8 Tesi di dottorato

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Essays on Resilience and Economic Performance

This dissertation examines the dynamics between resilience and economic development, with a particular focus on how resilience interacts with different dimensions of economic performance. While resilience has gained increasing attention in both academic and policy debates, its role within long-term economic development remains to some extent underexplored. This thesis contributes to bridging this gap by investigating resilience from multiple perspectives, emphasizing the localized and context...

Counterfactual Explainability in Graphs: Foundations, Generative Methods, and Ensemble Techniques

Graph Neural Networks (GNNs) have revolutionized numerous domains, from social network analysis and recommender systems to biochemistry, by leveraging the rich interplay between node attributes and their relationships. These models excel at capturing the complexities of graph-structured data, driving advancements in prediction accuracy. However, their black-box nature poses a critical challenge in high-stakes fields like healthcare and finance, where transparency, trust, and fairness are non-...

Self-Adaptive Testing in the Field

We are increasingly surrounded by systems connecting us with the digital world and facilitating our lives by supporting our work, leisure, activities at home, health, etc. These systems are pressed by two forces. On the one side, they operate in environments that are increasingly challenging due to uncertainty and uncontrollability. On the other side, they need to evolve, often in a continuous fashion, to meet changing needs, to offer new functionalities, or also to fix emerging failures. To ...

Supporting Domain-Independent Model Management through Automated REST APIs Generation

The increasing complexity of modern software systems has made effective model management a crucial challenge in software engineering. Model-Driven Engineering (MDE), which places models at the core of the development process, has emerged as a promising approach to managing this complexity. The MDE paradigm is a software development method that aims to improve productivity and software quality by using models as primary artifacts in all aspects of the software engineering process. In this appr...

Precision β-Decays Measurements with Low-Temperature Calorimeters: a Benchmark for Nuclear Models

This Ph.D. thesis presents a comprehensive investigation of two fundamental nuclear decay processes: the two-neutrino double-beta (2νββ) decay of 130Te, studied within the CUORE experiment, and the fourth-forbidden β-decay of 115In, explored through the ACCESS project. The main target is performing precise measurements of half-life and spectral shapes of these decays to refine nuclear matrix element calculations, test nuclear models, and probe the effective axial coupling constant within nucl...

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