0000000001211965
AUTHOR
Antonino Fortunato
showing 26 related works from this author
Selezione del tempo di ritorno ottimale della pioggia di progetto delle reti di drenaggio urbano
2014
Statistical sampling of water uses for leakage assessment via water budget
2012
Identificazione del campione ottimale di consumi per la stima del bilancio idrico in un ATO: il caso di Siracusa
2011
Evaluating Infrastructure Alternatives for Regional Water Supply Systems by Model-assisted Cost-benefit Analysis – A Case Study from Apulia, Italy
2014
The main challenge associated to regional water supply systems planning lies in understanding the best infrastructure alternatives to improve service given a certain configuration of the resources system. While cost-effectiveness assessments are still widespread in this type of analyses, they do not account for the fact that, especially in mature systems, service improvements tend to follow the law of marginal diminishing returns, so that a cost – benefit assessment should be preferable. Both costs and benefits can be organized into a cost-benefit analysis (CBA) framework. In a complex system, a model reproducing its topology and characteristics better describes the impacts of the alternati…
Una metodologia per la selezione del tempo di ritorno ottimale della pioggia di progetto delle reti di drenaggio urbano
2016
L'obiettivo del presente lavoro è quello di definire una metodologia per l'individuazione del tempo di ritorno ottimale della pioggia di progetto dell reti di drenaggio urbano.
Evaluation of statistical sampling for the assessment of residential consumption totals in water distribution networks
2014
The paper provides insights into stratified sampling, a standard statistical technique that may be employed to assess domestic water use in water distribution networks. The basic idea is to use only a few meters to provide inference on the total water consumption of a network or of a district metered area through the knowledge of some additional stratification variables, such as household typology, size and occupants number. Since any sampling procedure assumes that the variance of the variable at stake is known, either a suitable amount of past consumption data is necessary, or a specific preliminary survey must be carried out, in order to define the sampling plan. An application with real…
SELEZIONE DELLE ALTERNATIVE DI RIABILITAZIONE IN CONDIZIONI DI SCARSITÀ DI DATI MEDIANTE INDICI DI PERFORMANCE CONCISI
2011
SELECTION OF REHABILITATION ALTERNATIVES OF WATER DISTRIBUTION SYSTEMS IN CONDITION OF LACK OF DATA BY CONCISE PERFORMANCE INDICES AND OPTIMIZATION T…
2011
Water distribution network robust design based on energy surplus index maximization
2015
The aim of this paper is to show that energy surplus indices, such as resilience index, besides providing a very good indirect measure of water distribution network reliability to be adopted during the design phase, represent also a valuable and effective indicator of the robustness of the network in alternative network scenarios, and can thus be profitably used in condition of future demands uncertainty. The methodology adopted consisted of (I) multi-objective design optimization performed in order to minimize construction costs while maximizing the resilience index; (II) retrospective performance assessment of the alternative solutions of the Pareto front obtained, under demand conditions…
Improving the resilience to drought of the Apulian water resources system – an hydroeconomic model
2015
The paper presents a hydro-economic model of the Apulian water resources system, in southern Italy, i.e. a mathematical programming model of the allocations explicitly accounting for the different values of water and for hydrological variability at the appropriate time scale. Traditionally a water-scarce region, Apulia is now supplied by extra-regional regulated surface resources as well as by a coastal aquifer; altogether, they constitute a multipurpose system with conflicting uses: municipal, irrigation and, to a lesser extent, industrial supply. The system is at present affected by high streamflow variability and by a high level of water losses along the urban distribution networks. In t…
Simulation versus Optimization in the assessment of the resource opportunity cost in complex water resources systems.
2009
Campionamento dei consumi per la valutazione delle perdite mediante l’esecuzione di bilanci idrici
2010
SCELTA DEGLI INTERVENTI DI RIABILITAZIONE DELLE RETI IDRICHE CON UNA BASE INFORMATIVA LIMITATA
2012
L’uso dei modelli matematici per la valutazione del costo delle risorse in un sistema idrico complesso
2010
SULLA DEFINIZIONE DELLE PERDITE NEI LATI DELLE RETI DI DISTRIBUZIONE PER LA SIMULAZIONE IDRAULICA NELL’AMBITO DEI MODELLI DI ASSET MANAGEMENT
2012
Selection of rehabilitation alternatives in condition of data scarcity by concise performance indices
2011
Planning Rehabilitation Actions on Water Distribution Networks in Condition of Data Scarcity
2011
The paper shows a viable approach to the selection of water networks rehabilitation actions, in condition of data scarcity and uncertainty, based on the use of four concise performance literature indices, allowing the analysis and identification of efficient, reliable and robust rehabilitation alternatives, even if assessed on the basis of a relatively small amount of data. A promising statistical sampling method of water consumptions is also described, that may be fruitfully employed within the proposed approach for drafting water balances at network district scale in order to quantify the extent of leakages. The illustrated case study shows that the selected indices are capable to describ…
Sensitivity of Regional Water Supply Systems Models to the Level of Skeletonization – A Case Study from Apulia, Italy
2015
AbstractSimulation models supported by state-of-the-art software packages are nowadays available to explore operation rules of regional water supply systems or to select structural alternatives for improving long-term service performances.Given the, sometimes high, complexity of these systems, model calibration can become a lengthy procedure and many runs are necessary before obtaining convincing results. However, even after calibration, depending on system's complexity and the number of time steps investigated, a single run can take up to several minutes, even on state-of-the-art computers, so that simulation time can become a true bottleneck if such models are to be coupled with metaheuri…
Pianificazione degli investimenti nelle reti idriche per il miglioramento dei livelli di servizio
2009
Selection of the Optimal Design Rainfall Return Period of Urban Drainage Systems
2014
Abstract The aim of this work is to define a methodology to identify the optimal rainfall return period for the design of urban drainage systems. The choice of the optimal return period is made minimizing the total costs of the system: the sewer network is dimensioned for a set of possible design rainfall return periods, and the corresponding construction, maintenance and operation costs are evaluated. For each scenario, the total expected damage from flooding caused by rainfall events with return period greater than the design one is then estimated by hydraulic simulation. This methodology has been applied to a small urban catchment in Palermo (Italy).
Sampling of Residential Water Use for Leak Control via Water Budgets
2009
Scheletrizzazione di modelli di sistemi di approvvigionamento idrico regionali – Un caso di studio
2016
In questo lavoro viene esaminata la possibilità di ridurre i tempi di calcolo, mediante la "scheletrizzazione" dei modelli, adottando come caso di studio un sistema di approvvigionamento idrico regionale reale, modellato in ambiente AQUATOR. La scheletrizzazione è stata in origine introdotta nel campo dell'ingegneria idraulica al fine di includere nei modelli idraulici delle reti solo le parti dalla rete reale che hanno un significativo impatto sul funzionamento del sistema, riducendo l'onere computazionale ma permettendo comunque di ottenere risultati accurati ed affidabili (Walski et al., 2007; Eggener & Polkowski, 1976; Shamir & Hamberg, 1988a,b). Il principio di base della scheletrizzaz…
Ottimizzazione della gestione della rete di adduzione primaria di Acquedotto Pugliese S.p.A. tramite modelli di supporto alle decisioni: l'utilizzo d…
2014
Comparison between Entropy and Resilience as Indirect Measures of Reliability in the Framework of Water Distribution Network Design
2014
Abstract The aim of this paper is to investigate which between the entropy and resilience indices represents a better indirect measure of reliability in the framework of water distribution network design. The methodology adopted consisted of (a) multi-objective optimizations performed in order to minimize costs and maximize reliability, expressed by means of one of the indirect indices at time; (b) retrospective performance assessment of the solutions of Pareto fronts obtained. Two case studies of different topological complexity were considered. Results showed that indices based on energetic concepts (resilience and modified resilience) represent a better compact estimate of reliability th…