Browsing Сериальные издания by Title

Now showing items 248-267 of 7861

    • Method of estimation of frequency variation relying on estimation of shift of spectral peaks 

      Kechik, D. A.; Aslamov, Y. P.; Davydov, I. G. (БНТУ, 2021)
      Problem of estimation of variated frequency of components of polyharmonic signals has been arose. Three-dimensional time-frequency representation of signals is usually used to resolve this problem. But simple and reliable method of instantaneous frequency tracking is needed. Frequency tracking method based on estimation of shifts of peaks of spectrogram has been proposed in this ...
      2021-04-21

    • Methodics and tools of cough sound processing on basic of neural net 

      Vishniakou, U. А.; Shaya, B. H. (БНТУ, 2023)
      The purpose of the article is to analyze the methods and means of processing cough sounds to detect lung diseases, as well as to describe the developed system for classifying and detecting cough sounds based on a deep neural network. Four types of machine learning and the use of convolutional neural network (CNN) are considered. Hypermarkets of CNN are given. Varieties of machine ...
      2023-07-19

    • Methodology for Determining the Effective Thickness of the Cemented Layer of Steel 

      Sergei, G. S.; Aleksandr, L. V.; Sergej, P. R. (БНТУ, 2023)
      Highly loaded transmission gears are cemented and hardened. An important parameter of the hardened cemented layer is its effective thickness hef . Metal banding and the unavoidable instrumental error in hardness measuring have a great influence on the reliability of hef determination. The purpose of this article was to develop a methodology to improve the reliability of determining ...
      2023-08-15

    • Methodology of Defining of the Radiation Therapy Components for Various Methods of Patients’ Treating Using Medical Linear Accelerators and Gamma-Therapeutic Devices 

      Titovich, E. V.; Piatkevich, M. N.; Makarava, N. I. (БНТУ, 2020)
      One of the main factors affecting the effectiveness of radiation therapy is the constancy of the patient’s position on the treatment table created by immobilization devices of various designs and held throughout the entire irradiation procedure, which guarantees the accuracy of the delivery of the prescribed dose distribution. The purpose of the work was to establish the numerical ...
      2020-12-18

    • Methods for Accuracy Increasing of Solid Brittle Materials Fracture Toughness Determining 

      Lapitskaya, V. A.; Kuznetsova, T. A.; Chizhik, S. A.; Warcholinski, B. (БНТУ, 2022)
      Method for determining of the fracture toughness of brittle materials by indentation is described. The critical stress intensity factor KIC quantifies the fracture toughness. Methods were developed and applied to improve the accuracy of KIC determination due to atomic force microscopy and nanoindentation. It is necessary to accurately determine parameters and dimensions of the ...
      2022-04-06

    • Micro-joule cavity-dumped wavelength-tunable semiconductor disk laser 

      Savitski, V. G.; Calvez, S.; Dawson, M. D. (БНТУ, 2010)
      We report on cavity-dumping of a semiconductor disk laser as a method to generate energetic wavelength-tunable nanosecond pulses with repetition rates ranging from 0.1 to 4MHz. Experimentally, emission of 24ns pulses with peak output power of 41W in a single beam output (and of 30ns with peak power of 57W in a combined beam output) with wavelength tuning from 1045–1080nm was ...
      2012-03-23

    • Mobile robot navigation path algorithm in 3D industrial internet of thing (IoT) environment based on 5G mobile communication 

      Ping, Pei; Petrenko, Yury N. (БНТУ, 2019)
      With the significant growth of the semiconductor industry, creating small devices with powerful processing ability and network capabilities are no longer a dream for engineers. Currently, Internet of Things (IoT) has become one of the hottest topics in both industry and academia of wireless communication field. The idea of the Internet of Things (IoT) is to connect every day ...
      2019-07-09

    • Model and structure of the network internet of things for monitoring milk quality 

      Vishniakou, U. А.; Al-Masri, A. H.; Al-Haji, S. K. (БНТУ, 2021)
      The quality of milk is evaluated by a number of control points, which include a number of indicators, such as fat content, protein, lactose, density, etc. It is proposed to use the Internet of things (IoT) technology to control the quality of milk from distributed dairy farms. A multi-agent model of IoT network and the structure of such an IoT network for monitoring the quality ...
      2021-04-21

    • Model predictive control for photovoltaic station maximum power point tracking system 

      Elzein, Imad A.; Петренко, Ю. Н. (БНТУ, 2015)
      Представлен альтернативный подход по обеспечению режима максимальной выходной мощности (МВМ) фотоэлектрической станции (ФЭС). Рассматриваемая система состоит из солнечных батарей с нелинейными нестационарными характеристиками, работающих в автономном режиме, импульсного преобразователя постоянного тока (ИППТ) повышающего типа и соответствующего фильтра на выходе. Для управления ...
      2016-02-03

    • Modeling of an Impact of Thin Insulating Film on the Electrode Surface on Discharge Ignition in Mercury Illuminating Lamps at Low Ambient Temperatures 

      Bondarenko, G. G.; Fisher, M. R.; Kristya, V. I.; Zukowski, P. (БНТУ, 2019)
      The mixture of argon and mercury vapor with temperature-dependent composition is used as the background gas in different types of gas discharge illuminating lamps. The aim of this work was to develop a model of the low-current discharge in an argon-mercury mixture at presence of a thin insulating film on the cathode and to investigate the influence of film on the discharge ignition ...
      2019-03-15

    • Modeling of Capillary Shrinkage and Cracking in Early-Age Concrete 

      Leonovich, S. N. (БНТУ, 2018)
      Scientific hypothesis on moistening shrinkage mechanism for cement stone and concrete has been assumed as a basis for the present paper. Physical ideas on a mechanism for cracks volume increment in a concrete model presented as two-level structure have been accepted as a theoretical basis for a calculation method of crack resistance during capillary shrinkage. These ideas are the ...
      2018-08-02

    • Modeling of precipitation kinetics of manganese and copper sulfides in interstitial free steels 

      Hong, M. H.; Choi, K. Y.; Marukovich, E. I.; Lebedinsky, Y. A.; Branovitsky, A. M. (БНТУ, 2009)
      Modeling of precipitation kinetics of manganese and copper sulfides in interstitial free steels / M. H. Hong [et al.] // Литье и металлургия. – 2009. – №4 (53). – С. 39 - 43.
      2015-05-25

    • Modeling the internet of things network for monitoring audio information on the Amazon platform 

      Vishniakou, U. А.; Shaya, B. H. (БНТУ, 2021)
      The subject of research is modeling the structure of the Internet of things (IoT) network for controlling audio information based on the IoT platform. The purpose of the article is to detail the process of modeling the audio information monitoring network based on the IoT platform. The authors proposed the structure of a multi-agent system (MAS) for monitoring audio information ...
      2021-08-19

    • Monte Carlo Simulation of Flash Memory Elements’ Electrophysical Parameters 

      Zhevnyak, O. G.; Borzdov, V. M.; Borzdov, A. V.; Petlitsky, A. N. (БНТУ, 2022)
      Operation of modern flash memory elements is based on electron transport processes in the channel of silicon MOSFETs with floating gate. The aim of this work was calculation of electron mobility and study of the influence of phonon and ionized impurity scattering mechanisms on the mobility, as well as calculation of parasitic tunneling current and channel current in the conductive ...
      2022-12-29

    • Morphology modification of carbon chrome molybdenum steel structure influenced by heat treatment 

      Lutsenko, V. А.; Anelkin, N. I.; Golubenko, Т. N.; Scherbakov, V. I.; Lutsenko, O. V. (БНТУ, 2011)
      The influence of temperature and time parameters of thermal treatment on structural change and properties of carbon chromium molybdenum steel has been studied. It has been shown that there are considerable areas with grainy morphology of cementite after high temperature tempering in the structure of steel. It assures reduction of steel microhardness by 25%, and there are no ...
      2014-07-02

    • Multi-Layers Composite Plasma Coatings Based on Oxide Ceramics and M-Croll 

      Panteleenko, F. I.; Okovity, V. A.; Devоino, O. G.; Astashinsky, V. M.; Switala, F. (БНТУ, 2022)
      The paper considers the influence of the parameters of the plasma spraying process on the technological characteristics of multilayer coatings based on nickel-chromium, nickel-chromium-aluminum-yttrium materials, oxide ceramics, intended for operation at high temperature and additional dynamic loads. The design of plasma coatings during their application (with subsequent high-energy ...
      2022-04-06

    • Multi-Parameter Methodology for Assessing Quality Indicators of Nanomodified Fiber-Reinforced Concrete for Construction Site 

      Leonovich, S. N.; Sadovskaya, E. A.; Koleda, A. A. (БНТУ, 2023)
      Nanomodified fiber-reinforced concrete is a building material for which the required characteristics of fracture toughness are a distinctive feature. Determination of the stress intensity factor of fiber-reinforced concrete makes it possible to correctly assess the resistance of the material during the formation and development of cracks. The proposed multi-parameter methodology ...
      2023-10-20

    • Multicomponent Solid Fuel Production Technology Using Waste Water 

      Pekhota, A. N.; Khroustalev, B. M.; Phap, Vu Minh; Romaniuk, V. N.; Pekhota, E. A.; Vostrova, R. N.; Nga, Nguyen Thuy (БНТУ, 2021)
      An assessment is given to the problems of urban wastewater sludge utilization in our country and abroad, with determination of formation and usage level. Global trends in the reduction of carbon dioxide emissions exacerbate the urgency of solving the designated tasks. At the same time, recently, in connection with the EU’s plans to introduce a cross-border carbon levy, it has ...
      2021-12-14

    • Nanoantenna Array for Terahertz Detection Application, Design and Scope 

      Pande, S. V.; Patil, D. P.; Gade, S. (БНТУ, 2024)
      The development and implementation of a nanoantenna array for terahertz detection hold immense potential in advancing scientific research and innovation, proven by its ability to enhance terahertz signal reception, overcome limitations of conventional detection methods, and unlock new possibilities for numerous industries. However, concerns related to scalability, cost-effectiveness, ...
      2024-04-12

    • Nanofiber Concrete: Multi-Level Reinforcement 

      Leonovich, S. N.; Sadovskaya, E. А. (БНТУ, 2022)
      Concrete is the most commonly used building material worldwide. One of its main disadvantages is the fragility of fracture and low crack resistance. The use of dispersed reinforcement of concrete composites is a promising direction in solving this type of problem. Dispersed fibers, evenly distributed over the entire volume of the material, create a spatial frame and contribute ...
      2022-11-11