Utilización de criterios bioclimáticos y florísticos en la subdivisión biogeográfica del sector subbético (provincia Bética)

Utilización de criterios bioclimáticos yflorísticos en la subdivisión biogeo gráfica del sector subbético (provincia bética, España). Se han estudiado los distintos subsectores reconocidos hasta el momento del sector Subbético: Subbético-Maginense, Cazorlense, Alcaracense y Subbético-Murciano. Atendiendo al régimen de precipitaciones, se han observado diferencias significativas tanto en las precipitaciones anuales, como en su distribución estacional. En los tres primeros subsectores predominan las de carácter invernal; en el Subbético-Murciano las primaverales-otoñales, con mayor incidencia de las de verano. Asimismo, se han analizado los taxones característicos de cada subsector. Del análisis del conjunto de los datos, se ha detectado una gran afinidad entre los subsectores Cazorlense y Alcaracense considerando este último una variante fría del anterior, por lo que se propone la fusión de ambos en un nuevo subsector Alcaracino-Cazorlense. El subsector Subbético-Maginense, con un alto grado de singularidad, presenta mayor influencia de los sectores béticos colindantes. El subsector Subbético-Murciano engloba los territorios más continentales y de mayor influencia iberolevantina

Estilo y estructura del imaginario científico de Jorge Wagensberg: semántica y entramado léxico

Este artículo viene a ser la segunda parte de nuestro estudio “La construcción lingüística de un imaginario científico”, y trata sobre los mecanismos y recursos lingüísticos más relevantes de la reciente obra científico-divulgativa del físico Jorge Wagensberg, El gozo intelectual. La determinación e interpretación de estructuras y la valoración de rasgos estilísticos peculiares, como las interrogaciones y los enunciados de carácter creativo, confirman una forma de hacer bien diferenciada en lo que respecta a la Teoría y a la Práctica. Los títulos pertenecientes a los grandes bloques de la Práctica aseguran tensión y diversidad conceptual, mientras que los títulos de los distintos capítulos se agrupan por caracteres comunes, según paradigmas temáticos, focalizaciones culturales y patrones humorísticos. La revisión del índice de conceptos nos permite diseñar una aplicación de todos aquellos términos que clarifican y ponen de manifiesto la potencia de los atractores semánticos que asientan las ideas del imaginario científico de Wagensberg.This paper further develops a previous study entitled “Linguistic construction of a scientific imagery” about Wagensberg’s scientific and literary work, and it deals with the most outstanding mechanisms and linguistic resources of his recently-published scientific and divulgative work, The Intellectual Joy. The study and interpretation of structures, as well as the evaluation of particular stylistic features, such as questions and creative statements, demonstrate very different characteristics in both parts of the book, the Theory and the Practice. The titles corresponding to the broad sections in Practice, guarantee tension and conceptual diversity, whereas the titles of the different chapters can be grouped in common characters, according to thematic paradigms, cultural focalizations and humorous patterns. A final review of the index of concepts shows the list of terms that clarify and reveal the power of semantic attractors which consolidate the ideas of Wagensberg’s scientific imagery

Transforming Gaussian correlations. Applications to generating long-range power-law correlated time series with arbitrary distribution

Política de acceso abierto tomada de: https://v2.sherpa.ac.uk/id/publication/9866?template=romeoThe observable outputs of many complex dynamical systems consist in time series exhibiting autocorrelation functions of great diversity of behaviors, including long-range power-law autocorre- lation functions, as a signature of interactions operating at many temporal or spatial scales. Often, numerical algorithms able to generate correlated noises reproducing the properties of real time se- ries are used to study and characterize such systems. Typically, those algorithms produce Gaussian time series. However, real, experimentally observed time series are often non-Gaussian, and may follow distributions with a diversity of behaviors concerning the support, the symmetry or the tail properties. Given a correlated Gaussian time series, it is always possible to transform it into a time series with a different distribution, but the question is how this transformation affects the behavior of the autocorrelation function. Here, we study analytically and numerically how the Pearson’s cor- relation of two Gaussian variables changes when the variables are transformed to follow a different destination distribution. Specifically, we consider bounded and unbounded distributions, symmetric and non-symmetric distributions, and distributions with different tail properties, from decays faster than exponential to heavy tail cases including power-laws, and we find how these properties affect the correlation of the final variables. We extend these results to Gaussian time series which are transformed to have a different marginal distribution, and show how the autocorrelation function of the final non-Gaussian time series depends on the Gaussian correlations and on the final marginal distribution.Consejerı́a de Conocimiento, Investigación y Universidad, Junta de Andalucía and European Regional Development Fund (ERDF), ref. SOMM17/6105/UGR and FQM-362

Relationships between importance measures and redundancy in systems with dependent components

The paper shows the connections between some importance indices for the components in an engineering coherent system and the performance of the system obtained when a redundancy mechanism is applied to a specific component. A copula approach is used to model the dependency among the components. This approach includes the popular case of independent components. Under some assumptions, it is proved that if component i is more important than component j, then the system obtained by applying a redundancy procedure to the ith component is better, under different stochastic criteria, than that obtained with the jth component. These results can be applied to several redundancy mechanisms. A new importance index is defined to study active redundancies. Some illustrative examples are provided

Covariability of seasonal temperature and precipitation over the Iberian Peninsula in high-resolution regional climate simulations (1001–2099)

Precipitation and surface temperature are interdependent variables, both as a response to atmospheric dynamics and due to intrinsic thermodynamic relationships and feedbacks between them. This study analyzes the covariability of seasonal temperature (T) and precipitation (P) across the Iberian Peninsula (IP) using regional climate paleosimulations for the period 1001–1990, driven by reconstructions of external forcings. Future climate (1990–2099) was simulated according to SRES scenarios A2 and B2. These simulations enable exploring, at high spatial resolution, robust and physically consistent relationships.This study was supported by the Spanish government and the Fondo Europeo de Desarrollo Regional (FEDER) through the project SPEQ-TRES (CGL2011-29672-C02-02). J.P. Montávez also acknowledges the financial support from Fundacion Seneca (Ref 19640/EE/14)

Una nueva subespecie de Moricandia moricandioides (Boiss.) Heywood (Brassicaceae).

A new subspecies of Moricandia moricandioides (Boiss.) Heywood (Brassicaceae). Palabras clave: Moricandia, Brassicaceae, Murcia, España.Key words: Moricandia, Brassicaceae, Murcia, Spain