Higher Institute on Territorial Systems for Innovation
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Experimental and regulatory approaches for the standardisation of surgical meshes
No full textL'abstract è presente nell'allegato / the abstract is in the attachmen
L'Emergenza Spontanea del Proto-Indoeuropeo in uno Spazio Latente Pentagonale: Geodetiche Iperboliche e Punti di Sella nel Progetto PantaRei IV
No full textIl presente studio espone l'evoluzione del progetto PantaRei verso una comprensione topologica della transizione linguistica attraverso l'uso di Autoencoder. Superando l'interpolazione lineare statica, la metodologia PantaRei IV introduce una triangolazione pentagonale (Greco, Latino, Sanscrito, Ittita, Gotico) all'interno di un manifold a 64 dimensioni.Attraverso l'attivazione sigmoidea dello strato di bottleneck, che agisce come una funzione iperbolica, lo spazio latente viene deformato in una varietà non euclidea in cui i significati seguono percorsi di minima energia (geodetiche). Monitorando la metamorfosi dinamica in 20 passi discreti, si osserva l'emergenza di un punto di sella critico (Passo 10). In questa zona di transizione, il modello non si limita a una media statistica, ma "estrude" spontaneamente radici fonetiche primordiali vicine al Proto-Indoeuropeo (PIE) ricostruito, come la radice \*bhéreti e forme laringali artificiali. I risultati dimostrano che la pressione informativa di un sistema a cinque corpi linguistici costringe la macchina a operare come un acceleratore di particelle filologico, isolando l'invariante strutturale del linguaggio dalla deriva storica
Evaluating Smartphone RTK Performance with Low-Cost GNSS Receivers and Correction Services in Traditional and Low-Cost GNSS Networks
No full textThe emergence of low-cost GNSS hardware and affordable RTK correction services has made high-precision positioning more accessible. While prior studies have investigated RTK capabilities using smartphones, most rely on professional geodetic infrastructures. This study shifts the focus toward evaluating smartphone-based RTK positioning within low-cost GNSS networks and comparing the performance against traditional geodetic network setups. The research investigates two main configurations: (1) a smartphone functioning as an RTK rover within a low-cost GNSS network, using a low-cost base station and publicly available or inexpensive correction services, and (2) the same smartphone setup operating within a traditional geodetic network with high-grade base stations. The study aims to assess the viability of smartphones as RTK rovers in low cost networks, exploring metrics such as horizontal and vertical positioning accuracy, fix reliability, initialization time, and system responsiveness. Preliminary findings suggest that smartphones integrated with low-cost GNSS receivers can deliver sub-meter accuracy under favorable conditions, though some trade-offs are noted when compared with geodetic-grade infrastructure. The study emphasizes the potential of cost-effective RTK configurations for practical applications where high precision is required. By comparing performance across traditional and low-cost network configurations, this research demonstrates the increasing potential of using smartphones and low-cost GNSS systems to make high-precision positioning more accessible
NO-STRESS Manufacturing Study of work-related stress under different production conditions
No full textL'abstract è presente nell'allegato / the abstract is in the attachmen
From biomass to battery: lignin-derived carbons achieving unprecedented high capacity retention in potassium batteries
No full textThe increasing demand for sustainable energy storage solutions has led to a growing interest in post‐lithium-ion battery technologies. In this context, potassium-ion batteries (KIBs) have emerged as a promising alternative for large-scale applications due to the high natural abundance, cost-effectiveness, and favorable electrochemical properties of potassium. Hard carbon materials derived from biomass are particularly attractive as KIB anodes, offering a sustainable solution with appropriate structural and electrochemical behavior. This study investigates the electrochemical performance of hard carbons derived from lignin-rich biomass residues, which are chemically activated with different KOH ratios. Structural, morphological, and compositional analyses are conducted to elucidate the influence of activation parameters on porosity, chemical composition, graphitization degree, and interlayer spacing. Additionally, chemical composition and formation mechanism of the solid electrolyte interphase layer are in-depth analyzed. This work underscores the potential of biomass-derived hard carbons as sustainable anode materials for next-generation KIBs, aligning with circular economy principles and renewable energy storage strategies, and also targeting unprecedented electrochemical performances in terms of device durability
Calcium alginate hydrogel for high-yield adsorption-based desalination driven by ultralow-grade heat
No full textAdsorbent-based desalination stands out as a promising solution to produce fresh water leveraging on ultralow-grade heat. We investigate the use of a bio-derived calcium alginate (CaAlg) hydrogel, an alternative to other common sorbents. A batch of CaAlg is synthesized and characterized in a gravimetric sorption analyzer. The resulting type II isotherm at 30 degrees C shows an exceptional water uptake equilibrium value of 1.28 g/g at a relative humidity of 70%, realizing nearly a 4-fold increase compared to standard silica gels under the same conditions. We test CaAlg under vacuum in a water desalination unit. Our material shows an excellent medium-term cyclability, with a stable uptake over 40 cycles of operation. We achieve water production even at a temperature as low as 45 degrees Celsius, with a specific daily water production (SDWP) of 6 m3/day/ton using a hot-source temperature of 60 degrees Celsius, realizing the most performant small-scale system in the context of ultralow-grade waste heat valorization
A kernel-based approach to physics-informed nonlinear system identification
No full textThis paper presents a kernel-based framework for physics-informed nonlinear system identification that extends kernel-based techniques, accounting for unmodeled dynamics, to seamlessly embed partially known physics-based models, improving parameter estimation and overall model accuracy. The two models' components are identified from data simultaneously, thereby minimizing a suitable cost that balances the relative importance of the physical and the black-box parts of the model. Additionally, nonlinear state smoothing is employed to address scenarios involving state-space models with not-fully measurable states. Numerical simulations on an experimental benchmark system demonstrate the effectiveness of the proposed approach, achieving up to 51% reduction in simulation root mean square error compared to physics-only models and 31% performance improvement over state-of-the-art identification techniques
DM 352 - Study of sustainable materials and processes for energy transmission and storage devices
No full textL'abstract è presente nell'allegato / the abstract is in the attachmen
Integrated Technologies for the Decommissioning of LWR Primary Systems: Cutting, Chemical Decontamination, and Conditioning of Spent Ion Exchange Resins
No full textL'abstract è presente nell'allegato / the abstract is in the attachmen