NameOrtega Ramírez, Juan Antonio
DepartmentLenguajes y Sistemas Informáticos
Knowledge areaLenguajes y Sistemas Informáticos
Professional categoryCatedrático de Universidad
E-mailRequest
           
  • No. publications

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PhD Thesis
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Design and development of comprehensive digital solutions with application in the medical field: Human sleep analysis

Gaiduk, Maksym; Ortega Ramírez, Juan Antonio; Seepold, Ralf (2022)
The influence of sleep on human life, including physiological, psychological, and mental aspects, is remarkable. Therefore, ...
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Initial evaluation of substituting a sleep diary by smartwatch measurement

Gaiduk, Maksym; Seepold, Ralf; Martínez Madrid, Natividad; Orcioni, Simone; Conti, Massimo; Ortega Ramírez, Juan Antonio (ScienceDirect, 2022)
Healthy sleep is required for sufficient restoration of the human body and brain. Therefore, in the case of sleep disorders, ...
Article
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Statistical validation of synthetic data for lung cancer patients generated by using generative adversarial networks

González Abril, Luis; Angulo, Cecilio; Ortega Ramírez, Juan Antonio; Lopez-Guerra, José-Luis (MDPI, 2022)
The development of healthcare patient digital twins in combination with machine learning technologies helps doctors in ...
Article
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Estimation of Sleep Stages Analyzing Respiratory and Movement Signals

Gaiduk, Maksym; Perea Rodríguez, Juan José; Seepold, Ralf; Martínez Madrid, Natividad; Penzel, Thomas; Glos, Martin; Ortega Ramírez, Juan Antonio (IEEE, 2021)
The scoring of sleep stages is an essential part of sleep studies. The main objective of this research is to provide an ...
Article
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Extrapolation of weight from smart scale data

Caballero, Pablo; Ortega Ramírez, Juan Antonio; González Abril, Luis (ScienceDirect, 2021)
In the area of human digital twins, the designed model should be as close as possible to the reality. The weight variable ...
Article
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Generative adversarial networks for anonymized healthcare of lung cancer patients

González Abril, Luis; Angulo, Cecilio; Ortega Ramírez, Juan Antonio; López Guerra, José Luis (MDPI, 2021)
The digital twin in health care is the dynamic digital representation of the patient’s anatomy and physiology through ...
Presentation
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Non-invasive devices for respiratory sound monitoring

Troncoso, Ángela; Ortega Ramírez, Juan Antonio; Seepold, Ralf; Martínez Madrid, Natividad (Elsevier, 2021)
Respiratory diseases are leading causes of death and disability in the world. The recent COVID-19 pandemic is also affecting ...
Presentation
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Extrapolation of weight from smart scale data

Caballero, Pablo; Ortega Ramírez, Juan Antonio; González Abril, Luis (Elsevier, 2021)
In the area of human digital twins, the designed model should be as close as possible to the reality. The weight variable ...
Article
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Digital health and care study on elderly monitoring

Gaiduk, Maksym; Seepold, Ralf; Martínez Madrid, Natividad; Ortega Ramírez, Juan Antonio (MDPI, 2021)
Sustainable technologies are being increasingly used in various areas of human life. While they have a multitude of benefits, ...
Presentation
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Embedded system for non-obtrusive sleep apnea detection

Gaiduk, Maksym; Orcioni, Simone; Conti, Massimo; Seepold, Ralf; Penzel, Thomas; Martínez Madrid, Natividad; Ortega Ramírez, Juan Antonio (IEEE, 2020)
This document presents a new complete standalone system for a recognition of sleep apnea using signals from the pressure ...
Presentation
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RR interval analysis for the distinction between stress, physical activity and no activity using a portable ECG

Scherz, Wilhelm Daniel; Seepold, Ralf; Martínez Madrid, Natividad; Crippa, Paolo; Ortega Ramírez, Juan Antonio (IEEE, 2020)
Methods based exclusively on heart rate hardly allow to differentiate between physical activity, stress, relaxation, and ...
Presentation
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A Proposal to Evolving Towards Digital Twins in Healthcare

Angulo, Cecilio; González Abril, Luis; Raya, Cristóbal; Ortega Ramírez, Juan Antonio (SpringerLink, 2020)
The main objective in this proposal is to orchestrate an ecosystem of manipulation of reliable and safe data, applied to ...
Article
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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 ...
Presentation
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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 ...
Article
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Can Virtual Reality be used as a significant stressor for studies using ECG?

Scherz, Wilhelm Daniel; Corcoba Magaña, Víctor; Seepold, Ralf; Martínez Madrid, Natividad; Ortega Ramírez, Juan Antonio (ScienceDirect, 2020)
In previous studies, we used a method for detecting stress that was based exclusively on heart rate and ECG for differentiation ...
Article
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Non-obtrusive system for overnight respiration and heartbeat tracking

Gaiduk, Maksym; Wehrle, Dennis; Seepold, Ralf; Ortega Ramírez, Juan Antonio (ScienceDirect, 2020)
Polysomnography is a gold standard for a sleep study, and it provides very accurate results, but its cost (both personnel ...
Article
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Comparison of sleep characteristics measurements: a case study with a population aged 65 and above

Gaiduk, Maksym; Seepold, Ralf; Ortega Ramírez, Juan Antonio; Martínez Madrid, Natividad (ScienceDirect, 2020)
Good sleep is crucial for a healthy life of every person. Unfortunately, its quality often decreases with aging. A common ...
Presentation
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Recognition of Sleep/Wake States analyzing Heart Rate, Breathing and Movement Signals

Gaiduk, Maksym; Seepold, Ralf; Penzel, Thomas; Ortega Ramírez, Juan Antonio; Glos, Martin; Martínez Madrid, Natividad (2019)
This document presents an algorithm for a nonobtrusive recognition of Sleep/Wake states using signals derived from ECG, ...
Presentation
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Home Hospital e-Health Centers for Barrier-Free and Cross-Border Telemedicine

Seepold, Ralf; Gaiduk, Maksym; Ortega Ramírez, Juan Antonio; Conti, Massimo; Orcioni, Simone; Martínez Madrid, Natividad (SpringerLink, 2019)
The goal of the presented project is to develop the concept of home ehealth centers for barrier-free and cross-border ...
PhD Thesis
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Energy and performance-aware scheduling and shut-down models for efficient cloud-computing data centers.

Fernández Cerero, Damián; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (2018)
This Doctoral Dissertation, presented as a set of research contributions, focuses on resource efficiency in data centers. ...
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Automatic sleep stages classification using respiratory, heart rate and movement signals

Gaiduk, Maksym; Penzel, Thomas; Ortega Ramírez, Juan Antonio; Seepold, Ralf (IOPScience, 2018)
This paper presents an algorithm for non-invasive sleep stage identification using respiratory, heart rate and movement ...
Presentation
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Sensor-mesh-based system with application on sleep study

Gaiduk, Maksym; Vunderl, Bruno; Seepold, Ralf; Ortega Ramírez, Juan Antonio; Penzel, Thomas (Springer, 2018)
The process of restoring our body and brain from fatigue is directly depending on the quality of sleep. It can be determined ...
Article
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Energy policies for data-center monolithic schedulers

Fernández Cerero, Damián; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (Elsevier, 2018)
Cloud computing and data centers that support this paradigm are rapidly evolving in order to satisfy new demands. These ...
Article
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Thematic issue on human-centred ambient intelligence: Cognitive approaches, reasoning and learning

Falomir, Zoe; Ortega Ramírez, Juan Antonio; Martínez Madrid, Natividad; Guesguen, Hans (IOS Press, 2017)
This editorial presents advances on Human-centred Ambient Intelligence applications which take into account cognitive ...
Presentation
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Pattern recognition techniques and classification sets supporting behavioural tagging when using a limited number of body sensors

Scherz, Wilhelm Daniel; Ortega Ramírez, Juan Antonio; Seepold, Ralf; Conti, Massimo (Springer Nature Singapore, 2017)
Stress and physical activities are important aspects of life of people. Body reactions on stress and on physical activities ...
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A Sensor Grid for Pressure and Movement Detection Supporting Sleep Phase Analysis

Gaiduk, Maksym; Kuhn, Ina; Seepold, Ralf; Ortega Ramírez, Juan Antonio; Martínez Madrid, Natividad (SpringerLink, 2017)
Sleep quality and in general, behavior in bed can be detected using a sleep state analysis. These results can help a subject ...
PhD Thesis
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An adaptive and rule based driving system for energy-e cient and safe driving behaviour

Yay, Emre; Ortega Ramírez, Juan Antonio; Martínez Madrid, Natividad (2016)
Saving energy and protecting the environment became fundamental for society and politics, why several laws were enacted ...
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Discrete classification technique applied to TV advertisements liking recognition system based on low‑cost EEG headsets

Soria Morillo, Luis Miguel; Álvarez García, Juan Antonio; González Abril, Luis; Ortega Ramírez, Juan Antonio (BioMed Central, 2016)
Background: In this paper a new approach is applied to the area of marketing research. The aim of this paper is to recognize ...
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Performance of Algorithms for Interval Discretization of Biomedical Signals

Soria Morillo, Luis Miguel; González Abril, Luis; Ortega Ramírez, Juan Antonio (Springer, 2016)
A methodology to quantify the dependence be tween features using the Ameva discretization algorithm and the advantages of ...
Article
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Detecting the adherence of driving rules in an energy-efficient, safe and adaptive driving system

Yay, Emre; Martínez Madrid, Natividad; Ortega Ramírez, Juan Antonio (Elsevier, 2016)
An adaptive and rule-based driving system is being developed that tries to improve the driving behavior in terms of the ...
Presentation
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Stress Determent via QRS Complex Detection, Analysis and Pre-processing

Scherz, Wilhelm Daniel; Ortega Ramírez, Juan Antonio; Seepold, Ralf; Martínez Madrid, Natividad (SpringerLink, 2016)
Stress is recognized as a predominant disease with raising costs for rehabilitation and treatment. Currently there several ...
Presentation
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Heart Rate Variability Indicating Stress Visualized by Correlations Plots

Scherz, Wilhelm Daniel; Ortega Ramírez, Juan Antonio; Martínez Madrid, Natividad; Seepold, Ralf (SpringerLink, 2015)
Stress is recognized as a factor of predominant disease and in the future the costs for treatment will increase. The ...
Article
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Energy wasting at internet data centers due to fear

Fernández Montes González, Alejandro; Fernández Cerero, Damián; González Abril, Luis; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio (Elsevier, 2015)
The fear experienced by data center administrators presents an ongoing problem due to the low percentage of machines that ...
Presentation
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Advertising Liking Recognition Technique Applied to Neuromarketing by Using Low-Cost EEG Headset

Soria Morillo, Luis Miguel; Álvarez García, Juan Antonio; González Abril, Luis; Ortega Ramírez, Juan Antonio (Springer, 2015)
In this paper a new neuroscience technique is applied into Marketing, which is becoming commonly known as the field of ...
Article
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Low Energy Physical Activity Recognition System on Smartphones

Soria Morillo, Luis Miguel; González Abril, Luis; Ortega Ramírez, Juan Antonio; Álvarez de la Concepción, Miguel Ángel (MDPI, 2015)
An innovative approach to physical activity recognition based on the use of discrete variables obtained from accelerometer ...
Presentation
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Plataforma para gestión de información de ciudadanos de una SmartCity

Fernández Rodríguez, Jorge Yago; Arcos García, Álvaro; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús; Arias Fisteus, Jesús; Corcoba Magaña, Victor; Muñoz Organero, Mario; Sánchez Fernández, Luis (2015)
El aumento de la población en áreas urbanas y el ritmo de vida cada vez más sedentario es una preocupación creciente. Por ...
Presentation
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Evaluating Wearable Activity Recognition and Fall Detection Systems

Álvarez García, Juan Antonio; Soria Morillo, Luis Miguel; Álvarez de la Concepción, Miguel Ángel; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (SpringerLink, 2014)
Activity recognition (AR) and fall detection (FD) research areas are very related in assistance scenarios but evolve ...
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Software reference architecture for smart environments: Perception

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Sánchez Venzalá, José I.; González Abril, Luis (Elsevier, 2014)
With the increase of intelligent devices, ubiquitous computing is spreading to all scopes of people life. Smart home (or ...
Article
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Discrete techniques applied to low-energy mobile human activity recognition. A new approach

Álvarez de la Concepción, Miguel Ángel; Soria Morillo, Luis Miguel; González Abril, Luis; Ortega Ramírez, Juan Antonio (Elsevier, 2014)
Human activity recognition systems are currently implemented by hundreds of applications and, in recent years, several ...
Presentation
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A proposal on an energy-saving policy on context based system

Cuadrado Cordero, Ismael; Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2013)
During the last decade, technology has created a new field in software development, known as pervasive computing, thank ...
Presentation
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Energy Efficient Resource Usage in Data Centers: GreenDoop

Fernández Cerero, Damián; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2013)
The spread of cloud computing has increased recent data center size and usage. Because of this, the op­timization of data ...
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Measures of Similarity Between Objects Based on Qualitative Shape Descriptions

Falomir, Zoe; González Abril, Luis; Museros, Lledó; Ortega Ramírez, Juan Antonio (Taylor & Francis, 2013)
A computational approach for comparing qualitative shape descriptions (QSDs) of objects within digital images is presented. ...
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A study on output normalization in multiclass SVMs

González Abril, Luis; Velasco Morente, Francisco; Angulo, C.; Ortega Ramírez, Juan Antonio (ScienceDirect, 2013)
The use of binary support vector machines (SVMs) in multi-classification is addressed in this paper. Margins associated ...
PhD Thesis
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Energy saving policies in grid computing and smart environments

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; González Abril, Luis (2013)
This work studies the problem of energy consumption growth in two spheres: Grid-Computing and Smart Environments. These ...
Presentation
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Comparing Energy Efficiency Of Drivers And Vehicles Using Data Envelopment Analysis

Fernández Montes González, Alejandro; Álvarez García, Juan Antonio; Fernández Cerero, Damián; Corcoba Magaña, Victor; Muñoz, M.; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2013)
In this paper, we propose a new methodology to compare and promote efficient driving by providing feedback to the user. ...
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Hi-Res activity recognition system based on EEG and WoT

Soria Morillo, Luis Miguel; Álvarez, M.A.; Ortega Ramírez, Juan Antonio; Vergara, R. (Universidad de Sevilla, 2013)
Nowadays, the recognition of physical activity (PA) is a well-known problem with many solutions. Sev eral kind of algorithms, ...
Presentation
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Activity Recognition System Using Non-intrusive Devices through a Complementary Technique Based on Discrete Methods

Álvarez de la Concepción, Miguel Ángel; Soria Morillo, Luis Miguel; González Abril, Luis; Ortega Ramírez, Juan Antonio (Springer, 2013)
This paper aims to develop a cheap, comfortable and, spe cially, efficient system which controls the physical activity ...
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An approach to a reference model for a sentient smart city

Sánchez Venzalá, José I.; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2013)
The interest about Smart City concept has in creased in recent years. In fact, Smart Cities is ex pected to improve cityzens ...
Presentation
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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 ...
Article
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An adaptive methodology to discretize and select features

Álvarez de la Concepción, Miguel Ángel; González Abril, Luis; Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio (SciEdu Press, 2013)
A lot of significant data describing the behavior or/and actions of systems can be collected in several domains. These ...
Patent. Invention
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Dispositivo, sistema y método de localización y seguimiento energéticamente eficiente

Ortega Ramírez, Juan Antonio; Soria Morillo, Luis Miguel; Álvarez García, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Torres Varderrama, Jesús; Álvarez de la Concepción, Miguel Ángel; Fernández-Montes González, Alejandro; Fuentes Brenes, Daniel; Sánchez Venzalá, José Ignacio; Bellido Romero, Antonio Manuel (Oficina Española de Patentes y Marcas (OEPM), 2012)
Dispositivo de seguimiento y localización energéticamente eficiente, sistema y método que implementa dicho dispositivo, ...
Presentation
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ARTEMISA: Architecture of an eco-driving assistant based on the anticipation

Corcoba Magaña, Víctor; Muñoz Organero, Mario; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Ortega Ramírez, Juan Antonio (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
This paper presents the architecture of an ecodriving assistant. The assistant evaluates the fulfilment of classic eco-driving ...
Presentation
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An extended chronicle discovery approach to find temporal patterns between sequences

Álvarez, M.A.; Subias, A.; Travé-Massuyès, L.; González Abril, Luis; Ortega Ramírez, Juan Antonio; Ortega Ramírez, Juan Antonio (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
Sequences of events describing the behavior and actions of users or systems can be collected in several domains. An episode ...
Article
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Online motion recognition using an accelerometer in a mobile device

Fuentes, D.; González Abril, Luis; Angulo, C.; Ortega Ramírez, Juan Antonio (ScienceDirect, 2012)
This paper introduces a new method to implement a motion recognition process using a mobile phone fitted with an accelerometer. ...
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Capa de abstracción de dispositivos para el diseño de software para entornos inteligentes

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Muñoz Organero, Mario; Córdoba Magaña, V. (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
La popularización de la computación ubicua y la inteligencia ambiental se ha visto potenciada por el incremento de los ...
Article
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A similarity measure between videos using alignment, graphical and speech features

Fuentes, D.; Bardeli, R.; Ortega Ramírez, Juan Antonio; González Abril, Luis (ScienceDirect, 2012)
A novel video similarity measure is proposed by using visual features, alignment distances and speech transcripts. First, ...
Article
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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 ...
Presentation
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Activity Recognition System Using AMEVA Method

Soria Morillo, Luis Miguel; González Abril, Luis; Álvarez de la Concepción, Miguel Ángel; Ortega Ramírez, Juan Antonio (Springer, 2012)
This article aims to develop a minimally intrusive system of care and monitoring. Furthermore, the goal is to get a cheap, ...
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Aproximación a los sensores biométricos para medir el perfil de stress

Ortega Ramírez, Juan Antonio; Seepold, Ralf; Martínez Madrid, Natividad; Martínez, J.; Fernández Montes González, Alejandro (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
n este artículo se realiza un estudio sobre los sen sores biométricos que pueden ayudar a tomar me didas sobre el estrés ...
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The CICA GRID: A Cloud Computing Infrastructure on Demand with Open Source Technologies

Álvarez, M. A.; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; González Abril, Luis (SciTePress, 2012)
A new approach technology to enable the expansion and replication of resources on demand is presented in this paper. This ...
Article
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Outdoor exit detection using combined techniques to increase GPS efficiency

Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio; Álvarez García, Juan Antonio; González Abril, Luis (Elsevier, 2012)
The recent boom of GPS (Global Positioning System) as a universal method of location has meant that most people in developed ...
Article
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Evaluating decision-making performance in a grid-computing environment using DEA

Fernández Montes González, Alejandro; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio (Elsevier, 2012)
Energy saving involves two direct benefits: sustainability and cost reduction, both of which Information Technologies must ...
Presentation
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Application of Things: A Step beyond Web of Things

Ortega Ramírez, Juan Antonio; Soria Morillo, Luis Miguel; Kröner, Alexander; Álvarez García, Juan Antonio (Springer, 2012)
Internet of Things has achieved a great expectation in the last few years, largely due to possibilities in the field of ...
Presentation
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An extended chronicle discovery approach to find temporal patterns between sequences

Álvarez, M. A.; Subias, A.; Travé-Massuyés, L.; González Abril, Luis; Ortega Ramírez, Juan Antonio (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
Sequences of events describing the behavior and actions of users or systems can be collected in sev eral domains. An episode ...
Article
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Smart scheduling for saving energy in grid computing

Fernández Montes González, Alejandro; González Abril, Luis; Ortega Ramírez, Juan Antonio; Lefévre, Laurent (Elsevier, 2012)
Energy saving involves two direct benefits: sustainability and cost reduction. Within the field of Informa tion Technology, ...
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Prosthetic Memory: Object Memories and Security for Children

Álvarez García, Juan Antonio; Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio; Cuadrado Cordero, Ismael (ACM, 2012)
Children younger than 3 years old are very special humans, their psychomotor and social development is very fast and parents ...
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Wireless location: A survey about GSM in location techniques

Cuadrado Cordero, Ismael; Soria Morillo, Luis Miguel; Gallego Torrecilla, Pedro; Ortega Ramírez, Juan Antonio (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
Security has become one of the most important fea tures in modern computation, especially due to the point of view of the ...
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Interaction control in children using NFC tags

Soria Morillo, Luis Miguel; Álvarez García, Juan Antonio; Cuadrado Cordero, Ismael; Ortega Ramírez, Juan Antonio (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
Children younger than 3 years old are very special humans, their psychomotor and social development is very fast and ...
Presentation
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ARTEMISA: Architecture of an eco-driving assistant based on the anticipation

Corcoba Magaña, Víctor; Muñoz Organero, Mario; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (Colectivo ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2012)
This paper presents the architecture of an eco driving assistant. The assistant evaluates the fulfil ment of classic ...
PhD Thesis
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Cálculo de rutas en Sistemas de E-Learning utilizando un algoritmo de optimización por colonias de hormigas

Márquez Vázquez, José Manuel; González Abril, Luis; Ortega Ramírez, Juan Antonio (2012)
Esta tesis plantea un escenario en el que existen itinerarios de aprendizaje alternativos para adquirir las mismas ...
PhD Thesis
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Middleware para el desarrollo de aplicaciones ubicuas en dispositivos móviles

Soria Morillo, Luis Miguel; González Abril, Luis; Ortega Ramírez, Juan Antonio (2011)
En este documento se muestra una arquitectura software para la gestión y desarrollo de aplicaciones susceptibles de ser ...
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A Model for Qualitative Colour Description and Comparison

Falomir, Zoe; Museros, Lledó; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (2011)
A model for Qualitative Colour Description and Comparison (QCDC) is presented in this paper. Using Hue Saturation and ...
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Calibración de un algoritmo ACO para el cálculo de itinerarios alternativos en sis­temas de e-learning

Márquez, J.M.; González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2011)
Este artículo describe el proceso de calibración de un algoritmo ACO para el cálculo de itinerarios alternativos en sistemas ...
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Application of Things: a step beyond the Web of Things

Soria Morillo, Luis Miguel; Kröner, Alexander; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2011)
Intemet of Things has achieved a great expectation in the last few years, largely due to possibilities in the field of the ...
Presentation
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A Video Similarity Measure Combining Alignment, Graphical and Speech Features

Fuentes Brenes, Daniel; Bardeli, R.; Ortega Ramírez, Juan Antonio; González Abril, Luis (Universidad de Sevilla, 2011)
A large volume of video content on the web is available today, which demands efficient manage­ment. To effectively manage, ...
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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)
Our work provides developers of context-based application for mobile devices a framework for developing comprehensive and ...
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Designing a software framework for smart environments

Sánchez Venzalá, José I.; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Cuberos, Francisco Javier (Universidad de Sevilla, 2011)
The purpose of this paper is to describe the cksign of a software framework to build smart environ­ment, based in the ...
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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)
In this paper, a methodology which quantifies the dependence beteen features in a data set is developed. This methodology ...
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Sharing locations through semantic labels

Bellido, Antonio M.; Álvarez García Juan Antonio; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2011)
Givcn the lack of privacy offered by web applica­tions that integrate geo-positioning systems and the huge gromh of intemet ...
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Looking for best energy policies to save energy in grid computing

Fernández Montes González, Alejandro; González Abril, Luis; Ortega Ramírez, Juan Antonio; Sánchez Venzalá, José I. (Universidad de Sevilla, 2011)
Energy saving involves two direct benefits: sus­tainability and cost reduction and lnforrnation Technologies must be aware ...
Article
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Support vector machines for classification of input vectors with different metrics

González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; Franco Martín, Luis (ScienceDirect, 2011)
In this paper, a generalization of support vector machines is explored where it is considered that input vectors have ...
Article
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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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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 Ameva ...
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Mobile Architecture for Communication and Development of Applications Based on Context

Soria Morillo, Luis Miguel; Ortega Ramírez, Juan Antonio; González Abril, Luis; Álvarez García, Juan Antonio (Springer, 2011)
The arrival of ubiquitous computing and the increasing use of mobile devices can geta lot of information about the user. ...
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LECOMP: Low Energy COnsumption Mesh Protocol in WSN

Ortega Ramírez, Juan Antonio; Fernández Montes González, Alejandro; Fuentes, Daniel; González Abril, Luis (Springer, 2011)
LECOMP is a mesh network protocol that is focused on minimizing bat tery consumption of nodes in a Wireless Sensor Network ...
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Event-Based Method for Detecting Trojan Horses in Mobile Devices

Fuentes, Daniel; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco (Springer Link, 2010)
Mobile phones and wireless technology and its constant evolution have, in the last years, revolutionized the way in which ...
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A probabilistic tri-class support vector machine

Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Angulo, Cecilio (2010)
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A study of thematic areas in economy by a measure of similarities based on a kernel

Velasco Morente, Francisco; González Abril, Luis; Ortega Ramírez, Juan Antonio; Álvarez García, Juan Antonio (Asociación Interciencia, 2010)
Some results on the similarities among thirteen subjects in the Economy area between 1990 and 2003 are presented and a ...
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Tracking system based on accelerometry for users with restricted physical activity

Soria Morillo, Luis Miguel; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis (Springer, 2010)
This article aims to develop a minimally intrusive system of care and monitoring. Furthermore, the goal is to get a cheap, ...
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A Study of Thematic Areas in Economy by a Measure of Similarities based on a Kernel

Velasco Morente, Francisco; González Abril, Luis; Ortega Ramírez, Juan Antonio; Álvarez, Juan Antonio (Asociación Interciencia, 2010)
Some results on the similarities among thirteen subjects in the Economy area between 1990 and 2003 are presented and a ...
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Trojan horses in mobile devices

Álvarez García, Juan Antonio; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; González Abril, Luis; Fuentes Brenes, Daniel (2010)
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Trip destination prediction based on past GPS log using a Hidden Markov Model

Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco (Elsevier, 2010)
In this paper, a system based on the generation of a Hidden Markov Model from the past GPS log and cur- rent location is ...
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A Study on Saving Energy in Artificial Lighting by Making Smart Use of Wireless Sensor Networks and Actuators

Fernández Montes González, Alejandro; González Abril, Luis; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (IEEE, 2009)
This article is focused on adapting lighting conditions to user lighting preferences. A theoretical analysis of lighting ...
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A new approach to qualitative learning in time series

González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; Cuberos, Francisco Javier (ScienceDirect, 2009)
In this paper the k-nearest-neighbours (KNN) based method is presented for the classification of time series which use ...
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Online motions recognition method using mobile phone accelerometer

Fuentes Brenes, Daniel; González Abril, Luis; Parera Giro, Jordi; Angulo, Cecilio; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2009)
Accelerometers can obtain data about the move­ments of sorne person. Ihe continued study of this information can help to ...
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Un Framework para la Evaluación de la Calidad de Metodologías MDWE

Domínguez Mayo, Francisco José; Escalona Cuaresma, María José; Mejías Risoto, Manuel; Torres, Arturo H.; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2009)
Actualmente existen diversas metodologías de de­sarrollo en el ámbito de la ingeniería web guiada por modelos (MDWE). Cada ...
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Social Networks Applications: Detecting School Bullying

Bellido, Antonio M.; Álvarez, Miguel Ángel; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis; Torres Valderrama, Jesús (Universidad de Sevilla, 2009)
In this paper, we will study how we can extract in­formation of a school social network to detect possible school bullying ...
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Métodos de aprendizaje por refuerzo aplicado a un escenario de e-learning

Márquez, J.M.; Velasco Morente, Francisco; González Abril, Luis; Ortega Ramírez, Juan Antonio; Chamizo Guerra, Cristóbal (Universidad de Sevilla, 2009)
En este artículo se presentan dos métodos de aprendizaje por refuerzo, y su posible aplicación un escenario e-learning. ...
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Propuesta de pruebas Web basadas sobre MDWE

Torres, Arturo H.; Escalona Cuaresma, María José; Mejías Risoto, Manuel; Domínguez Mayo, Francisco José; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2009)
Las aplicaciones Web emplean una serie de nuevos lenguajes, tecnologías, y modelos de programa­ción, que se utilizan para ...
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Controlled monitoring in intelligent environments

Álvarez, Miguel Ángel; Bellido, A. M.; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (Universidad de Sevilla, 2009)
This article describes a new line of development fo­cused on monitoring the activities of people living alone at home. To ...
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An approach for saving energy in smart environments

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; González Abril, Luis; Vilchez Lobato, María Luisa; Soria Morillo, Luis Miguel (Universidad de Sevilla, 2009)
This article is focused on adapting lighting con­ditions to user lighting preferences. A theoretical analysis of lighting ...
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Ameva: An autonomous discretization algorithm

González Abril, Luis; Cuberos, Francisco Javier; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio (ScienceDirect, 2009)
This paper describes a new discretization algorithm, called Ameva, which is designed to work with supervised learning ...
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Interfaz web para gestionar los recursos de supercomputación

Cantón, Jorge; Silva, Ana; Ortega Ramírez, Juan Antonio (Red.es / RedIRIS, 2009)
La arquitectura presentada en el siguiente artículo, llamada Cluster Looking Glass (CLG), desarrollada por el Centro ...
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Bifurcaciones de codimensión 2 en un modelo dinámico del mercado potencial y actual. Aplicación al mercado cervecero español

Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; Nadal Morales, Purificación; González Abril, Luis (2009)
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Service-Oriented Device Integration for Ubiquitous Ambient Assisted Living Environments

Pérez, Javier Andréu; Álvarez García, Juan Antonio; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio (Springer, 2009)
As a result of the increment of population in countries of Europe, a lot of efforts from European Authorities are coming ...
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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; Martínez Madrid, Natividad; Seepold, Ralf (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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A study on saving energy in artificial lighting by making smart use of wireless sensor networks and actuators

Fernández Montes González, Alejandro; González Abril, Luis; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (IEEE Computer Society, 2009)
This article is focused on adapting lighting conditions to user lighting preferences. A theoretical analysis of lighting ...
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Smart Environment Software Reference Architecture

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Álvarez García, Juan Antonio; González Abril, Luis (IEEE Computer Society, 2009)
Nowadays ubiquitous computing is spreading to all scopes of our lives. Smart environments are present at every location ...
PhD Thesis
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Técnicas de predicción de destinos geográficos futuros en desplazamientos de personas

Álvarez García, Juan Antonio; González Abril, Luis; Ortega Ramírez, Juan Antonio (2009)
El desarrollo de este trabajo de investigación se orientará hacia un sector cada vez más amplio de usuarios que dispongan ...
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Distributing OSGi Services: The OSIRIS Domain Connector

Márquez, José Manuel; Álamo, Javier; Ortega Ramírez, Juan Antonio (IEEE, 2008)
This paper presents a way of providing remote capabilities to OSGi services in order to build a distributed environment ...
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Estudio de troyanos en dispositivos móviles

Fuentes, D.; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2008)
A finales de 2007 había en el mundo 3.300 millo­nes de móviles según un estudio de la Unión Inter­nacional de Telecomunicaciones ...
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Creating adaptive learning paths using Ant Colony Optimization and Bayesian Networks

Márquez, Josh Manuel; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco (IEE Xplore, 2008)
This paper presents a new way to combine two different approaches of artificial intelligence looking for the best path in ...
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Modelado de características para itinerarios formativos adaptativos

Márquez, J.M.; Cetina, Carlos; Velasco Morente, Francisco; González Abril, Luis; Ortega Ramírez, Juan Antonio; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2008)
Este trabajo presenta una forma de combinar dos técnicas diferentes de la inteligencia artificial para aplicarlas en la ...
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Predicción de destinos geográficos mediante Modelos de Markov Ocultos

Álvarez García, Juan Antonio; González Abril, Luis; Ortega Ramírez, Juan Antonio; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2008)
En este artículo se propone una metodología ba­sada en los modelos de Markov Ocultos para rea­lizar predicciones del futuro ...
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Experimental environment to learn user preferences

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; González Abril, Luis; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2008)
Tne automation of smart environment systems is one of the main goals of smart home researching. Tui paper focus on learning ...
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A location of robots proposal in collaborative environments

Álvarez, M. A.; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2008)
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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Support vector machines for interval discriminant analysis

Angulo, Cecilio; Anguita, Davide; González Abril, Luis; Ortega Ramírez, Juan Antonio (ScienceDirect, 2008)
The use of data represented by intervals can be caused by imprecision in the input information, incompleteness in patterns, ...
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Smart Environment Vectorization : An Approach to Learning of User Lighting Preferences

Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; González Abril, Luis; Álvarez García, Juan Antonio; Cruz, Manuel David (Springer, 2008)
The automation of smart environment systems is one of the main goals of smart home researching. This paper focus on learning ...
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Defining Adaptive Learning Paths For Competence-Oriented Learning

Márquez, José Manuel; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Nunes, Miguel Baptista; McPherson, Maggie (IADIS Press, 2008)
This paper presents a way to describe educational itineraries in a competence-oriented learning system in order to solve the ...
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Delivery improvement for transport companies

Álvarez García, Juan Antonio; Fernández Montes González, Alejandro; Moreno, Jorge; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco (IEEE Computer Society, 2008)
In this paper we propose a solution that improves the synchronization and effectiveness of sending and receiving of goods ...
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Design of a Functional Architecture for the Management of Cluster Resources and Services through the Web

Ortega Ramírez, Juan Antonio; Cantón, Jorge; Silva, Ana; Bosque, David; Velasco Morente, Francisco (ERCIM, 2008)
In 2006 Junta de Andalucía created the Andalusian Supercomputing Network (RASCI). RASCI consists of supercomputing nodes ...
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Development Environment Using FPGA for Domotics Applications Based on X10 Technology

Cruz, Manuel D.; Ortega Ramírez, Juan Antonio; Barriga Barros, Ángel; Fernández Montes González, Alejandro; Sobh, Tarek; Elleithy, Khaled; Mahmood, Ausif; Karim, Mohammad A. (Springer, 2008)
This communication proposes a basic software and hardware architecture of a controller for the X10 technology interface ...
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Entorno de desarrollo sobre FPGA para aplicaciones domóticas basadas en tecnología x10

Cruz Díaz, Manuel D.; Ortega Ramírez, Juan Antonio; Barriga Barros, Ángel; Fernández Montes González, Alejandro (Universidad Politécnica de Madrid, 2008)
Esta comunicación propone una arquitectura y un software básicos para la elaboración de un entorno de desarrollo que nos ...
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Combining Smart Tags and Body Fixed Sensors for Disabled People Assistance

Álvarez García, Juan Antonio; Pérez, Carlos; Angulo, Cecilio; Ortega Ramírez, Juan Antonio (SpringerLink, 2007)
The world population is rapidly aging in industrialized countries and at a growing rate. As well as the percentage of ...
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An aprroximation to the features of smart home prediction algorithms

Fernández Montes González, Alejandro; Cruz, M. R.; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús; Velasco Morente, Francisco; González Abril, Luis (Universidad de Girona: Servei de Publicacions, 2007)
This paper reviews the goals of the Domoweb pro­ject and the solutions adopted to achieve them. As a result we enjoy a ...
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Medidas de similitud entre caminos: Una propuesta

Álvarez García, Juan Antonio; González Abril, Luis; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco (Universidad de Girona: Servei de Publicacions, 2007)
En este trabajo se presentan y describen dife­rentes medidas de similitud específicamente di­señadas para caminos realizados ...
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Un modelo dinámico económico continuo. Estabilidad y bifurcaciones de codimensión 1 y 2

Velasco Morente, Francisco; González Abril, Luis; Ortega Ramírez, Juan Antonio; Álvarez García, Juan Antonio (Universidad de Girona: Servei de Publicacions, 2007)
En este trabajo establecemos las condiciones para la estabilidad y existencia de bifurcaciones de codi­mensión 1 y 2 en ...
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An Orientation Service for Dependent People Based on an Open Service Architecture

Fernández Montes González, Alejandro; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Martínez Madrid, Natividad; Seepold, Ralf (Springer, 2007)
This article describes a service architecture for ambient assisted liv ing and in particular an orientation navigation ...
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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)
PhD Thesis
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Diagnosis de sistemas dinámicos mediante el aprendizaje de modelos proposicionales

Abad Herrera, Pedro J.; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio (2007)
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Interoperability for transport companies

Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Cuberos, Francisco Javier (Springer, 2007)
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Modeling Smart Homes for Prediction Algorithms

Fernández Montes González, Alejandro; Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Cruz, Manuel David; González Abril, Luis; Velasco Morente, Francisco (Springer, 2007)
This paper reviews the goals of the Domoweb project and the solutions adopted to achieve them. As a result we enjoy a great ...
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Multi-Classification by Using Tri-Class SVM

Angulo, Cecilio; Ruiz, Francisco J.; González Abril, Luis; Ortega Ramírez, Juan Antonio (SpringerLink, 2006)
The standard form for dealing with multi-class classification problems when biclassifiers are used is to consider a two-phase ...
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¿Where do we go? OnTheWay: A prediction system for spatial locations

Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Cuberos García-Baquero, Francisco Javier (Universidad de Alcalá, 2006)
In ubiquitous computing we need to know the present context in order to interact properly with the nearby smart elements. ...
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OnTheWay : a prediction system for spatial locations

Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; González Abril, Luis; Velasco Morente, Francisco; Cuberos, Francisco Javier (SciTePress, 2006)
In ubiquitous computing we need to know the present context in order to interact properly with the nearby smart elements. ...
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Extended sensations on interactive telecommunication

Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Fernández Montes González, Alejandro; Cruz, Manuel David; Castilla, Pablo (CEUR Workshop Proceedings (CEUR-WS.org), 2006)
Although computer science and telecommunications have evolved from the 90’s to nowadays, the way people communicate each ...
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Discretization of Continuous Features by Using a Kernel

González Abril, Luis; Velasco Morente, Francisco; Cuberos, Francisco Javier; Ortega Ramírez, Juan Antonio; Angulo, C. (SpringerLink, 2006)
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Diagnosis of a Chopper Controlled DC Motor by Boosting

Abad, Pedro J.; Suárez, Antonio J.; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio (IEEE, 2005)
This paper proposes a methodology to diagnose a transient state of a dynamic system using boosting. The methodology is ...
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Multiple decision trees to diagnose a transient state of dynamic systems. Application to a DC motor.

Suárez Fábrega, Antonio J.; Abad Herrera, Pedro J.; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Ortega Ramírez, Juan Antonio (Edición Digital @tres, 2005)
In this paper, a novel methodology is proposed to diagnose a transient state of a dynamic system us­ing supervised learning. ...
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Diagnosis con variables intervalares usando técnicas Max-CSP

Ceballos Guerrero, Rafael; Cejudo, V.; Valle Sevillano, Carmelo del; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio (Edición Digital @tres, 2005)
En ingeniería son muchas las aplicaciones que usan modelos basados en variables y parámetros cuyos dominios aparecen ...
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Bifurcaciones locales en el mercado actual y potencial: El mercado cervecero español

Velasco Morente, Francisco; Nadal, P.; González Abril, Luis; Ortega Ramírez, Juan Antonio; Vilchez Lobato, María Luisa; Cuberos, Francisco Javier; Ortega Ramírez, Juan Antonio (Edición Digital @tres, 2005)
En este trabajo establecemos las condiciones nece­sarias para la existencia de bifurcaciones de codi­mensión 1 y 2 de un ...
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A new Kernel to use with discretized Temporal Series

Cuberos, Francisco Javier; González Abril, Luis; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio; Angulo, C.; Ortega Ramírez, Juan Antonio (Edición Digital @tres, 2005)
In this papera new kernel, from statistical learning theory, is proposed to work with symbols chains (words) obtained from ...
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Estabilidad en un sistema dinámico del mercado actual y potencial de las organizaciones

Velasco Morente, Francisco; Nadal, P.; González Abril, Luis; Ortega Ramírez, Juan Antonio; Vilchez Lobato, María Luisa; Cuberos, Francisco Javier; Ortega Ramírez, Juan Antonio (Edición Digital @tres, 2005)
En este trabajo estudiamos la existencia de pun­tos fijos en un modelo dinámico económico, en tiempo discreto, que relaciona ...
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Aplicación del razonamiento cualitativo al "Hogar Digital"

Álvarez García, Juan Antonio; Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús; Fernández Montes González, Alejandro; Cruz Díaz, Manuel D.; Angulo, Cecilio; Velasco Morente, Francisco; Ortega Ramírez, Juan Antonio (Edición Digital @tres, 2005)
Identificar y reproducir el razonamiento humano, es uno de los objetivos principales de la Inteligen­cia Artificial. En ...
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Experiencias en entornos de Computación Ubicua mediante Arquitecturas Orientadas a Servicios

Álvarez García, Juan Antonio; Cruz, Manuel David; Fernández Montes González, Alejandro; Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús (CEDI, 2005)
El desarrollo del proyecto Domoweb, cuyo objetivo principal, es la creación de un entorno domótico gestionado vía Web, nos ...
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Metodología Semicualitativa para Razonar sobre Sistemas Dinámicos

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Torres Valderrama, Jesús; Toro Bonilla, Miguel; González Abril, Luis; Velasco Morente, Francisco; Angulo Bahón, Cecilio (Scientific Electronic Library Online (SCIELO), 2005)
En este artículo se propone una metodología para razonar sobre los modelos semicualitativos construidos para sistemas ...
PhD Thesis
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Índice para la comparación cualitativa de series temporales

Cuberos García-Baquero, Francisco Javier; Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael (2005)
Las series temporales son conjuntos de datos complejos de una gran importancia. Aparecen en aplicaciones científicas, ...
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Sobre núcleos, distancias y similitudes entre intervalos

González Abril, Luis; Velasco Morente, Francisco; Angulo, Cecilio; Ortega Ramírez, Juan Antonio; Ruiz Vegas, Francisco (Sociedad Iberoamericana de Inteligencia Artificial, 2004)
Existe un buen número de aplicaciones en las que la información a codificar viene expresada en forma de un intervalo de ...
Chapter of Book
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Un sistema de aula virtual que combina sistemas de hipermedia con aplicaciones de videoconferencia

Ortega Ramírez, Juan Antonio; Márquez, José Manuel; Torres Valderrama, Jesús; Escalona Cuaresma, María José (Instituto de Ciencias de la Educación. Vicerrectorado de Calidad y Nuevas Tecnologías. Universidad de Sevilla, 2004)
La idea original de este trabajo de investigación era el desarrollo de un sistema de aula virtual que combinase de manera ...
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QSI - Alternative Labelling and Noise Sensitivity

Cuberos, Francisco Javier; Ortega Ramírez, Juan Antonio; Velasco Morente, Francisco; González Abril, Luis (University of Brasilia, 2003)
The are different approaches to the temporal study of time evolving systems. In the paper, this study is carried out by ...
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Revisiting requirements in web modelling languages

Reina Quintero, Antonia María; Torres Valderrama, Jesús; Escalona Cuaresma, María José; Ortega Ramírez, Juan Antonio (IADIS – International Association for Development of the Information Society, 2003)
As a consequence of the great number of web modelling languages arisen in the last few years, some criteria to compare them ...
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Recognition of system behaviours based on temporal series similarity

Colomer, J.; Ortega Ramírez, Juan Antonio; Llanos, D.; Cuberos, Francisco Javier; Meléndez, J.; Gamero, F. I. (2003)
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Interactions among dynamic sets of objects

Torres Valderrama, Jesús; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (Springer, 2003)
In this paper, we present an operator to model interactions among objects. Our proposal allows a variable number of ...
Chapter of Book
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Aplicación de sistemas hipermedia al desarrollo de clases virtuales y semipresenciales

Ortega Ramírez, Juan Antonio; Márquez, J.M.; Torres Valderrama, Jesús (Instituto de Ciencias de la Educación. Vicerrectorado de Calidad y Nuevas Tecnologías. Universidad de Sevilla, 2003)
En estos tiempos de rápidos cambios tecnológicos, los desarrollos que se despliegan cada día en comunicaciones e informática ...
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Bifurcaciones de Hopf: análisis cualitativo y aplicación a un modelo bioeconómico de pesquerías

Ortega Ramírez, Juan Antonio; Vílchez Lobato, María Luisa; Velasco Morente, Francisco; González Abril, Luis (2003)
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Utilización de NDT y de las Técnicas de Satisfacción de Restricciones para la Generación de Itinerarios Culturales

Escalona Cuaresma, María José; Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús; Mejías Risoto, Manuel; Álvarez García, Juan Antonio (Centro de Investigación en Computación IPN, 2003)
El interés por el conocimiento de patrimonio cultural ha crecido en los últimos años. El avance de las comunicaciones y ...
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Patrones de diseño en un Sistema Multimedia para la Educación

Ortega Ramírez, Juan Antonio; Márquez, J.M.; Torres Valderrama, Jesús; Escalona Cuaresma, María José (GIS: Grupo de Ingeniería del Software, Universidad de Murcia, 2002)
Diseñar e implementar sistemas multimedias para la educación no es una tarea sencilla. No sólo por el trabajo que conlleva ...
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Generación automática de itinerarios culturales aplicando EJB y programación con restricciones

Ortega Ramírez, Juan Antonio; Ruz, F.; Escalona Cuaresma, María José; Mejías Risoto, Manuel; Márquez, J.M. (GIS: Grupo de Ingeniería del Software, Universidad de Murcia, 2002)
La aparición cada vez más frecuente de diferentes dispositivos fijos y sobre todo móviles hace que las arquitecturas de ...
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A framework to translate UML class generalization into Java Code

Sánchez, Pedro; Letelier, Patricio; Pastor, Juan Ángel; Ortega Ramírez, Juan Antonio (SpringerLink, 2002)
The concept of generalization used during analysis when building a class diagram has a close relationship with the notion ...
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Un modelo de optimización CSP para la sustitución de piezas defectuosas diagnosticadas

Valle Sevillano, Carmelo del; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Aguilar, J. (Edición Digital @tres, 2002)
Este trabajo presenta un modelo CSP (Problema de Satisfacción de Restricciones) para el secuenciamiento óptimo de tareas ...
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Diagnosis progresiva en el tiempo de sistemas dinámicos

Suárez Fábrega, Antonio J.; Abad Herrera, Pedro J.; Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael (Edición Digital @tres, 2002)
En este trabajo se presenta un nuevo avance en la metodología objeto de estudio por los mismos autores presentada en ...
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Representación Cualitativa del Conocimiento: Aplicación a la Generación Automática de Itinerarios Culturales

Ortega Ramírez, Juan Antonio; Escalona Cuaresma, María José; Torres Valderrama, Jesús; Martínez Gasca, Rafael; Mejías Risoto, Manuel; Márquez, J.M. (Digital @tres, 2002)
La expresividad que el conocimiento cualitativo puede ofrecerá la hora de expresar una consulta, es aprovechada en este ...
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Using Supervised Learning Techniques for Diagnosis of Dynamic Systems

Abad, Pedro J.; Suárez, Antonio J.; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio (2002)
This paper describes an approach based on supervised learning techniques for the diagnosis of dynamic systems. The methodology ...
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Diagnosis de sistemas dinámicos basada en aprendizaje supervisado off-line

Suárez Fábrega, Antonio J.; Abad Herrera, Pedro J.; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio (2002)
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Qualitative Comparison of Temporal Series. QSI

Ortega Ramírez, Juan Antonio; Cuberos, Francisco Javier; Martínez Gasca, Rafael; Toro Bonilla, Miguel; Torres Valderrama, Jesús (Springer, 2002)
In this paper, the study of systems that evolve in time by means of the comparison of time series is proposed. An improvement ...
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La navegación y la separación de conceptos

Reina Quintero, Antonia María; Torres Valderrama, Jesús; Escalona Cuaresma, María José; Ortega Ramírez, Juan Antonio (2002)
La popularidad de la multimedia y la aparición de Internet ha ocasionado que cada vez haya más aplicaciones que se ejecutan ...
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Sistemas cualitativos y diagnosis: ARCA

Ortega Ramírez, Juan Antonio; Pulido, Belarmino; Parra, Xavier (AEPIA: Asociación Española para la Inteligencia Artificial, 2002)
Este artículo se ha escrito con una doble intención: presentar el estado actual de las investigaciones de diversos grupos ...
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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 ...
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Estrategia para la realización de proyectos de desarrollo de software en sistemas de información global

Mejías Risoto, Manuel; Escalona Cuaresma, María José; Ramos Román, Isabel; Torres Valderrama, Jesús; Ortega Ramírez, Juan Antonio (AEIPRO, 2002)
La realización de proyectos de ingeniería informática constituye actualmente un sector en auge dentro del ámbito industrial, ...
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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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Diagnosis en fases tempranas de sistemas dinámicos

Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Suárez Fábrega, Antonio J.; Abad Herrera, Pedro J. (2002)
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Un modelo CSP para la planificación de la sustitución óptima de piezas defectuosas

Valle Sevillano, Carmelo del; Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Gómez López, María Teresa (AEPIA: Asociación Española para la Inteligencia Artificial, 2002)
La aplicación de métodos de diagnosis basada en modelos permite obtener los posibles componentes involucrados en el ...
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Semáforos inteligentes, una primera aproximación

Gallego Torrecilla, Pedro; López García, D.; Torres Valderrama, Jesús; Ortega Ramírez, Juan Antonio (Universidad de Sevilla, 2001)
La congestión del tráfico es un grave problema existente para la mayoría de cuidades del mundo. Estos atascos generan una ...
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An object-oriented approach for learning of algorithm design with sequential devices and schemas

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel (2001)
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Structural Constraint-Based Modeling and Reasoning with Basic Configuration Cells

Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (Springer, 2001)
Configuration tasks are an important application area in engineering design. The proposed solving techniques use either a ...
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Comparación cualitativa de series temporales. Indice cualitativo de similitud - QSI

Ortega Ramírez, Juan Antonio; Cuberos, Francisco Javier; Martínez Gasca, Rafael; Toro Bonilla, Miguel (Centro de Investigación en Computación IPN, 2001)
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Interacción profesor-alumno: utilización de las nuevas tecnologías

Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús (2001)
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Aplicación de las nuevas tecnologías: docencia interactiva

Ortega Ramírez, Juan Antonio; Torres Valderrama, Jesús (2001)
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Diagnosis basada en modelos polinómicos usando técnicas simbólicas

Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (Asociación Española para la Inteligencia Artificial, 2001)
La detección y diagnosis del funcionamiento anómalo de mecanismos son importantes debido a las actuales demandas económicas ...
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Searching for similar semiqualitative temporal patterns in time-series databases

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel (Universidad Michoacana de San Nicolás de Hidalgo, 2000)
A way to obtain behaviour patterns of semiqualitative models of dynamic systems automatically is proposed in this paper. ...
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Estudio de sistemas semicualitativos con restricciones. Aplicación a un modelo logístico con retraso.

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel; Torres Valderrama, Jesús; González Romano, José Mariano (ARCA: Automatización del Razonamiento Cualitativo y Aplicaciones, 2000)
En este trabajo se propone una nueva tecnología para automatizar el análisis y el estudio de modelos con restricciones que ...
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Metodologías Cualitativas Aplicadas a los Sistemas Socioeconómicos y Razonamiento con Intervalos. Presentación de la Monografía.

Toro Bonilla, Miguel; Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael (Asociación Española para la Inteligencia Artificial, 2000)
Esta monografía, y en particular este artículo, nace con la intención, por un lado, de presentar el estado actual de las ...
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Diseño del Modelo Navegacional para Sistemas de Tratamiento de Bibliotecas Digitales

Torres Valderrama, Jesús; Mejías Risoto, Manuel; Escalona Cuaresma, María José; Ortega Ramírez, Juan Antonio; Cordero Valle, Juan Manuel (2000)
Los sistemas de tratamiento de bibliotecas digitales nacen como sistemas complejos en los que se mezclan importantes ...
PhD Thesis
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Patrones de comportamiento temporal en modelos semicualitativos con restricciones

Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (2000)
En esta tesis se propone una nueva metodología para automatizar el análisis y el estudio de modelos con restricciones que ...
Chapter of Book
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Semiqualitative Temporal Patterns in Time-Series Databases

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel; Galán Morillo, Francisco José; Cañete Valdeón, José Miguel (Edición Digital @tres, 2000)
A way to obtain behaviour patterns of semiqualitative models of dynamic systems automatically is proposed in this paper. ...
Chapter of Book
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Using constraint programming framework for Semiqualitative Reasoning

Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel; Torres Valderrama, Jesús; Cordero Valle, Juan Manuel (Edición Digital @tres, 2000)
A semiqualitative model is the representation of the world by means of qualitative and quantitative knowledge. It is ...
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Aplicación del Razonamiento Semicualitativo al modelado y análisis de sistemas económicos

Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (Asociación Española para la Inteligencia Artificial, 2000)
Generalmente, el uso de modelos para el estudio y análisis de sistemas económicos y de otras disciplinas, tienen en cuenta ...
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Metodologías Cualitativas Aplicadas a los Sistemas Socioeconómicos y Razonamiento con Intervalos

Toro Bonilla, Miguel; Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael (Iberamia, 2000)
Esta monografía, y en particular este artículo, nace con la intención, por un lado, de presentar el estado actual de las ...
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Obtención de patrones de comportamiento de modelos semicualitativos

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel (Asociación Española para la Inteligencia Artificial, 2000)
En este artículo se propone una nueva metodología pensada para obtener los patrones de comportamiento de los modelos ...
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Automatic Semiqualitative Analysis: Application to a Biometallurgical System

Martínez Gasca, Rafael; Ortega Ramírez, Juan Antonio; Toro Bonilla, Miguel (Springer, 1998)
The aim of this work is the representation and analysis of semiqualitative models. Their qualitative knowledge is represented ...
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Including Qualitative Knowledge in Semiqualitative Dynamical Systems

Ortega Ramírez, Juan Antonio; Martínez Gasca, Rafael; Toro Bonilla, Miguel (Springer, 1998)
A new method to incorporate qualitative knowledge in semiqualitative systems is presented. In these systems qualitative ...