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Journal articles on the topic 'Mathematical dependence'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Moiseienko, Lidiia, and Liubov Shehda. "Dependence of Mathematical Errors on Mathematical Thinking Style." Collection of Research Papers "Problems of Modern Psychology", no. 54 (December 3, 2021): 116–36. http://dx.doi.org/10.32626/2227-6246.2021-54.116-136.

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2

Csizmás, Edit, and Edith Kovács. "The effect of the dependence structure on risk measures." Gradus 8, no. 3 (2021): 157–71. http://dx.doi.org/10.47833/2021.3.csc.004.

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After the financial crisis of 2008, the goodness of mathematical models became strongly questionable. One of the main targets of the attacks was the application of the Gaussian copula. The risk measures proposed were the Value at Risk (VaR) and Conditional Value at Risk (CVaR). We show how the values of these risk measures are influenced by different kinds of dependency structures, which are modelled by different copulas. Archimedean copulas are used for modelling tail dependences and asymmetrical dependencies. We present their impact on the portfolio’s probability distribution. We explain why

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3

Kamyshentsev, Gennadiy. "DEVELOPMENT OF A MATHEMATICAL MODEL OF REGISTRATION OF INDIRECT SIGNS OF EMERGENCY SITUATIONS OF TECHNOGENIC CHARACTER AT CRITICAL INFRINGED OBJECTS." Information and Public Safety, no. 2021-2 (May 15, 2021): 18–24. http://dx.doi.org/10.53029/2786-4529-2021-2-3.

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In the work on the basis of the analysis of vulnerability of objects of critical infrastructure, the mathematical model of registration of indirect signs of emergence of an emergency situation of technogenic character on objects of critical infrastructure is developed. The main parameters of the functional environment of mathematical model formation are analyzed and the basic equations of interrelation between variable and invariant parameters are determined. A description of the mathematical model is given. Mathematical model of registration of indirect signs of man-made emergency at critical

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4

Bazilo, C. V., M. O. Bondarenko, V. V. Khlivnyi, M. H. Tomenko, and V. I. Tomenko. "Mathematical Modelling of Rod-Type Piezo-Electric Transducers for Acoustoelectronic Devices." Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 86 (September 30, 2021): 58–67. https://doi.org/10.20535/radap.2021.86.58-67.

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The work is devoted to the peculiarities of the construction and study of mathematical models of rod-type piezoelectric transducers, which are widely used in various acoustoelectronic devices (hydroacoustic means of target detection, ultrasonic non-destructive testing, medical diagnostics, etc.). In contrast to the existing mathematical models of piezoelectric transducers (based on amplitude-phase dependences, resonant piezoelectric transducers, equivalent circuits, etc.), the proposed mathematical model makes it possible to establish a dependence, which is a mathematical description of the ac

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5

Rashkevych, N., R. Shevchenko, and T. Vovchuk. "DEVELOPMENT OF A MATHEMATICAL MODEL FOR ANALYSING THE HAZARDOUS IMPACT ON THE STATE OF GROUNDWATER IN CITY AGGLOMERATIONS FROM MISSILE AND ARTILLERY ATTACKS." Municipal economy of cities 1, no. 182 (2024): 229–40. http://dx.doi.org/10.33042/2522-1809-2024-1-182-229-240.

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The authors have developed a mathematical model for analysing the hazardous impact on the groundwater in urban agglomerations from missile and artillery attacks. The mathematical model consists of a system of four analytical dependencies. The first analytical dependence describes determining the area of groundwater intake from the groundwater level, considering the presence of artificial coatings, infiltration, evaporation, and transpiration, as well as the effect of evapotranspiration. The second dependence determines the area of influence of the missile and artillery danger from the type of

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Sorocolat, Nataliia, and Lina Fatieieva. "APPLICATION OF THE ERROR FUNCTION FOR ASSESSING THE QUALITY OF QUALIMETRY OBJECTS." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 4(14) (December 28, 2022): 53–58. http://dx.doi.org/10.20998/2413-4295.2022.04.08.

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The existing functional dependencies between the measured values of quality indicators and their evaluation on a dimensionless scale, which were used to evaluate qualimetry objects of different nature, are analyzed. It is shown that for an objective assessment of qualimetry objects, as a rule, it is necessary to apply nonlinear dependencies. The main task of the researcher is to choose the type of nonlinear dependence, it requires additional scientific research. A tool for choosing a particular nonlinear dependence is to understand the physical essence of the qualimetry object, that is, to und

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Solodovnikov, A. V., D. A. Odentsov, E. V. Kravtsov, V. V. Golubyatnik, and D. A. Shcheblykin. "Mathematical model for calculating pressure in a pulsating combustion chamber." VESTNIK of Samara University. Aerospace and Mechanical Engineering 21, no. 1 (2022): 81–90. http://dx.doi.org/10.18287/2541-7533-2022-21-1-81-90.

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Due to insufficient knowledge of the processes occurring in the chambers of pulsating combustion, as well as lack of mathematical dependencies that make it possible to fully describe the parameters of such chambers, the authors of this article present a model for calculating pressure fluctuations as a function of time. The resulting dependence is based on the fact that the combustion of fuel takes place according to an isochoric cycle, whereas the outflow of gas through a resonant tube is an isothermal process. The conditions for applying the mathematical model and its features are described.

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Nedostup, A. A., and P. V. Nasenkov. "Experimental studies of the characteristics of twisted fishing materials." Trudy VNIRO 198, no. 1 (2025): 123–29. https://doi.org/10.36038/2307-3497-2024-198-123-129.

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The purpose of the work is to develop mathematical dependencies of the physical and mechanical characteristics of twisted fishing materials. The creation of a mathematical apparatus for modeling the geometric and force parameters of twisted fishing materials is a priority task for the development of new materials for industrial fishing and aquaculture.Methods used: Mathematical analysis of the obtained experimental data on the relative elongation and breaking load of fishing materials in order to determine the dependence of the forces on the structural and geometric characteristics of twisted

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9

Vasyliev, Oleksii, Oleksandr Chalyi, and Ilona Vasylieva. "Mathematical Methods and Models in Linguistics." Ukraina Moderna 27, no. 27 (2019): 9–28. http://dx.doi.org/10.30970/uam.2019.27.1060.

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In this article, relevant approaches to creating and using mathematical models in linguistics are examined. Analyzed are the types of mathematical methods used to solve linguistic tasks. Also investigated are the fundamental principles for creating mathematical models. Stressed in particular is that the approach usually applied in solving physical tasks can be effective. Its typical feature is that a universal theory explaining the interaction among a system’s functional elements on the most general level is the basis of the model. In this case, the necessary approximating dependencies are not

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10

Sevastyanova, Yuliya V., Evgeniy А. Toptunov, Natalia V. Shcherbak, and Pavel V. Solntsev. "Determination of the Mathematical Dependence of the Black Liquor Density on the Dry Matter Content (High Yield Softwood Pulp)." Lesnoy Zhurnal (Forestry Journal), no. 1 (February 9, 2021): 192–200. http://dx.doi.org/10.37482/0536-1036-2021-1-192-200.

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A modern evaporator station is an energy-saving production of evaporated liquor with high dry matter content for ensuring the minimum SO2 emissions from the soda recovery boiler. Such stations are equipped with Falling Film devices and consist of 5–7 stages. The necessity to improve and create new black liquor concentrators is driven by the increased attention to environmental issues and the wish to produce liquor with a higher calorific value. The physical properties of black liquor depend on its composition and have a significant impact on the selection and design of evaporators. The main pr

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11

Laskin, A. A., R. R. Yakupov, A. A. Raykov, T. N. Mustafin, S. I. Salikeev, and A. V. Burmistrov. "Mathematical Model of Screw Vacuum Pump Working Process." Proceedings of Higher Educational Institutions. Маchine Building, no. 8 (749) (August 2022): 65–73. http://dx.doi.org/10.18698/0536-1044-2022-8-65-73.

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The screw vacuum pump combines high performance, low ultimate pressure and ability to create an oil-free vacuum. The calculation of the pump characteristics can be performed using mathematical modeling. The article considers main stages of creating a mathematical model: constructing the geometry of the rotors, calculating the dependence of the working cavity volume and the area of the suction and discharge windows on the angle of rotor rotation, determining the main directions of gas flows, calculating the dependence of pressure and temperature on the angle of rotor rotation. The thermodynamic

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12

VASILIEV, A., U. KABYSHEVA, and M. TKACHEVA. "CALCULATION AND EXPERIMENTAL DEPENDENCIES OF INITIAL CARBONATION OF CONCRETE COMPRESSIVE STRENGTH CLASSES C12/15...C50/60." Herald of Polotsk State University. Series F. Civil engineering. Applied sciences, no. 3 (November 15, 2024): 19–27. http://dx.doi.org/10.52928/2070-1683-2024-38-3-19-27.

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The article substantiates the need to study the preliminary carbonization of concrete. Based on laboratory studies of concrete samples of compressive strength classes С12/15…С50/60, mixture compositions of workability grades P1 (OK = 4 cm), a system of calculated and experimental dependencies of initial carbonization КС0 = f(Ц) was obtained. The dependencies were checked using mathematical statistics methods, which showed the adequacy of the obtained dependencies. Obtained depending on the preliminary carbonization КС0 = f(fG c,cube) on the guaranteed compressive strength of concrete for mixtu

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13

Tarashevska, Yuliia Ye. "MODELING THE TELESCOPIC CONNECTION DEVICE OF RAINBOW MUSCLE PROTESES." Wiadomości Lekarskie 73, no. 4 (2020): 751–54. http://dx.doi.org/10.36740/wlek202004124.

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The aim: Mathematical modeling and peculiarities of the proposed telescopic connection design. Materials and methods: For the implementation of the mathematical model of telescopic joints of removable dentures, elements of the external and internal parts of such a design having the same nominal angles of cones, or identical nominal cones of these parts are considered. Results: Dependence of retention force is determined from various parameters, equating it with equilibrium values of compressive dynamic force and the total force of friction. Connection is set between the separate geometricalpar

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14

Morozova, A. V., N. S. Zadorozhnaya, M. A. Mukutadze, and V. I. Kirishchieva. "Mathematical Model of Micropolar Lubricant Considering Viscosity-Pressure Dependence." Journal of Physics: Conference Series 2096, no. 1 (2021): 012104. http://dx.doi.org/10.1088/1742-6596/2096/1/012104.

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Abstract In the study, based on the micropolar fluid flow equation for a “thin layer”, the continuity equation, the equation describing the profile of the molten contour of the guide coated with a low-melting metal alloy, and the equation for the mechanical energy dissipation rate, asymptotic and exact self-similar solution has been found for the zero (without considering the melting) and first (considering the melting) approximation of wedge-shaped support with the slider support profile adapted to the friction conditions and the low-melting metal coating of the guide surface. The research ha

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15

Strokov, A. M. "Force interaction in cam-roller clutch." Izvestiya MGTU MAMI 8, no. 3-1 (2014): 74–79. http://dx.doi.org/10.17816/2074-0530-67697.

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The article describes principles of interaction between the elements and the dependence of transmitted torque on control action in the cam-roller clutches. These dependencies are required for design calculations or mathematical model of such a mechanism obtaining.

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16

Gumarov, Gali S., Vladimir V. Konovalov, Amangeldy E. Sarsenov, Zhanna K. Kubasheva, and Abelshaek A. Rakhimov. "Mathematical modelling of traction resistance of the improved opener of grain seeder." BIO Web of Conferences 17 (2020): 00044. http://dx.doi.org/10.1051/bioconf/20201700044.

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The object of the study is a double disc coulter with a pressure plate. The aim of the research was to simulate the operation of the double disc coulter using a grain seed drill as an example. Analytical dependencies for determining the traction resistance of the improved coulter are presented. The method of calculating the drag resistance of a double disc coulter with an original pressure plate installed on it is given. The components of the traction resistance balance have been determined and the dependence on the sowing depth has been established. 3D graphical dependences of the traction re

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17

Гузик, Н. М., Н. Б. Сокульська, and Л. Д. Величко. "Mathematical model of external ballistics of projectiles." Системи обробки інформації, no. 1 (172) (May 14, 2023): 20–28. http://dx.doi.org/10.30748/soi.2023.172.03.

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The paper presents mathematical model of external ballistics of projectile, fired from cannon. The drag force has a decisive influence on the dynamics of the projectile. Direct calculation of the functional dependence of the drag force on the set of parameters is quite controversial and has not been utilized so far. Therefore, the author calculus the functional relativity, approximately, solving the inverse problem of mechanics. The flight range of a projectile at certain aiming angles, noted in the firing tables, determine the drag force according to the effect on a projectile of its weight a

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18

Krupenev, D. S., V. M. Piskunova, and A. G. Galfinger. "Modeling of thermal power plants in the study of reliability of power supply and energy security." Power engineering: research, equipment, technology 25, no. 2 (2023): 12–25. http://dx.doi.org/10.30724/1998-9903-2023-25-2-12-25.

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RELEVANCE. Maintaining the required level of energy security (ES) and reliability of fuel and energy supply is one of the priority tasks in the management of the energy sector. In the functioning of the fuel and energy complex various threats are possible, which can lead to the violation of the reliability of fuel and energy supply and the emergence of shortages ofvarious types of energy resources. To assess the level of energy security, approaches are considered to form a mathematical model of the FEC, which combines all sectors of the energy sector. Despite the trends of transition to low-ca

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19

Tanaka, Shodai, Hiroshi KORI, and Ayumi Ozawa. "A mathematical study about the sustaining phenomenon of overtone in Flageolet harmonics on bowed string instruments." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A344. http://dx.doi.org/10.1121/10.0023745.

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Flageolet harmonics is a playing technique, in which a player lightly touches a nodal point on a string with their finger. Previous studies have reported that the harmonic sound sustains for a short time after the finger is removed from the string while flageolet harmonics is performed on bowed string instruments. However, the mechanism of this harmonics-sustaining phenomenon and the parameter dependency of its sustaining time remains unclear. The purpose of this study is to mathematically investigate the dependence of sustaining time on parameters related to violin playing and string characte

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20

E.F., Sagadeeva, and Tagrifullina A.I. "APPLICATION OF MATHEMATICAL METHODS IN AGRICULTURE." Russian Electronic Scientific Journal 55, no. 1 (2025): 756–65. https://doi.org/10.31563/2308-9644-2025-55-1-756-765.

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The article presents an analysis of the dependence of meat and meat products consumption per capita on the average per capita monetary income in the Volga Federal District in 2023. The relevance of the study is due to the need to analyze the factors influencing the structure of food consumption in the regions of Russia. Using the method of least squares and statistical analysis, a statistically insignificant relationship between the variables under consideration was revealed. The results indicate the limitations of a linear model for describing this dependence and the need for further research

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21

Kryuchkov, Dmitry A., and Sergey V. Ivanyakov. "EXPERIMENTAL DETERMINATION OF THE VOLUMETRIC HEAT TRANSFER COEFFICIENT IN COOLING TOWERS WITH VERTICAL CONTACT DEVICES." Oil and Gas Business, no. 2 (April 17, 2024): 251–68. http://dx.doi.org/10.17122/ogbus-2024-2-251-268.

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Intensification of heat and mass transfer processes in industrial drop cooling towers is one of the main areas of research in modern heating engineering. Increasing the efficiency of transfer processes during the direct interaction of water and air in cooling tower sprinklers is possible when moving from creating a contact surface in the form of a flowing liquid film to sprinklers creating drop-film surfaces. One of the possible devices that create such surfaces are devices with vertical contact grids, which make it possible to obtain significant drop surfaces at low energy costs. A mathematic

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22

Schultze-Lutter, F. T. K. "Generating prediction rules: dependence on the mathematical model." European Psychiatry 17 (May 2002): 169. http://dx.doi.org/10.1016/s0924-9338(02)80733-7.

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23

Macal, Charles M., and Arthur P. Hurter. "Dependence of bilevel mathematical programs on irrelevant constraints." Computers & Operations Research 24, no. 12 (1997): 1129–40. http://dx.doi.org/10.1016/s0305-0548(97)00025-7.

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24

Serenko, Andrei, and Aleksandr Golovko. "The theoretical basis for the prediction of early strength plasticized cement stone." MATEC Web of Conferences 265 (2019): 01009. http://dx.doi.org/10.1051/matecconf/201926501009.

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Theoretical analyses and experimental data to predict durability of plasticized cement systems at an early age. Proposed to use to assess the compatibility and selection of cement and chemical additives on the early stage hydration of power rate dependence of M. Balhina. Methodology and mathematical dependences for determining the power indicator at an early age.

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Bazilo, C. V., M. O. Bondarenko, L. M. Usyk, E. V. Faure, and Yu I. Kovalenko. "Mathematical Modelling of Disk Piezoelectric Transducers for Acoustoelectronic Devices." Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 91 (March 30, 2023): 37–45. https://doi.org/10.20535/radap.2023.91.37-45.

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This study has presented an algorithm for assembling, solving, and analyzing the results obtained by mathematical modeling of the disc piezoelectric transducers, which are widely used in hydroacoustics, microelectronics, microcircuit engineering (for example, as components of receiving antennas of hydroacoustic communication devices). The models developed in this study enable us to establish dependencies, which represent a mathematical description of the electroacoustic connection between the wave fields in different sections of the disc piezoelectric transducers. Analytical dependences obtain

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26

Strokov, A. M. "Features of force interaction in cam-roller clutch with hydraulic activation." Izvestiya MGTU MAMI 9, no. 3-1 (2015): 124–29. http://dx.doi.org/10.17816/2074-0530-67244.

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The article describes principles of interaction between elements and the dependence of transfer moment on control action in cam-roller clutch with hydraulic activation. The features of cam-roller clutch with hydraulic activation comparing to cam-roller clutch with individual elements spring loading are considered. These dependences are necessary for design calculation and construction of such mechanism mathematical model.

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27

Kummaraka, Unyamanee, and Patchanok Srisuradetchai. "Interval Estimation of the Dependence Parameter in Bivariate Clayton Copulas." Emerging Science Journal 7, no. 5 (2023): 1478–90. http://dx.doi.org/10.28991/esj-2023-07-05-02.

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In various disciplines, discerning dependencies between variables remains a crucial undertaking. While correlation measures like Pearson, Spearman, and Kendall provide insight into the degree of two-variable relationships, they fall short of revealing the intricate structure of dependencies between these variables. The Clayton copula, known for its flexible attributes, becomes instrumental in unveiling this dependency structure. This paper aims to advance knowledge by providing an explicit formula for creating Wald confidence intervals (CIs) for the dependence parameter in a bivariate Clayton

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28

Podoplelov, Evgeniy, Sergey Scherbin, Ivan Semenov, and Anatoliy Dement'ev. "SIMULATION OF THE PROCESS OF HYDROGEN SULFIDE DESORPTION FROM PHENOLIC-SULFIDE WATER IN A NOZZLE COLUMN." Bulletin of the Angarsk State Technical University 1, no. 17 (2023): 112–16. http://dx.doi.org/10.36629/2686-777x-2023-1-17-112-116.

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The process of hydrogen sulfide desorption from phenolic-sulfide water in the nozzle layer is mathematically modeled. A graphical dependence of the height of the nozzle layer on the con-sumption of an inert carrier – nitrogen is obtained. This mathematical model can be used in the calculations of industrial desorption columns

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Ushakov, Arseni V., Kirill S. Rybakov, Anna V. Khrykina, and Irina M. Gamayunova. "Probabilistic models of the capacity of the electrode material in a wide range of current loads." Electrochemical Energetics 24, no. 2 (2024): 59–75. http://dx.doi.org/10.18500/1608-4039-2024-24-2-59-75.

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An approach for constructing mathematical models of the current dependence of the capacity of electrode materials is proposed. The approach involves analyzing the probabilities of favorable and unfavorable events occurring on the elements of electrical equivalent circuits that can be used to model the electrode. Several probabilistic models that correspond to different combinations of a capacitor, a Warburg element and a constant phase element in an electrical circuit are proposed. As an example, the validation of specific models to describe the experimental current dependences of the capacity

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Senotova, Svetlana. "MATHEMATICAL MODEL FOR PRODUCING ETHYL BROMIDE." Modern Technologies and Scientific and Technological Progress 2023, no. 1 (2023): 137–38. http://dx.doi.org/10.36629/2686-9896-2023-1-137-138.

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The process of producing ethyl bromide was considered. A mathematical model is recorded. A dependence of the sulphuric acid discharge rate on time and temperature is obtained, which allows controlling the temperature regime of the reactor

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Loisel, Claude. "EXPLORING DEPENDENCE STRUCTURES IN FINITE EXCHANGEABLE SEQUENCES." Global Multidisciplinary Journal 02, no. 02 (2023): 01–06. http://dx.doi.org/10.55640/gmj-abc113.

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This study delves into the exploration of dependence structures in finite exchangeable sequences, shedding light on the intricate patterns that govern the relationships between elements within such sequences. Exchangeability, a fundamental concept in probability theory, posits that the joint distribution of a sequence remains invariant under permutations of its elements. By investigating finite exchangeable sequences, this research aims to uncover and comprehend the underlying dependence structures that influence the statistical behavior of the sequence elements. We employ mathematical modelin

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Zabolotnii, Serhii, and Sergii Mogilei. "MODIFICATIONS OF EVANS PRICE EQUILIBRIUM MODEL." Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska 13, no. 1 (2023): 58–63. http://dx.doi.org/10.35784/iapgos.3507.

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The paper regards the classical Evans price equilibrium model in the free product market in the aspect of regarding the opportunities for expanding (modifying) the model given that is aimed at perfecting the accuracy of its mathematical formulating. As an accuracy criterion, we have chosen a summary quadratic deviation of the calculated indices from the given ones. One of the approaches of modifying the basic Evans model is suggesting there is a linear dependence between price function and time as well as its first and second derivatives. In this case, the model will be described through diffe

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Owade, Kennedy Jackob, Akinyi Okaka, and Frankline Tireito. "A Between-Host Cholera Mathematical Model Incorporating Temperature Dependence." African Journal of Empirical Research 5, no. 4 (2024): 85–101. http://dx.doi.org/10.51867/ajernet.mathematics.5.4.8.

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This paper establishes a between-host cholera model with temperature dependent parameter. This is done using system of ODEs to analyse the effect of temperature change on cholera disease. The model analysis reveals that when R0 < 1, the disease free equilibrium point is locally and globally asymptotically. It is also noticed that if R0 > 1, the endemic equilibrium point is locally and globally asymptotically stable. The sensitivity analysis of model parameters shows that R0 depends intensively on infection rate of pathogen α1 normalized with temperature. An increase in infection rate o

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Gólczewski, Tomasz, Wojciech Lubiński, and Andrzej Chciałowski. "A mathematical reason for FEV1/FVC dependence on age." Respiratory Research 13, no. 1 (2012): 57. http://dx.doi.org/10.1186/1465-9921-13-57.

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NEACȘU, Marian-Iulian. "Mathematical Modeling of the Casting Process of the Second Merger." Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science 45, no. 4 (2022): 53–56. http://dx.doi.org/10.35219/mms.2022.4.09.

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The paper shows the method of making the equations of the mathematical model that describes the dependence of several mechanical and casting properties on the chemical composition of the cast irons of the second fusion and on the casting conditions.The chemical composition taken into account refers to the contents of C, Si and Mn and the casting conditions analysed were: casting temperature, superheating time and superheating temperature.After performing the specific mathematical calculations, the specific mathematical equations were obtained that describe the dependence of the studied propert

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Glotka, O. A., and V. I. Olshanetskii. "Mathematical forecasting composition of secondary carbides in the single-crystal superalloys." Archives of Materials Science and Engineering 111, no. 1 (2021): 34–41. http://dx.doi.org/10.5604/01.3001.0015.5563.

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Purpose: Predicting the specifics of the distribution of alloying elements between secondary carbides, their topology, and morphology, as well as the composition for a single-crystal multicomponent system of the type Ni-11.5Cr-5Co-3.6Al-4.5Ti-7W-0.8Mo-0.06C using the calculated CALPHAD (passive experiment) versus scanning electron microscopy (active experiment). Design/methodology/approach: This work presents the results of studies of the distribution of chemical elements in the composition of carbides, depending on their content in the system. The studies were carried out using an electron mi

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Banerji, T., and R. A. Shestakov. "Scaling the Hydraulic Efficiency of a Drag-Reducing Agent." Oil and Gas Technologies 147, no. 4 (2023): 45–49. http://dx.doi.org/10.32935/1815-2600-2023-147-4-45-49.

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The purpose of this article is to deduce the dependence of the hydraulic efficiency of drag-reducing agent on real objects on the hydraulic efficiency of drag-reducing agent in bench or laboratory conditions for two cases: smooth and rough pipeline wall. The method used in this article is a mathematical analysis of the dependenciesof the efficiency of drag-reducing agent in pipelines of different diameters with different roughness of the pipeline wall.This article analyzes the dependencies for calculating the coefficient of hydraulic resistance during flow in pipelines of various diameters. Th

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Zamytskyi, O. V., N. O. Holiver, N. V. Bondar, and S. O. Kradozhon. "Mathematical model of the process of drying fine dispersed materials under the influence of alternating electric current." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 3 (2021): 51–56. http://dx.doi.org/10.33271/nvngu/2021-3/051.

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Purpose. Establishing the dependences and determining rational parameters of the process of drying fine materials by direct influence of an electric current. Methodology. In the work, theoretical, analytical, empirical, and experimental methods as well as methods of mathematical statistics are used. Mathematical modeling of the process occurring during drying of finely dispersed materials by direct influence of alternating current is carried out. Findings. As a result of the research on the basis of physical representations of the process of drying capillary-porous material, a mathematical mod

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Okhrimenko, Viacheslav, and Maiia Zbіtnieva. "Mathematical Model of Tubular Linear Induction Motor." Mathematical Modelling of Engineering Problems 8, no. 1 (2021): 103–9. http://dx.doi.org/10.18280/mmep.080113.

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Problem of calculation of distribution of magnetic field induction in clearance of tubular linear induction motor (TLIM) is considered. Mathematical model is represented by Fredholm integral equations of second kind for complexes of electric field strength and density of coupled magnetization currents at interface of environments. Algorithm of calculation of distribution of magnetic field induction in TLIM clearance has been developed. Dependence of magnetic field induction in motor clearance on value of pole division is investigated. There is area of optimum pole pitch. Reliability of results

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Slyamkhan, Meiirbek, Aigul Ganeeva, and Lea Dorel. "Interrelation of levels of mathematical literacy in conditions of distance learning." World Journal on Educational Technology: Current Issues 14, no. 3 (2022): 757–67. http://dx.doi.org/10.18844/wjet.v14i3.7212.

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Mathematical literacy and knowledge play a significant role in the formation of competencies. The purpose of the study is to determine the levels of mathematical literacy and their dependence on the type of thinking and the level of creative abilities in a distance learning environment. The research objectives are as follows: assess thinking (by type) and creativity; assess mathematical literacy; and determine the relationship between the level of mathematical literacy and thinking/creativity indicators. In line with this, it was established that the ratio of the spread in the values of the de

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Макеєв, В. І., В. В. Воронько, Ю. І. Пушкарьов, П. І. Гайда та О. Ю. Пащук. "ОСОБЛИВОСТІ ВИЗНАЧЕННЯ ВИТРАТИ СНАРЯДІВ І СПОСОБУ ОБСТРІЛУ КОЛОН ПРОТИВНИКА". Open Information and Computer Integrated Technologies, № 90 (18 червня 2021): 104–14. http://dx.doi.org/10.32620/oikit.2020.90.08.

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Columns, which are highly maneuverable targets and any other targets, return the damage to the opponents. As a result of the shelling, the enemy column was informed about the systematic study and deployment of its reserves, management violations, and unfavorable conditions were created for the use of effective types of fire by other means of destruction. The result of artillery fire reveals a mathematical combination of irreversible damage and delay time of the enemy column or Woz, which is characterized by damage to the group counteracting due to the delayed columns and the adjustment of its

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Mamedova, Leyla Eldar gyzy, Maria Eugenievna Gogolukhina, and Tatiana Nikolaevna Zhinkina. "Economic and mathematical modeling in pricing of shipbuilding production." KANT 44, no. 3 (2022): 42–48. http://dx.doi.org/10.24923/2222-243x.2022-44.6.

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The purpose of the study is to analyze the results of the economic activity of the enterprise, the parameters that affect the price and pricing using mathematical modeling and the use of exponential dependence. To obtain a reliable forecast of profitability ratios for making managerial decisions, the dependences of the following values over time with an interval of two to twelve months were identified: the relationship between the law of price change and total revenue, costs, current and total profit; a model for determining the expediency of price changes is proposed. The data obtained using

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Prisnyakova, L., and I. Agapova. "POSSIBILITY OF MATHEMATICAL MODELING OF PSYCHOLOGICAL PROCESSES." Znanstvena misel journal, no. 73 (December 26, 2022): 61–63. https://doi.org/10.5281/zenodo.7483311.

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The authors demonstrate the possibilities of mathematical modeling of psychological processes, in particular, the model of information processing by memory, which in the future opens up wide opportunities for further research and modeling of the dependence of cognitive processes on other mental phenomena.

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RIVELLO, EDOARDO. "FORMAL REPRESENTATIONS OF DEPENDENCE AND GROUNDEDNESS." Review of Symbolic Logic 13, no. 1 (2019): 105–40. http://dx.doi.org/10.1017/s1755020319000315.

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AbstractWe study, in an abstract and general framework, formal representations of dependence and groundedness which occur in semantic theories of truth. Our goals are (a) to relate the different ways in which groundedness is defined according to the way dependence is represented and (b) to represent different notions of dependence as instances of a suitable generalisation of the mathematical notion of functional dependence.

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Egorova, S. V., O. V. Makhnenko, G. Yu Saprykina, and D. P. Syneok. "Mathematical models of the dependence of mechanical properties on chemical composition of steels for ESW." Paton Welding Journal 2021, no. 1 (2021): 45–54. http://dx.doi.org/10.37434/tpwj2021.01.09.

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Бєлявський, О. В., та О. В. Косенко. "МОДЕЛЮВАННЯ ХАРАКТЕРИСТИК ГІДРАВЛІЧНИХ ПРИСТРОЇВ АВТОМАТИКИ". Open Information and Computer Integrated Technologies, № 99 (24 червня 2024): 95–100. http://dx.doi.org/10.32620/oikit.2023.99.09.

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The paper presents the results of calculations of the regression model of hydraulic losses of technological equipment, in particular, the gate pump SV1-25, which is used in the practice of laboratory research of hydraulic equipment (GЕ) as part of the educational process at the Department of Theoretical Mechanics, Mechanical Science and Robotic Systems of NAU "KHAI". The task of the work was to establish the nature and actual hydraulic losses depending on the hydraulic load. According to the obtained data, in turn, the goal was to establish a mathematical model of the dependence of losses on t

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Stepus, Alexander, and Elmira Galyamova. "Forecasting the working capacity of personnel at the recruitment stage as a factor in ensuring the sustainable development of the enterprise." E3S Web of Conferences 291 (2021): 07012. http://dx.doi.org/10.1051/e3sconf/202129107012.

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A variant of minimizing personnel costs while maximizing their productivity and efficiency is proposed, by selecting the most efficient ones even when hiring. The article analyzes the influence of factors of personnel competitiveness in the modem labor economy on the efficiency of personnel. A system of factors and quantifiable parameters that affect performance is presented. Based on the analysis of the correlation and mathematical dependence of the factors, mathematical dependencies are determined that allow us to predict the efficiency of personnel when hiring. The obtained formulas for pre

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Symak, Dmytro, Vira Sabadash, Jaroslaw Gumnitsky, and Zoriana Hnativ. "Kinetic Regularities and Mathematical Modelling of Potassium Chloride Dissolution." Chemistry & Chemical Technology 15, no. 1 (2021): 148–52. http://dx.doi.org/10.23939/chcht15.01.148.

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The dissolution process of potassium chloride particles in the apparatus with two-blade mechanical stirrer was investigated and the mass transfer coefficient was determined. The experimental results were generalized by criterion dependence. The independence of the mass transfer coefficient from the solid particles diameter was confirmed. A countercurrent process of potassium salt dissolution in two apparatuses with a mechanical stirring was considered. A mathematical model for countercurrent dissolution was developed and the efficiency of this process was determined.

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BURYI, Grigory, and Ilya POTERYAEV. "Determination of the optimal strength and speed of soil digging of a single-bucket hydraulic excavator with a spherical shape bucket." Sustainable Development of Mountain Territories 14, no. 2 (2022): 321–29. http://dx.doi.org/10.21177/1998-4502-2022-14-2-321-329.

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Introduction. The paper describes the scope and purpose of single-bucket hydraulic excavators. The method of digging a single-bucket excavator with a bucket of spherical shape, which allows to increase productivity, is considered. The urgency of increasing the productivity of these machines is formulated. The purpose of the work: to determine the optimal strength and speed of digging the soil of a single-bucket hydraulic excavator with a spherical bucket. Research methodology. To confirm the effectiveness of the proposed bucket design, a diagram of the forces acting on it during digging is pre

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Kustov, S. A., S. P. Stepanenko, and A. Ya Kuzmych. "Theoretical studies of the movement speed of the sunflower material in the working gap of the threshing-separating device of the plot combine." Mehanization and electrification of agricultural, no. 13(112) (2021): 97–105. http://dx.doi.org/10.37204/0131-2189-2021-13-10.

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Annotation Purpose. Refinement of the mathematical description for calculating the movement of particles of sunflower material in the working gap of the threshing-separating device of the plot combine. Methods. Theoretical studies were carried out on the basis of the analysis of the dynamics of the movement of particles of sunflower material relative to the surface of a closed-type drum of a selection combine. Results. A mathematical description of the movement of particles of sunflower material in the working gap of the threshing-separating device of a selection combine with a closed drum is

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