Archivio per gennaio 2018

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La notion de résilience

via La notion de résilience

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Improving public transportation systems with self-organization: A headway-based model and regulation of passenger alighting and boarding

Complexity Digest

The equal headway instability?the fact that a configuration with regular time intervals between vehicles tends to be volatile?is a common regulation problem in public transportation systems. An unsatisfactory regulation results in low efficiency and possible collapses of the service. Computational simulations have shown that self-organizing methods can regulate the headway adaptively beyond the theoretical optimum. In this work, we develop a computer simulation for metro systems fed with real data from the Mexico City Metro to test the current regulatory method with a novel self-organizing approach. The current model considers overall system?s data such as minimum and maximum waiting times at stations, while the self-organizing method regulates the headway in a decentralized manner using local information such as the passenger?s inflow and the positions of neighboring trains. The simulation shows that the self-organizing method improves the performance over the current one as it adapts to environmental changes at the timescale…

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Time is real? I think not

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