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280 results on '"Sánchez-Lasheras, Fernando"'

3. Adaptive Optics Correction Using Recurrent Neural Networks for Wavefront Prediction

Author

Fernández, Saúl Pérez, Roca, Alejandro Buendía, González Gutiérrez, Carlos, Rodríguez, Javier Rodríguez, Álvarez, Santiago Iglesias, Tutasig, Ronny Anangonó, Sánchez Lasheras, Fernando, de Cos Juez, Francisco Javier, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, García Bringas, Pablo, editor, Pérez García, Hilde, editor, Martínez de Pisón, Francisco Javier, editor, Martínez Álvarez, Francisco, editor, Troncoso Lora, Alicia, editor, Herrero, Álvaro, editor, Calvo Rolle, José Luis, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2023
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4. A Problem-Based Learning Proposal to Teach Numerical and Analytical Nonlinear Root Searching Methods

Author

González-Santander, Juan Luis and Sánchez-Lasheras, Fernando

Abstract

Nonlinear equations are usually solved numerically. However, approximated analytical solutions of nonlinear equations are useful as an initial iteration point for numerical methods. Furthermore, these analytical approximations are sometimes quite close to the actual root. In order to teach at undergraduate level how to perform this kind of approximation, we propose problem-based learning with some nonlinear equations extracted from Applied Sciences. We also present a simple method to analytically solve nonlinear equations which are not solvable by standard computer algebra solvers.

Published
2022
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7. Time Series Analysis for the COMEX Copper Spot Price by Using Support Vector Regression

Author

García-Gonzalo, Esperanza, García Nieto, Paulino José, Gracia Rodríguez, Javier, Sánchez Lasheras, Fernando, Fidalgo Valverde, Gregorio, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Herrero, Álvaro, editor, Cambra, Carlos, editor, Urda, Daniel, editor, Sedano, Javier, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2021
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8. A Multivariate Approach to Time Series Forecasting of Copper Prices with the Help of Multiple Imputation by Chained Equations and Multivariate Adaptive Regression Splines

Author

Sánchez Lasheras, Fernando, Gracia Rodríguez, Javier, García Nieto, Paulino José, García-Gonzalo, Esperanza, Fidalgo Valverde, Gregorio, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Herrero, Álvaro, editor, Cambra, Carlos, editor, Urda, Daniel, editor, Sedano, Javier, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2021
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12. Missing Data Imputation for Continuous Variables Based on Multivariate Adaptive Regression Splines

Author

Sánchez Lasheras, Fernando, García Nieto, Paulino José, García-Gonzalo, Esperanza, Argüeso Gómez, Francisco, Rodríguez Iglesias, Francisco Javier, Suárez Sánchez, Ana, Santos Rodríguez, Jesús Daniel, Sánchez, María Luisa, González-Nuevo, Joaquín, Bonavera, Laura, Toffolatti, Luigi, Fernández Menéndez, Susana del Carmen, de Cos Juez, Francisco Javier, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, de la Cal, Enrique Antonio, editor, Villar Flecha, José Ramón, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2020
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14. New Robotic Telescope system progress towards critical design review

Author

Marshall, Heather K., Spyromilio, Jason, Usuda, Tomonori, Copley, David, Ashley, Richard, Bates, Stuart, Bento, João, Buntin, Sebastian, Copperwheat, Chris, Garner, Adam, Garton, Beth, Heffernan, David, Jermak, Helen, Law, David, McGrath, Adrian, Miossec, Chloé, Ranjbar, Ali, Smith, Robert, Steele, Iain, Goded, Alejandra, Gutiérrez, Carlos M., Prieto, Alberto, Puga, Marta, Quintana, César, Rebolo, Rafael, De Cos, Javier, Gracia Rodriguez, Javier, Rodríguez Pereira, César, Sánchez Lasheras, Fernando, and Abárzuza, Fernando

Published
2024
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15. Effect of Applying 1% Metformin on Guided Bone Regeneration Processes with Bovine-Derived Xenografts.

Author

Montalbán-Vadillo, Oier, Pérez-Pevida, Esteban, Viteri-Agustín, Iratxe, Chávarri-Prado, David, Estrada-Martínez, Alejandro, Diéguez-Pereira, Markel, Sánchez-Lasheras, Fernando, and Brizuela-Velasco, Aritza

Subjects
GUIDED bone regeneration, OSTEOBLASTS, CALVARIA, METFORMIN, XENOGRAFTS, BONE growth
Abstract

Background: Although xenografts have shown successful results in GBR procedures due to their osteoconductive properties, many authors have opted to add co-adjuvant drugs to favor osteogenesis and differentiate cells into an osteoblastic lineage. Metformin has been shown to have bone-protective properties, regulating osteoclast differentiation, as well as the ability to promote osteoblast mineralization and differentiation. The present study aimed to evaluate the effect of the local application of a 1% metformin solution on bone neoformation in the treatment of an experimental bone defect in a guided bone regeneration animal model with a particulated bovine hydroxyapatite xenograft with hyaluronate. Methods: With this purpose in mind, two critical defects with 8 mm diameter and 0.5 mm depth were created in eight male New Zealand rabbit calvarias. Titanium cylinders were fixed in each defect and filled with particulate hydroxyapatite of bovine origin and sodium hyaluronate, with sterile injectable saline added to the control group and sterile 1% metformin solution added to the test group. At 6 weeks, the animals were euthanized, and samples were obtained and prepared for histomorphometric analysis. Results: A higher percentage of new bone formation was observed in the metformin samples than in the control samples, both in the region closest to the animal's calvaria and in the most distal region analyzed. A higher average bone–biomaterial contact percentage was observed in the samples, with metformin in both the proximal and distal regions. There was no statistically significant difference in the mean value in either region in both parameters. Conclusion: The local application of a 1% metformin solution in an animal model of guided bone regeneration with particulate bovine hydroxyapatite and hyaluronate resulted in greater bone neoformation and xenograft osseointegration than in the control group. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Convolutional CARMEN: Tomographic Reconstruction for Night Observation

Author

García Riesgo, Francisco, Suárez Gómez, Sergio Luis, Sánchez Lasheras, Fernando, González Gutiérrez, Carlos, Peñalver San Cristóbal, Carmen, de Cos Juez, Francisco Javier, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Pérez García, Hilde, editor, Sánchez González, Lidia, editor, Castejón Limas, Manuel, editor, Quintián Pardo, Héctor, editor, and Corchado Rodríguez, Emilio, editor

Published
2019
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17. Evolutionary Algorithm for Pathways Detection in GWAS Studies

Author

Díez Díaz, Fidel, Sánchez Lasheras, Fernando, de Cos Juez, Francisco Javier, Martín Sánchez, Vicente, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Pérez García, Hilde, editor, Sánchez González, Lidia, editor, Castejón Limas, Manuel, editor, Quintián Pardo, Héctor, editor, and Corchado Rodríguez, Emilio, editor

Published
2019
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21. Genetic Algorithm Based on Support Vector Machines for Computer Vision Syndrome Classification

Author

Artime Ríos, Eva María, Seguí Crespo, María del Mar, Suarez Sánchez, Ana, Suárez Gómez, Sergio Luis, Sánchez Lasheras, Fernando, Kacprzyk, Janusz, Series editor, Pal, Nikhil R., Advisory editor, Bello Perez, Rafael, Advisory editor, Corchado, Emilio S., Advisory editor, Hagras, Hani, Advisory editor, Kóczy, László T., Advisory editor, Kreinovich, Vladik, Advisory editor, Lin, Chin-Teng, Advisory editor, Lu, Jie, Advisory editor, Melin, Patricia, Advisory editor, Nedjah, Nadia, Advisory editor, Nguyen, Ngoc Thanh, Advisory editor, Wang, Jun, Advisory editor, Pérez García, Hilde, editor, Alfonso-Cendón, Javier, editor, Sánchez González, Lidia, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2018
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22. PoDA Algorithm: Predictive Pathways in Colorectal Cancer

Author

Gonzalez-Donquiles, Carmen, Sanchez-Lasheras, Fernando, Alonso-Molero, Jessica, Vilorio-Marqués, Laura, Fernandez-Villa, Tania, Tardón, Guillermo González, Molina, Antonio José, Martin, Vicente, Kacprzyk, Janusz, Series editor, Pal, Nikhil R., Advisory editor, Bello Perez, Rafael, Advisory editor, Corchado, Emilio S., Advisory editor, Hagras, Hani, Advisory editor, Kóczy, László T., Advisory editor, Kreinovich, Vladik, Advisory editor, Lin, Chin-Teng, Advisory editor, Lu, Jie, Advisory editor, Melin, Patricia, Advisory editor, Nedjah, Nadia, Advisory editor, Nguyen, Ngoc Thanh, Advisory editor, Wang, Jun, Advisory editor, Pérez García, Hilde, editor, Alfonso-Cendón, Javier, editor, Sánchez González, Lidia, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2018
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23. Outcome Prediction for Salivary Gland Cancer Using Multivariate Adaptative Regression Splines (MARS) and Self-Organizing Maps (SOM)

Author

Lequerica-Fernández, Paloma, Peña, Ignacio, Sánchez Lasheras, Fernando, Iglesias Rodrigez, Francisco Javier, González Gutiérrez, Carlos, De Vicente, Juan Carlos, Kacprzyk, Janusz, Series editor, Pal, Nikhil R., Advisory editor, Bello Perez, Rafael, Advisory editor, Corchado, Emilio S., Advisory editor, Hagras, Hani, Advisory editor, Kóczy, László T., Advisory editor, Kreinovich, Vladik, Advisory editor, Lin, Chin-Teng, Advisory editor, Lu, Jie, Advisory editor, Melin, Patricia, Advisory editor, Nedjah, Nadia, Advisory editor, Nguyen, Ngoc Thanh, Advisory editor, Wang, Jun, Advisory editor, Pérez García, Hilde, editor, Alfonso-Cendón, Javier, editor, Sánchez González, Lidia, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2018
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24. A Hybrid Algorithm for the Assessment of the Influence of Risk Factors in the Development of Upper Limb Musculoskeletal Disorders

Author

Busto Serrano, Nélida M., García Nieto, Paulino J., Suárez Sánchez, Ana, Sánchez Lasheras, Fernando, Riesgo Fernández, Pedro, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, de Cos Juez, Francisco Javier, editor, Villar, José Ramón, editor, de la Cal, Enrique A., editor, Herrero, Álvaro, editor, Quintián, Héctor, editor, Sáez, José António, editor, and Corchado, Emilio, editor

Published
2018
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25. A Hybrid Algorithm for the Prediction of Computer Vision Syndrome in Health Personnel Based on Trees and Evolutionary Algorithms

Author

Artime Ríos, Eva María, Sánchez Lasheras, Fernando, Suárez Sánchez, Ana, Iglesias-Rodríguez, Francisco J., Seguí Crespo, María del Mar, Hutchison, David, Series Editor, Kanade, Takeo, Series Editor, Kittler, Josef, Series Editor, Kleinberg, Jon M., Series Editor, Mattern, Friedemann, Series Editor, Mitchell, John C., Series Editor, Naor, Moni, Series Editor, Pandu Rangan, C., Series Editor, Steffen, Bernhard, Series Editor, Terzopoulos, Demetri, Series Editor, Tygar, Doug, Series Editor, Weikum, Gerhard, Series Editor, de Cos Juez, Francisco Javier, editor, Villar, José Ramón, editor, de la Cal, Enrique A., editor, Herrero, Álvaro, editor, Quintián, Héctor, editor, Sáez, José António, editor, and Corchado, Emilio, editor

Published
2018
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29. A Heuristic Method for Solving Polynomial Matrix Equations.

Author

González-Santander, Juan Luis and Sánchez Lasheras, Fernando

Subjects
*HEURISTIC, *POLYNOMIALS, *MATRIX decomposition, *EQUATIONS, *MATRICES (Mathematics)
Abstract

We propose a heuristic method to solve polynomial matrix equations of the type ∑ k = 1 m a k X k = B , where a k are scalar coefficients and X and B are square matrices of order n. The method is based on the decomposition of the B matrix as a linear combination of the identity matrix and an idempotent, involutive, or nilpotent matrix. We prove that this decomposition is always possible when n = 2 . Moreover, in some cases we can compute solutions when we have an infinite number of them (singular solutions). This method has been coded in MATLAB and has been compared to other methods found in the existing literature, such as the diagonalization and the interpolation methods. It turns out that the proposed method is considerably faster than the latter methods. Furthermore, the proposed method can calculate solutions when diagonalization and interpolation methods fail or calculate singular solutions when these methods are not capable of doing so. [ABSTRACT FROM AUTHOR]

Published
2024
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33. Student Performance Prediction Applying Missing Data Imputation in Electrical Engineering Studies Degree

Author

Crespo-Turrado, Concepción, Casteleiro-Roca, José Luis, Sánchez-Lasheras, Fernando, López-Vázquez, José Antonio, de Cos Juez, Francisco Javier, Calvo-Rolle, José Luis, Corchado, Emilio, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Martínez-Álvarez, Francisco, editor, Troncoso, Alicia, editor, Quintián, Héctor, editor, and Corchado, Emilio, editor

Published
2016
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45. Increased incidence of Graves' disease during the SARS‐CoV2 pandemic

Author

Barajas Galindo, David E., primary, Ramos Bachiller, Beatriz, additional, González Roza, Lucía, additional, García Ruiz de Morales, José María, additional, Sánchez Lasheras, Fernando, additional, González Arnáiz, Elena, additional, Ariadel Cobo, Diana, additional, Ballesteros Pomar, María D., additional, and Rodríguez, Isidoro Cano, additional

Published
2022
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46. A Biomechanical Analysis of the Influence of the Morfology of the Bone Blocks Grafts on the Transfer of Tension or Load to the Soft Tissue by Means of the Finite Elements Method

Author

Gil-Marques, Blanca, primary, Pallarés-Sabater, Antonio, additional, Brizuela-Velasco, Aritza, additional, Sánchez Lasheras, Fernando, additional, Lázaro-Calvo, Pedro, additional, Gómez-Adrián, María Dolores, additional, and Larrazábal-Morón, Carolina, additional

Published
2022
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49. Update and preliminary performance analysis of the NRT structure

Author

Rodríguez Pereira, César, primary, de la Roza, Fruela, additional, Gracia Rodríguez, Javier, additional, Sánchez Lasheras, Fernando, additional, Ranjbar, Ali, additional, Copley, David, additional, Torres-Gil, Miguel A., additional, Harvey, Éamonn J., additional, Oria Carerras, Asier, additional, and de Cos Juez, Francisco Javier, additional

Published
2022
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