nonlocal multipoint by time problem for an evolution equation with a pseudodifferential operator is studied. This operator is treated as an infinite order differentiation operator in generalized spaces of S type. We ... -
Evolutionary Pseudodifferential Equations in the Spaces of Generalized Periodic Functions
(Springer, 2021)We prove the correct solvability of the nonlocal multipoint (in time) problem for the evolutionary equation with pseudodifferential operator in the space of generalized periodic functions and an initial function, which is ... -
EVOLUTIONARY PSEUDODIFFERENTIAL EQUATIONS WITH SMOOTH SYMBOLS IN S-TYPE SPACES
(2023-11)We study an evolutionary equation with an operator (i∂/∂x), where φ is a smooth function satisfying certain conditions. As special cases of this equation, we get a partial differential equation of parabolic type with ... -
EXISTENCE AND STABILITY OF CYCLES IN PARABOLIC SYSTEMS WITH SMALL DIFFUSION
(Yuriy Fedkovych Chernivtsi National University, 2023-09-29)The aim of the present paper is to investigate of some properties of periodic solutions of a nonlinear autonomous parabolic systems with a periodic condition. We investigate parabolic systems of differential equations using ... -
Existence and stability of traveling waves in parabolic systems of differential equations with weak diffusion
(Precarpathian National University (Ivano-Frankivsk, Ukraine), 2022-12-30)The aim of the present paper is to investigate of some properties of periodic solutions of a nonlinear autonomous parabolic systems with a periodic condition. We investigate parabolic systems of differential equations using ... -
EXISTENCE AND STABILITY OF TRAVELING WAVES IN PARABOLIC SYSTEMS OF DIFFERENTIAL EQUATIONS WITH WEAK DIFFUSION
(Precarpathian National University (Ivano-Frankivsk, Ukraine), 2022-05-12)We prove the existence of periodic solutions in autonomous parabolic system of differential equations with weak diffusion on the circle. We study the existence and stability of an arbitrarily large finite number of cycles ... -
General Boundary-Value Problem for Nonuniformly Parabolic Equations with Power Singularities
(Journal of Mathematical Sciences, 2024)We investigate a general boundary-value problem for nonuniformly 2b -parabolic equations with degeneration. The coefficients of parabolic equations and boundary conditions admit power singularities of any order in any ...