85 research outputs found
viscaUJI: campus inteligente como IDE local
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 (energÃa, 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 asà 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, polÃgonos
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
Introducción: No existe todavÃa suficiente evidencia en estudios clÃnicos 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 clÃnicas.
Sujetos y métodos: Se realizó un estudio computarizado de la marcha sobre 30 sujetos adultos
sanos (27,13
±
3,82 aËœnos) con un Ãndice 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
clÃnica.
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
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
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
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
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
sà 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
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
[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 µm and an average of 17695.1 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
[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
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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