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Listar por autor "Ortega Ramírez, Juan Antonio"
Mostrando ítems 1-20 de 191
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Ponencia
A Comparison of Objective and Subjective Sleep Quality Measurement in a Group of Elderly Persons in a Home Environment
Gaiduk, Maksym; Seepold, Ralf; Martínez Madrid, Natividad; Ortega Ramírez, Juan Antonio; Conti, Massimo; Orcioni, Simone; Penzel, Thomas; Scherz, Wilhelm Daniel; Perea, Juan José; Serrano Alarcón, Ángel; Weiss, Gerald (SpringerLink, 2020)The main aim of presented in this manuscript research is to compare the results of objective and subjective measurement ...
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Ponencia
A Context-Oriented System For Mobile Devices
Cuadrado Cordero, Ismael; Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio; González Abril, Luis (Universidad de Sevilla, 2011-06)Our work provides developers of context-based application for mobile devices a framework for developing comprehensive and ...
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Artículo
A framework for semiqualitative reasoning in engineering applications
Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (Taylor and Francis, 2002)In most cases the models for experimentation, analysis, or design in engineering applications take into account only ...
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Ponencia
A framework to translate UML class generalization into Java Code
Sánchez, Pedro; Letelier, Patricio; Pastor, Juan Ángel; Ortega Ramírez, Juan Antonio (SpringerLink, 2002-09)The concept of generalization used during analysis when building a class diagram has a close relationship with the notion ...
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Capítulo de Libro
A Home E-Health System for Dependent People Based on OSGI
Martín, Jaime; Seepold, Ralf; Martínez Madrid, Natividad; Álvarez García, Juan Antonio; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (Springer, 2009)This chapter presents a e-health system for dependent people installed in a home environment. After reviewing the state ...
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Ponencia
A location of robots proposal in collaborative environments
Álvarez, M. A.; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2008-06)This paper proposes a method to localize a robot in a collaborative enviroment when it can not do itself. In a enviroment ...
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Ponencia
A Model for Qualitative Colour Description and Comparison
Falomir, Zoe; Museros, Lledó; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (2011-07)A model for Qualitative Colour Description and Comparison (QCDC) is presented in this paper. Using Hue Saturation and ...
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Artículo
A model for the qualitative description of images based on visual and spatial features
Falomir, Zoe; Museros, Lledó; González Abril, Luis; Escrig, María Teresa; Ortega Ramírez, Juan Antonio (ScienceDirect, 2012)An approach that provides a qualitative description of any image is presented in this paper. The main visual features ...
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Artículo
A new approach to qualitative learning in time series
González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; Cuberos, Francisco Javier (ScienceDirect, 2009-08)In this paper the k-nearest-neighbours (KNN) based method is presented for the classification of time series which use ...
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Ponencia
A new back-propagation algorithm with momentum coefficient for medical datasets
Montes, V.; Chincho, J.M.; Álvarez, M.A.; Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2013)The standard backward propagation of errors algo rithm (abbreviated as back-propagation algorithm) is commonly used for ...
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Artículo
A new kernel to use with discretized temporal series
Cuberos García-Baquero, Francisco Javier; González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio (2007) -
Ponencia
A new Kernel to use with discretized Temporal Series
Cuberos, Francisco Javier; González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; Angulo, C. (Edición Digital @tres, 2005-06)In this papera new kernel, from statistical learning theory, is proposed to work with symbols chains (words) obtained from ...
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Artículo
A Novel Approach to Trojan Horse Detection in Mobile Phones Messaging and Bluetooth Services
Ortega Ramírez, Juan Antonio; Fuentes Brenes, Daniel; Álvarez García, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco (Korean Society for Internet Information, 2011)A method to detect Trojan horses in messaging and Bluetooth in mobile phones by means of monitoring the events produced ...
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Artículo
A portable ECG for recording and flexible development of algorithms and stress detection
Scherz, Wilhelm Daniel; Baun, Jannik; Seepold, Ralf; Martínez Madrid, Natividad; Ortega Ramírez, Juan Antonio (ScienceDirect, 2020)Cardiovascular diseases are directly or indirectly responsible for up to 38.5% of all deaths in Germany and thus represent ...
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Artículo
A probabilistic tri-class support vector machine
Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Angulo, Cecilio (2010) -
Ponencia
A proposal on an energy-saving policy on context based system
Cuadrado Cordero, Ismael; Soria Morillo, Luis Miguel (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2013-06)During the last decade, technology has created a new field in software development, known as pervasive computing, thank ...
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Ponencia
A Proposal to Evolving Towards Digital Twins in Healthcare
Angulo, Cecilio; González Abril, Luis; Raya, Cristóbal; Ortega Ramírez, Juan Antonio (SpringerLink, 2020-05)The main objective in this proposal is to orchestrate an ecosystem of manipulation of reliable and safe data, applied to ...
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Ponencia
A qualitative methodology to reduce features in classification problems
Álvarez, M. A.; González Abril, Luis; Ortega Ramírez, Juan Antonio; Soria Morillo, Luis Miguel (Northwestern University, 2011)In this paper, a preliminary methodology which quantifies the dependence between features in a data set by using the ...
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Ponencia
A quantitative methodology to identify related features in data sets
Álvarez, Miguel Ángel; González Abril, Luis; Ortega Ramírez, Juan Antonio; Soria Morillo, Luis Miguel; Cuberos Gallardo, Francisco José (Universidad de Sevilla, 2011-06)In this paper, a methodology which quantifies the dependence beteen features in a data set is developed. This methodology ...
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Ponencia
A Semiquantitative Approach to Study Semiqualitative Systems
Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel; Torres Valderrama, Jesús (Springer, 2002)In this paper is proposed a semiquantitative methodology to study models of dynamic systems with qualitative and quantitative ...