Now showing items 300-319 of 7830

    • Rationale for the Choice of the Ellipsoidal Reflector Parameters for Biomedical Photometers 

      Bezuglaya, N.; Haponiuk, A.; Bondariev, D.; Poluectov, S.; Chornyi, V.; Bezuglyi, M. (БНТУ, 2021)
      Biomedical photometersʼ information-measuring systems with ellipsoidal reflectors have acceptable results in determining of biological tissues optical properties in the visible and near-infrared spectral range. These photometers make it possible to study the optical radiation propagation in turbid media for direct and inverse problems of light-scattering optics. The purpose of ...
      2021-12-21
    • Recycling of Materials for Pavement Dressing: Analytical Review 

      Tingguo, Liu; Zankavich, V. N.; Aliakseyeu, Yu. H.; Khroustalev, B. M. (БНТУ, 2019)
      The paper presents an analytical review of materials recycling for pavement dressing. Recycling or repeated usage of pavement dressing materials while making reconstruction and repair of road pavements is not considered as a new conception and it has been realized in various countries of the world since 20th century. Recycling (hot, cold) is based on methods of its execution, ...
      2019-04-16
    • Reference Input Signals Formation for Induction Motor Control in Traction Drive 

      Opeiko, O. F. (БНТУ, 2023)
      The purpose of this work is to build the analytical improved (with resistances estimation) real time computation of the reference inputs for rotor flux and torque in the vector control system of an induction motor of a traction electric drive. The reference inputs must maximize electromagnetic torque in conditions of voltage source instability, particularly in magnetic field ...
      2023-06-08
    • Refractive index determination for a plane dielectric layer using the measurements of transmitted beam intensity 

      Serdyuk, V. M.; Titovitsky, J. A. (БНТУ, 2017)
      The aim of the present work is the theoretical justification of new refractive index determination technique for a homogeneous transparent plane dielectric layer. It uses intensity measurements for two polarizations of transmitting electromagnetic beam and does not take into consideration phase relationships and phase parameters of testing field at unknown thickness of a layer. ...
      2017-03-02
    • Reinforced Concrete under the Action of Carbonization and Chloride Aggression: a Probabilistic Model for Service Life Prediction 

      Leonovich, S. N.; Shalyi, E. E.; Kim, L. V. (БНТУ, 2019)
      Reinforcement corrosion of marine and coastal hydraulic structures due to chloride aggression and concrete carbonization leads to a sharp decrease in structure safety. The reinforcement is subjected to a depassivation process as soon as a chloride concentration on its surface exceeds a certain threshold concentration, or the pH value in a concrete protective layer is decreased ...
      2019-08-12
    • Research of Digital Camera Dynamic Range on the Imaging Processing Basis 

      Sutkowski, M.; Saukova, Ya. (БНТУ, 2017)
      Digital images provide to determine photometric and colorimetric properties of objects subject to validation all elements of a measuring channel (digital camera, software, display) and solve the problem of their limited dynamic ranges. The aim of the study was to explore the dynamic range of a digital camera for use in photometric and colorimetric measurements. The Laboratory of ...
      2017-09-04
    • Research of Regenerative Braking Strategy for Electric Vehicles 

      Le, Van Nghia; Dam, Hoang Phuc; Nguyen, Trong Hoan; Kharitonchik, S. V.; Kusyak, V. A. (БНТУ, 2023)
      In the context of global energy instability caused by the transformation of global demand for energy and energy resources, one of the most important areas in the automotive industry is the development of electric vehicles. Serial production of high-tech electric vehicles with a long range contributes to the stabilization of the energy market and the sustainable development of the ...
      2023-04-22
    • Research of Surface Wear Resistance of Aluminum Alloy Modified with Minerals using Sclerometry Method 

      Skazochkin, A. V.; Bondarenko, G. G.; Zukowski, P. (БНТУ, 2019)
      Improving the wear resistance of the surface of metal parts used in various industries is one of the relevant areas of materials science. The aim of this work was a comparative study of the wear resistance of a sample of an aluminum alloy (EN AW-2024, an aluminum alloy of the Al-Cu-Mg system) modified with ultrafine particles of minerals using the sclerometry method, which makes ...
      2019-09-16
    • Research of ultrasonic sensing and mixing elements for control of magnetorheological fluids stability 

      Dragasius, E.; Jurenas, V.; Maciukiene, V.; Mazeika, D. (БНТУ, 2011)
      Using of magnetorheological fluids (MRF) can reduce energy costs and weight and increase the devices speed and lifetime. In order to fully use all the qualities of MRF properties one must from time to time mix them and measure their properties. These systems are still being designed and tested in the laboratories. There are many structures with rheological fluid, but in many ...
      2012-03-27
    • Results of Many Years’ Measurements Conducted at the Czech State Long Distances Measuring Standard Koštice 

      Kosarev, N. S.; Lechner, J.; Padve, V. A.; Umnov, I. A. (БНТУ, 2023)
      Currently, electronic total stations based on the principles of laser long-range distance measurement are used for collecting geospatial information. As time goes, in the process of using the electronic total stations, their technical parameters vary, necessitating periodic calibration of the instruments. Calibration of the long-range distance measurement laser component of the ...
      2023-02-08
    • Robust Design of Suspension System with Polynomial Chaos Expansion and Machine Learning 

      Gao, H.; Jezequel, L.; Cabrol, E.; Vitry, B. (БНТУ, 2020)
      During the early development of a new vehicle project, the uncertainty of parameters should be taken into consideration because the design may be perturbed due to real components’ complexity and manufacturing tolerances. Thus, the numerical validation of critical suspension specifications, such as durability and ride comfort should be carried out with random factors. In this ...
      2020-02-04
    • Segregation of solute elements in crucible during die casting 

      Кеun, Yong Sohn; Kang, Min Cheol; Kyung, Hyun Kim (БНТУ, 2005)
      Кеun, Yong Sohn. Segregation of solute elements in crucible during die casting / Yong Sohn Кеun // Литье и металлургия. - 2005. – № 3 (35). - С. 58 - 61.
      2016-04-13
    • Series of Photovoltaic Converters Based on Semiconductors with Intrinsic Photoconductivity 

      Vorobey, R. I.; Gusev, O. K.; Zharin, A. L.; Pantsialeyeu, K. U.; Svistun, A. I.; Tyavlovsky, A. K.; Tyavlovsky, K. L.; Shadurskaya, L. I. (БНТУ, 2021)
      One of the ways to solve multiple problems of optical diagnostics is to use photovoltaic converters based on semiconductors with intrinsic photoconductivity slightly doped with deep impurities which form several energy levels with different charge states within the semiconductor′s bandgap. Peculiarities of physical processes of recharging these levels make it possible to construct ...
      2021-07-07
    • Shape and Measurement Monitoring of Inrush Current Characteristics of a Battery-Capacitive Energy Storage Device with Two-Channel Digital Oscilloscope 

      Vasilevich, V. P.; Zbyshinskaya, M. Y. (БНТУ, 2021)
      The main reason of voltage instability in stand-alone power supply systems is the electric drive motors inrush current, which are usually higher than their nominal value. The most reasonable way to solve this problem is using capacitive energy storage. The purpose of research is shape and measurement monitoring of battery-capacitive energy storage device inrush current characteristics. ...
      2021-12-22
    • Signal Pre-Selection for Monitoring and Prediction of Vehicle Powertrain Component Aging 

      Udo Sass, A.; Esatbeyoglu, E.; Iwwerks, T. (БНТУ, 2019)
      Predictive maintenance has become important for avoiding unplanned downtime of modern vehicles. With increasing functionality the exchanged data between Electronic Control Units (ECU) grows simultaneously rapidly. A large number of in-vehicle signals are provided for monitoring an aging process. Various components of a vehicle age due to their usage. This component aging is only ...
      2019-12-06
    • Simplified method of calorimetric measurements of background loss in crystals 

      Savitski, V. G.; Kemp, A. (БНТУ, 2012)
      We report on the measurements of absorption coefficient of the synthetic diamond crystal using an adapted form of laser calorimetry technique at wavelengths of 1064, 640, 532, 452 and 364 nm. The absorption coefficient was found to increase exponentially from 0,03 cm-1 at 1064 nm to 0,7 cm-1 at 364 nm.
      2013-02-14
    • Simulation Model for Drivability Assessment and Optimization of Hybrid Drive Trains 

      Domijanic, M.; Hirz, M. (БНТУ, 2021)
      The growing electrification of vehicle drive trains is increasing their complexity significantly. The interactions between the different drive train components should not be noticed negatively by the occupants, which is considered as good drivability and thus contributes to increasing customer acceptance. Today’s development processes of hybrid- and electric driven cars consider ...
      2021-02-04
    • Simulation of cathode surface sputtering by ions and fast atoms in Townsend discharge in argon-mercury mixture with temperature-dependent composition 

      Bondarenko, G. G.; Kristya, V. I.; Savichkin, D. O.; Żukowski, P. V. (БНТУ, 2018)
      The mixture of argon and mercury vapor is used as the background gas in different types of gas discharge illuminating lamps. The aim of this work was development of a model, describing transport of electrons, ions and fast atoms in the one-dimensional low-current gas discharge in argon-mercury mixture, and determination of the dependence of their contributions to the cathode ...
      2018-09-18
    • Simulation of direct mapped, k-way and fully associative cache on all pairs shortest paths algorithms 

      Prihozhy, A. A. (БНТУ, 2019)
      Caches are intermediate level between fast CPU and slow main memory. It aims to store copies of frequently used data and to reduce the access time to the main memory. Caches are capable of exploiting temporal and spatial localities during program execution. When the processor accesses memory, the cache behavior depends on if the data is in cache: a cache hit occurs if it is, and, ...
      2020-01-09
    • Simulation of Photovoltaic Thermoelectric Battery Characteristics 

      Esman, A. K.; Zykov, G. L.; Potachits, V. A.; Kuleshov, V. K. (БНТУ, 2021)
      Solar radiation is an environmentally friendly and affordable energy source with high release of energy. The use of a photovoltaic thermoelectric battery makes it possible to increase the efficiency of converting solar and thermal radiation into electrical energy, both on serene and cloudy days. An original battery structure with photovoltaic and thermoelectric converters is ...
      2021-06-23