Search results for "EFE"
showing 10 items of 5785 documents
Implicaciones evolutivas de la transmisión colectiva de virus
2022
Es habitual asumir en virología que las partículas virales dispersan de forma libre e independiente durante su transmisión entre células, tejidos, órganos y hospedadores. Sin embargo, esta visión ha sido cuestionada recientemente por la caracterización de múltiples estrategias que los virus emplean para transmitirse colectivamente. Entre ellas se encuentran las llamadas unidades infecciosas colectivas, que incluyen agregados virales, viriones poliploides, vesículas extracelulares o estructuras específicas como los cuerpos de oclusión; pero también diversos modos de transmisión directa y masiva de viriones entre células. En principio, la agrupación de la progenie viral disminuye el número de…
Optimization of Delayed-State Kalman-Filter-based Algorithm via Differential Evolution for Sensorless Control of Induction Motors
2010
This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a cla…
Photoluminescence of SiO2 under excitation by synchrotron radiation above the fundamental absorption edge
2008
El Portfolio Europeo de las Lenguas (PEL): herramienta de evaluación de la composición escrita en español como lengua extranjera
2013
Introducción Esta tesis pretende dar respuesta a uno de los desafíos que enfrentan los profesores de lenguas segundas (L2): mejorar la calidad de la evaluación de la expresión escrita. Partimos de la base del Marco Común Europeo de Referencia para las Lenguas (MCER), publicado por el Consejo de Europa con la intención de orientar la enseñanza y evaluación de lenguas, y del Portfolio Europeo de las Lenguas (PEL), cuyo propósito es aplicar en el aula los principios del MCER. Nos preguntamos si el PEL, que ha sido ampliamente experimentado en Educación Primaria y Secundaria, puede ser también útil como herramienta de evaluación de la composición escrita en niveles universitarios con estudiante…
»just de niillä oli sovmorgon» : Kulturella och pragmatiska aspekter på kodväxling i tvåspråkiga ungdomssamtal i Haparanda, Stockholm och Helsingfors
2017
The aim of the study is to explore situational, cultural and pragmatic factors that might trigger code-switching during informal conversations outside of the classroom at school among bilingual adolescents in Haparanda, Helsinki and Stockholm. An attempt is made to clarify different functions of code-switching, i.e. why bilingual adolescents code-switch from Swedish to Finnish and vice versa. The conversational data, consisting of video-recorded group and pair conversations, was collected in 2014–2015 at six junior high schools in Haparanda, Helsinki and Stockholm. The analysis of the data is qualitative. The theoretical framework is found in the field of translanguaging, which aims to desc…
A Curvature Based Method for Blind Mesh Visual Quality Assessment Using a General Regression Neural Network
2016
International audience; No-reference quality assessment is a challenging issue due to the non-existence of any information related to the reference and the unknown distortion type. The main goal is to design a computational method to objectively predict the human perceived quality of a distorted mesh and deal with the practical situation when the reference is not available. In this work, we design a no reference method that relies on the general regression neural network (GRNN). Our network is trained using the mean curvature which is an important perceptual feature representing the visual aspect of a 3D mesh. Relatively to the human subjective scores, the trained network successfully asses…
Claves vertebradoras del modelo de justicia en el siglo XXI
2021
The 21st Century presents a dynamic, international, digital, changing, agile, and fast Society, that demands an adequated Justice System. The Incorporation due to Globalization of Keys such a Supranationality, Internationalization, Efficiency, Feminization, Technology, Algorithms and Artificial Intelligence, are involved in the changes of the new look of Justice.
Dynamic of freshness perception in plain yoghurts temporal dominance of sensations
2013
Communication orale ; http://www.pangborn2013.com/; International audience
Il fenomeno dell’infibulazione: studio clinico e psicopatologico su un gruppo di immigrate in Sicilia
2004
Obiettivi. Scopo della nostra ricerca è stato quello di esplorare il disagio, il malessere, la sofferenza psichica legata alle MGF, effettuando uno studio clinico su un gruppo di donne sottoposte ad MGF., attraverso la valutazione di alcune aree come la sessualità, le strategie e gli stili difensivi, il livello e la qualità della mentalizzazione e quindi le capacità di coping. Metodi. Un protocollo che comprende Coloured Progressive Matrices; State-Trate Anxiety Inventory; Storie Disegnate di G. Trombini; Favole di L. Düss; un’intervista clinica, è stato proposto a 20 donne che hanno subito una MGF nel proprio paese di origine. Risultati. I risultati emersi pongono in evidenza il ruolo dei …