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Emerging Science Journal ; 5(Special Issue):37-61, 2021.
Article in English | Scopus | ID: covidwho-1290475


The daily fluctuations in the released number of Covid-19 cases played a big role at the beginning of the pandemic, when local authorities in Italy had to decide whether imposing restrictive policies. When an increase/decrease was communicated, especially a large one, it was difficult to understand if it was due to a change in the epidemic evolution or if it was a fluctuation due to other reasons, such as an increase in the number of swabs or a delay in the swab processing. The aim of this paper is both to model the main trend of the outbreak evolution in the number of confirmed cases and to describe the daily fluctuations strongly dependent on the daily number of swabs. For our analysis, we propose a nonlinear asymmetric diffusion model, which includes information on the daily number of swabs, to describe daily fluctuations in the number of confirmed cases in addition to the main trend of the outbreak evolution. The proposed model is found to be the more efficient for prediction, as compared to 6 already existing models, including the SIRD and the logistic models. The new model combines the properties of innovation diffusion models with a parsimonious way to exploit information about swabs. © 2021 by the authors.

Revista Brasileira de Linguistica Aplicada ; 21(2):467-496, 2021.
Article in English | Scopus | ID: covidwho-1268218


The aim of this article is to discuss teachers’ perspectives on how the COVID-19 pandemic has impacted the teaching of English to young learners (TEYL). We focused on one specific question (from a 10-question online questionnaire) in which participants shared their thoughts, experiences and concerns about TEYL in pandemic times. The answers were analyzed in a qualitative perspective, based on critical literacy research and studies in the field of TEYL. The results indicate the participants’ exhaustion due to dealing with unusual situations, and teaching focused exclusively on content in an attempt to show how teachers are reinventing themselves despite uncertainties and lack of training. The present moment requires reflections about goals and expectations in TEYL and in teacher education. © 2021, Universidade Federal de Minas Gerais, Faculdade de Letras. All rights reserved.