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    Wyświetlanie 1-4 z 4
    Tytuł:
    Fractional Statistics in Low-Dimensional Systems - Random-Phase Approximation for Anyons at Finite Temperatures
    Autorzy:
    Jacak, L.
    Sitko, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1929138.pdf
    Data publikacji:
    1993-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    05.30.-d
    74.20.Kk
    Opis:
    The non-zero temperature theory for non-interacting anyon gas is developed within the random-phase approximation. It is proved that the phase transition superconducting normal state of anyons does not occur and the Meissner effect disappears at non-zero temperatures. The mutual correspondence of new Haldane theory of anyons and mean field treatment is found. A short overview of the fractional statistics theory is also given.
    Źródło:
    Acta Physica Polonica A; 1993, 83, 4; 399-416
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of efficiency of extraction of built-up areas in aerial images using fractal analysis and morphological granulometry
    Porównanie efektywności wyodrębniania terenów zabudowanych na obrazach lotniczych przy pomocy analizy fraktalnej i granulometrii morfologicznej
    Autorzy:
    Kupidura, P.
    Popławski, W.
    Sitko, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/132365.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Tematy:
    remote sensing
    mathematical morphology
    fractal analysis
    classification
    digital image processing
    teledetekcja
    morfologia matematyczna
    analiza fraktalna
    klasyfikacja
    cyfrowe przetwarzanie obrazów
    Opis:
    The paper presents a comparison of results of the automatic extraction of built-up areas, based on fractal analysis and granulometric maps, in the aerial images. Built-up areas as a land-use class can be clearly seen in an aerial or satellite image, due to its high granularity, but for the same reason they are very difficult to extract using a “traditional” non-contextual, pixel-based classification. Both approaches presented in the paper, using fractal analysis and morphological granulometry, base generally on a pixel-based classification, but performed on images reviously processed using these two types of processes. Fractal analysis consists in an empirical computing of fractal dimension of parts of an image, using a box-counting method. Such an approach generates an image where pixel values are equal to a fractal dimension values of their neighbourhood. Since we can interpret a fractal dimension as a level of granularity, a simple reclassification of such an image can improve a performance of an automatic extraction of built-up area effectively. The approach based on a morphological granulometry creates a number of granulometric maps – images where pixel values mean an amount of objects of certain size in a set neighbouring fragment of an image. This way a number of these images can be processed using a pixel-based classification, to perform an effective extraction of built-up areas in an image. The results of the presented approaches have been compared to the reference mask obtained basing on a visual interpretation of the image.
    Źródło:
    Teledetekcja Środowiska; 2015, 52; 29-37
    1644-6380
    Pojawia się w:
    Teledetekcja Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Device Failure in the Mechanical Production Plant
    Autorzy:
    Sitko, J.
    Mikuš, R.
    Božek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2064943.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    plant
    failure
    analysis
    repair
    quality
    Opis:
    The article evaluates the failure rate of devices in the Mechanical Processing Plant using a traditional quality tool, the Pareto-Lorenzo diagram. A comparative analysis of failure rates was performed, recorded in repair, inspection and maintenance card. Then, changes were proposed in order to reduce failure rates and earlier detection of equipment malfunctions. In order to analyze the failure rate of grain washer equipment during thick coal preparation process, one quality management tools was used - the Pareto-Lorenzo diagram. In this case, it is important to assess the mechanical failure of devices, and demonstrating which devices generate most repairs. Based on materials made available by the mine, such as: Repair, inspection and maintenance cards, Device cards, DTR documentation. Quantitative and qualitative assessment the most frequently occurring mechanical failures during operation of devices in process enrichment of coarse sizes was carried out. An attempt was made to assess failure rate of devices on a grain washer. A comparative analysis of failure rates in 2015-2017 recorded in the repair, inspection and maintenance card was carried out. Then, changes were proposed to stand, in order reduce failure rates, and earlier detection equipment malfunctions.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 93--99
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Helminth fauna of birds of prey in Slovakia
    Autorzy:
    Komorova, P.
    Hurnikova, Z.
    Sitko, J.
    Spakulova, M.
    Salamatin, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/6270.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    helminth fauna
    bird
    Falconiformes
    Accipitriformes
    Strigiformes
    wild animal
    parasite
    Slovakia
    Źródło:
    Annals of Parasitology; 2016, 62, Suppl.
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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