Diseño de un dispositivo multi-sensor para el tratamiento fisioterapeútico de la parálisis orofacial

At present, the treatment of facial paralysis is of two types: pharmacological and manual physical therapy. The improvement rate is 80%, leaving the rest with moderate to severe sequelae. A tool that facilitates the evaluation of the pathology and allows adjusting the treatment in a personalized way to the rehabilitator, increase the effectiveness and the prognosis. The main objective is the creation of a network of flexible and fully adaptable sensors that collect biosignals and can be used in consultation with the therapist in real time, providing complementary data to those that give the techniques of current evolution, electromyogram, electron beam and trunk reflex encephalic. Arduino will be the electronic device in charge of transmitting the collected signals, which are sent via bluetooth through a module that it incorporates and sent to the computer for the treatment and visualization of the data with the tool Matlab.Ingeniería, Industria y Construcció

Gestión de la reputación en redes P2P: algoritmo de reputación de p2people

In this paper, a new reputation management system is presented for a peer-to-peer platform called P2People. Due to peer-to-peer applications providing anonymity features, malicious peers collectives try to subvert these systems under self interests. So, additional mechanisms need to be implemented to increase the security at each node of the network. Based on human perception of trustworthiness, the P2People reputation algorithm tries to get accurate results in order to minimize the number of downloads and transactions from/with malicious peers, and at the same time to isolate them. The simulation results shown that this first approach gets to reduce hugely the number of corrupted files and the contact with undesirable peers in the network.Ingeniería, Industria y Construcció

Optimización de las prestaciones de la plataforma de colaboración P2P: p2people

In this paper, the performance optimization of the P2People platform is analyzed. For this purpose, the performance critical-points of P2P applications are examined firstly. Provided that P2People is based on P2P-JXTA architecture, the performance increase between JXTA releases is explored below. P2People optimization deals with the increase of its architecture throughput and the individual improvement of the different P2People modules. So, the performance increase strategies for these elements are shown and evaluated. Finally the experimental results probe that this optimization is well fitted.Ingeniería, Industria y Construcció

Medio EBG basado en estructuras simples en forma de L

In the present work a study of the prohibited frequency bands produce in a microstrip line when introducing inclusions of metallic elements with "L" shaped has been carried out. The inclusion of these structures on both sides of the transmission line causes the appearance of a broad bandgap within the region of frequencies of interest. It has been found that the existence of more than one row on either side of the line does not significantly modify the response. In order to extend the bandgap and make it more uniform, several modifications to the parameters and structure distribution has been proposed. It has been found that both the arrangement of a thicker dielectric sheet and the structure tapering can improve the response. Furthermore, they produce a decreasing of the fields and, therefore, unwanted radiation in nearby elements can be reduced.Ingeniería, Industria y Construcció

Novel fishnet-like chiral metamaterial structure with negative refractive index and low losses

In this work a composed chiral metamaterial structure constituted by the combination of a composite chiral metamaterial and a modified fishnet structure is presented and numerically analyzed. This new fishnet-like chiral metamaterial features two wide frequency bands wherein the refractive indices are negative and exhibits lower losses than its constituents do.This work has been partially supported by the Spanish Government MINECO through the ERDF co-funded Research Projects TEC2014-55463-C3-1-P and TEC2014-55463-C3-3-P

Chiral metamaterial structure with high optical activity based on conjugated omega particles

In this communication the authors present a novel chiral metamaterial structure formed by planar omega particles These omega particles, arranged in conjugated pairs, present high optical activity. Thanks to the high values of chirality, the structure provides negative refractive index with high figure of merit.This work has been supported by the Spanish Government MINECO through the Research Projects TEC2014-55463-C3-1-P, TEC2014-55463-C3-3-P and by the European Commission (ERDF)

Estudio de medios EBG basados en estructuras metálicas en forma de paralelepípedo

In this paper microstrip lines with periodic metallic structures on both sides have been studied. The basic unit cell is a parallelepiped with different metallization at the edges. The effects on the transmission in a standard microstrip line have been analysed by using both experimental and simulation (CST Microwave Studio®) techniques, obtaining an EBG behaviour similar to the one obtained with mushroom-like structures. The proposed structures present advantages in band gap size. Furthermore, the response does not dependent on the number of rows at the sides of the microstrip line.Ingeniería, Industria y Construcció

Estudio de doble lámina con estructuras quirales de cuatro manivelas bajo incidencia normal

A double plate with chiral structures based on three segment cranks is analysed for normal incidence and lineal polarization. Each structure is made with four three segment crank arranging a rectangular parallelepiped. These structures are distributed in a periodic configuration in each sheet, being the respective unit cells perfectly lined up. The response depends on spacing between plates. Interesting results are obtained for small spacing: the chiral behaviour depends on the spacing then the double sheet system can be used as tunable rotator.Ingeniería, Industria y Construcció

Diseño de medios EBG basados en estructuras quirales

In this work, a new EBG structure with inclusions of chiral elements is presented. We have studied the effect of crank type chiral inclusions on the propagation along a microstrip line and compared with the effects produced by mushroom type inclusions. It has been found that the inclusion of a row of structures of high chirality on both sides of a transmission line produces a band gap of wider bandwidth, to that obtained by the inclusion of other known elements used to create EBG media such as mushroom type structures. The current structure works in X-Band (8.2-12.4 GHz) but is easily applicable to other frequencies changing the size of crank inclusions.Ingeniería, Industria y Construcció

Design of electromagnetic band gap media based on crank-like chiral structures

A new EBG (Electromagnetic Band Gap) structure with chiral crank elements is presented and its effects on the electric field propagation along a microstrip line are analysed and compared with the effects produced by mushroom-type inclusions. Chiral crank inclusions are distributed along both sides of the strip and the corresponding results are compared with those obtained by other elements commonly used to create EBG media, mushroom-type structures. A single row of high chirality structures on both sides of a transmission line produces a band gap with a wider bandwidth than that obtained by the inclusion of other elements commonly used to create EBG media, such as mushroom-type structures. Unlike what happen with mushroomtype inclusions, more rows of chiral elements do not change significantly the central frequency and bandwidth of the band gap. The proposed structure works in X-Band (8.2-12.4 GHz) and it is easily adaptable to other frequencies by changing the size of the crank inclusions. Several samples have been made in FR-4 printed circuit board and a good agreement has been found between numerical analysis and experimental measurements.This work has been supported by the Ministerio de Economía y Competitividad of Spain (ERDF co-funded Research Projects PGC2018-098350-B-C21 and PGC2018-098350-B-C22