85 research outputs found

    viscaUJI: campus inteligente como IDE local

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    Ponència presentada a les III Jornadas Ibéricas de Infraestructura de Datos Espaciales (JIIDE 2012), celebrat a Madrid els dies 17, 18 i 19 d'octubre de 2012Con el objetivo de mejorar la monitorización y gestión de los recursos del Campus este proyecto integra la información disponible en un sistema de información que permite el acceso y la gestión de conjuntos de datos y servicios geográficos según el modelo definido para una IDE local. Esto nos permite relacionarnos con la información de nuestro entorno a diferentes escalas y en diferentes disciplinas y nos proporciona herramientas para realizar el análisis de los diferentes sistemas que componen la ciudad inteligente (energía, medio ambiente, movilidad, participación). Para ello se modelan espacios exteri ores e interiores, integrando datos de diferentes fuentes y formatos, y se geo rreferencian y representan de acuerdo con la plantilla CampusBaseMap de ES RI (Enviromental Systems Research Institute). Se contribuye así a su capa topográfica y se dispone de una base cartográfica completa y precisa en información y acorde con el entorno en su representación. La información asociada a cada espacio se integra en el LGIM (Local Government Information Model), lo que nos permite aprovechar las definiciones y relaciones entre los diferentes elementos que componen recintos como campus universitarios, parques de atracciones, polígonos industriales o ciudades. De entre las aplicaciones previstas, actualmente está implementado un cliente de visualización, un servicio de localización basado en un nomenclátor y un servicio de peticio nes, basados en plantillas de ESRI. Además, otras aplicaciones, como la monitorización de consumos energéticos, están en marcha

    Kinetic and kinematic analysis of midfoot joints of healthy subjects during walking: Clinical considerations

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    Introducción: No existe todavía suficiente evidencia en estudios clínicos respecto al comportamiento del mediopié en situaciones dinámicas como la marcha o la carrera. El presente estudio pretende analizar el comportamiento mecánico de las articulaciones del mediopié mediante un modelo multisegmental del pie, con especial atención a los momentos articulares y sus repercusiones clínicas. Sujetos y métodos: Se realizó un estudio computarizado de la marcha sobre 30 sujetos adultos sanos (27,13 ± 3,82 a˜nos) con un índice de postura del pie (FPI) neutro (entre 0 y +5). Se estimaron los ángulos y momentos articulares externos en 3 dimensiones mediante un modelo que considera 3 segmentos (antepié, retropié y hallux) y se analizó la evolución de dichas variables durante la marcha sobre la articulación del mediopié (articulación que conecta antepié y retropié) del pie derecho de todos los sujetos. Resultados: Los mayores momentos articulares observados se dieron en el plano sagital en flexión dorsal produciendo una tendencia al colapso o aplanamiento del pie durante la fase de apoyo de la marcha. Los momentos articulares registrados en los planos frontal y transverso fueron de una magnitud mucho menor que la observada en el plano sagital y de menor relevancia clínica. Discusión: El presente estudio aporta datos sobre el comportamiento mecánico de las articulaciones del mediopié en una muestra de 30 sujetos sanos con un FPI neutro. Este estudio muestra la importancia del estrés tensional al que se encuentran sometidas las estructuras blandas plantares durante la fase de apoyo de la marcha.Introduction: There is not enough evidence in form of clinical studies regarding the behavior of the midfoot joints in dynamic situations such us walking or running. The present work aims to study the mechanical behavior of midfoot joints with a multisegmented foot model with special interest in joint moments and their clinical significance. Subjects and methods: A computerized 3-dimensional gait study was performed on 30 healthy male adult subjects (27.13 ± 3.82 years) with a neutral Foot Posture Index (FPI) (from 0 to +5) during walking. Joint angle and external moments were estimated with a multisegment foot model that considers three separate segments (forefoot, rearfoot and hallux) and graphs and values of midfoot joint (joint connecting forefoot to rearfoot) were analyzed for the right foot of all participants. Results: Highest external moments were observed in the sagittal plane in dorsiflexion direction which tend to collapse the longitudinal arch during the stance phase. Moments registered in frontal and transverse planes were much lower than those observed in the sagittal plane and seemed to have lower clinical relevance. Discussion: The present study provides data about the mechanical behavior of midfoot joints in a healthy adult population with a neutral FPI. This work shows that plantar soft tissues are subjected to important tensional stress during the stance phase of walking

    3D characterisation of the dynamics of foot joints of adults during walking. Gait pattern identification

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    A detailed description of the kinematics and kinetics of the ankle, midtarsal and metatarsophalangeal joints of the feet of a healthy adult male population during barefoot walking is provided. Plots of the angles and moments in each plane during the stance phase are reported, along with the mean and standard deviation values of 87 different parameters that characterise the 3D dynamics of the foot joints. These parameters were used to check for similarities between subjects through a hierarchical analysis that allowed three different gait patterns to be identified, most of the differences corresponding to the frontal and transverse planes

    Iliopsoas and Gluteal Muscles Are Asymmetric in Tennis Players but Not in Soccer Players

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    To determine the volume and degree of asymmetry of iliopsoas (IL) and gluteal muscles (GL) in tennis and soccer players.IL and GL volumes were determined using magnetic resonance imaging (MRI) in male professional tennis (TP) and soccer players (SP), and in non-active control subjects (CG) (n = 8, 15 and 6, respectively).The dominant and non-dominant IL were hypertrophied in TP (24 and 36%, respectively, P<0.05) and SP (32 and 35%, respectively, P<0.05). In TP the asymmetric hypertrophy of IL (13% greater volume in the non-dominant than in the dominant IL, P<0.01) reversed the side-to-side relationship observed in CG (4% greater volume in the dominant than in the contralateral IL, P<0.01), whilst soccer players had similar volumes in both sides (P = 0.87). The degree of side-to-side asymmetry decreased linearly from the first lumbar disc to the pubic symphysis in TP (r = -0.97, P<0.001), SP (r = -0.85, P<0.01) and CG (r = -0.76, P<0.05). The slope of the relationship was lower in SP due to a greater hypertrophy of the proximal segments of the dominant IL. Soccer and CG had similar GL volumes in both sides (P = 0.11 and P = 0.19, for the dominant and contralateral GL, respectively). GL was asymmetrically hypertrophied in TP. The non-dominant GL volume was 20% greater in TP than in CG (P<0.05), whilst TP and CG had similar dominant GL volumes (P = 0.14).Tennis elicits an asymmetric hypertrophy of IL and reverses the normal dominant-to-non-dominant balance observed in non-active controls, while soccer is associated to a symmetric hypertrophy of IL. Gluteal muscles are asymmetrically hypertrophied in TP, while SP display a similar size to that observed in controls. It remains to be determined whether the different patterns of IL and GL hypertrophy may influence the risk of injury

    Effect of static foot posture on the dynamic stiffness of foot joints during walking

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    Background The static foot posture has been related to the development of lower limb injuries. Research question This study aimed to investigate the dynamic stiffness of foot joints during gait in the sagittal plane to understand the role of the static foot posture in the development of injuries. Methods Seventy healthy adult male subjects with different static postures, assessed by the Foot Posture Index (FPI) (30 normal, 20 highly pronated and 20 highly supinated), were recruited. Kinematic and kinetic data were recorded using an optical motion capture system and a pressure platform, and dynamic stiffness at the different stages of the stance was calculated from the slopes of the linear regression on the flexion moment-angle curves. The effect of foot type on dynamic stiffness and on ranges of motion and moments was analysed using ANOVAs and post-hoc tests, and linear correlation between dynamic stiffness and FPI was also tested. Results Highly pronated feet showed a significantly smaller range of motion at the ankle and metatarsophalangeal joints and also a larger range of moments at the metatarsophalangeal joint than highly supinated feet. Dynamic stiffness during propulsion was significantly greater at all foot joints for highly pronated feet, with positive significant correlations with the squared FPI. Highly supinated feet showed greater dynamic stiffness than normal feet, although to a lesser extent. Highly pronated feet during normal gait experienced the greatest decrease in the dorsiflexor moments during propulsion, normal feet being the most balanced regarding work generated and absorbed. Significance Extreme static foot postures show greater dynamic stiffness during propulsion and greater absorbed work, which increases the risk of developing injuries. The data presented may be used when designing orthotics or prostheses, and also when planning surgery that modifies joint stiffness

    UJI Smart Venues: Gestión de eventos en la Universitat Jaume I de Castelló

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    Ponènica presentada a les V Jornadas Ibéricas de Infraestructura de Datos Espaciales (JIIDE 2014), celebrat a Lisboa els dies 5-7 de novembre de 2014UJI SmartVenue es una aplicación móvil que se benef icia de los servicios de la implantación de una IDE (Infraestructura de Datos E spaciales) sectorial basada en la plataforma ArcGIS y los aplica a la ge stión de un evento. A partir de la base de datos espacial, y los servicios de ma pas, datos y geoprocesamiento asociados que proporcionan informa ción relativa a la universidad, se permite al organizador del evento a sí como a los asistentes situar cada actividad en su ubicación y horario det erminados para facilitar el acceso a las salas o valorar la asistencia entre ot ros. La información se presenta en mapas 2D o por realidad aumentada a tra vés de la cámara del dispositivo móvil. Los usuarios pueden realizar acciones como: buscar y guardar sus actividades favoritas, planificar su agenda, calcular el trayec to óptimo entre actividades, beneficiarse del sistema de posicionamiento en inte riores implantado en la Universitat Jaume I para calcular la ruta desde su posición real sin necesidad de conocer el edificio, y recibir alertas o publica r comentarios (en redes sociales) basados en su agenda y ubicación. Además, este servicio permite a la organización con ocer la asistencia y valoración de los diferentes actos y premiar o reor ganizar las actividades en consecuencia

    Alteration of Ventricular Fibrillation by Flecainide, Verapamil, and Sotalol

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    Background—The purpose of this study was to determine whether the myocardial electrophysiological properties are useful for predicting changes in the ventricular fibrillatory pattern. Methods and Results—Thirty-two Langendorff-perfused rabbit hearts were used to record ventricular fibrillatory activity with an epicardial multiple electrode. Under control conditions and after flecainide, verapamil, or d,l-sotalol, the dominant frequency (FrD), type of activation maps, conduction velocity, functional refractory period, and wavelength (WL) of excitation were determined during ventricular fibrillation (VF). Flecainide (1.9±0.3 versus 2.4±0.6 cm, P<0.05) and sotalol (2.1±0.3 versus 2.5±0.5 cm, P<0.05) prolonged WL and diminished FrD during VF, whereas verapamil (2.0±0.2 versus 1.7±0.2 cm, P<0.001) shortened WL and increased FrD. Simple linear regression revealed an inverse relation between FrD and the functional refractory period (r=0.66, P<0.0001), a direct relation with respect to conduction velocity (r=0.33, P<0.01), and an inverse relation with respect to WL estimated during VF (r=0.49, P<0.0001). By stepwise multiple regression, the functional refractory periods were the only predictors of FrD. Flecainide and sotalol increased the circuit size of the reentrant activations, whereas verapamil decreased it. The 3 drugs significantly reduced the percentages of more complex activation maps during VF. Conclusions—The activation frequency is inversely related to WL during VF, although a closer relation is observed with the functional refractory period. Despite the diverging effects of verapamil versus flecainide and sotalol on the activation frequency, WL, and size of the reentrant circuits, all 3 drugs reduce activation pattern complexity during VF.Chorro Gasco, Francisco Javier, [email protected] ; Guerrero Martinez, Juan Francisco, [email protected] ; Sanchis Fores, Juan, [email protected] ; Such Belenguer, Luis, [email protected]

    A minimally invasive methodology based on morphometric parameters for day 2 embryo quality assessment

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    [EN] The risk of multiple pregnancy to maternal fetal health can be minimized by reducing the number of embryos transferred. New tools for selecting embryos with the highest implantation potential should be developed. The aim of this study was to evaluate the ability of morphological and morphometric variables to predict implantation by analysing images of embryos. This was a retrospective study of 135 embryo photographs from 112 IVF ICSI cycles carried out between January and March 2011. The embryos were photographed immediately before transfer using Cronus 3 software. Their images were analysed using the public program ImageJ. Significant effects (P < 0.05), and higher discriminant power to predict implantation were observed for the morphometric embryo variables compared with morphological ones. The features for successfully implanted embryos were as follows: four cells on day 2 of development; all blastomeres with circular shape (roundness factor greater than 0.9), an average zona pellucida thickness of 13&#8201;µm and an average of 17695.1&#8201;µm2 for the embryo area. Embryo size, which is described by its area and the average roundness factor for each cell, provides two objective variables to consider when predicting implantation. This approach should be further investigated for its potential ability to improve embryo scoring.Molina Botella, MI.; Lázaro Ibáñez, E.; Pertusa, J.; Debón Aucejo, AM.; Martinez Sanchis, JV.; Pellicer Bofill, AJ. (2014). A minimally invasive methodology based on morphometric parameters for day 2 embryo quality assessment. Reproductive BioMedicine Online. 29(4):470-480. doi:10.1016/j.rbmo.2014.06.005S47048029

    Hydrological Modeling of the Effect of the Transition From Flood to Drip Irrigation on Groundwater Recharge Using Multi-Objective Calibration

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    [EN] The replacement of flood-irrigation systems by drip-irrigation technology has been widely promoted with the aim of a more sustainable use of freshwater resources in irrigated agriculture. However, evidence for an irrigation efficiency paradox emphasizes the need to improve our understanding of the impacts of irrigation transformations on water resources. Here, we developed a distributed hydrological modeling approach to investigate the spatiotemporal effect of flood and drip irrigation on groundwater recharge. The approach recognizes differences in the water balance resulting from the localized application of water in surface drip-irrigated fields and the more extensive application of water in flood irrigation. The approach was applied to the semi-arid Mediterranean region of Valencia (Spain) and calibrated using a multi-objective framework. Multiple process scales were addressed within the framework by considering the annual evaporative index, monthly groundwater level dynamics, and daily soil moisture dynamics. Daily simulations from 1994 to 2015 suggested that, in our hydroclimatic conditions, (a) annual recharge is strongly related to annual rainfall, which had a four times higher impact on recharge than the type of irrigation practice, (b) flood-irrigated recharge tends to exceed drip-irrigated recharge by 10% at annual time scales, (c) however, recharge response to a particular precipitation event is smaller in flood irrigation than in drip irrigation, and (d) 8¿18 rainfall events could generate more than half of the annual recharge in drip and flood irrigation, respectively. Our results highlight the importance of understanding the hydrological dynamics under different irrigation practices for supporting irrigation infrastructure policies.The authors thank the Coop Research Program on ¿Sustainability in Food Value Chains¿ of the ETH Zurich World Food System Center and the ETH Zurich Foundation for supporting this project. The Coop Research Program is supported by the Coop Sustainability Fund. The authors also acknowledge the financial support from the Spanish Ministry of Science and Innovation through the research project TETISCHANGE (RTI2018-093717-B-100). This work was additionally supported by the ADAPTAMED research project funded by the Spanish Ministry of Science and Innovation (RTI2018-101483-B-I00) with European FEDER funds. The support of Andreas Scheidegger (Eawag) for statistical questions is also acknowledgedPool, S.; Francés, F.; Garcia-Prats, A.; Puertes, C.; Pulido-Velazquez, M.; Sanchis Ibor, C.; Schirmer, M.... (2021). Hydrological Modeling of the Effect of the Transition From Flood to Drip Irrigation on Groundwater Recharge Using Multi-Objective Calibration. Water Resources Research. 57(8):1-19. https://doi.org/10.1029/2021WR029677S11957

    The Medieval and Modern Investigation Centre (CIMM). Documentary contributions

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    The present article is about the study of the medieval and modern painting in the Crown of Aragon with the documentation located for Centre Modern d Investigació Medieval (CIMM) of the Universitat Politècnica of València and the Universitat de Lleida. This study includes a total of eighteen documents, ten of which are previously unpublished. The remaining eight were known, but have been revised and completed in the archives and perfectly transcribed again for this publication. Although the first documents date from before 1450, these documents are very important for a full understanding of the stylistic switch to the late Gothic of Flemish influence that began in Valencia in the mid-fifteenth century, and continued until the early decades of the sixteenth. Although many of the documents on Jacomart are very brief, they contribute to a better overall profile of this important artist, painter to King Alfonso V the Magnanimous.Aliaga-Morell, J.; Company Climent, J.; Tolosa Robledo, LM.; Puig Sanchis, I.; Ramón Marqués, LN.; Rusconi, S.; Franco Llopis, B. (2014). The Medieval and Modern Investigation Centre (CIMM). Documentary contributions. Imago Temporis. Medium Aevum. VIII:329-356. http://hdl.handle.net/10251/65406S329356VII
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