Exploració per tema "Statistical analysis"

Ara es mostren els items 19-38 de 64

    • Empirical approach for real-time estimation of air flow rates in a subway station 

      Di Perna, Costanzo; Carbonari, Alessandro; Ansuini, Roberta; Casals Casanova, Miquel (2014-05-01)
      Article
      Accés restringit per política de l'editorial
      The EU-funded project called SEAM4US (Sustainable Energy mAnageMent for Underground Stations) is targeted to define advanced control systems for cost-effective management of subway stations, which will be applied to the pilot

    • Estimation of the modulation index of cpm signals using hos 

      Rodríguez Fonollosa, Javier; Rodríguez Fonollosa, José Adrián (Institute of Electrical and Electronics Engineers (IEEE), 1993)
      Text en actes de congrés
      Accés obert
      Three simple methods are proposed for the estimation of the modulation index of continuous phase modulated signals in noise. These methods employ the estimated autocorrelation and fourth-order cumulant sequences of the ...

    • Estimation of the uncertainty in time domain indices of RR time series 

      García González, Miguel Ángel; Fernández Chimeno, Mireya; Ramos Castro, Juan José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-03-31)
      Article
      Accés obert
      A method for estimating the uncertainty in time-domain indices of RR time series is described. The method relies on the central limit theorem that states that the distribution of a sample average of independent samples has ...

    • Feasibility analysis and performance evaluation and optimization of a DXSAHP water heater based on the thermal capacity of the system: a case study 

      De León Ruiz, Jorge E.; Carvajal Mariscal, Ignacio; Ponsich, Antonin Sebastien (2019-10-14)
      Article
      Accés obert
      The present work conducts an evaluation of the feasibility and the overall performance and consequent optimization of a direct expansion solar assisted heat pump (DXSAHP) employed for domestic water heating. For the study ...

    • Fir system identification using a linear combination of cumulants 

      Rodríguez Fonollosa, José Adrián; Vidal Manzano, José; Moreno Bilbao, M. Asunción (. IEEE INT. CONF. ON ACOUSTICS, SPEECH & SIGNAL PROC, 1992)
      Text en actes de congrés
      Accés obert
      A general linear approach to identifying the parameters of a moving average (MA) model from the statistics of the output is developed. It is shown that, under some constraints, the impulse response of the system can be ...

    • Frames: a maximum entropy statistical estimate of the inverse problem 

      Rebollo Neira, Laura; Fernández Rubio, Juan Antonio; Plastino, Angel Luís (1997-01)
      Article
      Accés obert
      A maximum entropy statistical treatment of an inverse problem concerning frame theory is presented. The problem arises from the fact that a frame is an overcomplete set of vectors that defines a mapping with no unique ...

    • Generalized equipartition theorem and confining walls 

      Rey Oriol, Rosendo (2015-06)
      Article
      Accés obert
      It is shown that the generalized equipartition theorem as applied to the momentum may fail, even though the usual conditions of validity are met. This failure is linked to the nature of the confining walls, with ideal walls ...

    • Human metastatic cholangiocarcinoma patient-derived xenografts and tumoroids for preclinical drug evaluation 

      Serra Camprubí, Queralt; Verdaguer, Helena; Oliveros, Winona; Lupión Garcia, Núria; Llop Guevara, Alba; Melé, Marta (American Association for Cancer Research, 2023)
      Article
      Accés obert
      Cholangiocarcinoma (CCA) is usually diagnosed at advanced stages, with limited therapeutic options. Preclinical models focused on unresectable metastatic CCA are necessary to develop rational treatments. Pathogenic mutations ...

    • Identification of circulating microRNA profiles associated with pulmonary function and radiologic features in survivors of SARS-CoV-2-induced ARDS 

      García Hidalgo, María C.; González, Jessica; Benítez, Iván D.; Carmona, Paola; Santisteve, Sally; Garcia Gasulla, Dario (Taylor & Francis Open Access, 2022)
      Article
      Accés obert
      ABSTRACT There is a limited understanding of the pathophysiology of postacute pulmonary sequelae in severe COVID-19. The aim of current study was to define the circulating microRNA (miRNA) profiles associated with pulmonary ...

    • Identifying hidden Zika hotspots in Pernambuco, Brazil: a spatial analysis 

      Picinini Freitas, Laís; Lowe, Rachel; Koepp, Andrew E; Valongueiro Alves, Sandra; Dondero, Molly; Marteleto, Letícia J (Oxford University Press, 2023)
      Article
      Accés obert
      Northeast Brazil has the world's highest rate of Zika-related microcephaly. However, Zika case counts cannot accurately describe burden because mandatory reporting was only established when the epidemic was declining in ...

    • Image restoration using HOS and the Radon transform 

      Sayrol Clols, Elisa; Nikias, C L; Gasull Llampallas, Antoni (IEEE IEEE PRESS, 1993)
      Text en actes de congrés
      Accés obert
      The authors propose the use of higher-order statistics (HOS) to study the problem of image restoration. They consider images degraded by linear or zero phase blurring point spread functions (PSF) and additive Gaussian ...

    • Image restoration using HOS and the Radon transform 

      Sayrol Clols, Elisa; Chrysostomos, Nikias; Gasull Llampallas, Antoni (. IEEE, 1993)
      Text en actes de congrés
      Accés obert
      The authors propose the use of higher-order statistics (HOS) to study the problem of image restoration. They consider images degraded by linear or zero phase blurring point spread functions (PSF) and additive Gaussian ...

    • Imaging and discrete modelling of sand shape 

      Rorato, Riccardo (Universitat Politècnica de Catalunya, 2019-11-08)
      Tesi
      Accés obert
      The shape of particles is known to play an important role in soil behaviour, with significant effects of engineering responses. Investigating how the shape of particles can be measured and quantified is therefore considered ...

    • Introducing semi-open learning/teaching into fundamental programming subjects 

      Xhafa Xhafa, Fatos; Marco Gómez, Jordi; Vázquez Alcocer, Pere Pau (Universitat de Barcelona. Edicions i Publicacions, 2006)
      Text en actes de congrés
      Accés obert
      Due to the development of Internet applications, semi-open learning is increasingly being introduced into traditional face-to-face learning and teaching. In several engineering degrees many subjects are developed using a ...

    • Linking shape and rotation of grains during triaxial compression of sand 

      Rorato, Riccardo; Arroyo Alvarez de Toledo, Marcos; Andò, Edward; Gens Solé, Antonio; Viggiani, Gioacchino (2020-11)
      Article
      Accés obert
      Particle shape has a strong effect on the mechanical response of coarse soils. This has been usually observed examining specimen-scale or engineering-scale responses, which are the sum of many microscale interactions. In ...

    • Mechanical optimization of concrete with recycled PET fibres based on a statistical-experimental study 

      Meza, Alejandro; Pujadas Álvarez, Pablo; Meza, Laura Montserrat; Pardo Bosch, Francesc; López Carreño, Rubén-Daniel (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-06)
      Article
      Accés obert
      Discarded polyethylene terephthalate (PET) bottles have damaged our ecosystem. Problems of marine fauna conservation and land fertility have been related to the disposal of these materials. Recycled fibre is an opportunity ...

    • Micromechanical mapping of polycrystalline cubic boron nitride composites by means of high-speed nanoindentation: Assessment of microstructural assemblage effects 

      Gordon Pozuelo, Sandra; Besharatloo, Hossein; Wheeler, Jeffrey; Rodriguez Suarez, Teresa; Roa Rovira, Joan Josep; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (Elsevier, 2022-08-28)
      Article
      Accés obert
      Polycrystalline cubic boron nitrides (PcBNs) are composites widely used as cutting tool materials due to their exceptional high hardness and wear resistance. Investigation of their micromechanical properties is key for ...

    • N-gram-based Machine Translation 

      Mariño Acebal, José Bernardo; Banchs Martínez, Rafael Enrique; Crego Clemente, Josep Maria; Gispert Brosa, Adrian de; Lambert, Patrik; Rodríguez Fonollosa, José Adrián; Ruiz Costa-Jussà, Marta (2006-12)
      Article
      Accés obert
      This article describes in detail an n-gram approach to statistical machine translation. This approach consists of a log-linear combination of a translation model based on n-grams of bilingual units, which are referred to ...

    • Novel mechanical characterization of austenite and ferrite phases within duplex stainless steel 

      Besharatloo, H.; Carpio Garza, Marcel Francisco; Cabrera Marrero, José M.; Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Wheeler, Jeffrey; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10)
      Article
      Accés obert

    • On the inverse windowed Fourier transform 

      Rebollo Neira, Laura; Fernández Rubio, Juan Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-11-30)
      Article
      Accés obert
      The inversion problem concerning the windowed Fourier transform is considered. It is shown that, out of the infinite solutions that the problem admits, the windowed Fourier transform is the "optimal" solution according to ...