1,721,141 research outputs found
La regionalizzazione delle piogge intense mediante il modello TCEV. Un'applicazione alla regione Romagna Marche
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Comparing several genetic algorithm schemes for the calibration of conceptual rainfall-runoff models
No full textThe Genetic Algorithm (GA) is often associated with local search optimisation techniques in the calibration process of Conceptual Rainfall-Runoff Models (CRRMs) (Wang, 1991; Franchini, 1996), i.e. the GA is used for approaching the region encompassing the global solution and then its results are used as a starting point for the local optimizer in the subsequent “fine-tuning” process. However, the GA can be formulated in very many ways. This study analyses various GA structures and their robustness and efficiency. In addition, a sensitivity analysis of the various schemes to their own parameters is performed. The analysis is conducted using an 11-parameter CRRM, called A Distributed Model (ADM), applied to both a theoretical case without model and data errors and two cases of the real world in which there are both model and data errors. Finally, assuming the same role as the GA for the “Pattern Search” (PS) method in a two-step optimisation technique (Hendrickson et al., 1988), the results of the two algorithms are compared, showing that, in the calibration of the ADM, the PS may give a slightly superior performance. © 1997 Taylor & Francis Group, LLC
Comparative analysis of some methods for deriving the exptected flood reduction curve in the frequency domain
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Analisi delle portate massime annuali su intervalli di assegnata durata neri corsi d'acqua delle regione Romagna-Marche
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Valutazione delle piogge estreme in Emilia Romagna e Marche
No full textin Rossi F. (editore), "La valutazione dlele Piene in Italia", GNDCI, Rapporto Nazionale di Sintesi, Dicembre 1994
Regione Romagna Marche: analisi regionale dei massimi annuali delle piogge di breve durata
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Regione Romagna Marche: analisi regionale dei masismi annuale delle piogge di breve durata
No full textin Rossi F. (editore), Previsione e Prevenzione degli eventi idrologici estremi e loro controllo. Rapporto annuale GNDCI, attività 1992-1993
Characteristics of receptors for prostaglandin F-2 alpha in bovine and equine corpora lutea.
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