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    Wyświetlanie 1-5 z 5
    Tytuł:
    Atypical application of the parametric method for track infrastructure inventory
    Autorzy:
    Czaplewski, Krzysztof
    Specht, Cezary
    Koc, Władysław
    Wilk, Andrzej
    Karwowski, Krzysztof
    Dąbrowski, Paweł
    Specht, Mariusz
    Chrostowski, Piotr
    Szmaglinski, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/906041.pdf
    Data publikacji:
    2020
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    inland navigation
    alignment methods
    navigation infrastructure
    navigation
    tracks
    data analysis
    Opis:
    For many years, satellite systems have seen widespread use in a variety of technical applications, as well as in operations related to setting-out and the exploitation of track infrastructure. Their main applications include an inventory of the trackage course and detecting changes in its position. In both of these tasks, the most important element that determines the quality of an analyses is the high accuracy of the determinations being carried out. Satellite surveying techniques are not always sufficiently accurate, and in such cases, it is necessary to employ other land surveying methods to process surveying data. This article presents the authors’ considerations with regards to the possibility of applying one of the most common land surveying adjustment methods, the parametric method, to operations related to an inventory of tram infrastructure in Gdańsk. The results are based on surveys carried out during a surveying campaign in the autumn of 2018. The considerations presented in the article concern a small part of the research conducted under project No. POIR.04.01.01-00-0017/17 entitled “Development of an innovative method for determining the precise trajectory of a railborne vehicle” which is being implemented by a consortium of Gdansk University of Technology and Gdynia Maritime University
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 61 (133); 31-38
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining horizontal curvature of railway track axis in mobile satellite measurements
    Autorzy:
    Koc, Władysław
    Wilk, Andrzej
    Specht, Cezary
    Karwowski, Krzysztof
    Skibicki, Jacek
    Czaplewski, Krzysztof
    Judek, Sławomir
    Chrostowski, Piotr
    Szmagliński, Jacek
    Dąbrowski, Paweł
    Specht, Mariusz
    Grulkowski, Sławomir
    Licow, Roksana
    Powiązania:
    https://bibliotekanauki.pl/articles/2086882.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    GNSS measurements
    railway track axis
    horizontal curvature
    moving chord method
    application
    accuracy assessment
    pomiary GNSS
    tor kolejowy
    oś
    krzywizna pozioma
    metoda ruchomej cięciwy
    zastosowanie
    ocena dokładności
    Opis:
    The article discusses the applicability of a novel method to determine horizontal curvature of the railway track axis based on results of mobile satellite measurements. The method is based on inclination angle changes of a moving chord in the Cartesian coordinate system. In the presented case, the variant referred to as the method of two virtual chords is applied. It consists in maneuvering with only one GNSS (Global Navigation Satellite System) receiver. The assumptions of the novel method are formulated, and an assessment of its application in the performed campaign of mobile satellite measurements is presented. The shape of the measured railway axis is shown in the national spatial reference system PL-2000, and the speed of the measuring trolley during measurement is calculated based on the recorded coordinates. It has been observed that over the test section, the curvature ordinates differ from the expected waveform, which can be caused by disturbances of the measuring trolley trajectory. However, this problem can easily be overcome by filtering the measured track axis ordinates to obtain the correct shape – this refers to all track segments: straight sections, circular arcs and transition curves. The virtual chord method can also constitute the basis for assessing the quality of the recorded satellite signal. The performed analysis has shown high accuracy of the measuring process.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 6; e139204, 1--10
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Graphene on quartz modified with rhenium oxide as a semitransparent electrode for organic electronics
    Autorzy:
    Krukowski, Paweł
    Piskorski, Michał
    Udovytska, Ruslana
    Kowalczyk, Dorota A.
    Lutsyk, Iaroslav
    Rogala, Maciej
    Dąbrowski, Paweł
    Kozłowski, Witold
    Łuszczyńska, Beata
    Jung, Jarosław
    Ulański, Jacek
    Matuszek, Krzysztof
    Nadolska, Aleksandra
    Przybysz, Przemysław
    Ryś, Wojciech
    Toczek, Klaudia
    Dunal, Rafał
    Krempiński, Patryk
    Czerwińska, Justyna
    Ster, Maxime Le
    Skulimowski, Marcin
    Kowalczyk, Paweł J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174856.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
    Tematy:
    graphene
    rhenium oxide
    anode
    organic light-emitting diode
    Opis:
    The presented research shows that commercially available graphene on quartz modified with rhenium oxide meets the requirements for its use as a conductive and transparent anode in optoelectronic devices. The cluster growth of rhenium oxide enables an increase in the work function of graphene by 1.3 eV up to 5.2 eV, which guarantees an appropriate adjustment to the energy levels of organic semiconductors used in organic light-emitting diode devices.
    Źródło:
    Opto-Electronics Review; 2022, 30, 4; art. no. e141953
    1230-3402
    Pojawia się w:
    Opto-Electronics Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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