Università del Salento: ESE - Salento University Publishing
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Gold Nanoparticles from Laurus Nobilis Leaves Extract as radiosensitizing tools in Breast Cancer Cells
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Balancing performance and environmental efficiency: a multiclass classification study of textual data
Get PDFThis study evaluates Multiclass classification (MCC) strategies -- One-Vs-Rest (OVA), One-Vs-One (OVO), Best-of-Best (BOB), and Error-Correcting-Output-Codes (ECOC) -- using classifiers like Naïve Bayes, Random Forest, Linear Discriminant Analysis, Logistic Regression, Neural Networks, Support Vector Machine, and Threshold-based Naïve Bayes on the 20NewsGroup text dataset, well known in literature for its complexity. Findings shows that the choice of classifier significantly affects accuracy and computational effort. Threshold-based Naïve Bayes excels with OVO, OVA, and BOB but declines with ECOC. Artificial Neural Network and Random Forest, which are slowest, align well with BOB and OVA respectively. In contrast, Naïve Bayes and Logistic Regression stand out for speed, particularly with OVA. Along with the Support Vector Machine, these classifiers demonstrate versatility across all strategies, balancing accuracy and training time. Additionally, OVO and BOB prove to be advantageous for handling unbalanced data, by focusing on individual class pairings. OVA emerges as the fastest strategy, while ECOC's performance is classifier-dependent. Our analysis underscores the importance of selecting the appropriate classifier and strategy pairing in MCC tasks, particularly in imbalanced datasets. Importantly, this study underlines the environmental impact of computational choices, advocating for efficient, accurate predictions to minimize energy consumption and optimize machine learning applications' ecological footprint
Future scenarios: a financial network analysis of stock market returns in the metaverse environment
Get PDFThe paper examines the financial market as a potential environment for the transformative power of the metaverse.The primary hypothesis is to construct future scenarios by investigating the metaverse’s influence on the financial returns of companies involved in its development. The focus lies on analyzing the relationship between the Meta- verse Index (MVI) returns and the returns of metaverse-oriented companies, with the aim of predicting emerging socio-technological trends.A dataset comprising daily closing prices of the time series from 2019 to 2023 was collected, including the MVI and 47 metaverse-related assets classified into 13 business areas. A two-step methodological approach was adopted: 1) correlation network analysis and 2) graph embedding strategy performed on correlation networks. The results highlight that the current scenario, characterized by a strong connection between MVI, technologies, cryptocurrencies, and real estate, which defines the meta-economy and digital property, will play a pivotal role in the future. The forecasts emphasize the development of metaverse-native enterprises, the creation of new stock market indexes designed to assess metaverse performance, and the development of customized intellectual property for their business models
Ecotranslation, Artvocacy and Care. A Creative Response to Climate Change Communication
Get PDFClimate change is a planetary crisis, which – among many other societal aspects – involves communication and, in particular, environmental communication. Despite the multiple efforts made to improve its quality and dynamics, environmental communication is defective, highlighting the need to tackle its flaws ethically and, specifically, ‘care-fully’. Drawing on my 2022-2023 Arts Council England project, ‘12 Stories for 12 Days of COP27’, the article reflects on the value of translation – or ecotranslation – as a communicative practice grounded in material and care-full work. The potential of art to facilitate communication between climate change experts, educators, health professionals, creative writers and lay publics and foster climate action and possibly activism among the latter was demonstrated through workshops with artists who translated the stories into prints. The aim of this article is to gain insight into the interconnections between translation and artmaking and the role that these interconnections play in effective ethical communication and advocacy or ARTvocacy (Hunter-Doniger 2020). Reflections on my care-full organization of the project, embedded within a wider international project run by the University of Exeter, are followed by the analysis of creative responses to fictional stories and, more broadly, climate change communication. The article makes use of a combination of approaches from Environmental Communication, Translation Studies and Ecofeminism to unveil not only the value of the project as advocacy but also the need to care and foster care-full work to respond to the climate crisis
I Greci di Calabria e di Terra d'Otranto nella Istoria di Romania di Marin Sanudo Torsello (XIV sec.): messa a punto di un problema storico ed etnolinguistico.
Get PDFItUna delle opere di Marin Sanudo il vecchio (detto Torsello, circa 1270-1343), originariamente scritta in latino tra gli anni Venti e Trenta del XIV sec., ci è giunta in una coeva traduzione italiana col titolo Istoria di Romania. Ricca di notizie su fatti storici realmente vissuti da Sanudo o riferitigli da parenti e conoscenti, questa descrizione cronologica (o quasi) delle vicende che hanno interessato soprattutto la Morea franco-greca tra il 1248 ed il 1285 e più in generale i rapporti tra gli Stati greci e quelli latini nella seconda metà del XIV sec., dedica un accenno anche alla presenza greca in Calabria ed in Terra d'Otranto. La menzione dei Greci che vivevano sul territorio italiano nelle due regioni meridionali era utile a Marin Sanudo per meglio far comprendere alcune dinamiche etniche, politiche e religiose nel difficile periodo di affermazione del potere angioino su quello svevo. L'articolo, prendendo le mosse dalle parole di Sanudo, ha l'obiettivo di inquadrare il ruolo delle comunità ellenofone del Sud Italia nelle complesse dinamiche politiche del Regno nell'ultimo quarto del Duecento, ma anche all'interno del più vasto panorama di relazioni tra Stati latini e greci prima dei Vespri siciliani.EnOne of the works of Marin Sanudo the Elder (known as Torsello, ca. 1270–1343), originally written in Latin between the 1320s and 1330s, has come down to us in a contemporary Italian translation with the title Istoria di Romania. Rich in information on historical events either personally experienced by Sanudo or reported to him by relatives and acquaintances, this (almost) chronological account of the events that mainly concerned Frankish-Greek Morea between 1248 and 1285 – and more generally the relations between the Greek and Latin states in the second half of the 13th century – also devotes a reference to the Greek presence in Calabria and in Terra d'Otranto. The mention of the Greeks living in these two southern Italian regions was useful to Marin Sanudo to shed light on certain ethnic, political, and religious dynamics during the difficult period of Angevin assertion of power over the Swabians. Starting from Sanudo's words, this article aims to frame the role of the Greek-speaking communities of Southern Italy within the complex political dynamics of the Kingdom in the second quarter of the 13th century, but also within the broader panorama of relations between Latin and Greek states prior to the Sicilian Vespers