F. Tisato and F. DePaoli, "On the Duality between EventDriven and Time Driven Models". Proc. of 13th. IFAC DCCS, 1995.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....and consumed on reading. Event information is transmitted in event messages. Periodic state observations or sporadic event observations are two alternative approaches for the observation of a dynamic environment in order to reconstruct the states and events of the environment at the observer [40]. Periodic state observations produce a sequence of equidistant snapshots of the environment that can be used by the observer to reconstruct those events that occur within a minimum temporal distance that is longer than the duration of the sampling period. Starting from an initial state, a ....

F. Tisato and F. DePaoli. On the Duality between Event-Driven and TimeDriven Models. In Proceedings of the 13th Workshop on Distributed Computer Control Systems, pages 31--36, 1995.

....sites and will have to function in uncertain environments. They are often closely integrated with the surrounding ITinfrastructure and they have to interact with external services. In such systems, the execution of application tasks is usually modeled by adopting an event triggered approach [Tis95] There, all communication and processing activities are initialized (triggered) upon occurrence of significant events. It often requires an on line scheduling strategy to determine and activate the appropriate tasks to be executed [BuW 90, StR 90] Even more, the environment dependent occurrence ....

F. Tisato, F. DePaoli: "On the Duality between Event-Driven and Time-Driven Models", Proc. of the 13th IFAC DCCS, pp. 31-36, Toulouse, 1995.

....real time requirements. Furthermore, being situated in unpredictable environments, dynamic adaptations to changes in the environment and in the tasks to be performed must be dealt with. In such systems, the execution of application tasks is usually modeled by adopting an eventtriggered approach [Tis 95] There, all communication and processing activities are initiated (triggered) upon occurrence of significant events. It often requires an on line scheduling strategy to determine and activate the appropriate tasks to be executed [BuW 90, StR 90] Even more, the environment dependent occurrence ....

F. Tisato, F. DePaoli. On the Duality between Event-Driven and Time-Driven Models, Proc. of the 13th IFAC DCCS, pp. 31-36, Toulouse, 1995.

....our approach to tackle this problem. Then, the question to be answered is: Is it possible to run a real time application in a predictable manner in such a heterogeneous environment [11] In such systems, the execution of application tasks is usually modeled by adopting an event triggered approach [18]. There, all communication and processing activities are initialized (triggered) upon occurrence of significant events. It often requires an on line scheduling strategy to determine and activate the appropriate tasks to be exe cuted [2, 16] Even more, the environment dependent occurrence of ....

F. Tisato, F. DePaoli: "On the Duality between EventDriven and Time-Driven Models", Proc. of the 13th IFAC DCCS, pp. 31-36, Toulouse, 1995

....This paper describes a reference architecture for Objectoriented, Real time, Distributed Supervision and Control Systems (SCS) which lifts distribution, activation and timing up to an explicit, programming in the large level. The architecture draws on the authors research (see [15] 10] and [18]) and professional experience, especially in the traffic control area. According to [16] the architecture of a software system is its gross organisation in terms of computational components and connectors. In [6] 7] 9] and [8] we extended that notion by identifying four aspects of software ....

....the latter starts from the user or control applications and eventually reaches the actuation images that physically control the devices. A key issue of the whole architecture is that neither images nor projectors embed any activation strategy: they can be viewed as passive entities [18]. They define data and alignment mechanisms (projectors) but are not aware of all the issues regarding when to retrieve data, transfer them between images, and process them. Such issues depend on specific application domain requirements and must be defined by the domain engineer without having to ....

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F. Tisato and F. DePaoli. On the duality between eventdriven and time-driven models. In Proceedings of the 13th Workshop on Distributed Computer Control Systems, Toulouse, France, September 27-29 1995.

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Tisato, F. and DePaoli, F., On the Duality between Event-driven and Time-driven Models, Proceedings of the 13th Workshop on Distributed Computer Control Systems, September 27-29 1995, Toulouse, France

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F. Tisato and F. DePaoli, "On the Duality between EventDriven and Time Driven Models". Proc. of 13th. IFAC DCCS, 1995.

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