4,745 research outputs found
PREVIRNEC A new platform for cognitive tele-rehabilitation
Acquired Brain Injury (ABI), either caused by vascular or traumatic nature, is one of the most important causes for neurological disabilities. People who suffer ABI see how their quality of life decreases, due to the affection of one or some of the cognitive functions (memory, attention, language or executive functions). The traditional cognitive rehabilitation protocols are too expensive, so every help carried out in this area is justified. PREVIRNEC is a new platform for cognitive tele-rehabilitation that allows the neuropsychologist to schedule rehabilitation sessions consisted of specifically designed tasks, plus offering an additional way of communication between neuropsychologists and patients. Besides, the platform offers a knowledge management module that allows the optimization of the cognitive rehabilitation to this kind of patients
Quantum coherent control of highly multipartite continuous-variable entangled states by tailoring parametric interactions
The generation of continuous-variable multipartite entangled states is
important for several protocols of quantum information processing and
communication, such as one-way quantum computation or controlled dense coding.
In this article we theoretically show that multimode optical parametric
oscillators can produce a great variety of such states by an appropriate
control of the parametric interaction, what we accomplish by tailoring either
the spatio-temporal shape of the pump, or the geometry of the nonlinear medium.
Specific examples involving currently available optical parametric oscillators
are given, hence showing that our ideas are within reach of present technology.Comment: 14 pages, 5 figure
Energy efficiency considerations in integrated IT and optical network resilient infrastructures
The European Integrated Project GEYSERS - Generalised Architecture for Dynamic Infrastructure Services - is concentrating on infrastructures incorporating integrated optical network and IT resources in support of the Future Internet with special emphasis on cloud computing. More specifically GEYSERS proposes the concept of Virtual Infrastructures over one or more interconnected Physical Infrastructures comprising both network and IT resources. Taking into consideration the energy consumption levels associated with the ICT today and the expansion of the Internet in size and complexity, that incurring increased energy consumption of both IT and network resources, energy efficient infrastructure design becomes critical. To address this need, in the framework of GEYSERS, we propose energy efficient design of infrastructures incorporating integrated optical network and IT resources, supporting resilient end-to-end services. Our modeling results quantify significant energy savings of the proposed solution by jointly optimizing the allocation of both network and IT resources
Precision medicine in sepsis and septic shock: From omics to clinical tools
Endotype; Organ dysfunction; SepsisEndotipo; Disfunción de órganos; SepsisEndotip; Disfunció d'òrgans; SèpsiaSepsis is a heterogeneous disease with variable clinical course and several clinical phenotypes. As it is associated with an increased risk of death, patients with this condition are candidates for receipt of a very well-structured and protocolized treatment. All patients should receive the fundamental pillars of sepsis management, which are infection control, initial resuscitation, and multiorgan support. However, specific subgroups of patients may benefit from a personalized approach with interventions targeted towards specific pathophysiological mechanisms. Herein, we will review the framework for identifying subpopulations of patients with sepsis, septic shock, and multiorgan dysfunction who may benefit from specific therapies. Some of these approaches are still in the early stages of research, while others are already in routine use in clinical practice, but together will help in the effective generation and safe implementation of precision medicine in sepsis
QED Logarithms in the Electroweak Corrections to the Muon Anomalous Magnetic Moment
We employ an effective Lagrangian approach to derive the leading-logarithm
two-loop electroweak contributions to the muon anomalous magnetic moment, a_mu.
We show that these corrections can be obtained using known results on the
anomalous dimensions of composite operators. We confirm the result of Czarnecki
et al. for the bosonic part and present the complete sin^2 \theta_W dependence
of the fermionic contribution. The approach is then used to compute the
leading-logarithm three-loop electroweak contribution to a_mu. Finally we
derive, in a fairly model-independent way, the QED improvement of new-physics
contributions to a_mu and to the electric dipole moment (EDM) of the electron.
We find that the QED corrections reduce the effect of new physics at the
electroweak scale by 6% (for a_mu) and by 11% (for the electron EDM).Comment: 13 page
Bose-Einstein Condensation, Dark Matter and Acoustic Peaks
Scalar mediated interactions among baryons extend well above the Compton
wavelength, when they are embedded in a Bose-Einstein condensate composed of
the mediating particles. Indeed, this non-trivial environment results in an
infinite-ranged interaction. We show that if the Dark Matter of the Universe is
composed of such a condensate, the imprints of an interaction between baryonic
and Dark Matter could be manifest as anomalies in the peak structure of the
Cosmic Microwave Background.Comment: 11 pages, 2 figures; changes reflect published versio
2D-Tasks for Cognitive Rehabilitation
Neuropsychological Rehabilitation is a complex clinic process which tries to restore or compensate cognitive and behavioral disorders in people suffering from a central nervous system injury. Information and Communication Technologies (ICTs) in Biomedical Engineering play an essential role in this field, allowing improvement and expansion of present rehabilitation programs.
This paper presents a set of cognitive rehabilitation 2D-Tasks for patients with Acquired Brain Injury (ABI). These tasks allow a high degree of personalization and individualization in therapies, based on the opportunities offered by new technologies
Methodology to optimize fluid-dynamic design in a redox cell
[EN] The present work is aimed at the optimization of a redox cell design. The studied redox cell consists on a
device designed to convert the energy of reactants into electrical energy when a liquid electrolyte reacts
at the electrode in a conventional manner. In this particular sort of cells, the two electrolytes are present
and separated by a proton exchange membrane. Therefore, the flow of the electrolyte and the interaction
with the membrane takes a paramount importance for the general performance of the cell. A methodology
for designing the inlet part of the cell based on optimizing the uniformity of the flow and the initial
position of the membrane is presented in this study. This methodology, based on the definition and
optimization of several parameters related to the electrolyte flow in different regions of the geometry, is
depicted. The CFD (Computational Fluid Dynamics) model coupled with the statistical study pointed to
several practical conclusions on how to improve the final geometry construction of the redox cell. A
particular case study of redox cell is implemented in order to validate the proposed methodology[ES] El presente trabajo tiene como objetivo la optimización de un diseño de la batería redox. La pila redox estudiada consiste en un dispositivo diseñado para convertir la energía de los reactivos en energía eléctrica cuando un electrolito líquido reacciona en el electrodo de una manera convencional . En este tipo particular de células , los dos electrolitos están presentes y separados por una membrana de intercambio de protones . Por lo tanto , el flujo del electrolito y la interacción con la membrana tiene una importancia primordial para el rendimiento general de la célula . La metodología propuesta
para el diseño de la parte de entrada de la celda en base a la optimización de la uniformidad del flujo y la inicial posición de la membrana se presenta en este estudio . Esta metodología, basada en la definición y
optimización de varios parámetros relacionados con el flujo de electrolito en las diferentes regiones de la geometría , es representado . El modelo de CFD (Computational Fluid Dynamics ), junto con el estudio estadístico se refirió a varias conclusiones prácticas sobre la manera de mejorar la construcción geometría final de la pila redox . El estudio de caso particular de célula redox que se describe, se implementa con el fin de validar la metodología propuestaEscudero González, J.; López Jiménez, PA. (2014). Methodology to optimize fluid-dynamic design in a redox cell. Journal of Power Sources. 251(1):243-253. doi:10.1016/j.jpowsour.2013.11.058S243253251
Determination of the b quark mass at the M_Z scale with the DELPHI detector at LEP
An experimental study of the normalized three-jet rate of b quark events with
respect to light quarks events (light= \ell \equiv u,d,s) has been performed
using the CAMBRIDGE and DURHAM jet algorithms. The data used were collected by
the DELPHI experiment at LEP on the Z peak from 1994 to 2000. The results are
found to agree with theoretical predictions treating mass corrections at
next-to-leading order. Measurements of the b quark mass have also been
performed for both the b pole mass: M_b and the b running mass: m_b(M_Z). Data
are found to be better described when using the running mass. The measurement
yields: m_b(M_Z) = 2.85 +/- 0.18 (stat) +/- 0.13 (exp) +/- 0.19 (had) +/- 0.12
(theo) GeV/c^2 for the CAMBRIDGE algorithm. This result is the most precise
measurement of the b mass derived from a high energy process. When compared to
other b mass determinations by experiments at lower energy scales, this value
agrees with the prediction of Quantum Chromodynamics for the energy evolution
of the running mass. The mass measurement is equivalent to a test of the
flavour independence of the strong coupling constant with an accuracy of 7
permil.Comment: 24 pages, 10 figures, Accepted by Eur. Phys. J.
Search for charginos in e+e- interactions at sqrt(s) = 189 GeV
An update of the searches for charginos and gravitinos is presented, based on
a data sample corresponding to the 158 pb^{-1} recorded by the DELPHI detector
in 1998, at a centre-of-mass energy of 189 GeV. No evidence for a signal was
found. The lower mass limits are 4-5 GeV/c^2 higher than those obtained at a
centre-of-mass energy of 183 GeV. The (\mu,M_2) MSSM domain excluded by
combining the chargino searches with neutralino searches at the Z resonance
implies a limit on the mass of the lightest neutralino which, for a heavy
sneutrino, is constrained to be above 31.0 GeV/c^2 for tan(beta) \geq 1.Comment: 22 pages, 8 figure
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