Análisis arqueomorfológico de la llanura litoral al Norte de Valencia. Estructuración territorial y revisión de las tramas centuriadas

This paper is the result of the archaeo-morphological analysis of an area located to the north of the city of Valencia (Spain). This research has been developed in the context of one of the author’s PhD, which aims to analyse the whole of the city’s historical territory. The morphology of Valencia’s historical landscape and its different features have been analysed with a diachronic and multidisciplinary approach, combining data obtained from different types of analysis and through methodological procedures based on archaeo-morphology, traditional archaeology and landscape archaeology. For the first time, this methodology has been used in this territory. The results obtained represent a challenge regarding traditionally defended theses.

Ocupación y estructuración del paisaje litoral de "Valentia" durante el período romano

El territorio de Valentia está siendo analizado en el contexto de un nuevo proyecto de investigación, Valentia Landscape Project, que busca modelizar la evolución de paisaje cultural valenciano desde la protohistoria a época moderna. Una parte importante de este proyecto se centra en el período romano, puesto que uno de los principales objetivos es la revisión, a través de un nuevo análisis arqueomorfológico, de las hipótesis propuestas hasta la fecha para la red viaria y los parcelarios antiguos. Se presentan los primeros resultados.

Incendis, fauna i gestió del patrimoni natural

Article que analitza els efectes del foc sobre la fauna del Cap de Creus i que planteja algunes propostes per gestionar el paisatge natural i la fauna del Cap de Creus

Building wood debris piles benefits avian seed dispersers in burned and logged Mediterranean pine forests

Salvage logging is a common practice carried out in burned forests worldwide, and intended to mitigate the economic losses caused by wildfires. Logging implies an additional disturbance occurring shortly after fire, although its ecological effects can be somewhat mitigated by leaving wood debris on site. The composition of the bird community and its capacity to provide ecosystem services such as seed dispersal offleshy-fruited plants have been shown to be affected by postfire logging. We assessedthe effects of the habitat structure resulting from different postfire management practices on the bird community, in three burned pine forests in Catalonia (western Mediterranean). For this purpose, we focused on the group of species that is responsible for seed dispersal, a process which takes place primarily during the winter in theMediterranean basin. In addition, we assessed microhabitat selection by seed disperser birds in such environments in relation to management practices. Our results showed a significant, positive relationship between the density of wood debris piles and the abundance of seed disperser birds. Furthermore, such piles were the preferredmicrohabitat of these species. This reveals an important effect of forest management on seed disperser birds, which is likely to affect the dynamics of bird-dependent seed dispersal. Thus, building wood debris piles can be a useful practice for the conservation of both the species and their ecosystem services, while also being compatible with timber harvesting

A vueltas con la Crónica del rey don Rodrigo

The paper discusses the problem of the literary genre of the Crónica sarracina from a peninsular and european points of view. It is considerer through the prism of a new kind of fiction, related to history and an incipient realism, which grows up along the 15th century. Moreover, it reveals new fragments inspired by Pedro de Corral from the catalan version of Seneca’s tragedies and from the Libro de los doce sabios

The adequacy of different robust statistical tests in comparing two independent groups

In the current study, we evaluated various robust statistical methods for comparing two independent groups. Two scenarios for simulation were generated: one of equality and another of population mean differences. In each of the scenarios, 33 experimental conditions were used as a function of sample size, standard deviation and asymmetry. For each condition, 5000 replications per group were generated. The results obtained by this study show an adequate type error I rate but not a high power for the confidence intervals. In general, for the two scenarios studied (mean population differences and not mean population differences) in the different conditions analysed, the Mann-Whitney U-test demonstrated strong performance, and a little worse the t-test of Yuen-Welch.

Aprendizaje elemental a pesar de entrenamiento configuracional en una tarea de navegación

Se entrenó a unas ratas a encontrar una plataforma invisible definida por una configuración de dos objetos en la mitad de los ensayos y por una segunda configuración de dos objetos en la otra mitad. Los objetos estaban espaciados alrededor del borde de la piscina. Las dos configuraciones se presentaron con la misma frecuencia cada día, entremezcladas semi-al azar. En el Experimento 1, las configuraciones de las ratas fueron A y B (configuración 1), y B y C (configuración 2). B era un objeto común a ambas configuraciones. Al final de esta fase los animales recibieron ensayos de prueba en los que se colocaba a una rata en la piscina sin la plataforma y se registraba el tiempo que pasaba en el cuadrante de la plataforma. Los animales tuvieron ensayos de prueba con las configuraciones del entrenamiento, con los objetos por separado, y con una nueva configuración, A y C (una prueba de integración). Tanto ante las configuraciones del entrenamiento como en presencia de B, las ratas pasaron una cantidad de tiempo sustancial buscando la plataforma en el cuadrante de la plataforma; no se obtuvo ningún otro efecto en las otras pruebas. En el Experimento 2 se introdujeron varios cambios metodológicos y se replicaron los principales resultados del Experimento 1. Concluimos que tras un entrenamiento configuracional como el empleado, la navegación de las ratas hacia una plataforma invisible estuvo controlada por un aprendizaje elemental, por B.

Blocking and unblocking in a navigation task

Rodrigo, Chamizo, McLaren, & Mackintosh (1997) demonstrated the blocking effect in a navigational task using a swimming pool: rats initially trained to use three landmarks (ABC) to find an invisible platform learned less about a fourth landmark (X) added later than did rats trained from the outset with these four landmarks (ABCX). The aim of the experiment reported here was to demonstrate unblocking using a similar procedure as in the previous work. Three groups of rats were initially trained to find an invisible platfom in the presence of three landmarks: ABC for the Blocking and Unblocking groups and LMN for the Control group. Then, all animals were trained to find the platform in the presence of four landmarks, ABCX. In this second training, unlike animals in the Blocking group to which only a new landmark (X) was added in comparison to the first training, the animals in the Unblocking group also had a change in the platform position. In the Control group, both the four landmarks and the platform position were totally new at the beginning of this second training. As in Rodrigo et al. (1997) a blocking effect was found: rats in the Blocking group learned less with respect to the added landmark (X) than did animals in the Control group. However, rats in the Unblocking group learned about the added landmark (X) as well as did animals in the Control group. The results are interpreted as an unblocking effect due to a change in the platform position between the two phases of training, similarly to what is normal in classical conditioning experiments, in which a change in the conditions of reinforcement between the two training phases of a blocking design produce an attenuation or elimination of this effect. These results are explained within an error-correcting connectionist account of spatial navigation (McLaren, 2002).

Educació: frontera permeable? Una mirada des de dins i des de fora

De nou un full en blanc, la perspectiva de paper és ben llarga, l'ordinador no ens hi posa fronteres i esper que les idees em flueixin i puga descriure allò que ha estat, i està sent la nostra vida en i per a l'educació. Quina paraula amb més significats! Si en diem educació ens podem referir àmpliament a l'experiència mútua que s'esdevé quan optem per "donar classes" que es diu col·loquialment, donar classes! En una època en que ningú dóna res...

Educació: frontera permeable? Una mirada des de dins i des de fora

De nou un full en blanc, la perspectiva de paper és ben llarga, l'ordinador no ens hi posa fronteres i esper que les idees em flueixin i puga descriure allò que ha estat, i està sent la nostra vida en i per a l'educació. Quina paraula amb més significats! Si en diem educació ens podem referir àmpliament a l'experiència mútua que s'esdevé quan optem per "donar classes" que es diu col·loquialment, donar classes! En una època en que ningú dóna res...

Educació: frontera permeable? Una mirada des de dins i des de fora

De nou un full en blanc, la perspectiva de paper és ben llarga, l'ordinador no ens hi posa fronteres i esper que les idees em flueixin i puga descriure allò que ha estat, i està sent la nostra vida en i per a l'educació. Quina paraula amb més significats! Si en diem educació ens podem referir àmpliament a l'experiència mútua que s'esdevé quan optem per "donar classes" que es diu col·loquialment, donar classes! En una època en que ningú dóna res...

Can salvage logging affect seed dispersal by birds into burned forests?

The recovery of vegetation in Mediterranean ecosystems after wildfire is mostly a result of direct regeneration, since the same species existing before the fire regenerate on-site by seeding or resprouting. However, the possibility of plant colonization by dispersal of seeds from unburned areas remains poorly studied. We addressed the role of the frugivorous, bird-dependent seed dispersal (seed rain) of fleshy-fruited plants in a burned and managed forest in the second winter after a fire, before on-site fruit production had begun. We also assessed the effect on seed rain of different microhabitats resulting from salvage logging (erosion barriers, standing snags, open areas), as well as the microhabitats of unlogged patches and an unburned control forest, taking account of the importance of perches as seed rain sites. We found considerable seed rain by birds in the burned area. Seeds, mostly from Olive trees Olea europaea and Evergreen pistaches Pistacia lentiscus, belonged to plants fruiting only in surrounding unburned areas. Seed rain was heterogeneous, and depended on microhabitat, with the highest seed density in the unburned control forest but closely followed by the wood piles of erosion barriers. In contrast, very low densities were found under perches of standing snags. Furthermore, frugivorous bird richness seemed to be higher in the erosion barriers than elsewhere. Our results highlight the importance of this specific post-fire management in bird-dependent seed rain and also may suggest a consequent heterogeneous distribution of fleshy-fruited plants in burned and managed areas. However, there needs to be more study of the establishment success of dispersed seeds before an accurate assessment can be made of the role of bird-mediated seed dispersal in post-fire regeneration

Proceso de transformación de las concepciones del profesorado sobre la resolución de problemas matemáticos

The aim of this study is to analyze the transformation of Primary School teachers’ conceptions about mathematical problem solving. We performed a study with 18 teachers from three public schools: in each class (from 1º to 6º) there were two interventions, and we were interviewed teachers before and after them. The results have show identified changes in: 1) teacher’s expectations about students’ abilities; classroom management; perception of diversity; mathematical strategies used by students; communication in the classroom; causes of the problems encountered; and relevance process of problem solving in mathematics teaching. The transformation of teachers’ conceptions is due to the following factors: a) awareness of the practice; b) systematic reflection; c) the contrast between different ways to work solving problems in math class