bluuebunny/crossref_metadata_2025_split huggingface dataset:
Calculation of the stability of the equilibrium form of discrete systems
Authors: Shkurupiy Oleksandr , Mytrofanov Pavlo , Dovzhenko Oksana , Pohribnyi Volodymyr 
Published: July 2024

On the basis of the displacement method, together with the methods of iterations and half-division, an algorithm for stability calculation of the first kind equilibrium form of compressed reinforced concrete columns with hinged fixing at the ends, considering the stiffness changing was developed. The use of the above methods makes it possible to determine the minimum critical load or stress at the first bifurcation and their stability loss corresponding form. The use of matrix forms contributes to simplification of high order stability loss equation. This approach allows to obtain the form of stability loss that corresponds to the critical load.Â Â
Experimental Investigation and Computer-Generated Simulation of Reinforced Double-Tee Girders with a Wall of Oriented Standard Board
Authors: Dmytrenko Andrii , Dmytrenko Tetiana , Derkach Tetyana , Klochko Lina 
Published: July 2024

The problem of sustaining capacity increasing of wooden structures and elements which operate in lateral deflection is always in the researchersâ€™ focus of interest, this caused the composite wooden structures creation. One of the ways to improve and increase wooden structuresâ€™ technical-and-economical efficiency is bar reinforcement, which allows to increase structuresâ€™ resistibility and rigidness, safety and lasting quality.The results of experimental investigation of reinforced wooden I-beam with a web of oriented standard wall operation are given in this research paper. The peculiarity of this I-beam is boom fiber-glass reinforcement. The experiment task is to determine the operation characteristics and stress strain behavior of composite beam elements.In the article, the authors provided a description of the proposed and patented design constructive solution of reinforced double-tee girders with a wall of oriented standard board, which was made of two boards with 38 x 65 mm cross-section and 10 mm x 200 mm wall of oriented standard board (oriented standard board - OSB), which connected with epoxy adhesive, the height of beam is 250 mm.The experiment results analysis of suggested I-beams with fiber-glass reinforcement was carried out, the operation under the load peculiarities and fracture mode was revealed.Â Â
Experimental Studies of Energy-Efficient Beams in Buildings and Structures of the Oil and Gas Complex
Authors: Chichulina Kseniia , Chichulin Viktor , . . 
Published: July 2024

This study presents the results of experimental tests of new structural solutions for beams with double profiled trapezoidal wall and uneven pitch of corrugations. Tests of such structures have been performed for the first time. This determined the goals and objectives of the experiment. The probabilistic characteristics (mathematical expectation, mean square deviation) of the strength of the profiled wall material and the limit parameters of the bearing capacity of beams elements with profiled walls have been determined. This further allows us to calculate the failure probability of structures belonging to this type in the form of a system of elements. Experimental tests in the nodes of beams with profiled walls gave the opportunity to assess the nature of the work in such structures, to build the dependence of deformation from loads in dangerous cross sections of the samples and graphs of the deflections to determine the characteristic space structures and the patterns of transition to the ultimate state. Experimental studies have shown the effectiveness of the profiled wall inclusion in the beam bending and confirmed the feasibility of its use for buildings and structures of the oil and gas complex. It was experimentally revealed that the plane stress state of the profiled wall is characterized by small values of normal stresses at the level of the middle axis with a tendency of increasing in the direction of connection with the shelves. The novelty of the research is in the experimental analysis of features of the new beam assemblies with a double profiled wall and confirmed the possibility of using corrugated thin-walled profiles in the beam walls. The prospect and advantages as for the application of the developed designs in industrial facilities of the oil and gas complex have been proved. Peculiarities of carrying out experiments of thin-walled designs are revealed.Â Â
Experimental and Theoretical Testing Results of Reinforced Concrete Columns under Biaxial Bending
Authors: Pavlikov Andriy , Harkava Olha , Prykhodko Yulia , Baryliak Bohdan 
Published: July 2024

The experimental tests data of reinforced concrete columns of a rectangular profile made of heavy concrete on biaxial bending with axial force are presented. The inclination angle of the external load plane to the vertical axis of inertia of the section varied in the range from 14Âº to 66Âº. The tests were conducted to study the work of the biaxial bended elements under load and to verify the developed method for strength analysis of such elements. It has been confirmed that the ultimate compressed fibrous strains of concrete depend not on the shape of the section, but on the shape of the concrete compressed area. The general method of strength analysis of biaxial bended reinforced concrete columns is developed. The problem of difficulty applying nonlinear deformation model in the study of biaxial deformed elements is successfully solved by the introduction of the stress-strain relations for concrete and reinforcement and extremal strength criterion. The results of the tests have good correspondence with theoretical calculations, which proves the expediency of using the developed method for the strength analysis.Â Â Â
Seismic Protection of Buildings in Areas Adjacent to Open-Pit Mining
Authors: Palyvoda Oleksandr , Skachkov Andriy , Zhukov Serhiy , Yermolenko Dmytro 
Published: July 2024

Purpose of the present research is the analysis of the seismic loadings on buildings in areas adjacent to open-pit mining, depending on the patterns of the spatial concentration of explosive energy in the rock massif, which have a complicated structure and its acoustic anisotropy; the justification for the general approach to technological solutions for the protection of buildings and structures and determination of the limits for parameters of mass explosions in open-pits due to the parameters of their seismic influence on these objects. The main factors of anthropogenic seismic regime of mining towns under conditions of application of exploding geo-technologies are analysed. The analysis of the change of the stress state of rock massifs with respect to their structure and lithological composition; the concept of the simulation model for the propagation of seismic waves in anisotropic medium and the formation of waveguides and shielding fractures in it; statistical analysis of surveying observations and mathematical treatment of their results are considered. As a result of the carried out researches, methods of calculating seismic safe restrictions for the parameters of blasting operations in the open pit and the protection of the built-up areas by shielding fractures have been developed.Â Â
The Work of Stone Pillars Damaged During Operation
Authors: Klymenko Ievgenii , Grynyova Iryna , Pents Volodymyr 
Published: July 2024

During the experimental and statistical research the experiment was planned for the three most important factors influencing the residual load-bearing capacity of damaged stone columns rectangular cross section, namely, the depth of damage, the angle of the front damage on one of the main sections of soy and eccentricity. Numerical modeling of work of the eccentrically compressed rectangular cross section damaged during the operation of stone pillars was carried out in the LIRA-SAPR software package in a non-linear environment. The results of experimental statistical modeling made it possible to determine the influence on the throughput of each of the selected factors, as well as the mutual influence of the factors. Based on the obtained values of the destructive force for 15 column marks, in accordance with the experimental design, a three-factor experimental-statistical model of the second order was constructed. This model is adequate to the experimental error of 0.45, with 7 statistically significant factors. The analysis of the above method of calculating the damaged stone pillar in PC LIRA allows us to conclude that this method completely takes into account the actual work of the material. The difference between the calculation results and the experimental research of stone structures is within 5%.Â Â
Ethno Cultural Specifics Brand Marketing and Social Development and Promotion Aspects
Authors: Dobryanska Viktoria , Shynkarenko Raisa , Muller Maryna , Kodak. Olga 
Published: July 2024

â€œBrandâ€ concept modern interpretation, trade mark image characteristics, the brands role in implementing company marketing impact on consumers is considered. The article deals with confectionery products brand development and promotion based on folk traditions, examples using Sorotchinsky Fair and Opishnya toyÂ images in figured chocolate confectionery and gift sets. Based on the study it can be concluded that allusions usage, grounded on deep psychological stereotypes, collective subconscious archetype, make the brand recognizable, understandable, desirable.
Development of Integration Processes in Agro-Industrial Sphere
Authors: Berezina Liudmyla , Diadyk Tetyana , Zahrebelna Iryna , Maksymenko Oleh 
Published: July 2024

Integration processes in the agro-industrial sector are an important factor in increasing the efficiency of its functioning by obtaining a synergistic effect in various economic areas, in particular, economic, organizational, managerial, and social.As a result of solving the main tasks of the article due to its purpose, the main factors that influence the integration processes in the agro-industrial sphere are revealed; the basic criteria of their systematization are determined; the main tendencies of the integration processes of agro-industrial formations are studied and EBITDA is calculated, through which the impact of capital on efficiency is estimated; the main stages of integration processes management are singled out and the conceptual model of integration processes development of agro-industrial formations is proposed.Â Â
Effective Taxation Modeling Based on International Experience
Authors: Zhovnir Nataly , Shevchenko Olena , Halai Vasyl , Kyslytsia Svitlana 
Published: July 2024

Foreign experience in taxation has been generalized in the article based on the analysis of Ukrainian fiscal system. Modern approaches in direct and indirect profit and consumption taxation have been determined. Effective taxation methodology based on the taxation burden management modeling has been proposed.Â Â Â
Information Technological System for Maxillofacial Area Bones Prototyping
Authors: Sorokovyi Oleksandr , Golovko Gennady , Dmytrenko Tatyana , Derkach Tatyana 
Published: July 2024

The research is devoted to the sequential movement of digital information between different software products, eliminating at each stage the problems of conversion, recognition, fine-tune the parameters of operations, that is, the development of a kind of technological map of the process of obtaining a material model of a part of a human skeleton for use in maxillofacial surgery. An information technology system for obtaining 3D models of the lower jaw bones with the use of tomography and free CAD/CAM InVesalius 3 and Autodesk software is developed. InVesalius 3 software was used to provide semi-automatic image segmentation using the Hounsfield scale and build a specific three-dimensional voxel model, based on the virtual layered individual images combination. Voxel models convert to STL file and editing surface Â«artifactsÂ» (inaccuracies) with Autodesk, MeshMixer. Â Completed prototyping bone and implant models obtained on a FDM 3D printer are used in maxillofacial surgery.Â Â Â
Interaction of the Mortar Flow with of a Mortar Pumpâ€™s Valve Ball
Authors: Kaczynski Roman , Korobko Bogdan , Vasyliev Ievgen , Kivshyk Anton 
Published: July 2024

The article deals with the process of interaction of the valve ball of a mortar pump with the mortar flow. The schemes of the working chamber with attached forces to its elements are drawn up. The hydrodynamic pressure is determined in the analytical form and as the results of the experiment. The structural parameters of the working chamber and the rheological parameters of the mortar are analyzed, which have the greatest influence on the magnitude of the hydrodynamic force.Â Â
High-Mobility Concrete Mixes for Concrete-Filled Steel Tube Structures of Complex Cross-Section
Authors: Sopov Viktor , Dolgiy Viktor , Latorets Kateryna , Zhuravlov Yurii 
Published: July 2024

Currently, in the technology of concrete and reinforced concrete, a period of revolutionary leap is observed, caused mainly by the use of high-strength and composite materials, complex high-performance chemical and mineral admixtures, disperse reinforcement, etc. In conditions of increased requirements for economy, lower consumption of metal, cement and forest materials, Interest in the builders causes concrete-filled steel tubes.The main requirements for concrete-filled steel tubes and concrete mixtures for its manufacture are considered. The specific features of the selection of the composition of concrete-filled steel tubes are shown. The technique of selection of compositions and results of researches of properties of concrete mixes and concrete-filled steel tubes is presented.Â Â
Increase in Fluid Extraction in the Field at the Final Stage of Development
Authors: Rubel Victoriia , Petruniak Maryna , Mykhailovska Olena 
Published: July 2024

It has been established that the fluid reserves, which are at the final stage of development, are difficult to extracta and water. The methods of intensification are analyzed and it is established that it will be rational in this case to pump carbon dioxide into the reservoir. Its influence on a bundle of oil and water is determined. The results of the statistical processing of the change of the debit before and after injection of carbon dioxide, the influence of the volume of gas injected into the well from the seperate permeability of the reservoir, as well as the expected rate of wellbore after injection, are presented.Â Â
Reliability of Water Supply Networks
Authors: I. Guzynin Alexander , A. Guzynin Alexander , . . 
Published: July 2024

The reliability of ring water supply networks is investigated. Oriented graphs of annular water supply networks are considered. The structural reliability of such networks is determined. For these purposes, it is suggested to use the method of minimal paths and minimal sections in an oriented graph. This makes it possible to obtain an upper and lower reliability limit for water networks of arbitrary configuration with different diameters and lengths of sections. Using minimal paths and minimal cross-sections, equations are obtained for the reliability of annular water supply networks. For any water supply network, functions can be recorded that determine its actual reliability.Â Â Â
Neural Network Technology of the Financial and Economic Model Synthesis of Production as the Fragment of the Economy Digitalization
Authors: Alyoshin Sergei , Borodina Elena , Hafiiak Alla , Nosach Oleksandr 
Published: July 2024

The purpose of the article is to develop a technology for desgning neural network models for automatic monitoring of the tax burden to achieve the optimal balance between the possibility of developing a successful business and sufficient filling of the regional budget. A multi-layer perceptron and a back-propagation algorithm were applied for the research as well as a neural control technology. The automation of the process of determining the elements of the gradient vector was produced in implementing traditional method of the back-propagation of error by using neural control technology. For the first time, a solution to optimize the fiscally-tax burden (FTB) of the region has proposed with the application of the back-propagation algorithm. Using the proposed methodology a software tool will be created for the transition to an automatic system for optimal management of the economy.Â Â Â
Modeling the Electronic Structure and Composition Tungsten Adsorbed Metal Complexes of on the Electrode Surface under Conditions of High-Temperature Electrochemical Synthesis
Authors: Solyanik Liudmyla , Kuznetsova Tetiana , Solovyova Nataliia , Usenko Dmytro 
Published: July 2024

The interest to the physics of nano-dimensional structures, the most urgent and most dynamically developing field of modern solid state physics, is connected both with completely new fundamental scientific problems and physical phenomena, and with the prospects of creating entirely new quantum devices and systems with wide functional opportunities for nano-electronics, measuring equipment, new-generation information technologies, communication equipment, etc.Â Â Â
Optimizing Forms and Size of Windows for Energy Conservation
Authors: Sergeychuk Oleg , Martynov Viacheslav , Virchenko Gennadii , Usenko Iryna 
Published: July 2024

The article deals with the problem of optimizing the form and size of the windows. This is important because of significant losses of heat through windows. The article demonstrates how to improve methods accepted as standard in Ukraine for calculating the natural illumination and insolation of houses.Â Â Â
The Identification of Alternatives and Changes in Scenarios for the Development of Regional Build Clusters
Authors: Chupryna Yurij , Ryzhakov Dmytro , Malykhina Oksana , Pokolenko Vadym 
Published: July 2024

The article deals with the creation of a general scheme for managing the structure of an integrated association under the influence of a complex of external and internal factors. This is the basis for identifying development scenarios or alternatives to the development of associations such as the construction cluster. Also, the article presents a method for detecting construction cluster development scenarios by comparing different building cluster management systems. The described models can be the basis for conducting expert appraisal and calculating the quality indicators of the management of associations on the basis of public-private partnership.Â Â
Distance Education Possibilities Analysis for Integrated Innovative Projects
Authors: Bukhkalo Svitlana , Byalskiy Yuri , Aheicheva Oleksandra , Derkunska Zhanna 
Published: July 2024

The materials presented the possibilities development of solar and wind power plants, project development for all those who are engaged in the power studies and baseness. In this, phase of work in NTU "KPI" â€“ studies the possibility of increasing the economic efficiency of alternative energy sources. A review of the literature and the necessary articles written on the subject: Ð°s technologies and economies develop and become more complex, energy needs increase greatly; types and methods of alternative energy, as well as the possibility of calculating the basic set of main economic indicators are classified; identified possible areas of work in obtaining the necessary information and results. Energy is a fundamental input for economic systems. Current economic activity depends overwhelmingly on fossil fuels including oil, coal, and natural gas. These fuels are non-renewable. Renewable sources such as hydroelectric, wind, and solar power currently provide less than 10% of global energy. In just a few decide solar and wind power has developed from alternative energy sources to a new fast growing industrial branch. The history of industrial civilization is a history of energy transitions. In less developed, agrarian economies, people's basic need for food calories is provided through simple forms of agriculture, which is essentially a method of capturing solar energy for human use. As economies develop and become more complex, energy needs increase greatly.Â Â
HR-Benchmarking as an Innovative Tool of Personnel Management in Ukraine
Authors: Kazak Ðžlena , Shevchenko Ðžlena , . . 
Published: July 2024

The essence of benchmarking and its kind as HR-benchmarking is revealed.Â First of all, the emphasis is on HR-benchmarkingÂ as the process of identifying and adapting existing examples of HR services effective functioning to improve their performance in a particular company, and also methods and motivational tools for effective impact on staff.Â The basic approaches to the classification of HR-metrics, which analyze HR-services, are determined.Â The reasons that hinder the effective implementation of HR-benchmarking in enterprises of Ukraine are being analyzed, which is connected, first of all, to the peculiarities of doing business, differences in thinking, motivation, views on human resources, in relation to the work of the employees themselves.Â The expediency of using HR-benchmarking in the implementation of innovative digital technologies at domestic enterprises it is discussed, which form the digital management of career development, work rotation and continuous training of employees, improving the HR services.Â Â Â
Mixes for Concrete Residues Removal from Sidewalk Tiles Production Molds Invention and Analysis
Authors: Onyshchenko Volodymyr , Storozhenko Dmytro , Senenko Nataliia , Bunyakina Nataliia 
Published: July 2024

One of the technological operations of production of sidewalk tiles, which increases cost, is removal of of hardened cement-concrete mixture residues. This mixture solidifies on any surfaces. It is easy to remove the fresh residue of the solution, but the solidified mixture is removed badly and is dangerous for both the equipment and for the template forms. In addition, the form with the remnants of hardened concrete cannot be used in the future. The task of removing concrete remnants is complicated by the fact that the concrete is of mineral nature. This means that you can remove it only with acid. Concentrated acid gives the desired effect. It penetrates into the deep layers of the dried cement mortar and destroys it. Any tool to remove concrete contains concentrated acid, which destroys the structure of concrete; Â inhibitors that protect the surface from the action of acids other auxiliary Ingredients.The means for dissolving cement mortar from the surface of the mold for production of paving slabs were created and offered. A series of experimental studies on the detection of their dissolution efficiency of hardened cement mortar were performed. A comparative analysis of the created solutions is conducted with those market analogues used in the production and have a satisfactory washing ability, but it is extremely expensive, which significantly increases the cost of the tile fulfilled. It is proved that the washing ability of new solutions meets the requirements and does not destroy the surface of the form. Methods of means preparing is simple and norequires the use of precursors. Significantly lower cost is the main advantage of created means.Â
Synthesis of the Algorithm of Adaptive Compensation of Nonlinear Distortions for Informational Systems
Authors: Shefer Oleksandr , Shulha Oleksandr , Ichanska Nataliia , Kozelkova Caterina 
Published: July 2024

An adaptive method of compensation of non-linear distortions was created in informational systems on the basis of usage the synthesized non-linear adaptive compensators for the expansion of a linear dynamic diapason of radio receiving devices that differs from the well-known ones, because it doesnâ€™t lead to reduction of reliability of telecommunication systems both in apparatus and in functional meaning that allowed to increase the quality of their functioning. The usage of non-linear adaptive compensators allows getting the necessary meanings of parameters and the methods of connection of devices that are set to depress the non-linear distortions in those mentioned systems that will allow increasing the reliability of functioning of informational systems in 12% in general.Â Â Â