Gesture sampling for instrumental sound synthesis: violin bowing as a case study

This paper presents a framework in which samples of bowing gesture parameters are retrieved and concatenated from a database of violin performances by attending to an annotated input score. Resulting bowing parameter signals are then used to synthesize sound by means of both a digital waveguide violin physical model, and an spectral-domainadditive synthesizer.

Estudi i anàlisi dels hàbits esportius dels alumnes de l’IES Isaac Albèniz de Badalona

Aquest estudi té com objectiu conèixer els hàbits esportius dels alumnes del IES Isaac Albèniz de Badalona, no obstant els hàbits esportiu és un conjunt d’accions difícilment d’estudiar amb exactitud. Per tant l’estudi és centra principalment en conèixer el índex d’activitat física dels alumnes, el tipus d’activitat física que realitzen, els motius de pràctica i les barreres que dificulten la pràctica. La mostra analitzada és l’alumnat d’ESO que està format per 367 alumnes, 196 són nois i 171 són noies de 11 a 17 anys. El instrument de mesura utilitzat és una enquesta d’elaboració pròpia però amb referències del (MSD, 2011), aquesta enquesta s’ha administrat personalment als alumnes al principi de les classes d’educació física, posteriorment s’ha tractat les dades mitjançant el programa estadístic SPSS 20 per realitzar taules de contingència i gràfic de barres, finalment els resultats han mostrat una equivalència entre alumnes actius i no actius, que hi ha més percentatge de pràctica d’activitat física no organitzada que activitat física organitzada, que els principals motius de pràctica són la diversió i la salut, i que la falta de temps és la barrera que predomina més en els alumnes.

Statistical modeling of violin bowing parameter contours

We present a framework for modeling right-hand gestures in bowed-string instrument playing, applied to violin. Nearly non-intrusive sensing techniques allow for accurate acquisition of relevant timbre-related bowing gesture parameter cues. We model the temporal contour of bow transversal velocity, bow pressing force, and bow-bridge distance as sequences of short segments, in particular B´ezier cubic curve segments. Considering different articulations, dynamics, andcontexts, a number of note classes is defined. Gesture parameter contours of a performance database are analyzed at note-level by following a predefined grammar that dictatescharacteristics of curve segment sequences for each of the classes into consideration. Based on dynamic programming, gesture parameter contour analysis provides an optimal curve parameter vector for each note. The informationpresent in such parameter vector is enough for reconstructing original gesture parameter contours with significant fidelity. From the resulting representation vectors, weconstruct a statistical model based on Gaussian mixtures, suitable for both analysis and synthesis of bowing gesture parameter contours. We show the potential of the modelby synthesizing bowing gesture parameter contours from an annotated input score. Finally, we point out promising applicationsand developments.

Detection of Raga-characteristic phrases from Hindustani Classical Music Audio

Melodic motifs form essential building blocks in Indian Classical music. The motifs, or key phrases, providestrong cues to the identity of the underlying raga in both Hindustani and Carnatic styles of Indian music. Automatic identification and clustering of similar motifs is relevant in this context. The inherent variations in various instances of a characteristic phrase in a bandish (composition)performance make it challenging to identify similar phrases in a performance. A nyas svara (long note)marks the ending of these phrases. The proposed method does segmentation of phrases through identification ofnyas and computes similarity with the reference characteristic phrase.

Carnatic music: Svara, Gamaka, Motif and Raga identity

Over the last century in Karnatik music, the method ofunderstanding raga has been to break it down into its variouscomponents, svara, scale, gamaka, and phrases. In this paper, an attempt is made to define the abstract concept of raga in its entirety within the aesthetics of Karnatik music considering the various components and their symbiotic relationship. This paper also attempts to prove that theidentity of a raga exists as a whole. Section 2 explains theconcept of a fundamental musical note or svara. Section 3 illustrates the concept of gamaka or inflections. Section 4 delves into the concept of raga in detail and then flows into Section 5 which enunciates the identity of a raga in terms of svara, gamaka, and phraseology. The paper concludes in Section 6, and Section 7 gives the references.

La construcción de la imagen de la política en los noticiarios televisivos en España. Exo- y endo- equilibrios de la calidad de la información política

En nuestra sociedad la imagen que los ciudadanos tenemos de la política está fuertemente condicionada por cómo esta aparece en los medios de comunicación y, en particular, en los noticiarios televisivos. Este artículo, fruto de un proyecto de investigación I+D+I financiado por el Ministerio de Educación, Política Social y Deporte, analiza las noticias de temática política de ocho canales de televisión en España con el objetivo de comprobar cuál es la presencia de la política en los noticiarios, qué imagen se construye de la política en ellos. Además, propone una nueva metodología para establecer la calidad de las informaciones políticas en los noticiarios televisivos en España a través de la definición de los endo- y exo- equilibrios de los contenidos políticos de los noticiarios. Las principales conclusiones del artículo son que los noticiarios que construyen una imagen más equilibrada de la política son los de Televisión Española y Cuatro, mientras que los que construyen una imagen más desequilibrada son los de la Sexta y Canal 9. El porcentaje de noticias dedicadas a la política no depende ni de la titularidad (pública-privada), ni del ámbito de cobertura (estatal-autonómica) del canal. En cambio, sí podemos encontrar una relación en la suma de las noticias de política (political issues) y las de gobernanza (policy issues).

Web Services for Bayesian Learning

In this demonstration we present our web services to perform Bayesian learning for classification tasks.

GeoPost-it : Geo-­posicionamiento informativo para móviles

GeoPost-it es una aplicación móvil para insertar notas privadas y públicas basadas en la posición del dispositivo.

Plataforma d'aprenentatge basada en portlets, SCORM i QTI

Aquest TFC té com a objectiu principal dissenyar tot un conjunt d'eines que facilitin la creació i visualització de continguts/paquets d'aprenentatge reutilitzables, seguint els estàndards definits per IMS LD (IMS Learning Desing), incloent suport a documents SCORM i QTI per poder utilitzar-los en un entorn d'aprenentatge virtual basat en portlets.

Propuesta de ecoetiqueta para espacios de interés natural. Prueba piloto en la Vall d'Alinyà

Este artículo, presenta una propuesta de ecoetiqueta que evalúa la calidad de los espacios de interés natural. Debido a la inexistencia de una ecoetiqueta de servicios de estas características, se han estudiado antecedentes de certificados ecológicos de servicios y sistemas de evaluación de espacios naturales y urbanos. A partir de este estudio, se han evaluado 110 indicadores preexistentes, de los cuales se han adaptado 59 indicadores, 29 de cumplimiento obligatorio y 30 recomendables, divididos en tres flujos: Flujo Humano, Flujo Natural y Flujo de Gestión, y 17 vectores; con los cuales se ha elaborado un sistema de evaluación adaptado a esta ecoetiqueta. Con la determinación del reglamento y las condiciones generales para la concesión de la propuesta de ecoetiqueta, se ha realizado una Prueba Piloto en la Vall d’Alinyà (Provincia de Lérida) centrada en el Flujo Humano, verificando de forma positiva la aplicación de la certificación en este espacio. Los resultados indican una adecuación de más del 90% de los indicadores seleccionados, mientras que se ha observado, principalmente, deficiencias en los sistemas hídricos y energéticos de la Vall d’Alinyà. Por ello, se han elaborado una serie de propuestas de mejora.

Take me away : Aplicació Android per compartir transport privat i els recursos que l'engloben

Take me away és un projecte SIG orientat a desenvolupar una aplicació mòbil per a Android que permeti cercar rutes de viatge coincidents de manera geogràfica amb l'objectiu final que els usuaris es posin en contacte per tal de compartir el transport privat i els recursos que l'engloben.

The genomic distribution of intraspecific and interspecific sequence divergence of human segmental duplications relative to human/chimpanzee chromosomal rearrangements

Background: It has been suggested that chromosomal rearrangements harbor the molecular footprint of the biological phenomena which they induce, in the form, for instance, of changes in the sequence divergence rates of linked genes. So far, all the studies of these potential associations have focused on the relationship between structural changes and the rates of evolution of single-copy DNA and have tried to exclude segmental duplications (SDs). This is paradoxical, since SDs are one of the primary forces driving the evolution of structure and function in our genomes and have been linked not only with novel genes acquiring new functions, but also with overall higher DNA sequence divergence and major chromosomal rearrangements.Results: Here we take the opposite view and focus on SDs. We analyze several of the features of SDs, including the rates of intraspecific divergence between paralogous copies of human SDs and of interspecific divergence between human SDs and chimpanzee DNA. We study how divergence measures relate to chromosomal rearrangements, while considering other factors that affect evolutionary rates in single copy DNA. Conclusion: We find that interspecific SD divergence behaves similarly to divergence of single-copy DNA. In contrast, old and recent paralogous copies of SDs do present different patterns of intraspecific divergence. Also, we show that some relatively recent SDs accumulate in regions that carry inversions in sister lineages.

Molecular dating of caprines using ancient DNA sequences of Myotragus balearicus, an extinct endemic Balearic mammal

Background: Myotragus balearicus was an endemic bovid from the Balearic Islands (Western Mediterranean) that became extinct around 6,000-4,000 years ago. The Myotragus evolutionary lineage became isolated in the islands most probably at the end of the Messinian crisis, when the desiccation of the Mediterranean ended, in a geological date established at 5.35 Mya. Thus, the sequences of Myotragus could be very valuable for calibrating the mammalian mitochondrial DNA clock and, in particular, the tree of the Caprinae subfamily, to which Myotragus belongs. Results: We have retrieved the complete mitochondrial cytochrome b gene (1,143 base pairs), plus fragments of the mitochondrial 12S gene and the nuclear 28S rDNA multi-copy gene from a well preserved Myotragus subfossil bone. The best resolved phylogenetic trees, obtained with the cytochrome b gene, placed Myotragus in a position basal to the Ovis group. Using the calibration provided by the isolation of Balearic Islands, we calculated that the initial radiation of caprines can be dated at 6.2 ± 0.4 Mya. In addition, alpine and southern chamois, considered until recently the same species, split around 1.6 ± 0.3 Mya, indicating that the two chamois species have been separated much longer than previously thought. Conclusion: Since there are almost no extant endemic mammals in Mediterranean islands, the sequence of the extinct Balearic endemic Myotragus has been crucial for allowing us to use the Messinian crisis calibration point for dating the caprines phylogenetic tree.

Cab45 is required for Ca(2+)-dependent secretory cargo sorting at the trans-Golgi network

Ca(2+) import into the lumen of the trans-Golgi network (TGN) by the secretory pathway calcium ATPase1 (SPCA1) is required for the sorting of secretory cargo. How is Ca(2+) retained in the lumen of the Golgi, and what is its role in cargo sorting? We show here that a soluble, lumenal Golgi resident protein, Cab45, is required for SPCA1-dependent Ca(2+) import into the TGN; it binds secretory cargo in a Ca(2+)-dependent reaction and is required for its sorting at the TGN.

TRPM5-mediated calcium uptake regulates mucin secretion from human colon goblet cells

Mucin 5AC (MUC5AC) is secreted by goblet cells of the respiratory tract and, surprisingly, also expressed de novo in mucus secreting cancer lines. siRNA-mediated knockdown of 7343 human gene products in a human colonic cancer goblet cell line (HT29-18N2) revealed new proteins, including a Ca(2+)-activated channel TRPM5, for MUC5AC secretion. TRPM5 was required for PMA and ATP-induced secretion of MUC5AC from the post-Golgi secretory granules. Stable knockdown of TRPM5 reduced a TRPM5-like current and ATP-mediated Ca(2+) signal. ATP-induced MUC5AC secretion depended strongly on Ca(2+) influx, which was markedly reduced in TRPM5 knockdown cells. The difference in ATP-induced Ca(2+) entry between control and TRPM5 knockdown cells was abrogated in the absence of extracellular Ca(2+) and by inhibition of the Na(+)/Ca(2+) exchanger (NCX). Accordingly, MUC5AC secretion was reduced by inhibition of NCX. Thus TRPM5 activation by ATP couples TRPM5-mediated Na(+) entry to promote Ca(2+) uptake via an NCX to trigger MUC5AC secretion