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Browsing by Subject "Estimation"

Now showing items 1-20 of 22

Asymptotic statistical analysis for model-based control design strategies

Esparza Peidro, Alicia; Agüero, Juan C.; Rojas, Cristian R.; Godoy, Boris I. (International Federation of Automatic Control, 2011)

In this paper, we generalize existing fundamental limitations on the accuracy of the estimation of dynamic models. In addition, we study the large sample statistical behavior of different estimation-based controller design ...
Biomass allocation of Norway spruce [Picea abies (L.) Karst] trees in managed and unmanaged mixed stands

Mena Costa, Juan José (2013-04-11)

This study is aligned with the project presented by Kantor et al (2000) that is based on the monitoring of a series of 11 mixed stands of various species composition. It refers to permanent traditional thinning trial ...
Comparative study of speed estimators with highly noisymeasurement signals for Wind Energy Generation Systems

Carranza Castillo, Oscar; Figueres Amorós, Emilio; Garcerá Sanfeliú, Gabriel; González Morales, Luis Gerardo (Elsevier, 2011-03)

This paper presents a comparative study of several speed estimators to implement a sensorless speed control loop in Wind Energy Generation Systems driven by power factor correction three-phase boost rectifiers. This rectifier ...
Copigmentación de antocianos: estimación e influencia en el color de vinos tintos del cultivar Graciano

Hernández-Hierro, José Miguel; Rivas-Gonzalo, Julián; Heredia, Francisco J.; Escribano-Bailón, Maria Teresa (2013-07-01)

Una gran parte del color de los vinos tintos viene explicada por el fenómeno de la copigmentación, sobre todo cuando se trata de vinos jóvenes. Para su estimación el método más usado en la actualidad es el propuesto por ...
Estimación de la velocidad y aceleración de un servomotor a partir de las medidas de un encoder incremental

Sebastián Narváez, Alejandro (2019-11-08)

[ES] El uso de encoders en el mundo de la electrónica ha sido frecuente y útil. En este trabajo Fin de Grado hemos analizado la capacidad de dicho dispositivo electrónico para llevar a cabo la estimación de la velocidad y ...
Estimating flash flood discharge in an ungauged mountain catchment with 2D hydraulic models and dendrogeomorphic palaeostage indicators

Ballesteros Canovas, J. A.; Eguíbar Galán, Miguel Ángel; Bodoque del Pozo, José María; Díez-Herrero, A; Stoffel, M; Gutierrez-Pérez, I. (Wiley: 12 months, 2010)

There is still wide uncertainty about past flash-flood processes in mountain regions owing to the lack of systematic databases on former events. This paper presents a methodology to reconstruct peak discharge of flash ...
Estimating the number of segments for improving dialogue act labelling

Tamarit Ballester, Vicent; Martínez-Hinarejos, Carlos-D.; Benedí Ruiz, José Miguel (Cambridge University Press (CUP), 2012-01)

In dialogue systems it is important to label the dialogue turns with dialogue-related meaning. Each turn is usually divided into segments and these segments are labelled with dialogue acts (DAs). A DA is a representation ...
Estimation of a suitable Schmidt number range in diesel sprays at high injection pressure

Salvador Rubio, Francisco Javier; Ruiz Rosales, Santiago; Gimeno, Jaime; De La Morena Borja, Joaquín (Elsevier, 2011-09)

The aim of this paper is to estimate a suitable range for the Schmidt number value in non-evaporative diesel sprays. For this purpose, mass distribution data obtained from X-ray absorption experiments existing in literature ...
Estimation of shrub biomass by airborne LiDAR data in small forest stands

Estornell Cremades, Javier; Ruiz Fernández, Luis Ángel; Velázquez Martí, Borja; Fernández Sarriá, Alfonso (Elsevier, 2011-11-01)

The presence of shrub vegetation is very significant in Mediterranean ecosystems. However, the difficulty involved in shrub management and the lack of information about behavior of this vegetation means that these areas ...
Guest Editorial Special Section on Advanced Signal and Image Processing Techniques for Electric Machines and Drives Fault Diagnosis and Prognosis

Antonino-Daviu, J.; Lee, Sang Bin; Strangas, Elias (Institute of Electrical and Electronics Engineers, 2017)

[EN] With the expansion of the use of electrical drive sys- tems to more critical applications, the issue of reliability and fault mitigation and condition-based maintenance have consequently taken an increasing importance: ...
Improvement of temperature-based ANN models for solar radiation estimation through exogenous data assistance

Martí Pérez, Pau Carles; Gasque Albalate, Maria (Elsevier, 2011-02)

[EN] The development of new and more precise temperature-based models for solar radiation estimation is decisive, given the immediacy and simplicity associated to their input measurements and the ubiquitous problems derived ...
Improvements on automatic speech segmentation at the phonetic level

Gómez Adrian, Jon Ander; Calvo Lance, Marcos (Springer Verlag (Germany), 2011)

In this paper, we present some recent improvements in our automatic speech segmentation system, which only needs the speech signal and the phonetic sequence of each sentence of a corpus to be trained. It estimates a GMM ...
In-cylinder pressure based model for exhaust temperature estimation in internal combustion engines

Guardiola, Carlos; Olmeda, P.; Plá Moreno, Benjamín; Bares-Moreno, Pau (Elsevier, 2017)

[EN] Exhaust temperature is a valuable parameter for engine control. However, measurement conditions at the engine exhaust and the slow dynamic response of temperature sensors difficult the determination of the instantaneous ...
Incremental gaussian discriminant analysis based on graybill and deal weighted combination of estimators for brain tumour diagnosis

Tortajada Velert, Salvador; Fuster García, Elíes; Vicente Robledo, Javier; Wesseling, Pieter; Howe, Franklyn; Julià-Sapé, Margarida; Candiota, Ana-Paula; Monleón, Daniel; Moreno-Torres, Àngel; Pujol, Jesús; Griffiths, Jonh R.; Wright, Alan; Peet, Andrew C.; Martínez-Bisbal, M. Carmen; Celda, Bernardo; Arús, Carles; Robles Viejo, Montserrat; García Gómez, Juan Miguel (Elsevier, 2011-08)

In the last decade, machine learning (ML) techniques have been used for developing classifiers for automatic brain tumour diagnosis. However, the development of these ML models rely on a unique training set and learning ...
Interval and Possibilistic Methods for Constraint-Based Metabolic Models

Llaneras Estrada, Francisco (2011-03-23)

This thesis is devoted to the study and application of constraint-based metabolic models. The objective was to find simple ways to handle the difficulties that arise in practice due to uncertainty (knowledge is incomplete, ...
Los problemas de Fermi como actividades para introducir la modelización: qué sabemos y qué más deberíamos saber

Albarracín, Lluís (Universitat Politècnica de València, 2017-08-01)

[EN] Fermi problems have been widely used in Physics teaching at university level in the UnitedStates. Multiple recommendations for use in other educational areas can be found in theliterature, as the case ...
Maximum a Posteriori Binary Mask Estimation for Underdetermined Source Separation Using Smoothed Posteriors

Cobos Serrano, Máximo; López Monfort, José Javier (Institute of Electrical and Electronics Engineers (IEEE), 2012-09)

Sound source separation has become a topic of intensive research in the last years. The research effort has been specially relevant for the underdetermined case, where a considerable number of sparse methods working in the ...
On Simple Estimators of the alpha-mu Fading Distribution

Reig, Juan; Rubio Arjona, Lorenzo (Institute of Electrical and Electronics Engineers (IEEE), 2011-12)

In this letter, new estimators of the alpha-mu distribution are derived based on the skewness of the logarithmic alpha-mu distribution using the moments method. This distribution has been recently proposed to model the ...
Problemas de estimación de magnitudes no alcanzables: una propuesta de aula a partir de los modelos generados por los alumnos

Albarracín, Lluís; Gorgorió, Núria (Universitat Politècnica de València, 2013-06-02)

[EN] In this paper we present a proposal to introducing modeling in Secondary School classrooms. The proposal is based on the use of a set of Fermi problems related to estimating large quantities. It uses the results of a ...
Reference evapotranspiration estimation without local climatic data

Martí Pérez, Pau Carles; González Altozano, Pablo; Gasque Albalate, Maria (Springer Verlag (Germany), 2011-11)

[EN] The Penman-Monteith equation for reference evapotranspiration (ET o) estimation cannot be applied in many situations, because climatic records are totally or partially not available or reliable. In these cases, empirical ...