• Cooperation on capacitated inventory situations with fixed holding costs 

      Fiestras Janeiro, María Gloria; García-Jurado, Ignacio; Meca Martínez, Ana; Mosquera Rodríguez, Manuel Alfredo (Elsevier, 2015-03-16)
      [Abstract] In this paper we analyze a situation in which several firms deal with inventory problems concerning the same type of product. We consider that each firm uses its limited capacity warehouse for storing purposes ...
    • Prediction of forest fires occurrences with area-level Poisson mixed models 

      Boubeta, Miguel; Lombardía, María José; Marey Pérez, Manuel Francisco; Morales, Domingo (Academic Press, 2015-05-01)
      [Abstract] The number of fires in forest areas of Galicia (north-west of Spain) during the summer period is quite high. Local authorities are interested in analyzing the factors that explain this phenomenon. Poisson ...
    • Empirical best prediction under area-level Poisson mixed models 

      Boubeta, Miguel; Lombardía, María José; Morales, Domingo (Springer, 2015-12-19)
      [Abstract] The paper studies the applicability of area-level Poisson mixed models to estimate small area counting indicators. Among the available procedures for fitting generalized linear models, the method of moments (MM) ...
    • Using robust FPCA to identify outliers in functional time series, with applications to the electricity market 

      Vilar, Juan M.; Raña, Paula; Aneiros Pérez, Germán (Institut d'Estadistica de Catalunya, 2016)
      [Abstract]: This study proposes two methods for detecting outliers in functional time series. Both methods take dependence in the data into account and are based on robust functional principal component analysis. One method ...
    • Burned area prediction with semiparametric models 

      Lombardía, María José; Boubeta, Miguel; González Manteiga, Wenceslao; Marey Pérez, Manuel Francisco (CSIRO Publishing, 2016-04-27)
      [Abstract] Wildfires are one of the main causes of forest destruction, especially in Galicia (north-west Spain), where the area burned by forest fires in spring and summer is quite high. This work uses two semiparametric ...
    • Comparing conditional survival functions with missing population marks in a competing risks model 

      Bandyopadhyay, Dipankar; Jácome, M. A. (Elsevier, 2016-11-25)
      [Abstract] In studies involving nonparametric testing of the equality of two or more survival distributions, the survival curves can exhibit a wide variety of behaviors such as proportional hazards, early/late differences, ...
    • Estudio métrico sobre la actividad investigadora usando el software libre R: el caso del sistema universitario gallego 

      Tarrío-Saavedra, Javier; Orois, Elena; Naya, Salvador (Universidad Nacional Autónoma de México, 2017)
      [Resumen] Este trabajo representa una nueva alternativa para el estudio, clasificación y comparación de la producción científica de centros de investigación, utilizando las funciones de tratamiento de datos del paquete ...
    • Evaluation of Depression in Subacute Low Back Pain: A Case Control Study 

      López-López, Daniel; Vilar, Juan M.; Calvo-Lobo, César; Losa Iglesias, Marta Elena; Rodríguez Sanz, David; Becerro-de-Bengoa-Vallejo, Ricardo (American Society of Interventional Pain Physicians, 2017)
      [Abstract] Low back pain (LBP) is the most common musculoskeletal disorder affecting the general population and it is believed to be associated with depression. The study aim was to describe and compare the impact in a ...
    • Nonparametric incidence estimation and bootstrap bandwidth selection in mixture cure models 

      López-Cheda, Ana; Cao, Ricardo; Jácome, M. A.; Keilegom, Ingrid Van (Elsevier, 2017-01)
      [Abstract]: A completely nonparametric method for the estimation of mixture cure models is proposed. A nonparametric estimator of the incidence is extensively studied and a nonparametric estimator of the latency is presented. ...
    • Relationship of depression in participants with nonspecific acute or subacute low back pain and no-pain by age distribution 

      López-López, Daniel; Calvo-Lobo, César; Vilar, Juan M.; Becerro-de-Bengoa-Vallejo, Ricardo; Losa Iglesias, Marta Elena; Rodríguez Sanz, David; Palomo-López, Patricia (Dove Press, 2017-01)
      [Abstract] Background and purpose: Nonspecific low back pain (LBP) is the most prevalent musculoskeletal condition in various age ranges and is associated with depression. The aim of this study was to determine the Beck ...
    • Nonparametric latency estimation for mixture cure models 

      López-Cheda, Ana; Jácome, M. A.; Cao, Ricardo (Springer Nature, 2017-06)
      [Abstract]: A nonparametric latency estimator for mixture cure models is studied in this paper. An i.i.d. representation is obtained, the asymptotic mean squared error of the latency estimator is found, and its asymptotic ...
    • Transcultural Adaptation and Validation of the Spanish Bristol Foot Score (BFS-S) 

      López-López, Daniel; Navarro Flores, Emmanuel; Losa Iglesias, Marta Elena; Becerro-de-Bengoa-Vallejo, Ricardo; Vilar, Juan M.; Palomo-López, Patricia; Calvo-Lobo, César (Aging and Disease, 2018)
      [Abstract] The Bristol Foot Score is considered an instrument for measuring the impact of foot problems and pain. It was developed and validated in United Kingdom. Therefore, this aim was to perform the transcultural ...
    • Nonparametric geostatistical risk mapping 

      Fernández-Casal, Rubén; Castillo-Páez, Sergio; Francisco-Fernández, Mario (2018)
      In this work, a fully nonparametric geostatistical approach to estimate threshold exceeding probabilities is proposed. To estimate the large-scale variability (spatial trend) of the process, the nonparametric local linear ...
    • River flow modelling using nonparametric functional data analysis 

      Francisco-Fernández, Mario; Quintela-del-Río, Alejandro (John Wiley & Sons Ltd and The Chartered Institution of Water and Environmental Management (CIWEM), 2018)
      [Abstract]: Time series and extreme value analyses are two statistical approaches usually applied to study hydrological data. Classical techniques, such as autoregressive integrated moving-average models (in the case of ...
    • On the Use of Functional Additive Models for Electricity Demand and Price Prediction 

      Raña, Paula; Vilar, Juan M.; Aneiros Pérez, Germán (Institute of Electrical and Electronics Engineers Inc., 2018-02-12)
      [Abstract]: This paper presents an application of functional additive models in the context of electricity demand and price prediction. Data from the Spanish electricity market are used to obtain the pointwise predictions. ...
    • Functional extensions of Mandel's h and k statistics for outlier detection in interlaboratory studies 

      Flores, Miguel; Tarrío-Saavedra, Javier; Fernández-Casal, Rubén; Naya, Salvador (Elsevier B.V., 2018-05-15)
      [Abstract]: Functional data analysis (FDA) alternatives, based on the classical Mandel h and k statistics, are proposed to identify the laboratories that supply inconsistent results in interlaboratory studies (ILS). ILS ...
    • Nuevo paradigma de big data en la era de la industria 4.0 

      Naya, Salvador (Colegio Oficial de Terapeutas Ocupaciones de Galicia, 2018-05-31)
      [Resumen]:Entre los cambios de paradigma que está suponiendo la llamada cuarta revolución industrial, también llamada Industria 4.0, se encuentra que los ciudadanos tenemos que convivir en un mundo cada vez más controlado ...
    • Foot Arch Height and Quality of Life in Adults: A Strobe Observational Study 

      López-López, Daniel; Palomo-López, Patricia; Losa Iglesias, Marta Elena; Becerro-de-Bengoa-Vallejo, Ricardo; Calvo-Lobo, César; Vilar, Juan M.; Barros García, Gonzalo (MDPI, 2018-07)
      [Abstract] Background: Variations in the foot structure related with the high or low arch are identified common lower limb conditions, and it is supposed to be the effect on the quality of life (QoL) associated to foot ...
    • Molecular basis of Gender Dysphoria: androgen and estrogen receptor interaction 

      Fernández, Rosa; Guillamón, Antonio; Cortés-Cortés, Joselyn; Gómez-Gil, Esther; Jácome, M. A.; Esteva, Isabel; Almaraz, Mari Cruz; Mora, Mireia; Aranda, Gloria; Pásaro, Eduardo (Elsevier, 2018-08-27)
      [Abstract] Background: Polymorphisms in sex steroid receptors have been associated with transsexualism. However, published replication studies have yielded inconsistent findings, possibly because of a limited sample size ...
    • Automatic detection of defective crankshafts by image analysis and supervised classification 

      Remeseiro, Beatriz; Tarrío-Saavedra, Javier; Francisco-Fernández, Mario; Penedo, Manuel; Naya, Salvador; Cao, Ricardo (2019)
      [Abstract]: A crankshaft is a mechanical component of an engine that performs a conversion of an alternative movement of a piston in a rotational motion of a shaft. It is a critical part and one of the most expensive of ...