Guillaume Gardey

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In this paper, we present the features of Romeo, a Time Petri Net (TPN) analyzer. The tool Romeo allows state space computation of TPN and on-the-fly model-checking of reachability properties. It performs translations from TPNs to Timed Automata (TAs) that preserve the behavioural semantics (timed bisimilarity) of the TPNs. Besides, our tool also deals with(More)
We study some control synthesis problems on an extension of Time Petri Nets that model a plant and its environment. The Time Petri Net control model both represents controllable and uncontrollable events, the problem is then to design a function (controller) such that a given property is fulfilled. We focus our analysis on safety properties expressed on the(More)
The theory of Petri Nets provides a general framework to specify the behaviors of real-time reactive systems and Time Petri Nets were introduced to take also temporal specifications into account. We present in this paper a forward zone-based algorithm to compute the state space of a bounded Time Petri Net: the method is different and more efficient than the(More)
In this paper, the problem of synthesizing controllers that ensures non interference for multilevel security dense timed discrete event systems modeled by an extension of Timed Automata, is addressed for the first time. We first discuss a notion of non interference for dense real-time systems that refines notions existing in the literature and investigate(More)
In this paper, the problem of synthesizing controllers that ensures non interference for multilevel security dense timed discrete event systems modeled by an extension of Timed Automata, is addressed for the first time. We first discuss a notion of non interference for dense real-time systems that refines notions existing in the literature and investigate(More)
The purpose of the experiment was to prove the importance of the vascular factor in uterine hypoplasia. The animal that was chosen was the rat. The method that was used consisted of devascularisation of one of the two uterine cornua. This was done without altering the blood supply to the ovaries when the animals were 7 weeks of age, which is the immediate(More)
After we had made rats' uteri hypoplastic by surgical interference with their blood supply we carried out a second part of our study by treating the animals that had been operated on with a beta-mimetic substance in order to lessen or counter completely the effects of surgical devascularisation. From our results we can conclude in a statistically(More)