17,064 research outputs found

    A conformal invariant growth model

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    We present a one-parameter extension of the raise and peel one-dimensional growth model. The model is defined in the configuration space of Dyck (RSOS) paths. Tiles from a rarefied gas hit the interface and change its shape. The adsorption rates are local but the desorption rates are non-local, they depend not only on the cluster hit by the tile but also on the total number of peaks (local maxima) belonging to all the clusters of the configuration. The domain of the parameter is determined by the condition that the rates are non-negative. In the finite-size scaling limit, the model is conformal invariant in the whole open domain. The parameter appears in the sound velocity only. At the boundary of the domain, the stationary state is an adsorbing state and conformal invariance is lost. The model allows to check the universality of nonlocal observables in the raise and peel model. An example is given.Comment: 11 pages and 8 figure

    Digital technologies for virtual recomposition : the case study of Serpotta stuccoes

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    The matter that lies beneath the smooth and shining surface of stuccoes of the Serpotta family, who used to work in Sicily from 1670 to 1730, has been thoroughly studied in previous papers, disclosing the deep, even if empirical, knowledge of materials science that guided the artists in creating their master- works. In this work the attention is focused on the solid perspective and on the scenographic sculpture by Giacomo Serpotta, who is acknowledged as the leading exponent of the School. The study deals with some particular works of the artist, the so-called "teatrini" (Toy Theater), made by him for the San Lorenzo Oratory in Palermo. On the basis of archive documents and previous analogical photogrammetric plotting, integrated with digital solutions and methodologies of computer- based technologies, the study investigates and interprets the geometric-formal genesis of the examined works of art, until the prototyping of the whole scenic apparatus.peer-reviewe

    v. 24, no. 2, October 11, 1963

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    American Myths, Legends, and Tall Tales: An Encyclopedia of American Folklore

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    Folklore has been a part of American culture for as long as humans have inhabited North America, and increasingly formed an intrinsic part of American culture as diverse peoples from Europe, Africa, Asia, and Oceania arrived. In modern times, folklore and tall tales experienced a rejuvenation with the emergence of urban legends and the growing popularity of science fiction and conspiracy theories, with mass media such as comic books, television, and films contributing to the retelling of old myths. This multi-volume encyclopedia will teach readers the central myths and legends that have formed American culture since its earliest years of settlement. Its entries provide a fascinating glimpse into the collective American imagination over the past 400 years through the stories that have shaped it. [From the Publisher]https://cupola.gettysburg.edu/books/1095/thumbnail.jp

    Kenny G, Danielle and the Curry Closet

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    Palindromes: The Rotas Prehistory

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    It was the third discovery of the rotas square that finally cast disrepute upon the third century A.D. dating of its origin. Systematic excavations of the ruins of Pompeii sponsored by the Italian government had revealed, in an open area southeast of the entangled remains of that city, a spacious palaestra or campus that had sustained some damage by tremors of Vesuvius prior to the violent eruption of 79 A.D
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