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Alessandro Agostini

Publications and source records attributed to Alessandro Agostini.

2 recordsLinked to original sources

UzWordnet and Generative AI for Learning Uzbek by Game Playing

This paper presents an educational system architecture that enables learners to practice the Uzbek language through game-playing. The architecture integrates UzWordnet and the largest currently available orthographic dictionary for Uzbek as core lexical resources, together with generative AI as a fundamental component for learning support. We design four educational games to facilitate Uzbek language learning and propose a game-based methodology for improving UzWordnet as a direct by-product of game dynamics. Our approach combines game design and lexical resources to address objectives that are at the same time educational (language learning) and lexical (improvement and enrichment of a lexical resource).

cs.CL

Enhancing TiFe Alloy Activation for Hydrogen Storage Through Al, Cr, Co, and Cu Substitutions as a Step Towards Future Recycling

This study investigates the activation behavior of $TiFe_{0.80}$-$X_{0.20}$ (X = Co, Cu, Cr, Al) alloys to identify the most effective materials for producing hydrogen storage alloys from recycled sources in view of a circular economy perspective. Activation was tested using two methods: a Sievert Volumetric Apparatus at room temperature and 64 bar of hydrogen, and high-pressure differential scanning calorimetry with 50 bar hydrogen under thermal cycles up to 400 {\deg}C. Activation properties were analyzed by assessing time for incubation and for full charging, that are influenced, respectively, by surface and bulk diffusion of hydrogen. Results showed that Cr-substituted alloys are rapidly activated, due to the presence of $TiCr_{2}$ compound, while Al-containing alloys absorbed hydrogen immediately. In contrast, Co- and Cu-substituted alloys required extended activation times, due to less quantity of secondary phases and limited diffusion channels.

cond-mat.mtrl-sci