Papers by GONZALO DOMINGUEZ
El tomo naliza con un resumen de las publicaciones en revistas cientícas y ponencias en congresos... more El tomo naliza con un resumen de las publicaciones en revistas cientícas y ponencias en congresos, nacionales e internacionales, el marco de trabajo en el que se ha desarrollado, las colaboraciones que se han realizado y las líneas de investigación futuras.
Circadian rhythm of salivary cortisol and cortisone in school-aged children born very preterm and adequate for gestational age
59th ESPE Annual Meeting (ESPE 2021 Online), 2021
Profit-driven churn prediction in mutual funds: a Multisegment approach
34th annual conference of the Belgian Operational Research Society, 2020
Diagnóstico por imagen de la patología metastásica extraaxial intracraneal
Poster: "SERAM 2012 / S-1032 / Diagnostico por imagen de la patologia metastasica extraaxial... more Poster: "SERAM 2012 / S-1032 / Diagnostico por imagen de la patologia metastasica extraaxial intracraneal" by: "C. Hernandez Rodriguez1, R. D. Tabernero Rico1, M. Gonzalo Dominguez2, I. Martin Garcia1, M. A. Martin Perez1, J. Marin Balbin1; 1Zamora/ES, 2Valladolid/ES"
El sector exterior de la economía española (1986-1995)
Development of a Backdrivable Vane-Type Rotary Actuator Using Magnetorheological Fluids
Seasonal 25-hydroxy Vitamin D3 Variations in School-aged Children from Santiago de Chile
Omega, 2021
This paper proposes a novel approach for profit-based classification for churn prediction in the ... more This paper proposes a novel approach for profit-based classification for churn prediction in the mutual fund industry. The maximum profit measure is redefined to address multiple segments that differ strongly in the average customer lifetime values (CLVs). The proposed multithreshold framework for churn prediction aims to maximize the profit of retention campaigns in binary classification settings. The multithreshold framework is empirically tested on data from a Chilean mutual fund company with varying and heterogeneous individual CLVs. Our results demonstrate the virtues of the proposed approach in achieving the best profit when compared to other metrics. Although presented in the context of investment companies, our framework can be implemented in any churn prediction task, representing an important contribution for decision-making in business analytics.
Journal of Magnetics, 2017
The effects of exposure to an extremely low-frequency magnetic field (25 Hz 20G) on animal cells ... more The effects of exposure to an extremely low-frequency magnetic field (25 Hz 20G) on animal cells have been studied. In some reports, stimulation was performed for fixed frequency and variations in magnitude; however, animal-cell experiments have established that both parameters play an important role. The present work undertook the modeling, simulation, and development of a uniform-magnetic-field generation system with variable frequency and stimulation intensity (0-60 Hz, 1-25G) for experimentation with cell cultures in situ. The results showed a coefficient of variation less than 1 % of the magnetic-field dispersion at the working volume, which is consistent with the corresponding simulation results demonstrating a uniform magnetic field. On the other hand, long-term tests during the characterization process indicated that increments of only 0.4°C in the working volume temperature will not be an interfering factor when experiments are carried out in in situ cell cultures.
The Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM, 2015
In recent years there has been interest in the development of magnetorheological actuators for ro... more In recent years there has been interest in the development of magnetorheological actuators for robotic applications with adjustable compliance. In this paper we explore the conceptualization, design and test of a new kind magnetorheological piston head design. Inside the head of this new damper a circular assembly of magnetorheological valves is used to control the damping force of the piston. The results show the feasibility of the new design, and its potential for compliant robotic applications.
IEEE/ASME Transactions on Mechatronics, 2017
A new magnetorheological piston head design inspired by toroidal electromagnets was proposed in p... more A new magnetorheological piston head design inspired by toroidal electromagnets was proposed in previous work as an alternative to conventional annular dampers. A prototype with a circular valve array integrated inside the piston head was built and tested to measure its passive performance. The mechanical, electromagnetic and hydraulic models used in the new design were explained, and the relevant parameters of the actuator were analysed to construct a mathematical model to estimate its performance. These works showed the feasibility of the concept and its potential as an alternative to current damper technology, but lacked a baseline for comparison. This paper reviews and widens this groundwork. It adds a magnetic FEM study to address the previously found leakage, and a new set of experiments, including a force controller; to compare its performance against a conventional annular piston head. The new findings show how the current force limitations can be overcome by striking a balance between the coil space and the size of electromagnet cores to achieve the performance of current dampers. They also highlight its potential in force control applications to provide a wider range of customization options, such as number and size of holes, electromagnets, and coils, and a better use of the active area of the gap.
Revista ORL, 2017
Conflicto de intereses: Los autores declaran no tener conflictos de intereses Imágenes: Los autor... more Conflicto de intereses: Los autores declaran no tener conflictos de intereses Imágenes: Los autores declaran haber obtenido las imágenes con el permiso de los pacientes Política de derechos y autoarchivo: se permite el autoarchivo de la versión post-print (SHERPA/RoMEO) Licencia CC BY-NC-ND. Licencia Creative Commons Atribución-NoComercial-SinDerivar 4.
Design optimisation and performance evaluation of a toroidal magnetorheological hydraulic piston head
2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2016
The advantages of mechanical compliance have driven the development of devices using new smart ma... more The advantages of mechanical compliance have driven the development of devices using new smart materials. A new kind of magnetorheological piston based on a toroidal array of magnetorheological valves, has been previously tested to prove its feasibility. However, being an initial prototype its potential was still limited by its complex design, and low output force. This study presents the revisions done to the design with several improvements targeting key performance parameters. An improved annular piston design is also introduced as comparison with conventional devices. The toroidal and annular piston head prototypes are built and tested, and their force performance compared with the previous iteration. The experimental results show an overall performance improvement of the toroidal assembly. However, the force model used in the study still fails to accurately predict the magnetic flux at the gaps of the piston head. This deviation is later verify and corrected using a FEM analysis. The force performance of the new toroidal assembly is on par with the commonplace annular design. It also displays a more linear behaviour, at the expense of lower energy efficiency. Finally, it also shows potential for a greater degree of customisation to meet different system requirements.
An iterative design methodology for the performance optimisation of magnetorheological piston head configurations
2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2016
This work focuses on the analysis of the performance parameters of a new magneto-rheological devi... more This work focuses on the analysis of the performance parameters of a new magneto-rheological device. Previously, a mathematical model of the actuator head was introduced; however, the complex relations between its parameters made its optimisation challenging, causing the device not to reach its full potential. In this work, the previous model is updated to fit a revised version of the toroidal design, as well as an annular design for comparison. The relations between different parameters are studied to find their trade-offs, and understand how they affect the performance of the actuators. Finally, an optimisation based on an iterative search for valid permutations of parameters, is used to find optimal combinations. Two prototypes are built and tested to validate the results of the optimisation. The study revealed the critical parameters of each design, which mostly depend on the relations between the magnetic flux density, and the active area exposed to the MRF; and successfully optimised the performance of the devices. However, work needs to be done to create a more complete tool with concrete guidelines for specific applications.
Modelling and simulation of a new magnetorheological linear device
2015 IEEE International Symposium on Robotics and Intelligent Sensors (IRIS), 2015
Interaction between humans and robots is expected to increase in the coming years. In order to en... more Interaction between humans and robots is expected to increase in the coming years. In order to ensure safety for the robot, its environment, and the people around it, it is necessary to have robust compliance actuation. Mechanically compliant devices such as magnetorheological actuators can ensure a high degree of safety through their intrinsic properties. This paper presents the modelling of a new kind of magnetorheological piston intended for linear actuation. An analysis using the reluctance method and an approximation of the Buckingham Reiner equation are used to develop the electromagnetic and hydraulic equations respectively, and key parameters of the system are presented. A simulation is done to evaluate the theoretical performance of the new piston design, its results are compared and validated by the experimental data obtained from a prototype. The simulation results show the capacity of the device for compliant actuation.
Influencia del color y la trayectoria de la pelota en la enseñanza del tenis
Entrenamiento En Alto Rendimiento 10 11 12 De Diciembre 1988 Actas Del Congreso Nacional De Tenis 1999 Isbn 84 95301 21 0 Pags 147 150, 1999
Utilització d'idiomes a l'assignatura No Grup íntegre en espanyol: Sí Grup íntegre en català: No ... more Utilització d'idiomes a l'assignatura No Grup íntegre en espanyol: Sí Grup íntegre en català: No Grup íntegre en anglès: català (cat) Llengua vehicular majoritària:
Los problemas económicos
Entendiendo La Economia 2001 Isbn 84 8429 359 9 Pags 9 26, 2001
Effects of the Organic Law of Electoral Processes on the Results of the Deputy Elections Held in September 2010
Argos, Dec 1, 2011
Estructuras de mercado y comercio internacional
Entendiendo La Economia 2001 Isbn 84 8429 359 9 Pags 59 84, 2001
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Papers by GONZALO DOMINGUEZ