1,720,990 research outputs found
Boundary heterogeneities in thermal convection: Urban Heat Islands and the Rayleigh-Bénard problem
Full text linkL'abstract è presente nell'allegato / the abstract is in the attachmen
Maddalena Bassani & Francesca Ghedini (a cura di), Religionem significare. Aspetti storico-religiosi, strutturali, iconografici e materiali dei sacra privata. Atti dell’Incontro di Studi (Padova, 8-9 giugno 2009), 2011
No full textRaepsaet-Charlier Marie-Thérèse. Maddalena Bassani & Francesca Ghedini (a cura di), Religionem significare. Aspetti storico-religiosi, strutturali, iconografici e materiali dei sacra privata. Atti dell’Incontro di Studi (Padova, 8-9 giugno 2009), 2011. In: L'antiquité classique, Tome 82, 2013. pp. 431-433
Maddalena Bassani & Francesca Ghedini (a cura di), Religionem significare. Aspetti storico-religiosi, strutturali, iconografici e materiali dei sacra privata. Atti dell’Incontro di Studi (Padova, 8-9 giugno 2009), 2011
No full textRaepsaet-Charlier Marie-Thérèse. Maddalena Bassani & Francesca Ghedini (a cura di), Religionem significare. Aspetti storico-religiosi, strutturali, iconografici e materiali dei sacra privata. Atti dell’Incontro di Studi (Padova, 8-9 giugno 2009), 2011. In: L'antiquité classique, Tome 82, 2013. pp. 431-433
Impact of different external parameters on Turin UHI with COSMO at 1km
Full text linkIn an increasingly urbanized world, the numerical weather prediction models need to better represent the urban areas, in order to capture the micro-climate phenomena induced by the cities. The parameterization TERRA_URB (TU) (Wouters et al., 2016), recently implemented in COSMO (Bucchignani et al., 2019), not only represents a novelty in this field but has proved to correctly reproduce the Urban Heat Island effect over different European cities (Garbero et al., 2021). TU provides a heterogeneous description of the urban-atmosphere interactions, through the definition of several urban external parameters, such as the anthropogenic heat flux (AHF), the impervious surface area fraction (ISA), and other urban canopy parameters such as the building area fraction (BF), the mean building height (H) and the height-to-width ratio (H/W).
In this study we performed simulations with COSMO model at 1 km resolution with the aim of a better characterization of the UHI over the city of Turin. In particular, we compared the results by using AHF and ISA from the EXTPAR preprocessor and from the Local Climate Zones (LCZ) classification system (Stewart and Oke, 2012).
Furthermore, we focused on the influence of the urban parameters BF, H and H/W by comparing two different approaches: as a default, their values are assumed constant for all the urban grid points, while a different 2-D approach consists in deriving their values for each urban grid point based on LCZ classification (Demuzere et al., 2019).
A sensitivity analysis was then performed to detect which of the 2-D urban parameters have a greater impact on the results, with an emphasis on the Surface Energy Balance (SEB). With the purpose of unravelling the driving mechanism behind the UHI, we analyzed the individual SEB components and evaluated how much each flux contribute to the urban heat island effect
Termalismo e società
No full textBasandosi sulle fonti letterarie ed epigrafiche e sui rinvenimenti archeologici il contributo riflette sugli aspetti sociali del termalismo, al fine di capire ceto di appartenenza, possibilità economica e luogo di provenienza dei frequentatori delle stazioni termali dell’Italia romana. Ne emerge un’immagine varia e diversificata, dove alcuni centri, quali in primis l’area flegrea e la zona di Vicarello, godevano di ampia fama e potere attrattivo, altri invece erano noti solo a livello locale: la vicinanza a Roma e la frequentazione o forse anche la gestione diretta dell’imperatore sembrano aver avuto una ruolo importante in questi diversi gradi di notorietà. Lo sfruttamento a fini medici e/o cultuali delle aquae salutiferae fra il I e il II sec. d.C. e talora fino al V-VI non rimase, comunque, una prerogativa solo delle classi più alte, ma si aprì anche ai ceti medio-bassi e alle donne, per quanto la documentazione sui personaggi di rango sia più numerosa rispetto a quella sui “curisti” di umile origine
Tra uomo e natura: insediamenti e paesaggi termali
No full textMettendo in luce gli aspetti connessi alle risorse sfruttate e alle tipologie insediamentali e strutturali il contributo mira ad analizzare come nell'Italia antica i Romani abbiano avuto modo di rapportarsi in maniera polisemica e mutifunzionale al termalismo
Unexpected Transient Dynamics of Meandering Rivers With Unsteady Flows
Full text linkRiver meandering dynamics are here explored in light of unsteady water flows. While mathematical models have usually focused on constant discharges—a reasonable and widely adopted approach for long-term considerations—we show that varying flows strongly affect the short-term planimetric evolution of meanders, before the cutoff occurrence. In particular, flow variability slows down the meanders' dynamics while does not significantly influence the wavelength selection. We support our arguments with numerical simulations and theoretical (linear and nonlinear) analyses, showing that an interplay between out-of-phase river geometry and flow is responsible for the meander-dynamics slowdown. Our results suggest that accounting for flow variability is critical in assessing yearly to decadal meander dynamics with important implications for river engineering and management strategies.CHANG
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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