148790 research outputs found
Sort by
Tutele del lavoro e conflitto collettivo nelle filiere della logistica : una panoramica
No full textIl saggio analizza il settore della logistica come paradigma avanzato delle trasformazioni del diritto del lavoro contemporaneo, mettendo in luce il nesso tra frammentazione organizzativa, sfruttamento della manodopera e ridefinizione delle tutele giuridiche lungo la filiera. Dopo aver ricostruito il modello di business della logistica integrata e le principali pratiche elusive, l’analisi si concentra sulle tecniche di prevenzione di nuova generazione, con particolare attenzione al Cruscotto informativo per la gestione dei contratti di appalto (CIGAL), e sui tradizionali strumenti di tutela individuale, quali la responsabilità solidale del committente e la disciplina della salute e sicurezza sul lavoro. Il lavoro esamina infine le lotte dei facchini e la nuova geografia del conflitto collettivo, soffermandosi sui problemi di qualificazione giuridica del picchettaggio e sul ruolo della giurisprudenza nel bilanciamento tra libertà sindacali e istanze securitarie
METODOLOGIE DIDATTICHE ATTIVE PER L’APPRENDIMENTO DELL’ARCHITETTURA CLASSICA: UN SERIOUS GAME SU “LA REGOLA DELLI CINQUE ORDINI DI VIGNOLA”
No full textLa presente tesi di dottorato costituisce un tentativo di ricostruzione dello stato della ricerca nell’ambito dei videogiochi educativi o Serious Games per l’apprendimento dell’architettura e del Patrimonio Culturale. L’intento è quello di effettuare una indagine teorica e, successivamente, la progettazione e applicazione di un caso studio in un ambiente di apprendimento formale, allo scopo di dare un contributo empirico al campo dell’innovazione della didattica in architettura. La struttura di questa tesi può essere suddivisa in tre sezioni: La prima riguarda l’inquadramento teorico-legislativo dell’apprendimento attivo e dei Serious Games, nonché, la ricostruzione dello stato dell’arte.La seconda sezione riguarda la descrizione del caso studio proposto in questa tesi, ovvero il Serious Game dal titolo Architectura Enigma. Tale proposta è articolata in tre sotto-sezioni: la prima tratta la sintesi degli elementi chiave identificati durante lo studio dello stato dell’arte, ovvero una breve descrizione dei punti di forza, punti di debolezza, criticità e potenzialità emerse durante l’indagine. Tale identificazione ha costituito una base teorico-pratica a partire dalla quale si sono potuti delineare i principi di design del gioco. La seconda sotto-sezione tratta il fondamento teorico su cui si basa il Serious Game, ovvero quei principi che hanno dettato le cosiddette meccaniche di gioco nonché i contenuti didattici. La terza, infine, è una descrizione dei processi tecnici atti allo sviluppo del videogame, ovvero: la fase di ridisegno tecnico e modellazione degli artefatti architettonici, il design dei principi e delle meccaniche di gioco e la programmazione delle interazioni.La terza sezione riguarda l’applicazione sperimentale di Architectura Enigma in un ambiente di apprendimento formale tramite fase di osservazione, raccolta ed analisi dei dati. A seguito della sperimentazione è stato possibile formulare delle considerazioni conclusive relative all’impiego dei serious games come dispositivi epistemici convenzionalmente applicabili alla didattica in architettura.This doctoral dissertation represents an attempt to reconstruct the state of research in the field of educational video games, or Serious Games, for the learning of architecture and Cultural Heritage. The aim is to conduct a theoretical investigation and subsequently to design and implement a case study within a formal learning environment, with the objective of providing an empirical contribution to the field of innovation in architectural education.The structure of this dissertation can be divided into three sections.The first section concerns the theoretical and legislative framework of active learning and Serious Games, as well as a reconstruction of the state of the art.The second section focuses on the description of the case study proposed in this dissertation, namely the Serious Game entitled Architectura Enigma. This proposal is articulated into three subsections. The first presents a synthesis of the key elements identified during the analysis of the state of the art, namely a brief description of the strengths, weaknesses, critical issues, and potentialities that emerged during the investigation. This identification constituted a theoretical–practical foundation from which the game design principles were derived. The second subsection addresses the theoretical framework underlying the Serious Game, that is, the principles that informed the so-called game mechanics as well as the educational content. Finally, the third subsection describes the technical processes involved in the development of the video game, namely: the technical redesign and modeling of architectural artifacts, the design of game principles and mechanics, and the programming of interactions.The third section concerns the experimental application of Architectura Enigma within a formal learning environment through phases of observation, data collection, and data analysis. Following the experimentation, it was possible to formulate concluding considerations regarding the use of Serious Games as epistemic devices conventionally applicable to architectural education
A Methodology for the Techno-Economic Assessment of MVDC Integration in Distribution Networks
No full textThis article proposes the use of a comprehensive methodology for the implementation of MVDC (Medium Voltage Direct Current) technologies in AC medium-voltage distribution grids. The objective is to evaluate technical advantages and economic consequences of transforming portions of AC networks to DC or incorporating DC-based technologies. The approach is tested on three test cases, results show that MVDC solutions can address problems like line overloads, voltage rise, and power flow inversion. These solutions are, however, always more expensive by orders of magnitude 3 to 10 than conventional AC reinforcements, thus placing attention on the need for a case-by-case strategy in order to obtain a technical benefit that counterbalances the excess expenditure compared to a traditional solution
Easy Preparation of Carbon Nano Onion—Poly Ionic Liquid-Like Hybrids Through the Deep Eutectic Monomer (DEM) Approach and Their Use in Heterogeneous Catalysis
No full textCarbon nano-onions (CNOs) are efficiently functionalized using a sustainable approach based on polymerizable deep eutectic solvents (PDESs), or deep eutectic monomers (DEMs). These systems replace conventional organic solvents, acting simultaneously as dispersing media and functionalization reagents. The method enables the rapid introduction of functional groups such as –OH, –NH3+Br−, and –SO3− onto CNO surfaces. The resulting materials are comprehensively characterized by TGA, 13C-CPMAS-TOSS NMR, FT-IR spectroscopy, TEM, AFM, DLS, and XPS. Notably, sulfonate-functionalized CNOs support the Keggin-type polyoxometalate H3PW12O40 (PW12), which acts as a recyclable heterogeneous catalyst for the oxidation of alcohols to carbonyl compounds
Advanced Biomaterial-Based In Vitro Osteoarthritis Models: Integrating Sex as a Biological Variable in Hormonal, Subchondral Bone, and Mechanobiological Pathways
No full textOsteoarthritis (OA) is the most common form of arthritis and represents a major clinical and socioeconomic burden. Epidemiological data consistently show that OA affects women more frequently and, in several joints, more severely than men. Nevertheless, current in vitro models rarely consider sex-specific variables, limiting their ability to capture the biological mechanisms that shape the pathogenesis and progression of OA. Increasing evidence indicates that age-related hormonal fluctuations and subchondral bone remodeling strongly influence OA evolution, and that these processes differ between the sexes. For instance, the decline in estrogen levels during menopause has been associated with accelerated cartilage degeneration, increased osteoclastic activity, and a higher susceptibility to subchondral bone alterations, which may contribute to more aggressive clinical manifestations in women. These mechanisms are only partially reproduced in widely used experimental systems, including traditional biomaterial scaffolds and simplified osteochondral constructs, leaving important sex-dependent pathways unresolved. While advanced biomaterials enable precise control of stiffness, porosity, and biochemical cues, most current in vitro OA models still rely on sex-neutral design assumptions, limiting their ability to reproduce the divergent disease trajectories observed in men and women. By integrating material properties with dynamic loading and tunable hormonal conditions, next-generation in vitro systems could improve mechanistic understanding, increase the reliability of drug screening, and better support the development of sex-specific therapies through the combined efforts of bioengineering, materials science, cell biology, and translational medicine
Switching between ordinary and non-ordinary activity at Stromboli volcano: insights from short- and long-term thermal trends recorded from space
No full textOrdinary, moderately explosive activity at Stromboli is sporadically interrupted by larger effusive and explosive events that
can trigger hazardous phenomena such as sector collapses, tsunamis, and ballistic fallout. We analyze 25 years of satellite
infrared data to characterize the thermal pattern associated with these larger events, including: (1) effusive eruptions,
(2) lava overflows, (3) major explosions, and (4) paroxysms. Increased heat flux precedes effusive eruptions and overflow
sequences, and is interpreted to reflect the progressive rise of the magma column in the conduit accompanying the transition
between Strombolian and effusive regimes. Conversely, major explosions are not preceded by any detectable thermal
increase, although they statistically occur during periods of frequent overflows in which the Volcanic Radiative Power
(VRP) is punctuated by higher values. Paroxysms (which occurred at the beginning, during and at the end of the effusive
eruptions) do not show systematic thermal patterns in the preceding days, but in most cases are followed by a VRP increase.
Major explosions and paroxysmal events contribute minimally to the long-term energy released by the volcano. Instead,
the energy output is primarily governed by the recurrent transitions between Strombolian- and effusive-dominated regimes,
sustaining a long-term, steady-state VRP of approximately 14.5 MW. Overall, only ~ 25% of the thermal energy is radiated
during Strombolian activity, whereas overflows and effusions account for ~ 15% and ~ 60%, respectively. Results highlight
that satellite thermal analysis is a useful tool for tracking changes of surface activity at open-vent basaltic volcanoes with
frequent switching from ordinary low-energy activity to more energetic explosive or effusive eruptions
Credere, obbedire, combattere
No full textThe article takes its cue from the Fascist motto «Believe, obey, fight»,
interpreting it as a formula that condenses a grammar of blind or irresponsible obedience. Through a rereading of the motto in light of classical Greek vocabulary, the essay highlights the structural link between believing (pisteuein) and obeying (peithesthai), showing how the nature of belief (pistis)—oscillating between reasoned adherence and unreflective reliance—structurally determines the quality and type of obedience. In the second part, the analysis focuses mainly on the functions that make Amtssprache, the bureaucratic language, the linguistic practice that most effectively promotes blind obedience: obscuring and distancing; automating; building loyalty
Bacterial-driven lipid remodeling in avocado fermentation via hydroxylation and oxidation routes
No full textWe investigated the lipid metabolism of three lactic acid bacteria in fermenting two avocado cultivars. Using Liquid Chromatography-High-Resolution Mass Spectrometry, we tracked the fermentation-induced modifications in native lipid profiles. These modifications unveiled an increase in free fatty acids (FA) but also the generation of their oxidized derivatives associated with 14 different m/z ratios. Mono-, di-, and tri-hydroxylated derivatives originating from major unsaturated FA (18:1, 18:2, 18:3), along with oxidized forms of 16:0 and 18:0 FA, were recognized through the interpretation of tandem mass spectrometry data. Tandem mass spectrometry also suggested oxidized derivatives from minor FA (16,1, 16:2). In certain cases, bacterial-driven hydroxylation processes were confirmed on oleic acid in synthetic media. Overall, bacterial-driven hydroxylation and oxidation enriched avocado with potentially bioactive lipids, offering opportunities for nutraceutical and food applications, with minimal undesirable sensory effects specifically affected by microbial species and avocado cultivar
MULTIFUNCTIONAL AND SUSTAINABLE NANOMATERIALS FOR EMERGENT POLLUTANT REMOVAL
No full textThe growing release of pollutants into water systems demands sustainable materials for efficient remediation. This work explores nanostructured materials as versatile tools for the selective capture and degradation of pollutants. Halloysite nanotubes were studied as low-cost adsorbents, with surface functionalization enhancing their interaction with contaminants. Their biocompatibility was evaluated using model lipid membranes. Magnetically responsive Pickering emulsions stabilized by wax and hematite microcubes were developed for smart pollutant capture and easy magnetic recovery. Finally, computational investigations on manganese oxide revealed photocatalytic degradation pathways of organic pollutants, using ibuprofen as a model compound. Together, these systems highlight the potential of tailored nanomaterials for integrated, sustainable water remediation strategies