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    Wyświetlanie 1-4 z 4
    Tytuł:
    Proposed benchmarks for PRT networks simulation
    Proponowane punkty odniesienia do symulacji sieci PRT
    Autorzy:
    Mieścicki, J.
    Daszczuk, W. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/224290.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    urban transport
    Personal Rapid Transit (PRT)
    PRT network models
    transport miejski
    sieć PRT
    modele sieci PRT
    Opis:
    Personal Rapid Transit (PRT) is a promising form of urban transport. Its operation relies on the use of small unmanned vehicles which carry the passengers between the stations within a dedicated network. Various aspects of the PRT network performance are frequently evaluated using the discrete-event simulation. The paper supports the need of establishing some reference models for the simulation of PRT networks, targeted mainly at the needs of the research on the network management algorithms. Three models of such PRT network models are proposed and discussed. The presented models can play the role of benchmarks which would be very useful for comparative evaluation of heuristic control algorithms, developed by different research groups.
    Personal Rapid Transit (PRT) jest obiecującą formą transportu miejskiego. Jego działanie opiera się na wykorzystaniu małych bezzałogowych pojazdów, które przewożą pasażerów między stacjami w sieci dedykowanej. Różne aspekty wydajności sieci PRT są często oceniane przy użyciu symulacji dyskretnego zdarzenia. Artykuł popiera potrzebę ustanowienia kilku modeli referencyjnych do symulacji sieci PRT, ukierunkowanych głównie na potrzeby badań nad algorytmami zarządzania siecią. Proponowane i omawiane są trzy modele takich sieci PRT. Prezentowane modele mogą pełnić rolę wzorców, które byłyby bardzo przydatne do oceny porównawczej heurystycznych algorytmów sterowania, opracowanych przez różne grupy badawcze.
    Źródło:
    Archives of Transport; 2013, 27-28, 3-4; 123-133
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of residents travel characteristics along beijing rail transit line based on binary choice model
    Autorzy:
    Cai, Z.
    Yan, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/224099.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    urban transportation
    rail transit
    travel characteristics
    site attraction area
    binary choice models
    transport miejski
    transport kolejowy
    charakterystyka transportu
    Opis:
    From ancient to modern times, in the historical process of urban development, urban transportation has been developing along with the development of the city's political, economic and cultural industries, and the relationship between each other has always been a topic constantly discussed by planning scholars. The development of urban transportation promotes the urban population gathering and industrial development, and promotes the development of urban geographical space. At the same time, it also brings endless convenience to urban residents, so that they can complete the displacement from the beginning to the destination with relatively low cost. However, with the rapid development of urban scale and the rapid growth of urban population, the problems of traffic congestion and land resource shortage in big cities of China seriously restrict the improvement of the quality of life of residents and the further development of the city. In this context, compact city is the inevitable choice for future urban development, while the transportation system supporting compact city form can only be public transportation. As a high-volume, efficient and rapid public transport mode, rail transit can not only solve the traffic congestion problem in high-density areas of cities, but also optimize the development and utilization of urban land and adjust the urban spatial layout, which is of great significance for the sustainable development of cities. The network of rail transit in Beijing becomes the backbone of public passenger transport system, and play an irreplaceable role in guiding the urban space layout adjustment, population migration and the transformation of traffic structure. The study of travel characteristics of the residents who live along the rail transit, in-depth analysis the relationship of the rail transit, the population migration and commuter travel, it is of great significance providing decision support for urban planning. Based on binary choice model, establishing the residents' travel choice model, rail transit impact model of different crowds. Study the relationship between rail transit and residents' travel characteristics, predict the rail transit to guide the trend of population migration.
    Źródło:
    Archives of Transport; 2018, 47, 3; 19-27
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating accessibility of small communities via public transit
    Autorzy:
    Danesi, Antonio
    Tengattini, Simone
    Powiązania:
    https://bibliotekanauki.pl/articles/1833639.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    public transit
    travel impedance
    schedule delay
    time-of-day preference curves
    transport publiczny
    podróż
    opóźnienia
    krzywa preferencji pory dnia
    Opis:
    Accessibility to and from urban centres allows small communities’ dwellers to participate in primary activities and use essential services that are not available on-site, such as educational, work and medical services. Public transport networks are supposed to enhance accessibility and pursue equity principles, overcoming socio-economical differences among people that can exacerbate during crisis. In this paper a methodology is proposed and implemented to assess small communities’ accessibility via public transit. A metric is defined based on the calculation of total travel time, taken as a proxy of travel impedance, with consideration of in-vehicle time, schedule delay and users’ arrival and departure preference curves (i.e. time-of-day functions). A “rooftops” model is specified and implemented under the assumption that travellers cannot accept (scheduled) late arrival or early departure time penalties before and after the participation in their activities in the main urban centre, as many activities rarely admit time-flexibility. Also, a public transport specific impedance factor (PTSIF) is proposed, in order to account for travel impedance determinants, which are a consequence of service scheduling and routing decisions and not due to inherent geographical and infrastructural disadvantages affecting car users too. An application of the methodology for the city of Cesena, Italy, and 90 surrounding small communities is presented. The city is served by train and bus services. Assessment of small communities' accessibility based on both total travel time and PTSIF is presented and discussed. This practice-ready quantitative method can help transport professionals to evaluate impacts on small communities’ accessibility in light of public transport service changes or reduction. Quantitative approach to support strategic decisions is needed, for example, both to assess public transport strengthening politics against depopulation of rural and marginal mountainous areas and to mitigate the effects of possible increasing concentration of services towards high-demand lines, which may follow as a consequence of budget cuts or contingencies, such as vehicle capacity reductions required by sanitary emergencies.
    Źródło:
    Archives of Transport; 2020, 56, 4; 59-72
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comprehensive service quality evaluation of public transit based on extension cloud model
    Autorzy:
    Hu, Xinghua
    Chen, Xinghui
    Zhao, Jiahao
    Yu, Kun
    Long, Bing
    Dai, Gao
    Powiązania:
    https://bibliotekanauki.pl/articles/2173929.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    traffic engineering
    public transit
    urban traffic congestion
    service quality
    optimization
    sustainable development
    inżynieria ruchu
    transport publiczny
    zatory komunikacyjne
    ocena jakości usług
    optymalizacja
    zrównoważony rozwój
    Opis:
    Prioritizing the development of public transit and enhancing its attractiveness is an important way to solve the problem of urban traffic congestion and achieve sustainable development. To improve the service quality and overall operational efficiency of urban public transit, an evaluation index system related to the comprehensive experience of passengers, service supply quality of public transit enterprises, and supervision of management departments was introduced from both the demand and the supply of public transit travel services. Based on the data distribution characteristics of the boxplot in statistics, the evaluation level and corresponding value range of each index were determined, and the comprehensive weight of the index was determined using the linear weighting method combining the analytic hierarchy process and the entropy weight method, so as to reduce the influence of single weighting method on the evaluation results of comprehensive service quality of public transit. An evaluation method of public transit comprehensive service quality based on the extension cloud model was established. The evaluation results of the model were obtained by calculating the cloud affiliation and comprehensive certainty, and a reliability factor was used to test the evaluation results, which solved the problem of randomness and fuzziness in the process of comprehensive service quality evaluation of public transportation and made the evaluation results closer to the reality. Finally, the established comprehensive evaluation model was applied to a city for example analysis, and the corresponding evaluation level was obtained as good. The value of the reliability factor in the model was less than 0.01, indicating that the model has good applicability and a certain application value for the comprehensive service quality evaluation of public transit. The evaluation method fully considered a variety of evaluation indicators, specified the evaluation level of comprehensive service quality of public transit, and the evaluation results provide a theoretical basis for public transport enterprise to make targeted improvement measures.
    Źródło:
    Archives of Transport; 2022, 61, 1; 103--115
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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