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  • Publication . Part of book or chapter of book . 2021
    Open Access
    Authors: 
    Andrea Simoncini; Erik Longo;
    Publisher: Cambridge University Press
    Country: Italy
  • Publication . Part of book or chapter of book . 2021
    Open Access
    Authors: 
    Mauro Agnoletti; Antonio Santoro;
    Publisher: Springer
    Country: Italy
  • Open Access
    Authors: 
    Federico Becattini; Xuemeng Song; Claudio Baecchi; Shi-Ting Fang; Claudio Ferrari; Liqiang Nie; Alberto Del Bimbo;
    Publisher: Association for Computing Machinery
    Country: Italy
  • Publication . Conference object . Article . 2021
    Open Access
    Authors: 
    Follesa, S.; Cesaretti, S.; Armato, F.;
    Publisher: International Institute of Informatics and Cybernetics
    Country: Italy

    In a scene radically varied by the effects of the pandemic, a reflection opens on which guidelines and methods should turn today educational research, an area no less spared, which also manifests the fragility of a system made of static habits. The knowledge of how design originates from the ability to adapt to the changes of a society in continuous evolution, in which modernity has however unquestionably marked the loss of forms built over the centuries, implementing a radical break with the past. Investigating the variations of teaching through the comparison between historical models and new tools and processes of the digital age, the paper questions the concept of form, proper to the design project but also immaterial tool of culture, a means of coexistence and a place of mutual exchange, to define the changeability we are witnessing in the transition from classrooms to home desks. In fact, it is increasingly necessary to re-establish relations between the parties involved, to restore a communicative capacity that knows how to overcome difficulties and fears in the awareness that, as in the most famous physical law, nothing is created or destroyed, but it only changes in its form.

  • Publication . Preprint . Article . Conference object . 2021
    Open Access English
    Authors: 
    Benedikt Ahrens; Dan Frumin; Marco Maggesi; Niccolò Veltri; Niels van der Weide;
    Countries: Netherlands, Netherlands, Italy

    We develop bicategory theory in univalent foundations. Guided by the notion of univalence for (1-)categories studied by Ahrens, Kapulkin, and Shulman, we define and study univalent bicategories. To construct examples of univalent bicategories in a modular fashion, we develop displayed bicategories, an analog of displayed 1-categories introduced by Ahrens and Lumsdaine. We demonstrate the applicability of this notion, and prove that several bicategories of interest are univalent. Among these are the bicategory of univalent categories with families and the bicategory of pseudofunctors between univalent bicategories. Furthermore, we show that every bicategory with univalent hom-categories is weakly equivalent to a univalent bicategory. All of our work is formalized in Coq as part of the UniMath library of univalent mathematics. v1: 16 pages; v2: Veltri added as coauthor, extended version, 32 pages, list of changes given in Section "Publication history"; v3: final journal version to be published in Mathematical Structures in Computer Science; v4: fixed some typos that remain in the MSCS version

  • Publication . Article . Conference object . 2021
    Open Access
    Authors: 
    Claudio Zanirato;
    Publisher: International Experts for Research Enrichment and Knowledge Exchange (IEREK)
    Country: Italy

    New mobility does not just mean technological innovation, but also a change in lifestyles, modes of transport and services, ways of doing business and governance of the common good, represented by urban space and service infrastructures. Just as the car shaped the city of the 20th century with all its distortions, the new mobility systems of the current millennium could redefine the use of urban space with a new, more balanced footprint. The new mobility could drastically reduce the total number of vehicles in circulation (with their interchange and continuous use) and free up large areas of the city, for example parking spaces, which could be used for other purposes, and car service areas, which could be used as widespread freight delivery hubs.In this scenario, motorway service stations would become more similar to interports, exchange points serving not only travelers but also and primarily segments of metropolitan areas, small cities and territorial areas of influence, creating a system of "cells" of relevance.Today, therefore, there is growing awareness that new mobility also requires a different approach to the city and its design, given that the electrical infrastructure contributes to the (re)definition of urban space.For this reason, cities must change their approach and make use of technology to understand where and how to intervene, with the primary objective of restituting the space taken up by the streets, which were designed for cars, to citizens and their expanded needs. New electric, as well as connected, shared and multimodal mobility is in fact an integral part of the new cities being built.More consolidated cities will also obtain substantial benefits: a case study applied to the entire urban area of Florence demonstrates the potential of this revolution which is already underway. 

  • Closed Access English
    Authors: 
    Roberto Meloni; S. Gori; Antonio Andreini; Pier Carlo Nassini;
    Country: Italy

    Abstract The present paper summarizes the development of a Large-Eddy Simulation (LES) based approach for the prediction of CO emission in an industrial gas turbine combustor. Since the operating point of the modern combustors is really close to the extinction limit, the availability of a tool able to detect the onset of high-CO production can be useful for the proper definition of the combustion chamber air split or to introduce design improvements for the premixer itself. The accurate prediction of CO cannot rely on the flamelet assumption, representing the fundament of the modern combustion models. Consequently, in this work, the Extended Turbulent Flame Speed Closure (ETFSC) of the standard Flamelet Generated Manifold (FGM) model is employed to consider the effect of the heat loss and the strain rate on the flame brush. Moreover, a customized CO-Damköhler number is introduced to de-couple the in-flame CO production region from the post-flame contribution where the oxidation takes place. A fully premixed burner working at representative values of pressure and flame temperature of an annular combustor is selected for the validation phase of the process. The comparison against the experimental data shows that the process is not only able to capture the trend but also to predict CO in a quantitative manner. In particular, the interaction between the flame and the air fluxes at some critical sections of the combustor, leading the CO emission from the equilibrium value to the super-equilibrium, has been correctly reproduced.

  • Open Access
    Authors: 
    Brita, Antonella; Janina, Karolewski;
    Publisher: De Gruyter
    Country: Italy
  • Publication . Conference object . Other literature type . 2021
    Open Access English
    Authors: 
    Lenti, Massimo; Ruggiero, Giuseppe; Bucci, Francesca; Latino, Giuseppe;
    Country: Italy

    The NA62 experiment at CERN SPS designed to measure the branching ratio of the ultra-rare $K^+ \rightarrow \pi^+ \nu \bar{\nu}$ decay using a decay-in-flight technique, collected data from 2016 to 2018. The analysis of the full 2018 data set is presented here, corresponding to a total number of kaon decays of about $2.62\times10^{12}$ , the largest data set so far collected. The combination with 2016-2017 data set is also reported. In addition the latest results from other searches are briefly presented.

  • Open Access
    Authors: 
    Carlo Colombo; Marco Fanfani;
    Publisher: IEEE
    Country: Italy
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