186 research outputs found
Academic Cultures: Psychology of Education Perspective
No full textThe work contributes to a wider range of research, the main objective of which is to investigate models of thought and behaviour that result from belonging to a given academic culture. The academic culture that will be examined is that within the university system, and this research will look at how this culture can take different forms. According to (Bourdieu, 1984), university professors hold an institutionalised form of cultural capital that places them in a dominant position within a field of power. The university system is immersed in a specific culture, and it expresses a given culture and understanding this culture will allow one to understand the system itself (Anolli, 2014). Cultural models are the result of a process of signification, which is understood as the ability of a group or community to elaborate a shared symbolic dimension around an object or symbol at a given historical moment. The cultural models that underlie the professional context orient social and organizational behaviour, which contributes to the construction, on a symbolic level, of identity. © 2021, The Author(s)
Reseña al libro de Norberto Mollo, Toponimia indígena. Sur de Córdoba, sur de San Luis y sur de Santa Fe.
No full textDescription and shallow analysis of the book Indigenous toponymy. South of Córdoba, south of San Luis and south of Santa Fe, in which the author gathers and systematizes the information collected during years of research and fieldwork, in relation to the indigenous toponyms of the mentioned provinces. Descripción y análisis somero del libro Toponimia indígena. Sur de Córdoba, sur de San Luis y sur de Santa Fe, en el cual el autor reúne y sistematiza la información recogida durante años de investigación y trabajo de campo, en relación con los topónimos indígenas de las provincias mencionadas.Review: Norberto Mollo, Indigenous toponymy. South of Córdoba, south of San Luis and south of Santa Fe.
Non-invasive water content estimation in a tuff wall by DTS
No full textUndesired presence of water in historical masonries has a negative effect on the walls and causes deterioration of decorative works covering the walls, such as frescoes and valuable plasters. To prevent this, non-invasive moisture measurements are needed that avoid damage during masonry inspection caused by sample taking or probe insertion. Active heated distributed temperature sensing (DTS) with optical fibres is widely used in hydrology to assess soil moisture content. The aim of this study is to examine the potential of this technique for non-invasive water content measurements in a real scale wall. The tested masonry is made of yellow Neapolitan tuff bricks, a material widely used in historical buildings of Campania (Southern Italy). Distributed temperature measurements are carried out with three different heating strategies (different power and duration) during the drying process following the complete saturation of the wall. The acquired temperature data are then processed with three different methods (estimators), so to identify the best combination of heating strategy and data processing approach. Despite the presence of a significant bias, it is possible to identify relationships between the gravimetric moisture content and the different estimators. Those relationships are influenced to a large degree by the thermal contact between the DTS cable and the masonry. This research shows it is possible to measure water content in tuff masonry using non-invasive active heated fibre optic cable when establishing good thermal contact between the cable and the masonry.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Water Resource
Classification and mapping of the ecoregions of Italy
No full textEcological regions or ecoregions derive from ecological classification of land and represent broad and discrete ecologically homogeneous areas within which natural communities and species interact with the physical elements of the environment. The aim of this paper is to define the ecoregions of Italy, southern Europe, based on a robust methodological process for classification and mapping. The ecoregions of Italy comprise 2 Divisions, 7 Provinces, 11 Sections and 33 Subsections and constitute the first comprehensive ecological classification of the country that integrates accurate and updated cartographies and knowledges on climate, vegetation, land units and biogeography. This classification has the strength to be adopted as a proper framework for ecological modelling, biodiversity conservation policies and sustainable territorial planning at the national and subnational level. © 2014, © 2014 The Author(s). Published by Taylor & Francis
VSiPMT a new photon detector
No full textPhoton detection is a key factor to study many physical processes in several areas of fundamental physics research. Focusing the attention on photodetectors for particle astrophysics, the future experiments aimed at the study of very high-energy or extremely rare phenomena (e.g. dark matter, proton decay, neutrinos from astrophysical sources) will require additional improvements in linearity, gain, quantum efficiency and single photon counting capability. To meet the requirements of these class of experiments, we propose a new design for a modern hybrid photodetector: the VSiPMT (Vacuum Silicon PhotoMultiplier Tube). The idea is to replace the classical dynode chain of a PMT with a SiPM, which therefore acts as an electron detector and amplifier. The aim is to match the large sensitive area of a photocathode with the performances of the SiPM technology
Recent development on the realization of a 1-inch VSiPMT prototype
No full textThe VSiPMT (Vacuum Silicon PhotoMultiplier Tube) is an innovative design for a revolutionary hybrid photodetector. The idea, born with the purpose to use a SiPM for large detection volumes, consists in replacing the classical dynode chain with a SiPM. In this configuration, we match the large sensitive area of a photocathode with the performances of the SiPM technology, which therefore acts like an electron detector and so like a current amplifier. The excellent photon counting capability, fast response, low power consumption and great stability are among the most attractive features of the VSiPMT. In order to realize such a device we first studied the feasibility of this detector both from theoretical and experimental point of view, by implementing a Geant4-based simulation and studying the response of a special non-windowed MPPC by Hamamatsu with an electron beam. Thanks to this result Hamamatsu realized two VSiPMT industrial prototypes with a photocathode of 3mm diameter. We present the progress on the realization of a 1-inch prototype and the preliminary tests we are performing on it
Vacuum silicon photo multiplier tube (VSiPMT): Towards a new generation of photon detectors
No full textPhotomultiplier tubes (PMT) technology has been improved continuously in the last years: the quantum efficiency of the photocathode has now reached a level of 40%, close to the theoretical maximum; single photon sensitivity and time resolution have been improved by a careful design of electrostatic focusing on the 1st dynode; with new coatings the secondary electron yield of dynodes has greatly improved, reducing the required number of dynodes and their size. �� 2014 AEIT
A moeda: Marx e Keynes
No full textEste trabalho tem como objetivo analisar a moeda dentro da economia capitalista. Busca-se mostrar que a moeda não é somente um elemento que facilita as trocas. Essa visão de neutralidade da moeda faz parte da teoria chamada ortodoxa. Em contraposição a esta teoria será colocada a idéia de que a moeda desempenha um papel fundamental no sistema, pois ela forma o início e o resultado de qualquer produção, o que afeta todas as outras variáveis econômicas. Para defender essa hipótese serão utilizadas como recurso teórico algumas das obras dos autores Karl Marx e John Maynard Keynes, bem como textos de apoio, principalmente de Maria de Lourdes Rollemberg Mollo (1988) e Leda Maria Paulani (1991)This work aims to analyze the currency within the capitalist economy. Try to show that the currency is not just an element that facilitates the exchange. This vision of neutrality of money is part of the theory called Orthodox. In contrast to this theory is on the idea that money plays a key role in the system, because it means the beginning and the outcome of any production, which affects all other economic variables. To defend this hypothesis will be used as some theoretical appeal of the works of author Karl Marx and John Maynard Keynes, and texts of support mainly from Maria de Lourdes Rollemberg Mollo (1988) and Leda Maria Paulani (1991
Magma chambers emplaced in carbonate substrate: petrogenesis of skarn and cumulate rocks and implication on CO2-degassing in volcanic areas.
No full textCrystal-rich lithic clasts occurring in volcanic deposits are key tools to understand processes of storage, cooling, and fractionation of magmas in pre-eruptive volcanic systems. These clasts represent snapshots of the magma-chamber-host-rock interface before eruption and provide information on crystallization, differentiation, and degrees of interaction between magma and wall-rock. In this study we have focused on the petrology of clasts of cumulate and skarn rocks from the Colli Albani Volcanic District with the aim of shedding light on magma-carbonate interaction and CO 2 emission in volcanic areas. By means of phase relations, bulk-rock chemistry, mineral compositions and isotope data we have identified different types of cumulates and skarns. Cumulates containing either clinopyroxene ± olivine associated with Cr-bearing spinel or glass + phlogopite have been classed as primitive and differentiated, respectively. Cumulates originate at the interface between either a primitive or differentiated magma and carbonate-bearing wall-rock characterized by the occurrence of CaO-rich melt. Skarns have been classed as exoskarns, characterized by xenomorphic textures and abundant calcite, and endoskarns, characterized by a hypidiomorphic texture, Ca-Tschermak-rich mineral phases, and interstitial glass. Exoskarns formed by means of solid-state reactions in a dolomite-bearing protolith whereas endoskarns crystallized from a silicate melt that experienced exoskarn assimilation. Our study indicates that magma-carbonate interaction is a multi-step process that proceeds beyond the formation of skarn shells. Magma and carbonate rocks, when in contact, continuously interact leading to the formation of exoskarns, endoskarns, cumulates (primitive and differentiated types), and differentiated melts. The geochemical characteristics of the studied endoskarn and cumulate rocks indicate that crustal contamination of the Colli Albani magmas occurs through the simultaneous assimilation of both solid crustal material (dolomite and/or exoskarns) and partially molten crustal material (CaO-rich melt). The oxygen and carbon isotope compositions of calcite in equilibrium with the skarns suggest that dolostone-limestone assimilation and decarbonation are able to provide the massive CO 2 release observed in carbonate-hosted magmatic systems, such as Colli Albani. © The Author 2012. Published by Oxford University Press. All rights reserved
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