https://repository.hneu.edu.ua/handle/123456789/30432 Mon, 06 Apr 2026 20:08:40 GMT 2026-04-06T20:08:40Z https://repository.hneu.edu.ua/handle/123456789/32443 Назва: Construction of canal surfaces based on a specified flat curvature line Автори: Frolov O. Короткий огляд (реферат): The research relevance is predefined by the widespread use of elements and structures that have the shape of canal surfaces in engineering practice and the possibilities of reproducing the surface through kinematics. The research aims to develop new means of modeling canal surfaces referred to as a grid of curvature lines by introducing elements with special properties into the structural model that simplify the solution of differential equations and reduce the amount of computation. To achieve the research methods, the synthetic geometric method, methods of linear algebra, the theory of differential equations and differential geometry, as well as methods of computer geometric modeling and visualization of three-dimensional objects were used. Studies on modeling and studying the properties of channel surfaces are analyzed. The research on the problem of the surfaces and lines of curvature is considered in more detail and the conditions under which it is possible to simplify the solution of the differential equation are identified. It was proved that the condition of contact between the canal surface and the plane along a given plane curve is sufficient for this curve to be one of the curvature lines of the family of orthogonal to the generating circles. This allowed to reduce the solution of the differential equation to two quadratures. The expressions of the corresponding integrals and an algorithm for modeling the canal surface with the possibility of referring to a grid of curvature lines were obtained. The expressions that define the desired surface include the parametric equations of a given plane line; a function that determines the radii of the spheres of the family depending on the parameter of this line. A specific example of modeling a surface based on a defined formula was also considered, and images of this surface with visualization of the coordinate grid were presented. The research’s practical values are defined by the possibility of using the developed modeling tools in the design and computer-aided design of the geometry of real products containing surfaces of a smooth transition of variable radius. Sat, 01 Jan 2022 00:00:00 GMT https://repository.hneu.edu.ua/handle/123456789/32443 2022-01-01T00:00:00Z https://repository.hneu.edu.ua/handle/123456789/32442 Назва: Analysis of European experience in improving public administration mechanisms Автори: Radzikhovskyi Ye. Короткий огляд (реферат): No country is capable of building a progressive society without resorting to systematic modification of the model of public management, as the states of the Baltic Sea region have proven by their own example. The relevance of the analysis of the public administration mechanisms of the Baltic countries is explained by the success of the modernized policy of the administration system in Estonia, Latvia and Lithuania, whose experience is a vivid illustration of successful reform and the desire for permanent socio-economic growth. The purpose of this scientific work is to study the multifaceted components of the functioning of the updated concept of public administration of the Baltic republics through the prism of European integration processes within the countries, in particular. The leading methods of research work were the methods of analysis and generalization, with the help of which the key means of improving the public sector of Lithuania, Estonia and Latvia were revealed in combination with the method of comparison, which made it possible to compare the public management models of the three Baltic states. This article reveals the importance of the implementation of innovative decisions by subjects of power in order to realize the civil liberties of the population and ensure the principles of public administration. It was established that the change in the principles of state leadership in the Baltic states was due to the preparation for joining the European Union. In particular, the idea of interaction between state institutions and the civilian population was introduced, the latest information technologies were involved, and an anti-corruption policy was implemented. It was determined that the reformation of the public sector depends on ensuring its smooth functioning. The practical value of the mentioned scientific work lies in the possibility of using its materials in the process of developing reform solutions for the reconstruction of the public administration system. Sat, 01 Jan 2022 00:00:00 GMT https://repository.hneu.edu.ua/handle/123456789/32442 2022-01-01T00:00:00Z https://repository.hneu.edu.ua/handle/123456789/32441 Назва: Methodology for developing an information site with Workflow support for publishing articles Автори: Ushakova I.; Hrabovsky Ye. Короткий огляд (реферат): The Workflow system is an effective solution to the task of optimizing information flow in the electronic publishing system, which can reduce the number of errors and optimize the process of publishing articles. The purpose of this article was to create a methodology for developing an information site for web publishing. To achieve the goal of the research, scientific methods of generalization, classification, deduction and analysis were used. A problem-solving tree has also been created. The ultimate goal of overcoming this problem is the development of an information site with Workflow support. The study outlines the general structure of sections and subdivisions of the information site. In the context of this article, a methodology was developed to support the process of publishing articles on an information site based on the use of a modern content management system. For this purpose, the key criteria for a basic decision-making model for choosing a content management system were proposed and a rating of free content management systems was given. As a result of the analysis of the proposed criteria, it was concluded that the Joomla tool environment should be used to support web publishing processes. The paper compares the components of the work flow organization on the information site. An algorithm for selecting a component for organizing the workflow has been created. In order to create a site with Workflow support for publishing articles, the stages of development were planned, a list of criteria, based on which the development should be carried out, was proposed and a structural diagram for creating such site was given. The limitations of the created methodology for the development of an information site, which may arise in the process of practical implementation and adoption of relevant management decisions, are considered. The practical result of the work is recommendations for web developers to create an information site with Workflow support for publishing articles. Sat, 01 Jan 2022 00:00:00 GMT https://repository.hneu.edu.ua/handle/123456789/32441 2022-01-01T00:00:00Z https://repository.hneu.edu.ua/handle/123456789/32440 Назва: Trends in the development of the national economy as a medium for the functioning of Ukrainian organizations Автори: Gruzina I.; Krasnonosova O.; Pererva I. Короткий огляд (реферат): The relevance of the research problem is determined by the need to identify perspectives of the functioning of Ukrainian organizations in the conditions of global changes in the world economy and the activation of European integration processes. The purpose of the article was to analyze the trends in the development of the national economy based on the study of the structure of the main indicators, the determination of the degree of their interaction and the assessment of mutual influence on the functioning of Ukrainian organizations. To achieve the goal, the following methods were used: morphological analysis; scientific induction and deduction; dialectical method; system analysis; grouping and comparative analysis; analysis and synthesis, structural-functional approach; content analysis; methods of logical analysis and generalization, descriptive statistics, formalization; graphical and tabular method. The main results of the study are as follows: the need to analyze the causes of the country’s economic development, in particular, the dynamics of the nominal and real GDP, its structure and the number and qualification characteristics of the population, which is a stimulating factor of economic development, is substantiated; the expediency of analyzing employment and unemployment indicators, the number of vacancies, the level of entrepreneurial initiative development to assess the economy’s ability to provide workers with jobs has been proven; the need to analyze the economic growth of the country in connection with the analysis of the standard of living of the population is indicated, because what reflects positive material changes is an indicator of the development of society; reduction of the population in Ukraine, due to the outflow of its most active part abroad, which negatively affects the quality of the labor and is an obstacle to the growth of production rates; the causes of the outlined trends were identified, such as: the 2014 crisis associated with military operations in the East of Ukraine, political instability, rapid inflation, devaluation of the national currency, and the consequences of the COVID-19 pandemic, which affected the activities of economic entities and individuals due to the growth of unemployment and social restrictions. The practical significance of the obtained results lies in the formation of recommendations for taking into account the development trends of the national economy in the process of identifying prospects and possible problems of the functioning of Ukrainian organizations in the conditions of the country’s integration into the European community. Formulated conclusions and recommendations will be useful for managers and business owners seeking to build a competent organization on the way to joining the European economic space. Sat, 01 Jan 2022 00:00:00 GMT https://repository.hneu.edu.ua/handle/123456789/32440 2022-01-01T00:00:00Z