1.4 Contributi in atti di convegno - Contributions in conference proceedings

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A Hamiltonian Set-Up for 4-Layer Density Stratified Euler Fluids

By means of the Hamiltonian approach to two-dimensional wave motions in heterogeneous fluids proposed by Benjamin [1] we derive a natural Hamiltonian structure for ideal fluids, density stratified in four homogenous layers, constrained in a channel of fixed total height and infinite lateral length. We derive the Hamiltonian and the equations of motion in the dispersionless long-wave limit, restricting ourselves to the so-called Boussinesq approximation. The existence of special symmetric solu...

Coupled hydro-mechanical modelling of the seismic response of a zoned earth dam

Global climate change is leading to prolonged periods of low rainfall followed by intense thunderstorms, causing severe droughts in vital water resources like rivers and reservoirs. Additionally, heavy rainfall events are causing landslides and significant damage in many countries. Dams and artificial water reservoirs are crucial in mitigating these risks. Given the limited availability of suitable sites for constructing new reservoirs, existing dams must be safeguarded, although they als...

Gravity induced shape effects on the time-dependent evaporation of pendant drops

The paper presents a method to model the time-dependent evaporation of pendant drops taking into account the effect of drop deformation induced by gravity. The model is based on the solution to the time-dependent drop mass and energy conservation equations, where the mass and energy fluxes through the gas mixture are numerically evaluated for a range of Bond numbers and contact angles. The evaporation characteristics of pendant and sessile drops on hydrophobic and hydrophilic substrates are c...

Exploring the Environmental Impact of Telemedicine: A Life Cycle Assessment

Background: Telemedicine has emerged as a potential solution to mitigate the significant greenhouse gas emissions of the healthcare sector. A comprehensive evaluation is required to quantify the environmental benefits of its implementation. Objectives: The study aims to compare the environmental sustainability of in-person and virtual examinations for heart failure patients. Methods: A standard life cycle assessment has been applied to quantify the equivalent CO2 of direct and indirect activi...

Traffic-Light Control at Urban Intersections Using Expected Waiting-Time Information

We consider an optimal traffic-light control framework for urban traffic intersections to alleviate congestion phenomena. We analyze a scenario in which we provide drivers with information about the waiting time at the intersections. We model the drivers' lane-changing information-based behavior as the solution of a convex optimization problem. We compute the optimal traffic-light control mechanism as the solution to a bi-level optimization problem. We provide a complete analysis in terms of ...

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