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Information Technology and CybersecurityStudy of autocorrelated samples of random variables

Study of autocorrelated samples of random variables

Study of autocorrelated samples of random variables Oleksii Fedorenko ORCID: https://orcid.org/0009-0008-6385-3584 Oles Honchar Dnipro National University Mathematical statistics is a branch of mathematics that deals with the collection, analysis, interpretation and presentation of data. It provides theoretical foundations and methods for conducting statistical studies that are used in various fields of science and technology. The role of mathematical statistics in the modern world is enormous. It allows researchers to draw conclusions from data, build predictive models, and make informed decisions …

Project Management and LeadershipCriteria for the Efficiency of Enterprise Personnel Management: Wartime Realities

Criteria for the Efficiency of Enterprise Personnel Management: Wartime Realities

Criteria for the Efficiency of Enterprise Personnel Management: Wartime Realities Hanna Niameshchuk ORCID: https://orcid.org/0000-0003-3199-8988 Oles Honchar Dnipro National University Yaroslav Cherkasov ORCID: https://orcid.org/0009-0009-0957-731X Oles Honchar Dnipro National University The report presented in the text focuses on a comprehensive analysis and consideration of personnel management problems in organizations. The authors argue for the need for a systematic approach to solving these problems and provide specific strategies for solving them. Starting with an analysis of the recruitment and selection process, the article …

Information Technology and CybersecurityCartographic component in e-commerce

Cartographic component in e-commerce

Cartographic component in e-commerce Anna Selivanova ORCID: https://orcid.org/0000-0001-6559-1508 State University of Trade and Economics Hanna Samoilenko ORCID: https://orcid.org/0000-0002-9374-2833 State University of Trade and Economics In the modern business environment, where competition is constantly increasing, effective business process management becomes critically important for achieving success. To meet market demands and respond to changes quickly and efficiently, enterprises need advanced tools for analyzing, visualizing, and optimizing their business processes. The research materials explore the significance and benefits of using cartographic components in …

Innovative Technologies in Mechanical EngineeringInformation-Mathematical Representation of Steel Grades of Structural Elements in Applied Mechanics

Information-Mathematical Representation of Steel Grades of Structural Elements in Applied Mechanics

Information-Mathematical Representation of Steel Grades of Structural Elements in Applied Mechanics Oleh Yushkevych ORCID: https://orcid.org/0000-0002-7199-8424 Oles Honchar Dnipro National University Valerii Ihnatkin ORCID: https://orcid.org/0000-0002-3332-1105 Interregional Academy of Personnel Management: Mykhailo Hrushevskyi Prykarpathian Institute There is a need to develop universal classification features by which it is possible to combine steels into groups and then find very similar properties in them. The aim of the work was to develop an indicator of the capacity of technical information of steel grades. Theoretical …

Innovative Technologies in Mechanical EngineeringDevelopment of a physical and mathematical model of gas flows in a triple coaxial nozzle

Development of a physical and mathematical model of gas flows in a triple coaxial nozzle

Development of a physical and mathematical model of gas flows in a triple coaxial nozzle Olena Karpovych ORCID: https://orcid.org/0000-0002-0677-5822 Oles Honchar Dnipro National University Yevhen Karakash ORCID: https://orcid.org/0000-0003-3833-2396 Ukrainian State University of Science and Technologies Denys Zhumar ORCID: https://orcid.org/0009-0006-0381-7114 Oles Honchar Dnipro National University Oleksandr Taran ORCID: https://orcid.org/0009-0009-3744-9155 Oles Honchar Dnipro National University The method of coaxial laser processing of powder materials is highly productive and takes place in a protective atmosphere. The shielding gas flows form the shape and …

Engines, Energy and ThermotechnicsThe problem of combustion instability in liquid rocket engines

The problem of combustion instability in liquid rocket engines

The problem of combustion instability in liquid rocket engines Samir Vekilov ORCID: https://orcid.org/0000-0001-5736-6300 Oles Honchar Dnipro National University Volodymyr Lipovskyi ORCID: https://orcid.org/0000-0002-7939-7973 Oles Honchar Dnipro National University Roman Pustovyi ORCID: https://orcid.org/0009-0002-6066-9788 Dnipro Aerospace LLC, Ukraine The purpose of this work is to carry out an overview on combustion instability in liquid propellant rocket engines, its classification, the main principles of occurrence as well as ways to prevent the phenomena while designing of the prospective engine. A new approach is based …