3,227 research outputs found

    Sulla nuova edizione del «Giornale di guerra e di prigionia», «Il castello di Udine» e altre questioni gaddiane

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    Il saggio prende in esame la recente edizione del Giornale di guerra e di prigionia di Carlo Emilio Gadda (Adelphi 2023), a cura di Paola Italia, mettendone in luce le novità e le differenze rispetto al testo critico procurato da Dante Isella (Garzanti 1992). I quaderni riemersi nel 2019, redatti da Gadda nel novembre-dicembre 1918 durante la prigionia a Celle Lager, rivelano dati cruciali sul suo rapporto conflittuale con Ugo Betti e sulle connessioni tra il Giornale e le prose belliche del Castello di Udine (Edizioni di Solaria 1934).   Delving Into the New Edition of Carlo Emilio Gadda’s “Giornale di guerra e di prigionia”and its Relation to “Il castello di Udine” and Other Works The essay examines the latest edition of Carlo Emilio Gadda’s Giornale di guerra e di prigionia (Adelphi 2023), edited by Paola Italia, highlighting its innovations and differences compared to the critical text provided by Dante Isella (Garzanti 1992). The notebooks, unearthed in 2019 and penned by Gadda during his imprisonment in Celle Lager in November-December 1918, unveil crucial insights into his conflicted relationship with Ugo Betti and the interrelations between the Giornale and the war-related prose later collected in Il castello di Udine (Edizioni di Solaria 1934)

    Tra permanenza e successione: il tempo nella prima Critica di Kant

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    The present work is focused on a specific question: is time permanent or not in Kant’s first Critique? I tried to find out my answer on the papers written by authors from Anglo-American tradition, who don’t seem so interested in this topic. Indeed, the former problem was to find remarks about it. Then I highlighted two different points of view: ones think that time is permanent. They tried to warrant this, using especially what Kant says about it in the second edition section dedicated to first Analogy. Others think that time flows, in particular when it’s considered as medi- ate external sense. Finally, I tried to explain why, on my point of view, it’s possible to find in Kant this two contrary position and how it is possible to get out from this situation

    Weighted reduced order methods for parametrized partial differential equations with random inputs

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    In this manuscript we discuss weighted reduced order methods for stochastic partial differential equations. Random inputs (such as forcing terms, equation coefficients, boundary conditions) are considered as parameters of the equations. We take advantage of the resulting parametrized formulation to propose an efficient reduced order model; we also profit by the underlying stochastic assumption in the definition of suitable weights to drive to reduction process. Two viable strategies are discussed, namely the weighted reduced basis method and the weighted proper orthogonal decomposition method. A numerical example on a parametrized elasticity problem is shown

    Discovery of a radio relic in the low mass, merging galaxy cluster PLCK G200.9-28.2

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    Radio relics at the peripheries of galaxy clusters are tracers of the elusive cluster merger shocks. We report the discovery of a single radio relic in the galaxy cluster PLCK G200.9-28.2 (z=0.22z=0.22, M500=2.7±0.2×1014MM_{500} = 2.7\pm0.2 \times 10^{14} M_{\odot}) using the Giant Metrewave Radio Telescope at 235 and 610 MHz and the Karl G. Jansky Very Large Array at 1500 MHz. The relic has a size of 1×0.28\sim 1 \times 0.28 Mpc, an arc-like morphology and is located at 0.9 Mpc from the X-ray brightness peak in the cluster. The integrated spectral index of the relic is 1.21±0.151.21\pm0.15. The spectral index map between 235 and 610 MHz shows steepening from the outer to the inner edge of the relic in line with the expectation from a cluster merger shock. Under the assumption of diffusive shock acceleration, the radio spectral index implies a Mach number of 3.3±1.83.3\pm1.8 for the shock. The analysis of archival XMM Newton data shows that PLCK G200.9-28.2 consists of a northern brighter sub-cluster, and a southern sub-cluster in a state of merger. This cluster has the lowest mass among the clusters hosting single radio relics. The position of the Planck Sunyaev Ze'ldovich effect in this cluster is offset by 700 kpc from the X-ray peak in the direction of the radio relic, suggests a physical origin for the offset. Such large offsets in low mass clusters can be a useful tool to select disturbed clusters and to study the state of merger.Comment: 10 pages, 7 figures, 4 tables. Accepted for publication in MNRA