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Статті в журналах з теми "Calibrazione e validazione"
Croveti, A., F. Sirtori, C. Aquilani, O. Franci, and R. Bozzi. "Capacità predittiva della tecnologia FT-NIRs della composizione chimica di prodotti stagionati di suino." Archivos de Zootecnia 67, Supplement (January 15, 2018): 151–54. http://dx.doi.org/10.21071/az.v67isupplement.3593.
Повний текст джерелаCollalti, A., C. Biondo, G. Buttafuoco, M. Maesano, T. Caloiero, F. Lucà, G. Pellicone, et al. "Simulation, calibration and validation protocols for the model 3D-CMCC-CNR-FEM: a case study in the Bonis’ watershed (Calabria, Italy)." Forest@ - Rivista di Selvicoltura ed Ecologia Forestale 14, no. 4 (August 31, 2017): 247–56. http://dx.doi.org/10.3832/efor2368-014.
Повний текст джерелаДисертації з теми "Calibrazione e validazione"
Parolini, Matteo. "Calibrazione e validazione di modelli per la simulazione CFD di impatto a parete di spray di combustibili." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18980/.
Повний текст джерелаDe, Tommaso Davide. "Sviluppo e validazione di un software per il controllo di un sistema automatizzato per la calibrazione di sensori inerziali." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13028/.
Повний текст джерелаBerardi, Antonella. "Validazione di un sistema basato su sensori inerziali per l'analisi cinematica della spalla." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15554/.
Повний текст джерелаMasci, Sara. "Torrente Samoggia: impatto della numerosità di dati idrometrici sulla calibrazione dei modelli idrologici." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Знайти повний текст джерелаContardi, Michele. "Validazione sperimentale del modello energetico dinamico di un edificio residenziale dotato di impianto di condizionamento polivalente e ventilazione meccanica controllata." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Знайти повний текст джерелаDe, Fabris Stefano. "Un nuovo approccio per la calibrazione dell'equazione generale del moto nella modellazione stocastica della circolazione ferroviaria." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4471.
Повний текст джерелаLa circolazione ferroviaria è interessata da una serie di fenomeni stocastici che determinano una notevole differenza tra gli orari pianificati e l’esercizio reale. Negli ultimi anni sono state proposte numerose metodologie di analisi della circolazione ferroviaria con lo scopo di individuarne le origini a livello di orario o di infrastruttura. In particolare le ricerche precedenti si sono concentrate sull’analisi delle partenze e dei tempi di fermata dei treni. Non si riscontrano invece in letteratura dei lavori focalizzati sull’intera marcia del treno e volti quindi all’individuazione della variabilità della marcia rispetto a quella calcolata con l’equazione generale del moto né sul comportamento dei treni all’interno dei grandi impianti che spesso rappresentano i punti critici delle reti. Per superare queste carenze vengono proposti due nuovi approcci per l’analisi della circolazione dei treni, rispettivamente sulle linee e nelle grandi stazioni di testa. Viene presentata una metodologia di ottimizzazione per ricavare, a partire dal tracciato gps rilevato a bordo treno, una serie di parametri di prestazione che compensino le differenze tra il profilo di velocità reale e quello teorico. Tali parametri, inseriti nell’equazione generale del moto per le diverse fasi, ne permettono quindi la calibrazione. Una volta ricavati tali parametri per un certo numero di corse, le loro distribuzioni possono essere utilizzate nell’ambito della microsimulazione stocastica o a supporto della pianificazione dell’orario. Quest’ultima possibilità è stata implementata nell’ambito di questo lavoro, sviluppando un approccio che supera i tempi deterministici convenzionalmente utilizzati introducendo tempi di percorrenza ed occupazione probabilistici. Si tiene in questo modo conto delle variabilità riscontrate nella circolazione dei treni in modo esplicito già in fase di pianificazione dell’orario ottenendo una stima realistica della stabilità della circolazione. Il secondo approccio è focalizzato sull’analisi delle dinamiche di funzionamento di una grande stazione di testa. Contrariamente da quanto affermato in ricerche precedenti, l’esperienza suggerisce l’esistenza di stazioni di grande rilevanza in cui i piazzamenti dei treni sui binari non seguono rigorosamente la pianificazione, ma subiscono delle alterazioni seguendo dinamiche probabilistiche. Tale analisi è stata condotta su Roma Termini, la più complessa stazione di testa al mondo, dimostrando una notevole variabilità nell’uso dei binari di stazione e consentendo di creare una relazione tra la variabilità dei piazzamenti ed una serie di fenomeni quali i ritardi e la densità dell’orario pianificato.
XXIII Ciclo
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BARTOLUCCI, MICHELE. "Proposta di una nuova metodologia su base fenologica per la valutazione del bilancio idrogeologico giornaliero di bacino: calibrazione e validazione del modello attraverso misure sperimentali nel medio e alto bacino del Fiume Metauro." Doctoral thesis, Urbino, 2018. http://hdl.handle.net/11576/2656912.
Повний текст джерелаMALAGO', Anna. "A systematic approach for calibrating and validating the agro-hydrological SWAT model for policy support and decision making in large European River Basins." Doctoral thesis, Università degli studi di Ferrara, 2016. http://hdl.handle.net/11392/2403465.
Повний текст джерелаThis thesis describes the research I conducted during a three-year doctoral program (2013-2015) in Engineering Science, in the branch study of Civil and Environmental Engineering. During this period, I focused on the development of a systematic modeling approach for calibrating and validating the agro-hydrological SWAT model for realistically simulating all critical hydrological and water quantity processes in large River Basins in Europe (i.e. surface runoff, lateral flow, baseflow, erosion and sedimentation, plant growth, nutrients cycle/fate/transport, denitrification and karst phenomena). This research stems from the need to provide robust and suitable model assessment for making sound management, policy and regulatory decisions. Several innovations were introduced in the modeling approach aimed both to improve model structure and calibration procedure. First of all, modifications of SWAT model were applied to produce new useful outputs for calibration and interpretation of specific processes. New algorithms for the calculation of hillslope length parameter and LS factor were also proposed and tested, as well as a new MUSLE equation. Furthermore, karst processes were represented using the KSWAT model, a combination of SWAT with a karst-flow model. Concerning the calibration/validation, a process-based approach was developed involving both hard (i.e. long time series in multiple gauging stations) and soft data (i.e. literature information of a specific process within a water, sediment, or nutrient balance that may not be directly measured within the study area, e.g. average annual estimate of denitrification) for a threefold objective: to match well the observations, to understand the processes within a basin and to provide accurate cost-benefit scenarios analysis for achieving the goals of the main European Directives. The proposed systematic modeling approach consists on different aspects: the definition of a process-based calibration and validation (C/V) strategy for quantity (streamflow and its components) and quality aspects (sediment and nutrients); detailed study for representing hydrological processes at different climate regimes and in karst dominant morphologies; validation of water balance components using a Budyko framework approach; the inter-model-comparison of outputs 2 (Benchmarking approach); the definition of a suitable model setup based on a sensitivity analysis of derived topographic attributes from different Digital Elevation Model (DEM) pixel size; the definition of cost-effective measures for the Best Management Practices (BMPs) implementation. Five SWAT model case studies were used to illustrate these topics covering approximately 55% of Europe Union. The Iberian (556,000 km2) and the Scandinavia (1,000,000 km2) Peninsulas were selected to test the C/V strategy in different climate regimes, while the Danube River Basin (800,000 km2), as well as the Upper Danube (132,000 km2), were considered as strategic largesocioeconomic-heterogeneous areas for investigating the main key topics of the procedure through water quantity and quality assessment. The Crete Island (8,400 km2) was instead selected as representative for karst phenomena assessment, as it is covered more than 40% by karst features. The analysis of these SWAT model applications has shown that the processbased C/V strategy is able to obtain good performance statistics and to gain good knowledge of each hydrological process through the analysis of temporal and spatial variations of calibrated streamflow in different large regions, characterized by heterogeneous spatial topography, land uses, soils and different climate regimes. Furthermore, the analysis of the main components of the water balance (evapotranspiration and baseflow) via Budyko framework highlighted the difficulties of SWAT model to predict correctly the baseflow in regulated mountainous basins and the dependence of the procedure on the number and spatial distribution of gauging stations and on anthropogenic water storage impact, as well as the water diversions. It was also observed that the predicted streamflow at large-scale is not affected by DEM pixel size (both with 25 m and 100 m DEM pixel size) and SWAT topographic attributes (e.g. slope and hillslope length). Conversely, the streamflow components resulted markedly affected by the change of the hillslope length parameter calculation based on DEM pixel size, highlighting the need to improve the current SWAT algorithm for a better representation of the streamflow components, as well as sediment yields via Modified Universal Soil Loss Equation (MUSLE). This equation was modified to reduce the sensitivity of sediment yields to the Hydrologic Response Units (HRUs) and slope-length factor (LS) obtaining robust simulation of sediment concentrations, yields and suitable budgets in large River Basins. Furthermore, it was demonstrated that SWAT is 3 able to reproduce the karst processes when opportunely adapted to reproduce the karst features and their intrinsic characteristics (such as fast infiltration in deep groundwater, movement of water in the karst conduits across subbasins not hydrologically connected, and the return of water as springs discharges in the rivers), thus increasing the reliability of water balance prediction in numerous river basins in Europe affected by karst water resources. As regards the water quality (sediment and nutrients), it was observed that only few watershed parameters were sensitive to calibration, increasing the difficult to represent the spatial variation of some processes in large-areas, such as the denitrification and sediment transport in the river. However, the monthly seasonal variation of total nitrogen and phosphorous concentrations were well reproduced at multi-gauging stations, given a substantial control of pollution as directly request by the European Directives (i.e. Drinking Water Directive, 98/83/EC). Furthermore, the inter-model comparisons of nutrient loads confirmed the ability of SWAT model to predict comparable nutrient loads in large–river basins, albeit the need to collect more environmental data emerged. Finally, the proposed multi-objective optimization tool for BMPs implementation in SWAT was recognized as a very useful tool in identifying efficient scenarios, related to reduction of mineral fertilization and Waste Water Treatment Plants (WWTPs) upgrading, providing significantly nutrients concentration reduction with the best cost–effectiveness. These findings can be also summarised as several useful recommendations for SWAT modellers. In conclusion, the proposed systematic approach for C/V procedure with SWAT has shown to be pedagogic and a powerful tool both for scientists, policy makers and also stakeholders, and could be extended to other hydrological and water quality models with similar structure as SWAT.
Giofrè, Vincenzo Pasquale, Vittorio Astarita, and Renato Sante Olivito. "Formulazione, calibrazione e validazione di un modello di simulazione microscopica del deflusso veicolare." Thesis, 2013. http://hdl.handle.net/10955/777.
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