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Wyszukujesz frazę "Sokołowski, Aleksander" wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Algorithm for the extraction of selected rail track ballast degradation using machine vision
Autorzy:
Lesiak, Piotr
Bojarczak, Piotr
Sokołowski, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/27314062.pdf
Data publikacji:
2023
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
railway track
ballast degradation
image extraction algorithm
surface descriptors
tor kolejowy
Opis:
A number of physical methods are used to survey railway track ballast to assess its degradation as a function of deposition. Simulation tests on track models are also conducted. These testing methods, which are generally labour-intensive and expensive, provide an accurate understanding of the extent of ballast degradation. However, the impact of inadequate maintenance can be observed, even on the surface. Therefore, it seems natural in this case to use image registration. State-of-the-art machine vision systems of track geometry cars provide the means to do this. Obtained ballast images provide a baseline for evaluating its level in relation to sleepers. However, no information is available on other signs of track degradation, such as overgrown vegetation (weeds) or the so-called local muddy areas, which are generally a consequence of poor drainage and a lack of subgrade insulation. These degradations are observed to generate distinctive colour images that are superimposed on the overall image of the ballast surface. They differ in colour and shape. Hence, the authors used this phenomenon to develop an algorithm for the extraction of ballast degradation images based on RGB imaging. Surface descriptors have also been offered to assess these degradations. Extensive measurement material from the railway lines was used to conduct survey experiments based on the examples. The results clearly demonstrate the high success rate of the applied method.
Źródło:
Transport Problems; 2023, 18, 1; 129--141
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nieposłuszeństwo obywatelskie a państwo demokratyczne
Autorzy:
Gadkowski, Aleksander
Różański, Krzysztof
Sokołowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/629316.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Opis:
The aim of this article is to present the complex issue of civil disobedience in the democratic state. The authors pay attention to the fact that ineffectiveness may lay the foundation for civil disobedience. It should be stressed that the activity of the citizens in the form of civil disobedience shall not always harmonize with the legal norms of applicable democratic state of law. Civil disobedience may reflect varied interests of different social groups. These points of view – often very different - shall be perceived by the governmental authority, which in the decision-making process is forced to choose between the so-called “lesser evil”. The authors present the issue of civil disobedience by showing examples from the country and abroad.
Źródło:
Refleksje. Pismo naukowe studentów i doktorantów WNPiD UAM; 2014, 10
2081-8270
Pojawia się w:
Refleksje. Pismo naukowe studentów i doktorantów WNPiD UAM
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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