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Перегляд Кафедра комп`ютерних наук та інженерії програмного забезпечення за назвою

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A Generalized Mode-Matching Technique in the Theory of Waveguide Mode Diffraction. Part 4: Convergence Rate of the Projection Approximations”

Petrusenko, I. V.; Sirenko, Yu. K. (Begell House, 2017-05-23)

This part of the study continues presenting fundamentals of the generalized mode-matching technique designed for analyzing the waveguide mode scattering. Specifically, the problem is considered of analytically estimating ...
A study of approximation of functions of bounded variation by Faber-Schauder partial sums

Mormul, N.; Shchitov, A. (PC TECHNOLOGY CENTER, 2023-04-10)

Система функцій Фабера-Шаудера була введена в 1910 році і стала першим прикладом базису в просторі функцій, неперервних на [0, 1]. Відомо низку результатів щодо властивостей рядів Фабера-Шаудера, у тому числі щодо оцінювання ...
Abrupt Discontinuities: The Reflection Operator is a Contraction

Petrusenko, I.V.; Sirenko, Yu.K. (Begell House, 2017-05-23)

New basic properties of the reflection operator are analyzed for the problem of wave diffraction by abrupt discontinuities. A generalized (operator) form of the power conservation statement has been used to evaluate the ...
Analysing features of e-commerce systems architecture

Yakovenko, Vadim; Ulianovska, Yuliia; Yakovenko, Tetiana (РС ТЕСHNOLOGY СЕNTЕR, 2023-05-31)

The object of the research is the process of designing the architecture of high-load systems. The conducted research is based on the system approach to design the architecture of e-commerce systems, characterized by high ...
Analytic-Numerical Analysis of Waveguide Bend

Petrusenko, I. V. (Gebze Institute of Technology, 2017-05-23)

A novel rigorous solution of the problem of mode diffraction by the junction between a straight and a uniformly curved rectangular waveguide is presented. The generalized scattering matrix of the unit is obtained via the ...
Computer simulation of safety processes of composite structures rheological properties

Savchenko, Iurii; Shapoval, Oleksandr; Chupilko, Tatiana; Ulianovska, Yuliia; Titov, Viacheslav; Shchepetov, Vitalii (Kremenchuk Mykhailo Ostrohradskyi National University, Ukraine, 2023-04-10)

Mechanical means directly related to the information support path (locators, ob-servation stations, tracking, detection, localization, etc.) require special attention within the technical channels for obtaining information. ...
Domain Product Technique Solution for Scattering by Cylindrical Obstacle in Rectangular Waveguide

Chumachenko, V. P.; Petrusenko, I. V.; Чумаченко, В. П.; Петрусенко, І. В. (a Gebze Institute of Technology Gebze, Turkey, 2017-05-23)

The canonical problem of scattering by a cylindrical obstacle in a rectangular waveguide is rigorously reexamined in the framework of the domain product technique. An accurate, rapidly converging algorithm is based on ...
Fresnel formulae for scattering operators

Petrusenko, I.V.; Sirenko, Yu.K. (Begell House, 2017-05-23)

For the scalar problem of mode diffraction onthe abrupt waveguide discontinuity the Fresnel formulae for the reflection and transmission matrix operators are derived using the mode‐marching technique. This generalized form ...
Game theory and financial components for determining the budget places optimal distribution in the higher education system of Ukraine

Bocharov, Dmytro; Stebliuk, Nataliia; Ulianovska, Yuliia; Volosova, Nataliia; Hryhorash, Olha; Petrenko, Iryna (FINTECHALLIANCE LLC, 2023-05-31)

The complexity and interdependence of management and decision-making problems in the system of higher education require new ideas and approaches, which necessitates the search for new management solutions using modern ...
Generalization of the Power Conservation Law for Scalar Mode-Diffraction Problems

Petrusenko, I.V.; Sirenko, Yu.K. (Begell House, 2017-05-23)

A complete form of the generalized power conservation law for the problem of mode diffraction in the lossless multi-port H - ( E -) plane waveguide transformer has been obtained. The generalization has been accomplished ...
Generalized Mode-Matching Technique in the Theory of Guided Wave Diffraction. Part 1: Fresnel Formulas for Scattering Operators

Petrusenko, I. V.; Sirenko, Yu. K. (Begell House, 2017-05-23)

A generalization of the conventional mode‐matching technique corresponding to a new formulation of the problem of wave diffraction by waveguide discontinuities is рresented. The matrix‐operator formalism used in the study ...
Generalized Mode-Matching Technique in the Theory of Guided Wave Diffraction. Part 2: Convergence of Projection Approximations”

Petrusenko, I. V.; Sirenko, Yu. K. (Begell House, 2017-05-23)

A rigorous justification of applicability of the truncation procedure to solution of infinite matrix equation of the mode‐matching technique still remains an open question throughout the years of its intensive use. The ...
Generalized Mode-Matching Technique in the Theory of Guided Wave Diffraction. Part 3: Wave Scattering by Resonant Discontinuities”

Petrusenko, I. V.; Sirenko, Yu. K. (Begell House, 2017-05-23)

The problem of justification of the correctness of the matrix‐operator models of the modematching technique as applied to the problems of resonant wave scattering by waveguide discontinuities has remained of great importance ...
On L1-Matrices with Degenerate Spectrum and Weak Convergence in Associated Weighted Sobolev Spaces

Rudyanova, T. N.; Kogut, P. I. (Дніпропетровський національний університет імені Олеся Гончара, 2017-04-22)

We study the compactness property of the weak convergence in variable Sobolev spaces of the following sequences, where the squared symmetric matrices belong to the Lebesgue space and their eigenvalues may vanish on ...
Projection approximations to the matrix scattering operators and relative convergence phenomenon

Petrusenko, I.V.; Sirenko, Yu.K. (Begell House, 2017-05-23)

A matrix‐operator model of the mode‐matching technique is examined for a scalar problem of mode diffraction on abrupt discontinuity in the waveguide. The convergence of approximations,which are found via a truncation ...
Python for data processing and modeling indicators of economic security of the country

Chupilko, T. A.; Ulianovska, Yu. V.; Mormul, M. F.; Shchitov, O. M. (Online Scientific Publishers OWN, 2023-04-10)

The article considers aspects of efficient data processing. There are defined the stages of working with data and the features specific to each stage. There are considered packages NumPy, Pandas, Matplotlib, SciPy, Statsmodels ...
Python для обробки даних і моделювання фінансово-економічних показників

Чупілко, Т. А.; Ульяновська, Ю. В.; Мормуль, М. Ф.; Лагода, А. Е. (Вінницький національний технічний університет, 2023-04-06)

У статті розглянуто аспекти ефективної обробки даних. Значна увага приділяється проблемам, що виникають при моде-люванні і прогнозуванні даних та роль досліджень для прийняття рішень. Визначаються етапи роботи з даними та ...
Quantitative and qualitative analysis of business risks

Mormul, M. F.; Shchitov, O. M.; Romanchuk, L. A.; Shchitov, D. M. (Online Scientific Publishers OWN, 2023-04-10)

The current national and global economic situation is highly unstable with a high degree of uncertainty due to the martial law and hostilities in Ukraine. This situation can seriously threaten the security of the country, ...
Scattering by inductive post in uniformly curved rectangular waveguide

Petrusenko, I. V.; Chumachenko, V.P. (Гебзе технологічний інститут, 2017-05-23)

The rigorous solution to the problem of wave scattering by a single inductive post in a continuously curved rectangular waveguide is presented. The position of the post and its radius are arbitrary. The waveguide curvature ...
The development of Ukraine’s export potential of sphere of knowledge-intensive services in the context of global economic integration

Schitov, D. N.; Mormul', N. F.; Мормуль, Н. Ф.; Щитов, Д. Н. (Sheffield: Science and Education Ltd, UK, 2017-05-23)

There was considered the methodological bases of research of sphere of knowledge-intensive services in the context of global economic integration. There was investigated the status and trends of knowledge-intensive services ...

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Перегляд Кафедра комп`ютерних наук та інженерії програмного забезпечення за назвою

Перегляд Кафедра комп`ютерних наук та інженерії програмного забезпечення за назвою

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