Outline of the Department of Prehistory and Archaeology at the University of Sevilla thirty years ago

En este trabajo se explica la creación del Departamento de Prehistoria y Arqueología de la Universidad de Sevilla. La cátedra de Historia de España antigua y media se dividió en tres departamentos, siendo dirigido el de Prehistoria y Arqueología por el profesor A. Blanco desde 1959 hasta 1973, y por el profesor Pellicer desde 1975 hasta 1992, fecha de su jubilación. En este trabajo se describen las vicisitudes, los cambios y las actividades docentes de esos momentos.This paper presents an overview of the creation of the Department of Prehistory and Archaeology of the University of Seville. The teaching of the Ancient and Middle History of Spain was divided between three departments. The Department of Prehistory and Archaeology was directed by Professor A. Blanco from 1959 to 1973, and by Professor Pellicer from 1975 to 1992, year in which he retired. This overview describes the vicissitudes, changes and teaching of those times

Problemática delBronce e inicios del Hierro en Iberia

Sin resume

La tierra como planeta

[Resumen] Se describen las teorías de formación del Sistema Solar discutiendo las posibilidades de un orígen evolutivo o catastrófico, comentando las teorías de orígen frío del planeta y la formación de los océanos y atmósfera en base a consideraciones sobre la historia térmica del planeta. Se describe la definición de las aplicaciones y tendencias actuales de la astronomía clásica desde nuestro planeta, su evolución, métodos, instrumentación y aplicación actual hacia la definición del Sistema de Referencia «cuasi inercial» y, a través de él, de la geometría del Universo como objetivo fundamental de la moderna astrometría

Los inicios del rito funerario de la incineración en la Península Ibérica

El trabajo tiene como objetivo analizar los diferentes círculos del Bronce Final peninsular para establecer el origen del rito funerario de la incineración, examinando otros focos extrapeninsulares en el Próximo Oriente, Mediterráneo Central y Atlántico.The aim of this study is to analize the different circles of the Late Bronze Age of the Iberian Peninsula in order to detect the origin of the incineration funerary ritual. Other sites outside the Iberian Peninsula (Orient, Central Mediterranean and Atlantic) are also examined

Liquid fuels from biomass: An energy self-sustained process integrating H2 recovery and liquid refining

[EN] In the last years the research activities on biomass valorisation (mainly residues from urban and agricultural activities) have been intensified. Biomass is an abundant resource for energy generation and its extensive utilization may make possible to fulfil the goals determined by the national and international regulations about renewable sources and greenhouse gas emissions. In this work, simulations are carried out using ASPEN PLUS for an integrated process to produce liquid fuels from biomass in a self-sustainable energetic regime (thermal and electric) and several process factors have been considered. The process initially combines a primary pyrolysis reactor associated to a (char + gases) gasification unit in order to optimize the biomass use, followed by downstream processes to enhance the quality of final liquid fuel. The factors studied were the composition of the biomass, the primary (or pyrolytic) liquid yield, the composition of the liquid fuel, as well as the amount of the oxidant and steam used in the primary char-gasifier reactor. The use of a simplified model for liquid fuel composition let us to stablish a range of operational conditions in which both thermal and electric balance of the process are favourable. In this sense, the maximum extraction of liquid fuel was found around 20-25% by working at 10-25% of O-2 (as pure oxygen or air) and 15-45% of steam in the gasifier and fulfilling self-sustainable process condition, while biomass should possess C/O weight ratios >= 1.Financial support by the Spanish Government (ENE2014-57651, CTQ2015-67592, and SEV-2016-0683 grants) is gratefully acknowledged.D. Catalán-Martínez; Domine ., ME.; Serra Alfaro, JM. (2018). Liquid fuels from biomass: An energy self-sustained process integrating H2 recovery and liquid refining. Fuel. 212:353-363. https://doi.org/10.1016/j.fuel.2017.10.014S35336321

An analytical methodology to derive power models based on hardware and software metrics

The use of models to predict the power consumption of a system is an appealing alternative to wattmeters since they avoid hardware costs and are easy to deploy. In this paper, we present an analytical methodology to build models with a reduced number of features in order to estimate power consumption at node level. We aim at building simple power models by performing a per-component analysis (CPU, memory, network, I/O) through the execution of four standard benchmarks. While they are executed, information from all the available hardware counters and resource utilization metrics provided by the system is collected. Based on correlations among the recorded metrics and their correlation with the instantaneous power, our methodology allows (i) to identify the significant metrics; and (ii) to assign weights to the selected metrics in order to derive reduced models. The reduction also aims at extracting models that are based on a set of hardware counters and utilization metrics that can be obtained simultaneously and, thus, can be gathered and computed on-line. The utility of our procedure is validated using real-life applications on an Intel Sandy Bridge architecture

Capacitance Evaluation on Non-parallel Thick-Plate Capacitors by Means of Finite Element Analysis

[EN] In this work we show the influence of the edge-effect on the electric field distribution and, hence, on the inner and outer capacitance in an inclined-plate capacitor system surrounded by an insulating medium taking into account the thickness of the conducting plates for a complete set of dimensions and insulating characteristics. Where available, we compare our results with previously published works. Finally, using statistical tools, we obtain approximate expression for computing the relationship between capacitance and insulation material characteristics, insulation gap, plate dimensions and angle.Bueno Barrachina, JM.; Cañas Peñuelas, CS.; Catalán Izquierdo, S. (2011). Capacitance Evaluation on Non-parallel Thick-Plate Capacitors by Means of Finite Element Analysis. Journal of Energy and Power Engineering. 5(4):373-378. doi:10.17265/1934-8975/2011.04.012S3733785