Browsing Наука и Техника by Title

Now showing items 1-20 of 917

    • 3D-Modeling for Life Cycle of the Structure 

      Leonovich, S. N.; Riachi, J. (БНТУ, 2021)
      Owners and construction management are in permanent search to increase competitiveness, reduce cost and time and maintain a high quality of products and services. In this objective project management tend to organize work execution by implementing comprehensive, linked and sequential processes, making full use of every work effort and limiting work duplication and rework. Since ...
      2021-02-04

    • 3D-бетонирование – составы, методики и свойства смесей 

      Самуйлов, Ю. Д.; Трепачко, В. М.; Батяновский, Э. И. (БНТУ, 2022)
      В статье отражена проблематика технологии 3D-бетонирования, достаточно интенсивно развивающейся в современных условиях строительного производства. Важнейшим условием ее практической реализации является разработка составов бетонных смесей, обеспечивающих необходимые реологические (технологические) свойства для формования изделий, элементов строительных конструкций или конструкции ...
      2022-11-11

    • A Two-Echelon Green Supply Chain for Urban Delivery 

      Rossolov, A.; Lobashov, O.; Kopytkov, D.; Botsman, A.; Lyfenko, S. (БНТУ, 2019)
      In recent years the urbanization to affect many countries of the world has made the significant changes to the material flow at all levels of the supply chain. The last mile logistics operating in the urban area has also changed notably. An increase in the volume of material flow within cities has led to a growth in the number of deliveries and the freight turnover, accordingly. ...
      2019-12-06

    • Ab-Initio моделирование электронных свойств сверхтонких пленок оксидов редкоземельных элементов для сенсорных наносистем 

      Гулай, А. В.; Колешко, В. М.; Стемпицкий, В. Р.; Левченко, Н. В.; Гулай, В. А.; Козлова, О. А. (БНТУ, 2014)
      Выполнено Ab-Initio моделирование электронных свойств сенсорных наноматериалов на основе редкоземельных оксидов (например, оксида иттрия). Предложен способ моделирования тонких пленок нанометрового масштаба в программном пакете VASP, заключающийся в имитации слоя материала с толщиной, равной размеру элементарной кристаллической ячейки. Разрыв атомных связей в кристалле по одной ...
      2014-09-26

    • About Application the Tyre-Road Adhesion Determination of a Vehicle Equipped with an Automated System of Brake Proportioning 

      Leontiev, D. N.; Nikitchenko, I. N.; Ryzhyh, L. A.; Lomaka, S. I.; Voronkov, O. I.; Hritsuk, I. V.; Pylshchyk, S. V.; Kuripka, O. V. (БНТУ, 2019)
      The paper considers a method for calculation and evaluation of an automated brake proportioning system and it also describes assessment of efficiency while using cohesion forces of an automated system during vehicle braking process (MAZ 256200 taken as an example). A method for efficiency estimation of the vehicle braking equipped with an automated brake proportioning system is ...
      2019-10-21

    • Algorithm of Plastic Concrete Crack Resistance is Calculation under Capillary Shrinkage Using Generalizing Criteria 

      Leonovich, S. N. (БНТУ, 2018)
      The method of concrete crack-resistance prediction at early age is developed at capillary shrinkage with use of approaches of fracture mechanics, which is guided by the concept of accumulation of defects in structure in the form of capillaries and cracks to their critical concentration of Cc. At the same time process at two stages is considered: on the first – process of formation ...
      2019-01-02

    • Analysis and Implementation of Metamaterial-Inspired Microstrip Antenna for Wireless Applications 

      Pande, S. V.; Patil, D. P.; Sangole, M. K.; Antonov, S. (БНТУ, 2024)
      In this paper, a novel metamaterial-inspired microstrip antenna for wireless applications is proposed. The proposed design consists of a radiating path on top and a uniformly distributed split ring-shaped metamaterial structure on the ground. The presented antenna of 50´38 mm with a thickness of 1.6 mm is printed on FR4 substrate and resonates at 1.80 GHz. The design was fabricated ...
      2024-10-17

    • Analysis of Efficiency of Research & Development Activities among Countries with Developed and Developing Economies Including Republic of Belarus while Using Method of Stochastic Frontier Approach 

      Zhukovski, I. V.; Gedranovich, A. B. (БНТУ, 2016)
      В статье исследуется вопрос оценки эффективности научно-исследовательской деятельности 69 стран мира с развитой и развивающейся экономикой с помощью метода стохастического анализа данных (Stochastic Frontier Analysis, SFA). В качестве входных показателей (ресурсов) для расчета эффективности использовали следующие индикаторы: количество ученых на один миллион населения, количество ...
      2016-12-08

    • Analysis of Implementation Effectiveness of Two Working Fluids Characterized by Different Viscoelastic Characteristics at Hydrodynamic Impact on the Borehole Bottom Zone 

      Kupavykh, K. S.; Kupavykh, A. S.; Morenov, V. A. (БНТУ, 2019)
      Combination of hydrodynamic impact on the formation with acid treatment may be seen as a promising direction in the field of well development and repair in complex geological conditions. With multiple repetition of hydraulic shocks in conjunction with the injection of acid solution, the depth and opening of cracks gradually increases, which contributes to a deeper penetration of ...
      2019-04-16

    • Analysis of the Problem of Electric Buses Charging in Urban Transport 

      Czerepicki, A.; Choromanski, W.; Kozlowski, M.; Kazinski, A. (БНТУ, 2020)
      The electric bus is an ecological means of transport. Its operation reduces the negative impact on the environment. The transition to electric urban transport is in line with the concept of sustainable development of the European Union and the Polish “Act on Electromobility and Alternative Fuels”. Today, on the streets of Polish cities, electric buses are increasingly replacing ...
      2020-08-04

    • Analysis of the State of the Road Traffic Safety in the Republic of Kazakhstan 

      Ibrayev, K.; Ibrayev, А.; Kapskiy, D.; Kot, Y.; Rybinskiy, А.; Bogdanovich, S. (БНТУ, 2019)
      The article presents the results of the study of the road traffic safety on the automobile roads of the Republic of Kazakhstan. We performed the analysis of the main indicators, specifying the state of the road traffic safety on the automobile roads of the republican significance of the Republic of Kazakhstan. In many regulatory acts, such as “The Priority Action Plan for Improving ...
      2019-12-06

    • Analysis of Trams’ Consumption Depending on the Type of Traffic Light Used 

      Czerepicki, A.; Gorka, A.; Szustek, J. (БНТУ, 2019)
      In the XXI century, when environmental awareness is growing and the impact of human activity on the planet is more and more noticeable, striving to minimize energy consumption seems to be a necessary direction in the development of technology. This development cannot take place without an initial understanding and describing the relationships influencing specific technologies. ...
      2019-12-06

    • Automated Tire Pressure Control System for Multi-Purpose Wheeled Vehicles 

      Boikov, V. P.; Guskov, V. V.; Pavarekha, A. S. (БНТУ, 2021)
      The cross-country capability of multi-purpose wheeled vehicles is one of the most important operational properties of these technical objects. In many ways, it is determined by their traction characteristics. There are a number of ways to improve traction and coupling properties of multipurpose wheeled vehicles, the main ones are the use of various kinds of traction control ...
      2021-02-04

    • Automobile Absorption Conditioner 

      Ilyin, A. Р.; Terentiev, A. N.; Arslanov, F. R. (БНТУ, 2021)
      The purpose of this study is to develop a circuit for an automobile air conditioner, which will reduce the consumption of power developed by the engine. This paper proposes the design of an automobile absorption air conditioner. A description of the principle of operation of an automobile absorption air conditioner operating on a cycle of a one-stage absorption refrigeration ...
      2021-10-08

    • Battery Ageing as Part of the System Design of Battery Electric Urban Bus Fleets 

      Ufert, M.; Baker, B. (БНТУ, 2020)
      The lifetime of traction battery systems is an essential feature of the economy of battery electric urban bus fleets. This paper presents a model for the analysis and prediction of the lifetime of urban electric bus batteries. The parameterization of the model is based on laboratory measurements. The empirical ageing model is an integral part of a three-stage battery model, which ...
      2020-02-04

    • Behavioral Characteristics of Cement Concrete Pavements in South Kazakhstan: Climatic Changes and Optimal Construction Method 

      Sakanov, D.; Saginov, Z.; Mominova, S.; Ussenkulov, Z.; Kim, Kwang-don (БНТУ, 2022)
      The present paper describes experiments and research outcomes concerning the construction of cement concrete pavements in South Kazakhstan, taking into account significant climate changes. The study has identified potential problems in the construction of cement concrete pavements in the region, where there was no experience of their construction until the mid-2000s. In order to ...
      2022-04-06

    • Blending Control of Trolleybus Traction and Brake Drives to Enhance Braking Efficiency of Vehicle 

      Safonau, A. I. (БНТУ, 2021)
      The widespread use of green public transport is a priority strategy to reduce a congestion and pollution from road traffic in many cities. The trolleybus is a type of urban public electric transport, which is considered as a promising tool for increasing the efficiency of public transport and achieving the goals of sustainable development and quality of life in the city. The ...
      2021-04-08

    • Calculation of Particle Flow Temperature during Plasma Spraying of Mixture Consisting of Self-Fluxing Powder and Ceramics 

      Kalinichenko, A. S.; Krivosheyev, Yu. K.; Meshkova, V. V.; Devoino, O. G. (БНТУ, 2018)
      Plasma spraying is one of the most effective methods allowing both to restore worn surfaces of parts and create wearresistant coatings on new parts aiming the increase of their service life. Properties of the produced coatings depend on number of parameters, such as a plasma temperature, a chemical and fractional composition of the sprayed mixture, a distance from a plasma torch ...
      2018-06-01

    • Cement-Based Materials Modified with Nanoscale Additives 

      Polonina, E. N.; Leonovich, S. N.; Khroustalev, B. M.; Sadovskaya, E. A.; Budrevich, N. A. (БНТУ, 2021)
      The most common and reliable material without which modern construction is indispensable is concrete. The deve- lopment of construction production is pushing for new solutions to improve the quality of concrete mix and concrete. The most demanded and significant indicators of a concrete mixture are the compressive strength and mobility of the concrete mixture. Every year, the ...
      2021-06-07

    • City Delivery Routes Planning Based on the Ant Colony Algorithm 

      Olkhova, M.; Roslavtsev, D.; Matviichuk, O.; Mykhalenko, A. (БНТУ, 2020)
      For any company that sells its products in the networks of city stores, the urgent issue is the optimal delivery of their goods. During routing it is necessary to take into account many restrictions caused by specific conditions of transportation process in the city: number of cargoes, nature of cargoes, delivery time, structure of fleet and its presence, work time of enterprises ...
      2020-08-04