Planar compact array with parasitic elements for MIMO systems

A compact planar array with parasitic elements is studied to be used in MIMO systems. Classical compact arrays suffer from high coupling which makes correlation and matching efficiency to be worse. A proper matching network improves these lacks although its bandwidth is low and may increase the antenna size. The proposed antenna makes use of parasitic elements to improve both correlation and efficiency. A specific software based on MoM has been developed to analyze radiating structures with several feed points. The array is optimized through a Genetic Algorithm to determine parasitic elements position in order to fulfill different figures of merit. The proposed design provides the required correlation and matching efficiency to have a good performance over a significant bandwidth

Evaluating the more suitable ISM frequency band for iot-based smart grids: a quantitative study of 915 MHz vs. 2400 MHz

IoT has begun to be employed pervasively in industrial environments and critical infrastructures thanks to its positive impact on performance and efficiency. Among these environments, the Smart Grid (SG) excels as the perfect host for this technology, mainly due to its potential to become the motor of the rest of electrically-dependent infrastructures. To make this SG-oriented IoT cost-effective, most deployments employ unlicensed ISM bands, specifically the 2400 MHz one, due to its extended communication bandwidth in comparison with lower bands. This band has been extensively used for years by Wireless Sensor Networks (WSN) and Mobile Ad-hoc Networks (MANET), from which the IoT technologically inherits. However, this work questions and evaluates the suitability of such a "default" communication band in SG environments, compared with the 915 MHz ISM band. A comprehensive quantitative comparison of these bands has been accomplished in terms of: power consumption, average network delay, and packet reception rate. To allow such a study, a dual-band propagation model specifically designed for the SG has been derived, tested, and incorporated into the well-known TOSSIM simulator. Simulation results reveal that only in the absence of other 2400 MHz interfering devices (such as WiFi or Bluetooth) or in small networks, is the 2400 MHz band the best option. In any other case, SG-oriented IoT quantitatively perform better if operating in the 915 MHz band.This research was supported by the MINECO/FEDER project grants TEC2013-47016-C2-2-R (COINS) and TEC2016-76465-C2-1-R (AIM). The authors would like to thank Juan Salvador Perez Madrid nd Domingo Meca (part of the Iberdrola staff) for the support provided during the realization of this work. Ruben M. Sandoval also thanks the Spanish MICINN for an FPU (REF FPU14/03424) pre-doctoral fellowship

The role of advanced waste-To-energy technologies in landfill mining

Publicado en: WIT Transactions on Ecology and the Environment, Volume 224, Issue 1, 20 September 2017, Pages 403-409Recently, the European Parliament has decided to include a specific reference to "Enhanced Landfill Mining" (ELFM) in the Landfill Directive proposing a regulatory framework for ELFM so as to permit the retrieval of secondary raw materials that are present in existing landfill sites. Recent studies are supporting ELFM since they consider that landfill mining would be economically feasible only if combined with energy recovery (i.e., waste-To-energy, WtE) and if a wide range of materials are recovered (i.e., waste-To-materials, WtM). In this study, a combined material (landfill mining) and energy (advanced WtE) recovery is proposed where the excavated waste (MSW refuse) can be directly recycled or pretreated and used in the production of refuse-derived fuel (RDF) for an advanced (gasification-based) WtE plant producing power and heat. Both material and energy recovery are challenging in the circular economy since contributes to a loop-closing objective in human activities. An exhaustive assessment of each particular landfill site must be carried out in order to determine the profitability of the ELFM.Ministerio de Economía y Competitividad ENE2012-31598Ministerio de Ciencia, Innovación y Universidades CTM2016-78089-RUniversidad de Sevilla Contrato de Acceso al Sistema Español de Ciencia, Tecnología e Innovación (VPPI-US

Números índices

Presentación de números índicesParcialmente financiado por el PIE13-02

Análisis conjunto de dos variables

Presentación del análisis conjunto de dos variablesParcialmente financiado por el PIE13-02

La emocionalidad del ser arte y moda

The emotionality of the being: Art and Fashion analyzes and seeks to understand the artistic work and philosophy behind the thought of Jackson Pollock and Action Painting. Through this, several themes are exposed for the understanding of art as an inspiration for fashion, how the pictorial space is handled in art and fashion, the understanding the expressiveness of textures, the use and power of color in creative work. This project seeks to deepen the knowledge about the evocation of feelings, which allows an item of functional use, to be seen also as an object of aesthetic appreciation. For this reason I will experiment with pictorial space so clothes are a reflection of my thoughts and emotions and have a dynamic character as well.La Emocionalidad del Ser: Arte y Moda analiza y busca comprender la obra artística y la filosofía detrás del pensamiento de Jackson Pollock y su pintura de acción. A través de esto, se abordaran varios temas para el entendimiento del arte como fuente de inspiración para la moda, como se maneja el espacio pictórico tanto en el arte como en la moda, la comprensión de la expresividad en las texturas, el uso y el poder del color. Este proyecto busca profundizar acerca de la evocación de los sentimientos, lo cual permite que una prenda de uso funcional, también sea un objeto de apreciación estética. Por esta razón se busca experimentar con el espacio pictórico para que las prendas sean el reflejo de mis pensamientos y emociones y tengan un carácter dinámico

Buenas prácticas de innovación docente en la Universidad de Córdoba

La iniciativa, cuyo desarrollo ha contado con un presupuesto de 1.000 euros, muestra la transición de la docencia clásica hacia un nuevo método basado en el uso de las herramientas web 2.0, en el que prima que el alumnado obtenga nuevas competencias y en el que pasa a definir y determinar su propio espacio de conocimiento y su relación con el profesorado y sus compañero