Search results for "LESS"
showing 10 items of 2452 documents
Il diritto come relazione comunicativa
2012
Da un punto di vista sociologico, il diritto può essere inteso come sistema informativo ed in particolare la norma non è altro che un atto di comunicazione, cioè un messaggio, avente particolari caratteristiche di descrittività e, in senso lato, di prescrittività. Un messaggio, cioè, che appare indirizzato a orientare azioni e aspettative d’azione. In questo senso, dunque, la norma conferisce senso e significato all’azione, in senso weberiano.
Riconfigurazioni identitarie nei contesti urbani degradati: discontinuità e riflessività
2019
Che rilevanza ha il contesto territoriale nei percorsi biografici dei residenti? Che significato assumono in un determinato territorio i turning point, le discontinuità, gli eventi imprevisti che si verificano nella vita degli individui? E ancora, perché soggetti che nascono e vivono in ambienti degradati economicamente e culturalmente riescono a cambiare il corso della propria vita che sembrerebbe ripetersi con modalità abituali per altri consociati (familiari o residenti) con esiti di degrado personale o marginalità sociale? Nell’articolo, attraverso i dati di una ricerca si svilupperà la relazione che intercorre tra discontinuità biografiche e riflessività che nei turning point influenza…
A new formulation of the loop-tree duality at higher loops
2019
We present a new formulation of the loop-tree duality theorem for higher loop diagrams valid both for massless and massive cases. $l$-loop integrals are expressed as weighted sum of trees obtained from cutting $l$ internal propagators of the loop graph. In addition, the uncut propagators gain a modified $i \delta$-prescription, named dual-propagators. In this new framework one can go beyond graphs and calculate the integrand of loop amplitudes as a weighted sum of tree graphs, which form a tree-like object. These objects can be computed efficiently via recurrence relations.
A loopless algorithm for generating the permutations of a multiset
2003
AbstractMany combinatorial structures can be constructed from simpler components. For example, a permutation can be constructed from cycles, or a Motzkin word from a Dyck word and a combination. In this paper we present a constructor for combinatorial structures, called shuffle on trajectories (defined previously in a non-combinatorial context), and we show how this constructor enables us to obtain a new loopless generating algorithm for multiset permutations from similar results for simpler objects.
The effect of wavelet and discrete cosine transform compression of digital radiographs on the detection of subtle proximal caries. ROC analysis.
2007
The study compared diagnostic performances of 2 different image compression methods: JPEG (discrete cosine transform; Joint Photographic Experts Group compression standard) versus JPEG2000 (discrete wavelet transform), both at a compression ratio of 12:1, from the original uncompressed TIFF radiograph with respect to the detection of non-cavitated carious lesions. Therefore, 100 approximal surfaces of 50 tooth pairs were evaluated on the radiographs by 10 experienced observers using a 5-point confidence scale. Observations were carried out on a standardized viewing monitor under subdued light conditions. The proportion of diseased surfaces was balanced to approximately 50% to avoid bias. Tr…
A regular variational boundary model for free vibrations of magneto-electro-elastic structures
2011
In this paper a regular variational boundary element formulation for dynamic analysis of two-dimensional magneto-electro-elastic domains is presented. The method is based on a hybrid variational principle expressed in terms of generalized magneto-electro-elastic variables. The domain variables are approximated by using a superposition of weighted regular fundamental solutions of the static magneto-electro-elastic problem, whereas the boundary variables are expressed in terms of nodal values. The variational principle coupled with the proposed discretization scheme leads to the calculation of frequency-independent and symmetric generalized stiffness and mass matrices. The generalized stiffne…
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…
Il ruolo della struttura semantica e della composizione morfologica nell'accuratezza di decodifica:dislessici evolutivi e normolettori a confronto.
2008
Nello specifico, il nostro lavoro di ricerca si propone di valutare l’influenza degli indizi contestuali sull’accuratezza di decodifica (corretto posizionamento dell’accento) del dislessico evolutivo e del normolettore confrontando due principali condizioni: assenza e presenza di disponibilità contestuale. In aggiunta, nell’ottica di effettuare una specifica indagine linguistica, l’intento è anche quello di analizzare l’influenza della composizione sillabico-accentuale, sull’accuratezza di decodifica (corretto posizionamento dell’accento) dei due gruppi di soggetti (Mulatti e Job, 2003; Marcolini e Burani, 2003; Burani, Barca e Ellis, 2006; Marcolini, Donato, Stella e Burani, 2006; Barca, E…
The Hamilton–Jacobi Equation
2001
We already know that canonical transformations are useful for solving mechanical problems. We now want to look for a canonical transformation that transforms the 2N coordinates (q i , p i ) to 2N constant values (Q i , P i ), e.g., to the 2N initial values \((q_{i}^{0},p_{i}^{0})\) at time t = 0. Then the problem would be solved, q = q(q0, p0, t), p = p(q0, p0, t).
Dsdivn: A Distributed Software-Defined Networking Architecture for Infrastructure-Less Vehicular Networks
2017
International audience; In the last few years, the emerging network architecture paradigm of Software-Defined Networking (SDN), has become one of the most important technology to manage large scale networks such as Vehicular Ad-hoc Networks (VANETs). Recently, several works have shown interest in the use of SDN paradigm in VANETs. SDN brings flexibility, scalability and management facility to current VANETs. However, almost all of proposed Software-Defined VANET (SDVN) architectures are infrastructure-based. This paper will focus on how to enable SDN in infrastructure-less vehicular environments. For this aim, we propose a novel distributed SDN-based architecture for uncovered infrastructur…