Search results for "stato"

le Illusioni dello stato e lo spirito della libertà

2004

Dalle interessanti e originali relazioni di autorevoli studiosi italiani e stranieri emerge come Luigi Sturzo, tramite le sue diagnosi, le sue teorie e i suoi contatti, abbia contribuito in Europa e oltreoceano allo sviluppo della democrazia, divenendone anche la ‘coscienza critica’. Della democrazia egli mise sempre in evidenza gli incalcolabili pregi, ma non indugiò mai a denunciarne i sintomi e i rischi di una degenerazione, sfociante nella partitocrazia, nello statalismo e nel malcostume.

Design and Low-Cost Implementation of an Optimally Robust Reduced-Order Rotor Flux Observer for Induction Motor Control

2007

The aim of this paper is to design and analyze reduced-order observers of the rotor flux of induction motors. The design is carried out in two steps. In the first step, a boundary of the stability region of the observation error is obtained corresponding to a chosen Lyapunov function. In the second step, the boundary is translated into a performance index that is minimized with respect to stator and rotor resistance variations and differences of voltages supplying the motor and those supplying the observer in order to obtain the largest stability region. Implementation of the observer on a low-cost fixed-point digital signal processor using look-up tables is described. Experimental results …

A nonlinear observer for rotor flux estimation considering magnetic saturation effects in induction motor drives

2015

This paper proposes a non-linear observer for In- duction Machine (IM) drives which takes into consideration the saturation effects. The non-linear observer is based on an original formulation of the dynamic model of the IM taking into consideration the magnetic saturation of the iron core. A Lyapunov based convergence analysis is proposed in order to suitably compute the observer gain guaranteeing the stability of the observer. The proposed non-linear observer has been tested in numerical simulation and experimentally on a suitably developed test set-up. Its behaviour has been compared to that obtained with a classic Full-Order Luenberger Observer (FOLO) in variable flux working conditions…

Infrastructura Naturans. Architetture di trasformazione della circonvallazione di Palermo

2022

The article discusses the theoretical system that supports design themes and processes of recycling large urban road infrastructures, referring to an international research that frames them among the sustainable regeneration processes of the contemporary city, and further evoking the project for the transformation of Palermo's ring road that has been elaborated within this research. Witnesses of past urban seasons, these infrastructures are marked by a peculiar morphology that deserves to be maintained, while they must emancipate themselves from asphalt and adapt to new urban mobilities. By hybridizing vegetation and buildings as never before, the longest roadways in our urban contexts may …

Il macrozoobenthos: uno dei possibili descrittori di stato ecologico nel monitoraggio delle aree di transizione siciliane.

2005

Salt content impacts food preferences and intake among children

2012

This work was supported by a PhD grant from the Nutrition, Chemical Food Safety and Consumer Behavior Division of INRA (French National Institute for Agronomical Research, France) and the Regional Council of Burgundy (France) received by SB; and by a research grant (Gustolf) from Regional Council of Burgundy (France) received by SN. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.; Decreasing dietary sodium intake, which can be achieved by reducing salt content in food, is recommended. Salt contributes to the taste of foods and makes them more enjoyable. Whether a food is liked or disliked is an important determina…

Peripheral, central and behavioral responses to the cuticular pheromone bouquet in Drosophila melanogaster males.

2011

International audience; Pheromonal communication is crucial with regard to mate choice in many animals including insects. Drosophila melanogaster flies produce a pheromonal bouquet with many cuticular hydrocarbons some of which diverge between the sexes and differently affect male courtship behavior. Cuticular pheromones have a relatively high weight and are thought to be -- mostly but not only -- detected by gustatory contact. However, the response of the peripheral and central gustatory systems to these substances remains poorly explored. We measured the effect induced by pheromonal cuticular mixtures on (i) the electrophysiological response of peripheral gustatory receptor neurons, (ii) …

Nerve injury in fractures of the condylar neck.

1977

Summary Although fractures of the condylar neck belong to the most frequent injuries of the jaws, and various nerves are found in close proximity to the temporomandibular joints, only little mention is made in the literature of neurological complications arising from accidents. We have therefore carried out a prospective study on nerve injuries in 237 fractures of the articular process in the period 1971–1975. We found two cases of post-traumatic Frey's syndrome, whereby the syndrome developed from a post-traumatic auriculotemporal neuralgia. We also found loss of function of auriculotemporal, buccal and facial nerves, and loss of taste sensation of the tongue in another case, caused by dam…

Atstumšana no mantojuma un mantojuma atraušana necienīgām personām

2015

Atstumšana no mantojuma un mantojuma atraušana necienīgām personām ir visai sarežģīt institūti, kuri regulēti Latvijas Civillikumā. Būtiski ir izprast šo institūtu atšķirības un vēsturisko izaugsmi laika gaitā, tāpēc tika apskatīta pieejamā literatūra par šiem jautājumiem Tika salīdzināti dažādu valstu tiesību avoti, regulējums saistībā ar konkrētajiem institūtiem. Darba mērķis ir piedāvāt labojumus, papildinājumus Latvijas Republikas Civillikumā un ieteikt likumdevējam risināt situāciju, kad institūti nav saprotami iedzīvotājiem, kuri nav apmācīti juristi. Darbā tika apskatīti iemesli šo institūtu piemērošanai dzīvē, to sekas un regulējums dažādās valstīs. Šo institūta mērķis ir līdzīgs, p…

Nonstationary heat conduction in a stator

1996

In this chapter we describe a method for computing the 3d nonstationary temperature field in the lamination pack of a stator of a synchronous or asynchronous (induction) motor with a centrifugal, meander or chamber ventilation (see [Křižek, Preiningerova]). The stator of a motor has quite a complicated geometrical form. Moreover, it consists of anisotropic materials which have very different heat conductivities, e.g., 332.8 [W/mK] for copper wires and 0.2 [W/mK] for their insulations. This causes big jumps in coefficients of the appropriate heat conduction equation, and is the main source of numerical difficulties in practical calculations.