Alberto Fernandez - Academia.edu (original) (raw)

Papers by Alberto Fernandez

Research paper thumbnail of A case study on medical diagnosis of cardiovascular diseases using a Genetic Algorithm for Tuning Fuzzy Rule-Based Classification Systems with Interval-Valued Fuzzy Sets

2011 IEEE Symposium on Advances in Type-2 Fuzzy Logic Systems (T2FUZZ), 2011

Research paper thumbnail of MEG analysis of neural dynamics in attention-deficit/hyperactivity disorder with fuzzy entropy

Medical Engineering & Physics

Theaimofthisstudywastoanalyzetheneuraldynamicsinattention-deficit/hyperactivitydisorder(ADHD).For... more Theaimofthisstudywastoanalyzetheneuraldynamicsinattention-deficit/hyperactivitydisorder(ADHD).Forthispurpose,magnetoencephalographic(MEG)backgroundactivitywasanalyzedusingfuzzyentropy(FuzzyEn),anentropymeasurethatquantifiessignalirregularity,in13ADHDpatientsand14controlchildren.Additionally,relativepower(RP)wascomputedinconventionalfrequencybands(delta,theta,alpha,betaandgamma).FuzzyEnresultsshowedthatMEGactivitywasmoreregularinADHDpatientsthanincontrols.Moreover,wefoundanincreaseofpowerindeltabandandadecreaseintheremainingfrequencybands.Sta-tisticallysignificantdifferences(p-values<0.05;nonparametricpermutationtestformultiplecomparisons)weredetectedforFuzzyEnintheposteriorandlefttemporalregions,andforRPintheposterior,anteriorandlefttemporalregions.OurresultssupportthehypothesisthatADHDinvolveswidespreadfunctionalbrainabnormalities,affectingmoreareasthanfronto-striatalcircuits,suchasthelefttemporalandposteriorregions.

Research paper thumbnail of Análisis de registros MEG mediante la dimensión fractal de Higuchi para caracterización de la actividad cerebral en el trastorno por déficit de atención e hiperactividad

El objetivo de este trabajo es caracterizar la actividad cerebral en el trastorno por déficit de ... more El objetivo de este trabajo es caracterizar la actividad cerebral en el trastorno por déficit de atención e hiperactividad (TDAH) mediante el análisis de registros magnetoencefalográficos (MEG). Para ello, se aplicó el algoritmo de la dimensión fractal de Higuchi (DFH) a épocas estacionarias de 5 s. Los valores de DFH se analizaron por regiones cerebrales y considerando todos los canales. En las regiones central, posterior y lateral izquierda así como el total de los canales, los pacientes de TDAH obtuvieron valores de DFH significativamente menores que los sujetos de control (Test de la U de Mann-Whitney). Para evaluar la capacidad de discriminación entre ambos grupos de la DFH, se empelaron curvas características operativas del receptor (curva ROC). Este método permitió alcanzar una precisión (88.89%) y un área bajo la curva ROC (AROC) (88.46%) en la región posterior. Estos resultados sugieren que la actividad cerebral en el TDAH se caracteriza por una pérdida de complejidad, pudi...

Research paper thumbnail of Procalcitonin in the diagnosis of postoperative infection in knee arthroplasty

Revista Española de Cirugía Ortopédica y Traumatología (English Edition), 2011

ABSTRACT Purpose of the studyProcalcitonin (PCT) is a 116 aminoacid polipeptyde synthesized in th... more ABSTRACT Purpose of the studyProcalcitonin (PCT) is a 116 aminoacid polipeptyde synthesized in the thyroid C-cells. Its levels rise in the presence of bacterial infection. The aim of this work was to study the evolution of PCT levels in the postoperative period of knee arthroplasty and to assess its usefulness in the diagnosis of the infection process and its relationship to Erythrocyte Sedimentation Rate (ESR) and C-Reactive Protein (CRP).

Research paper thumbnail of MEG analysis of neural dynamics in attention-deficit/hyperactivity disorder with fuzzy entropy

Medical Engineering & Physics, 2015

Research paper thumbnail of Correlations of hippocampal atrophy and focal low-frequency magnetic activity in Alzheimer disease: volumetric MR imaging-magnetoencephalographic study

AJNR. American journal of neuroradiology, 2003

Patients with Alzheimer disease (AD) have more low-frequency activity on conventional EEG and inc... more Patients with Alzheimer disease (AD) have more low-frequency activity on conventional EEG and increased focal magnetoencephalographic (MEG) dipole density (DD) in delta and theta bands. This activity concurs with atrophy and reduced metabolic and perfusion rates, particularly in temporoparietal structures. The relationship between functional and structural measures and their conjoined capability to improve the diagnosis of AD were assessed in this study. Whole-head MEG recordings were obtained in 15 patients in whom the diagnosis of AD had been made and in 16 healthy control subjects during a resting condition. MR imaging volumetric data were also obtained; these included global cerebral, temporal lobe, and hippocampal volumes. DD in the delta and theta bands was enhanced in the AD group compared with the healthy control subjects. Slow-wave activity differed significantly between the groups in the temporoparietal regions of both hemispheres. Left hippocampal volume was correlated wi...

Research paper thumbnail of CheckDen, a program to compute quantum molecular properties on spatial grids

Journal of Molecular Graphics & Modelling, 2009

CheckDen, a program to compute quantum molecular properties on a variety of spatial grids is pres... more CheckDen, a program to compute quantum molecular properties on a variety of spatial grids is presented. The program reads as unique input wavefunction files written by standard quantum packages and calculates the electron density ρ(r), promolecule and density difference function, gradient of ρ(r), Laplacian of ρ(r), information entropy, electrostatic potential, kinetic energy densities G(r) and K(r), electron localization function (ELF),

Research paper thumbnail of Nonlinear forecasting measurement of magnetoencephalogram recordings from Alzheimer's disease patients

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008

Research paper thumbnail of Crustal deformation models and time-frequency analysis of GPS data from deception Island Volcano (South Shetland Islands, Antarctica)

We have applied wavelet techniques to analyze GPS time-series data from REGID geodetic network, d... more We have applied wavelet techniques to analyze GPS time-series data from REGID geodetic network, deployed at Deception Island Volcano (South Shetland Islands, Antarctica). In the present analysis wavelets are used to detect periodic components and to filter the data. The high frequency components can be associated to the orbital period of the satellites and to local tidal effects, whereas the

Research paper thumbnail of Synchrony analysis of spontaneous MEG activity in Alzheimer's disease patients

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, 2012

Research paper thumbnail of An organisation-based multiagent system for medical emergency assistance

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2009

Research paper thumbnail of An Overview of E-Learning in Cloud Computing

Advances in Intelligent Systems and Computing, 2012

ABSTRACT E-Learning is the topic related to the virtualized distance learning by means of electro... more ABSTRACT E-Learning is the topic related to the virtualized distance learning by means of electronic communication mechanisms, specifically the Internet. They are based in the use of approaches with diverse functionality (e-mail, Web pages, forums, learning platforms, and so on) as a support of the process of teaching-learning. The Cloud Computing environment rises as a natural platform to provide support to e-Learning systems and also for the implementation of data mining techniques that allow to explore the enormous data bases generated from the former process to extract the inherent knowledge, since it can be dynamically adapted by providing a scalable system for changing necessities along time. In this contribution, we give an overview of the current state of the structure of Cloud Computing for applications on e-learning. We provide details of the most common infrastructures that have been developed for such a system, and finally we present some examples of e-learning approaches for Cloud Computing that can be found in the specialized literature.

Research paper thumbnail of Engineering Agent Systems for Decision Support

Lecture Notes in Computer Science, 2003

Research paper thumbnail of Analysis of magnetoencephalography recordings from Alzheimer's disease patients using embedding entropies

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014

The aim of this study was to examine the magnetoencephalography (MEG) background activity in Alzh... more The aim of this study was to examine the magnetoencephalography (MEG) background activity in Alzheimer&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s disease (AD) using three embedding entropies: approximate entropy (ApEn), sample entropy (SampEn), and fuzzy entropy (FuzzyEn). These three methods measure the time series regularity. Five minutes of recording were acquired with a 148-channel whole-head magnetometer from 36 AD patients and 24 elderly control subjects. Our results showed that MEG activity was more regular in AD patients than in controls. Additionally, FuzzyEn revealed statistically significant differences between the two groups (p…

Research paper thumbnail of E-learning and educational data mining in cloud computing: an overview

International Journal of Learning Technology, 2014

Research paper thumbnail of Brain-wide slowing of spontaneous alpha rhythms in mild cognitive impairment

Frontiers in Aging Neuroscience, 2013

Research paper thumbnail of Service Discovery

CASCOM: Intelligent Service Coordination in the Semantic Web, 2008

Semantic service discovery is the process of locating Web Services based on the description of th... more Semantic service discovery is the process of locating Web Services based on the description of their functional and non-functional semantics. Both service oriented computing and the semantic Web envision intelligent agents to proactively pursue this task on behalf of their clients. Service discovery can be performed in different ways depending on the service description framework, on means of service selection,

Research paper thumbnail of Use of the Higuchi's fractal dimension for the analysis of MEG recordings from Alzheimer's disease patients

Medical Engineering & Physics, 2009

Research paper thumbnail of Motif-based communities in complex networks

Journal of Physics A: Mathematical and Theoretical, 2008

Research paper thumbnail of Analysis of spontaneous MEG activity in mild cognitive impairment and Alzheimer's disease using spectral entropies and statistical complexity measures

Journal of Neural Engineering, 2012

Research paper thumbnail of A case study on medical diagnosis of cardiovascular diseases using a Genetic Algorithm for Tuning Fuzzy Rule-Based Classification Systems with Interval-Valued Fuzzy Sets

2011 IEEE Symposium on Advances in Type-2 Fuzzy Logic Systems (T2FUZZ), 2011

Research paper thumbnail of MEG analysis of neural dynamics in attention-deficit/hyperactivity disorder with fuzzy entropy

Medical Engineering & Physics

Theaimofthisstudywastoanalyzetheneuraldynamicsinattention-deficit/hyperactivitydisorder(ADHD).For... more Theaimofthisstudywastoanalyzetheneuraldynamicsinattention-deficit/hyperactivitydisorder(ADHD).Forthispurpose,magnetoencephalographic(MEG)backgroundactivitywasanalyzedusingfuzzyentropy(FuzzyEn),anentropymeasurethatquantifiessignalirregularity,in13ADHDpatientsand14controlchildren.Additionally,relativepower(RP)wascomputedinconventionalfrequencybands(delta,theta,alpha,betaandgamma).FuzzyEnresultsshowedthatMEGactivitywasmoreregularinADHDpatientsthanincontrols.Moreover,wefoundanincreaseofpowerindeltabandandadecreaseintheremainingfrequencybands.Sta-tisticallysignificantdifferences(p-values<0.05;nonparametricpermutationtestformultiplecomparisons)weredetectedforFuzzyEnintheposteriorandlefttemporalregions,andforRPintheposterior,anteriorandlefttemporalregions.OurresultssupportthehypothesisthatADHDinvolveswidespreadfunctionalbrainabnormalities,affectingmoreareasthanfronto-striatalcircuits,suchasthelefttemporalandposteriorregions.

Research paper thumbnail of Análisis de registros MEG mediante la dimensión fractal de Higuchi para caracterización de la actividad cerebral en el trastorno por déficit de atención e hiperactividad

El objetivo de este trabajo es caracterizar la actividad cerebral en el trastorno por déficit de ... more El objetivo de este trabajo es caracterizar la actividad cerebral en el trastorno por déficit de atención e hiperactividad (TDAH) mediante el análisis de registros magnetoencefalográficos (MEG). Para ello, se aplicó el algoritmo de la dimensión fractal de Higuchi (DFH) a épocas estacionarias de 5 s. Los valores de DFH se analizaron por regiones cerebrales y considerando todos los canales. En las regiones central, posterior y lateral izquierda así como el total de los canales, los pacientes de TDAH obtuvieron valores de DFH significativamente menores que los sujetos de control (Test de la U de Mann-Whitney). Para evaluar la capacidad de discriminación entre ambos grupos de la DFH, se empelaron curvas características operativas del receptor (curva ROC). Este método permitió alcanzar una precisión (88.89%) y un área bajo la curva ROC (AROC) (88.46%) en la región posterior. Estos resultados sugieren que la actividad cerebral en el TDAH se caracteriza por una pérdida de complejidad, pudi...

Research paper thumbnail of Procalcitonin in the diagnosis of postoperative infection in knee arthroplasty

Revista Española de Cirugía Ortopédica y Traumatología (English Edition), 2011

ABSTRACT Purpose of the studyProcalcitonin (PCT) is a 116 aminoacid polipeptyde synthesized in th... more ABSTRACT Purpose of the studyProcalcitonin (PCT) is a 116 aminoacid polipeptyde synthesized in the thyroid C-cells. Its levels rise in the presence of bacterial infection. The aim of this work was to study the evolution of PCT levels in the postoperative period of knee arthroplasty and to assess its usefulness in the diagnosis of the infection process and its relationship to Erythrocyte Sedimentation Rate (ESR) and C-Reactive Protein (CRP).

Research paper thumbnail of MEG analysis of neural dynamics in attention-deficit/hyperactivity disorder with fuzzy entropy

Medical Engineering & Physics, 2015

Research paper thumbnail of Correlations of hippocampal atrophy and focal low-frequency magnetic activity in Alzheimer disease: volumetric MR imaging-magnetoencephalographic study

AJNR. American journal of neuroradiology, 2003

Patients with Alzheimer disease (AD) have more low-frequency activity on conventional EEG and inc... more Patients with Alzheimer disease (AD) have more low-frequency activity on conventional EEG and increased focal magnetoencephalographic (MEG) dipole density (DD) in delta and theta bands. This activity concurs with atrophy and reduced metabolic and perfusion rates, particularly in temporoparietal structures. The relationship between functional and structural measures and their conjoined capability to improve the diagnosis of AD were assessed in this study. Whole-head MEG recordings were obtained in 15 patients in whom the diagnosis of AD had been made and in 16 healthy control subjects during a resting condition. MR imaging volumetric data were also obtained; these included global cerebral, temporal lobe, and hippocampal volumes. DD in the delta and theta bands was enhanced in the AD group compared with the healthy control subjects. Slow-wave activity differed significantly between the groups in the temporoparietal regions of both hemispheres. Left hippocampal volume was correlated wi...

Research paper thumbnail of CheckDen, a program to compute quantum molecular properties on spatial grids

Journal of Molecular Graphics & Modelling, 2009

CheckDen, a program to compute quantum molecular properties on a variety of spatial grids is pres... more CheckDen, a program to compute quantum molecular properties on a variety of spatial grids is presented. The program reads as unique input wavefunction files written by standard quantum packages and calculates the electron density ρ(r), promolecule and density difference function, gradient of ρ(r), Laplacian of ρ(r), information entropy, electrostatic potential, kinetic energy densities G(r) and K(r), electron localization function (ELF),

Research paper thumbnail of Nonlinear forecasting measurement of magnetoencephalogram recordings from Alzheimer's disease patients

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008

Research paper thumbnail of Crustal deformation models and time-frequency analysis of GPS data from deception Island Volcano (South Shetland Islands, Antarctica)

We have applied wavelet techniques to analyze GPS time-series data from REGID geodetic network, d... more We have applied wavelet techniques to analyze GPS time-series data from REGID geodetic network, deployed at Deception Island Volcano (South Shetland Islands, Antarctica). In the present analysis wavelets are used to detect periodic components and to filter the data. The high frequency components can be associated to the orbital period of the satellites and to local tidal effects, whereas the

Research paper thumbnail of Synchrony analysis of spontaneous MEG activity in Alzheimer's disease patients

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS, 2012

Research paper thumbnail of An organisation-based multiagent system for medical emergency assistance

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2009

Research paper thumbnail of An Overview of E-Learning in Cloud Computing

Advances in Intelligent Systems and Computing, 2012

ABSTRACT E-Learning is the topic related to the virtualized distance learning by means of electro... more ABSTRACT E-Learning is the topic related to the virtualized distance learning by means of electronic communication mechanisms, specifically the Internet. They are based in the use of approaches with diverse functionality (e-mail, Web pages, forums, learning platforms, and so on) as a support of the process of teaching-learning. The Cloud Computing environment rises as a natural platform to provide support to e-Learning systems and also for the implementation of data mining techniques that allow to explore the enormous data bases generated from the former process to extract the inherent knowledge, since it can be dynamically adapted by providing a scalable system for changing necessities along time. In this contribution, we give an overview of the current state of the structure of Cloud Computing for applications on e-learning. We provide details of the most common infrastructures that have been developed for such a system, and finally we present some examples of e-learning approaches for Cloud Computing that can be found in the specialized literature.

Research paper thumbnail of Engineering Agent Systems for Decision Support

Lecture Notes in Computer Science, 2003

Research paper thumbnail of Analysis of magnetoencephalography recordings from Alzheimer's disease patients using embedding entropies

2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2014

The aim of this study was to examine the magnetoencephalography (MEG) background activity in Alzh... more The aim of this study was to examine the magnetoencephalography (MEG) background activity in Alzheimer&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s disease (AD) using three embedding entropies: approximate entropy (ApEn), sample entropy (SampEn), and fuzzy entropy (FuzzyEn). These three methods measure the time series regularity. Five minutes of recording were acquired with a 148-channel whole-head magnetometer from 36 AD patients and 24 elderly control subjects. Our results showed that MEG activity was more regular in AD patients than in controls. Additionally, FuzzyEn revealed statistically significant differences between the two groups (p…

Research paper thumbnail of E-learning and educational data mining in cloud computing: an overview

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CASCOM: Intelligent Service Coordination in the Semantic Web, 2008

Semantic service discovery is the process of locating Web Services based on the description of th... more Semantic service discovery is the process of locating Web Services based on the description of their functional and non-functional semantics. Both service oriented computing and the semantic Web envision intelligent agents to proactively pursue this task on behalf of their clients. Service discovery can be performed in different ways depending on the service description framework, on means of service selection,

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