A first-order autoregressive model designed for integer-valued data, incorporating time-dependent periodic parameters is proposed. This framework employs a signed thinning operator and is driven by a periodic sequence of innovations. The proposed model accommodates integer values, allowing both the series and its autocorrelation function to take negative values. Some properties of the model are established. Thi...
Sem resumo disponível.
Sem resumo disponível.
Considering that textbooks primarily influence the selection of topics and ideas presented in the classroom, as well as the way these topics are taught, including evolution, this study aims to address the following research question: How is evolution treated in Portuguese school textbooks published between 2018 and 2025 for the 7th to the 9th grade (13-15y old students)? This study is based on a mixed-method re...
Os estudos têm demonstrado o afastamento do Estado no apoio financeiro às Universidades Públicas Portuguesas (UPP), evidenciado pelas parcas verbas anuais destinadas às IES, anualmente. Essa circunstância levou as universidades a procurarem novas formas de financiamento nacionais e internacionais. Tendo a FCT, enquanto agência pública, a primazia no financiamento das universidades para o desenvolvimento de proj...
Sem resumo disponível.
No abstract available.
Sem resumo disponível.