Search results for " MC"
showing 10 items of 127 documents
Metodologie di Analisi energetica e Studio di fattibilità di un impianto di produzione combinata di caldo, freddo ed energia elettrica con Sistemi MC…
2004
Particle Group Metropolis Methods for Tracking the Leaf Area Index
2020
Monte Carlo (MC) algorithms are widely used for Bayesian inference in statistics, signal processing, and machine learning. In this work, we introduce an Markov Chain Monte Carlo (MCMC) technique driven by a particle filter. The resulting scheme is a generalization of the so-called Particle Metropolis-Hastings (PMH) method, where a suitable Markov chain of sets of weighted samples is generated. We also introduce a marginal version for the goal of jointly inferring dynamic and static variables. The proposed algorithms outperform the corresponding standard PMH schemes, as shown by numerical experiments.
Missense and nonsense mutations in melanocortin 1 receptor (MC1R) gene of different goat breeds: association with red and black coat colour phenotype…
2009
Abstract Background Agouti and Extension loci control the relative amount of eumelanin and pheomelanin production in melanocytes that, in turn, affects pigmentation of skin and hair. The Extension locus encodes the melanocortin 1 receptor (MC1R) whose permanent activation, caused by functional mutations, results in black coat colour, whereas other inactivating mutations cause red coat colour in different mammals. Results The whole coding region of the MC1R gene was sequenced in goats of six different breeds showing different coat colours (Girgentana, white cream with usually small red spots in the face; Maltese, white with black cheeks and ears; Derivata di Siria, solid red; Murciano-Granad…
MCM-41 silica effect on gel polymer electrolytes based on thermoplastic polyurethane
2012
Abstract Polymer electrolytes were prepared from thermoplastic polyurethane with addition of mixture of N-ethyl(methylether)-N-methylpyrrolidinium trifluoromethanesulfonimide (PYRA12O1TFSI) ionic liquid, lithium bis(trifluoromethanesulfoneimide) salt and propylene carbonate. MCM-41 mesoporous silica was added in proportions ranging from 5 to 20 wt.% with respect to TPU. The electrolytes were characterized by thermogravimetric analysis, differential scanning calorimetry, linear voltammetry and impedance spectroscopy. The MCM-41 addition to the system was found to improve the electrochemical stability of the membranes and to reduce the gel electrolyte/metallic Li interfacial resistance. The f…
(Supplementary Table 1) 230Th/U results for stalagmite Cuba Grande (CG) from Pinar del Rio
2010
We present 22 U-series ages for a stalagmite from north-western Cuba based on multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) and thermal ionisation mass spectrometry (TIMS). Our results reveal that the stalagmite continuously grew within the last ~1400a. Low uranium content of the sample and thus, extremely low 230Th concentrations limit the precision and accuracy of 230Th/U-dating by TIMS. Samples measured by MC-ICPMS show a high variability of 232Th content along the growth axis with some sections significantly affected by initial 230Th from a detrital phase. An a-priori bulk earth ratio for (238U/232Th) cannot be used to accurately account for this initial 230Th.…
A first return examination of vector valued integrals.
2009
We prove that for each Bochner integrable function f there exists a trajectory yielding the Bochner integral of f, and that on infinite dimensional Banach spaces there exist Pettis integrable functions f such that no trajectory yields the Pettis integral of f.
Utilidad de los criterios clínicos para el adecuado diagnóstico de la faringoamigdalitis en la urgencia pediátrica
2019
Fundamentos: Existen dos escalas (Centor y McIsaac) que describen los signos y síntomas frecuentes en la faringoamigdalitis y que determinan la actitud a seguir para su diagnóstico y tratamiento; entre ellas, los criterios de McIsaac son una de las escalas más empleadas. El objetivo del estudio fue determinar el valor predictivo de los criterios de McIsaac en el diagnóstico de la faringoamigdalitis por estreptococo betahemolítico grupo A (EbhGA). El valor predictivo de estos criterios es determinante en la adecuada utilización de la prueba TDR y tratamiento antibiótico. Métodos: Se realizó un estudio transversal cuya población objeto fueron pacientes entre 0 y 14 años atendidos en el Servic…
La fraseologia com a tret estilístic en novel·les originals en anglés i les seues traduccions al català
2018
This paper is an analysis of the stylistic function of phraseology in three contemporary novels, originally written in English —Enduring Love, by Ian McEwan; The Road, by Cormac McCarthy; and Midnight’s Children, by Salman Rushdie—, and their corresponding translations into Catalan —Amor perdurable, La carretera and Els fills de la mitjanit. Taking into account some theoretical reflections on phraseology and translation, and by comparing the original novels and their translations, in this article we analyze some examples of phraseological units (PUs) that play a significant stylistic role and we also examine the techniques used by professional translators when faced with this sort of PUs. E…
Mejoras en la Generación de Claves Gravito-inerciales en Simuladores de Vehículos no Aéreos
2014
El objetivo fundamental de la realidad virtual (RV) es proporcionar al usuario una sensación completa de pertenencia a un entorno virtual alternativo. Para ello, cualquier aplicación de RV debe estimular, del modo más eficaz posible, todas (o el mayor número de) las claves sensoriales que hacen posible que el usuario sienta como cierta esa pertenencia al mundo virtual alternativo. Aunque existen muchas claves sensoriales y la aportación concreta de cada una de ellas a la percepción global de inmersión y presencia virtual es todavía parcialmente desconocida, la mayoría de aplicaciones de RV suelen centrarse en las claves visuales y sonoras, olvidando, hasta cierto punto, el resto. Las razone…
Variable selection with unbiased estimation: the CDF penalty
2022
We propose a new SCAD-type penalty in general regression models. The new penalty can be considered a competitor of the LASSO, SCAD or MCP penalties, as it guarantees sparse variable selection, i.e., null regression coefficient estimates, while attenuating bias for the non-null estimates. In this work, the method is discussed, and some comparisons are presented.