Réplica adaptada dunha metodoloxía activa desenvolvida na UDC noutras titulacións e Universidades mediante a colaboración entre docentes

[Resumo] No curso 2016-17, desenvolveuse unha iniciativa de innovación docente na materia de Hidroloxía Aplicada ás Obras Públicas do grao en Enxeñaría de Obras Públicas da UDC. O obxectivo desta materia é asimilar os conceptos básicos de hidroloxía e as súas aplicacións ás obras de enxeñaría civil. Os alumnos e as alumnas resolveron co software VISUALCORE problemas reais simplificados do efecto de drenes e pantallas no fluxo subterráneo. Dito software é unha versión adaptada á docencia do código CORE (Samper et al., 2011) desenvolvido polo grupo de investigación Aquaterra. A actividade foi avaliada moi positivamente polos estudantes e permitiu: (1) Fixar e profundar nos conceptos estudados e (2) Motivar ao alumnado achegando a teoría a realidade e amosándolles as habilidades adquiridas na materia e a utilidade do aprendido nas aplicacións reais. Unha docente da Universidade do Miño púxose en contacto co profesorado da UDC coa intención de replicar a metodoloxía no seu centro en tres materias de diferentes titulacións: (1) Hidroxeoloxía do Grado en Bioloxía-Xeoloxía; (2) Hidroxeoloxía do Grado en Xeoloxía e (3) Xestión das Augas Subterráneas do Mestrado en Xeociencias. Traballouse conxuntamente para adaptar a metodoloxía aos contidos e ás competencias das materias. Unha profesora da UDC realizou dúas estadías cortas na Universidade do Minho, no marco do programa Erasmus+ (EU, 2018), para impartir as clases co software e mostrar ao alumnado aplicacións reais da actividade profesional dun hidroxeólogo. A avaliación dos estudantes e da profesora da Universidade do Minho foi excelente. No futuro, preténdese fortalecer esta colaboración docente interuniversitaria e posiblemente estendela nalgún Traballo Fin de Mestrad

A DSP Based H.264 Decoder for a Multi-Format IP Set-Top Box

In this paper, the implementation of a digital signal processor (DSP) based H.264 decoder for a multi-format set-top box is described. Baseline and main profiles are supported. Using several software optimization techniques, the decoder has been fitted into a low-cost DSP. The decoder alone has been tested in simulation, achieving real-time performance with a 600 MHz system clock. Moreover, it has been integrated in a multi-format IP set-top box allowing the implementation of actual environment tests with excellent results. Finally, the decoder has been ported to a latest generation DSP

Maximizing multithreaded multicore architectures through thread migrations

Heterogeneity in general-purpose workloads often end up in non optimal per-thread hardware resource usage. The current trend towards multicore architectures, containing several multithreaded cores, increases the need of a complexity-effective way to expose the heterogeneity in general-purpose workloads to the underlying hardware, in order to obtain all the potential performance of these architectures. In this paper we present the Heterogeneity-Aware Dynamic Thread Migrator (hDTM), a novel complexity-effective hardware mechanism that exposes the heterogeneity in software to the hardware, also enabling the hardware to react to the dynamic behavior variations in the running applications. By means of core-to-core thread migrations, the hDTM mechanism strives to perform the desired behavior transparently to the Operating System. As an example of the general-purpose hDTM concept presented in this paper, we describe a naive hDTM implementation for a Power5-like processor and provide results on the benefits of the proposed mechanism. Our results indicate that even this simple hDTM implementation is able to get close to hDTM’s goal, not only avoiding losses due to bad thread-to-core assignments (up to a 25%) but also going beyond the best static thread-to-core assignment upper limit.Postprint (published version

Valoración del estado nutricional por parámetros antropométricos en dos unidades de hemodiálisis

Objetivos. Conocer el estado nutricional de los pacientes en nuestra unidad que nos sirva de guía para preparar la metodología de intervención

Spatial and temporal variability of seagrass at Lizard Island, Great Barrier Reef

Increasing threats to natural ecosystems from local and global stressors are reinforcing the need for baseline data on the distribution and abundance of organisms. We quantified spatial and/or temporal patterns of seagrass distribution, shoot density, leaf area index, biomass, productivity, and sediment carbon content in shallow water (0-5 m) at Lizard Island, Great Barrier Reef, Australia, in field surveys conducted in December 2011 and October 2012. Seagrass meadows were mapped using satellite imagery and field validation. A total of 18.3 ha of seagrass, composed primarily of Thalassia hemprichii and Halodule uninervis, was mapped in shallow water. This was 46% less than the area of seagrass in the same region reported in 1995, although variations in mapping methods may have influenced the magnitude of change detected. There was inter-annual variability in shoot density and length, with values for both higher in 2011 than in 2012. Seagrass properties and sediment carbon content were representative of shallow-water seagrass meadows on a mid-shelf Great Barrier Reef island. The data can be used to evaluate change, to parameterize models of the impact of anthropogenic or environmental variability on seagrass distribution and abundance, and to assess the success of management actions

Estudio descriptivo del insomnio en dos unidades de hemodiálisis. Aplicación de un programa educacional sobre higiene del sueño

Objetivos. Conocer la prevalencia del insomnio, así como las variables y factores desencadenantes en nuestros pacientes de hemodiálisis, para que conociendo el problema, estemos en condiciones de poder ayudarles mediante un programa educacional a adquirir hábitos saludables que favorezcan el sueño

Cost-Benefit Analysis of the Managed Aquifer Recharge System for Irrigation under Climate Change Conditions in Southern Spain

Droughts and climate change in regions with profitable irrigated agriculture will impact groundwater resources with associated direct and indirect impacts. In the integrated water resource management (IWRM), managed aquifer recharge (MAR) offers efficient solutions to protect, conserve, and ensure survival of aquifers and associated ecosystems, as the Water Framework Directive requires. The purpose of this paper is to analyse the socio-economic feasibility of the MAR system in the overexploited Boquerón aquifer in Hellín (Albacete, Spain) under climate change and varying irrigation demand conditions. To assess, in monetary terms, the profitability of the MAR system, a cost-benefit analysis (CBA) has been carried out. The results for the period 2020–2050 showed that the most favourable situations would be scenarios involving artificial recharge, in which future irrigation demand remains at the present level or falls below 10% of the current irrigation surface, as these scenarios generated an internal rate of return of between 53% and 57%. Additionally, the regeneration of the habitat will take between 5 and 9 years. Thus, the IWRM with artificial recharge will guarantee the sustainability of irrigation of the agricultural lands of Hellín and will achieve water balance even in severe climate change conditions.Administración y Dirección de Empresa