2,366 research outputs found
Redazione di 17 schede in Repertorio di esempi di intervento in "Il recupero delle coperture" di B. de Sivo ed altri
No full textIl contributo si esplicita in 17 schede tecniche su interventi di recupero delle coperture nel volume "Il recupero delle coperture" di B. de Sivo G. Cito, G. Giordano, R. Iovino, per i tipi di Dario Flaccovio Editore
A Peak-Shaving-Oriented Incentive Mechanism for Smart Grids
No full textProsumers play a crucial role in smart grids, especially within local energy communities (LECs), since they can both consume and produce energy. When peer-to-peer (P2P) energy trading is available, prosumers can exchange their produced energy with each other: if done properly, this may lead to better energy self-consumption throughout the grid, resulting in reduced transmission losses, lower energy costs, and decreased wear and tear to the grid. Previous work on this topic led to a mechanism capable of obtaining several such goals, like preventing intentional energy production curtailment, disincentivizing simultaneous energy consumption that may lead to congestions, encouraging users to consume their own produced energy as much as possible, and ensuring that even if users initially create schedules with a selfish approach, they will ultimately converge upon a configuration that garners mutual agreement. However, this mechanism has not yet been analyzed from the perspective of peak shaving. Therefore, this paper aims to cover this shortcoming. Our objective in this work is to create a new mechanism that, under certain conditions, guarantees the achievement of optimal peak shaving. We will use it as a baseline to compare the existing mechanisms and understand under which conditions it leads to peak shaving. We performed simulations on a dataset from a grid in Cardiff, UK, and the results show that the existing mechanisms achieve optimal peak shaving both if the users act selfishly, and if they are allowed to form coalitions among themselves
Un esempio dall'Umbria: I progetti per Assisi. Piano di recupero dell'edificio ex ospedale da adibirsi a residenza civile
No full textRecupero e riuso ad Assis
A cooperative game-theory approach for incentive systems in local energy communities
No full textProsumers have a central role in the context of smart grids, and in particular within local energy communities (LECs), as they are capable of being both energy producers and consumers. In a scenario where peer-to-peer (P2P) energy trading is allowed, prosumers can exchange the energy they produce with other prosumers: the primary outcome of this is the improvement of energy self-consumption across the grid, which leads to decreased transmission losses, as well as lower energy costs and diminished long-term damage to the grid itself. Previous work proposed a mechanism to achieve multiple objectives for a cooperative game theory perspective for small coalitions, but its behavior for coalitions of arbitrary size remains unexplored, and it does not consider the objective of peak shaving. This paper aims to (i) design an algorithm for calculating schedules for coalitions of arbitrary size, (ii) analyze the behavior of this mechanism for large coalitions, (iii) create a new incentive mechanism by proposing new selling functions that ensure that the resulting mechanism would optimize for the objective of peak shaving when all the prosumers work together in one large coalition, and (iv) demonstrate the performance of the existing mechanism in terms of peak shaving, by comparing against the mechanism specifically optimized for this objective. Simulations conducted on data from a grid in Cardiff, UK, reveal that the existing mechanism works particularly well for the non-cooperative game, achieving results for cost reduction and self-consumption almost identical to the cooperative game, no matter the size of the coalitions. More precisely, although all mechanisms achieve optimal peak shaving for the grand coalition, the existing mechanism achieves this objective even within the framework of the selfish game, resulting in a reduction of the peak by approximately 29% compared to alternative methods. Furthermore, the mechanism is proven to optimally achieve peak shaving in both cooperative and non-cooperative cases
The play operator on the rectifiable curves in a Hilbert space
No full textThe vector play operator is the solution operator of a class of evolution variational inequalities arising in continuum mechanics. For regular data the existence of solutions is easily obtained from general results from the theory of maximal monotone operators. If the datum is assumed to be a continuous function of bounded variation, then the existence of a weak solution is usually proved by means of a time discretization procedure. In this paper we give a short proof of the existence of the play operator on the space of rectifiable curves making use of basic facts of measure theory. We also drop the separability assumptions usually made by other author
Guide al recupero e progetti architettonici
No full textIl saggio introduce il volume scritto in collaborazione con Stefano F. Musso e Marta Gnone e si riferisce, in particolare, alle tematiche progettuali e tecniche legate al recupero dell'architettura rurale, in genere, e compresa nel territorio del Parco Regionale del Beigu
Controllability of dynamical systems with Play-type hysteresis via approximation by delayed relays
Get PDFIn this paper we study the controllability problem for systems exhibiting hysteresis represented by play-type operators. To this end we first formalize and study in a functional setting the approximation of the Play operators by a finite weighted sum of delayed relay. Then we prove the controllability for the case with the Play operator, by the controllability result for the case with the weighted sum of delayed relay. Finally, we discuss potential applications of our approach to the sweeping process
A Model for the Analysis at ULS of Corroded RC Beams
No full textThe proposed model is able to consider the interaction between bending, shear and normal forces. Some experimental tests present in the literature, where the structural behaviour of reinforced concrete beams in presence of corrosion of longitudinal and transversal rebar was investigated, were used in the present study in order to validate the proposed model. The numerical results seem to be in good agreement with the experimental ones
L'intervento di recupero su strutture in c.a a vista: tecniche operative
No full textTecniche operative per recupero di strutture in c.a
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