Conversando com a tecnologia: contribuições de João Augusto Bastos para a educação tecnológica

For the reader of this book it is reserved a historical walk through the efforts realized in the field of education to settle the necessary basis for the formation of a participating citizen in the socio-technical process and the dialogic and communicative action with the technological world. There are ten articles that discuss about many aspects of the relationship between education and technology, experienced by the author, who at any moment forgot thinkers with whom he spoke as Jürgen Habermas, Karl Marx, Karl Popper, Theodor Adorno, Max Horkheimer and Ruy Gama. You can dream and run away from the instrumental knowledge to incorporate the woven continuous experience in the practice and experience with people. In this atmosphere of concepts, characteristics and perspectives is the technological education, which runs through dialogue with technology, possession of knowledge and interdisciplinary. Talking to the technology, the subject interacts with society so that the demands are part of projects in this field of this champ of knowledge and the other sciences. It also means to explore knowledge and practices of professionals and educators working in this field full of normative and formative values.

Avaliação de características que influenciam nos votos de utilidade de opiniões sobre serviços em português

The large number of opinions generated by online users made the former “word of mouth” find its way to virtual world. In addition to be numerous, many of the useful reviews are mixed with a large number of fraudulent, incomplete or duplicate reviews. However, how to find the features that influence on the number of votes received by an opinion and find useful reviews? The literature on opinion mining has several studies and techniques that are able to analyze of properties found in the text of reviews. This paper presents the application of a methodology for evaluation of usefulness of opinions with the aim of identifying which characteristics have more influence on the amount of votes: basic utility (e.g. ratings about the product and/or service, date of publication), textual (e.g.size of words, paragraphs) and semantics (e.g., the meaning of the words of the text). The evaluation was performed in a database extracted from TripAdvisor with opinionsabout hotels written in Portuguese. Results show that users give more attention to recent opinions with higher scores for value and location of the hotel and with lowest scores for sleep quality and service and cleanliness. Texts with positive opinions, small words, few adjectives and adverbs increase the chances of receiving more votes.

Influência da revisão de atividades executadas para melhoria da acurácia na estimativa de software utilizando planning poker

Abstract – Background – The software effort estimation research area aims to improve the accuracy of this estimation in software projects and activities. Aims – This study describes the development and usage of a web application tocollect data generated from the Planning Poker estimation process and the analysis of the collected data to investigate the impact of revising previous estimates when conducting similar estimates in a Planning Poker context. Method – Software activities were estimated by Universidade Tecnológica Federal do Paraná (UTFPR) computer students, using Planning Poker, with and without revising previous similar activities, storing data regarding the decision-making process. And the collected data was used to investigate the impact that revising similar executed activities have in the software effort estimates' accuracy.Obtained Results – The UTFPR computer students were divided into 14 groups. Eight of them showed accuracy increase in more than half of their estimates. Three of them had almost the same accuracy in more than half of their estimates. And only three of them had loss of accuracy in more than half of their estimates. Conclusion – Reviewing the similar executed software activities, when using Planning Poker, led to more accurate software estimates in most cases, and, because of that, can improve the software development process.