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Study on material point failure probability of complex jointed rock masses based on peridynamics
Published 2025-03-01“…Efficient parallel computing programs have been developed, markedly enhancing the computational efficiency of large-scale Monte Carlo simulations for PD analysis. The concept of material point failure probability (PFP) is presented, investigating the variation of PFP contour maps after excluding specific joint dips. …”
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Transformation of initial cartographic materials for the “Main State Topographic Map” to coordinate system UCS-2000
Published 2024-01-01“…The goal of the article is to research the problem of transformation of points coordinates by the rigorous mathematical method for referencing cartographic materials from the coordinate systems CS-42/CS-63 to the State Geodetic Coordinate Reference System UCS-2000 (after this – UCS-2000) by geographic information systems (GIS) for creation (updating) digital topographic maps at the scale of 1:50,000 to create the seamless topographic database of the “Main State Topographic Map” on the territory of Ukraine. …”
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Comparison of the Regression Method and The Neural Network Method in Specific Cases of Engineering Practice
Published 2025-04-01“…The second very important step was to compare the applicability of these methods from the point of view of limiting criteria and to define their advantages and disadvantages in practical use. …”
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VIBRATION AND SHOCK ANALYSIS AND RESEARCH OF DIFFERENT MATERIAL FLOWS ON TRANSFER POINT OF BELT CONVEYORS
Published 2024-10-01“…There is a certain height difference between the two belts at the transfer point of the belt conveyor in the coal preparation plant.Affected by factors such as the size of the coal block on the upper end face and the water content,it will cause different degrees of vibration impact on the belt conveyor,thus affecting the service life of the belt conveyor body and the roller.In order to explore the influence of the material flow on the vibration impact of transfer point,combined with field investigation and related theories,it was concluded that the main influencing factors of blanking impact are material flow particle size level and water content.Then,the field test was carried out by using optical fiber vibration sensor,data acquisition card and Labview test system.The vibration signals of the belt conveyor under the blanking port under the impact of different material flows were collected and processed.The test results show that the vibration impact of different particle size material flows on the transfer point is different.The peak value of the vibration waveform of the small particle size material flow on the transfer point is 20%of the large particle size material flow,and the peak value of the self-power spectrum waveform is 0.625%.Different water content has different vibration impact on the transfer point.The peak value of the vibration waveform of the material flow with less water content is 60%of the material flow with more water content,and the peak value of the self-power spectrum waveform is reduced to 45%.The research results provide a reasonable method for reducing the vibration impact of the belt conveyor transfer point.…”
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Alternative construction materials: a point of view on energy reduction and indoor comfort parameters
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Analysis of Raw Material Control Using the EOQ Method in the Suwar-Suwir Agro-Industrial Business UD Sari Rasa, Jember
Published 2024-06-01“…The method used in this study is EOQ (Economic Order Quantity), to determine the optimal quantity of raw material orders, ROP (Reorder Point) analysis tool to find out when is the right time to reorder raw materials, Safety Stock analysis tool is used to determine safety stock and Total Cost of Inventory (Total Cost) to calculate the total cost of ordering raw materials. …”
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An Evaluation of English Textbook "Prospect 3" in Iranian Junior High Schools: A Mixed Methods Study
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Modern Evaluation Methods at Various Levels of Education
Published 2019-07-01“…However, along with positive dynamics of active methods application for learning assessment, non-systemic use of such methods is noted as well. …”
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Dynamical systems theory approach in oceanography: a review on achievements, limitations, verification and validation of Lagrangian methods
Published 2025-07-01“…The modern LA explores dynamical systems theory (DST) methods to detect locations of geometric structures hidden in chaotic fluid flows and organizing transport, stirring and mixing in the ocean. …”
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Methods for Building Successful chatbot Communication in the Discourse of Sales in the Field of Digital Goods (Mobile Phones) on the Example of English and Russian Language Materia...
Published 2023-11-01“…Preparation of a communication model updated from the point of view of a certain discourse and comparison of research data through the materials of two languages will help to identify similarities and differences for each area, and, among other things, will ensure an increase in the efficiency of the communication process built through chatbots in a business environment.…”
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Suggestions for Designing Test Specimens and Testing Procedures to Impregnate Wood Material by Pre-vacuumed Immersion Method Realized Using a Special Device
Published 2021-08-01“…This study, which promised remarkable contributions for designing of experimental samples and trial device to treat wood by pre-vacuumed immersion method, was conducted to test the impregnability of wood material according to the pre-vacuumed immersion process and to reveal the usability of plug (cylindrical) samples in impregnation experiments in addition to the cuboid (rectangular prism) samples. …”
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Hybrid Technology of Water Purification Based on the Method of Dosing Sorption Material for Water Treatment Systems of Thermal Power Plants and Water Supply
Published 2024-07-01“…This goal is achieved by implementing the following tasks: analysis of powdered sorption materials used in water treatment technology, selection of an effective dose and entry point of the selected sorption material based on experimental studies, analysis of the results obtained; and develop-ment of technical solutions for the organization of a hybrid purification plant. …”
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Positron annihilation rate in point defects of reactor materials within the modified Tao - Eldrup model
Published 2023-06-01“…The dependence of the positron lifetime on the height and width of the potential well, which occurs at the point defects, was determined. The results obtained within the framework of the modified model provide important information for the analysis of positron lifetime spectra in irradiated materials and data for the verification of quantitative calculations by the method of density functional theory.…”
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Parallel Bayesian Optimization of Thermophysical Properties of Low Thermal Conductivity Materials Using the Transient Plane Source Method in the Body-Fitted Coordinate
Published 2024-12-01“…The transient plane source (TPS) method heat transfer model was established. A body-fitted coordinate system is proposed to transform the unstructured grid structure to improve the speed of solving the heat transfer direct problem of the winding probe. …”
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Critical Points for the Production of Polymeric Microspheres Used in X-Ray Surgery
Published 2020-08-01“…The aim of the work was to develop a technological scheme for the production of polymer microspheres and a description of critical control points of production.Materials and methods. The study of the intermediate product was carried out using a Levenhuk D320L microscope (Levenhuk Inc, USA). …”
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Modelling The Effect Size of Microbial Fuel Cells Using Bernstein Polynomial Approach via Iterative Method
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