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Information Technology and CybersecurityDevelopment of software for applied statistical analysis of random variables

Development of software for applied statistical analysis of random variables

Development of software for applied statistical analysis of random variables Oleksii Klymenko ORCID: https://orcid.org/0009-0009-5164-1688 Oles Honchar Dnipro National University Classical applied mathematical statistics is a branch of mathematical science that deals with the development and application of mathematical methods and models for the collection, analysis, interpretation and presentation of empirical data. It includes a wide range of methods used to study patterns in data, estimate distribution parameters, test hypotheses, and make predictions. Classical applied mathematical statistics is used in various …

Control Systems, Telecommunications and NavigationNumerical modeling of controlled motion of a quadcopter drone

Numerical modeling of controlled motion of a quadcopter drone

Numerical modeling of controlled motion of a quadcopter drone Liudmyla Hart ORCID: https://orcid.org/0000-0003-2617-7851 Oles Honchar Dnipro National University Volodymyr Ruzhevych ORCID: https://orcid.org/0009-0006-2127-4387 Oles Honchar Dnipro National University The paper focuses on the use of control theory tools to develop a mathematical model of the controlled movement of a quadcopter drone. The purpose of the work is to perform a numerical analysis of the proposed mathematical model of a quadcopter based on an integrated systems approach, which consists in the sequential …

Information Technology and CybersecurityPerformance testing of an exact algorithm for the Subset Sum Problem on different personal computers

Performance testing of an exact algorithm for the Subset Sum Problem on different personal computers

Performance testing of an exact algorithm for the Subset Sum Problem on different personal computers Mykhailo Lenskyi ORCID: https://orcid.org/0009-0001-1445-2142 Oles Honchar Dnipro National University Hanna Mykhalchuk ORCID: https://orcid.org/0000-0002-5476-6349 Oles Honchar Dnipro National University This paper investigates the performance of an exact algorithm for the NP-complete Subset Sum Problem on different personal computers. The Subset Sum Problem asks whether there exists a subset of a given set of integers that sums up to a specified target value. Finding exact solutions for …

Innovative Technologies in Mechanical EngineeringImprovement of the mechanical properties of gas turbine engine parts made of two-phase titanium alloys

Improvement of the mechanical properties of gas turbine engine parts made of two-phase titanium alloys

Improvement of the mechanical properties of gas turbine engine parts made of two-phase titanium alloys Oleksii Fedosov ORCID: https://orcid.org/0000-0002-6269-5288 Oles Honchar Dnipro National University The subject of this study is the features of weld seam formation in complex alloyed titanium alloys during electron beam welding in a vacuum and argon arc welding. The aim of this research is to ensure the required level of mechanical properties of welded joints for aviation and aerospace components made from complex alloyed two-phase titanium …

Innovative Technologies in Mechanical EngineeringMethod for determining the mechanical characteristics of living bodies

Method for determining the mechanical characteristics of living bodies

Method for determining the mechanical characteristics of living bodies Danylo Snobko ORCID: https://orcid.org/0009-0008-8414-8825 Oles Honchar Dnipro National University Halyna Sokol ORCID: https://orcid.org/0000-0002-6183-9155 Oles Honchar Dnipro National University This study is dedicated to improving the method for determining the mechanical characteristics of living organisms, especially those with complex internal structures. This presents certain difficulties for analysis. The goal is to develop a simple and effective approach to this task, which would allow the determination of the mechanical properties of living systems …

Control Systems, Telecommunications and NavigationMethodology for determining the pitch angle program for launching spacecraft into circular orbits

Methodology for determining the pitch angle program for launching spacecraft into circular orbits

Methodology for determining the pitch angle program for launching spacecraft into circular orbits Ruslan Keba ORCID: https://orcid.org/0009-0007-9490-1254 Oles Honchar Dnipro National University Anatolii Kulabukhov ORCID: https://orcid.org/0000-0003-1139-4829 Oles Honchar Dnipro National University Circular orbits are widely used by spacecraft (SC) to fulfill their intended purposes. In particular, circular orbits are used by all satellite communication systems, navigation satellites, and Earth remote sensing satellites, where the stability of the constellation over time is a crucial element. The stability of the constellation in …