Davide Giglio

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A class of production systems are considered in this paper with the aim of determining closed-loop strategies providing the production effort as functions of the system state. The key feature of the considered class of systems is that the demand and the way it is satisfied are asynchronous sequences of part requests and instantaneous withdrawals,(More)
An urban network of signalized intersections can be suitably modeled as a hybrid system, in which the vehicle flow behavior is described by means of a time-driven model and the traffic light dynamics are represented by a discrete event model. In this paper, a model of such a network via hybrid Petri nets is used to state and solve the problem of(More)
Signalized urban areas are microscopically represented by means of deterministic-timed Petri nets (DTPNs), with the purpose of providing a suitable modelling tool for traffic management and signalling control. The model described in this paper consists of signalized intersections and roads. In order to properly model traffic congestion, intersections are(More)
A microscopic model of signalized urban areas and its representation by means of stochastic-timed Petri nets are described in this paper, where a traffic-responsive control strategy, whose objective is the optimization of green duration of each stage, is also proposed. The Petri net representation here proposed is the new version of a previously proposed(More)
Urban signalized traffic areas are considered in this paper, with the aim of minimizing congestion situations via a traffic-responsive signalling control procedure founded on a hierarchical Petri net (PN) representation of the system. The higher level of the PN representation consists of net modules, each one representing an intersection, a road, a signal(More)
Michele Aicardi DIST – University of Genova Via Opera Pia 13 16145 – Genova, Italy Phone: +39 010 353 2746 Fax: +39 010 353 2154 Email: michele@dist.unige.it Davide Giglio, Member, IEEE DIST – University of Genova Via Opera Pia 13 16145 – Genova, Italy Phone: +39 010 353 2748 Fax: +39 010 353 2154 Email: Davide.Giglio@unige.it Riccardo Minciardi, Member,(More)
The problem of reducing congestion within urban areas by means of a traffic-responsive control strategy is addressed in this paper. The model of an urban traffic network is microscopically represented by means of deterministic and stochastic Petri nets, which allow a compact representation of the dynamic traffic network. To properly model traffic(More)
A production node within a network of interconnected production centers (as in supply chains) is considered in this paper, with the aim of optimizing inventory levels and production effort. The proposed Hybrid Inventory-Production model consists of two inventories (the input one for raw parts and the output one for processed parts) and a production resource(More)
A macroscopic model of an urban traffic network is proposed in this paper. Such a model considers explicitly queues in the links, in order to take into account congestion phenomena which usually characterize urban traffic neworks (spillbacks, bottlenecks, etc.). The traffic network is modelled by means of a directed graph, and the equations which drive the(More)