1,721,048 research outputs found
La “città dei matti”: internamento coatto, cura e riabilitazione in un caso esemplare. Il polo di Santa Maria Maddalena nello sviluppo urbano di Aversa, in M. Morandotti, M. Savorra (a cura di), La città e la cura. Spazi, istituzioni, strategie, memoria / The city and healthcare. Space, Institutions, Strategies, Memory
No full textDIGITAL MODELS FOR DECISION SUPPORT IN THE FIELD OF ENERGY IMPROVEMENT OF UNIVERSITY BUILDINGS
No full textAccording to the most recent provisions of the European Union, public buildings should play an exemplary role in sustainable development, adopting accelerated renovation rates aimed at improving their energy
performance. Within this category, university buildings are a case study of great interest to experiment with new approaches for energy refurbishment and sustainable management of architectural assets. The research presents a workflow that originates from easily available input data, to reach the definition of a multi-scale spatial database, founded on the synergy between GIS (Geographic Information System) and BIM (Building Information Modeling) and defined according to standard and shared data models. Tools of this kind are crucial for promoting efficient information management building assets, by organizing data into navigable three-dimensional models. In addition to the clear benefits associated with structured archiving, the provision of a relational database makes it possible to capitalize on the already available knowledge and to activate decision support tools for comparative assessment of transformation scenarios. In particular, the use of the cost-optimal methodology is proposed: it is a multi-criteria assessment aimed at identifying a set of optimal energy refurbishment solutions concerning energy consumption and management costs. The paper presents the methodological framework and examines its application at different scales, from the case of the University of Pavia real estate asset to the application to a single building complex
La città e la cura. Spazi, istituzioni, strategie, memoria / The city and healthcare. Spaces, Institutions, Strategies, Memory
No full textLa città è stata da sempre luogo privilegiato delle cure mediche, sebbene sia stata percepita in alcuni momenti storici anche come luogo dove il corpo si ammalava; di contro, essa ha elaborato strumenti e spazi idonei in cui trovare i rimedi alle malattie. Cambiamenti politici, istituzionali, culturali e scientifici hanno determinato nelle città antichi e nuovi spazi destinati alle terapie e al benessere. Da religiose a scientifiche, la visione e l’organizzazione della cura come tema sociale e culturale hanno generato – nelle diverse epoche – modi, strategie, pratiche e consuetudini che hanno influito alla grande scala della storia urbana, così come sugli sviluppi e sulle trasformazioni dei diversi luoghi deputati nelle città, o alternativamente estromessi al di fuori del contesto cittadino.
Sono qui raccolti parte dei contributi rielaborati dopo il convegno internazionaleorganizzatodall’UniversitàdiPaviaedell’AssociazioneItaliana di Storia Urbana nel settembre 2020. I temi spaziano da questioni connesse alle cure a elementi spaziali e distributivi o tipologie architettoniche, da pratiche sociali, culturali, istituzionali e amministrative nella gestione ordinaria e straordinaria all’impatto su quartieri o aree urbane specializzate. I saggi nel loro complesso fanno emergere diverse forme di attenzione e concezione delle cure – analizzate nei momenti della prevenzione, delle terapie, delle urgenze e della degenza, sino alla riabilitazione – nelle diverse epoche e in diversi contesti geografici e culturali in relazione alla storia urbana
Mean-field analysis of multipopulation dynamics with label switching
Full text linkThe mean-dield analysis of a multipopulation agent-based model is performed. The model couples a particle dynamics driven by a nonlocal velocity with a Markov-type jump process on the probability that each agent has of belonging to a given population. A general functional analytic framework for the well-posedness of the problem is established, and some concrete applications are presented, both in the cases of a discrete and continuous set of labels. In the particular case of a leader-follower dynamics, the existence and approximation results recently obtained in [G. Albi et al., Math. Models Methods Appl. Sci., 29 (2019), pp. 633{679] are recovered and generalized as a byproduct of the abstract approach proposed
La città e la cura: spunti di riflessione tra ricerca storica e intreccio dei saperi / Cities and Care: Elements for a reflection between historical research and intertwining of knowledge
No full textDiscrete-to-continuum limits of particles with an annihilation rule
Full text linkIn the recent trend of extending discrete-to-continuum limit passages for gradient flows of single-species particle systems with singular and nonlocal interactions to particles of opposite sign, any annihilation effect of particles with opposite sign has been sidestepped. We present the first rigorous discrete-to-continuum limit passage which includes annihilation. This result paves the way to applications such as vortices, charged particles, and dislocations. In more detail, the discrete setting of our discrete-to-continuum limit passage is given by particles on the real line. Particles of the same type interact by a singular interaction kernel; those of opposite sign interact by a regular one. If two particles of opposite sign collide, they annihilate; i.e., they are taken out of the system. The challenge for proving a discrete-to-continuum limit is that annihilation is an intrinsically discrete effect where particles vanish instantaneously in time, while on the continuum scale the mass of the particle density decays continuously in time. The proof contains two novelties: (i) the observation that empirical measures of the discrete dynamics (with annihilation rule) satisfy the continuum evolution equation that only implicitly encodes annihilation and (ii) the fact that, by imposing a relatively mild separation assumption on the initial data, we can identify the limiting particle density as a solution to the same continuum evolution equation
A model for the quasistatic growth of cracks with fractional dimension
Full text linkWe study a variational model for the quasistatic growth of cracks with fractional dimension in brittle materials. We give a minimal set of properties of the collection of admissible cracks which ensure the existence of a quasistatic evolution. Both the antiplane and the planar cases are treated
The energy-oriented management of public historic buildings: An integrated approach and methodology applications
Full text linkIn the European framework, there is a strong drive to develop integrated approaches aimed at understanding and improving the energy behavior of public historic buildings within urban contexts. However, the examples already provided tend to address the issue from mono-disciplinary perspectives, losing the opportunity for a coordinated view. The research suggests a methodology to reach the definition of a three-dimensional database, which incorporates spatial models and energy information, with the final goal of merging heterogeneous information that is useful to interpret the overall framework and to design sustainable development scenarios. The platform achieves GIS (Geographic Information System) and BIM (Building Information Modeling) integration by using the CityGML data model, for supporting multi-scale analyses without break of continuity, ranging from urban to building level. The discussion combines the applicative case with the theoretical background, deepening the role of a solid knowledge framework as a basis for sustainable interventions on public historic buildings. To better explain and test the methodology, a case study on the University built heritage of Pavia is presented and three possible outputs deriving from the database are discussed. The example demonstrates the strength of the approach, which is able to provide a variety of results coming from a unique source of information, ensuring coherence and unambiguousness at all levels of investigation
Castiglioni Chapel in Pavia: A methodological approach for documentation and virtualisation techniques
No full textIn the reuse project of an environment, in order to define the set of residual services provided by the building organization as a whole, both spatial and material analyses of the current state need to be paired with a survey of both environmental and technological systems. In the case study of the Castiglioni Chapel, it is also essential to associate the various diagnostic outputs with the survey, in order to plan specific interventions for the site management project. The presented survey methodology targets the analysis of the alterations and evident cracks in the intrados of the vault. AR/VR systems allow to enhance the representation of the proposed reuse of the Chapel. All the aforementioned are aimed at devising a function that makes the space as a place of knowledge and digital use of the Chapel
Global minimizers for axisymmetric multiphase membranes
No full textWe consider a Canham-Helfrich-type variational problem defined over closed surfaces enclosing a fixed volume and having fixed surface area. The problem models the shape of multiphase biomembranes.
It consists of minimizing the sum of the Canham-Helfrich energy, in which the bending rigidities and spontaneous curvatures are now phase-dependent, and a line tension penalization for the phase interfaces. By restricting attention to axisymmetric surfaces and phase distributions, we extend our previous results for a single phase (R. Choksi and M. Veneroni, Global minimizers for the doubly-constrained Helfrich energy: the axisymmetric case. Calc. Var. Partial Differential Equations, 2012. DOI: 10.1007/s00526-012-0553-9) and prove existence of a global minimizer
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