La función ejecutiva de actualización y el rendimiento en comprensión lectora y resolución de problemas

In this investigation, the capacity of the working memory (WM) updating executive function to predict individual differences in reading comprehension and problem solving was analyzed in 5th-graders of Primary Education. In addition, we examined whether this relation is direct or mediated by domain-general or domain-specific variables. For this purpose, a series of tasks was administered to assess fluid intelligence, WM information updating, arithmetic abilities, arithmetic problem solving, lexical processing, and reading comprehension in 49 students aged between 10 and 11 years. The results support the idea that updating is an important predictor of reading comprehension, beyond the influence of domainspecific skills and fluid intelligence. In the case of problem solving, our findings confirm that updating plays an important role although, perhaps due to task content, the relation seems to be mediated by fluid intelligence at this developmental stageEsta investigación analizó, en niños de 5º curso de Educación Primaria, la capacidad predictora de la función ejecutiva de actualización de la Memoria Operativa (MO) en las diferencias individuales en comprensión lectora y resolución de problemas aritméticos. Además, se estudió si esta relación es directa o está mediada por variables de dominio general o específico. Con este fin se administró un conjunto de pruebas que evalúan la inteligencia fluida, la actualización de la información en la MO, la competencia aritmética, la resolución de problemas aritméticos, el procesamiento léxico y la comprensión lectora a 49 alumnos con edades comprendidas entre los 10 y 11 años. Los resultados apoyan la idea que la actualización de la MO es un importante predictor de la comprensión lectora, más allá de la influencia de las habilidades de dominio específico y de la inteligencia fluida. En el caso de la resolución de problemas, nuestros hallazgos confirman que la actualización juega un papel importante aunque, en este momento evolutivo, quizá por el propio contenido de la tarea, la relación parece mediada por la inteligencia fluid

Experimental hybridization and reproductive isolation between two sympatric species of tephritid fruit flies in the Anastrepha fraterculus species group

Among tephritid fruit flies, hybridzation has been found to produce local adaptationand speciation, and in the case of pest species, induce behavioral and ecological alterations that can adversely impact efficient pest management. The fraterculus species group within Anastrepha (Diptera: Tephritidae), is a rapidly radiating aggregate, which includes cryptic species complexes, numerous sister species, and several pest species. Molecular studies have highlighted the possibility of introgression between A. fraterculus and A. obliqua. Reproductive isolation has been studied among morphotypes of the A. fraterculus species complex as a tool for species delimitation. Here we examined the existence and strength ofprezygotic and postzygotic isolation between sympatric populations of two closely related species within the highly derived fraterculus group (A. fraterculus and A. obliqua), coexisting in nature. Although adults of both species showed a strong tendency for assortative mating, a small proportion of hybrid pairings in both directions were observed. We also observed asymetric postzygotic isolation, with one hybrid cross displaying a strong reduction in fecundity and F1 egg fertility. Survival was greater for the progeny of homotypic and hybrid crosses in the maternal host. There was a marked female biased sex ratio distortion for both F1 hybrid adults. Hybridization between A. fraterculus and A. obliqua in nature may be difficult but possible; these two species display stronger reproductive isolation than all pairsof species previously examined in the A. fraterculus species complex. Asymetric postzygotic isolation is suggestive of Wolbachia mediated cytoplasmic incompatibilities that may be exploited in area-wide pest management.Fil: Rull Gabayet, Juan Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucuman. Planta Piloto de Procesos Industriales Microbiologicos; ArgentinaFil: Tadeo, Eduardo. Instituto de Ecología A. C. . Red de Manejo Biorracional de Plagas y Vectores; MéxicoFil: Lasa, Rodrigo. Instituto de Ecología A. C. . Red de Manejo Biorracional de Plagas y Vectores; MéxicoFil: Rodríguez, Christian L.. Instituto de Ecología A. C. . Red de Manejo Biorracional de Plagas y Vectores; MéxicoFil: Altuzar Molina, Alma. Instituto de Ecología A. C. . Red de Manejo Biorracional de Plagas y Vectores; MéxicoFil: Aluja, Martín. Instituto de Ecología A. C. . Red de Manejo Biorracional de Plagas y Vectores; Méxic

LpL^p-boundedness properties for the maximal operators for semigroups associated with Bessel and Laguerre operators

In this paper we prove that the generalized (in the sense of Caffarelli and Calder\'on) maximal operators associated with heat semigroups for Bessel and Laguerre operators are weak type (1,1). Our results include other known ones and our proofs are simpler than the ones for the known special cases.Comment: 8 page

Infrastructures for a more sustainable constructed environment. The conversion of the N340 roadway on the Costa Tropical of Granada (Spain)

The coexistence of nature and artifice in metropolitan contexts is currently an important issue with many possibilities to think about. From the perspective of a transport infrastructure project this reflection should facilitate a methodological evolution, aimed at creating a new technology that understands design as a combination between the demands of citizens, and the spatial offer of the place. This is the case of the N340 roadway along the coast of the Granada province, a territory with a population of about one hundred thousand people that doubles in the summer. Besides tourism, intensive agriculture is the basis of economic development. However, the lack of both rail connection and through the 'Autovía del Mediterráneo' has allowed today a space of more than 50 kilometers of coastline with very different conditions we might call "pre-tourist", without massive urbanization and with a considerable potential for change. This infrastructure is channeling all movements by road of the so-called Costa Tropical with the concentration of the metropolitan, local and even regional flows, which leads to a high congestion, mono functionality, lack of permeability and barrier effect, among others. The completion of the 'Autovía del Mediterráneo' is opening up an amazing opportunity to transform this axis that implies refocusing on the natural character of the coast and highlighting out its ability to pass through urban environments relationally and progressively. Are we able to rehabilitate insufficient and aggressive urban infrastructures, converting them in to secondary ones in relation to other more powerful and recently built ones and giving them a conciliatory character? Research that derives from the Master of Urban Planning of Granada, explores the intermodal coexistence of pedestrian and vehicular mobility, the intensification of mass transit systems and interchanges, improving accessibility, incorporating the landscape as a structuring element of space through the visualization of distant territory and comprehension of the environmental network.Fundación General Universidad de Granada-Empres

Exclusion and neoliberalism in the education system: socio-educational intervention strategies for an inclusive education system

Not only numerous academic and empirical studies recognise the educational factor as decisive on life and work trajectories, but also its integrating potential and role in the promotion of social cohesion are widely acknowledged. The diversity of current societies, the economic situation and the impact of neoliberal policies represent new challenges for an inclusive education that should maintain its integrating potential, especially in countries such as Spain. This opens two unavoidable approaches and reflection spaces. The first one, regarding the fight against social inequality and the second one, focused on the construction of a socially sustainable educational model against the hegemonic neoliberal impact. Both levels of reflection are the pillars of an inclusive education system. This article combines an analytical and reflective approach to these issues recommending a series of intervention experiences and strategies for the construction of an inclusive educational model

Re-Thinking infrastructure project for the metropolis: Laboratory Granada

First International Academic Conference on Places and Technologies, Belgrade, 3-4 April, 2014.Nowadays, urbanism must be able to reflect on the usefulness of certain infrastructure, transport infrastructure mainly, based on new policies for distribution of land uses. In the context of a new culture of sustainability and urban efficiency, this kind of urbanism seeks a reduction on the demand for mobility and expressly designed solutions. The coexistence of nature and artifice in metropolitan contexts is currently an important issue on which to re-think and to re-know its many possibilities. We could consider 'place' as 'urban and territorial material,' reinterpreting the quality of places. We could also look at it through the classical argument of 'points + lines + spots' inherited from landscape ecology. These and other methods are useful for understanding the urban fabric. They provide new meaning to the fabrics’ intrinsic values thanks to the presence of infrastructure. From the perspective of the transport infrastructure project, this reflection should facilitate a methodological evolution aimed at creating a new technology that understands design as a negotiation between citizen demands and spatial offer of 'place'. This technology would overcome the theoretical distance that exists between the perspective of the city as an autonomous compact entity and the 'splintered' present day metropolitan reality, defined by more open lexical and combinatory systems overlapping with conflict. Thus, now more than ever, extending the mechanisms of a creative project; transforming some spatial concepts into instruments such as outline, crossing or section, fusing landscapes, hybridizing functions, or adding different times of the territory, etc., are also technological keys, for the integration of large scale infrastructure.University of Belgrade: Faculty of Architecture, Professional Association Urban Laboratory and Faculty of Philosoph

Quality social spaces in casual urban style: Traces and interstices and their ability to integrate peripheral areas

In many cases, the periphery is an urban area generated by the addition of projects of individual initiative and a differentiated position, the sum of small residential systems of different types, scales and forms of dwelling in which gradually, the citizen finds his urban references. This is a process that is based on important features of geographical support as roads, plots, vegetation, crossroads, small farm buildings, etc. That act as a space - time window between the present metropolitan and the agricultural past. Social diversity reflects the multiple residential types, allows the citizen interaction in these areas, and increases the cultural richness and cohesion of these tissues now converted into neighborhoods. Interstices and traces give structure to a complex mesh of lines and dots, successful spaces of this fragmented city that help us to understand the urban development of periphery as a unique piece articulated with the rest of the city, and forms a system to harbor first level equipment. Through a case study, the southern district of the city of Granada (Spain), you can explore the various stages of formation of this district and deepen the cultural memory of the place, realizing the new role its urban project can begin play on the metropolitan scale.Universidade Nova de Lisbo