Alberto López

ORCID: 0000-0003-3572-7632
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About
Contact & Profiles
Research Areas
  • Gaze Tracking and Assistive Technology
  • EEG and Brain-Computer Interfaces
  • Non-Invasive Vital Sign Monitoring
  • Spectroscopy and Chemometric Analyses
  • Hand Gesture Recognition Systems
  • Blind Source Separation Techniques
  • Analytical Chemistry and Sensors
  • Glaucoma and retinal disorders
  • Neuroscience and Neural Engineering
  • Tactile and Sensory Interactions
  • Advanced Chemical Sensor Technologies
  • Context-Aware Activity Recognition Systems
  • Edible Oils Quality and Analysis
  • Arctic and Antarctic ice dynamics
  • Animal Nutrition and Physiology
  • Electrochemical sensors and biosensors
  • Food Supply Chain Traceability
  • Journalism and Media Studies
  • Electromagnetic Compatibility and Noise Suppression
  • Fractal and DNA sequence analysis
  • Education Systems and Policy
  • Elevator Systems and Control
  • Electricity Theft Detection Techniques
  • Milk Quality and Mastitis in Dairy Cows
  • Capital Investment and Risk Analysis

Universidad de Oviedo
2014-2024

Tecnalia
2024

Universiti Tunku Abdul Rahman
2023

Hermanos Ameijeiras Hospital
2012

Florida State University
2012

Adulterations of olive oil are performed by adding seed oils to this high-quality product, which cheaper than oils. Food safety controls have been established the European Union avoid these episodes. Most methodologies require expensive equipment, time-consuming procedures, and expert personnel execute. Near-infrared spectroscopy (NIRS) technology has many applications in food processing industry. It analyzes quality parameters along chain. Using principal component analysis (PCA),...

10.3390/s23031728 article EN cc-by Sensors 2023-02-03

The development of a novel computer writing system based on eye movements is introduced herein. A these characteristics requires the consideration three subsystems: (1) hardware device for acquisition and transmission signals generated by movement to computer; (2) software application that allows, among other functions, data processing in order minimize noise classify signals; (3) graphical interface allows user write text easily screen using only. This work analyzes subsystems proposes...

10.3390/s17071505 article EN cc-by Sensors 2017-06-26

The eye acts as a dipole between the cornea (positive potential) and retina (negative which causes an electric field around eyeball. Therefore, when humans make saccadic movements, they generate signals relative to this potential called electrooculography (EOG) signals. These can be measured by placing electrodes near eye. Different electrode configurations employed acquire EOG properties of these change depending on number placement electrodes. paper presents comparative study used measure...

10.1109/memea.2016.7533703 article EN 2022 IEEE International Symposium on Medical Measurements and Applications (MeMeA) 2016-05-01

A significant share of many commercial banks’ portfolios consists residential mortgage loans provided to individuals and families. This paper examines the default rational prepayment risk single-borrower (residential) based on an option pricing model that captures skewness kurtosis house prices returns’ distribution via shifted lognormal distribution. Equilibrium option-adjusted credit spreads are obtained from implementation under plausible values relevant parameters. The methodology...

10.3390/ijfs13010031 article EN cc-by International Journal of Financial Studies 2025-03-01

Electrooculography is a technique for measuring the corneo-retinal standing potential of human eye. The resulting signal called electrooculogram (EOG). primary applications are in ophthalmological diagnosis and recording eye movements to develop simple human–machine interfaces (HCI). electronic circuits EOG conditioning well known field instrumentation; however, specific characteristics make careful design necessary. This work devoted presenting most important issues related an analog...

10.3390/electronics9060970 article EN Electronics 2020-06-11

Electrooculogram (EOG) is the measurement of biopotential generated by eye movement. These signals are crucial for people with severe motor disabilities because they rarely suffer alterations in Therefore, correct classification these could find application design simple user interfaces that allow independence and communication skills. This paper presents a comparison main techniques literature control EOG-based human–computer (HCIs). Static threshold, K-nearest neighbor (KNN), artificial...

10.1016/j.bspc.2022.104263 article EN cc-by-nc-nd Biomedical Signal Processing and Control 2022-10-13

Ataxias are a group of neurodegenerative disorders characterized by cerebellar dysfunction that cause irregularities in the rate, rhythm, amplitude, and force voluntary movements. The electrooculogram (EOG) may provide clues about ataxic because most these patients have difficulty with visual tracking fixing their gaze. Using electrodes, EOG records biopotentials generated eye In this paper, three surface electrodes placed around socket, movements acquired using commercial bioamplifier...

10.3390/s19173756 article EN cc-by Sensors 2019-08-30

This paper presents lightweight tooling concepts based on additive manufacturing, with the aim of developing advanced systems as well installing sensors for real-time monitoring and control during anchoring manufacturing aeronautical parts. Leveraging techniques in production yields benefits flexibility material usage. These transform traditional into active, intelligent tools, improving process part quality. Integrated measure variables such displacement, humidity temperature allowing data...

10.1038/s41598-024-68786-w article EN cc-by-nc-nd Scientific Reports 2024-07-31

Serious games based physical therapy is currently gaining a lot of interest by the physiotherapists and game developers that are using new natural user interfaces devices to assure an easy interaction between under rehabilitation his avatar immersed in virtual reality scenario. Arm motion training, as part stroke program, can be one main objectives serious games, was object several developed our group, previous works being followed postural stability monitoring during developments. Thus,...

10.1109/memea.2016.7533705 article EN 2022 IEEE International Symposium on Medical Measurements and Applications (MeMeA) 2016-05-01

This paper describes a new low-cost real-time communication assistive system for disabled people, especially those with only eye-motor coordination. The retinal resting potential causes an electric field around the eyeball, centred on optical axis, which can be measured by placing electrodes near to eye. An acquisition was implemented measuring this in order detect movement of eyes and provide relative gaze position, making it possible codify ocular actions as commands. A human-computer...

10.1109/ssd.2014.6808755 article EN 2014-02-01

The fact that the oculomotor system is one of last capabilities people suffering from neurodegenerative diseases or trauma retain allows us to develop a provide means communication for this particular target group. retinal resting potential causes an electric field around eyeball, centred on optical axis, which can be measured by placing electrodes near eye. An acquisition and LabVIEW application were implemented measuring these biopotentials in order detect movement eyes relative gaze...

10.1109/icsens.2014.6985240 article EN 2014-11-01

Electrooculography (EOG) is one of the occulography methods used for estimation eye orientation. These signals, generated by movements, can be in an efficient way as input different control systems. So, signal processing EOG a key point when performing complex tasks, instance, Human-Machine Interface (HMI). In this sense machine learning algorithms allow patterns data to identified, and then, predict future actions using those that have been learned. This paper presents module applying...

10.1109/memea.2016.7533704 article EN 2022 IEEE International Symposium on Medical Measurements and Applications (MeMeA) 2016-05-01

Breast milk is an optimal food that covers all the nutritional needs of newborn. It a dynamic fluid whose composition varies with lactation period. The neonatal units hospitals have human banks, service analyzes, stores, and distributes donated milk. This used to feed premature infants (born before 32 weeks gestation or weighing less than 1500 g) mothers, for some reason, cannot them their own Here, we aimed develop near-infrared spectroscopy (NIRS) measures analysis breast For this purpose,...

10.3390/s22041311 article EN cc-by Sensors 2022-02-09

10.1109/i2mtc60896.2024.10560680 article EN 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) 2024-05-20

The exposure to colored light with different wavelengths has proved affect the physiological functions of human body. To test such influence, this work was focused on heart rate variability (HRV) analysis associated healthy volunteers. A Photoplethysmography (PPG) wireless sensor network node employed acquire information about cardiac activity, as it proves be a more convenient and less intrusive method electrocardiography (ECG). small group volunteers were exposed 10 minutes blue red light,...

10.1109/i2mtc43012.2020.9129619 article EN 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) 2020-05-01

Schizophrenia is a mental illness that can negatively impact patient's abilities, emotional propensities, and the standard of their private social lives. Processing EEG data has evolved into useful tool for tracking identifying psychological brain states. In this framework, paper focus on developing an automated approach recognizing schizophrenia using non-invasive signals. The signals are segmented onward decomposed by Variational Mode Decomposition (VMD). Each mode termed variational...

10.1109/i2mtc53148.2023.10176074 article EN 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) 2023-05-22

Falls in the elderly are a major health and economic problem. Hence, reliable fall detection is of great importance. Many systems have been developed but this topic still under reach. In work, smart sensor based on tri-axial digital accelerometer microcontroller Wi-Fi module used to detect changes acceleration that occur when human being falling. A novel real-time algorithm distinguish between falls daily activities proposed. The prototype can easily connect internet things thus expanding...

10.1109/memea.2018.8438747 article EN 2022 IEEE International Symposium on Medical Measurements and Applications (MeMeA) 2018-06-01

The hand disability can limit the integration of concerned subjects in daily life activities. quality impaired persons be augmented by using prosthetic hands. However, an effective realization body parts is challenging. Accurate identification desired gestures not straightforward. In this paper, multirate solution proposed for automated six different processing Surface Electromyogram (sEMG) signals. Firstly, signal divided into finite-length segments. Each segment called as instance....

10.1109/i2mtc48687.2022.9806648 article EN 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) 2022-05-16

Photodynamic therapy (PDT) is a promising minimally invasive alternative cancer treatment that, due to fluorescent properties of the drug (photosensitizer), can be used as theragnostic agent. The efficacy this largely relies on successful activation photosensitizer with appropriate light. While certain studies demonstrate comparable outcomes between LED and laser activation, there remains lack consensus regarding differential effects pulsed versus continuous In response limited availability...

10.1016/j.biosx.2023.100383 article EN cc-by-nc-nd Biosensors and Bioelectronics X 2023-07-16

Electrooculography is one way to measure the electrical activity of eyes. An electrooculogram (EOG) graphical representation signal generated from eye movement. The different applications developed in past decade based on these signals require a large amount data store and transmit, so compression necessary. This paper presents study conducted compress EOGs using turning point (TP) algorithm. For this purpose, were acquired BlueGain EOG device, algorithm was implemented MATLAB software. From...

10.1109/i2mtc50364.2021.9459880 article EN 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) 2021-05-17

A portable instrumental system was designed for the routine environmental monitoring of toxic volatile organic compounds (VOCs) in atmospheric conditions based on changes photoluminescence emission semiconductor nanoparticles (quantum dots) entrapped a sol-gel matrix as solid sensing material. The material displayed long-lived phosphorescent emission, which is quenched presence trace levels compound (acetone) gaseous atmospheres. developed instrument could measure and process after exposure...

10.3390/app10093246 article EN cc-by Applied Sciences 2020-05-07

Food safety and quality are the first steps in food chain. This work reports a low-cost easy-to-use optoelectronic measurement system for improving feed chain safety, based on near-infrared spectrometry (NIRS) technology. is significant challenge dairy farm technicians producers who need rapid reliable knowledge of forage their farms. In most cases, instrumentation suitable these specifications expensive difficult to operate. The core Texas Instruments´ NIRscan Nano Evaluation Module (EVM)...

10.20944/preprints202307.0624.v1 preprint EN 2023-07-10

This paper evaluates the risk of ocular dystonia-a condition marked by excessive blinking-using electrooculography. A commercial bioamplifier is employed to capture electrical activity eyes using dispensed surface electrodes. The continuous wavelet transform electrooculogram was estimated identify features related involuntary eye-blinking behavior and make classification. signal processing integrated into a novel application with simple graphical user interface oriented be used physicians....

10.1109/i2mtc53148.2023.10175944 article EN 2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) 2023-05-22
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