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Mostrando ítems 11-20 de 177
Ponencia
Event-Related Outputs of Computations in P Systems
(Fénix Editora, 2005)
We briefly investigate the idea to consider as the result of a computation in a P system the number of steps elapsed between two events produced during the computation. Specifically, we first consider the case when the ...
Ponencia
WebPS: A Web-based P System Simulator with Query Facilities
(Fénix Editora, 2005)
In this paper we present an open-source web-enabled simulator for P sys- tems. We use CLIPS embedded in C, and make the simulator available as a web application, complemented by a query language to specify the results.
Ponencia
Computing Backwards with P Systems
(Fénix Editora, 2009)
Searching all the configurations C′ such that produce a given configuration C, or, in other words, computing backwards in Membrane Computing is an extremely hard task. The current approximations are based in heavy hand-made ...
Ponencia
Research Topics Arising from the (Planned) P Systems Implementation Experiment in Technion
(Fénix Editora, 2008)
We formulate here a few technical (mathematical) open problems related to the in vitro bio-chemical experiment planned in Technion for computing the Fibonacci sequence in terms of P systems. So-called local-loop-free P ...
Ponencia
Notch Signalling and Cellular Fate Choices: A Short Review
(Fénix Editora, 2009)
During mammalian central nervous system (CNS) development, an enormous variety of cell types are generated. This cell diversity is due in part to asymmetrical cell division. Asymmetrical segregation of Numb, a cell-determinant ...
Ponencia
Computational Complexity of Simple P Systems
(Fénix Editora, 2008)
We introduce a new class of membrane systems called simple P systems, and study its computational complexity using the classical theory. We start by presenting the knapsack problem and analyzing its space and time ...
Ponencia
The Discovery of Initial Fluxes of Metabolic P Systems
(Fénix Editora, 2009)
A central issue in systems biology is the study of efficient methods to infer fluxes of biological reactions starting from experimental data. Among the different techniques proposed in the last years, in the theory of ...
Ponencia
Computing Using Signals: From Cells to P Systems
(Fénix Editora, 2004)
In cell biology one of the fundamental topic is the study of how biological signals are managed by cells. Signals can arise from inside the cell or from the external environment and the correct answer to certain signals ...
Ponencia
Ponencia
Fractals and P Systems
(Fénix Editora, 2006)
In this paper we show that the massive parallelism, the synchronous appli- cation of the rules, and the discrete nature of their computation, among other features, lead us to consider P systems as natural tools for dealing ...