Technical sciences and technologies

List of Papers (Total 1,350)

Architecture of a decentralized book metadata 114 cataloging system with json api and federated synchronization

This paper proposes an architecture of a decentralized book metadata cataloging system designed for metadata management and integration with external information services through a JSON API. The relevance of the study is determined by the limitations of centralized cataloging platforms, where metadata moderation and updates are often concentrated within a small group of...

Methods of 3D model optimization for real-time applications

The development of real-time computer graphics systems has increased the demand for optimized three-dimensional models suitable for interactive applications. Video games, virtual and augmented reality platforms, and real-time simulators require stable performance and high visual quality under hardware limitations. The complexity of 3D models, including polygon density, topology...

Risks of implementation of artificial intelligence: security, legal, and socio-economic aspects

The article examines and systematizes the risks associated with the development and integration of artificial intelligence into socio-economic and security processes in the context of digital transformation. The multidimensional impact of artificial intelligence technologies on the information environment, labor market, personal data protection, economic relations, and national...

Selection of the composition and topography of the modified surface layer of the tool for processing polymer composites

The increasing share of the use of polymer composite materials, in particular carbon fiber, in various industries, as well as the anisotropic nature of their properties, require the use of cutting tools with increased wear resistance, heat resistance, thermal conductivity and low friction coefficient to ensure proper quality of mechanical processing. PCM have a set of properties...

The influence of metals’ surface properties on their laser cutting

The use of laser technology is currently one of the most progressive areas in industry, which has undergone significant development in recent years. The use of laser radiation is an effective process for processing various materials. Laser technologies differ from traditional processing methods in the absence of contact phenomena in the processing zone and the possibility of...

Modeling of vibration transfer and evaluation of vibration resistance of tools during impact cutting

The paper presents the results of mathematical modeling of vibration displacements of the cutting tool and assessment of vibration resistance of the cutting process under shock impulse loads. The dynamic model of the elastic system “tool-tool holder- workpiece” is considered, taking into account the feedback between the instantaneous cutting depth and the components of the...

Application of methods of mathematical statistics in the implementation of the laser cutting process of cubic boron nitride

The latest methods and technologies, namely their effective implementation a priori becomes impossible without the use of superhard materials. This is especially critical for tool production in the machine-building industry. Therefore, the use of this group of materials requires the development of new and improvement of existing progressive methods for processing these materials...

Technological parameters and quality control while diffusion welding in a glow discharge

The main parameters of diffusion welding and the features of their control methods are described. It is shown that, under conditions of diffusion welding with heating of parts in a glow discharge plasma, traditional methods of monitoring the temperature state of the welding zone such as thermocouples and optical pyrometers become insufficiently effective due to interferences...

Concept of interaction between natural and artificial systems

The development of natural systems on the planet is characterized by the growth of human society's potential in line with its needs and the challenges facing the surrounding environment. At the same time, evolution through natural selection is random, and millions of mutations occur, of which only a few prove to be useful. As a result, the mechanism of evolution through natural...

Research of the influence of machining sequence on the accuracy of a hydraulic drive part using three-dimensional modeling

In modern manufacturing conditions, a key criterion for production quality is achieving the desired part within the shortest possible time and with minimal production costs. Therefore, the study of the influence of the sequence of technological operations and the selection of machining parameters is highly relevant and enables optimization of manufacturing processes. The...

Analysis of approaches to image quality enhancement

The relevance of the study is determined by the need to establish a unified comparative framework for evaluating methods of satellite image quality enhancement, since their accuracy directly affects the results of image interpretation, cartographic production, land cover monitoring, and cadastral analysis. Despite the availability of numerous approaches, there is still no...

Franciscan cadastre on Bukovina: history and relevance of use

Archival cadastral maps still have significant potential and are used for many purposes, including research into the social and economic circumstances of changes and reconstruction of land use. Land use is a kind of landscape indicator, as it reflects the close connection between humans and nature and at the same time has a strong and clearly defined temporal dimension. A better...

Functioning of the state land cadastre in Ukraine: adaptation to martial arts conditions and prospects

The State Land Cadastre (SLC) is a basic element of the land management system and property rights enforcement in Ukraine. Martial law, imposed as a result of a full-scale invasion, has significantly complicated the stable functioning of the cadastral system. To stabilize land relations, under martial law, legislative changes were introduced that ensured the restoration of the...

Modernization of electronic geodetic infrastructure for the needs of the cadaster of territorial communities: technological barriers and social imperatives

The article examines the implementation of a next-generation electronic geodetic network as a fundamental infrastructure for maintaining the cadastral systems of territorial communities in the context of decentralization and the digital transformation of spatial management. The study considers the technical, organizational, and social aspects of creating and operating these...

Accuracy of determining the north direction for different types of compasses

The paper presents the results of an experimental study on the accuracy of determining the north direction using various types of magnetic compasses that differed in design, mass, length of the magnetic needle, damping, and manufacturing quality. The main objective of the study was to quantitatively assess the influence of the instruments’ structural features and the user’s level...

Insertion of transition curves during road reconstruction

The reconstruction of existing highways often requires the insertion of transition curves on curved sections to reduce the negative impact of centrifugal acceleration. The introduction of a clothoid leads to the displacement of the circular curve toward its center, while the options that preserve the position of the center of the circular curve do not account for the occurrence...

Lean-geodesy as a modern concept of organizing geodetic production: theoretical framework and practical implementation aspects

The article substantiates the relevance and feasibility of applying the Lean philosophy to the organization of geodetic production and introduces Lean-Geodesy as an innovative management model aimed at increasing the efficiency, quality, and flexibility of geodetic workflows under conditions of digital transformation. It is emphasized that traditional approaches to geodetic work...

Improvement of geodesic methods in determining the geometric parameters of the Honchariv bridge over the Lopan river in Kharkiv

The article investigates a relevant scientific and practical problem related to ensuring the reliable and safe operation of bridge structures under increasing traffic loads and complex engineering and geological conditions typical of large urban areas in Ukraine. The study focuses on the Gonchariv Bridge located in the city of Kharkiv. Bridge ageing, intensive automobile and tram...

Prospects for using wood processing waste in the production of construction composites

The woodworking industry produces various types of waste, including sawdust (small particles from sawing), shavings (from milling and drilling), lump waste, and fine sanding dust. Using these materials as secondary resources for other industries is an effective way to reduce production costs. Because of this, researching how to apply wood waste in the construction sector is a...

Application of GIS for the analysis of the ecological state of the Southern Bug river within the Khmelnytskyi and Vinnytsia regions

The problem of river pollution has been relevant for many years. Still, over the last decade the consequences have become increasingly noticeable, so this scientific work aims to highlight this problem. The Southern Bug River is a vital water artery of Central Ukraine, providing water supply, hydropower, fishing and recreation. Despite its significant ecological value, the river...

Optimization of environmental parameters of land reclamation systems for the preservation of biodiversity in agricultural landscapes

The article substantiates a conceptual model for the ecological optimization of Ukraine’s reclamation complexes, aimed at harmonizing agricultural productivity with the conservation of agro-landscape biodiversity in the context of climate transformation, water scarcity, and post-war reconstruction. The research methodology is based on a systemic landscape-ecological approach...

QGIS as a spatial analysis tool in modern urban planning

Modern urban planning faces challenges of sustainable development and adaptation to change, which necessitates accurate spatial analysis using GIS technologies. The implementation of open-source software (Open Source GIS) is becoming particularly relevant. The high cost of commercial GIS software limits its integration into educational curricula, creating a problem of...

Research and optimization of the composition of restoration composites for shell limestone buildings

The paper presents the results of a comprehensive experimental and analytical study aimed at the development and optimization of plastering and restoration composites intended for the repair and conservation of buildings constructed from shell limestone. The relevance of the research is due to the pronounced porosity, multi-scale capillary structure, and moisture sensitivity of...

Results of engineering-geological investigations for the construction of a transport and logistics center on Kil’tseva street in Chernihiv

The article presents the results of comprehensive engineering-geological investigations carried out within the studied site using field, laboratory, and analytical methods. Based on drilling operations, sampling of undisturbed soil specimens, laboratory determination of physical and mechanical properties, and static cone penetration testing, the geological structure of the soil...

Use of remote sensing and GIS in expert monetary valuation of agricultural lands: a case study of Сhernihiv region

The article examines the possibilities of applying geographic information systems (GIS) and Earth remote sensing data in expert monetary valuation of agricultural land. The relevance of the study is determined by the introduction of the agricultural land market in Ukraine, which requires more substantiated and transparent approaches to land value assessment. The use of only...