7 research outputs found

    MODELING AND ANALYSIS OF AN AUTONOMOUS MOBILITY ON DEMAND SYSTEM

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    Ph.DDOCTOR OF PHILOSOPH

    SimMobility Short-Term: An Integrated Microscopic Mobility Simulator

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    This paper presents the development of an integrated microscopic mobility simulator, SimMobility Short-Term (ST). The simulator is integrated because its models, inputs and outputs, simulated components, and code base are integrated within a multiscale agent- and activity-based simu- lation platform capable of simulating different spatiotemporal resolutions and accounting for different levels of travelers’ decision making. The simulator is microscopic because both the demand (agents and its trips) and the supply (trip realization and movements on the network) are microscopic (i.e., modeled individually). Finally, the simulator has mobility because it copes with the multimodal nature of urban networks and the need for the flexible simulation of innovative transportation ser - vices, such as on-demand and smart mobility solutions. This paper follows previous publications that describe SimMobility’s overall framework and models. SimMobility is an open-source, multiscale platform that considers land use, transportation, and mobility-sensitive behavioral models. SimMobility ST aims at simulating the high-resolution movement of agents (traffic, transit, pedestrians, and goods) and the operation of different mobility services and control and information systems. This paper presents the SimMobility ST modeling framework and system architecture and reports on its successful calibration for Singapore and its use in several scenarios of innovative mobility applications. The paper also shows how detailed performance measures from SimMobility ST can be integrated with a daily activity and mobility patterns simulator. Such integration is crucial to model accurately the effect of different technologies and service operations at the urban level, as the identity and preferences of simulated agents are maintained across temporal decision scales, ensuring the consistency and accuracy of simulated accessibility and performance measures of each scenario.Singapore. National Research Foundation (CREATE program)Singapore-MIT Alliance. Center. Future Urban Mobility Interdisciplinary Research Grou

    Pojazdy autonomiczne. Wstęp

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    Niewątpliwie rozważania należałoby zacząć od definicji – co rozumiemy przez pojęcie pojazdu autonomicznego? Odpowiedź na to pytanie wcale nie jest prosta. W literaturze, w wielu rozważaniach naukowych istnieje bardzo dużo definicji tego pojęcia. Co więcej, problematyczne jest używanie go w odniesieniu do niektórych technologii kierowania pojazdami. Terminologia obecnie używana nie jest jednolita, np. pojazdy autonomiczne, pojazdy automatyczne, CAD, platooning, ADAS itp. Ujednoliceniu niektórych pojęć służy klasyfikacja SAE (Society of Automotive Engineers), choć i ona nie jest jednoznaczna (stopień autonomizacji podzielono na pięć poziomów)

    Wybrane systemy transportu autonomicznego. Systemy PRT. Systemy torowe i ich ewolucja

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    Trudno dzisiaj jednoznacznie powiedzieć, kto był prekursorem pojazdu autonomicznego. Niewątpliwie idea pojazdu poruszającego się samodzielnie od dawna nurtowała inżynierów, specjalistów transportu, a jej początki sięgają jeszcze czasów przed II wojną światową. W roku 1926 amerykańska firma Chandler Motor Car eksperymentowała z samochodem sterowanym pośrednio przez kierowcę siedzącego w podążającym za pojazdem samochodzie

    Changes in blood parameters induced by experimental jaagsiekte sheep retrovirus infection

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    The aim of the study was to assess the changes of blood parameters in 12 three-week-old Polish Merino sheep subjected to experimental jaagsiekte sheep retrovirus (JSRV) infection

    Security theory and practice: Evolving Human Security Challenges

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    From Introduction: "The concept of human security has become the next stage in the evolution of the concept of expanded recognition of security. Admittedly, human security refers to an expanded idea of security, which, in contrast to traditional security conceptualisations, does not focus merely on the protection of the state, but rather on the protection of an individual and his/her human dignity."(...
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