نتایج جستجو برای: petri nets
تعداد نتایج: 25209 فیلتر نتایج به سال:
Algebraic Petri nets is a well suited formalism to represent the behavior of concurrent and distributed systems by handling complex data. For the analysis of systems modelled in Algebraic Petri nets, model checking and testing are used commonly. Petri nets slicing is getting an attention recently to improve the analysis of systems modelled in Petri nets or Algebraic Petri nets. This work is ori...
in this paper, a formal model for antivirus update agent system is presented based on mobile agent technology and predicate/transition petri nets. the mobile agent system contains two mobile agents called dca and una. it sends out agents to update antivirus on client computers in a network. each agent takes on a specified responsibility. first, dca roams through the network and check the last d...
This paper introduces a new method of empowering Logical Petri Nets (LPN) and Fuzzy Logical Petri Nets (FLPN) [1] using multiple logic. In this paper we proposed a Multi-Logical Petri Nets (MLPN) and Multi-Logical Fuzzy Petri Nets (MLFPN) based on Logical Petri Nets (LPN) and Fuzzy Logical Petri Nets (FLPN). Here we have showed that, how multiple logic is implemented in MLPN and MLFPN. The prop...
Time and Petri nets-do they not contradict each other? While time determines the occurrences of events in a system, classic Petri nets consider their causal relationships and represent events as a concurrent system. At first, these two appear to be at odds with each other, but taking a closer look at how time and causality are intertwined, one realizes that time actually enriches Petri nets. Th...
Petri nets are formal models of systems which exhibit concurrent activities. As formal models, Petri nets are bipartite directed graphs, in which the two types of vertices represent, in a very general sense, conditions and events. In order to study performance aspects of systems modeled by Petri nets, the durations of modeled activities must also be taken into account. This can be done in diffe...
Grid is one of the most e ective new paradigms in large scale distributed computing. Only recently Petri nets have been adopted as a formal modeling framework for describing the speci c aspects of the Grid. In this paper we describe a Grid tool for High Energy Physics data analysis, and we show how modeling its architecture with nets-withinnets has led us to identify and solve a number of defec...
Object based Petri nets are becoming increasingly popular in many fields of computer science. The possibility to model real-world objects as separate Petri nets supports the need for modular design of complex systems. So far object net approaches have been based on the presumption that the object nets’ structure remains unchanged in all processes. This paper sheds some light on possible extensi...
Petri nets are frequently used for modeling and analysis of discrete event systems. Similar to other modeling formalisms for discrete systems, it suffers from state explosion. Fluidification can be used to overcome this difficulty yielding fluid approximation of original Petri nets in the sense of behaviours and properties. This models are called continuous Petri nets. In this work, stochastic ...
This is a tutorial paper on Petri nets. Petri nets, as a graphical and mathematical tool, provide a uniform environment for modelling, formal analysis, and design of discrete event systems. The main objective of this paper is to introduce the fundamental concepts of Petri nets to the researchers and practitioners, both from academia and industry, who are involved in the work in the areas of mod...
We examine both the modeling power of normal and sinkless Petri nets and the computational complexities of various classical decision problems with respect to these two classes. We argue that although neither normal nor sinkless Petri nets are strictly more powerful than persistent Petri nets, they nonetheless are both capable of modeling a more interesting class of problems. On the other hand,...
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