1,721,016 research outputs found
Silio Italico, Punica IX: commento ai vv. 1-469
No full textLa tesi di dottorato è costituita da un commento ai vv. 1-469 del nono libro dei Punica di Silio Italico. Il commento si divide in due corpi: ogni ampio segmento narrativo in cui il testo poetico si articola è introdotto da una sezione in cui si dà riassunto dei contenuti e si anticipano i principali materiali intertestuali e intratestuali; a queste introduzioni segue l’analisi lemmatica, dove sono messi in luce aspetti di lingua, stile e prosodia e sono approfondite le specifiche componenti dotte. Il commento è fornito di una introduzione generale, in cui si evidenzia la struttura del libro, la sua funzione e posizione nell’architettura del poema, la rielaborazione delle fonti storiche e dei modelli letterari (con particolare attenzione all’importanza del precedente lucaneo) e, infine, la caratterizzazione dei principali personaggi di parte romana, Varrone, Paolo e Scipione.
The dissertation provides a commentary of Silius Italicus’ Punica Book 9, 1-469. The commentary is made up of two parts: every unit of the poetic narrative is presented by an introductory section, which contains both a summary of the narration and a preview of the main inter- and intratextual features; an ad locum commentary follows, which focuses on linguistic, stylistic and prosodic aspects, dealing with specific literary issues as well. A general overview is also provided, which tackles the book’ structure, its function and position in the overall architecture of the poem, the reworking of sources and poetic models (especially Lucan), and eventually the characterization of Varro, Paulus and Scipio
Scaevola’s aristeia: A Complementary Reworking of a Historical Source and Epic Tradition
No full textQuesto studio analizza la figura di Gaio Mucio Scevola nell'opera di Silio Italico, esaminando come l'autore rielabora la tradizione storica ed epica. L'articolo si concentra in particolare sull'episodio di Scevola nel libro IV del Punicum, evidenziando come Silio Italico utilizza il personaggio per affrontare temi chiave come il valore romano, il sacrificio per la patria e la gloria attraverso la morte. L'analisi mette in luce le interazioni intertestuali con altri autori come Virgilio e Lucano, dimostrando come Silio Italico si inserisce in un dialogo continuo con la tradizione letteraria latina. Si esplora, inoltre, come l'episodio di Scevola contribuisca alla rappresentazione della guerra annibalica e della resilienza romana di fronte alle avversità. Lo studio offre una nuova interpretazione della figura di Scevola nel contesto dell'epica siliana, sottolineando la sua rilevanza per la comprensione dei valori e delle ideologie dell'epoc
Visible and Infra-red Light Emission in Boron-Doped Wurtzite Silicon Nanowires
Full text linkSilicon, the mainstay semiconductor in microelectronic circuitry, is considered unsuitable for optoelectronic applications owing to its indirect electronic band gap, which limits its efficiency as a light emitter. Here we show the light emission properties of boron-doped wurtzite silicon nanowires measured by cathodoluminescence spectroscopy at room temperature. A visible emission, peaked above 1.5 eV, and a near infra-red emission at 0.8 eV correlate respectively to the direct transition at the Γ point and to the indirect band-gap of wurtzite silicon. We find additional intense emissions due to boron intra-gap states in the short wavelength infra-red range. We present the evolution of the light emission properties as function of the boron doping concentration and the growth temperature
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
Periodic Structural Defects in Graphene Sheets Engineered via Electron Irradiation
Full text linkArtificially-induced defects in the lattice of graphene are a powerful tool for engineering the properties of the crystal, especially if organized in highly-ordered structures such as periodic arrays. A method to deterministically induce defects in graphene is to irradiate the crystal with low-energy (<20 keV) electrons delivered by a scanning electron microscope. However, the nanometric precision granted by the focused beam can be hindered by the pattern irradiation itself due to the small lateral separation among the elements, which can prevent the generation of sharp features. An accurate analysis of the achievable resolution is thus essential for practical applications. To this end, we investigated patterns generated by low-energy electron irradiation combining atomic force microscopy and micro-Raman spectroscopy measurements. We proved that it is possible to create well-defined periodic patterns with precision of a few tens of nanometers. We found that the defected lines are influenced by electrons back-scattered by the substrate, which limit the achievable resolution. We provided a model that takes into account such substrate effects. The findings of our study allow the design and easily accessible fabrication of graphene devices featuring complex defect engineering, with a remarkable impact on technologies exploiting the increased surface reactivity
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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