By Gabriel Ciobanu, Mario J. Pérez-Jiménez, Gheorghe Păun
Membrane computing is a department of common computing which investigates computing types abstracted from the constitution and functioning of residing cells and from their interactions in tissues or higher-order organic buildings. The versions thought of, referred to as membrane structures (P systems), are parallel, disbursed computing types, processing multisets of symbols in cell-like compartmental architectures. in lots of functions membrane platforms have significant merits – between those are their inherently discrete nature, parallelism, transparency, scalability and nondeterminism.
In committed chapters, best specialists clarify lots of the purposes of membrane computing said to this point, in biology, machine technological know-how, special effects and linguistics. The ebook additionally comprises specific experiences of the software program instruments used to simulate P systems.
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Extra resources for Applications of Membrane Computing
Technical Report 28/03, Rovira i Virgili University, Tarragona, 2003. 7. I. Ardelean: The Relevance of Biomembranes for P Systems. Fundamenta Informaticae, 49, 1–3 (2002), 35–43. 8. -P. Banˆ atre, A. Coutant, D. Le M´etayer: A Parallel Machine for Multiset Transformation and Its Programming Style. Future Generation Computer Systems, 4 (1988), 133–144. 9. -P. Banˆ atre, P. Fradet, D. Le M´etayer: Gamma and the Chemical Reaction Model: Fifteen Years After. In , 17–44. 10. F. Bernardini, M. Gheorghe: Population P Systems.
Specifically, we consider antiport rules of the form (i, x/y, j), where i, j are labels of cells (or at most one is zero, identifying the environment), and x, y are multisets of objects. This means that the multiset x is moved from i to j at the same time as the multiset y is moved from j to i. If one of the multisets x, y is empty, then we have, in fact, a symport rule. Therefore, the communication among cells is done either directly, in one step, or indirectly, through the environment: one cell throws some objects out and other cells can take these objects in the next step or later.
Note that the crossing of one membrane takes one time unit (it is supposed that the travelling membrane finds the shortest path from the region where it is created to the target region). , in the context of applications to linguistics, as well as in  and in other papers, but we do not enter into further details here. , proteins, DNA molecules, other large macromolecules), whose structure can be described by strings or more complex data, such as trees, arrays, etc. Also, from a mathematical point of view it is natural to consider P systems with string objects.