BackExaminar por departamento (cas.) "Matemática aplicada"
Now showing items 61-80 of 199
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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 ... -
Does expansion of the introduced Manila clam Ruditapes philippinarum cause competitive displacement of the European native clam Ruditapes decussatus?
(Elsevier, 2013-05-03)In several estuaries or lagoons of Europe the introduced Manila clam Ruditapes philippinarum has supplanted the native grooved carpet shell clam Ruditapes decussatus by occupying almost entirely its ecological niche and ... -
Education and Sustainability: a model for different Engineering degrees
; Bravo Sevilla, Eugenio; Garcia Zabalbeitia, Maria Olatz ; Rebollar Echevarría, Carolina (IOTPE, 2023-06-01)
Technologies related to the Internet of Things (IoT) have seen remarkable growth in recent years. This has facilitated, among many other reasons, that monitoring systems have spread in many everyday areas, including ... -
Effect of the sampling rate on the assessment of flicker severity due to phase jumps
Gutiérrez Ruiz, José Julio; ; Ruiz Ojeda, Jesús María ; ; Saiz Agustín, Purificación ; (IEEE, 2011)
This paper presents an analysis of the effect of the sampling rate on the calculation by a digital flickermeter of the flicker severity caused by phase jumps. The new edition of the IEC 61000-4-15 standard includes an ... -
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; ; 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 ... -
Emissivity measurements conducted on intermetallic γ-TiAl-based alloys for aeronautical applications
; ; Echániz Ariceta, Telmo; ; ; ; López, Gabriel Alejandro (Elsevier, 2023-11)
The directional spectral emissivity of a Ti–48Al–2Nb–2Cr alloy (in at.%), 4822 alloy, and a Ti-43.5Al–4Nb–1Mo-0.1B alloy (in at.%),TNM alloy, used in the aeronautical industry, are measured between 150 and 850 °C. The ... -
Empirical Analysis of Medium Wave Field Strength Prediction in Urban Environments
; Peña Valverde, Ivan; Angulo Pita, Itziar ; Angueira Buceta, Pablo ; De la Vega Moreno, David ; (IEEE, 2010-05-13)
[EN] This paper presents results obtained from four extensive field trials of medium wave DRM (Digital Radio Mondiale) which were carried out in Madrid (Spain), Delhi (India) and Mexico D.F. (Mexico) using different ... -
Empirical Evaluation of the Impact of Wind Turbines on DVB-T Reception Quality
Angulo Pita, Itziar; De la Vega Moreno, David ; ; ; ; ; ; Angueira Buceta, Pablo (IEEE, 2011-12-09)
[EN] This paper describes the results of two extensive measurement campaigns for evaluating the potential impact of scattered signals from wind turbines on terrestrial DTV reception quality in the UHF band. A detailed ... -
Energy consumption for shortcuts to adiabaticity
; ; ; Tobalina Novo, Ander; ; ; (APS, 2017-08-25)
Shortcuts to adiabaticity let a system reach the results of a slow adiabatic process in a shorter time. We propose to quantify the “energy cost” of the shortcut by the energy consumption of the system enlarged by including ... -
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 ... -
Estimating a new suitable catch size for two clam species: Implications for shellfishery management
(Elsevier, 2012-10-18)The present study analyzes the weight gain patterns per unit of size and estimates the minimum suitable catch size of two clam species: the carpet shell clam Ruditapes decussatus and the Manila clam Ruditapes philippinarum. ... -
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, ... -
Evaluation of chest compression artefact removal based on rhythm assessments made by clinicians
Alonso, Erik; ; ; ; ; ; (Elsevier, 2018-01-31)
Aim To evaluate the performance of a state-of-the-art cardiopulmonary resuscitation (CPR) artefact suppression method by assessing to what extent the filtered electrocardiogram (ECG) can be correctly diagnosed by emergency ... -
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 ... -
Experimental Study of the Response of Efficient Lighting Technologies to Complex Voltage Fluctuations
; Gutiérrez Ruiz, José Julio; ; Saiz Agustín, Purificación ; ; (Elsevier, 2014-07-09)
The replacement of incandescent lamps with more energy-efficient lighting technologies has a direct influence on the way flicker is measured. The International Electrotechnical Commission (IEC) established in the 61000-4-15 ... -
Experiments of Trust Prediction in Social Networks by Artificial Neural Networks
(Taylor and Francis, 2015-03-24)Social network online services are growing at an exponential pace, both in quantity of users and diversity of services; thus, the evaluation of trust in the interaction among users and toward the system is a central issue ... -
Exploring chemical reactions to enhance thermal and dispersion stability of kraft and organosolv lignin
(Elsevier, 2024-04)Lignin has been overlooked and used as a waste for long due to its complex and partially hydrophobic structure. Many efforts have been carried out to overcome these deficiencies and apply it as a high-value product, which ... -
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 ; ; 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; (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 ...