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Wyszukujesz frazę "Andrzej, Malinowski," wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Real-time hierarchical predictive risk assessment at the national level: Mutually agreed predicted service disruption profiles
    Autorzy:
    Malinowski, Krzysztof
    Karbowski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/330654.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    risk assessment
    cyber security
    hierarchical approach
    service disruption profile
    coordination mechanism
    szacowanie ryzyka
    bezpieczeństwo cyfrowe
    podejście hierarchiczne
    Opis:
    We present a real-time hierarchical approach to an on-line risk assessment at the national level taking into account both local risk analyses performed by key service operators and relevant interdependencies between those services. For this purpose we define mutually agreed predicted service disruption profiles and then propose a coordination mechanism to align those profiles. A simple, four-entity example is provided to illustrate the coordination.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2020, 30, 3; 597-609
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of the average and local boundary condition of heat transfer during cooling with a water spray under surface boiling
    Autorzy:
    Jasiewicz, Elżbieta
    Hadała, Beata
    Malinowski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/29520235.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    water spray cooling
    heat transfer coefficient
    heat flux
    inverse problem
    heat conduction equation
    Opis:
    The study determined the local and average heat transfer coefficient and the heat flux on the surface of a cylinder cooled with a water nozzle. The inverse method was used to identify the heat transfer coefficient. An objective function was defined to determine the distance between the measured and calculated temperatures. Two models describing the heat transfer coefficient on the cooled surface were considered. The first model described changes in the heat transfer coefficient as a function of the sample radius and cooling time, and the second one assumed the dependence of the heat transfer coefficient solely on time. Numerical simulations showed significant differences in the determined heat transfer coefficients depending on the adopted model of the boundary condition. The performed tests included experimental temperature measurements at selected points of the sensor, numerical simulations of temperature changes, and the inverse solution.
    Źródło:
    Computer Methods in Materials Science; 2020, 20, 4; 147-155
    2720-4081
    2720-3948
    Pojawia się w:
    Computer Methods in Materials Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Critical Infrastructure Risk Assessment Using Markov Chain Model
    Autorzy:
    Karbowski, Andrzej
    Malinowski, Krzysztof
    Szwaczyk, Sebastian
    Jaskóła, Przemysław
    Powiązania:
    https://bibliotekanauki.pl/articles/307936.pdf
    Data publikacji:
    2019
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    cybersecurity
    Markov chains
    networks
    NIS Directive
    simulation
    Opis:
    The paper presents application of the Markov chain model to assess the risk affecting critical national infrastructure. A method for relating different service states to transition probabilities is shown. Then, a real-life example is thoroughly analyzed. Finally, results of a numerical test concerning this problem are provided.
    Źródło:
    Journal of Telecommunications and Information Technology; 2019, 2; 15-22
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inverse Solution to the Vertical Plate Cooling by Radiation and Convection in Air
    Autorzy:
    Hadała, Beata
    Malinowski, Zbigniew
    Gołdasz, Andrzej
    Cebo-Rudnicka, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/2134090.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    convection heat transfer
    radiation heat transfer
    plate emissivity
    vertical plate
    Opis:
    The inverse solution to the heat flux identification during the vertical plate cooling in air has been presented. The developed solution allowed to separate the energy absorbed by the chamber due to radiation from the convection heat losses to air. The uncertainty tests were carried out and the accuracy of the solution has been estimated at a level of 1%-5% depending on the boundary condition model. The inverse solution was obtained for the temperature measurements in the vertical plate. The stainless-steel plate was heated to 950°C and then cooled in the chamber in air only to about 30°C. The identified heat transfer coefficient was compared with the Churchill and Chu model. The solution has allowed to separate the radiation heat losses and to determine the Nusselt number values that stay in good agreement with the Churchill and Chu model for a nearly steady-state air flow for the plate temperature below 100°C.
    Źródło:
    Archives of Metallurgy and Materials; 2022, 67, 3; 1167--1178
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement Capabilities Upgrade of GEM Soft X-ray Measurement System for Hot Plasma Diagnostics
    Autorzy:
    Linczuk, Pawel
    Wojenski, Andrzej
    Kolasinski, Piotr
    Krawczyk, Rafal
    Zabolotny, Wojciech
    Pozniak, Krzysztof
    Chernyshova, Maryna
    Czarski, Tomasz
    Gaska, Michal
    Kasprowicz, Grzegorz
    Malinowski, Karol
    Powiązania:
    https://bibliotekanauki.pl/articles/1844588.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    measurement system
    GEM
    DAQ
    Opis:
    The paper presents improvements of the developed system for hot plasma radiation measurement in the soft Xray range based on a Gas Electron Multiplier (GEM) detector. Scope of work consists of a new solution for handling hardware time-synchronization with tokamak systems needed for better synchronization with other diagnostics and measurement quality. The paper describes the support of new modes of triggering on PC-side. There are communication and data path overview in the system. The new API is described, which provide separate channels for data and control and is more robust than the earlier solution. Work concentrates on stability and usability improvements of the implemented device providing better usage for end-user.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 1; 115-120
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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