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Rozważane są uogólnione sieci Petriego zwane sieciami kontekstowymi i procesy takich sieci. Procesy sieci kontekstowych są definiowane jako porządki częściowe z pewna dodatkową strukturą. Definiuje się operacje składania procesów tak, że każdy proces sieci kontekstowej można otrzymać składając procesy odpowiadające miejscom i tranzycjom tej sieci. Definiuje się podobne do macierzy i zwane tablicami...
The paper is concerned with modelling object-oriented distributed computational systems. Systems are modeled by specifying their states and processes. Processes of a system are defined as activities in a universe of objects, each object with a set of possible states, each activity changing states of some objects and establishing or destroying relations among objects. Partial operations on processes...
Praca dotyczy algebr, które można otrzymać przez wyposażenie zbiorów procesów sieci Petriego w składanie sekwencyjne i równoległe. Rozważane algebry są kategoriami z dodatkową strukturą i z dodatkowymi własnościami. Dowodzi się, że wszystkie struktury algebraiczne o takich własnościach dają się przedstawiać jako algebry procesów sieci Petriego.
The paper is concerned with algebras whose elements can be used to represent runs of a system, called processes. These algebras, called behaviour algebras, are categories with respect to a partial binary operation called seąuential composition, and they arę partial monoids with respect to a partial binary operation called parallel composition. They are characterized by axioms such that their elements...
The paper is devoted to characterizing hybrid systems by specifying their possible runs, called processes, where each process is represented by a pomset in an intrinsic, global time independent way and can possibly be obtained by composing seąuentially and in parallel other processes.
The paper contributes with a concept of process viewed as a model of a run of a phenomenon (discrete, continuous, or of a mixed type), with operations allowing to define complex processes in terms of their components, and with the idea of using the formal tools thus obtained to define the behaviours of concurrent systems. A process may have an initial state (a source), a final state (a target), or...
The paper contributes with a concept of process viewed as a model of a run of a system (discrete, continuous, or of a mixed type), with operations allowing to define complex processes in terms of their components, and with the idea of using the formal tools thus obtained to define the behavionrs of concurrent systems.A process may have an initial state (a source), a final state (a target), or both...
In the paper a model of action is described that is universal in the sense that it may serve to represent actions of any kind: discrete, continuous, or partially discrete and partially continuous. The model is founded on the assumption that an action is executed in a universe of objects. It describes how the possible executions change the situation of involved objects. It exploits the fact that executions...
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