Search Results - "Sánchez‐Alzola, Alberto"
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An Approximation for Metal-Oxide Sensor Calibration for Air Quality Monitoring Using Multivariable Statistical Analysis
Published in Sensors (Basel, Switzerland) (13-07-2021)“…Good air quality is essential for both human beings and the environment in general. The three most harmful air pollutants are nitrogen dioxide (NO2), ozone…”
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Revisiting the minimum-norm problem
Published in Journal of inequalities and applications (10-02-2022)“…The design of optimal Magnetic Resonance Imaging (MRI) coils is modeled as a minimum-norm problem (MNP), that is, as an optimization problem of the form min x…”
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Minimization over Nonconvex Sets
Published in Symmetry (Basel) (01-07-2024)“…Minimum norm problems consist of finding the distance of a closed subset of a normed space to the origin. Usually, the given closed subset is also asked to be…”
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Supporting vectors vs. principal components
Published in AIMS mathematics (2023)“…Let $ T:X\to Y $ be a bounded linear operator between Banach spaces $ X, Y $. A vector $ x_0\in {\mathsf{S}}_X $ in the unit sphere $ {\mathsf{S}}_X $ of $ X $…”
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Non-Linear Inner Structure of Topological Vector Spaces
Published in Mathematics (Basel) (01-03-2021)“…Inner structure appeared in the literature of topological vector spaces as a tool to characterize the extremal structure of convex sets. For instance, in…”
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Convergence Analysis of the Straightforward Expansion Perturbation Method for Weakly Nonlinear Vibrations
Published in Mathematics (Basel) (01-05-2021)“…There are typically several perturbation methods for approaching the solution of weakly nonlinear vibrations (where the nonlinear terms are “small” compared to…”
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Active Shortening Simultaneous to Normal Faulting Based on GNSS, Geophysical, and Geological Data: The Seismogenic Ventas de Zafarraya Fault (Betic Cordillera, Southern Spain)
Published in Tectonics (Washington, D.C.) (01-02-2024)“…The central Betic Cordillera, southern Spain, is affected by an uplift related to the NNW–SSE Eurasia‐Nubia convergence and shallow ENE–WSW orthogonal…”
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A 3D joint interpretation of magnetotelluric and seismic tomographic models: The case of the volcanic island of Tenerife
Published in Computers & geosciences (01-12-2017)“…In this work we have done a 3D joint interpretation of magnetotelluric and seismic tomography models. Previously we have described different techniques to…”
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The Campo de Dalias GNSS Network Unveils the Interaction between Roll-Back and Indentation Tectonics in the Gibraltar Arc
Published in Sensors (Basel, Switzerland) (09-03-2022)“…The Gibraltar Arc includes the Betic and Rif Cordilleras surrounding the Alboran Sea; it is formed at the northwest-southeast Eurasia-Nubia convergent plate…”
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The Padul normal fault activity constrained by GPS data: Brittle extension orthogonal to folding in the central Betic Cordillera
Published in Tectonophysics (21-08-2017)“…The Padul Fault is located in the Central Betic Cordillera, formed in the framework of the NW-SE Eurasian-African plate convergence. In the Internal Zone,…”
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Crustal velocity and strain rate fields in the Balearic Islands based on continuous GPS time series from the XGAIB network (2010–2013)
Published in Journal of geodynamics (01-12-2014)“…•We model the crustal velocity and strain rate fields in the Balearic Islands.•We use continuous GPS observations from a permanent GNSS network.•The strains…”
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Exact Solutions to the Maxmin Problem max‖Ax‖ Subject to ‖Bx‖≤1
Published in Mathematics (Basel) (01-01-2020)“…In this manuscript we provide an exact solution to the maxmin problem max ∥ A x ∥ subject to ∥ B x ∥ ≤ 1 , where A and B are real matrices. This problem comes…”
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Exact solutions to $\displaystyle{\max_{\|x\|=1} \sum_{i=1}^\infty\|T_i(x)\|^2}$ with applications to Physics, Bioengineering and Statistics
Published 09-02-2024“…Commun Nonlinear Sci Numer Simulat 82 (2020) 105054 The supporting vectors of a matrix A are the solutions of max || x ||_2 =1 {||Ax||_2^2}. The generalized…”
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Exact Solutions to the Maxmin Problem max ||Ax|| Subject to ||Bx||<= 1
Published 09-02-2024“…Mathematics 2020, 8(1), 85 In this manuscript we provide an exact solution to the maxmin problem max ||Ax|| subject to ||Bx||<= 1, where A and B are real…”
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Exact solutions to max ∥ x ∥ = 1 ∑ i = 1 ∞ ∥ T i ( x ) ∥ 2 with applications to Physics, Bioengineering and Statistics
Published in Communications in nonlinear science & numerical simulation (01-03-2020)“…The supporting vectors of a matrix A are the solutions of max x 2=1 Ax 2 2. The generalized supporting vectors of matrices A 1 ,. .. , A k are the solutions of…”
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Exact solutions to max ... with applications to Physics, Bioengineering and Statistics
Published in Communications in nonlinear science & numerical simulation (01-03-2020)“…The supporting vectors of a matrix A are the solutions of max ... The generalized supporting vectors of matrices A1,...,Ak are the solutions of ... Notice that…”
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Exact solutions to max∥x∥=1∑i=1∞∥Ti(x)∥2 with applications to Physics, Bioengineering and Statistics
Published in Communications in nonlinear science & numerical simulation (01-03-2020)“…•The generalized supporting vectors have been proved to be useful in many applied disciplines (see [9]), like Physics, Engineering and Statistics.•We provide…”
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Subsidence and current strain patterns on Tenerife Island (Canary Archipelago, Spain) derived from continuous GNSS time series (2008–2015)
Published in Journal of volcanology and geothermal research (15-11-2016)“…In this paper we present the current crustal deformation model of Tenerife Island derived from daily CGPS time series processing (2008–2015). Our results…”
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