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    Wyświetlanie 1-6 z 6
    Tytuł:
    Simulation tasks for the didactic stand
    Autorzy:
    Kochan, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/393601.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    railway traffic simulation
    railway traffic operation management
    railway traffic operational control
    simulator
    symulacja ruchu kolejowego
    zarządzanie operacyjne ruchem kolejowym
    kontrola operacyjna ruchu kolejowego
    symulator
    Opis:
    In the field of railway transport many activities are taken to achieve higher availability of offered services. A few of them consider more flexible rules of creating and starting trains. This requirement translates into greater complexity of railway traffic opertional management and control (RTMC). At the Faculty of Transport of Warsaw University of Technology classes for students have been conducted for several years with the use of the KSR-EDU stand. Taking into account the described trends of railway traffic nature, the KSR-EDU stand was connected to a simulator of real railway traffic. This connection allows to practice various and more complicated movement scenarios. The article describes RTMC layer model and simulator architecture in general. Two simulation tasks are described in details. The algorithms of simulation tasks for different levels of simulation are presented. In the end the benefits arising from application of the simulation for particular didactic tasks are discussed.
    Źródło:
    Archives of Transport System Telematics; 2013, 6, 3; 14-17
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inspection of the railway infrastructure with the use of unmanned aerial vehicles
    Autorzy:
    Kochan, A.
    Rutkowska, P.
    Wójcik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/393762.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    railway infrastructure
    unmanned aerial vehicles
    UAV
    infrastruktura kolejowa
    bezzałogowy statek powietrzny
    Opis:
    The Transport Certification Centre at the Faculty of Transportation of the Warsaw University of Technology launched a research and development project under the name "Dron-monitor", which aimed to perform stocktaking and examine the technical condition of the railway infrastructure using unmanned aerial vehicles UAV. The assumption of the project was to create digital documentation of the railway infrastructure, which will enable an objective and impartial assessment of the infrastructure elements. The article presents the results of the conducted project and displays the considerations regarding the suitability of the applied method for the needs of conducting stocktaking and testing the technical condition of the railway infrastructure with the use of UAV.
    Źródło:
    Archives of Transport System Telematics; 2018, 11, 2; 11-17
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The importance of the cryptographic key management system for the cybersecurity of the ERTMS system
    Autorzy:
    Kochan, A.
    Gruba, Ł.
    Koper, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/393503.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    cybersecurity
    cryptographic keys
    ERTMS/ETCS
    cyberbezpieczeństwo
    klucze kryptograficzne
    Opis:
    The ERTMS system is intended to provide an interoperable approach to train control and signalling in the European Union. The basis for effective train control at ETCS Level 2 is wireless data transmission via GSM-R. This transmission must be protected by cryptographic techniques to ensure its safety. The authors in their article present technical solutions and their applications related to cryptographic keys. They present the requirements that have been formulated for the cryptographic key management system. They discuss its architecture, functions and possibilities of increasing the security of management processes with the use of solutions applied in other branches of the economy. In the last point of the article attention is drawn to the threats posted by the complex process of managing a set of cryptographic keys, the number of which can be measured by tens of thousands.
    Źródło:
    Archives of Transport System Telematics; 2019, 12, 2; 17-24
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inversion of selected structures of block matrices of chosen mechatronic systems
    Autorzy:
    Trawiński, T.
    Kochan, A.
    Kielan, P.
    Kurzyk, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/202402.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    arrowhead matrices
    mechatronic systems
    matrix inversion
    computational complexity
    systemy mechatroniczne
    złożoność obliczeniowa
    grupy macierzy
    macierz inwersji
    Opis:
    This paper describes how to calculate the number of algebraic operations necessary to implement block matrix inversion that occurs, among others, in mathematical models of modern positioning systems of mass storage devices. The inversion method of block matrices is presented as well. The presented form of general formulas describing the calculation complexity of inverted form of block matrix were prepared for three different cases of division into internal blocks. The obtained results are compared with a standard Gaussian method and the “inv” method used in Matlab. The proposed method for matrix inversion is much more effective in comparison in standard Matlab matrix inversion “inv” function (almost two times faster) and is much less numerically complex than standard Gauss method.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 853-863
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radio planning and transmission network design of GSM-R system for the railway line
    Autorzy:
    Gruba, Ł.
    Siergiejczyk, M.
    Kochan, A.
    Gago, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/393559.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    ERTMS
    GSM-R
    radio planning
    transmission network
    planowanie radiowe
    sieć transmisyjna
    Opis:
    One of the biggest projects aimed at integration of the infrastructure of the European Union is the implementation of the European Rail Traffic Management System on the railway network of the Member States. Its goal is to unify the railway traffic control system in European countries, increase safety as well as ensure the interoperability of rail transport. One of its main components is ERTMS/GSM-R subsystem. This article presents the structure of the GSM-R system as well as associated systems. Services offered by the system are discussed. The rules of planning radio networks including the propagation model are described. The final part of the paper contains an example of radio planning for GSM-R system for selected railway line covering computations as well as simulation tests. The simulation of the radio coverage was prepared with the usage of ICS Telecom software.
    Źródło:
    Archives of Transport System Telematics; 2017, 10, 2; 3-7
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improved efficacy of eugenol and trans-anethole in combination with octenidine dihydrochloride against Candida albicans and Candida parapsilosis
    Autorzy:
    Dąbrowska, M.
    Zielińska-Bliźniewska, H.
    Kwiatkowski, P.
    Guenther, S.
    Łopusiewicz, Ł.
    Kochan, E.
    Pruss, A.
    Sienkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/28761632.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Medycyny Wsi
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2023, 30, 1; 204-210
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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