Vix sibi credere. Appunti per la storia di un topos

A partire dall'episodio odissiaco in cui il protagonista, riportato a Itaca dai Feaci, non riconosce la terra natìa, viene analizzato il motivo del "non credere ai propri occhi" in diversi autori latini come Catullo, Plauto, Seneca e altri

Eugenio Montale o della classicità senza classicismo

Motivi 'classici' nella poesia di Montale, con particolare riferimento al rapporto intertestuale fra "La casa dei doganieri" e l'ode 1, 11 di Orazio

Non est pura voluptas. Fisiologia e psicopatologia dell’amplesso in Kafka e Lucrezio

Due brani del romanzo di Kafka Il castello descrivono gli amplessi del protagonista K. con una servetta dell’ostello presso cui egli si trova ospitato. Le due scene e le espressioni usate dallo scrittore per descriverle rimandano a due noti brani del De rerum natura di Lucrezio. Non è facile stabilire se si tratti di una ripresa consapevole (l’“arte allusiva” di Pasquali) o di una semplice reminiscenza, ma la circostanza costituisce in ogni caso la testimonianza di un’affinità spirituale fra i due autori.Two passages from Kafka's novel The Castle describe the embraces of the protagonist K. with a servant of the hostel where he is staying. The two scenes and the expressions used by the writer to describe them refer to two well-known passages from Lucretius's De rerum natura. It is not easy to determine whether it is a conscious revival (Pasquali's "allusive art") or a simple reminiscence, but the circumstance constitutes in any case the testimony of a spiritual affinity between the two authors

La cetra e il canto. Antologia della lirica greca

Autori della lirica greca monodica e corale, tradotti in versi italiani (con testo a fronte, introduzioni e note

Achilleide

Introduzione, testo critico, traduzione e note di commento all'Achilleide di Stazi

Analysis of Voltage Distribution and Connections within a High-Frequency Hairpin Winding Model

In the last years the adoption of hairpin windings is increasing, especially in the automotive sector, mainly due to their inherently high fill factor and electric loading capability. A critical aspect related to the reliability and lifetime of every winding typology is the voltage stress due to the uneven voltage distribution. This phenomenon has already been largely analyzed in conventional stranded conductors, while a few studies are available for hairpin windings. With the spreading of wide bandgap devices, the investigation on voltage distribution becomes an ever-timely topic due to their short rise times. This paper presents an analysis of the uneven voltage distribution triggered within hairpin windings by a low rise time waveform, using a complete high-frequency winding model. The different options to series-connect different paths are investigated, providing simple but essential guidelines to reduce the electrical stress within hairpin windings. © 20XX IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other worksThis paper reflects only the author's view. JU is not responsible for any use that may be made of the information it contains

A user experience analysis for a mobile Mixed Reality application for cultural heritage

Mixed Reality has emerged as a valuable tool for the promotion of cultural heritage. In this context, in particular, the metaphor of virtual portals allows the virtual visit of monuments that are inaccessible or no longer exist in their original form, integrating them into the real environment. This paper presents the development of a Mixed Reality mobile application that proposes a virtual reconstruction of the church of Sant’Elia in Ruggiano, in the southern province of Lecce (Italy). By placing the virtual portal in the same place where the entrance of the church was located, the user can cross this threshold to enter inside and make a virtual journey into the past. The user experience was evaluated by administering a questionnaire to 60 users who tried the application. From the data collected, four user experience factors were identified (interest, focus of attention, presence and usability), which were compared between young and old, male and female users, and between users who had already visited the church in person and all other users. In general, the scores reveal a total independence of the other three factors from usability and a very high level of interest

Partial Discharges in Electrical Machines for the More Electric Aircraft—Part I: A Comprehensive Modeling Tool for the Characterization of Electric Drives Based on Fast Switching Semiconductors

This paper proposed a modelling approach for the comprehensive analysis of high-frequency challenges in electrical drives designed for aerospace applications, in particular the overvoltage at the machine terminals and the voltage distribution within windings. After a separate description of the models for the estimation of these insulation stress sources, the combined model was detailed. The main benefit of developing a combined, flexible and comprehensive tool is that both overvoltage at machine terminals and uneven voltage distribution can be calculated simultaneously, without neglecting the voltage overshoot when estimating the voltage distribution (and vice versa). In fact, an accurate calculation of the terminal overvoltage is necessary to provide a good estimation of the voltage within winding turns since its waveform shape can be quite different with respect to the converter output, even with cables of a few meters. A case study based on a real aerospace application was considered to investigate the model validity and accuracy. Experimental results were performed on a complete system comprising a SiC-based converter, a connecting cable and a machine stator, proving the simulation model accuracy in terms of peak voltages of both the line-to-line terminal voltage and the turn voltage distribution across the first turns, which are the most relevant quantities for the sake of this study as well as for the investigations of the subsequent companion papers. In the forthcoming papers, the effects of different rise times and cable lengths on the inception of partial discharges will be investigated through fast parametric simulation carried out using the proposed combined model. The feasibility of using conventional insulation systems for aircraft applications using SiC drives fed by a ±270 V DC bus voltage will be discussed, with the aim of signaling and finding solutions to improve the overall reliability

A multi-service data management platform for scientific oceanographic products

Abstract. An efficient, secure and interoperable data platform solution has been developed in the TESSA project to provide fast navigation and access to the data stored in the data archive, as well as a standard-based metadata management support. The platform mainly targets scientific users and the situational sea awareness high-level services such as the decision support systems (DSS). These datasets are accessible through the following three main components: the Data Access Service (DAS), the Metadata Service and the Complex Data Analysis Module (CDAM). The DAS allows access to data stored in the archive by providing interfaces for different protocols and services for downloading, variables selection, data subsetting or map generation. Metadata Service is the heart of the information system of the TESSA products and completes the overall infrastructure for data and metadata management. This component enables data search and discovery and addresses interoperability by exploiting widely adopted standards for geospatial data. Finally, the CDAM represents the back-end of the TESSA DSS by performing on-demand complex data analysis tasks