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Design di complessi di Ir(III) polimerizzabili per nuovi metallopolimeri luminescenti
No full textThe project focused on the synthesis of iridium-based luminescent metallopolymers, which were obtained by introducing Ir(III) cyclometalated cationic complexes with general formula [Ir(C^N)2(N^N)]+, as side units in acrylic polymeric matrices. The synthetic process involved the radical copolymerization of Ir(III) complexes with methyl methacrylate, MMA. The complexes prepared for this purpose were represented by cationic compounds [Ir(ppy)2Lx]+ and [Ir(4CN-1npy)2Lx]+, and were synthesized from bifunctional N^N ligands capable of acting at the same time as ligands towards the metal centre and as monomers for the copolymerization. The studied complexes show significant luminescent performance and a display tuneable emission colour over the visible spectral range, through chemical modification of the ligands set. It was confirmed that the phosphorescent properties of discrete complexes were transferred to metallopolymers, resulting in hybrid polymeric materials that are transparent and capable of emitting different colours depending on the type of the introduced complex. For each metallapolymer, four materials were prepared characterized by different amounts of Ir(III) (ppmIr = 5, 10, 20 and 40 respectively) in order to compare the different emission intensities. Beyond showing considerable interest from a fundamental research perspective, the most immediate application area of these new luminescent hybrid materials concerns evaluating their use in Luminescent Solar Concentrator (LSC) technology
Retail Inventory Management in the Digital Era: A Web-Based Solution for In-Store Retail Operations
Get PDFThis thesis presents the design, implementation, and evaluation of Stock Uniters, a web-based stock management system developed for Poltronesofà. The project was motivated by the limitations of the previous Excel-based workflow, which relied on manual updates, suffered from delays in communication, and lacked accountability and traceability. The developed solution replaces fragmented spreadsheets with a centralized, full-stack application. The system features a Vue.js Single Page Application frontend and a FastAPI backend integrated with
the company’s Oracle infrastructure. Core functionalities include real-time stock registration, document scanning and uploads, role-based dashboards, and secure authentication through JWT. By embedding business rules directly into application logic, the system not only supports daily operations but also enforces organizational consistency.
A pilot deployment in five stores demonstrated significant improvements in efficiency and data reliability. Key performance indicators (KPIs), such as stock registration delay, document completeness, and inventory accuracy, showed measurable progress compared to the Excel-based process. Moreover, the system contributed to improved managerial visibility and enhanced accountability at the store level.
Beyond technical contributions, this work highlights the broader role of digital tools in enabling organizational change. The project illustrates how the introduction of Stock Uniters served as a concrete step in Poltronesofà’s digital transformation, demonstrating that even focused solutions can yield meaningful benefits in efficiency, traceability, and cultural alignment towards data-driven decision-making
Emerging healthcare markets: study of Medtech in China and pharmaceuticals in India
No full textInstitutional and regulatory contexts play a decisive role in shaping business strategies in emerging healthcare markets, with China’s MedTech industry and India’s pharmaceutical sector as two emblematic examples.
The analysis combines the PESTEL framework with case studies of Siemens Healthineers and AstraZeneca. Findings show that the Chinese MedTech sector is marked by strong state influence, making localization and institutional partnerships crucial for market access.
By contrast, the Indian pharmaceutical market follows a hybrid model: generics are supported through strict patent rules and price controls, while innovative drugs benefit from collaborations between government, academia, and industry.
The case studies highlight how Siemens builds its strategy around government relations within China’s state-driven environment, whereas AstraZeneca focuses on community engagement and flexible distribution in India. From a managerial perspective, the evidence suggests that multinational healthcare companies must look beyond technological capabilities and competitive dynamics, anchoring their strategies within wider institutional and social ecosystems.
The interaction between regulation, innovation, and social responsibility emerges as a key factor for ensuring both the sustainability and the legitimacy of corporate strategies in these markets
Ambient noise tomography of the Etna magma system during the 2020-2021 period
No full textWe applied ambient noise tomography (ANT) to image Rayleigh-wave phase-velocity variations beneath Mount Etna during the 2020–2021 period, aiming to constrain the deep magma system. Continuous seismic data recorded by the INGV network were processed using the SeisLib Python framework, which automates empirical Green’s function retrieval through cross-correlation and implements a stabilized least-squares inversion for tomographic imaging. The cross-spectrum of two-year-long ambient noise records yielded Rayleigh-wave dispersion curves between 0.10–0.40 Hz. Phase-velocity maps derived at discrete frequencies (corresponding to 2.5–10 s periods) reveal systematic lateral heterogeneities within the studied area. Across the investigated depth range (2–25 km), results reveal a radially symmetric low-velocity anomaly centered near 37°40′ N–14°35′ E. Thanks to the constraints provided by active seismicity, this anomaly is interpreted as a ductile or partially molten region that expands northeastward beneath Mt. Etna from 8–10 km depth. The area remains largely aseismic down to 18 km, below which clustered seismicity likely reflects dike-fed magma ascent. Shallow anomalies (2–3 km) suggest the presence of hydrothermal fluids within the Catania Plain and a rigid intrusive body beneath the volcanic edifice, while intermediate depths (6–10 km) reveal a fractured domain beneath the Nebrodi Mountains consistent with ongoing crustal compression. The southeastern sector remains mechanically rigid and thermally cold throughout, reflecting the structural influence of the extinct volcanic systems
Characterization of compound coastal flooding in the Keta basin
No full textLow-lying coastal areas such as the Ghanaian coasts are increasingly exposed to multiple, interacting climate hazards that threaten ecosystems, livelihoods, and infrastructures. Compound flooding, where the combination or successive occurrence of two or more flood drivers leads to a greater impact, can exacerbate the adverse consequences of flooding, particularly in coastal–estuarine regions. This thesis delineates a reproducible framework for compound flooding characterisation in data-scarce environments, bridging the climate-informed data analysis to the planning and evaluation of Nature-based Solutions (NbS) for coastal risk reduction. To address this overarching goal, the research assesses and validates multi-source climate datasets, notably the GloFAS hydrological reanalysis and the JRC offshore water level dataset, and then characterises the statistical behaviour of extreme river discharge and water level through univariate and bivariate Extreme Value Analyses (EVA), combining percentile-based thresholding, Peaks-Over-Threshold fitting, and copula-based modelling to identify and quantify compound coastal–fluvial flood events. The results demonstrate that river discharge and coastal water level extremes in the Volta Delta region, where Keta basin is, exhibit strong but asynchronous seasonality, limited long-term trends, and weak tail dependence, indicating that compound events are infrequent and primarily driven by temporal coincidence rather than strong physical coupling. Lastly, a third phase of the framework is conceptually outlined as future work, proposing the generation of synthetic extreme events through the UNprecedented Simulated Extremes using ENsembles (UNSEEN) approach to enrich the historical characterisation of compound flooding, by expanding the observational records with physically plausible, yet historically unobserved, extreme events. This would enable the subsequent evaluation of NbS performance under plausible, non-observed scenarios
Politopi e visualizzazione geometrica: dai solidi platonici ai policori regolari
Get PDFLa tesi analizza i politopi regolari come estensione dei poligoni e dei poliedri alle dimensioni superiori. Dopo aver richiamato le proprietà metriche e combinatorie dei solidi platonici, si introduce la definizione formale di politopo e la generalizzazione della formula di Eulero e del criterio di Schläfli. Viene presentata la classificazione dei sei policori regolari in quattro dimensioni e la loro costruzione. Infine, si descrivono le tecniche di visualizzazione basate sulla composizione tra proiezione radiale e proiezione stereografica
Analisi ed Estensione di una Thing Description Directory
Get PDFLa crescita esponenziale dei dispositivi interconnessi ha caratterizzato il panorama dell'Internet of Things (IoT), portando sfide significative nell'interoperabilità e nella standardizzazione della comunicazione tra dispositivi. Il paradigma Web of Things (WoT), formalizzato dal W3C, affronta queste sfide adottando i principi architetturali e le tecnologie consolidate del World Wide Web, fornendo un framework uniforme per l'integrazione e l'accesso ai dispositivi.
Questa tesi presenta l'analisi e l'estensione di WoTerFlow, un'implementazione sperimentale di una Thing Description Directory (TDD) conforme alle specifiche W3C. Una TDD funge da registro che memorizza e fornisce accesso alle Thing Description di più dispositivi, funzionando come repository consultabile dove i dispositivi IoT possono registrare le proprie descrizioni e i client possono scoprire i dispositivi disponibili e le loro funzionalità.
Il lavoro si concentra su tre obiettivi principali: risoluzione delle problematiche esistenti nell'implementazione corrente, estensione e modifica delle funzionalità implementate e introduzione di nuovi test
On the Numerical Solution of Large-scale Differential Riccati Equations
Get PDFThis thesis investigates efficient numerical methods for solving large-scale Differential
Riccati Equations (DREs), which commonly arise in optimal control and filtering problems.
The DRE is discretized in time using Backward Differentiation Formula (BDF)
schemes, leading to a sequence of Algebraic Riccati Equations (AREs) solved via iterative
techniques such as the Newton–Kleinman method, Newton’s method with exact
line search, and low-rank ADI-based algorithms. A modified ADI scheme is then proposed,
allowing for nonzero initial iterates and enabling the reuse of previous solutions
to accelerate convergence. The performance of the low-rank methods is validated on
the rail profile cooling problem, modeled within the Linear Quadratic Regulator (LQR)
framework. Numerical experiments confirm the expected convergence order O(h^p) and
demonstrate that the proposed low-rank approaches substantially improve computational
efficiency and scalability for high-dimensional problems
Implicazioni organizzative della Direttiva NIS2: il supporto degli standard internazionali e il ruolo strategico del CISO nell’attuazione della normativa
No full textLa Direttiva (UE) 2022/2555 (NIS2) rappresenta il nuovo quadro normativo europeo volto a rafforzare la resilienza cibernetica dell’Unione e a garantire un livello comune elevato di sicurezza delle reti e dei sistemi informativi. Essa estende il perimetro dei soggetti obbligati a implementare misure di cybersicurezza, introduce obblighi di governance e reporting stringenti e attribuisce responsabilità dirette agli organi di gestione, determinando un profondo impatto sulla struttura interna delle imprese.
Dal punto di vista organizzativo, la NIS2 richiede notevoli investimenti per attuare una revisione dei modelli di governo della sicurezza, orientando le aziende verso un approccio strutturato alla gestione del rischio, alla formazione del personale e alla definizione di ruoli e responsabilità chiare.
La tesi analizza inoltre il contributo degli standard internazionali ISO/IEC 27001:2022 e NIST Cybersecurity Framework 2.0 come strumenti di supporto all’attuazione della Direttiva. Attraverso una mappatura tra l'articolo 21 della NIS2, i controlli ISO e gli obiettivi delle funzioni NIST, viene evidenziato un grado di complementarità molto elevato, seppur non totale.
La parte empirica, basata su interviste a Chief Information Security Officer (CISO) di due distinte organizzazioni, esplora come tali figure interpretino la NIS2 nel contesto aziendale. I CISO emergono infatti come attori strategici nel tradurre i requisiti normativi in politiche, processi e indicatori di performance, fungendo da collegamento tra top management, funzioni operative e autorità di vigilanza.
In conclusione, la ricerca dimostra che la piena attuazione della Direttiva NIS2 non si ferma all’adozione di standard tecnici, ma richiede un’evoluzione organizzativa profonda, basata sulla responsabilizzazione dei vertici, sulla governance integrata e basata sul rischio, sul dialogo con le autorità e sulla diffusione di una cultura di cybersicurezza condivisa
Misura di Hausdorff e Frattali Autosimili
No full textL’obiettivo di questa tesi è quello di studiare le principali proprietà della misura di Hausdorff, e di vedere come quest'ultima permette di definire una nuova dimensione che estende la definizione topologica. Si studia poi un'ulteriore dimensione, quella box-counting, per poi osservare le similitudini e le differenze con quella di Hausdorff. Nel secondo capitolo si introduce un’importante classe di frattali, detti frattali autosimili, che sono composti da parti simili all’intero insieme. Nell’ultima parte vengono illustrate le costruzioni dei principali esempi di frattali autosimili, e si vede una loro particolare applicazione nelle comunicazioni radio