1,114 research outputs found

    Mobile system for monitorization of noise pollution

    Get PDF
    A día de hoy, según múltiples estudios de las más importantes organizaciones mundiales en el sector de la salud, se ha descubierto que la contaminación acústica es uno de los factores más perjudiciales en la vida humana y que puede derivar en enfermedades de todo tipo e incluso provocar la muerte. Por ello, se dedican programas para estudiar la cantidad de decibelios a los que nos enfrentamos diariamente y comprobar que se encuentran en una escala buena parea nuestra salud. El principal inconveniente de estos programas es que suelen ser bastante caros, ya que se necesitan equipos especializados para las lecturas de los correspondientes datos y éstas se realizan muy espaciadas temporalmente pudiendo llegar a pasar años entre lectura y lectura. Para solucionar este problema, se ha desarrollado un sistema que permite a cualquier persona aportar su granito de arena en la lectura y medición de datos, mediante un sistema que sigue el esquema del Internet de las Cosas haciendo uso de componentes muy movibles y baratos

    Applying Renewable Energy Technologies in an Integrated Optimization Method for Residential Building’s Design

    Get PDF
    Designing a Zero Energy Building (ZEB) requires an optimal choice of the materials of a building envelope. Different material properties and window areas could be selected to generate a set of possibilities of the design of a building, being the demand defined by its thermal characteristics. The energy demand of a building could be produced with renewable systems such as photovoltaic. Moreover, the HVAC (Heating, Ventilation, and Air Conditioning) systems could be selected considering the system cost. The present methodology focuses on finding a balance between investment and low energy consumption for a building, based on an integrated optimization method. Such methodology applies a Tabu search algorithm and a simplified model to select the passive design. Afterwards, active elements of the design, as photovoltaic systems, are selected. Therefore, the methodology faces the problem of estimating the annual energy demand and the life cycle cost. The goal is the design of a building with a large amount of energy generated by renewable energy, to have a ZEB, and in the worst case, a nearly Zero Energy Building (nZEB). This methodology reduces investment, reduces the energy demand and selects the best construction materials, renewable energy, and air conditioning system. The present paper analyzes a set of case studies considering different climatic zones in Spain. The results conclude that the methodology could help builders in the design stage, to find a new design that allows a ZEB with the optimal life cycle cost.Ministerio de Economía y Competitividad BIA2016-77431-C2-1-

    Effects of a Personalised Physical Exercise Program on University Workers Overall Well-Being: “UAL-Activa” Program

    Get PDF
    Background and objectives: Regular individualised physical exercise (PE) is a habit that not only has consequences for overall health (physical, emotional, social and mental) but can also have positive effects on organisations and institutions, as it helps workers to improve their personal balance and recover from the effort of their working day, showing higher levels of energy, commitment and productivity. The aim of this study was to understand the relationship between the practice of PE and well-being in personal life and at work, as well as job satisfaction, overall health and the assessment of the personal training service provided by final-year students studying for a degree in Physical Activity and Sport Sciences. Methods: This study used a qualitative research methodology. There were 25 employees of the University of Almeria (UAL) (M = 52.16 9.55 years), divided into two focus groups and participating in the physical exercise program “UAL Activa”. Results: The following three main themes, based on the results, emerged: (a) social well-being during PE practice, (b) assessment of the personal training service and (c) physical exercise as an emotional benefit at work. Conclusion. The workers’ interventions have shown that participating in a personalised PE program led by a personal trainer can improve overall health and mood, with a very positive influence on the working environment.Sports Service of the University of Almeria, Spai

    A field study on adaptive thermal comfort in Spanish primary classrooms during summer season

    Get PDF
    The assessment of indoor thermal comfort in schools has become an essential object of study; however, applying existing thermal comfort criteria would assume children and adults have a similar range of thermal comfort, without considering discrepancies regarding their level of activity or their behavioural adaptation. Therefore, the objective of the present study was to investigate the thermal comfort in a school building based on an adaptive thermal comfort field study in Seville, in the southwest of Spain, during a summer season. In this study, 2 free-running and 1 air-conditioned classroom were analysed; 67 students aged 10–11 years participated and 2010 thermal questionnaires were collected. A discrepancy was observed between the predicted mean vote and the thermal sensation vote, showing the former is not a good predictor of thermal perception. Thermoneutrality was not always the desired sensation for children; a preference for coolness was detected. A neutral temperature was observed at an average indoor temperature of 24–27 °C and a widening in the thermal comfort range was detected compared with international standards. Regarding adaptive strategies, they showed a preference towards opening windows and doors over using fans or changing clothes. The results suggest that the application of the current models for adults would not be suitable for estimating the thermal comfort of children, and these data could be used to promote natural strategies for assessing thermal comfort over conditioning systems in schools, with the aim of both space ventilation and energy efficiency

    Eco‐Holonic 4.0 Circular Business Model to  Conceptualize Sustainable Value Chain Towards  Digital Transition 

    Get PDF
    The purpose of this paper is to conceptualize a circular business model based on an Eco-Holonic Architecture, through the integration of circular economy and holonic principles. A conceptual model is developed to manage the complexity of integrating circular economy principles, digital transformation, and tools and frameworks for sustainability into business models. The proposed architecture is multilevel and multiscale in order to achieve the instantiation of the sustainable value chain in any territory. The architecture promotes the incorporation of circular economy and holonic principles into new circular business models. This integrated perspective of business model can support the design and upgrade of the manufacturing companies in their respective industrial sectors. The conceptual model proposed is based on activity theory that considers the interactions between technical and social systems and allows the mitigation of the metabolic rift that exists between natural and social metabolism. This study contributes to the existing literature on circular economy, circular business models and activity theory by considering holonic paradigm concerns, which have not been explored yet. This research also offers a unique holonic architecture of circular business model by considering different levels, relationships, dynamism and contextualization (territory) aspects

    Rockets and feathers behaviour in the Spanish gasoline and diesel market: New evidence

    Get PDF
    In this paper we analyse the potential asymmetric response of retail prices for gasoline and diesel-fuel to changes in oil prices for the Spanish economy and its relation with the so-called ‘rockets and feathers’ behaviour. We show that the assumption made by previous studies, which use as the key explanatory variable the sign –positive or negativeof the change in international oil prices, is inadequate for the Spanish case and the magnitude of the change in international oil prices is also relevant. For small changes in international oil prices there is neither price asymmetry nor rockets and feathers behavior in the retail markets. However, price asymmetries in line with rockets and feathers behavior in retail gasoline and gasoil markets are present when these changes exceed a certain threshold. Following Martín-Moreno et al. (2018) we first apply an Auto-regressive Error Correction Model and endogenously estimate the threshold triggering the rockets and feathers behaviour. A time-varying nature for the dynamic response of retail prices to oil price shocks is revealed when we estimate the TAR-ECM model using rolling windows. Hence, in a second stage, we use a Markov-switching estimation of the model to test the robustness of the results given its suitability to changing environments. This study could have relevant policy implications for the Spanish gasoline and gasoil retail markets due to the ongoing debate on the existence of a rockets and feathers behavior in gasoline and gasoil retail markets between the Spanish regulatory body and the oil companies.Ministerio de Economía y Competitividad | Ref. ECO2015-67305-PMinisterio de Economía y Competitividad | Ref. ECO2015-68367-RXunta de Galicia | Ref. GRC2014/02

    The documentation archive as principal source for the study of independent theater during the Transition in Andalusia

    Get PDF
    El teatro independiente tuvo una gran relevancia como elemento de cambio durante la Transición política en España. Sin embargo, se trata de un movimiento sociocultural poco estudiado. De las carencias observadas durante el desarrollo de este trabajo de investigación nace el objetivo principal de este estudio: localizar y describir los fondos documentales que generaron las compañías teatrales independientes en Andalucía durante la Transición. Para abordar este objetivo se han consultado los principales archivos públicos de ámbito nacional; y en Andalucía los archivos autonómicos, provinciales, municipales y de instituciones universitarias y especializadas. Los resultados de este proyecto permitirán que se investigue sobre un campo de conocimiento prácticamente inexplorado y con el matiz que aportan las fuentes documentales escritas. También, con este trabajo, tratamos de poner de relevancia la importancia que supone para el conocimiento de nuestra historia la conservación, la sistematización y la difusión de su patrimonio documental cultural.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
    corecore