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DTSTART;TZID=Europe/Rome:20240109T171500
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DTSTAMP:20260508T153627
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UID:31579-1704820500-1704825000@www.dica.polimi.it
SUMMARY:PhDTalks | Integrating Probabilistic Hydrogeological Reconstruction and Groundwater Flow Modeling for the Po Plain Aquifer System: A Data-Driven Approach Supporting Physics-Based Modeling
DESCRIPTION:Il prossimo appuntamento con la serie di incontri PhDTalks si terrà Martedì 9 gennaio nell’aula Fassò (Edificio 4A)\, dalle 17:15 alle 18:30 CET. \nPhDTalks è una serie di seminari e discussioni tra dottorandi. Gli eventi hanno lo scopo di fornire un luogo dove creare un network tra dottorandi ed entrare in contatto con i molti progetti sviluppati nel nostro dipartimento. \nLo speaker Andrea Manzoni condurrà un seminario dal titolo “Integrating Probabilistic Hydrogeological Reconstruction and Groundwater Flow Modeling for the Po Plain Aquifer System: A Data-Driven Approach Supporting Physics-Based Modeling”.  \nAl termine dell’evento sarà disponibile un piccolo rinfresco finanziato dal dipartimento. \nSarà possibile seguire la conferenza anche online al seguente link. \nAbstract \nI present a study related to the modeling of large-scale groundwater flow and contaminant transport in porous media. The techniques presented are designed to efficiently handle a large volume of data by combining knowledge of system physics with the increasingly availability of innovative artificial intelligence techniques. The study is divided into three main phases. \nIn the first phase\, a probabilistic hydrogeological reconstruction is carried out on a large-scale system\, specifically for the Po River basin in Italy. This reconstruction is accomplished using artificial intelligence techniques that have been appropriately adapted to realize the hydrogeological reconstruction and quantify its associated uncertainty. These findings serve as input for the second phase of the study\, which focuses on developing a flow model. To achieve this\, we have developed a methodology for calibration and sensitivity analysis of large-scale groundwater flow models. This methodology includes the application of state-of-the-art optimization algorithms and posterior sensitivity analysis\, which provide information on the sensitivity of the model output (hydraulic load) to variations in parameter values after the calibration phase. The case study for this methodology is the Po River basin\, for which a groundwater flow model has been developed based on available measurements in the region\, including hydraulic head measurements\, satellite precipitation data\, temperature\, land use\, and continental-scale models of soil properties and crops. \nFinally\, the third phase focuses on the development of a deep learning-based methodology aimed at identifying preferential pathways for contaminants in porous media and utilizing the information within these pathways to determine the arrival time of the first quantity of contaminant in a region of interest. This methodology serves as a foundation for the development of artificial intelligence-based methodologies for identifying pathways and travel times of contaminants within aquifers in highly complex systems\, as the system analyzed in the first two phases of this study. \nSpeaker’s bio \nAndrea Manzoni is a Ph.D. candidate in Environmental and Infrastructure Engineering at Politecnico di Milano\, with a Master of Science in Energy Engineering\, specializing in oil and gas production from the same institution. \nHis research covers a diverse range of topics. This includes complex models\, groundwater flow\, contaminant transport\, large-scale models\, stochastic inverse modeling\,  sensitivity analysis\,  multiphase flow\, data mining\, remote sensing and on-site data analysis\, applied machine learning\, and computer vision. \nHis Ph.D. thesis focuses on developing a stochastic inverse modeling technique for a large-scale groundwater flow model applied to the groundwater system of the Po River watershed\, as well as a deep learning technique for contaminant transport through porous media. \nIn 2023\, Andrea Manzoni further enriched his expertise as a Visiting Scholar for 5 months at the University of Southern California (Los Angeles\, US). During this time\, he focused on contaminant transport\, the cutting-edge applications of artificial intelligence techniques in computer vision and image processing\, and uncertainty quantification applied to machine learning models. \nIn addition\, Andrea Manzoni has held the position of Vice-President of the Society of Petroleum Engineers (SPE) Student Chapter at Politecnico di Milano since 2021.
URL:https://www.dica.polimi.it/it/evento/phdtalks-integrating-probabilistic-hydrogeological-reconstruction-and-groundwater-flow-modeling-for-the-po-plain-aquifer-system-a-data-driven-approach-supporting-physics-based-modeling/
CATEGORIES:PHD Life,Seminari e conferenze
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DTSTART;TZID=Europe/Rome:20240123T171500
DTEND;TZID=Europe/Rome:20240123T183000
DTSTAMP:20260508T153627
CREATED:20240115T151337Z
LAST-MODIFIED:20240115T151337Z
UID:31580-1706030100-1706034600@www.dica.polimi.it
SUMMARY:PhDTalks | Metamaterials and topological mechanics for elastic wave control
DESCRIPTION:Il prossimo appuntamento con la serie di incontri PhDTalks si terrà Martedì 23 gennaio nell’aula Fassò (Edificio 4A)\, dalle 17:15 alle 18:30 CET. \nPhDTalks è una serie di seminari e discussioni tra dottorandi. Gli eventi hanno lo scopo di fornire un luogo dove creare un network tra dottorandi ed entrare in contatto con i molti progetti sviluppati nel nostro dipartimento. \nLo speaker Luca Iorio condurrà un seminario dal titolo “Metamaterials and topological mechanics for elastic wave control”.  \nAl termine dell’evento sarà disponibile un piccolo rinfresco finanziato dal dipartimento. \nSarà possibile seguire la conferenza anche online al seguente link. \nAbstract \nMetamaterials and architected materials are engineered materials with static and dynamic properties beyond (“meta”) those of their individual ingredients.\nTheir role in elastic and acoustic wave manipulation and stress localization has been shown in the last years\, yielding novel results for signal amplification\, energy harvesting and mode conversion.\nIn this talk\, the main results of our research group in the field of elastic wave control through localization\, mode conversion and energy harvesting will be presented. The various techniques used to achieve these kinds of extreme manipulations will be shown.\nThe presentation will conclude on novel and intriguing energy localization phenomena observed in topologically polarized soft structural lattices. \nSpeaker’s bio \nLuca Iorio is a PhD candidate in structural\, seismic and geotechnical engineering (37th cycle) at Politecnico di Milano. Luca has a bachelor’s and master’s degree in materials and nanotechnology engineering. He is currently working on metamaterials for energy harvesting for the European 2020 project Metaveh and more specifically on the study and development of metamaterials for elastic energy localization\, mode conversion and topological mechanics.
URL:https://www.dica.polimi.it/it/evento/phdtalks-metamaterials-and-topological-mechanics-for-elastic-wave-control/
CATEGORIES:PHD Life,Seminari e conferenze
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DTSTART;TZID=Europe/Rome:20240131T103000
DTEND;TZID=Europe/Rome:20240131T123000
DTSTAMP:20260508T153627
CREATED:20240122T151626Z
LAST-MODIFIED:20240122T151626Z
UID:31581-1706697000-1706704200@www.dica.polimi.it
SUMMARY:Flood hazard mapping: the HORA project
DESCRIPTION:Mercoledì 31 gennaio dalle ore 10.35 alle ore 11.20 presso l’Aula Grandori (Edificio 4 – p.za Leonardo da Vinci\, 32 – Milano) si terrà un seminario dal titolo: “Flood hazard mapping: the HORA project“\, tenuto dal Prof. Günter Bloeschl (TU Wien\, Institute of Hydraulic Engineering and Water Resources Management). \nA seguire\, dalle ore 11.30 alle ore 12.30 si terrà una discussione a tavolino con il Prof. Günter Bloeschl\, il Prof. Renzo Rosso e il Prof. Giovanni Menduni dove verrà affrontata la domanda: “Which design recommendations are suitable for flood hazard mitigation in urbanized territory under climate change meteorological forcing?” \nSarà possibile seguire il seminario online al seguente link. \nAbstract \nFlood hazard mapping is currently in a transitional phase involving the use of data and methods that were traditionally the domain of local studies in a regional or nation-wide context. Challenges include the representation of local information such as hydrological particularities and small hydraulic structures\, and computational and labour costs. This paper proposes a methodology of flood hazard mapping that merges the best of the two worlds (local and regional studies) based on experiences in Austria. The analysis steps include (a) quality control and correction of river network and catchment boundary data; (b) estimation of flood discharge peaks and volumes on the entire river network; (c) creation of a digital elevation model (DEM) that is consistent with all relevant flood information\, including river bed geometry; (d) simulation of inundation patterns and velocities associated with a consistent flood return period along the entire river network. In each step\, automatic methods are combined with manual interventions in order to maximise the efficiency and at the same time ensure estimation accuracy similar to that of local studies. The accuracy of the estimates is evaluated in each step. The study uses flood discharge records from 781 stations to estimate flood hazard patterns of a given return period at a resolution of 2 m over a total stream length of 38000 km. It is argued that a combined local-regional methodology will advance flood mapping\, making it even more useful in nation-wide or global contexts.
URL:https://www.dica.polimi.it/it/evento/flood-hazard-mapping-the-hora-project/
CATEGORIES:Seminari e conferenze
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