Browsing Наукові праці by Title
Now showing items 34-53 of 384
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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 ... -
GENERALIZED SPACES OF S AND S′ TYPES
(2023)In paper the topological structure of generalized spaces of S type and the basic operations in such spaces was investigated. The question of quasi-analyticity (non-quasi-analyticity) of generalized spaces of S type was ... -
Generalized Spaces of Type S and Evolutionary Pseudodifferential Equations
(Journal of Mathematical Sciences, 2022)We study the main operations (argument shift, differentiation, etc.) in the generalized spaces of type S and some classes of analytic functions and pseudodifferential operators in spaces of this kind, as well as the ... -
Holtsmark Fluctuations of Nonstationary Gravitational Fields
(2021)We construct Holtsmark distributions of nonstationary fluctuations of the local interactions of moving objects for a system in which the action of gravitation influence is governed by a power law. We deduce a pseudodifferential ... -
HOW TO EMPOWER ONLINE TEACHING: 12 PRINCIPLES FOR HIGHER AND POSTGRADUATE EDUCATION
(Інститут цифровізації освіти НАПН України, 2022-10-26)The global pandemic COVID-19, which began in 2020, has brought about new challenges to Ukraine’s higher and postgraduate education institutions. Despite the previous experience of providing online education courses, one ... -
Hyperbolic Systems in Gelfand and Shilov Spaces
(Springer, 2020)For systems hyperbolic in Shilov’s sense whose coefficients are continuous functions of time, we study the properties of the Green function in S-type spaces. For systems of this kind in the indicated spaces, we prove that ... -
Integral manifolds and the reduction principle for neutral functional-differential equations
(Yuriy Fedkovych Chernivtsi National University, 2016-12-12)We prove the reduction principle for investigating the stability of zero solution of a nonlinear differential equation of neutral type in the critical case. The problem is reduced to the investigation of the zero solution ... -
Internal and Startup Controls of the Solutions of Boundary-Value Problem for Parabolic Equations with Degenerations
(Journal of Mathematical Sciences, 2023)For a second-order parabolic equation with degenerations, we construct the solution of the problem of optimal control for systems described by the first boundary-value problem with internal and startup controls. The ... -
Iнтегрованi завдання з математики та iнформатики – ефективний засiб навчання математики у старшiй школi
(2023)Матерiали мiжнародної наукової конференцiї, присвяченої 55-рiччю факультету математики та iнформатики, 28–30 вересня 2023 р. -
Iнтегровані уроки в закладах загальної середньої освіти
(Чернівецький національний університет ім. Ю.Федьковича, 2023)