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    Wyświetlanie 1-4 z 4
    Tytuł:
    The EMITRANSYS model and the possibilities of its application for the analysis of the development of sustainable transport systems
    Autorzy:
    Jacyna, Marianna
    Żak, Jolanta
    Gołębiowski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/132999.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    development of transport system
    simulation tools
    EMITRANSYS
    mathematical model
    rozwój systemu transportowego
    narzędzia symulacyjne
    model matematyczny
    Opis:
    The transport system has a direct impact on the economic and socio-economic situation of each country. Planning its development is an important element of policy. Bearing in mind the importance and complexity of this issue, it should be considered using both quantitative methods and mathematical models, as well as advanced simulation tools for modelling transport. The article presents a proposal for an approach to simulation tests of the different transport system in the aspect of the emission of harmful exhaust gas compounds from road transport. The tool for analysing and assessing the functioning of existing or designed systems is a model in which the properties of the real system, which are important from the point of view of the research objective, should be mapped. The Model of Proecological Transport System (MEST) was presented formally as an ordered four. Also elements of optimization taks shaping of proecological transport system in form of datas, decision variables, conditions and goal function were presented. An example of tests on simulation model was shown.
    Źródło:
    Combustion Engines; 2019, 58, 4; 243-248
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Use of the Queueing Theory for the Analysis of Transport Processes
    Autorzy:
    Jacyna, Marianna
    Żak, Jolanta
    Gołębiowski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/503924.pdf
    Data publikacji:
    2019
    Wydawca:
    Międzynarodowa Wyższa Szkoła Logistyki i Transportu
    Tematy:
    modelling processes
    rail transport
    mass service theory
    traffic flow
    Opis:
    This article focuses on the application of the queueing theory for the analysis of transport processes with regard to rail traffic. Selected aspects of queueing theory application for the analysis and rail traffic flow assessment are presented. A literature review regarding process modelling in rail transport using mass service theory models was performed. In order to study rail traffic flow, the application Java Modelling Tools- JSIM graph was used. The train movement process was analysed with regard to the traffic flow. The study was conducted on the basis of selected stretches of railway lines, numbers 2 (central long-distance in Warsaw) and 448 (central suburban in Warsaw).
    Źródło:
    Logistics and Transport; 2019, 41, 1; 101-112
    1734-2015
    Pojawia się w:
    Logistics and Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Three faces of balancing: the development of automatic balancing devices for shafts in motion
    Autorzy:
    Krygier, Michał
    Żak, Paweł
    Podsędkowski, Leszek
    Wróblewski, Piotr
    Podsędkowski, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/27309890.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    large shafts
    balancing device
    automatic balancing
    development
    urządzenie równoważące
    automatyczne równoważenie
    rozwój
    Opis:
    In this paper, the authors present a novel construction of an automatic balancing device applicable to balancing shafts working in a heavily polluted environment. The novelty of the presented system lies in the fact that its utilization requires no changes to be made in the already existing shafts. Also, the system is capable of working during the operation of the balanced shaft, so there is no need to stop it. The propulsion system is based on eddy current braking, therefore no wires need to be used in the device. During the development process of the system, three iterations of the device were created. Each iteration is presented, described, and discussed. The advantages and drawbacks of each version are pointed out and explained thoroughly. The correctness of the design was verified by the created devices that were assembled and fixed on shafts to prove the design assumptions.
    Źródło:
    Archive of Mechanical Engineering; 2023, LXX, 3; 351--366
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decision problems in designing database architecture for the assessment of logistics services
    Autorzy:
    Izdebski, Mariusz
    Jacyna-Gołda, Ilona
    Gołębiowski, Piotr
    Gołda, Paweł
    Pyza, Dariusz
    Żak, Jolanta
    Powiązania:
    https://bibliotekanauki.pl/articles/2091168.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    database architecture
    logistics services
    European Portal of Logistics Services
    architektura baz danych
    usługi logistyczne
    Europejski Portal Usług Logistycznych
    Opis:
    This paper presents decision problems which occur in designing database architecture for the assessment of logistics services. In the work, it was emphasized that the key stages in database design is to define a database model comprising a set of rules that characterize the structure of data in the database and a list of operations that can be performed on the data entered into the database. Research presented in the article is conducted as part of the project on the European Portal of Logistics Services (EPLOS) implemented on the basis of an agreement with the National Center for Research and Development under the EUREKA program. As part of the research carried out as part of the project, the principles of functioning of distributed architecture were developed and evaluated for the services offered by carriers or logistics operators operating on the international market. These include operators providing air services, international road, intermodal, sea transports, etc. The article indicates that the purpose of the database responsible for processing information in cargo intermodal connections is not only to collect input data on aviation and road infrastructure, but also to save the results generated by computational modules. At work, the modular database structure for assessing logistics services consisting of among others from dynamic data module, archive module, data entry module, optimization algorithm calibration module was proposed. Catalog structure and rules for supplying the database with data on the example of a railway operator were presented in detail.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2020, 108; 53--71
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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