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*Alfonso* *Ortega*

"... Synthetic jets are generated by an equivalent inflow and outflow of fluid into a system. Even though such a jet creates no net mass flux, net positive momentum can be produced because the outflow momentum during the first half of the cycle is contained primarily in a vigorous vortex pair created at ..."

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Synthetic jets are generated by an equivalent inflow and outflow of fluid into a system. Even though such a jet creates no net mass flux, net positive momentum can be produced because the outflow momentum during the first half of the cycle is contained primarily in a vigorous vortex pair created at the orifice edges whereas in the backstroke, the backflow momentum is weaker, despite the fact that mass is conserved. As a consequence of this, the approach can be potentially utilized for the impingement of a cooling fluid over a heated surface. In the present study, a canonical geometry is presented, in order to study the flow and heat transfer of a purely oscillatory jet that is not influenced by the manner in which it is produced. The unsteady Navier-Stokes equations and the convection-diffusion equation were solved using a fully unsteady, two-dimensional finite volume approach in order to capture the complex time dependent flow field. A detailed analysis was performed on the correlation between the complex velocity field and the observed wall heat transfer. A fundamental frequency, in addition to the jet forcing frequency, was found, and was attributed to the coalescence of consecutive vortex pairs. In some instances, this vortex pairing can lead to zones of low heat transfer. Two point correlations showed that the Nusselt number Nu, showed stronger correlation with the vertical velocity v although the spatial-temporal dependencies are not yet fully understood. It was found that the Reynolds number and the Strouhal number, are sufficient to successfully scale the problem at larger dimensions and this is presently being exploited in order to design validation experiments using jets large enough to allow careful local measurements.

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Marina de la Cruz Echeandía, *Alfonso* *Ortega* de la Puente

"... To successfully apply evolutionary algorithms to the solution of increasingly complex problems we must develop effective techniques for evolving solutions in the form of interacting coadapted subcomponents. In this paper we present an architecture which involves cooperative coevolution of two subcom ..."

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To successfully apply evolutionary algorithms to the solution of increasingly complex problems we must develop effective techniques for evolving solutions in the form of interacting coadapted subcomponents. In this paper we present an architecture which involves cooperative coevolution of two subcomponents: a genetic program and an evolution strategy. As main difference with work previously done, our genetic program evolves straight line programs representing functional expressions, instead of tree structures. The evolution strategy searches for good values for the numerical terminal symbols used by those expressions. Experimentation has been performed over symbolic regression problem instances and the obtained results have been compared with those obtained by means of Genetic Programming strategies without coevolution. The results show that our coevolutionary architecture with straight line programs is capable to obtain better quality individuals than traditional genetic programming using the same amount of computational effort. 1

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Cellular Automata equivalent to D0L Systems Abdel Latif Abu Dalhoum, *Alfonso* *Ortega*

"... Abstract:- This paper describes an algorithm for the construction of a certain one-dimensional cellular automaton equivalent to a given D0L system. A cellular automaton is considered equivalent to an L-system if both generates the same words in the same order. Our cellular automata produce the same ..."

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Abstract:- This paper describes an algorithm for the construction of a certain one-dimensional cellular automaton equivalent to a given D0L system. A cellular automaton is considered equivalent to an L-system if both generates the same words in the same order. Our cellular automata produce the same words and in the same order as the given D0L system for a finite number of derivations. There is no constraint to the D0L system considered, so the method is a general algorithm and can be used as a proof for an equivalence theorem. Key-Words:- Cellular automata, Lindenmayer systems, parallel derivation grammar, theoretical computer science, formal languages

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Christiansen Grammar for Some P Systems *Alfonso* *Ortega* de la Puente, Rafael Núñez Hervás,

"... Summary. The main goal of this work is to formally describe P systems. This is a necessary step to subsequently apply Christiansen grammar evolution (an evolutionary tool developed by the authors) for automatic designing of P systems. Their complex structure suggests us two decisions: to restrict ou ..."

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Summary. The main goal of this work is to formally describe P systems. This is a necessary step to subsequently apply Christiansen grammar evolution (an evolutionary tool developed by the authors) for automatic designing of P systems. Their complex structure suggests us two decisions: to restrict our study to a subset of P systems that ease the representation while keeping a suitable complexity and to select a powerful enough formal tool. Our work is restricted to a kind of P system that can simulate any logical function by means of delay symbols and two mobile catalysts. Like in general P systems, some components of these “logical ” P systems depend on other components (for example, the number of axioms and regions and the set of possible indexes for the symbols in their rules depend on the membrane structure). So, a formal representation able to handle context dependent constructions is needed. Our work uses Christiansen grammars to describe P systems. 1

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Juan *Ortega* Valiente

"... educational approach based on the use of wiki platforms in university environments ..."

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educational approach based on the use of wiki platforms in university environments

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Math. & Sci. hum. ~ Mathematics and Social Sciences (44 e année, n ° 174, 2006(2), p. 5-24) AZAR GAME IN THE BOOK OF THE DICE OF *ALFONSO* X THE LEARNED. ITS RELATION WITH THE HAZARD GAMES

"... RÉSUMÉ – Le jeu appelé « Azar » dans le livre des dés d’Alphonse X le savant. Ses rapports avec les jeux de hasard de Montmort, Cotton, Hoyle, De Moivre et Jacob Bernoulli Un jeu dénommé “Azar ” est présenté dans la deuxième partie du livre de jeux « Le livre des échecs, dés et tables » d’Alphonse X ..."

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RÉSUMÉ – Le jeu appelé « Azar » dans le livre des dés d’Alphonse X le savant. Ses rapports avec les jeux de hasard de Montmort, Cotton, Hoyle, De Moivre et Jacob Bernoulli Un jeu dénommé “Azar ” est présenté dans la deuxième partie du livre de jeux « Le livre des échecs, dés et tables » d’Alphonse X Le Sage (1221-1284). Les règles de ce jeu de Hasard dépendent de deux événements appelés « re-hasard » et « hasard ». La probabilité de gagner dans ce jeu Hasard implique un événement dont la probabilité dépend d’un nombre indéterminé de lancements de trois dés. Nous démontrons ici que cette probabilité est proche de 50 %. Nous avons associé ce jeu de Hasard avec d’autres jeux, tels le jeu de Hasard de De Montmort, Cotton, Hoyle et De Moivre, et aussi avec le jeu de Cinq et Neuf de J. Bernoulli. Enfin, nous montrons que le premier jeu de Hasard de De Moivre est le jeu populaire du Craps.

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"... josé leonardo alfonso segura optimisation of monitoring networks for water systems information theory, value of information and public participation ..."

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josé leonardo

*alfonso*segura optimisation of monitoring networks for water systems information theory, value of information and public participation### The Misery and Splendour of Translation: a Classic in Translation Studies

"... In 1937, José Ortega y Gasset (1883-1955) wrote The Misery and Splendour of Translation, an essay that contains his views about translation. A cursory review of translation literature is enough to appreciate the wide-spread personal mark that Ortega –who is considered ‘the most influential figure in ..."

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In 1937, José

*Ortega*y Gasset (1883-1955) wrote The Misery and Splendour of Translation, an essay that contains his views about translation. A cursory review of translation literature is enough to appreciate the wide-spread personal mark that*Ortega*–who is considered ‘the most influential figure