Search results for "Wolf"

Disentangling canid howls across multiple species and subspecies: Structure in a complex communication channel

2016

Wolves, coyotes, and other canids are members of a diverse genus of top predators of considerable conservation and management interest. Canid howls are long-range communication signals, used both for territorial defence and group cohesion. Previous studies have shown that howls can encode individual and group identity. However, no comprehensive study has investigated the nature of variation in canid howls across the wide range of species. We analysed a database of over 2000 howls recorded from 13 different canid species and subspecies. We applied a quantitative similarity measure to compare the modulation pattern in howls from different populations, and then applied an unsupervised clusteri…

«Bella mia fiamma, addio / Resta, o cara» tra Jommelli e Mozart: osservazioni e ipotesi sull’aria K. 528

2012

Mozart wrote the scena and aria K. 528 in Prague in 1787 for the singer Josepha Duschek. As previously known, this wonderful page is based on a text taken from “Cerere placata”, a “festa teatrale” created in Naples in 1772 by the man of letters and scientist Michele Sarcone and the renowned “maestro di cappella” Niccolò Jommelli to celebrate the birth of the first daughter of king Ferdinand IV of Bourbon. The article reconstructs in detail the circumstances of the Neapolitan performance, and shows that Jommelli’s setting of Titano’s recitative and aria “Bella mia fiamma, addio” / “Resta, o cara; acerba morte” enjoyed a large success and circulated as an autonomous piece. A comparison betwee…

«Nozze» napoletane. «La serva onorata» di Giambattista Lorenzi e Nicolò Piccinni (1792)

2012

Nel 1792 il teatro napoletano dei Fiorentini ospitò la prima rappresentazione di una nuova opera comica di Giambattista Lorenzi e Niccolò Piccinni: «La serva onorata». Il libretto era in realtà una libera rielaborazione delle «Nozze di Figaro» di Da Ponte per Mozart. Il saggio avanza alcune ipotesi circa l'arrivo del testo nella capitale meridionale e procede poi a un dettagliato esame delle manipolazioni subite dal modello viennese, che risulta omologato alle convenzioni estetiche e produttive locali. Particolare attenzione viene riservata al ruolo degli interpreti napoletani, che con le proprie caratteristiche condizionano vistosamente il processo di adattamento. In chiusura vengono propo…

E' John Miller il vincitore del Wolfgang Hahn Prize Edizione 2011

2011

Gráficos interactivos y la nueva metodología docente en el EEES

2010

En este artículo mostramos la posibilidad de utilizar los gráficos interactivos disponibles en Internet para la docencia en la universidad acorde con la nueva metodología docente que implica la convergencia de España hacia el Espacio Europeo de Educación Superior. Mostramos un ejemplo concreto de utilización de esta tecnología en la enseñanza de Microeconomía en la Universidad. En particular explicaremos la noción de Equilibrio Walrasiano en el caso de una economía sencilla de intercambio simple representable en la caja de Edgeworth mediante el gráfico interactivo: Walrasian Equilibrium or Disequilibrium.

Su un caso di sindrome di Wolfram

2011

To aim of this paper was to offer a further contribution to the knowledge af the Wolfram Syndrome within the Italian population about hypotheses of its genetic trasmission and diagnostic problems.The study comprised the genetic investigation and the clinical ophthalmological examination of all the family members. Genetic investigation of family members showed the presence of a genetic disorder,consisting in a mutation of the gene wfs1, located on the short arm of chromosome 4, and which codifies for the protein Wolfranin. The gene wfs1 presents high penetrance and expression,since the mutation is recessive, it can only be clinicallly detected when it is present in the homozygous form. It sh…

Brief Review of the Effects of Pressure on Wolframite-Type Oxides

2018

In this article we review the advances that have been made on the understanding of the high-pressure structural, vibrational, and electronic properties of wolframite-type oxides since the first works in the early 1990s. Mainly tungstates, which are the best known wolframites, but also tantalates and niobates, with an isomorphic ambient-pressure wolframite structure, have been included in this review. Apart from estimating the bulk moduli of all known wolframites; the cation-oxygen bond distances and their change with pressure have been correlated with their compressibility. The composition variations of all wolframites have been employed to understand their different structural phase transi…

A Brief Review of the Effects of Pressure on Wolframite-Type Oxides

2018

In this article, we review the advances that have been made on the understanding of the high-pressure (HP) structural, vibrational, and electronic properties of wolframite-type oxides since the first works in the early 1990s. Mainly tungstates, which are the best known wolframites, but also tantalates and niobates, with an isomorphic ambient-pressure wolframite structure, have been included in this review. Apart from estimating the bulk moduli of all known wolframites, the cation–oxygen bond distances and their change with pressure have been correlated with their compressibility. The composition variations of all wolframites have been employed to understand their different structural phase …

Local atomic and electronic structure of tungsten ions in AWO4 crystals of scheelite and wolframite types

2001

Abstract X-ray absorption spectroscopy was used to study the local atomic and electronic structure of tungsten ions in polycrystalline scheelite CaWO4 and wolframite-type ZnWO4 and NiWO4. The W L1- and L3-edges X-ray absorption near edge structure (XANES) signals suggest tetrahedral coordination of tungsten ions in CaWO4 and strongly distorted octahedral coordination in ZnWO4 and NiWO4. Accurate analysis of the W L3-edge extended X-ray absorption fine structure (EXAFS) signals by the regularization procedure was performed to reconstruct the radial distribution functions within the first coordination shell around tungsten atoms in AWO4 crystals and polycrystalline WO3, which was utilized for…

Happening en la plaza del pueblo: Malpartida Fluxus Village

2021

International audience; A mediados de los setenta, el artista alemán Wolf Vostell, uno de los máximos exponentes del movimiento de vanguardia Fluxus, descubría, de la mano de su esposa extremeña, Mercedes Guardado, el pueblo cacereño de Malpartida, donde acabaría pasando largas temporada con su familia, alternándolas con estancias en Berlín, a la sazón su principal lugar de residencia. Deslumbrado por el pétreo paisaje de Los Barruecos, al que calificó de obra de arte de la naturaleza, decide fundar en 1976, el mismo año en que llegó el agua corriente al pueblo, un museo de un nuevo tipo, móvil, cambiante, que pretendía borrar las fronteras entre vida y arte, con el happening, la performanc…