147 research outputs found
Postilla anti-hermetica = Anti-hermetic Postscript
No full textIn 1987 Carlo Formenti wrote an essay dedicated to Prometheus and Hermes. In that book Formenti has been analysing the character of Prometheus the Titan as the symbol of the working class and its intellectuals. In that phase, few years before the fall of the Berlin Wall, the crisis of the traditional revolutionary myths led the author to recognise a new symbol in Hermes, sensitive to a post-ideological attitude and ready to interpret the new egalitarian myths born with the internet. Today Formenti comes back to the issue and describes a further drastic disenchant
Non esistono saperi non agonici = There is no knowledge without agonism
No full textThere is no knowledge without agony. In 1986 Formenti wrote Prometheus and Hermes, in which the sunset of the Titan – as the icon of the emancipation of the nineteenth-twentieth century’s working class – has been put in relation with the crisis of the Fordist industry and the workers’ achievements. The rise of Hermes has been differently associated with the development of new communication technologies and their positive effects. Afterwards, Formenti reshaped such hopes. In this note, the author rethinks about this metaphor and the relationship between Prometheus and Hermes. He argues that the figure of Hermes as a messenger of the new world presented by the French philosopher, Michel Serres, is opposite to his idea. Serres has no intention of giving conflicting meanings to Hermes. According to Formenti, the choice of putting communication (but not production and industrialism) at the heart of his philosophical thinking is the result of an ethical concept tending to exclude the conflict from the horizon of knowledge
Coco Rebecca Edogamhe: A Very Ordinary Girl
No full textThe work of Coco Rebecca Edogamhe (born 2001) is unique and relevant case study due to three interdependent factors: her young age and short acting experience, which allow us to observe the construction of professional narratives and practices from scratch; her debut in a leading role without prior acting training, which led her to interpret the set as a school; her identity as an Italian of Afro-descent, which places her at the centre of the debate on diversity and representation. While acknowledging her exceptional profile, she also makes a constant shift towards the notion of 'ordinary', proposing a nuanced and everyday model of celebrity, suitable for both television and digital media. Crucial to all this was the casting process, the debut during the Covid-19 pandemic, and her mirroring in the part of summer in 'Summertime' (Netflix 2020-2022). In this essay, press interviews and an in-depth dialogue between the author and the actress will interact diachronically to capture the main trajectories through which Edogamhe negotiated her public identity and began to build her professional culture
Three-dimensional particle-in-cell simulations of laser-driven multiradiation sources based on double-layer targets
No full textDouble-layer targets (DLTs), made of a low-density foam on top of a solid substrate, can efficiently convert the energy of a high-intensity laser to provide sources of photons and protons. We investigate a 30-fs pulse with a peak intensity of I∼8.7×10^(20)W/cm^(2) and a peak power of ∼120 TW interacting with a DLT using three-dimensional (3D) particle-in-cell simulations. We focus on providing quantitative results in full 3D geometry on the foam thickness dependence; on the competition between two photon-generating processes in DLTs, i.e., nonlinear inverse Compton scattering (NICS) and bremsstrahlung (BS); and on the acceleration of protons via enhanced target-normal sheath acceleration. We discuss conversion efficiency, average energy, and angular distributions of such multiradiation sources. We find that NICS can prevail over BS if the DLT's substrate is thin enough (∼μm) and that the optimal foam thickness that maximizes the conversion efficiency in NICS and BS photons and the proton cutoff energy, among those considered, is the same (15μm). These results show that DLTs constitute an excellent tool for developing relatively compact and optimized laser-driven multicomponent radiation sources
Il Monitor Facilitatore: ruolo attivo nella clinical governance e nella creazione di una cultura di farmacovigilanza, intesa come strumento per la tutela della salute pubblica e strategia di razionalizzazione della spesa ospedaliera .
No full textThe constant growth of public health expenditure is mainly due to population aging, scientific
and technological innovation, increasing demand for health. Adverse drug reactions (ADRs) lower
patients quality of life and increase costs of care, mainly in hospitals. Active pharmacovigilance
projects - as already being implemented in the USA - may contribute to cut such avoidable costs.
The present project innovation consists in employing pharmacovigilance as an additional tool to
reduce health expenditure, in a collaborative way. It is therefore necessary - also in our country
- to join resources and competencies at various levels (local, regional, national) to reach the common
target of public health protection. Our project considers 4 phases: fact-finding, engagement
of 8 hospital wards in Verona, expansion at regional level, national expansion. The “Facilitating
Monitor” should be the specific professional figure - funded by the hospital administration -
dedicated to pharmacovigilance at the hospital wards, to monitor and therefore prevent/decrease
ADRs, reducing the resulting length of stay. Prof. Minuz conducted a pivotal study to estimate the
number of ADRs due to medication errors, their causes, the preventability of the ADRs and the
consequent lengths of stay. We used the raw data coming from the study to calculate the costs for
229 in-patients who reported at least one ADR during a 146 days observation period. The total
avoidable cost, due to the increased length of stay for in-patients who experienced at least one
preventable ADR, was € 212,700 i.e. 8% of the hospitalization cost for in-patients who experienced
an ADR and 2% of the total cost of hospitalization. The results were extrapolated to obtain
the total annual saving in Verona university hospitals, which could be around € 8-9 millions
Parametric investigation of laser interaction with uniform and nanostructured near-critical plasmas
No full textAbstract: Laser interaction with uniform and nanostructured near-critical plasmas has been investigated by means of 2D particle-in-cell simulations. The effect of a nanostructure (modeled as a collection of solid-density nanospheres) on energy absorption and radiative losses has been assessed in a wide range of laser intensities (normalized amplitude a0 = 1 - 135) and average densities of the target (electron density ne = 1 - 9nc, where nc is the critical electron density). The nanostructure was found to affect mainly the conversion efficiency of laser energy into ion kinetic energy and radiative losses for the highest simulated intensities
Massively parallel particle-in-cell simulations of laser-plasma interaction : a perfomance analysis
No full textLAUREA MAGISTRALEQuesta tesi riporta un'indagine numerica sulle performance di simulazioni massivamente parallelizzate Particle-In-Cell di interazione laser-plasma in regimi che sono rilevanti nel contesto di accelerazione di particelle tramite laser. Le simulazioni Particle-In-Cell costituiscono lo scenario numerico più largamente adottato per la risoluzione del sistema di Vlasov-Maxwell, ovvero il modello che descrive, con una formulazione di tipo cinetico, la dinamica di un plasma non collisionale relativistico. L'oggetto di studio è costituito da due scenari fisici, simulati in un'ambientazione bidimensionale: un impulso laser superintenso interagisce con un foglio solido sottile o con una porzione spessa di plasma a bassa densità. Queste due configurazioni sono rappresentativi di due casi tipicamente studiati nell'ambito dell'interazione laser-plasma relativistica, ovvero il regime sovra-denso e quello a densità quasi-critica rispettivamente. Tali simulazioni vengono affrontate tramite l'utilizzo di due codici Particle-In-Cel - Smilei e WarpX - caratterizzati da diverse strategie di parallelizzazione. A tal fine si ricorre all'architettura CPU di Galileo, un supercomputer appartenente al centro di calcolo Cineca. Nello specifico, l'aspetto esaminato è il carico computazionale richiesto dalle simulazioni in questione, esplorando il ruolo ricoperto da diversi parametri dei due codici e dalle configurazioni di parallelizzazione. Un'attenzione particolare è riservata allo studio degli approcci di parallelizzazione implementati dai due codici: in particolare, uno studio apposito è dedicato alle strategie di decomposizione del dominio e ai conseguenti effetti sui tempi di simulazioni delle principali routine, che sono analizzate separatamente, in accordo con lo schema dell'algoritmo Particle-In-Cell. Inoltre, uno dei due codici - WarpX - è stato testato anche sul supercomputer ad architettura GPU Marconi100, anch'esso appartenete al Cineca, in modo da considerare anche una parallelizzazione ibrida GPU-CPU. Tali risultati indicano che i benefici derivanti da differenti strategie di parallelizzazione, dipendenti sia dal codice sia dal cluster in questione, possono essere diversi a seconda degli scenari fisici simulati.This thesis reports on a numerical investigation on the performances of massively parallel Particle-In-Cell simulations of laser-plasma interaction in regimes that are relevant in the context of laser-driven particle acceleration. Particle-In-Cell simulations are by far the most established numerical tool for the approximated solution of the Vlasov-Maxwell system, which governs the dynamics of relativistic, collisionless plasmas under a kinetic description. Two physical scenarios are simulated and studied separately in a two-dimensional geometry: a high-power laser pulse interacting with a thin solid foil or a with a low-density thick plasma slab. These two configurations represent two cases-studies of relativistic laser-plasma interaction in the over-critical and near-critical regimes respectively. Two Particle-In-Cell codes - Smilei and WarpX - implementing different parallelization strategies are exploited on the CPU-based cluster Galileo, hosted at Cineca. The computational load required by the simulations is examined, exploring the role of different code parameters and parallel configurations. Special attention is given to the parallelization approaches implemented by the codes, with a particular focus on the domain decomposition strategies, and to the consequential effects on the simulation times of the main routines, which are broken down according to the main building-blocks of a Particle-In-Cell algorithm. Moreover, one of the codes - WarpX - has been tested on the GPU-based cluster Marconi100, hosted at Cineca as well, so that a hybrid GPU-CPU parallelization framework has also been considered. These results indicate that the benefits of different parallelization strategies, both code and cluster dependent, can be different depending on the simulated physical scenarios
Ultra-intense laser interaction with nanostructured near-critical plasmas
No full textNear-critical plasmas irradiated at ultra-high laser intensities (I > 1018W/cm2) allow to improve the performances of laser-driven particle and radiation sources and to explore scenarios of great astrophysical interest. Near-critical plasmas with controlled properties can be obtained with nanostructured low-density materials. By means of 3D Particle-In-Cell simulations, we investigate how realistic nanostructures influence the interaction of an ultra-intense laser with a plasma having a near-critical average electron density. We find that the presence of a nanostructure strongly reduces the effect of pulse polarization and enhances the energy absorbed by the ion population, while generally leading to a significant decrease of the electron temperature with respect to a homogeneous near-critical plasma. We also observe an effect of the nanostructure morphology. These results are relevant both for a fundamental understanding and for the foreseen applications of laser-plasma interaction in the near-critical regime
Comparing Alzheimer’s and Parkinson’s diseases networks using graph communities structure
No full textDatasets: communities, networks, enrichments (ZIP available at https://dx.doi.org/10.6084/m9.figshare.2070124 )
Mandello Much More. Riqualificazione e recupero dell'archeologia industriale riguardante l'area dell'ex vellutificio Redaelli a Mandello del Lario
No full textLAUREA SPECIALISTICA A CICLO UNICOMandello Much More è un nuovo progetto di recupero e di riqualificazione dell’ex area del Vellutificio Redaelli a Mandello del Lario in provincia di Lecco. Il luogo è sicuramente punto di interesse strategico per l’intero centro abitato in quanto posizionato sulle sponde del lago, vicino al centro storico ed all’unico parco urbano presente. Il progetto nasce sia da esigenze comunali nel restituire al pubblico una zona inutilizzata da più di un decennio attraverso nuovi spazi attrattivi necessari alla vita di Mandello, sia dai nostri studi e dalla nostra volontà di ricollegare l’area con il centro abitato.
L’approccio di studio ci ha portato sin da subito al rilievo dello stato di fatto degli edifici e degli esterni, attraverso la strumentazione tradizionale, affiancata da disegni e rilievi già realizzati.
La pianificazione dell’area affronta la tematica della riqualificazione sostenibile attraverso una progettazione sapiente degli spazi a disposizione, in modo da renderli multifunzionali e riutilizzabili in tutte le stagioni; come gli spazi esterni, dove abbiamo voluto mantenere i magnifici giardini della villa “Keller”, ricollegandoli al verde urbano già esistente attraverso una passerella lungolago. Il mix funzionale proposto spazia da luoghi dedicati al reparto turistico ricettivo, ubicati nelle parti storiche della corte, a nuovi spazi di aggregazione, memoria e sport, nei nuovi edifici.
Scendendo nel dettaglio dei nuovi edifici, abbiamo pensato di dare vita ad un nuovo polo attrattivo formato da un nuovo auditorium, un nuovo impianto sportivo per attività natatorie e calcistiche ed infine nuovi spazi polifunzionali dedicati ad attività di gruppo e coworking. Questi ultimi sono connessi attraverso una rete di piazze sia internamente al lotto, sia esternamente con il centro abitato. Essendo gli unici nuovi edifici del lotto, per denunciare la loro presenza abbiamo voluto caratterizzarli attraverso una pelle esterna in lamiera aggraffata.
Per dar vita ad un progetto sostenibile, abbiamo sviluppato diversi studi per fornire ai visitatori un’esperienza confortevole, scegliendo le migliori soluzioni per garantire condizioni climatiche ottimali senza gravare sull’ambiente, lavorando sulla scelta dei materiali e garantendo una produzione di energia pulita attraverso l’utilizzo di fonti rinnovabili come i pannelli fotovoltaici e solari installati sulle coperture, l’inserimento di una sonda geotermica e di un impianto ibrido con caldaia a condensazione.
Nello specifico, in un’ottica di fattibilità del progetto, abbiamo svolto analisi strutturali inerenti alla struttura esistente in acciaio del nuovo spazio museale, verificandola a livello sismico come indicato sulla NTC2018. Avendo voluto mantenere distaccate la struttura esistente del museo con quella nuova dell’auditorium, abbiamo poi verificato anche il martellamento tra le due, per evitare questo effetto che si verifica in ambito sismico.Mandello Much More is a new recovery and redevelopment project of the former Vellutificio Redaelli area, in Mandello del Lario (LC). The place is certainly a strategic point of interest for the entire town because it is located on the shores of the lake, near both the historic center and the unique green park of the city.
The project was born from municipal needs that demanded the return to the public of an area that has not been used for more than a decadeby leveraging new attractive spaces necessary for the life of Mandello; in addition, this project stemmed from our academic studies and our desire to reconnect the area with the town.
A systematicapproach immediately led us to investigate the current situation of the building, through traditional instrumentation, side by side with drawings and historical surveys.
The planning of the area addresses the issue of sustainable redevelopment through a clever design of the space, in order to make them multifunctional and reusable in every season and condition; for example, in the outdoor space, where we wanted to keep the magnificent gardens of the villa “Keller”, with the desire to reconnect them with the existing urban green through a lakeside walkway. The proposed functional mix ranges from places dedicated to the tourist accommodation department, located in the historical part of the courtyard, to new spaces for aggregation, social interaction and sport, ubicated in the new buildings.
Going into the details of the new buildings, we decided to give life to a new attractive pole, consisting of a new auditorium, a new sports center for swimming and football activities and, finally, new multifunctional spaces dedicated to group assets and coworking. A network of squares connects the buildings with each other and with the adjacent town. As they are the sole new buildings in the site, we wanted to characterize them with an external skin in crimped metal sheets to highlight their role.
With the determination to create a sustainable project, we have developed several studies to provide visitors with a comfortable experience, choosing the best solution to ensure optimal climatic conditions without burdening the environment by choosing dedicated sustainable materials and ensuring the production of clean energy through the use of renewable sources such as photovoltaic solar panels installed on the roofs, the inclusion of geothermal probes and a hybrid system with condensing boiler.
Specifically, with a kind eye toward the feasibility of the project, we carried out structural analyzes related to the existing steel structure of the new museum space, verifying it at seismic level as indicated on NTC 2018. Having wanted to keep the existing structure of the museum detached from the new one in the auditorium, we the also verified the lack of hammering between the two to avoid this effect that might occour in a seismic environment
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