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Mostrando ítems 1-10 de 20
Ponencia
Networks of Cells and Petri Nets
(Fénix Editora, 2007)
We introduce a new class of P systems, called networks of cells, with rules allowing several cells to simultaneously interact with each other in order to produce some new objects inside some other output cells. We define ...
Ponencia
VisualTissue: A Friendly Tool to Study Tissue P Systems Solutions for Graph Problems
(Fénix Editora, 2007)
P systems can be classi ed in two main groups: P systems with the membrane structure described by a tree, and tissue P systems with the membranes placed in the nodes of an arbitrary graph. NP-complete problems have been ...
Ponencia
On Two Families of Multiset Tree Automata
(Fénix Editora, 2007)
The relation between the membrane structures of P systems and an extension of tree automata which introduces multisets in the transition function has been proposed in previous works. Here we propose two features of tree ...
Ponencia
Polarizationless P Systems with Active Membranes Working in the Minimally Parallel Mode
(Fénix Editora, 2007)
We investigate the computing power and the efficiency of P systems with active membranes without polarizations, working in the minimally parallel mode. We prove that such systems are computationally complete and able to ...
Ponencia
Extended Spiking Neural P systems with Excitatory and Inhibitory Astrocytes
(Fénix Editora, 2007)
We investigate an extended model of spiking neural P systems incorporating astrocytes and their excitatory or inhibitory influence on axons between neurons. Using very restricted variants of extended spiking neural P ...
Ponencia
Magnetotactic Bacteria and Their Significance for P Systems and Nanoactuators
(Fénix Editora, 2007)
In the framework of the dialog between P systems and Microbiology, in this paper we focus on the magnetotactic behavior of magnetotactic bacteria, namely the orientation along the Earth’s geomagnetic field lines. Magnetic ...
Ponencia
Partial Versus Total Halting in P Systems
(Fénix Editora, 2007)
We consider a new variant of the halting condition in P systems, i.e., a computation in a P system is already called halting if not for all membranes a rule is applicable anymore at the same time, whereas usually a ...
Ponencia
Information Theory over Multisets
(Fénix Editora, 2007)
Starting from Shannon theory of information, we present the case of producing information in the form of multisets, and encoding information using multisets. We compute the entropy of a multiset information source by ...
Ponencia
Membrane Computing Schema Based on String Insertions
(Fénix Editora, 2007)
In this note we introduce the notion of a membrane computing schema for string objects. We propose a computing schema for a membrane network (i.e., tissue-like membrane system) where each membrane performs unique type ...
Ponencia
Some Mathematical Methods and Tools for an Analysis of Harmony-Seeking Computations
(Fénix Editora, 2007)
A general review of some topic concepts and methods of membrane computing, which can be useful in an analysis of harmony-seeking computations is presented. Then an application of a certain particular method of membrane ...