Search results for "image"
showing 10 items of 6818 documents
Prácticas "verdes" y co-creación de valor en la relación huésped-hotel: una aplicación en el contexto español y colombiano
2019
En los últimos años, la creciente conciencia internacional acerca del cambio climático junto con sus efectos sobre el medio ambiente natural se ha hecho evidente. En este sentido, la responsabilidad ambiental se está convirtiendo cada vez más en un reto importante para todos los sectores económicos y, el sector turístico no es una excepción. El cambio climático es un fenómeno que ya afecta al sector turístico, en especial a zonas de montaña y regiones costeras. Atendiendo a esta realidad, cada vez un mayor número de hoteles ha aumentado sus esfuerzos para preservar los recursos, incorporando prácticas “verdes” en sus actividades diarias para cumplir un doble objetivo: por un lado, ser perci…
Au commencement n'était pas le verbe. Sur la signification de l'image dans le Livre Rouge
2011
International audience
Motor imagery in unipolar major depression.
2014
Background: Motor imagery is a potential tool to investigate action representation, as it can provide insights into the processes of action planning and preparation. Recent studies suggest that depressed patients present specific impairment in mental rotation. The present study was designed to investigate the influence of unipolar depression on motor imagery ability. Methods: Fourteen right-handed patients meeting DSM-IV criteria for unipolar depression were compared to 14 matched healthy controls. Imagery ability was accessed by the timing correspondence between executed and imagined movements during a pointing task, involving strong spatiotemporal constraints (speed/accuracy trade-off par…
'I Show Off, Therefore I Am': The Politics of the Selfie
2016
International audience; Named word of the year by the OED in 2013, the “selfie” is a worldwide phenomenon. Many see these digital self-portraits as markers for the spread of narcissism or signs of the blurring of limits between the public and private spheres. Initially popular with young people, selfies were soon adopted by politicians who, in a mediatized society, are eager to adhere to new vogues and use digital trends to self-promote. Like “digital natives”, they attempt to go viral by turning their cellphones on themselves and tweeting. Contrary to more formal images (official portraits, campaign posters) where politicians are clearly packaged and marketed, self-snapped photos taken on …
Causality-Aware Convolutional Neural Networks for Advanced Image Classification and Generation
2023
Smart manufacturing uses emerging deep learning models, and particularly Convolutional Neural Networks (CNNs) and Generative Adversarial Networks (GANs), for different industrial diagnostics tasks, e.g., classification, detection, recognition, prediction, synthetic data generation, security, etc., on the basis of image data. In spite of being efficient for these objectives, the majority of current deep learning models lack interpretability and explainability. They can discover features hidden within input data together with their mutual co-occurrence. However, they are weak at discovering and making explicit hidden causalities between the features, which could be the reason behind the parti…
La imagen de la Física y la Química e implicaciones en su enseñanza aprendizaje
2009
La generalización de la educación y el aumento de las investigaciones sobre la mejora de la enseñanza-aprendizaje de las ciencias deberían de haber ido acompañadas de una mayor alfabetización científica de la sociedad. El trabajo que ahora presentamos va a mostrar que no sólo no es así, sino que hay una huída progresiva de los estudios de ciencias a nivel general y de los de Física y Química en particular. En este trabajo nos centraremos en plantear como problema la existencia de un desinterés en el estudio de las ciencias en la enseñanza obligatoria y a intentar buscar sus causas y los posibles aspectos en los que hay que trabajar para que esto no suceda.
A GEM-TPC in twin configuration for the Super-FRS tracking of heavy ions at FAIR
2018
The GEM-TPC [1] described herein will be part of the standard beam-diagnostics equipment of the Super-FRS [2] . This chamber will provide tracking information for particle identification at rates up to 1 MHz on an event-by-event basis. The key requirements of operation for these chambers are: close to 100% tracking efficiency under conditions of high counting rate, spatial resolution below 1 mm and a superb large dynamic range covering projectiles from Z=1 up to Z=92. The current prototype consists of two GEM-TPCs inside a single vessel, which are operating independently and have electrical drift fields in opposite directions. The twin configuration is done by flipping one of the GEM-TPCs o…
Factores radiológicos predictivos de accesibilidad quirúrgica a la fosa pterigopalatina
2020
La fosa pterigopalatina es una pequeña región anatómica con forma de pirámide invertida, localizada a caballo entre la base del cráneo y el macizo facial. Es un espacio pequeño y estrecho, estructuralmente complicado y de difícil accesibilidad quirúrgica. En la fosa se aloja el ganglio esfenopalatino, que está implicado en una amplia variedad de enfermedades relacionadas con el dolor facial de origen neurovegetativo, como la cefalea en racimos. La reciente aparición de técnicas basadas en la neuromodulación del ganglio esfenopalatino para el tratamiento de cefaleas en racimo refractarias hace imprescindible profundizar en el conocimiento de la fosa pterigopalatina y de sus vías de acceso. E…
A Stochastic Decision Process Model for Optimization of Railway and Tramway Track Maintenance by means of Image Processing Technique
2013
One of the key targets for an efficient transport network management is the search for proper maintenance policies to guarantee acceptable safety and quality standards in the travel and to optimize available resource allocation. Methodologically, the proposed model presented in this paper uses the stochastic dynamic programming and in particular Markov decision processes applied to the rail wear conditions for the railway and tramway network. By performing the integrated analysis of the classes of variables which characterize the rail quality (in terms of safety), the proposed mathematical approach allows to find the solutions to the decision-making process related to the probability of det…
Automated Railway Signs Detection. Preliminary Results
2019
Abstract Nowadays safety in railways is mostly achieved by automated system technologies such as ERTMS/ETCS. Nevertheless, on local railways (suburban and regional lines) several tasks still depend on the choices and actions of a human crew. With the aim to improve safety in such type of railways, this research proposes a system for the automatic detection and recognition of railway signs by means of the digital image processing technique. First field applications, carried out on the Italian railway network, show that the proposed system is very accurate (the percentage of correctly detected railway signs is about 97%), even at high train speeds.