Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Petrov, V." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-14 z 14
    Tytuł:
    The market model of CDO spreads
    Autorzy:
    Gątarek, D.
    Petrov, V.
    Stavrou, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/206047.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    CDO pricing
    Marshall-Olkin copula
    bottom-up approach
    Opis:
    In this paper we present a new arbitrage-free bottomup model of correlated defaults, based on a special approach to systematic and idiosyncratic risks for individual obligors. The model admits several attractive features, like consistency with currency and interest rate models, as well as numerical tractability and flexibility, making it capable to fit the market for practically all self consistent CDO tranche prices. Its background is rather remote from other approaches, like copulas and point processes, so our presentation is detailed.
    Źródło:
    Control and Cybernetics; 2015, 44, 1; 149-162
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photosynthetic performance of young maize (Zea mays L.) plants exposed to chilling stress can be improved by the application of protein hydrolysates
    Wpływ hydrolizatów białkowych na wydajność fotosyntetyczną młodych roślin kukurydzy (Zea mays L.) poddanych stresowi chłodu
    Autorzy:
    Cholakova-Bimbalova, R.
    Petrov, V.
    Vassilev, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/27199.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    Biostimulants offer a novel approach for the regulation of crucial physiological processes in plants. Recently, it has been observed that the application of biostimulants on both seeds and plants may ameliorate to some extent the negative effects of abiotic stresses such as drought, heat, salinity, and others. In the climate conditions of Bulgaria, the early developmental stages of warm climate crops, like maize, often occur under suboptimal temperatures. Although the mitigation of abiotic stress is perhaps the most frequently cited benefit of biostimulant formulations, little is known about their influence on chilling-stressed plants. The aim of our study was to evaluate the effects of a biostimulant from the group of protein hydrolysates on both the growth and the photosynthetic performance of chilling-exposed young maize plants grown in controlled environment. Here, we report that application of a protein hydrolysate increased the performance of chilled maize plants, as demonstrated by leaf gas exchange, photosynthetic pigment content, and chlorophyll fluorescence, but did not affect their growth. Nevertheless, based on the better preserved photosynthetic performance of the biostimulant-treated maize plants exposed to chilling, we assume that under subsequent favorable conditions their growth would recover more quickly as compared to the untreated ones.
    Zastosowanie biostymulantów jest nowatorskim sposobem regulacji procesów fizjologicznych w roślinach. W ostatnich latach dowiedziono również, że ich aplikacja, zarówno na nasiona jak i części wegetatywne może w pewnym zakresie niwelować negatywne skutki stresów abiotycznych, między innymi suszy, zasolenia czy zbyt wysokiej temperatury. W warunkach klimatycznych Bułgarii wczesne fazy rozwoju roślin uprawnych pochodzących z cieplejszych stref klimatycznych, na przykład kukurydzy, odbywają się w okresach panowania temperatur suboptymalnych. Mimo, że łagodzenie negatywnych skutków stresu jest jednym z najczęściej podawanych korzystnych efektów działania biostymulantów, wiedza na temat ich wpływu na rośliny poddane stresowi chłodu jest wciąż niewystarczająca. Celem badań była ocena działania biostymulantów z grupy hydroli- zatów białkowych na wzrost i przebieg procesu fotosyntezy kukurydzy uprawianej w warunkach obniżonej temperatury. Aplikacja hydrolizatów białkowych miała pozytywny wpływ na wymianę gazową, zawartość barwników fotosyntetycznych i sprawność aparatu fotosyntetycznego mierzoną parametrami fluorescencji chlorofilu a, ale nie wpłynęła na wzrost roślin. Na podstawie uzyska -nych wyników można przypuszczać, że ze względu na sprawniejszy przebieg procesu fotosyntezy, rośliny kukurydzy poddane działaniu zbyt niskiej temperatury we wczesnych etapach rozwoju i potraktowane biostymulantami będą rosły lepiej po ustąpieniu suboptymalnych temperatur w porównaniu z roślinami nie poddanymi działaniu biostymulantów.
    Źródło:
    Acta Agrobotanica; 2019, 72, 2
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calorimetric studies of the energy deposition on a material surface by plasma jets generated with QSPA and MPC devices
    Autorzy:
    Chuvilo, A. A.
    Garkusha, I. E.
    Makhlaj, V. A.
    Petrov, Y. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/147706.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    quasi steady-state plasma accelerator (QSPA)
    energy density
    heat load
    plasma streams
    plasma-surface interaction
    Opis:
    Studies of the energy deposition by plasma jets incident on a material surface are of topical interest for both the fusion and plasma technology applications. In this paper the results are reported of a comparative study of plasma energy deposition on different material surfaces exposed to plasma jets of various duration and energy density, generated using the QSPA Kh-50 and the MPC devices. The spatial distribution of plasma energy density and the heat load on the surface were measured with a movable calorimeter. The measurements demonstrate that in the case of an exposure to QSPA plasma jets the absorbed heat load is approximately equal to 55-60% of the energy in the incident plasma jet. In the case of plasma jets generated using the MPC device the heat load on the target surface and was practically the same as for the QSPA jets, and additional shielding effects were found to be negligible due to the short duration of plasma jets.
    Źródło:
    Nukleonika; 2012, 57, 1; 49-53
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dense plasma source development and jet injection in Globus-M*
    Autorzy:
    Voronin, , V. A.
    Gusev, V. K.
    Petrov, Y. V.
    Mukhin, E. E.
    Tolstyakov, S. Y.
    Kurskiev, G. S.
    Kochergin, M. M.
    Hellblom, K. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/147768.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma gun
    spherical tokamak
    fuelling system
    Opis:
    Progress in the development of a plasma jet source and its utilization for injection of hydrogen plasma and neutral gas jets into the Globus-M spherical tokamak are presented. The latest version of the high kinetic energy gas and plasma jet source with titanium hydride grains is described. Reproducibility of the gas jet generation was increased due to automatic loading of fresh grains into the source before every shot. It allows producing stable gas release for many discharges. Impurity radiation intensity from the plasma jet was decreased by more than 100 times by preliminary processing titanium hydrate grains and developing a new filter. The result of special experiments on two colliding jets is discussed. It was confirmed that the plasma jet recombines into a gas jet after it escapes the source edge and has a kinetic energy higher than the hydrogen ionization potential. Hydrogen plasma jet with low impurity content has a density up to 2 × 1022 m-3, a total number of accelerated particles (1-5) × 1019 and a flow velocity of ~ 200 km/s. It was used as an instrument for density control in Globus-M. Jet injection into deuterium plasma core during current plateau phase led to fast density increase in all spatial points of the plasma column including the plasma central region. Such injection allowed density doubling in the tokamak plasma. The model predictions are consistent with the experimental observations of the density raise recorded by the interferometer and Thomson scattering.
    Źródło:
    Nukleonika; 2008, 53, 3; 103-109
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of discrete recognition and information vulnerability search procedures
    Modelirovaniye diskretnykh protsedur raspoznavaniya ugroz i poiska uyazvimostey informatsii
    Autorzy:
    Lahno, V.
    Petrov, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/792978.pdf
    Data publikacji:
    2011
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11A
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Models, Methods and Information Technologies of Protection of Corporate Systems of Transport Based on Intellectual Identification of Threats
    Autorzy:
    Petrov, A.
    Lakhno, V.
    Korchenko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/375969.pdf
    Data publikacji:
    2015
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    systems of transportation and communication
    information security
    cyber security
    threat detection
    mathematical models
    fuzzy logic
    Opis:
    In the article, results of the research on the development of methods and models of intellectual recognition of threats to information systems of transport. The article contains results of the research that allows us to raise the level of protection of the automated and intellectual information systems of the transportation enterprises (AISTE) in the conditions of the intensification of transportation. The article contains mathematical models and results of estimation information systems having Internet connection through various communication channels. The article also considers the issues of research and protection of the AISTE under the condition of several conflict-data-request threads.
    Źródło:
    Decision Making in Manufacturing and Services; 2015, 9, 2; 117-136
    1896-8325
    2300-7087
    Pojawia się w:
    Decision Making in Manufacturing and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessing the Environmental Condition of Minor Rivers in Urban Areas
    Autorzy:
    Kuznetsov, V. S.
    Petrov, D.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/124132.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    sediment pollution
    minor rivers
    oil product pollution
    environmental monitoring
    heavy metal pollution
    Opis:
    This article is devoted to the study of water and sediment pollution in the channel of the Neva delta. Spectrophotometry was used to determine the concentration of pollutants in water. In the chemical analysis of the precipitate, atomic absorption spectroscopy and infrared spectroscopy were used. Analysis of the hydrochemical composition and sediment of the Smolenka River showed high concentrations of heavy metals and petroleum products. At the same time, the hydrochemical composition of the Smolenka River is highly unstable, but the concentration of oil products and lead in the sediments indicates the presence of local pollution sources. Based on our findings, we are guided by the restoration of the aquatic environment.
    Źródło:
    Journal of Ecological Engineering; 2017, 18, 6; 110-114
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modification of the Spontaneous Emission of Dye Molecules in Photonic Crystals
    Autorzy:
    Petrov, E.
    Bogomolov, V.
    Kalosha, I.
    Gaponenko, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1992744.pdf
    Data publikacji:
    1998-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.50.-p
    Opis:
    Modification of the spontaneous emission of dye molecules embedded in artificial opals exhibiting stop bands in the visible range is observed. Molecules embedded in artificial opals show dips in spontaneous emission spectra and modified fluorescence decay kinetics. Results are interpreted in terms of redistribution of the photon density of states. Effects of the multiple reabsorption and reemission of fluorescence photons and interaction of dye molecules with the silica surface are discussed.
    Źródło:
    Acta Physica Polonica A; 1998, 94, 5-6; 761-771
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of Waste Properties of Subway Construction as a Potential Component of Soil Layer
    Autorzy:
    Ivanov, A. V.
    Smirnov, Y. D.
    Petrov, G. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/124091.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    subway
    waste
    soil
    landfill
    mine site
    hazard class
    total carbon
    moisture
    biotesting
    Chlorella algae
    Opis:
    The construction of subway stations is inevitably accompanied by the formation of a large amount of waste that is extracted from the underground workings by rock. When the waste is transported, the air is polluted with the exhaust gases of the dump trucks, some of the waste can stay on the road surface, the use of dump trucks increases the load on the roadway, the disposal of waste at landfills harms the environment, and enterprises pay fees for the transportation as well as placement of the waste. The article deals with the waste from the construction of new stations in the Saint-Petersburg subway. In order to determine the possibility of using waste in the municipal economy, a comprehensive analysis of this waste was carried out, including determination of moisture content, acidity, total carbon content, as well as chemical and granulometric composition. On the basis of the study results, it was established that the waste in question belongs to the hazard class 5, which enables to use it as a component of the soil mixture. Afterwards, the hazard class 5 was confirmed by the method of bioassay based on the determination of water toxicity by changing the optical density of the Chlorella algae culture.
    Źródło:
    Journal of Ecological Engineering; 2018, 19, 5; 59-69
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Validity and timing in decision support systems
    Autorzy:
    Petrov, O.
    Horoshko, V.
    Aleksander, M.
    Basiura, B.
    Hokhlacheva, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/314686.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    decision support systems
    validity
    timing
    process
    Opis:
    Based on the principle of synthesizing the matrix of transitional probabilities, processes of decision-making support by means of the truncated procedures of type (k/n)n (k≤n) are considered. Obtained expressions for calculating the time-efficiency of the processes of decision support using procedures type (k/4)4 are shown. There are given calculated by the expressions obtained data time efficiency, which will enable a quantitative comparison between different procedures and select the best of them on the basis of specific practical tasks.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 12; 1116-1122
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High kinetic energy dense plasma jet
    Autorzy:
    Voronin, A.
    Gusev, V.
    Petrov, Y.
    Sakharov, N.
    Abramova, K.
    Hellblom, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/147488.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma gun
    spherical tokamak
    fuelling system
    Opis:
    Researches on the plasma jet source and injection of hydrogen plasma and neutral gas jets into the Globus-M spherical tokamak are presented. A novel source of dense plasma with high directed velocity is designed, constructed and investigated. This is a double stage system consisting of an intense source utilizing titanium-hydride grains for neutral gas production and a conventional pulsed coaxial accelerator. Optimization of the accelerator parameters, so as to achieve a maximum possible flow velocity with a limited discharge current and a reasonable length of the coaxial electrodes is performed. The calculations are compared with the experiment. A test bed is used for investigation of the intense plasma jet generated by a plasma gun. Plasma jet parameters, among them pressure distribution across the jet, flow velocity, plasma density etc., were measured. Plasma jets with densities of up to 1022 m 3, total numbers of accelerated particles (1 5) . 1019, and flow velocities of 50 100 km/s were successfully injected into the plasma column of the Globus-M tokamak. Interferometric and Thomson scattering measurements confirmed a deep jet penetration and a fast density rise (<0.5 ms) at all spatial points up to the radius r H 0.3a. The injection did not result in plasma degradation.
    Źródło:
    Nukleonika; 2006, 51, 1; 85-92
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    (Nano) technology for managing plant organisms with the help of targeted impact using the signals of the physical nature
    Autorzy:
    Karpachev, V.V.
    Voropaeva, N.L.
    Belonozhkina, T.G.
    Naumov, E.V.
    Vasilev, M.M.
    Petrov, O.F.
    Figovsky, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/10815.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    One of the major problems of agricultural production has been to improve the sowing qualities of seeds to increase yields of various crops. In this regard, of particular interest is the control technology of vegetable organisms by "address the impact of" signals of the physical nature. Plasma treatment of seeds influences the growth and development of the amaranth. The effectiveness of treatment depends on the exposure time of the exposure. The largest positive treatment effect of the plasma on the growth, development and yield of amaranth has been observed when the exposure 60 seconds, leading to increased yields.
    Źródło:
    International Letters of Natural Sciences; 2015, 05
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy Spectrum in Quantum Dots of Lead and Tin Chalcogenides Semiconducting Compounds
    Autorzy:
    Dugaev, V. K.
    Litvinov, V. I.
    Petrov, P. P.
    Mironov, O. A.
    Nashchekina, O. N.
    Oszwałdowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1923782.pdf
    Data publikacji:
    1992-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    71.50.+t
    71.90.+q
    Opis:
    The energy spectrum of a quantum dot made from IV-VI narrow gap semiconductors is studied. The calculations of the energy levels as functions of the dot radius are performed. When the anisotropy of the bare energy spectrum is strong, the energy levels are calculated using Fal'kovskii's adiabatic approximation for multiband systems. When the quantum dot material has an inverted band gap with respect to the host, the low-energy states within the fundamental gap are shown to arise.
    Źródło:
    Acta Physica Polonica A; 1992, 82, 5; 797-800
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Population Loss in Closed Optical Transitions οf Rb and Cs Atoms Confined in Micrometric Thin Cells
    Autorzy:
    Biancalana, V.
    Cartaleva, S.
    Dancheva, Y.
    Gosh, P.
    Mariotti, E.
    Mitra, S.
    Moi, L.
    Petrov, N.
    Ray, B.
    Sarkisyan, D.
    Slavov, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1791199.pdf
    Data publikacji:
    2009-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.30.-r
    32.70.Jz
    Opis:
    We present the first experimental observation of narrow dips in the fluorescence profiles of completely closed hyperfine transitions in Rb vapor at high atomic density, which is attributed to the depolarization of the excited state. Moreover, at low atomic density, a narrow peak on the top of the fluorescence profile is demonstrated, centered at the completely closed transition within the $D_{2}$ line of Cs. Experiments are performed in thin (700 μm) alkali cell by single light beam spectroscopy. The cell is filled with Cs containing a small portion of Rb.
    Źródło:
    Acta Physica Polonica A; 2009, 116, 4; 495-497
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies