1,721,058 research outputs found
Hydro-Morphological Analysis for Sustainable Planning: The Case Study of Matera, Italy
No full textSustainable planning is a complex process in which the urban transformation, affecting land use, determine significant changes on the morphological shape of the urban spaces that influence the quality of life of citizens, the efficiency of the infrastructure, the usability of the spaces and structure/buildings and the value of the esthetic aspects of the architectural works to be created (Kalfas et al. 2023; Romero-Lankao et al. 2018). The urban transformations also modify the physical parameters (shape, size, slope, permeability) related to the dynamics of response to climate change and control the processes of surface runoff development (Cappadonia et al. 2016, Li et al. 2018). Consequently, in case of urban transformations that are not well calibrated, the risk of urban flooding (Feng et al. 2021) become more frequent and influence the operability of urban areas (Yang et al. 2021). The proposed methodology interprets the morphology of the territory in order to balance the complicated interactions between natural precipitation events and the urban areas layout. The hydromorphic approach interprets the urban territory through its hydrological shape, defined by independent basins into which take place the surface runoff processes. (Cunha et al. 2017; Ermini et al. 2022). Through the assessment of surface runoffs, the basins approach allows to analyse the efficiency of the urban layout of the city of Matera, evaluating the risk of urban flooding and suggesting sustainable, resilient and strategic planning of the city
Studio di sintesi (Rapporto su individuazione dei siti per la realizzazione di impianti idroelettrici di limitata potenza nei tronchi montani dei fiumi Basento, Agri, Sinni)
No full textModellizzazione della sollecitazione, variabilità dell'utenza e conseguenze sui parametri che definiscono la richiesta
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Le Opere idrauliche nella storia di Matera
No full textNell’esposizione Le Opere idrauliche nella storia di Matera viene analizzato lo stato delle infrastrutture idrauliche dell’area materana nella sua evoluzione nel tempo. In tali contesti, infatti, l’uomo ha affrontato le problematiche connesse alla difesa, alla raccolta e alla conservazione delle risorse idriche realizzando opere in perfetta armonia con il contesto nel quale venivano realizzate. Nei Sassi le infrastrutture idriche hanno affiancato lo sviluppo urbano garantendo un’efficace protezione del territorio e assicurando la fruizione di sempre nuove risorse. Nel tempo buona parte delle infrastrutture storiche non sono più utilizzate e sono sostituite con più efficienti sistemi idrici, perfettamente integrati con le infrastrutture regionali e quindi capaci di fornire abbondanti risorse potabili da utilizzare per i differenti fabbisogni. Grazie allo sviluppo delle infrastrutture acquedottistiche era stato possibile utilizzare la maggior parte delle risorse localmente disponibili, decuplicando le disponibilità utilizzabili ai fini potabili, ma l’evoluzione dei fabbisogni imponeva ben maggiori quantità di risorsa, oltre che differenti standards qualitativi. Il confronto tra le situazioni originarie e quelle attuali permette di concludere che, coerentemente con l’importanza culturale assunta nel tempo dalla città di Matera, sarebbe particolarmente importante valorizzare elementi culturali che rischiano di essere irrimediabilmente persi e che potrebbero anche riacquisire importanti funzioni di protezione del territorio (regimazione delle acque di falda e superficiali) che diversamente determinano diffusi problemi (allagamenti, cedimenti, infiltrazioni) non sempre facilmente risolvibili
Resiliency Assessment Model
No full textThe paper introduces a new approach capable to estimate the overall resiliency of water distribution network regarding three
aspects namely; water flow, pressure, and water quality. The model begins by evaluating three kinds of resiliencies that is;
demand resiliency, pressure resiliency, and water quality resiliency. Then, a model is developed that aggregates all the indicators
into one index that depicts the overall resiliency for each single node. The aggregation is performed through the integration of the
analytical hierarchy process with fuzzy set approach. The methodology has been demonstrated using a real water distribution
system under normal operating conditions
Una metodologia di valutazione della performance globale di una rete di distribuzione idrica
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Choice of Reliability Indicator for Service Assessment of Water Distribution System
Full text linkPerformance assessment of WDS has been extensively reported in the research and practice literature.
The use of performance indicators (PIs) can play a key role in the process of measuring the quality of service
provided by the water utility, can simplify the comparison between different objectives, and help decision
processes involved in the planning and management phases. The use of PIs like reliability, resiliency and
vulnerability have been approved by many authors and researchers, and led to the achievement of wide
numbers of research studies in multidisciplinary scientific fields (Hashimoto et al., 1982; Fiering, 1982a;
Merabtene et al., 2002). In reality, in WDS, different kinds of failure like that related to pressure, flow and
water quality are linked with similar or same parameters. As a results, when one kind of failure occurred it
also influences the other type of failure. Therefore, consideration of holistic system performance with
regards to various aspects will make the process more complicated but decision makers will potentially gain
insights into the performance of the whole system as well as the information on the impacts of each
component and aspect on improving the overall performance. The proposed methodology is based on a
hierarchical system approach that begins by identifying two aspects namely; hydraulic and water quality
aspects, which could be divided broadly into available nodal pressure and available flow, and available free
residual chlorine concentration, respectively. Then, based on these services, three complementary reliability
estimators (index) are adopted namely; demand-reliability, pressure-reliability, and quality-reliability. To
reach the outcome of the proposed approach which is the overall reliability, analytical hierarchy process
(AHP) coupled with fuzzy theory is then developed to bring all the reliability estimators into a unique
platform and aggregate them into one index. The final model outcome is a single index that depicts the
overall reliability which resembles both the hydraulic and water quality performances, and provides a
comprehensive evaluation of the system
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