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Listar por palabra clave "Entropy"

Mostrando ítems 1-20 de 34

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A holographic map of action onto entropy

Acosta, D.; Fernández de Córdoba Castellá, Pedro José; Isidro San Juan, José María; González-Santander Martínez, Juan Luis (IOP Publishing: Conference Series, 2012)

We propose a holographic correspondence between the action integral I describing the mechanics of a finite number of degrees of freedom in the bulk, and the entropy S of the boundary (a holographic screen) enclosing that ...
A View of P Systems from Information Theory

Sempere Luna, José María (Springer Verlag (Germany), 2017-02)

In this work we propose new view of P systems by using the framework of Information Theory. Given a cell-like P system with communication and evolution rules, we analyze the amount of information that it holds as the result ...
Active Learning for PolSAR image classification

Gonzálvez García, Pablo (Universitat Politècnica de València, 2013-09-17)

One of the biggest problems, when supervised learning techniques are used, for training classifier, is the necessity of a big amount of labelled samples, including the problems and costs of carry out the labelling of the ...
An entropy-based algorithm to solve the facility layout design problem

González-Cruz, María-Carmen; Gómez-Senent Martínez, Eliseo (PERGAMON-ELSEVIER SCIENCE LTD, 2010)

[EN] This paper presents a new design approach used in order to solve the facility layout problem The layout problem is viewed from the general perspective as a problem of the arrangement of elements within a system The ...
An Experimental Review on Obstructive Sleep Apnea Detection Based on Heart Rate Variability and Machine Learning Techniques

Padovano, Daniele; Martinez-Rodrigo, Arturo; Pastor, Jose M.; Rieta, J J; Alcaraz, Raúl (IEEE, 2020-10-30)

[EN] Obstructive sleep apnea (OSA) is a respiratory syndrome of high incidence in the general population and correlated with some cardiovascular diseases. Several techniques have been proposed in the last decades to find ...
Analysis of chemical and structural changes in kiwifruit (Actinidia deliciosa cv Hayward) through the osmotic dehydration

Castro Giráldez, Marta; Tylewicz, Urszula; Fito Suñer, Pedro José; Dalla Rosa, Marco; Fito Maupoey, Pedro (Elsevier, 2011-08)

[EN] Osmotic dehydration experiments of kiwifruit (Actinidiadeliciosa cv Hayward) were carried out in order to apply a nonlinear irreversible thermodynamic model. Samples were immersed into 65% (w/w) sucrose aqueous solution ...
Assessment of non-invasive time and frequency atrial fibrillation organization markers with unipolar atrial electrograms

Alcaraz, Raúl; Hornero, Fernando; Rieta, J J (IOP Publishing: Hybrid Open Access, 2011-01)

The standard electrocardiogram (ECG) is the most common non-invasive way to study atrial fibrillation (AF). In this respect, previous works have shown that the surface lead V 1 reflects mainly the dominant atrial frequency ...
Characterization of the complexity in short oscillating time series: An application to seismic airgun detonations

Miralles Ricós, Ramón; Carrión García, Alicia; Looney, D.; Lara Martínez, Guillermo-Fernán; D. Mandic (Acoustical Society of America, 2015-09)

Extracting frequency-derived parameters allows for the identification and characterization of acoustic events, such as those obtained in passive acoustic monitoring applications. Situations where it is difficult to achieve ...
Classification of paroxysmal and persistent atrial fibrillation in ambulatory ECG recordings

Alcaraz, Raúl; Sandberg, Frida; Sornmo, Leif; Rieta Ibañez, José Joaquín (Institute of Electrical and Electronics Engineers (IEEE), 2011-05)

The problem of classifying short atrial fibrillatory segments in ambulatory ECG recordings as being either paroxysmal or persistent is addressed by investigating a robust approach to signal characterization. The method ...
Comparative study of approximate entropy and sample entropy robustness to spikes

Molina Picó, Antonio; Cuesta Frau, David; Riobo Aboy, Pedro Mateo; Crespo Sánchez, María Cristina; Miró Martínez, Pau; Oltra Crespo, Sandra (Elsevier, 2011-10)

Objective: There is an ongoing research effort devoted to characterize the signal regularity metrics approximate entropy (ApEn) and sample entropy (SampEn) in order to better interpret their results in the context of ...
Cosmic Background Bose Condensation (CBBC)

Alfonso-Faus, Antonio; Fullana Alfonso, Màrius Josep (Springer Verlag (Germany), 2013-05-30)

Degeneracy effects for bosons are more important for smaller particle mass, smaller temperature and higher number density. Bose condensation requires that particles be in the same lowest energy quantum state. We propose a ...
Country Evaluation of Islamic Economic Criteria: An Application Using Entropy Weight and TOPSIS Methodologies

Mayor-Vitoria, F.; Garcia-Bernabeu, Ana; Abdul Rahman, Nor Aida; Mohammad, Mohammad Fakhrulnizam (Rajesh K. Deshmukh, 2021-02)

[EN] While Islamic economy is growing in all sectors, Halal compliance is carried out by more countries worldwide. The purpose of this paper is toestablish a methodology based on MCDM methods in order to create an accurate ...
Desarrollo de un método de predicción del éxito de la ablación quirúrgica concomitante de fibrilación auricular

Marcos Carrión, Andrés (Universitat Politècnica de València, 2019-07-31)

[ES] La cirugía concomitante Cox ¿ Maze es un procedimiento eficaz para el tratamiento de la fibrilación auricular en aquellos pacientes que requieren cirugía a corazón abierto debido a otra enfermedad cardíaca. Dado que, ...
Desarrollo de una herramienta para el cálculo de la entropía en imágenes de resonancia magnética cardíaca

Roca Ginés, Alberto (Universitat Politècnica de València, 2024-11-19)

[ES] La miocardiopatía dilatada (MCD) representa el tipo de miocardiopatía más común en la población global con una prevalencia de 1:2500 y constituye una causa importante de morbimortalidad cardiovascular, por insuficiencia ...
Diseño de herramientas basadas en teoría de la información para el análisis de información genómica asociada a enfermedades raras

Martínez Bravo, Luis Alberto (Universitat Politècnica de València, 2024-10-22)

[ES] Este Trabajo Fin de Grado presenta el desarrollo de dos herramientas computacionales diseñadas para el análisis de datos genómicos con un enfoque en la identificación de k-mers significativos. La primera herramienta ...
E-BOOT: Preventing Boot-Time Entropy

Vañó-García, Fernando; Marco-Gisbert, Héctor (Institute of Electrical and Electronics Engineers, 2020)

[EN] Due to the impracticability of generating true randomness by running deterministic algorithms in computers, boot-loaders and operating systems undergo the lack of enough supplies of entropy at boot-time. This problem ...
Entropy Optimization and Thermal Behavior of a Porous System With Considering Hybrid Nanofluid

Shah, Zahir; Ullah, Asad; Musa, Awad; Vrinceanu, Narcisa; Ferrándiz Bou, Santiago; Iqbal, Shahid; Deebani, Wejdan (Frontiers Media, 2022-07-01)

[EN] The aim of this research work is to study the performance of hybrid eclectically conducting nanofluid (MWCNT-Fe3O4) with entropy optimization impacts using the CVFEM approach. 3D and contour plots are two types of ...
Existence of an optimum dynamic coefficient of friction and the influence on human gait variability

Zamora Alvarez, Tomas Augusto; Alcantara Alcover, Enrique; Artacho Ramírez, Miguel Ángel; Valero Martínez, Marta (Elsevier, 2011-09)

The existence of a range of optimal coefficient of friction that encompasses safety and comfort has not been addressed before. This paper assesses the existence of such a range and its relationship with the variability of ...
Exploración dinámica de fronteras en entornos desconocidos basada en la entropía

Godoy-Calvo, Jaime; Lin-Yang, Dahui; Vázquez-Martín, Ricardo; García-Cerezo, Alfonso (Universitat Politècnica de València, 2023-03-31)

[EN] Exploration in disaster areas provides valuable, high-fidelity information to rescue personnel in disaster situations, with the potential to reduce the time for search and recovery of victims. This paper presents an ...
Feature extraction and similarity of movement detection during sleep, based on higher order spectra and entropy of the actigraphy signal: Results of the Hispanic Community Health Study/Study of Latinos

Iglesias-Martinez, Miguel Enrique; Garcia-Gomez, Juan M; Sáez Silvestre, Carlos; Fernández de Córdoba, Pedro; Conejero, J. Alberto (MDPI AG, 2018)

[EN] The aim of this work was to develop a new unsupervised exploratory method of characterizing feature extraction and detecting similarity of movement during sleep through actigraphy signals. We here propose some algorithms, ...