Browsing Informática by Issue Date
Now showing items 21-40 of 497
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Presentation
Pumps Systems of Membranes
(Fénix Editora, 2004)The reactivity of the living cells provides the real complexity of biological systems. This paper presents a reactive P ...
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A Note on P Systems with Activators
(Fénix Editora, 2004)The usual assumption in P systems behavior is that of maximal parallelism, however in living cells it is not the case ...
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Simulating the Fredkin Gate with Energy-Based P Systems
(Fénix Editora, 2004)Reversibility plays a fundamental role when the possibility to per- form computations with minimal energy dissipation is ...
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Simulation of Mobile Ambients by P Systems. Part 2
(Fénix Editora, 2004)Ambient calculus is a theory which deals with mobile computing and computation and encompasses such notions as mobile ...
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Presentation
P Systems with Active Membranes and Separation Rules
(Fénix Editora, 2004)The P systems are a class of distributed parallel computing devices of a biochemical type. In this paper, a new de¯nition ...
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Presentation
About P Systems with Symport/Antiport
(Fénix Editora, 2004)It is proved that four membranes su±ce to P systems with minimal symport/antiport to generate all recursively enumerable ...
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On the Power of Deterministic EC P Systems
(Fénix Editora, 2004)It is commonly believed that a signi¯cant part of the computational power of membrane systems comes from their inherent ...
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Further Open Problems in Membrane Computing
(Fénix Editora, 2004)A series of open problems and research topics in membrane com- puting are pointed out, most of them suggested by recent ...
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P Systems with Active Membranes and Two Polarizations
(Fénix Editora, 2004)P systems with active membranes using only two electrical charges and only rules of types (a) and (c) assigned to at most ...
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Presentation
Sequential P Systems with Unit Rules and Energy Assigned to Membranes
(Fénix Editora, 2004)We introduce a new variant of membrane systems where the rules are directly assigned to membranes (and not to the regions ...
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P Systems with Antiport Rules for Evolution Rules
(Fénix Editora, 2004)We investigate a variant of evolution-communication P systems where the computation is performed in two substeps. First, ...
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(Ultimately Confluent) Parallel Multiset-Rewriting Systems with Context
(Fénix Editora, 2004)The aim of this paper is to study the power of parallel multiset- rewriting systems with permitting context (or P systems ...
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Presentation
Membrane Operations in P Systems with Active Membranes
(Fénix Editora, 2004)In this paper we de¯ne a general class of P systems covering some biological operations with membranes, including evolution, ...
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Presentation
Cell Communication in Tissue P Systems and Cell Division in Population P Systems
(Fénix Editora, 2004)Two classes of tissue P systems based on evolution communication rules are introduced, some results are proved, but many ...
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Presentation
Membrane Kauffman Networks
(Fénix Editora, 2004)A formalization of Kauffman Boolean Networks in terms of P systems is suggested along two lines: by means of register machines and directly by means of membranes with receptors.
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Presentation
A Tissue P System and a DNA Microfluidic Device for Solving the Shortest Common Superstring Problem
(Fénix Editora, 2004)This paper describes a tissue P system for solving the Shortest Common Superstring Problem in linear time. This tissue P ...
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Further Remarks on P Systems with Active Membranes, Separation, Merging, and Release Rules
(Fénix Editora, 2004)The P systems are a class of distributed parallel computing devices of a biochemical type. In this note, we show that by ...
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Presentation
P Systems with Active Membranes and Without Polarizations
(Fénix Editora, 2004)P systems with active membranes but without using electrical charges (polarizations) are shown to be complete for generating ...
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On P Systems with Promoters/Inhibitors
(Fénix Editora, 2004)This article shows how the computational universality can be reached by using P systems with object rewriting context-free ...
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Christiansen Grammar for Some P Systems
(Fénix Editora, 2005)The main goal of this work is to formally describe P systems. This is a necessary step to subsequently apply Christiansen ...