Experiencias de aprendizaje con las TIC desde una perspectiva dialógica: Hacia la desaparición de las fronteras entre los diferentes escenarios educativos

En la sociedad actual, los diferentes ámbitos “clásicos” de la educación – formal, no formal e informal-, tienden a mezclarse y ejercer de forma superpuesta su dominio. Las pretensiones de poder ya no son válidas. Ahora necesitamos el diálogo argumentado para llegar a acuerdos, para establecer las funciones y roles que antes estaban dadas de antemano. Al mismo tiempo que vehículo de consenso comprometedor, la palabra compartida canaliza los aprendizajes necesarios en la sociedad actual: lo que sabemos se construye en interacciones mediadas por el lenguaje. Estas interacciones se dan ya en muchas ocasiones en entornos o redes virtuales. El presente trabajo trata de visibilizar prácticas educativas que han tenido su punto de partida en el acuerdo entre familiares, profesorado y alumnado para lograr el aprendizaje de estos. El hoy necesario uso de las TIC ha sido clave en la consecución y mantenimiento de dichos compromisos y aprendizajes.Departamento de PedagogíaMáster en Psicopedagogí

Variability in metal deposition among industrial, rural and urban areas in the Cantabria region (Northern Spain)

Cantabria is a small region located in Northern Spain that combines different land uses; thus, urban, industrial and rural areas are present in a relatively small area (5300 km2); however, the anthropogenic influence is evident by studying the deposition of metals towards these areas. Three sampling sites (industrial, urban and rural) were selected to assess the variability in metal deposition. Sampling was carried out monthly (from January 2012 to July 2012) using a bulk (funnelbottle) sampler. As, Cd, Cr, Cu, Mn, Mo, Ni, Pb, Ti, Zn and V were determined in the water-soluble and in the insoluble fractions of deposition samples. The impact of the human activities in the industrial area can be seen on several metals such as Pb, Zn, Cu and Mn. The most obvious influence was found for Mn, high fluxes were measured in the industrial site with a mean value of 2260 μg/m2·day; in contrast to urban (99.6 μg/m2·day) and rural (15.3 μg/m2·day) areas. The lowest flux values were found in the rural area for all the elements. Enrichment Factor (EF) analysis were also studied for the three sites. The high EFs values found for Pb, Mn, Cu, and Zn (>100) in the industrial site point to significant anthropogenic sources, mainly originated from industrial activities (steel and ferro-manganese alloy manufacturing plants) and road traffic

A comparative study between the fluxes of trace elements in bulk atmospheric deposition at industrial, urban, traffic, and rural sites

The input of trace elements via atmospheric deposition towards industrial, urban, traffic, and rural areas is quite different and depends on the intensity of the anthropogenic activity. A comparative study between the element deposition fluxes in four sampling sites (industrial, urban, traffic, and rural) of the Cantabria region (northern Spain) has been performed. Sampling was carried out monthly using a bulk (funnel bottle) sampler. The trace elements, As, Cd, Cr, Cu, Mn, Mo, Ni, Pb, Ti, Zn, and V, were determined in the water soluble and insoluble fractions of bulk deposition samples. The element deposition fluxes at the rural, urban, and traffic sites followed a similar order (Zn>Mn>>Cu=Ti>Pb>V=Cr>Ni>>As=Mo>Cd). The most enriched elements were Cd, Zn, and Cu, while V, Ni, and Cr were less enriched. An extremely high deposition of Mn was found at the industrial site, leading to high enrichment factor values, resulting from the presence of a ferro-manganese/silicomanganese production plant in the vicinity of the sampling site. Important differences were found in the element solubilities in the studied sites; the element solubilities were higher at the traffic and rural sites, and lower at the urban and industrial sites. For all sites, Zn and Cd were the most soluble elements, whereas Cr and Ti were less soluble. The inter-site correlation coefficients for each element were calculated to assess the differences between the sites. The rural and traffic sites showed some similarities in the sources of trace elements; however, the sources of these elements at the industrial and rural sites were quite different. Additionally, the element fluxes measured in the insoluble fraction of the bulk atmospheric deposition exhibited a good correlation with the daily traffic volume at the traffic site.The authors are grateful for the financial support from the CTM 2010-16068 (Spanish Ministry of Science and Innovation) and CTM 2013-43904 R (Spanish Ministry of Economy and Competitiveness) projects. The “Consejería de Medio Ambiente” from the Cantabria Government is also acknowledged for sending the report on the background levels of heavy metals and trace elements in soils in the Cantabria region. The authors are also grateful to “Ayuntamiento de Camargo” for helping us with the sampling site of Maliaño

Acoustic biometric system based on preprocessing techniques and linear support vector machines

Producción CientíficaDrawing on the results of an acoustic biometric system based on a MSE classifier, a new biometric system has been implemented. This new system preprocesses acoustic images, extracts several parameters and finally classifies them, based on Support Vector Machine (SVM). The preprocessing techniques used are spatial filtering, segmentation—based on a Gaussian Mixture Model (GMM) to separate the person from the background, masking—to reduce the dimensions of images—and binarization—to reduce the size of each image. An analysis of classification error and a study of the sensitivity of the error versus the computational burden of each implemented algorithm are presented. This allows the selection of the most relevant algorithms, according to the benefits required by the system. A significant improvement of the biometric system has been achieved by reducing the classification error, the computational burden and the storage requirements

Levels and sources of polycyclic aromatic hydrocarbons in the soluble fraction of the atmospheric deposition in Cantabria (northern Spain)

The aim of this work is to assess the levels of polycyclic aromatic hydrocarbons (PAHs) in the soluble fraction of the bulk atmospheric deposition in four sites of a small region located in northern Spain (Cantabria). Samples were collected monthly for two years at an urban site (Santander), and for one year at an industrial (Maliaño), rural (Bárcena Mayor) and traffic (Cabezón de la Sal) sites. Samples were filtered and the filtrate was extracted, concentrated, purified and analysed for 15 PAHs: acenaphthylene (ACY), acenaphthene (ACE), fluorene (FLU), phenanthrene (PHE), anthracene (ANT), fluoranthene (FLA), pyrene (PYR), benzo[a]anthracene (BaA), chrysene (CHR), benzo[b]fluoranthene (BbF), benzo[k]fluoranthene (BkF), benzo[a]pyrene (BaP), indeno[1,2,3-cd]pyrene (IcdP), dibenzo[a,h]anthracene (DahA), and benzo[ghi]perylene (BghiP). The highest deposition fluxes of PAHs were found at the industrial site (Maliaño); the total PAH fluxes at the other sites were similar. Box plots of the PAH levels found in the literature in wet and bulk deposition samples were used to compare the values observed in this work. FLA, BaA, PHE and PYR were the most abundant PAHs at the industrial site. At the urban and rural site, the profile found in the deposition samples was similar: PHE>FLA>BaA>PYR. The traffic site showed a different profile: PYR>ANT>FLU>FLA. A preliminary source identification study was made by calculating diagnostic ratios of some PAH isomers (FLA/(FLA+PYR) and BaA/(BaA+CHR)); these ratios were compared with those found for the main PAH industrial and non-industrial sources in the region.This work was supported by the Spanish Ministry of Economy and Competitiveness (MINECO) through the Projects CTM2010-16068 and CTM2013-43904R

Juez de comisión para el control de las cuentas toledanas en 1635-1636

En este estudio se refleja la participación del arbitrista Miguel Caza de Leruela en el examen de las cuentas de la ciudad de Toledo entre 1635 y 1636 aportando datos biográficos hasta ahora desconocidos

KEN LOACH, EL REENCUENTRO CON LO POPULAR

En este trabajo abordaremos la obra de Ken Loach, uno de los pocos directores actuales con éxito internacional que se han fijadoen la cultura y en las problemáticas de los sectores populares desde una mirada política. Este cineasta británico intenta recuperarun cine que se apoye en lo popular como "teatro del proletariado", en contraposición a los relatos de la cultura dominante y susestereotipos. Loach toma posición sin desdeñar a la industria del séptimo arte ni a su modo tradicional de construir relatos.Partiendo de una formación como documentalista social, construye sus filmes apoyándose en una variedad de elementosnarrativos de diversos géneros populares, como el melodrama, y en las técnicas de filmación usuales en la gran industria. Laimportancia de lo formal no es menor en el tratamiento que Loach realiza de la cultura popular en sus películas. En este trabajointentaremos dar cuenta de las combinaciones de elementos y recursos que utiliza para elaborar sus películas, y cómo seinterrelacionan éstos en la representación de lo popular. El período elegido para analizar su producción abarca las últimas dosdécadas, tiempos de cambios profundos en la cultura de los sectores populares a nivel mundial

Los contratos administrativos en la emergencia de la provincia de Buenos Aires

La intención del presente trabajo es brindar un panorama general acerca de la normatividad contractual administrativa en el ámbito de la provincia de Buenos Aires y evaluar el impacto generado a partir de la sanción de una serie de leyes durante el año 2016, que modificaron sustancialmente la regulación de los contratos más importantes que suscribe la Administración Pública Provincial en el marco de su quehacer cotidiano administrativo.Facultad de Ciencias Jurídicas y Sociale

Los contratos administrativos en la emergencia de la provincia de Buenos Aires

La intención del presente trabajo es brindar un panorama general acerca de la normatividad contractual administrativa en el ámbito de la provincia de Buenos Aires y evaluar el impacto generado a partir de la sanción de una serie de leyes durante el año 2016, que modificaron sustancialmente la regulación de los contratos más importantes que suscribe la Administración Pública Provincial en el marco de su quehacer cotidiano administrativo.Facultad de Ciencias Jurídicas y Sociale

Los contratos administrativos en la emergencia de la provincia de Buenos Aires

La intención del presente trabajo es brindar un panorama general acerca de la normatividad contractual administrativa en el ámbito de la provincia de Buenos Aires y evaluar el impacto generado a partir de la sanción de una serie de leyes durante el año 2016, que modificaron sustancialmente la regulación de los contratos más importantes que suscribe la Administración Pública Provincial en el marco de su quehacer cotidiano administrativo.Facultad de Ciencias Jurídicas y Sociale