Search results for "golden"

U.I.R.D.A. – Unbuilt Italian Rationalism Digital Archive

2018

For twenty years, the architecture of Italian rationalism through the digital modelling has been investigated. Very often, the production of a model and the consequent representation of tridimensional views, in many case studies, as outcome of the research on architecture have been considered. Actually, the digital model, intended as a critical tool, has to be conceived as a ‘starting point' for graphic analysis of architecture and not as the outcome. Indeed, it is associated to other graphics, sometimes not ‘deducted' from the model, useful for the understanding/translation of architecture. The construction of the model is not the construction of a simple image, operation, which is often c…

Right-jumps and pattern avoiding permutations

2015

We study the iteration of the process "a particle jumps to the right" in permutations. We prove that the set of permutations obtained in this model after a given number of iterations from the identity is a class of pattern avoiding permutations. We characterize the elements of the basis of this class and we enumerate these "forbidden minimal patterns" by giving their bivariate exponential generating function: we achieve this via a catalytic variable, the number of left-to-right maxima. We show that this generating function is a D-finite function satisfying a nice differential equation of order~2. We give some congruence properties for the coefficients of this generating function, and we sho…

Generalized Fibonacci Dynamical Systems

2009

In this paper we consider generalizations of dynamical systems that are based on the Fibonacci sequence. We first study stability properties of such systems for both the continuous and discrete–time case. Then, by considering the Kronecker operator, a further class of dynamical systems is introduced whose outputs can be used to define possible generalization of the golden section. Appli- cations of such system may range from realization of digital filters, manufacturing of tissue with fractal property, etc. Properties of sequences generated by these systems are partially considered and has to be further addressed.

Twin axial vortices generated by Fibonacci lenses.

2013

Optical vortex beams, generated by Diffractive Optical Elements (DOEs), are capable of creating optical traps and other multifunctional micromanipulators for very specific tasks in the microscopic scale. Using the Fibonacci sequence, we have discovered a new family of DOEs that inherently behave as bifocal vortex lenses, and where the ratio of the two focal distances approaches the golden mean. The disctintive optical properties of these Fibonacci vortex lenses are experimentally demonstrated. We believe that the versatility and potential scalability of these lenses may allow for new applications in micro and nanophotonics.

Retraction notice to "Isolation and confirmation of viral nervous necrosis (VNN) disease in golden grey mullet (Liza aurata) and leaping mullet (Liza…

2019

Kudoa trifolia sp. n. ? molecular phylogeny suggests a new spore morphology and unusual tissue location for a well-known genus

2006

A new species of myxozoan, Kudoa trifolia sp. n., was found in various organs of the golden grey mullet, Liza aurata (Risso), and the thinlip mullet, L. ramada (Risso), from the western Mediterranean. Spores developed in subspherical plasmodia of 0.28-1 mm diameter within connective tissue, predominantly in the spleen, the outer wall of the gall bladder and the gut, the mesenteries and occasionally also in the gills. The spores of K. trifolia differ from the commonly known shape of Kudoa by considerable enlargement of one of the four valve cells, thus forming a 'spore body', which contains the major part of the binucleate sporoplasm. Scanning electron microscopy of the spores revealed the p…

Suport System for the Management of the Sabanejewia aurata (De Filippi, 1863) Populations of the ROSCI0227 – Sighișoara-Târnava Mare

2016

Abstract ADONIS:CE was used to design a computer model for the management of Sabanejewia aurata (De Filippi, 1863) populations in the Natura 2000 site of Sighişoara-Târnava Mare (ROSCI0227). The recommended management model is based on the environmental needs of the species, inventoried according to the local habitats, as well as the indicators of conservation status and relevant management measures, and takes into account human pressures and threats identified in the research area. Such computer models were established for all protected fish species found at the site ROSCI0227.

Status of the Golden Eagle Aquila chrysaetos in Sicily

2017

In the present work, we review all the relevant information since the first Regional Atlas of breeding birds (Massa 1985), and we add field data on the species occurrence and site occupancy relative to the period January 2014-December 2016, in order to update the species’ status in Sicily.

Facio-auricle-vertebral spectrum (Goldenhar's syndrome): Clinical study of 10 pediatric patients

2002

Goldenhar's syndrome - also known as facio-auricolo-vertebral spectrum - is due to a developmental defect of cranio-facial and vertebral structures, and is interpreted as a disruption. Exogenous factors, such as gestational diabetes or ovopathies, have been involved in its aetiology. The pathogenesis of Goldenhar's syndrome seems to be vascular in most of cases, due to the interruption of blood supply to the branchial and vertebral areas during embryonic development. Ten cases of facio-auricolo-vertebral spectrum of different ages are described, in view of a better delineation of its phenotype. This report can contribute to a better knowledge of the phenotype of facio-auricolo-vertebral spe…

Some data on the transmission of the lives of saints between the Middle Ages and the modern era in the Crown of Aragon

2019

En l’edat mitjana les vides de sants eren models a seguir, exemples en els sermonaris i en els textos didacticodoctrinals. La popularitat d’aquestes vides es reflecteix en les arts plàstiques i visuals, en la literatura i en la cultura popular. A través de l’exemple de la transmissió escrita de tres vides de sants incloses en la traducció catalana de la Legenda aurea, presentem en aquest treball una aproximació a la manera en què es difonien aquelles vides, que circulaven de manera individual o integrades en compilacions i que podien oferir versions diferents en cada cas. La repercussió d’aquelles vides perviu en l’època moderna, que les recull en forma de composicions en vers, obres de tea…