The quota system in Brazil made it possible to include blind studentsin higher education. Teachers’ lack of knowledge about the braillesystem can represent a barrier between them and students who useit for writing and reading. Computer-vision-based transcriptionsolutions represent mechanisms for reducing understanding restrictionson this system. However, such tools face nuisances inherentto image processing systems, e.g., illumination, noise, and scale,harming the result. This paper presents an automated approachto mitigate transcription errors in braille texts for the Portugueselanguage. We propose a selection function, combined with dictionaries,that provides the best correspondence of words based ontheir braille representation. We validated our proposal on a datasetof synthetic images by submitting them to different noise levelsand testing the proposal’s robustness. Experimental results confirmthe effectiveness of the solution compared to a standard approach.As a contribution of this paper, we expect to provide a method tosupport robust and adaptable solutions to real use conditions.
This work presents a comparison between the valuation/depreciation prediction results (from one month to another) of vehicles in Brazil considering the combination of four groups of characteristics: i) previous sales; ii) the number of vehicle sales; iii) basic interest rate; and iv) national consumer price index. We create a comparison baseline training a MultiLayer Perceptron Regressor (MLPR) based only on the vehicle’s value in the previous month, and then we train the MLPR by combining the previous vehicle value with combinations of the characteristic groups. Experiments were performed from 2013 to 2022 and evaluated in terms of Mean Squared Error (MSR) and Median Absolute Error (MAE). The combination of characteristics that presented the best MSR for the 2018-2022 period (COVID-19 period) was among the worst from 2014 to 2017. It is possibly concluded that data scientists must periodically adjust parameters according to the current economic conditions to obtain the best automatic forecast results of the monthly valorization/depreciation of vehicles in Brazil.
O Mapa Conceitual é uma ferramenta gráfica para representar o conhecimento
organizado. Por ser visual, não é ensinado às pessoas com cegueira. Este trabalho apresenta um recurso tangível que foi desenvolvido para estudantes com cegueira construir mapas conceituais em braille. Uma sequência de atividades foi planejada e executada usando tal recurso para introduzir os mapas conceituais para 4 estudantes com cegueira do ensino público. O relato dessa experiência é apresentado neste artigo.
Este artigo relata a experiência do Núcleo Docente Estruturante de um curso de Bacharelado em Engenharia de Software de uma Instituição de Ensino Superior, no processo de construção da nova matriz curricular em uma abordagem por competências. Para o desenvolvimento das competências, foram consideradas as Diretrizes Curriculares Nacionais e atos normativos institucionais. Como contribuições do estudo, destaca-se que a abordagem baseada em competências permitiu: (i) a criação de uma matriz de Unidades Curriculares alinhada com mercado de trabalho; e (ii) a incorporação natural de feedbacks relacionados à absorção de conhecimento e competências por parte dos estudantes. Dessa forma, este estudo pode ser utilizado como guia para que outros cursos adotem abordagens similares ao reformularem suas matrizes curriculares.
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