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Mostrando ítems 31-40 de 177
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On Very Simple P Colonies
(Fénix Editora, 2009)
We study two very simple variants of P colonies: systems with only one object inside the cells, and systems with insertion-deletion programs, so called P colonies with senders and consumers. We show that both of these ...
Ponencia
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Handling Markov Chains with Membrane Computing
(Fénix Editora, 2006)
In this paper we approach the problem of computing the n–th power of the transition matrix of an arbitrary Markov chain through membrane computing. The proposed solution is described in a semi–uniform way in the framework ...
Ponencia
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Recognizing Membrane Structures with Tree Automata
(Fénix Editora, 2005)
In this work we propose a new model of tree automata based on multisets of states and symbols linked to the finite control. This new model accepts a set of trees with symmetries between their internal nodes. We name this ...
Ponencia
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A Short Note on Reversibility in P Systems
(Fénix Editora, 2009)
Membrane computing is a formal framework of distributed parallel comput- ing. In this paper we study the reversibility and maximal parallelism of P systems from the computability point of view. The notions of reversible ...
Ponencia
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A P System Modeling an Ecosystem Related to the Bearded Vulture
(Fénix Editora, 2008)
The Bearded Vulture is one of the rarest raptors in Europe and it is an endangered species. In this paper, we present a model of an ecosystem related with the Bearded Vulture which is located in the Catalan Pyrenees, by ...
Ponencia
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Tissue P Systems with Cell Division
(Fénix Editora, 2004)
In tissue P systems several cells (elementary membranes) commu- nicate through symport/antiport rules, thus carrying out a computation. We add to such systems the basic feature of (cell) P systems with active membranes { ...
Ponencia
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New Normal Forms for Spiking Neural P Systems
(Fénix Editora, 2009)
We consider a natural restriction in the architecture of a spiking neural P system, namely, to have neurons of a small number of types (i.e., using a small number of sets of rules), and we prove that three types of neurons ...
Ponencia
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Multiset Random Context Grammars, Checkers, and Transducers
(Fénix Editora, 2006)
We introduce a general model of random context multiset grammars as well as the concept of multiset random context checkers and transducers. Our main results show how recursively enumerable sets of finite multisets can ...
Ponencia
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Spiking Neural P Systems with Anti-Spikes
(Fénix Editora, 2009)
Besides usual spikes employed in spiking neural P systems, we consider "anti-spikes", which participate in spiking and forgetting rules, but also annihilate spikes when meeting in the same neuron. This simple extension ...
Ponencia
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Solving the Partition Problem by Using Tissue-like P Systems with Cell Division
(Fénix Editora, 2008)
Tissue-like P systems with cell division is a computing model in the framework of Membrane Computing that shares with the spiking neural P system model a similar biological inspiration. Namely, both models are based on ...