Exploració per tema "Statistical analysis"

Ara es mostren els items 1-20 de 64

    • A new positive time-frequency distribution 

      Rodríguez Fonollosa, Javier; Nikias, C L (1994)
      Text en actes de congrés
      Accés obert
      This article studies the formulation of new members of the Cohen-Posch (1985) class of positive time-frequency energy distributions. Members of this class are always positive functionals and satisfy the marginal constraints. ...

    • A probabilistic approach for off-stream reservoir failure flood hazard assessment 

      Sanz Ramos, Marcos; Bladé i Castellet, Ernest; Silva Cancino, Nathalia; Salazar, Fernando; López Gómez, David; Martínez Gomariz, Eduardo (Multidisciplinary Digital Publishing Institute (MDPI), 2023-06-12)
      Article
      Accés obert
      Off-stream reservoirs are hydraulic structures that might cause severe flood damages in case of failure or improper operation. Their safety regulations usually require hydraulic studies for flood hazard and inundation zone ...

    • A radio channel emulator for WCDMA, based on the hidden Markov model (HMM) 

      Umbert Juliana, Anna; Díaz Romero, M. del Pilar (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      One of the main development and research subjects within the telecommunications area activity is the 3G mobile systems standardisation. The radio access is, of course, the main trouble in mobile systems, so it is important ...

    • A reliable statistical analysis of the best-fit distribution for High Execution Times 

      Civit, Xavier; Castillo, Joan del; Abella Ferrer, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Comunicació de congrés
      Accés obert
      Extreme Value Theory has been used to model the WCET probabilistically, relying on the assumption that probabilistic WCET (pWCET) estimates can be upper-bounded with exponential distributions, but this is only assessed on ...

    • A statistical reference criterion for adaptive filtering 

      Sala Álvarez, José; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1996)
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      A cost function for adaptive filtering is proposed, based on the statistical reference criterion. The purpose of this criterion is to enforce a given probability density function at the output of a system. The only ...

    • Analytic performance evaluation of cumulant-based arma system identification methods 

      Rodríguez Fonollosa, José Adrián; Vidal Manzano, José (IEEE IEEE PRESS, 1993)
      Text en actes de congrés
      Accés obert
      The authors perform an analytic study of some cumulant-based methods for estimating the AR parameters of ARMA processes. The analysis includes new AR identifiability results for pure AR process and the analytic performance ...

    • Analytic performance evaluation of cumulant-based fir system identification methods 

      Rodríguez Fonollosa, José Adrián; Mendel, J M (IEEE IEEE PRESS, 1992)
      Text en actes de congrés
      Accés obert
      The covariances of the third- and fourth-order sample cumulants of stationary processes are derived. The resulting expressions are used to obtain the analytical performance of such methods as a function of the coefficients ...

    • Application of low-cost sensors for accurate ambient temperature monitoring 

      Mobaraki, Behnam; Komarizadehasl, Seyedmilad; Castilla Pascual, Francisco Javier; Lozano Galant, José Antonio (2022-09)
      Article
      Accés obert
      In structures with reduced monitoring budgets, the high cost of commercial metering devices is always an obstacle for monitoring structural health. This might be an issue when temperatures must be measured for both structural ...

    • Assessment of kinetic model for ceria oxidation for chemical-looping CO2 dissociation 

      Farooqui, A.E.; Manfredi Pica, A.; Marocco, P.; Ferrero, D.; Lanzini, A.; Fiorilli, S.; Llorca Piqué, Jordi; Santarelli, Massimo (2018-08-15)
      Article
      Accés obert
      Chemical looping technologies are identified as to have an excellent potential for CO2 capture and fuels synthesis. Oxygen carriers are the fundamental component of a chemical looping process, and the choice of stable and ...

    • Assessment of mechanical properties at microstructural length scale of Ti(C,N)–FeNi ceramic-metal composites by means of massive nanoindentation and statistical analysis 

      Besharatloo, H.; Nicolás Morillas, Maria de; Roa Rovira, Joan Josep; Dios Pérez, Miguel de; Mateo García, Antonio Manuel; Ferrari, Begoña; Gordo Odériz, Elena; Llanes Pitarch, Luis Miguel (2019-01-01)
      Article
      Accés obert
      It is well known the interest of the scientific community in substituting the traditional cemented carbides (WC–Co) by alternative ceramic-metal systems. In this regard, Ti(C,N)-based cermets arise as excellent candidates ...

    • Assessment of student’s academic achievements in online and face-to-face learning in higher education 

      Hafeez, Muhammad; Ajmal, Fouzia; Zulfiqar, Zahid (OmniaScience, 2022-04)
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      Accés obert
      During the current emergency of Pandemic disease of Covid-19, the importance of online learning strategy has much increased due to closure of schools, colleges and universities in most part of the globe. To evaluate the ...

    • Carbon addition effects on microstructure and small-scale hardness for Ti(C,N)-FeNi cermets 

      Besharatloo, H.; Nicolás Morillas, Maria de; Wheeler, J.M.; Mateo García, Antonio Manuel; Ferrari, Begoña; Gordo Odériz, Elena; Llanes Pitarch, Luis Miguel; Roa Rovira, Joan Josep (2019-12-01)
      Article
      Accés obert
      The current study investigates the influence of carbon addition on the microstructural and micromechanical properties of Ti(C,N)-FeNi cermets with different ceramic/metal phase ratios. Evaluation of small-scale hardness ...

    • Characterization of phylogenetic networks with NetTest 

      Arenas, Miguel; Patricio, Mateus; Posada, David; Valiente Feruglio, Gabriel Alejandro (2010-05-20)
      Article
      Accés obert
      Background: Typical evolutionary events like recombination, hybridization or gene transfer make necessary the use of phylogenetic networks to properly depict the evolution of DNA and protein sequences. Although several ...

    • Conditional maximum likelihood frequency estimation for staggered modulations 

      Riba Sagarra, Jaume; Vázquez Grau, Gregorio (1998)
      Text en actes de congrés
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      The use of spectrally efficient continuous phase modulations for mobile communications may lead to a serious performance degradation of the classical frequency error detectors (FEDs) due to the presence of self-noise. This ...

    • Determination of environmental parameters based on Arduino based low-cost sensors 

      Mobaraki, Behnam; Komarizadehasl, Seyedmilad; Castilla Pascual, Francisco Javier; Lozano Galant, José Antonio (2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Taking into account that the age of structures is closely connected to their energy consumption, the monitoring of structures is a crucial task for engineers. This article deals with application of Arduino based low-cost ...

    • Deterministic and stochastic assessment of the harmonic currents consumed by discharge lamps 

      Mesas García, Juan José; Sainz Sapera, Luis; Ferrer Biosca, Alberto (2011-01)
      Article
      Accés restringit per política de l'editorial

    • DRAM errors in the field: a statistical approach 

      Živanovič, Darko; Esmaili Dokht, Pouya; Moré, Sergi; Bartolomé, Javier; Carpenter, Paul Matthew; Radojković, Petar; Ayguadé Parra, Eduard (Association for Computing Machinery (ACM), 2019)
      Text en actes de congrés
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      This paper summarizes our two-year study of corrected and uncor-rected errors on the MareNostrum 3 supercomputer, covering 2000 billion MB-hours of DRAM in the field. The study analyzes 4.5 million corrected and 71 uncorrected ...

    • Dynamic cluster resizing 

      González González, José; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2003)
      Text en actes de congrés
      Accés obert
      Processor resources required for an effective execution of an application vary across different sections. We propose to take advantage of clustering to turn-off resources that do not contribute to improve performance. ...

    • 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 ...