Historias de vida e historias lingüísticas : una aproximación a las identidades

Este texto se presentó como comunicación al II Congreso Internacional de Etnografía y Educación: Migraciones y Ciudadanías. Universidad Autónoma de Barcelona, Barcelona, 5-8 Septiembre 2008Desde una perspectiva etnográfica, a través de las historias de vida e historias lingüísticas de niños inmigrados, realizamos una aproximación a sus identidades, como parte constitutiva de la realidad escolar actual. Pretendemos conocer las situaciones de multiculturalidad y plurilingüismo, para formar identidades y contribuir al desarrollo de la convivencia en las escuelas, mediante una metodología interdisciplinar que combina las aportaciones de las Ciencias Sociales, Educativas y Lingüísticas. La aplicación de este estudio es principalmente de tipo educativo, para mejorar la formación inicial de los maestros. Esta comunicación forma parte de una investigación que se realiza en nuestro Departamento en la que, con un enfoque interdisciplinar, participan las áreas de conocimiento de Didáctica y Organización Escolar, Didáctica de la Lengua y Didáctica de las Ciencias Sociales. Adoptamos unas estrategias comunes para construir conocimiento, a fin de integrar las aportaciones procedentes de diversos ámbitos científicos, de manera globalizada y relacional (ALTAVA et al.,1999). Puesto que la realidad es compleja (MORIN, 1994) y que también lo es su conocimiento, asumimos que su aprendizaje requiere la convergencia de distintos clases de saberes procedentes de diferentes ámbitos científicos. En nuestro caso, realizamos aportaciones desde los campos disciplinares de la Lingüística, la Pedagogía y la Didáctica, y desde el conjunto de las Ciencias Sociales (Historia, Antropología, etc.). Nuestro objeto de estudio general es la situación escolar de los niños inmigrantes en la provincia de Castellón, las estrategias didácticas y organizativas que existen en la escuela respecto a la educación intercultural y al multilingüismo.Para lograrlo, en una perspectiva de indagación y acción, dicha investigación pretende dar respuesta a las situaciones de multiculturalidad y plurilingüismo en las escuelas actuales, dentro de la formación (inicial y permanente) de los maestros; todo ello bajo un planteamiento didáctico y académico de una mayor adaptación a la realidad y al proceso de armonización europeas en los programas y metodología docentes

Mineralogical insights to identify göktepe marble in the sculptural program of quinta das longas villa (Lusitania)

This archaeometric study is focused on the marble used in a group of fragmented sculptures found at the Roman villa of Quinta das Longas (Elvas, Portugal). Dating from the 4th century AD, the pieces are of remarkable quality and correspond to ideal and mythological figures from several iconographic cycles. The numerous fragments, all of very fine-grained white marble, are associated with the ornamentation of an impressive nymphaeum of the villa. Their high level of sculpture technique and style, the models followed and their similar typology to other well-known parallels raise the hypothesis of being linked with Aphrodisian workshops. Using a well-established multi-method approach, with Optical microscopy, X-ray Powder Diffraction (XRPD), qualitative and quantitative cathodoluminescence (CL) by CL-Optical and CL-SEM, and stable C and O isotopic and trace element analytical techniques (IRMS and ICP-AES), together with complementary parameters obtained from electron paramagnetic resonance (EPR) and87Sr/86Sr isotopes, the marble provenance can be identified with certainty. The results all point to the best quality of white Göktepe marble, confirming the stylistic connection to the ancient Carian sculptors. © 2021 by the authors. Licensee MDPI, Basel, Switzerland

Development of a Web System-based Geographic Information System Technologies to Mapping Electromagnetic Fields: First Developments

The purpose of this research work is to make decisions about the exposure levels of people to radiation, for which, the Web System based on GIS technology (DECOMAPS) was developed for mapping electromagnetic fields in the city of Riobamba. This system executes analysis, search, creation, automation of processes, and mapping activities of electromagnetic fields. The system was developed on an agile development methodology called SCRUM, which allows to create an optimal and interactive work environment between the product owner and the developers in order to create a quality system. Many technological tools were applied by the developer of this system. Once successfully completed, the system was subjected to tests of functionality and usability of the final product through quality metrics established by ISO 9126-3, where it was determined that the system is 93.64% functional, in addition to a 94.40% in usability. Concluding that the system is functional and can be implemented as a contribution in research to be developed in the future on the effects of electromagnetic fields on the human body.     Keywords: OpenGeo Suite, Java, SCRUM, ISO 9126-3, DECOMAP

The Rural Digital Divide in the Face of the COVID-19 Pandemic in Europe-Recommendations from a Scoping Review

The COVID-19 pandemic has revealed the digital vulnerability of many citizens of the rural world. This article identifies and analyzes the proposals made by academic literature to overcome the digital divide in the European rural world for the five-year period 2016-2020. A scoping review has been carried out according to the PRISMA methodology in the two dimensions of the digital divide: access and connectivity, and use and exploitation. Online databases were used to identify scientific articles from which, after screening, 28 key documents were selected. The results update Salemink systematic review of articles published between 1991 and 2014 on digital and rural development in Western countries and it also intends to go beyond by extracting recommendations. A variety of political, social, educational, technical and economic issues has been exposed, with a common emphasis on the empowerment of rural populations. The findings provide actionable evidence and proposals to facilitate decision-making in current policy information to overcome rural digital divide. From them, seven recommendations that could have a wide and rapid impact to minimize the effects of the COVID-19 pandemic linked to the rural digital divide are synthesized. Three lines of action in the medium term are also proposed: the evaluation of national and regional public policies; the consideration of digital inclusion as a potential instrument to reduce rural depopulation; and the training in advanced digital skills to improve the social communication processes, considered key to promote empowerment and entrepreneurship

Synaptic proteins promote calcium-triggered fast transition from point contact to full fusion.

The molecular underpinnings of synaptic vesicle fusion for fast neurotransmitter release are still unclear. Here, we used a single vesicle-vesicle system with reconstituted SNARE and synaptotagmin-1 proteoliposomes to decipher the temporal sequence of membrane states upon Ca(2+)-injection at 250-500 μM on a 100-ms timescale. Furthermore, detailed membrane morphologies were imaged with cryo-electron microscopy before and after Ca(2+)-injection. We discovered a heterogeneous network of immediate and delayed fusion pathways. Remarkably, all instances of Ca(2+)-triggered immediate fusion started from a membrane-membrane point-contact and proceeded to complete fusion without discernible hemifusion intermediates. In contrast, pathways that involved a stable hemifusion diaphragm only resulted in fusion after many seconds, if at all. When complexin was included, the Ca(2+)-triggered fusion network shifted towards the immediate pathway, effectively synchronizing fusion, especially at lower Ca(2+)-concentration. Synaptic proteins may have evolved to select this immediate pathway out of a heterogeneous network of possible membrane fusion pathways.DOI:http://dx.doi.org/10.7554/eLife.00109.001

Composts de residuos de caña de azúcar. Capacidad de cesión de boro a la planta

A greenhouse experiment was carried out to determine the capacity of three different composts to release boron gradually to a ryegrass crop. The three composts were made up using the following agricultural wastes: compost BO: 75% sugarcane bagasse, 17% orugo cake and 8% hen manure; compost BG: 78% bagas se and 22% hen manure and compost BT: 95% bagasse and 5% tobacco dust. The composts made up of sugarcane bagasse plus tobacco dust was more effective in releasing boron to the plant than bagasse mixed with orugo and/or hen manure composts. With respect to the form of B release, compost BO did it gradually, compost BG after a long period of integration in the soil and compost BT immediately, during the initial phase of the experiment.Se ha llevado a cabo un experimento de invernadero dedicado a valorar la capacidad que poseen tres composts para suministrar secuencialmente boro a un cultivo de ryegrass. Los composts se prepararon utilizando los siguientes residuos agrícolas: compost BO: 75% residuo de caña de azucar (bagazo), 17% orujo y 7% gallinaza; compost BG: 78% bagazo y 22% gallinaza y compost BT: 95% bagazo y 5% residuo de tabaco. El compost obtenido a partir de bagazo y residuo de tabaco fue mas eficaz para suministrar boro a la planta que los composts que incluían bagazo y orujo y/o gallinaza. Respecto a la forma de cesión de B, el compost BO lo suministró gradualmente,· el compost BG tras un largo período de integración en el suelo y el compost BT inmediatamente, al inicio del experimento