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Mostrando ítems 111-120 de 177
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On Modelling Ion Fluxes Across Biological Membranes with P Systems
(Fénix Editora, 2005)
In this report we address the challenge of using P systems to integrate at the whole cell level both active and passive transport of different ions, done by different types of membrane transport proteins which work ...
Ponencia
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Several Applications of Spiking Neural P Systems
(Fénix Editora, 2007)
In this paper we investigate some applications of Spiking Neural P Systems regarding their capability to solve some classical computer science problems. In this respect it is studied the versatility of such systems to ...
Ponencia
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Spiking Neural P Systems with Extended Rules
(Fénix Editora, 2006)
We consider spiking neural P systems with spiking rules allowed to introduce zero, one, or more spikes at the same time. The computing power of the obtained systems is investigated, when considering them as number ...
Ponencia
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Two Universality Results for (Mem)Brane Systems
(Fénix Editora, 2006)
We prove that P systems with mate and drip operations and using at most five membranes during any step of a computation are universal. This improves a recent similar result from, where eleven membranes are used. The proof ...
Ponencia
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Discrete Solution of Differential Equations by P Metabolic Algorithm
(Fénix Editora, 2006)
The relationships existing between MP graphs, metabolic P systems, and ODE systems are investigated. Formal results show that every MP system, once derived by its MP graph, results in an ODE system whose solution equals, ...
Ponencia
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P Systems with Minimal Insertion and Deletion
(Fénix Editora, 2009)
In this paper we consider insertion-deletion P systems with priority of deletion over the insertion.We show that such systems with one symbol context-free insertion and deletion rules are able to generate PsRE. If one-symbol ...
Ponencia
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Weak Metrics on Configurations of a P System
(Fénix Editora, 2004)
The evolution of a P system generates a tree of computation po- tentially in¯nite where it is very difficult to set the degree of closeness between two configurations. The problem is specially hard if we want to quantify ...
Ponencia
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A Case Study in (Mem)Brane Computation: Generating {n2 | n 1}
(Fénix Editora, 2006)
The aim of this paper is to start an investigation and a comparison of the expressiveness of the two most relevant formalisms inspired by membranes interactions, namely, P systems and Brane Calculi. We compare the two ...
Ponencia
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Spiking Neural P Systems – A Natural Model for Sorting Networks
(Fénix Editora, 2008)
This paper proposes two simulations of sorting networks with spiking neural P systems. A comparison between different models is also made.
Ponencia
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Solving Numerical NP-complete Problems by Spiking Neural P Systems with Pre–computed Resources
(Fénix Editora, 2008)
Recently we have considered the possibility of using spiking neural P systems for solving computationally hard problems, under the assumption that some (possibly exponentially large) pre-computed resources are given in ...