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    Wyświetlanie 1-4 z 4
    Tytuł:
    Using NEO4J database and graph model for analysis of metropolitan railway connections of Silesian voivodeship in Poland
    Autorzy:
    Buchwald, Paweł
    Sobczak, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/1991138.pdf
    Data publikacji:
    2021-12-30
    Wydawca:
    Politechnika Gdańska
    Tematy:
    Neo4j
    graph analysis
    Cypher
    .Net
    railway connections
    transport
    logistics
    Opis:
    The study concerns the possibility of using the Neo4j database as a graph analysis tool. The analysis was presented on the example of the railway connection network assessment when designing a new version of the railway infrastructure in the Silesian Voivodeship. The authors present the concepts of a laboratory environment built on the basis of the Neo4j database, and an application that allows obtaining data and modifying the railway infrastructure model. Thanks to this, it is possible to simulate many variants of the designed model and its evaluation using the proposed measurement indicators. The study presents methods and tools of analysis that can be successfully used to assess the topology of a graph in many different research areas, such as analysis of management systems, computer networks or biological systems.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2021, 25, 4; 419-430
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Safe locker - a secure cargo transport control support IT system
    Autorzy:
    Anus, Artur
    Buchwald, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/1954463.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska
    Tematy:
    GPGPU
    PDE
    Opis:
    The article presents the assumptions and architectural implementation of a cargo transport control support system, as well as the preliminary results of tests of the operation of this system in environmental conditions identical with the conditions of natural operation.The aim of the article is the publication of the research results collected during the design, implementation and operation of the system, which relate to the proposed solutions for selected problems that emerged during the development of the system by the research and development team. The article also presents the completed development work and possibilities in the field of the system improvement due to security reasons through integration with modern data processing systems based on a block chain (Blockchain).
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2019, 23, 1; 19-28
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An egg mobile device as a game controller
    Autorzy:
    Dawid, Aleksander
    Buchwald, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/1987060.pdf
    Data publikacji:
    2021-12-30
    Wydawca:
    Politechnika Gdańska
    Tematy:
    EEG
    EEG signal disturbance
    signal processing
    amplitude driven control
    game controller
    Opis:
    In this work the real-time control of computer games was explored by a single electrode mobile electroencephalography (EEG) device with a Bluetooth interface. The amplitude variation in the two frequency bands of 4-12 Hz and 60-200 Hz was selected as the real-time control parameter. The frequency-domain of a raw EEG signal was calculated using the discrete Fourier transform. The time-dependent signal samples equal to 512, 1024, and 2048 time points in size were used in our research. The well-known classic Pong game was used to try out our controller. The developed software handles communication with the device and real-time game rendering. The .NET Framework with the C# programming language was used as a develop-ment tool. 50 game play trials were made for each controller setup. The obtained results are promising for the possible use of the device in real-time communication with computer devices for people with hand disabilities.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2021, 25, 4; 397-407
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Open concurrent network communication methods in building distributed Web applications
    Autorzy:
    Buchwald, Paweł
    Dawid, Aleksander
    Powiązania:
    https://bibliotekanauki.pl/articles/1986993.pdf
    Data publikacji:
    2021-12-30
    Wydawca:
    Politechnika Gdańska
    Tematy:
    WebRTC
    e-learning
    LTE
    LAN
    WiFi
    video transmission
    jitter
    delay
    bandwidth
    Opis:
    The attractiveness of real-time multimedia communication as part of an e-learning platform largely depends on the quality of the telecommunications infrastructure and on theservices that support the exchange of audiovisual data. The research subject of this workis communication between stationary and mobile devices using distributed services such as Web Real-Time Communication (WebRTC) running in HTML5 compliant web browsers. The test connections were carried out in a peer-to-peer architecture over a local wireless WiFi network and a mobile network supporting the Long Term Evolution (LTE) standard for data interchange. Several audiovisual sessions between two clients were analyzed for different connection scenarios. Parameters responsible for the transmission quality, such as delay, jitter,packet loss, or the speed of sending and receiving video frames were measured for each scenario. Open audiovisual communication system performance experiments were conducted under real operating conditions. The obtained results indicated potential applications in the development of e-learning websites.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2021, 25, 4; 409-418
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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