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Vulnerabilità e comunità: educazione, relazionalità, resistenza sociale
No full textLa vulnerabilità è un elemento fondante dell'esistenza umana e un principio pedagogico ed etico per la
costruzione di comunità solidali. Il saggio analizza il ruolo dell'educazione nel trasformare la fragilità in risorsa,
promuovendo un'azione politica basata sulla cura e sulla relazionalità; indaga la connessione tra vulnerabilità e
solidarietà politica, mettendo in luce come i movimenti sociali e le pratiche educative possano costituire
strategie di resistenza alle forme di esclusione e oppressione contemporanee.Vulnerability is a fundamental element of human existence and a pedagogical and ethical principle for the construction of solidary communities. The essay analyzes the role of education in transforming fragility into resource, promoting a political action based on care and relational; investigates the connection between vulnerability and political solidarity, Highlighting how social movements and educational practices can constitute strategies of resistance to contemporary forms of exclusion and oppression
Enhanced photocatalytic degradation of organic pollutants in water by g-C3N4/N-TiO2/Y1.97SiO5:Ce0.03 heterostructure
No full textA novel ternary heterostructure based on g-C3N4/N-TiO2/Y1.97SiO5:Ce-0.03 was synthesized via thermal treatment and evaluated for the photocatalytic degradation of two antibiotic pollutants, chloramphenicol (CAP) and vancomycin (VAN), in aqueous solution. The composite was designed to function as a photoactive platform, in which Ce3+-doped Y2SiO5 acts as an internal light converter, emitting at similar to 430 nm upon UV excitation (365 nm) to enhance activation of the g-C3N4/N-TiO2 interface. Structural and morphological characterizations (WAXD, FTIR, XPS, TEM) confirmed the formation of a well-integrated heterostructure with strong interfacial interactions. The photocatalyst achieved near-complete removal of CAP (99.7 %) and VAN (100 %) under UV light, and also showed high efficiency under simulated solar irradiation and in real water matrices. These results demonstrate the synergistic light-conversion and charge-transfer properties of the composite, underscoring its potential as a sustainable and scalable solution for antibiotic pollutant removal in water treatment applications
Uncertainty Estimation via Ensembles of Deep Learning Models and Dropout Layers for Seismic Traces
No full textGiovani, disuguaglianze e pratiche di resistenza: letture intersezionali
No full textIl volume affronta alcune delle fratture che attraversano il mondo giovanile in Italia utilizzando una prospettiva intersezionale e analizzando le pratiche e le strategie attivate per contrastare le disuguaglianze che ne derivano. Queste chiavi di analisi sono trasversali ad un percorso tematico che attraversa i principali ambiti in cui disuguaglianze e resistenze prendono forma: genere, territorio, background migratorio, appartenenza religiosa, sfera educativa, mondo del lavoro, tempo libero e ambiente. La riflessione e i casi presentati pongono l’accento sulle forme di protagonismo – anche inedite e creative – attraverso cui i giovani costruiscono nuovi spazi di cittadinanza. I contributi che compongono il volume nascono dal lavoro congiunto di studiosi e studiose appartenenti a dieci diverse università italiane che studiano la condizione giovanile
HERITAGE AND PRESIDIUM” DELLE AREE RURALI. L’ESPERIENZA DI “VILLAGE OF TRADITION”
No full textHeritage and presidium of rural areas. The Village of Tradition experience. The study illustrates a Project
for the regeneration of rural areas, focusing on social resilience. Based on the based on the evolution of the scientific
interpretation of the concept, the paper opens a reflection on the resilience of the elderly as a crucial element for the
vitality and sustainability of rural communities. Life experiences and a profound knowledge of local traditions constitute
a wealth of knowledge that can act as a catalyst for the regeneration of places, as emerged from the evidence gathered
during the early stages of the Campania Region’s Village of Tradition Project
Inference on a stochastic SIR model including growth curves
No full textA Susceptible-Infected-Removed stochastic model is presented, in which the stochasticity is introduced through two independent Brownian motions in the dynamics of the Susceptible and Infected populations. To account for the natural evolution of the Susceptible population, a growth function is considered in which size is influenced by the birth and death of individuals. Inference for such a model is addressed by means of a Quasi Maximum Likelihood Estimation (QMLE) method. The resulting nonlinear system can be numerically solved by iterative procedures. A technique to obtain the initial solutions usually required by such methods is also provided. Finally, simulation studies are performed for three well-known growth functions, namely Gompertz, Logistic and Bertalanffy curves. The performance of the initial estimates of the involved parameters is assessed, and the goodness of the proposed methodology is evaluated
Misure cautelari a tutela del credito tributario. Fermi, ipoteche e sequestro conservativo
No full textSimultaneous boosting visible light-driven benzene hydroxylation reaction rate and phenol selectivity via a novel monolithic polymer photoreactive composite based on N-doped TiO2 supported CuO
No full textA novel photoreactive composite consisting of CuO-loaded N-doped TiO2 (CuNdT) embedded in a syndiotactic polystyrene (sPS) monolithic aerogel was developed and evaluated for the photocatalytic hydroxylation of benzene to phenol under visible light irradiation. The process was identified as biphasic, where the photoreaction occurred within the solid phase of the composite, and the surrounding liquid phase acted as a reservoir for the desired product (phenol). The composite was extensively characterized through WAXD, SEM, BET, and tomographic analyses, confirming the uniform dispersion of CuNdT particles within the porous, hydrophobic sPS matrix. Under acidic conditions (pH = 2), the composite achieved 96 % benzene conversion and >99 % phenol selectivity within 180 min of irradiation, results that surpass those reported in the literature for visible-light-driven benzene hydroxylation. Kinetic modeling, based on experimentally determined partition coefficients for benzene and phenol, revealed that the composite operated entirely in a chemical regime, free from diffusional limitations. The calculated efficiency factors, all equal to 1, confirmed that the reaction was controlled solely by chemical processes occurring on the CuNdT dispersed inside the sPS matrix. The differences in kinetic constants between pH = 7 and pH = 2 highlighted the critical role of pH in driving the photocatalytic process. At pH = 2, the increased tendency of H2O2 to form hydroxyl radicals enhanced the rates of benzene consumption and phenol formation. Additionally, the higher affinity of benzene for the hydrophobic sPS polymer matrix at acidic pH, as reflected by its elevated partition coefficient, further facilitated its interaction with the composite, promoting faster oxidation. In contrast, phenol displayed a lower affinity for the hydrophobic sPS matrix at pH = 2, as evidenced by its lower partition coefficient, allowing it to remain in the liquid phase, reducing over-oxidation and contributing to the higher phenol yield (96 %) observed at acidic pH. This synergistic effect between enhanced hydroxyl radical generation, increased benzene affinity and reduced phenol affinity led to a more efficient photocatalytic process under acidic conditions. These findings establish CuNdT/sPS as a highly efficient, selective, and robust photocatalytic material, combining superior performance, structural stability, and excellent reusability for multiple reaction cycles
Existence of entire solutions vanishing at infinity by positive drift
No full textIn this paper, we consider a boundary-asymptotic value problem for second-order uniformly elliptic equations with possibly unbounded coefficients. Problems of this kind arise in stochastic control settings. By assuming a positive drift, and the finiteness of a hybrid norm of the source, we obtain the existence of solutions, vanishing at infinity, in any unbounded domain, including the whole n-dimensional space (entire solutions). We use a new ABP type estimate, independent on the size and the geometry of domains, due to positive drift, possibly unbounded, and viscosity methods to carry out a converging approximation process. Suitable limitations on the spatial oscillations of second-order terms allow to obtain strong and classical solutions