1,721,255 research outputs found
Stefani (G.) - Finanziamento e tassazione delle imprese pubbliche in Italia, Francia, Gran Bretagna.
No full textBousquet G.-H. Stefani (G.) - Finanziamento e tassazione delle imprese pubbliche in Italia, Francia, Gran Bretagna.. In: Revue économique, volume 21, n°2, 1970. pp. 327-328
Pompeii geoarchaeological setting – An archive older than 40,000 years of volcanism, soil formation and geoarchaeological landscape
No full textThe present work describes the results of full lithostratigraphic, pedological and geoarchaeological studies carried out
in the Pompeii archaeological area (southern Italy), combined with logs data, surface and underground survey of lava and
tephra outcrops. The ancient Pompeii is probably the most famous and complex site of archaeological investigation in the
world. Through many studies have been devoted to various archaeological aspects, detailed reconstructions of the
geological setting and history of geoarchaeological landscapes are still lacking. At present, Pompeii landscape consists
of low hills recognized as volcanic landforms and attributed to the Somma-Vesuvius volcano activity; they correspond to
ancient local vents covered of a multilayered succession of repeated volcanic deposits and paleosoils, mainly related to
alternating volcanic activity and quiescence periods with consequent pedogenesis (De Maio and Stefani, 2004;
D’Ambrosio et al., 2001; Cinque and Irollo, 2004). This succession comprises at least the last 40,000 years of
sedimentation history, reflecting the entire spectrum of eruption types of the Somma-Vesuvius, i.e. from Plinian to sub-
Plinian eruptions, relatively small eruptions to effusive volcanic events and, on the other hand, soil formations of different
durations, intensities and soil-forming environments. Before the foundation of the city, paleosoils repeatedly reveal clear
evidence of anthropogenic activity, represented by agricultural practices. Once the city has taken to develop,
anthropogenic landscape changes become particularly pronounced. The various periods of edification of the city walls
required different types of land management, related to the variable morphological profiles encountered along of
defensive wall circuit (longer than 3 km). Outcrops were deeply modified with quarries, underground excavations,
earthworks. Several wells were drilled deeper than 20 meters to reach the water table. Two main geological sections,
carried out through the Tempio di Venere and the Regio VIII Insula southern lava cliff, show a core of lavas locally
capping buried deposits of the Campanian Ignimbrite. Geological risk assessment in such a complex archaeological site
needs specific evaluations/methods and flexibility, according to specific conditions and case studies.
Di Maio G. & Stefani G. 2004. Considerazioni sulla linea di costa del 79 d.C. e sul porto dell'antica Pompei. Rivista di studi Pompeiani, L'Erma di
Bretschneider, Roma,14, 141-195.
D’Ambrosio A., Deino A., Di Maio G., Mastroberto M., Melluso L., Morra V., Rota L., Santangelo N., Sperandeo G., Stefani G. 2001. Assetto
geoarcheologico dell’area pompeiana. Nuovi dati per un’ipotesi di ricostruzione paleoambientale”. Pompei e società, Electa, Napoli, 207-208.
Cinque A. & Irollo G. 2004. The “Pompei Volcano”: new geomorphological and stratigraphical data. Il Quaternario, Italian Journal of Quaternary
Science, 17, 101-116
On the monotonicity of perimeter of convex bodies
No full textLet n ≥ 2 and let Φ: Rn → [0, ∞) be a positively 1-homogeneous and convex function. Given two convex bodies A ∪ B in Rn, the monotonicity of anisotropic Φ-perimeters holds, i.e. PΦ(A) ≤ PΦ(B). In this note, we prove a quantitative lower bound on the difference of the Φ-perimeters of A and B in terms of their Hausdorff distance
Generalized Bakry-\'Emery curvature condition and equivalent entropic inequalities in groups
Full text linkWe study a generalization of the Bakry-\'Emery pointwise gradient estimate
for the heat semigroup and its equivalence with some entropic inequalities
along the heat flow and Wasserstein geodesics for metric-measure spaces with a
suitable group structure. Our main result applies to Carnot groups of any step
and to the group.Comment: 76 page
Leibniz rules and Gauss–Green formulas in distributional fractional spaces
Full text linkWe apply the results established in [12] to prove some new fractional Leibniz rules involving BVα,p and Sα,p functions, following the distributional approach adopted in the previous works [8,13,14]. In order to achieve our main results, we revise the elementary properties of the fractional operators involved in the framework of Besov spaces and we rephraze the Kenig–Ponce–Vega Leibniz-type rule in our fractional context. We apply our results to prove the well-posedness of the boundary-value problem for a general 2α-order fractional elliptic operator in divergence form
On the N-Cheeger problem for component-wise increasing norms
Full text linkWe study Cheeger and p-eigenvalue partition problems depending on a given evaluation function Φ for p∈[1,∞). We prove existence and regularity of minima, relations between the problems, convergence, and stability with respect to p and to Φ
Marmorari lombardi in Sardegna tra Settecento e Ottocento
No full textLa relazione Marmorari lombardi in Sardegna tra Settecento e Ottocento, per il convegno Barocco lombardo/Barocco europeo (1990), pubblicata nel 1991 su “Arte Lombarda”, mette in luce l’origine lombarda delle maestranze attive in Sardegna nel tardo Settecento, specializzate nella realizzazione di altari e arredi in marmi policromi intarsiati, che subentrano a quelle liguri mantenendo tuttavia rapporti commerciali e culturali con Genova. Accurate indagini archivistiche focalizzano l’identità anagrafica di vari esponenti delle famiglie Spazzi e Franco e le loro reciproche parentele
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