Politecnio die Bari - Catalogo di prodotti della Ricerca
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Insediamenti informali e prospettive di superamento nella Capitanata rurale
No full textIl servizio si concentra sui paesaggi rurali della Capitanata, importante territorio nella geografia della produzione agro-alimentare dove si addensano forme insediative come tracce di dinamiche di sfruttamento dei lavoratori migranti, in transito o residenti in modo permanente nel contesto regionale pugliese, esacerbate da gerarchie di potere e processi economici di scala transnazionale.
Con il ricorso ad indagini multidisciplinari, le riflessioni sviluppano posizioni differenti intorno al paradigma socio-spaziale del ‘campo’ informale e al suo ‘superamento’, inteso come affrancazione dalla precarietà abitativa, lavorativa ed economica, e si confrontano con approcci complementari di tipo teorico e pragmatico, secondo le finalità perseguite dai due gruppi di ricerca coinvolti (CAMP FORM(S) e Politecnico di Bari).The report focuses on the rural landscapes of the Capitanata area, an important territory in the geography of agro-food production where traces and signs thicken on the ground of the dynamics of migrant workers exploitation, in transit or permanently resident in the Apulian regional context, exacerbated by power hierarchies and economic processes on a transnational scale.
With the recourse to multidisciplinary investigations, the reflections develop different positions around the socio-spatial paradigm of the informal 'field' and its 'overcoming', understood as emancipation from housing, labour and economic precariousness, and confront complementary theoretical and pragmatic approaches, according to the aims pursued by the two research groups involved(CAMP FORM(S) and Polytechnic University of Bari)
Mode asymmetry in magneto-plasmonic slot waveguides enabling the design of non-reciprocal devices
No full textThe non-reciprocal behavior of integrated plasmonic slot waveguides is driven by the magneto-plasmonic effect, which arises from the interaction between magneto-optical materials and coupled plasmonic modes. This phenomenon provides a strong foundation for the design of advanced integrated non-reciprocal devices. Here, the electromagnetic analysis of magneto-plasmonic slot waveguides is reported. The performance of magneto plasmonic slot waveguides is evaluated in terms of Intensity Ratio (IR0), which quantify the asymmetrization of the propagation modes, and of Propagation Loss (PL). Moreover, a Figure of Merit (FoM), defined as the ratio between IR0 and PL, is proposed as a quality measure to evaluate the efficiency of magneto-plasmonic waveguides, making them suitable for use in non-reciprocal devices. Numerical results demonstrate that an IR0 of 20 dB can be attained in a magneto-plasmonic slot waveguide with propagation loss PL of 0.18 dB/μm, yielding a FoM of 1.2 at the optical wavelength of 1.55 μm
Mathematical modeling and sensitivity analysis of hypoxia-activated drugs
No full textHypoxia-activated prodrugs offer a promising strategy for targeting oxygen-deficient regions in solid tumors, which are often resistant to conventional therapies. However, modeling their behavior is challenging because of the complex interplay between oxygen availability, drug activation, and cell survival. In this work, we developed a multi-scale and mixed-dimensional model that coupled spatially resolved drug and oxygen transport with pharmacokinetics and pharmacodynamics to simulate the cellular response. The model integrated blood flow, oxygen diffusion, and consumption, drug delivery, and metabolism. To reduce computational cost, we mitigated the global nonlinearity by coupling the multi-scale and mixed-dimensional models one-way with a reduced 0D model for drug metabolization. The global sensitivity analysis was then used to identify key parameters influencing drug activation and therapeutic outcome. This approach enabled efficient simulation and supports the design of optimized therapies targeting hypoxia
Domains in Motion: A NLP Framework for Mapping Wind Energy Terminology
No full textWind energy constitutes a dynamic and interdisciplinary domain, shaped by technological innovation, evolving societal debates, and the interplay of diverse knowledge fields. Understanding its terminol- ogy is challenging, as concepts change quickly and overlap across different areas. This study introduces LUMEN, a computational method that uses Large Language Models (LLMs) and semantic embeddings to identify and organize subdomains within wind energy. Using a corpus of texts from 2016 to 2024 col- lected via Sketch Engine, LUMEN maps relationships among terms and highlights connections across the field. By providing translators and terminologists with a clear framework to visualize and navigate these complex terminological networks, the method demonstrates how NLP-based approaches can make the analysis of evolving, interdisciplinary domains both more precise and accessible
Steady-State Operation of Islanded Distribution Network with PV and Wind Generation
No full textEnergy management for islanded and small active distribution networks is more and more challenging due to intermittent distributed energy resource (DER) penetration increase. To this purpose, an optimisation-based framework in a co-simulation environment for the optimal steady-state operation of DERs integrated into small and islanded active distribution networks is proposed in this work. In particular, the optimal daily dispatch of DERs (i.e. wind turbine and photovoltaic), along with a battery energy storage system, is carried out to reduce biofuel consumption. The procedure is developed in Python and DIgSILENT PowerFactory for modelling and optimising system operation, while exploiting the quasi-dynamic simulation toolbox for better representing the network behaviour over daily time horizon. The approach is applied to a modified version of CIGRE Task Force C6.04 network and tested in three scenarios for evaluating the impacts of different DER level productions. The results showcase the potential for real-world application, and highlight significant improvements in DER management, contributing to enhance the operation of small active distribution networks
Experimental Assessment of a Synchronous Reluctance Machine Featuring an Additive Manufactured Rotor
No full textThe higher geometrical degrees of freedom enabled by additive manufacturing have paved the way to its widespread diffusion in many sectors ranging from aerospace to motor-sport. However, its application to electromagnetic parts is still in its infancy and requires detailed investigation aimed at revealing its boundaries. This work presents the experimental performance assessment of a synchronous reluctance motor featuring a rotor build with an additive manufacturing technique. The prototype motor is compared with its original laminated version by means of finite element analysis and the results of an extensive experimental campaign. Performance characteristics of two motors are deeply investigated in terms of flux-current maps and torque behavior in the entire operating range. The study reveals that the worsening of the magnetic material properties does not directly imply the worsening of the motor performance
A DC Microgrid as Electric Vehicle Supply Infrastructure: Energy Management Architecture and Field Implementation
Full text linkThe wide integration of electric mobility into distribution grids raises issues related to the safe operation of the networks, because of demand peak increase and service to be provided, especially for high charging rates and high vehicle penetration levels. Another crucial aspect concerns the development of a proper charging infrastructure with the aim of ensuring smart charging performances avoiding heavy economic efforts for users. A promising solution is represented by the combination of renewable energy source, storage and charging station in a DC microgrid framework, that could enable smart resource control and allow bidirectional power exchange with the grid for service provision. In this paper, the structure of a modular DC-based electric vehicle supply infrastructure is presented, as real demonstrator installed at the premises of the Bari Port Authority. The main features, along with the communication and control framework of the demonstrator, are described, along with control functions under implementation, and presenting some preliminary test results on the field
Autodichiarazioni legittimanti del privato ed esercizio di poteri inibitori postumi. Ancora su s.c.i.a. e “annullamento d’ufficio”
No full textLa disciplina del c.d. annullamento d’ufficio della segnalazione certificata di inizio attività è oggetto di diverse interpretazioni dommatiche e giurisprudenziali.Lo studio indaga in quali termini il principio di sicurezza dei rapporti giuridici possa incidere sull’interesse pubblico che legittima l’esercizio dei poteri inibitori postumi in caso di s.c.i.a. Si affrontano, altresì, le questioni di maggior rilievo che emergono dal d. lgs. n. 103/2024 in materia di controlli sulle attività economiche, nonché i dubbi di legittimità costituzionale dell’art. 21-nonies l. n. 241/1990 espressi dalla giurisprudenza.The legal framework of the ex officio annulment of certified start of activity declaration (segnalazione certificata di inizio attività, or s.c.i.a.) is subject to various doctrinal and jurisprudential interpretations.
This study examines how the principle of legal certainty may affect the public interest legitimizes the exercise of subsequent prohibitory powers in s.c.i.a. cases.
Additionally, it addresses the key issues arising from legislative decree no. 103/2024 regarding business activity controls, as well as constitutional legitimacy concerns regarding article 21-nonies of law no. 241/1990 raised by case law