Search results for "ricerca"
showing 10 items of 641 documents
Paradigmi interpretativi e strategie cognitive per i territori del terzo millennio
2008
La ricerca di nuovi paradigmi interpretativi e l'elaborazione di innovative metodologie cognitive risponde ad un'esigenza disciplinare specifica, fondata sulla necessità che la dimensione operativa trovi il suo fondamento nella conoscenza e nell'efficacia del governo dei fenomeni in atto nelle città e nei territori. Il rapporto tra teoria e prassi, l'elaborazione di descrizioni sempre più accurate ed al contempo di “letture” parziali, il mutuare linguaggi e strumenti dai campi del sapere extradisciplinare, si rivelano tra i principali indicatori di un processo di adeguamento teorico-disciplinare in continuo aggiornamento. Alla luce di quanto finora esposto l'articolo vuole offrire alcuni am…
Le Linee guida per la valorizzazione del patrimonio Unesco. Uno studio dei siti siciliani.
2015
Il contributo fornisce un quadro articolato e approfondito dei siti che in Sicilia sono stati dichiarati Patrimonio Mondiale dell’Umanità dall’UNESCO. Nello specifico degli obiettivi di questo lavoro, ciò sarà affrontato attraverso un’attenta analisi comparativa delle politiche di tutela, di conservazione e di valorizzazione definite per ciascun sito, illustrando gli obiettivi, le strategie e le metodologie percorse per la loro implementazione. L’analisi comparativa delle politiche di sviluppo progettate per questi siti si baserà, inevitabilmente, sullo studio dei Piani di Gestione che sono stati redatti per la candidatura dei siti a Patrimonio Mondiale dell’Umanità. In sintesi, il Pia…
Distributed Consensus in Noncooperative Inventory Games
2009
This paper deals with repeated nonsymmetric congestion games in which the players cannot observe their payoffs at each stage. Examples of applications come from sharing facilities by multiple users. We show that these games present a unique Pareto optimal Nash equilibrium that dominates all other Nash equilibria and consequently it is also the social optimum among all equilibria, as it minimizes the sum of all the players’ costs. We assume that the players adopt a best response strategy. At each stage, they construct their belief concerning others probable behavior, and then, simultaneously make a decision by optimizing their payoff based on their beliefs. Within this context, we provide a …
Noncooperative dynamic games for inventory applications: A consensus approach
2008
We focus on a finite horizon noncooperative dynamic game where the stage cost of a single player associated to a decision is a monotonically nonincreasing function of the total number of players making the same decision. For the single-stage version of the game, we characterize Nash equilibria and derive a consensus protocol that makes the players converge to the unique Pareto optimal Nash equilibrium. Such an equilibrium guarantees the interests of the players and is also social optimal in the set of Nash equilibria. For the multi-stage version of the game, we present an algorithm that converges to Nash equilibria, unfortunately not necessarily Pareto optimal. The algorithm returns a seque…
Mean Field Linear Quadratic Games with Set Up Costs
2013
This paper studies linear quadratic games with set up costs monotonic on the number of active players, namely, players whose action is non-null. Such games arise naturally in joint replenishment inventory systems. Building upon a preliminary analysis of the properties of the best response strategies and Nash equilibria for the given game, the main contribution is the study of the same game under large population. We also analyze the influence of an additional disturbance in the spirit of the literature on H∞ control. Numerical illustrations are provided. © 2012 Springer Science+Business Media New York.
Fuzzy Multi-Criteria Decision Making: An entropy-based approach to assess tourism sustainability
2019
In this article, we propose a method for ranking tourist destinations and evaluating their performances under a sustainability perspective: a fuzzy multiple criteria decision-making method is applied for determining sustainability performance values and ranking destinations accordingly. We select a set of sustainability evaluation criteria and use a fuzzy analytic hierarchy process to weight the selected criteria. We also optimize each evaluator’s membership function support by means of a fuzzy entropy maximization criteria. A case study is illustrated and results are compared with two data envelopment analysis–based models. The simplicity of the proposed approach along with the easy reada…
A fuzzy evaluation of tourism sustainability
2019
For many years the sustainability assessment of tourist destinations has been based on the carrying capacity, which is a measure that takes into account the preservation of a geographical area (by measuring the number of tourists, the visitor flow and the environmental thresholds) along with its tourist fruition (by assessing the quality of the experience perceived by visitors). Unfortunately, its definition lacks clarity, and its dependence upon qualitative variables makes it unable to provide a unique criterion for its assessment. In this paper we propose a fuzzy approach that takes into account the inherent uncertainty and vagueness of the involved variables to assess a destination’s sus…
Risk exposure to vibration and noise in the use of agricultural track-laying tractors.
2016
Human exposure to mechanical vibration may represent a significant risk factor for exposed workers in the agricultural sector. Also, noise in agriculture is one of the risk factors to be taken into account in the evaluation of workers’ health and safety. One of the major sources of discomfort for the workers operating a tractors is the noise to which they are exposed during work. The aim of this study was to evaluate the risk of exposure to whole-body vibration for the operator driving track-laying tractors in vineyard orchard and the noise level. The experimental tests were performed with six different track-laying tractors coupled with the same rototilling machine. The results showed that…
The Multi-period Multi-trip Container Drayage Problem with Release and Due Dates
2021
Abstract The Container Drayage Problem (CDP) aims at routing a fleet of trucks, based at a common terminal, to serve customers while minimizing the total travel distance. Each trip starts from and ends at the terminal, and handles a subset of customers. Each customer requires either that a container is picked up or delivered. We introduce a more realistic variant, i.e., the Multi-trip Multi-period CDP with Release and Due Dates (MM-CDP-RDD), in which the planning horizon is composed of several periods (days). On each day, each truck may perform more than one trip respecting the Release and Due Dates (RDD) associated with customer services, corresponding to the first and the last day on whic…
Creando Pensamus: la ricerca scientifica come agente di futuro
2018
L’Università aperta. Penso, e lavoro per realizzarla, ad una Università aperta, radicata nel territorio ed embricata con la comunità. Una Università che educhi al pensiero libero e che formi persone insieme a professionisti. Una Università che sia un’agenzia di sviluppo, capace di ascoltare e di rispondere, agendo come un trasformatore delle risorse e delle opportunità in azioni concrete. Come docenti, ricercatori e progettisti nel campo urbanistico le sfide della metamorfosi verso una compiuta società della conoscenza, della circolarità e dell’innovazione ci impongono la responsabilità di re-immaginare l’Università, la sua ricerca e le sue relazioni con il territorio per formare studiosi e…