Search results for "LOCI"
showing 10 items of 1277 documents
On the sway stability improvement of car–caravan systems by articulated connections
2015
The present analysis is addressed to some promising connection arrangements between the towing vehicles and the towed trailers, where the two units are linked by four-bar isosceles trapeziums in place of the conventional pintle hitch. Two types of instability, of the divergent type or the oscillating type, may be analysed by the Routh–Hurwitz criterion or by the direct analysis of the characteristic equation. The constant term of this equation vanishes at the divergent instability threshold (zero of a real root), whereas the equation splits into two lower degree algebraic ‘sub-equations’ when the oscillating instability arises (pair of pure imaginary roots). A large field of geometrical con…
Hill's Equation in the Arm Push of Shot Put
2016
Aims: The purpose of this paper was to continue the previous study of arm rotation movement where A.V. Hill’s force-velocity relationship was transformed into a constant maximum power model consisting of three different components of power. Methodology: In the present study a new model of Hill’s equation was applied for accelerated motions. This theoretically derived model of further development of Hill’s force-velocity relationship was tested by fitting it into two arm push measurements of shot put experiments. The results of the further development of Hill’s equation for accelerated motions were compared with the mechanics of the constant power model of the previous study. Results: The an…
Large-Eddy Simulation of Turbulent Flow in an Unbaffled Stirred Tank Driven by a Rushton Turbine
2005
The turbulent flow fieldgeneratedin an unbaffledstirredtank by a Rushton turbine was computedby large-eddy simulation (LES). The Smagorinsky model was used to model the unresolved, or sub-grid, scales. A general purpose CFD code was appropriately modified in order to allow the computation of the sub-gridviscosity andto perform statistics on the computedresults. The numerical predictions were comparedwith the literature results for comparable configurations andwith experimental data obtainedusing particle image velocimetry. A very goodagreement was foundas regards both time-averagedresolv edfield s andturb ulence quantities. 2004 Elsevier Ltd. All rights reserved.
Archetipolatria e summa iconologica
2015
Simboli ed attributi intesi quali vulgata iconografica delle virtù della città di Palermo, posti a corredo del suo nume tutelare, secondo il distico strofico epigrafico del gruppo scultoreo del Marabitti, nella mitopoietica Flora Julia, assurgono, insieme ai loro significati opposti, a chiave di interpretazione ermeneutica dell'opera di Enzo Venezia. L’applicazione di attente e ricercate strutture compositive, e l'abilità (da architetto) di "architetturare" la visione e, soprattutto, la rappresentazione delle cose, genera la cura per l'insieme e per il particolare verboso e magniloquente, in grado di divenire sostanza principale e tema conduttore di ogni struttura narrativa; un registro est…
Follow-up of patients after revascularisation for peripheral arterial diseases: a consensus document from the European Society of Cardiology Working …
2019
International audience; Peripheral arterial diseases comprise different clinical presentations, from cerebrovascular disease down to lower extremity artery disease, from subclinical to disabling symptoms and events. According to clinical presentation, the patient's general condition, anatomical location and extension of lesions, revascularisation may be needed in addition to best medical treatment. The 2017 European Society of Cardiology guidelines in collaboration with the European Society for Vascular Surgery have addressed the indications for revascularisation. While most cases are amenable to either endovascular or surgical revascularisation, maintaining long-term patency is often chall…
Evolutionary sequences of rotating protoneutron stars
2004
We investigate the evolution of rigidly and differentially rotating protoneutron stars (PNSs) during the first twenty seconds of their life. We solve the equations describing stationary axisymmetric configurations in general relativity coupled to a finite temperature, relativistic equation of state, to obtain a sequence of quasi-equilibrium configurations describing the evolution of newly born neutron stars. Our estimates show that the scale of variation of the angular velocity in a PNSs is of the order of 7-10 km. We obtain the maximum rotation frequency that can be reached as the protoneutron stars deleptonizes and cools down, as well as other relevant parameters such as total angular mom…
Combining flow routing modelling and direct velocity measurement for optimal discharge estimation
2011
Abstract. A new procedure is proposed for estimating river discharge hydrographs during flood events, using only water level data measured at a gauged site, as well as 1-D shallow water modelling and sporadic maximum surface flow velocity measurements. During flood, the piezometric level is surmised constant in the vertical plane of the river section, where the top of the banks is always above the river level, and is well represented by the recorded stage hydrograph. The river is modelled along the reach directly located downstream the upstream gauged section, where discharge hydrograph is sought after. For the stability with respect to the topographic error, as well as for the simplicity o…
A window into the high velocity body (HVB) beneath Mt. Etna:a cntribution from the study of cognate xenoliths in historical lavas
2009
Ettore Spalletti. Lo "spazio per creare" come "spazio della memoria"
2019
Una riflessione sul ruolo della memoria e dei luoghi nell'arte di Ettore Spalletti. Tra gli artisti italiani contemporanei, Ettore Spalletti è senza dubbio uno dei più conosciuti e celebrati al mondo. Nato a Cappelle sul Tavo, nell’entroterra pescarese, sin dagli inizi degli anni sessanta Spalletti sperimenta con intensità un’appassionante ricerca sulla pittura tonale e sulla forma scultorea essenziale. Un’indagine che affonda le proprie radici nella tradizione pittorica italiana – con particolare riferimento a quella appenninica e rinascimentale – e che risale il tempo della storia dell’arte passando per il Minimalismo artistico contemporaneo e l’arte Concettuale.
Il procedimento di esecuzione dell'OEI e i margini nazionali di rifiuto
2018
Il lavoro esamina la procedura di esecuzione dell'ordine di indagine europeo, disciplinata nel titolo II del d.lgs. n. 108/2017. Nel compiere l'analisi si evidenzia come il nuovo strumento di acquisizione delle prove europee non abbia recepito il principio del mutuo riconoscimento nella sua dimensione "pura".