BackExaminar Artículos por departamento (eus.) "Matematika aplikatua"
Now showing items 21-40 of 96
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Chemical signatures in fin spine edge of Atlantic bluefin tuna (Thunnus thynnus) can serve as habitat markers of geographically distinct marine environments
; ; Bidegain Cancer, Gorka
; ; ; ; ; Murua Auricenea, Hilario ; ; ; (Elsevier, 2022-11)
Chemical fingerprints in otoliths are commonly used as natural habitat markers in fishes. Alternatively, the first dorsal fin spine can provide valuable chemical information and may be more suitable for studying (i) ... -
Cohomological tautness of singular Riemannian foliations
Royo Prieto, José Ignacio; ; (Springer, 2018-11-16)
For a Riemannian foliation F on a compact manifold M, J. A. Alvarez Lopez proved that the geometrical tautness of F, that is, the existence of a Riemannian metric making all the leaves minimal submanifolds of M, can be ... -
Combining statistical techniques to predict postsurgical risk of 1-year mortality for patients with colon cancer
Arostegui Madariaga, Inmaculada; González, Nerea; Fernández de Larrea, Nerea; Lázaro Aramburu, Santiago; Baré Mañas, Marisa; Redondo, Maximino; Sarasqueta, Cristina; Garcia-Gutierrez, Susana; Quintana López, José María (Dove Medical Press, 2018)
Introduction: Colorectal cancer is one of the most frequently diagnosed malignancies and a common cause of cancer-related mortality. The aim of this study was to develop and validate a clinical predictive model for 1-year ... -
Crank-Nicholson method for rate equations in powder random lasers
García Ramiro, María Begoña; Illarramendi Echave, María Aránzazu ; Zubia Zaballa, Joseba Andoni (IOP Publishing, 2015)
In this work, we show the resolution of the rate equations in powder random lasers by using the Crank-Nicholson finite difference method. Light propagation in our powders is described by the model of light diffusion. The ... -
Definition of the Future Skills Needs of Job Profiles in the Renewable Energy Sector
Arcelay, Irene; Goti, Aitor; Oyarbide-Zubillaga, Aitor; Akyazi, Tugce; Alberdi Celaya, Elisabete; Garcia-Bringas, Pablo (MDPI, 2021-05-02)
The growth of the renewable energy industry is happening at a swift pace pushed, by the emergence of Industry 4.0. Smart technologies like artificial intelligence (AI), Big Data, the Internet of Things (IoT), Digital Twin ... -
Design, Fabrication and Testing of a High-Sensitive Fibre Sensor for Tip Clearance Measurements
Durana Apaolaza, Gaizka; Amorebieta Herrero, Josu ; Fernández Bello, Rubén ; ; Arrospide Zabala, Eneko ; ; Zubia Zaballa, Joseba Andoni (MDPI, 2018-08)
A highly sensitive fibre bundle-based reflective optical sensor has been designed and fabricated for Tip Clearance measurements in a turbine rig. The sensor offers high spatial and temporal resolution. The sensor probe ... -
Dinosaur swim tracks from the Lower Cretaceous of La Rioja, Spain: An ichnological approach to non-common behaviours
; ; Valle Melón, José Manuel; ; ; ; ; (Elsevier, 2023-07)
The reconstruction of behavioural patterns performed by non-avian dinosaurs is an important task of palaeontology in order to globally understand how these animals interacted with their environment. Their relation with ... -
Do jumps and cojumps matter for electricity price forecasting? Evidence from the German-Austrian day-ahead market
Ciarreta Antuñano, Aitor; ; Zárraga Alonso, Ainhoa (Elsevier, 2022-11)
This paper analyzes the potential for including jumps and cojumps in electricity price forecasting models. The study is carried out on the German-Austrian day-ahead electricity market with a multivariate framework in which ... -
Effects of Fabrication Methods on the Performance of Luminescent Solar Concentrators Based on Doped Polymer Optical Fibers
Arrospide Zabala, Eneko; Illarramendi Leturia, María Asunción ; Ayesta Ereño, Igor ; Guarrotxena, Nekane; García, Olga; Zubia Zaballa, Joseba Andoni ; Durana Apaolaza, Gaizka (MDPI, 2021-01-28)
In this work, we detail two types of fabrication processes of four polymer optical fibers doped with lumogen dyes. The fiber preforms have been manufactured with two different methods: extrusion and casting. We have compared ... -
Enhancing Confusion Entropy (CEN) for Binary and Multiclass Classification
(Universita Di Palermo, 2019-01-14)Different performance measures are used to assess the behaviour, and to carry out the comparison, of classifiers in Machine Learning. Many measures have been defined on the literature, and among them, a measure inspired ... -
Estimation of preterm labor immediacy by nonlinear methods
Malaina Celada, Iker; Martínez Fernández, Luis ; ; ; ; ; ; ; Pérez Pinilla, Martín Blas ; (Public Library Science, 2017-06-01)
Preterm delivery affects about one tenth of human births and is associated with an increased perinatal morbimortality as well as with remarkable costs. Even if there are a number of predictors and markers of preterm delivery, ... -
Expansion of Human Limbal Epithelial Stem/Progenitor Cells Using Different Human Sera: A Multivariate Statistical Analysis
Hernáez Moya, Raquel; González, Sheyla; Urkaregi Etxepare, Arantza; José Ignacio Pijoan Zubizarreta; Deng, Sophie X.; Andollo Victoriano, María Noelia (MDPI, 2020-07-25)
Transplantation of human cultured limbal epithelial stem/progenitor cells (LESCs) has demonstrated to restore the integrity and functionality of the corneal surface in about 76% of patients with limbal stem cell deficiency. ... -
Experimental and numerical study of the emissivity of rolled aluminum
; ; González de Arrieta Martinez, Iñigo; Echániz Ariceta, Telmo ; López, Gabriel Alejandro (Elsevier, 2022-12)
Directional spectral emissivity measurements on a rolled aluminum sheet are reported between 423 and 823 K in vacuum. The results are compared to available literature data and to theoretical predictions, revealing the ... -
Fabrication and characterization of active polymer optical fibers with a ring-doped structure
Ayesta Ereño, Igor; Azkune Ulla, Mikel ; Illarramendi Leturia, María Asunción ; Arrospide Zabala, Eneko ; Zubia Zaballa, Joseba Andoni ; Durana Apaolaza, Gaizka (Elsevier, 2023-01)
This paper employs the solution-doping technique for the fabrication of polymer optical fibers (POFs) doped with two perylene derivatives, Lumogen Yellow 083 and Lumogen Red 305, in different combinations. With the ... -
Fabrication and Characterization of Polymer Optical Fibers Doped with Perylene-Derivatives for Fluorescent Lighting Applications
Parola Domingo, Itxaso; Arrospide Zabala, Eneko; ; Illarramendi Leturia, María Asunción ; Durana Apaolaza, Gaizka ; Guarrotxena, Nekane; García, Olga; Zubia Zaballa, Joseba Andoni (MDPI, 2017-08)
Four different dye-doped polymer optical fibers (POFs) have been fabricated following a two-step fabrication process of preform extrusion and fiber drawing, using poly-(methyl methacrylate) (PMMA) as host material and dye ... -
Fabrication of Active Polymer Optical Fibers by Solution Doping and Their Characterization
Ayesta Ereño, Igor; Azkune Ulla, Mikel ; Arrospide Zabala, Eneko ; Arrue Aramburu, Juan Antonio ; Illarramendi Leturia, María Asunción ; Durana Apaolaza, Gaizka ; Zubia Zaballa, Joseba Andoni (MDPI, 2018-12-31)
This paper employs the solution-doping technique for the fabrication of active polymer optical fibers (POFs), in which the dopant molecules are directly incorporated into the core of non-doped uncladded fibers. Firstly, ... -
Fabrication Quality Assessment Based on the Coupling of a Dual-Core Microstructured Polymer Optical Fiber
Berganza Valmala, Amaia; Arrospide Zabala, Eneko; Amorebieta Herrero, Josu ; Zubia Zaballa, Joseba Andoni ; Durana Apaolaza, Gaizka (MDPI, 2021-11-09)
In this paper we report on the theoretical analysis and fabrication of a dual-core microstructured polymer optical fiber (mPOF) and demonstrate how the coupling characteristics of a dual-core mPOF may be a key factor to ... -
Facilitators and barriers to participation in population-based colorectal cancer screening programme from the perspective of healthcare professionals: Qualitative research study
Unanue Arza, Saloa; Portillo Villares, María Isabel; Idigoras Rubio, Isabel; Arostegui Madariaga, Inmaculada ; Arana Arri, Eunate (Wiley, 2021-11)
Objective High participation determines the success of colorectal cancer screening programmes in reducing incidence and mortality. The factors that determine participation must be studied from the perspective of professionals ... -
Fast Driving of a Particle in Two Dimensions without Final Excitation
; Palmero Lazcoz, Mikel; Lizuain Lilly, Ion ; Muga Francisco, Juan Gonzalo (MDPI, 2022-11-19)
Controlling the motional state of a particle in a multidimensional space is key for fundamental science and quantum technologies. Applying a recently found two-dimensional invariant combined with linear invariants, we ... -
Fine-tune of lignin properties by its fractionation with a sequential organic solvent extraction
Izaguirre Aróstegui, Nagore; Robles Barrios, José Eduardo; Llano Ponte, Rodrigo; Labidi Bouchrika, Jalel; Erdocia Iriarte, Xabier (Elsevier, 2022-01)
[EN] In this work, different lignins were obtained from two different extraction methods (kraft and organosolv) but from the same raw material (Eucalyptus globulus sp.). They were subsequently fractionated to determine the ...