Actual problems of Mathematics, Physics and Mecanics
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Actual problems in modern technical sciences
CAPACITIVE SENSOR SYSTEM FOR MEASURING MOISTURE CONTENT IN TRANSFORMER OIL
The efficiency and long-term stability of electrical transformers are directly related to the quality of their oil. Transformer oil possesses insulating and cooling properties, and its contamination with moisture reduces dielectric strength and increases the risk of short circuits. Therefore,...
3 June 2025, 21:50
CHEMICAL ENRICHMENT OF TUNGSTEN CAKES OF WASTE STORAGE AREAS JSC UZBEKISTAN TECHNOLOGICAL METALS COMBINE
In the process of chemical processing, technologies for dissolving tungsten cake with the participation of nitric acid are being considered. This process is implemented from the point of view of introducing the most correct and environmentally friendly solutions, as well as waste-free production...
3 June 2025, 21:50
INVESTIGATION OF SPUTTERING ICE LAYERS FROM Au(111)
This article presents the results of a study of the sputtering of ice films (six layers) covering the surface of Au(111) when bombarded with Ar+ ions with initial energies E0 = 200 and 400 eV. The results show that at E0=200 eV, the argon ion remains in the film and thus transfers its energy,...
3 May 2025, 21:50
ELECTRICAL AND PHYSICAL PROPERTIES OF SOLID TUNGSTEN CARBIDE-COBALT ALLOYS
The effective technologies for restoring the operability of shaft and bushing type parts depending on the nature of the damage to the working surface are considered. The most appropriate and environmentally friendly solutions in this area are identified from the standpoint of the possibility of...
3 May 2025, 21:50
TEXT VECTORIZATION BASED ON THE QUANTUM BAG-OF-WORDS ALGORITHM
This article is devoted to the vectorization of textual data, in which the quantum bag-of-words algorithm is proposed. The quantum bag-of-words vectorization algorithm allows to represent the quantum states of each word through vectors. For the experiments, a set of consumer complaints was taken...
3 April 2025, 21:50
SYNTHESIS OF CARBON-GRAPHITE COMPOSITE MATERIALS AND INVESTIGATION OF THEIR PROPERTIES
This article explores the synthesis of carbon-graphite composite materials, emphasizing their potential applications in various industrial sectors. The study outlines the preparation methods, including the use of carbon precursors and binder materials, followed by a detailed examination of the...
3 April 2025, 21:50
PROCESSING TEXT DATA USING TEXT MINING METHODS
In this manuscript, the stages of processing unstructured text data and the process of extracting knowledge based on them is studied. It is shown that the analysis of textual data is carried out in five main stages consisting of text identification, preliminary processing, knowledge building,...
3 April 2025, 21:50
NUMERICAL AND MACHINE LEARNING IN THE UZBEK TEXT SUMMARIZATION
Text summarization is a natural language processing task aimed at generating a condensed version of a given text using a computer. The result, known as a summary, should capture the key points and essential information from the original content. Besides text, other data types such as images,...
3 April 2025, 21:50
URBANIZATION AND INFRASTRUCTURE DEVELOPMENT: A CATALYST FOR MODERN URBAN LIFE
This article explores the growing interdependence between urbanization and infrastructure development in the context of global and regional urban growth. As cities expand and populations migrate from rural to urban areas, the pressure on transportation systems, housing, sanitation, and energy...
3 April 2025, 21:50
THE ROLE OF NICKEL ATOM CLUSTERING IN MODIFYING THE ELECTROPHYSICAL BEHAVIOR OF POLYCRYSTALLINE SILICON
This article investigates the impact of nickel atom clustering, introduced via diffusion into polycrystalline silicon, on its electrophysical properties. The samples were mechanically and chemically treated, followed by nickel deposition and thermal diffusion at 1000 °C. Schottky diodes were...
3 April 2025, 21:50