Search results for " BEM"
showing 10 items of 39 documents
Tappe e testimonianze nella vicenda trentennale di ALEA. Cenni storici e opinioni su un'associazione fra Cafoscarini
2015
In considerazione dei trent’anni dalla fondazione di ALEA, il presente contributo vuole essere occasione per ricostruire l’evoluzione storica di questa realtà. Il breve contributo è incentrato soprattutto sulla ricostruzione delle vicende e delle motivazioni che hanno visto nascere e fiorire l'associazione dei laureati in economia aziendale, intesa come bordo di coltura per le più attuali esperienze di associazionismo fra Cafoscarini. Tale tentativo si riconnette metodologicamente al saggio della sezione terza del presente volume, poiché discende dal medesimo lavoro di ricerca, soffermandosi sulle fonti capaci di illuminare il percorso di ALEA. Nello specifico, affianco ai materiali prodott…
30+ anni di aziendalisti in Laguna. Gli studi manageriali a Venezia
2015
La ricorrenza del trentennale di ALEA, la storica associazione dei laureati in economia aziendale di Ca’ Foscari, apre a una riflessione corale sullo sviluppo degli studi manageriali a Venezia. Primo in Italia assieme alla Bocconi, il corso di laurea in economia aziendale dell’Ateneo veneziano ha formato generazioni di manager, imprenditori e specialisti di caratura internazionale. Scritto assieme a diversi docenti e laureati eccellenti che hanno animato Ca’ Bembo, sede storica del dipartimento, il presente volume indaga l’evoluzione delle discipline aziendali in Laguna, oltre a restituire significative esperienze dei professionisti del management usciti da Ca’ Foscari.
Clinical evaluation of bempedoic acid for the treatment of hyperlipidaemia.
2021
Bempedoic acid (BA) is a novel first-in-class oral lipid-lowering therapy. BA has been approved by the European Medicinal Agency and Food and Drug Administration and has been commercialised throughout Europe since the end of 2020 as an add-on therapy in patients at high/very-high cardiovascular risk that are not at LDL-C goals with current lipid-lowering treatments. Recently, Italian lipid management experts gathered to discuss several open questions on BA characteristics and BArelated practical clinical issues. The panel permitted collection of its opinions in a ten Q&A format. Aim: The aim of this viewpoint is to discuss and answer several open questions on BA characteristics and BA-r…
Hierarchical adaptive cross approximation GMRES technique for solution of acoustic problems using the boundary element method
2009
In this paper a new Rapid Acoustic Boundary Element Method (RABEM) is presented using a Hierarchical GMRES solver for 3D acoustic problems. The Adaptive Cross Approximation is used to generate both the system matrix and the right hand side vector. The ACA is also used to evaluate the potential and the particle velocity values at selected internal points. Two different GMRES solution strategies (without preconditioner and with a block diagonal preconditioner) are developed and tested for low and high frequency problems. Implementation of different boundary conditions (i.e. Dirichlet, Neumann and mixed Robin) is also described. The applications presented include the problem of noise acting on…
Hierarchical-ACA DBEM for Anisotropic Three-Dimensional Time-Harmonic Fracture Mechanics
2012
A hierarchical BEM solver for the analysis of three-dimensional anisotropic time-harmonic fracture mechanics problems is presented. A thorough investigation on the relations and interactions between the numerically computed anisotropic fundamental solutions and the algorithm used to approximate the blocks of the hierarchical matrix, namely Adaptive Cross Approximation, is carried out leading to the employed computational strategy. The use of the hierarchical matrices and iterative solvers is proved as an effective technique for speeding up the solution procedure and reducing the required memory storage in time-harmonic three-dimensional anisotropic fracture mechanics problems.
Poetiche della musica nell'antichità e nel rinascimento
2008
Tramite Aristosseno, Dionigi d'Alicarnasso e Pietro Bembo la poestica dell'antica musica ellenica del V secolo a.C. viene trasmessa ai compositori del madrigale polifonico italiano del Rinascimento.
Słowo Boże w liturgii eucharystycznej Kościołów syryjskich
2017
In all liturgical families, including the Syriac ones, the proclamation of the Word of God is an essential element of liturgical celebration. Although in the numerous communities sharing the same tradition of Antioch, Edessa and Nisibis the practice of reading from the Bible during the liturgy looks different there are some common elements. They include: a great respect for the Bible (the book seen as a monstrance), the readings taking place during the Liturgy of Catechumens; the division of readings from both the Old and New Testament into the psalmodic chants, the practice of reading the Gospel which is reserved strictly for the priest, the presence of the biblical poetry during the whole…
A fast BEM for the analysis of damaged structures with bonded piezoelectric sensors
2010
A fast boundary element method for the analysis of three-dimensional solids with cracks and adhesively bonded piezoelectric patches, used as strain sensors, is presented. The piezoelectric sensors, as well as the adhesive layer, are modeled using a 3D state-space finite element approach. The piezoelectric patch model is formulated taking into account the full electro-mechanical coupling and embodying the suitable boundary conditions and it is eventually expressed in terms of the interface variables, to allow a straightforward coupling with the underlying host structure, which is modeled through a 3D dual boundary element method, for accurate analysis of cracks. The technique is computationa…
On the accuracy of the fast hierarchical DBEM for the analysis of static and dynamic crack problems
2010
In this paper the main features of a fast dual boundary element method based on the use of hierarchical matrices and iterative solvers are described and its effectiveness for fracture mechanics problems, both in the static and dynamic case, is demonstrated. The fast solver is built by representing the collocation matrix in hierarchical format and by using a preconditioned GMRES for the solution of the algebraic system. The preconditioner is computed in hierarchical format by LU decomposition of a coarse hierarchical representation of the collocation matrix. The method is applied to elastostatic problems and to elastodynamic cases represented in the Laplace transform domain. The application …
The symmetric boundary element method for unilateral contact problems
2008
Abstract On the basis of the boundary integral equation method, in its symmetric formulation, the frictionless unilateral contact between two elastic bodies has been studied. A boundary discretization by boundary elements leads to an algebraic formulation in the form of a linear complementarity problem. In this paper the process of contact or detachment is obtained through a step by step analysis by using generalized (weighted) quantities as the check elements: the detachment or the contact phenomenon may happen when the weighted traction or the weighted displacement is greater than the weighted cohesion or weighted minimum reference gap, respectively. The applications are performed by usin…