VALENCIA CABRERA , Luis

** Introducción Desde el principio de los tiempos, el Hombre se ha visto abocado a resolver problemas. En un principio problemas muy concretos, como huir de un peligro inminente, buscar un alimento en un momento dado o resguardarse del frío para continuar ejerciendo sus funciones vitales hasta nuevo aviso. Pero para avanzar en ello, es...

Tissue P systems constitute a well-known class of comput- ing models in the research field of membrane computing. Inspired by the information exchange among cells and with the environment, they have attracted much attention over the last decade, with many interest ing variants emerging along the years. One of such variants, the so...

DP is the class of problems that are the differences between two languages from NP. Most difficult problems from DP are called DP-complete problems, that can be seen as the conjunction of an NP-complete problem and a co-NP-complete problem. It is easy to see that the problem P vs NP is equivalent to the problem P vs DP, and therefore...

Major efforts have been made along the last decade on the modelling and simulation of phenomena within areas such as Biochemistry, Ecology or Robotics, providing solutions for relevant problems (signalling pathways, population dynamics or logic gene networks, or robot control and planning, among others). However, other areas initially explored...

Optimization problems have always been, and nowadays even more than ever, a subject of major concern, given their in uence in the solution of very relevant daily matters (i.e., worldwide packaging and transport, involving problems like KNAPSACK or TSP). Many classical meta-heuristics have been proposed to solve these kinds of problems, from...

In this work we present a P system based model of the ecosystem dynamics of plant communities. It is applied to four National Hunting Reservoirs in Catalan Pyrenees (Spain). In previous works several natural high- mountain- ecosystems and population dynamics were modeled, but in those works grass was considered unlimited and changes in plant...

The potential and adaptive flexibility of population dynamic P-systems (PDP) to study population dynamics suggests that they may be suitable for modelling complex fluvial ecosystems, characterized by a composition of dynamic habitats with many variables that interact simultaneously. Using as a model a reservoir occupied by the zebra mussel...

Cell division is a process that produces two or more cells from one cell by replicating the original chromosomes so that each daughter cell gets a copy of them. Membrane fission is a process by which a biological membrane is split into two new ones in suchamanner that the contents of the initial membrane get distributedor separated among the...

From the creation of the field of Membrane Computing in 1998, several research lines havebeen opened. On the one hand, theoretical questions like the computational power and thecomputational efficiency of P systems have been studied. In this sense, several techniquesto demonstrate the ability of these systems to provide solutions to...

Virus Machines are a computational paradigm inspired by the manner in which viruses replicate and transmit from one host cell to another. This paradigm provides non-deterministic sequential devices. Non-restricted virus machines are unbounded virus machines, in the sense that no restriction on the number of hosts, the number of instructions and...