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Wyszukujesz frazę "Kuznetsov, I." wg kryterium: Autor

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    Wyświetlanie 1-10 z 10
    Tytuł:
    The Revised Method for Calculating of The Optimal Train Control Mode
    Autorzy:
    Zhelieznov, Konstantun I.
    Akulov, Artem S.
    Zabolotniy, Oleksandr M.
    Ursulyak, Lyudmila V.
    Chabanuk, Evgenij V.
    Shvets, Angela O.
    Kuznetsov, Valeriy G.
    Radkevych, Anatolii V.
    Powiązania:
    https://bibliotekanauki.pl/articles/224041.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conducting a train
    running profile of the train
    optimal control
    driving simulators
    electric traction motors
    prowadzenia pociągu
    profil jazdy pociągu
    optymalna kontrola
    symulator jazdy
    silnik trakcyjny
    Opis:
    Development of a method for calculating the optimal mode of conducting a train in terms of energy saving meet the safety requirements and schedules. The method of calculation must solve the assigned tasks without significant time spent on the calculation. To implement this method of calculation was used a simplified model of the train as a controlled system. The existing mathematical and algorithmic methods for solving isoperimetric problems of finding the optimal solution in the presence of restrictions on resources were the information base for methodology development. Scientific works of domestic and foreign scientists, professional periodicals, materials of scientific and practical conferences, methodical and normative materials, currently in force on Ukrainian Railways. The results of these studies were used to create simulators on the basis of computer technology for the training of locomotive drivers. The scientific novelty of the proposed calculation method consists in applying the simplified calculations of the status of the train as a controlled system, without the use of differential equations of motion that allows to significantly increase the speed of the calculations. This, in turn, will solve the problems of finding optimal control in real time, taking into account changing conditions during the movement of the train. The practical significance of the obtained results is the use of such a calculation method that does not require significant time for its implementation and can be used as a subsystem of the on-board train control system capable of performing calculations taking into account changes in the current train situation.
    Źródło:
    Archives of Transport; 2019, 51, 3; 7-19
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Assessment of Alumina Production Waste Impact on Natural Water
    Autorzy:
    Kuznetsov, V. S.
    Suprun, I. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/123535.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    alumina
    red mud
    utilisation
    sludge dump
    Opis:
    The paper is dedicated to the issue of assessment of alumina (red mud) production waste on natural water. The growth of the number of aluminium-producing facilities leads to the expansion of exclusion areas to store the production waste – sludge dumps. A considerable part of research on red mud utilisation is focused on its use in the iron-and-steel industry. Furthermore, the technologies of red mud usage in the construction industry gain substantial significance for land reclamation, isolation of polluted industrial and agricultural lands as well as the effluent and industrial emissions treatment.
    Źródło:
    Journal of Ecological Engineering; 2018, 19, 2; 154-158
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reduction of an Adverse Impact During Well Drilling by Means of Drilling Waste Usage
    Autorzy:
    Kuznetsov, V. S.
    Suprun, I. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/125400.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    bore mud
    utilisation
    toxicity
    well site
    sludge pit
    dehumidification
    oil production
    refining
    expression
    waste treatment
    Opis:
    The problem of drilling waste utilisation is assumed to be resolved through the implementation of the complex of environment protection measures in production engineering. They include primarily the use in the process of well drilling of drilling mud on the basis of water-soluble biodegradable polymers and a four-stage drilling mud refining system. Secondly, the usage of the well site construction with trenching for allocation of expressed bore mud and a temporary ground tank for drilling waste water.
    Źródło:
    Journal of Ecological Engineering; 2017, 18, 2; 12-15
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improvement of the regenerating energy accounting system on the direct current railways
    Autorzy:
    Kuznetsov, V. G.
    Sablin, O. I.
    Chornaya, A. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/224043.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    energy accounting system
    power consumption
    power supply
    traffic size
    regeneration
    system rozliczeniowy energii
    pobór mocy
    zasilanie
    wielkość ruchu
    regeneracja
    Opis:
    Purpose. Monitoring of current state of quantitative indices of regenerative energy in the suburban movement, the analysis of the factors influencing its volumes and improvement the principles of the train regenerative energy accounting on the basis of it. Relevance. Development of effective measures of increase the regeneration efficiency of the electric power in system of electric traction demands comprehensive completeness of information on quantitative indices of regeneration energy volumes at all possible levels of its analysis, in particular on the corresponding sections of RS movement that will allow to establish the influence on the level of regeneration of various factors, such as parameters of traction power supply and the organization of train service. As the existing system of the regenerative energy accounting does not allow to consider the specified factors, development of the principles for increasing the efficiency of the analysis of volumes of return energy to a contact line during regenerative braking on DC rolling stock is the actual direction of researches. Collective monitoring of regeneration energy volumes by specialists of locomotive service, power supply and traffic operating departments will be essentially new approach to definition of real factors and taking effective decisions for increasing of using of regenerative energy. Scientific novelty. It’s offered to consider the influence on quantitative indices of regenerative energy the parameters of traction power supply and the organization (sizes) of traffic service on sections. Practical importance. Increasing the efficiency of the regeneration energy accounting is an important element in drawing up the balance of energy for electric traction system, development of the effective methods for improvement of the conditions of regeneration in it and in estimation of its power indicators in general.
    Źródło:
    Archives of Transport; 2015, 36, 4; 35-42
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Processes regulating pCO2 in the surface waters of the Central Eastern Gotland Sea: a model study
    Autorzy:
    Kuznetsov, I.
    Neumann, T.
    Schneider, B.
    Yakushev, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/48971.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    biogeochemical modelling
    brackish water
    carbon dioxide
    Cyanoprokaryota
    detritus
    ecological status
    ecosystem
    ERGOM model
    nitrogen fixation
    seasonal change
    surface water
    water exchange
    Opis:
    This work presents a one-dimensional simulation of the seasonal changes in CO2 partial pressure (pCO2). The results of the model were constrained using data from observations, which improved the model’s ability to estimate nitrogen fixation in the central Baltic Sea and allowed the impact of nitrogen fixation on the ecological state of the Baltic Sea to be studied. The model used here is the public domain water-column model GOTM (General Ocean Turbulence Model), which in this study was coupled with a modifed Baltic Sea ecosystem model, ERGOM (The Baltic Sea Research Institute’s ecosystem model). To estimate nitrogen fixation rates in the Gotland Sea, the ERGOM model was modified by including an additional cyanobacteria group able to fix nitrogen from March to June. Furthermore, the model was extended by a simple CO2 cycle. Variable C:P and N:P ratios, controlled by phosphate concentrations in ambient water, were used to represent cyanobacteria, detritus and sediment detritus. This approach improved the model’s ability to reproduce sea-surface phosphate and pCO2 dynamics. The resulting nitrogen fixation rates in 2005 for the two simulations, with and without the additional cyanobacteria group, were 259 and 278 mmol N m−2 year−1 respectively.
    Źródło:
    Oceanologia; 2011, 53, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charge Transport and Magnetism in $Eu_{1-x}Ca_{x}B_6$
    Autorzy:
    Glushkov, V.
    Anisimov, M.
    Batko, I.
    Batkova, M.
    Bogach, A.
    Demishev, S.
    Filipov, V.
    Flachbart, K.
    Kuznetsov, A.
    Sannikov, I.
    Shitsevalova, N.
    Sluchanko, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1534292.pdf
    Data publikacji:
    2010-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.30.+h
    75.30.Cr
    75.40.-s
    75.47.Gk
    Opis:
    Transport, magnetic and thermal properties of substitutional solid solution $Eu_{1 - x}Ca_{x}B_6$ single crystals (0 ≤ x ≤ 0.244) have been studied at 1.8 ≤ T ≤ 300 K and in magnetic fields up to 8 T. Calcium doping is shown to result in a metal-insulator transition, which occurs at x_{MIT} ≈ 0.2. In vicinity of metal-insulator transition the effect of colossal magnetoresistance is found to be very sensitive to Ca content, the amplitude varying from Δ = [ ρ (0)- ρ (8T)]/ρ(8T) ≈1.4 × $10^2$ to Δ ≈ 7.5 × $10^3$ for 0.14 ≤ x ≤ 0.16. The analysis of magnetic contribution to heat capacity shows that a large amount of magnetic entropy ( ≈ 30%) releases in $Eu_{0.845}Ca_{0.155}B_6$ when moving from the Curie temperature $T_{C}$ ≈ 5.5 K to the characteristic one T* ≈ 30 K. This observation as well as the large amplitude of low field colossal magnetoresistance effect and the deviation of magnetic susceptibility from the Curie-Weiss law detected for x = 0.155 compound in the interval $T_{C}$ ≤ T ≤ T* seem to be associated with magnetic phase separation induced by Ca doping.
    Źródło:
    Acta Physica Polonica A; 2010, 118, 5; 891-892
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of Polyolefine Based Composites Nanostructure Parameters by Very Cold Neutrons Scattering
    Autorzy:
    Kuznetsov, S.
    Dubnikova, I.
    Litvin, V.
    Meshkov, I.
    Shelagin, A.
    Udovenko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1537817.pdf
    Data publikacji:
    2010-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.05.fm
    61.48.De
    82.35.Np
    Opis:
    Very cold neutrons (VCN) scattering method was used to study the morphology of polyolefine based nanocomposites. The nanocomposites were prepared by the melt mixing method. The special surface active additions and the fillers surface modification were used to improve the polymer-filler compatibility. The multiwalled carbon nanotubes (MWCNT), the calcium carbonate (CC) submicron particles and the layered natural mineral montmorillonite (MMT) nanoparticles were used as the fillers. The fractal structural model was used to describe the VCN scattering on the nanofillers agglomerates. It was shown by VCN scattering that the volume part of isolated MWCNTs in polypropylene (PP) based composites decreases with the increase of the filler loading, the density of MWCNT packing in agglomerates increases with the total volume nanotube concentration and decreases with the nanotube surface modification. It was revealed that the isolated CC particles are dominated in the CC/PP samples with low CC (5 vol.%) loading. It was shown that practically full MMT exfoliation within polyethylene (PE) matrix can be achieved by both polymerization exfoliation method and by melt mixing compounding with using special polar polymer additions.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 5; 727-732
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of anti-ricochet properties of body armor with steel armor panels
    Autorzy:
    Egorov, A.I.
    Kuznetsov, V.M.
    Logatkin, S.M.
    Khromushin, V.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/237959.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Technologii Bezpieczeństwa Moratex
    Tematy:
    kamizelka kuloodporna
    pancerz ze stali
    odporność balistyczna
    bullet-proof vest
    stainless steel armor
    ballistic resistance
    Opis:
    The paper describes the ballistic experiment on counter-ricochet structures of armor vests with steel panels of protection levels 2, 3 and 5. A method of experimental evaluation of ballistic characteristics of such counter-ricochet structures was developed with substantiation of the target conditions. As a result of experimental ballistic and medical/biological research the parameters of witness plates were determined and justified. In the experimental research ballistic resistance of commercially-available vest counter-ricochet structures was investigated by methods of energy consumption and V50 evaluation. Special technical requirements were worked-out for counter-ricochet structures of bulletproof vests with steel panels.
    Źródło:
    Techniczne Wyroby Włókiennicze; 2009, R. 17, nr 2/3, 2/3; 63-66
    1230-7491
    Pojawia się w:
    Techniczne Wyroby Włókiennicze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    THz Spectroscopy of Extremely Shallow Acceptors States in Ge/GeSi Multiple-Quantum-Well Heterostructures
    Autorzy:
    Aleshkin, V. Ya.
    Erofeeva, Y. V.
    Gavrilenko, V. I.
    Ikonnikov, A. V.
    Kozlov, D. V.
    Kuznetsov, O. A.
    Veksler, D. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2041651.pdf
    Data publikacji:
    2005-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.55.Cn
    76.90.+d
    78.67.De
    Opis:
    New shallow acceptor magnetoabsorption lines in THz range have been discovered under bandgap photoexcitation in strained Ge/GeSi multiple-quantum-well heterostructures. It is shown, both theoretically and experimentally, that the resonant absorption results from the photoionization of A$\text{}^{+}$-centers and from 1s → 2p$\text{}_{+}$-type transitions from the ground state of the barrier-situated A$\text{}^{0}$-centers into excited states in the 1st and 2nd electronic subbands. The shallowest discovered ground acceptor states (E$\text{}_{B}$≤0.5 meV) are attributed to the "barrier-spaced" acceptors (a hole bound with an acceptor ion in the neighboring Ge quantum well).
    Źródło:
    Acta Physica Polonica A; 2005, 107, 1; 137-141
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Free Exciton Luminescence in ZnCdSe Solid Solutions, ZnSe Epitaxial Films and ZnSe$\text{}_{1-x}$S$\text{}_{x}$/ZnSe$\text{}_{1-y}$S$\text{}_{y}$ Superlattices
    Autorzy:
    Tenishev, L. N.
    Permogorov, S. A.
    Fedorov, D. L.
    Yakushcheva, G. G.
    Kuznetsov, P. I
    Powiązania:
    https://bibliotekanauki.pl/articles/1952205.pdf
    Data publikacji:
    1996-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.Ci
    Opis:
    We studied the luminescence of bulk Zn$\text{}_{1-x}$Cd$\text{}_{x}$Se solid solutions, epitaxial ZnSe films and ZnSe$\text{}_{1-x}$S$\text{}_{x}$/ZnSe$\text{}_{1-y}$S$\text{}_{y}$ superlattices at T=2-80 K. The analysis of the bands of exciton radiative annihilation with simultaneous emission of 1 or 2 LO phonons shows that the excitons in the studied samples can be considered as free particles with thermalized distribution of kinetic energies. In ZnSe$\text{}_{1-x}$S$\text{}_{x}$/ZnSe$\text{}_{1-y}$S$\text{}_{y}$ superlattices a three-dimensional character of exciton motion was established. The periodic potential of superlattice perturbs the exciton wave vector and induces additional elastic scattering of excitons.
    Źródło:
    Acta Physica Polonica A; 1996, 90, 5; 959-964
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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