El Cinca bajo teñido de sangre. Los «curetas» de Monzón y los Gascó de Sena camino de la glorificación martirial cristiana. [Reseña]

Reseña de: Jacinto PERAIRE FERRER, El Cinca bajo teñido de sangre. Los «curetas» de Monzón y los Gascó de Sena camino de la glorificación martirial cristiana, BAC, Madrid 2003, 201 pp

Un adolescente en la retaguardia. Memoria de la guerra civil (1936-1939). [Reseña]

Reseña de: Miguel GIL IMIRIZALDU, Un adolescente en la retaguardia. Memoria de la guerra civil (1936-1939), Ediciones Encuentro, Madrid 2006, 213 pp

El martirio y la teología martirial de San Cipriano

En el siglo III San Cipriano de Cartago desempeñó un importantísimo papel en la Iglesia. Ello ha incitado a historiadores y teólogos a estudiar su personalidad, su doctrina y su labor pastoral. El hecho afortunado, poco frecuente en los escritores de estos primeros siglos del cristianismo, de conservarse casi íntegra su producción literaria, ha permitido realizar estos estudios con profundidad y rigor científico. Podemos decir que prácticamente todos los aspectos de su vida y obras han sido estudiados. Entre ellos el tema del martirio, que tanta importancia tuvo, sobre todo en los escritores de estos difíciles momentos de las persecuciones, también ha sido tratado. Hummel y Capmany 1 expusieron el combate espiritual que supone el martirio y la espiritualidad martirial, desde unos puntos de vista parciales. Lo que nosotros hemos pretendido en esta tesis es exponer la teología martirial de San Cipriano

Steady State Detection of Chemical Reaction Networks Using a Simplified Analytical Method

Chemical reaction networks (CRNs) are susceptible to mathematical modelling. The dynamic behavior of CRNs can be investigated by solving the polynomial equations derived from its structure. However, simple CRN give rise to non-linear polynomials that are difficult to resolve. Here we propose a procedure to locate the steady states of CRNs from a formula derived through algebraic geometry methods. We have applied this procedure to define the steady states of a classic CRN that exhibits instability, and to a model of programmed cell death

Switcher-random-walks: a cognitive-inspired mechanism for network exploration

Semantic memory is the subsystem of human memory that stores knowledge of concepts or meanings, as opposed to life specific experiences. The organization of concepts within semantic memory can be understood as a semantic network, where the concepts (nodes) are associated (linked) to others depending on perceptions, similarities, etc. Lexical access is the complementary part of this system and allows the retrieval of such organized knowledge. While conceptual information is stored under certain underlying organization (and thus gives rise to a specific topology), it is crucial to have an accurate access to any of the information units, e.g. the concepts, for efficiently retrieving semantic information for real-time needings. An example of an information retrieval process occurs in verbal fluency tasks, and it is known to involve two different mechanisms: -clustering-, or generating words within a subcategory, and, when a subcategory is exhausted, -switching- to a new subcategory. We extended this approach to random-walking on a network (clustering) in combination to jumping (switching) to any node with certain probability and derived its analytical expression based on Markov chains. Results show that this dual mechanism contributes to optimize the exploration of different network models in terms of the mean first passage time. Additionally, this cognitive inspired dual mechanism opens a new framework to better understand and evaluate exploration, propagation and transport phenomena in other complex systems where switching-like phenomena are feasible.Comment: 9 pages, 3 figures. Accepted in "International Journal of Bifurcations and Chaos": Special issue on "Modelling and Computation on Complex Networks