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Optimum Solutions of Systems of Differential Equations via Best Proximity Points in b-Metric Spaces
; ; De la Sen Parte, Manuel 
(MDPI, 2023-01-21)
(MDPI, 2023-01-21)
This paper deals with the existence of an optimum solution of a system of ordinary differential equations via the best proximity points. In order to obtain the optimum solution, we have developed the best proximity point ...
Stability and Controllability Study for Mixed Integral Fractional Delay Dynamic Systems Endowed with Impulsive Effects on Time Scales
Hammad, Hasanen A. ; De la Sen Parte, Manuel (MDPI, 2023-01-13)
; De la Sen Parte, Manuel (MDPI, 2023-01-13)
In this article, we investigate a novel class of mixed integral fractional delay dynamic systems with impulsive effects on time scales. Also, fixed-point techniques are applied to study the existence and uniqueness of a ...
Rotational Speed Control Using ANN-Based MPPT for OWC Based on Surface Elevation Measurements
; Garrido Hernández, Izaskun ; Garrido Hernández, Aitor Josu ; De la Sen Parte, Manuel (MDPI, 2020-11-16)
; Garrido Hernández, Aitor Josu ; De la Sen Parte, Manuel (MDPI, 2020-11-16)
This paper presents an ANN-based rotational speed control to avoid the stalling behavior in Oscillating Water Columns composed of a Doubly Fed Induction Generator driven by a Wells turbine. This control strategy uses ...
Complementary Airflow Control of Oscillating Water Columns for Floating Offshore Wind Turbine Stabilization
; ; Garrido Hernández, Izaskun ; Garrido Hernández, Aitor Josu ; De la Sen Parte, Manuel (MDPI, 2021-06-12)
; Garrido Hernández, Aitor Josu ; De la Sen Parte, Manuel (MDPI, 2021-06-12)
The implementation and integration of new methods and control techniques to floating offshore wind turbines (FOWTs) have the potential to significantly improve its structural response. This paper discusses the idea of ...
Self-Adaptive Global-Best Harmony Search Algorithm-Based Airflow Control of a Wells-Turbine-Based Oscillating-Water Column
; Garrido Hernández, Izaskun ; Garrido Hernández, Aitor Josu ; De la Sen Parte, Manuel (MDPI, 2020-07-03)
; Garrido Hernández, Aitor Josu ; De la Sen Parte, Manuel (MDPI, 2020-07-03)
The Harmony Search algorithm has attracted a lot of interest in the past years because of its simplicity and efficiency. This led many scientists to develop various variants for many applications. In this paper, four ...
The Stability and Well-Posedness of Fixed Points for Relation-Theoretic Multi-Valued Maps
; ; ; De la Sen Parte, Manuel (MDPI, 2023-10-13)
(MDPI, 2023-10-13)
The purpose of this study is to present fixed-point results for Suzuki-type multi-valued maps using relation theory. We examine a range of implications that arise from our primary discovery. Furthermore, we present two ...
On the Stability and Equilibrium Points of Multistaged SI (n) R Epidemic Models
Nistal Riobello, Raúl ; De la Sen Parte, Manuel ; ; Ibeas Hernández, Asier ; Garrido Hernández, Aitor Josu (Hindawi Publishing, 2015)
; De la Sen Parte, Manuel ; ; Ibeas Hernández, Asier ; Garrido Hernández, Aitor Josu (Hindawi Publishing, 2015)
This paper relies on the concept of next generation matrix defined ad hoc for a new proposed extended SEIR model referred to as SI(n)R-model to study its stability. The model includes n successive stages of infectious ...
A Modelization of the Propagation of COVID-19 in Regions of Spain and Italy with Evaluation of the Transmission Rates Related to the Intervention Measures
Nistal Riobello, Raúl ; De la Sen Parte, Manuel ; Gabirondo Aranguren, Jon ; ; Garrido Hernández, Aitor Josu ; Garrido Hernández, Izaskun (MDPI, 2021-02-05)
; De la Sen Parte, Manuel ; Gabirondo Aranguren, Jon ; ; Garrido Hernández, Aitor Josu ; Garrido Hernández, Izaskun (MDPI, 2021-02-05)
Two discrete mathematical SIR models (Susceptible-Infectious-Recovered) are proposed for modelling the propagation of the SARS-CoV-2 (COVID-19) through Spain and Italy. One of the proposed models is delay-free while the ...
Approximate Solutions by Truncated Taylor Series Expansions of Nonlinear Differential Equations and Related Shadowing Property with Applications
De la Sen Parte, Manuel ; Ibeas Hernández, Asier ; Nistal Riobello, Raúl (Hindawi Publishing, 2014)
; Ibeas Hernández, Asier ; Nistal Riobello, Raúl (Hindawi Publishing, 2014)
This paper investigates the errors of the solutions as well as the shadowing property of a class of nonlinear differential equations which possess unique solutions on a certain interval for any admissible initial condition. ...
On a Discrete SEIR Epidemic Model with Two-Doses Delayed Feedback Vaccination Control on the Susceptible
De la Sen Parte, Manuel ; ; Ibeas Hernández, Asier ; Nistal Riobello, Raúl (MDPI, 2021-04-18)
; ; Ibeas Hernández, Asier ; Nistal Riobello, Raúl (MDPI, 2021-04-18)
A new discrete susceptible-exposed-infectious-recovered (SEIR) epidemic model is presented subject to a feedback vaccination effort involving two doses. Both vaccination doses, which are subject to a non-necessarily identical ...