3,293 research outputs found
Le garanzie reali delle obbligazioni: la fiducia cum creditore. Un approccio comparatistico.
No full textSMA numerical modeling versus experimental results
No full textThe unique features characterizing shape memory alloys (SMAs), such as
superelasticity and shape memory effect, stimulate a deep investigation that aims
at fully understanding their behavior through experimental tests. In the present
work, we compare numerical results obtained using the phenomenological model
proposed by Auricchio and Petrini in 2004 with some experiments carried out on
SMA wires within S3T Roundrobin SMA modeling activities
Le garanzie reali delle obbligazioni: la fiducia cum creditore. Un approccio comparatistico (2025)
No full textZapruder. Rivista di storia della conflittualità sociale. Vol. 63: Romanes eunt domus
No full textIl periodo “classico” (come modello, come memoria, come fondamento identitario) affolla il nostro immaginario quotidiano. Nel numero 63 di «Zapruder» cerchiamo di cogliere il peso dell’antico nella contemporaneità, per indagare come la storia antica – il suo utilizzo, recupero, sedimento – sia parte di un gioco di specchi continuo con la contemporaneità e i conflitti che la attraversano. A partire dal campo di studi stesso: intrecciato al potere, patriarcale, eurocentrico. Per andare oltre il concetto di “classico” è infatti necessario mettere in discussione quella forma mentis che ha creato la tradizione per nutrirsene. E se il timore è che l’abbandono del canone precostituito mandi in frantumi l’intera struttura culturale e identitaria nazionale, ben venga dotarsi di nuovi strumenti, nuovi sguardi, nuove domande, per evitare di chiedersi solo: «quanto spesso pensi all’impero romano
Il latino vive, i morti siete voi
Get PDFArticolo Introduttivo al volume curato dai tre autori che indaga il peso dell’antico nella contemporaneità, per analizzare come la storia antica – il suo utilizzo, recupero, sedimento – sia parte di un gioco di specchi continuo con la contemporaneità e i conflitti che la attraversano. Per andare oltre il concetto di “classico” è infatti necessario mettere in discussione quella forma mentis che ha creato la tradizione per nutrirsene
Rozpor ako východisko, láska ako smer u Simone Weilovej (Contradiction as base, Love as direction in writings of Simone Weil)
No full textArticle is explaining contradiction and love, Simone Weil‘s essential terms of hermeneutics of human Being. It introduces close relation of these terms with her understanding of God as well as with her overall concept of religion. Author also mentions Simone Weil‘s inspirations with philosophical and spiritual concepts of the East
Theoretical and experimental study of the shape memory effect of beams in bending conditions
No full textIn this study, the shape memory effect of SMA beams under complex stress conditions is studied by means of a finite element model. The 1D version of a well-established SMA constitutive model is utilized in the numerical computations and the required parameters are obtained experimentally starting from thermal cycling tests in tension under different constant loads. After being calibrated, the model is used to compute the deformation of beams loaded in bending and undergoing thermal cycling; three-point bending and cantilever configurations are considered in this stage. Finally, the response predicted by the model is compared to experimental results and model capabilities are discussed. In particular, insight of the stress and strain evolution in bending is provided
Predictive Computational Models of Transcatheter Aortic Valve Implantation
No full textIn the last decades, biomechanical computer models have been increasingly adopted in the cardiovascular field either to improve the knowledge of pathological conditions or to anticipate possible outcomes of therapeutic interventions in specific patients. The present chapter stems from this new paradigm, also known as predictive medicine, and aims at presenting the state of the art of computer-based simulations for transcatheter aortic valve implantation (TAVI). We show how numerical analyses may be used to predict possible complications after TAVI with the aim of supporting the operation planning procedure and help heart surgeons choose the optimal strategy (i.e., that providing the best possible performance) for a given patient. Both balloon-expandable and self-expandable devices are taken into consideration and the predictive ability of computer simulations is highlighted for real clinical cases
Non-prismatic Timoshenko-like beam model: Numerical solution via isogeometric collocation
Get PDFThe present paper combines an effective beam theory with a simple and accurate numerical technique opening the door to the prediction of the structural behavior of planar beams characterized by a continuous variation of the cross-section geometry, that in general deeply influences the stress distribution and, therefore, leads to non-trivial constitutive relations. Accounting for these peculiar aspects, the beam theory is described by a mixed formulation of the problem represented by six linear Ordinary Differential Equations (ODEs) with non-constant coefficients depending on both the cross-section displacements and the internal forces. Due to the ODEs' complexity, the solution can be typically computed only numerically also for relatively simple geometries, loads, and boundary conditions; however, the use of classical numerical tools for this problem, like a (six-field) mixed finite element approach, might entail several issues (e.g., shear locking, ill-conditioned matrices, etc.). Conversely, the recently proposed isogeometric collocation method, consisting of the direct discretization of the ODEs in strong form and using the higher-continuity properties typical of spline shape functions, allows an equal order approximation of all unknown fields, without affecting the stability of the solution. This makes such an approach simple, robust, efficient, and particularly suitable for solving the system of ODEs governing the non-prismatic beam problem. Several numerical experiments confirm that the proposed mixed isogeometric collocation method is actually cost-effective and able to attain high accuracy
“I beg you to tell me what has become of Djamila”: The Political Mobilization of Simone de Beauvoir’s Readers During the Boupacha Affair
No full textBy Sophia Millman This is a condensed version of a Masters thesis dedicated to the political mobilization of Simone de Beauvoir’s readers. The citations from the letters were translated from French by the author. *** On June 2, 1960, the French government ordered all copies of the daily Algiers edition of Le Monde seized and destroyed to suppress the publication of Simone de Beauvoir’s article “Pour Djamila Boupacha.” Beauvoir, a self-professed “woman of letters”, not “of action[1]”, and one ..
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