ESTiG - Artigos em Proceedings Não Indexados à WoS/Scopus
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Percorrer ESTiG - Artigos em Proceedings Não Indexados à WoS/Scopus por Objetivos de Desenvolvimento Sustentável (ODS) "09:Indústria, Inovação e Infraestruturas"
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- Evolução da institucionalização de políticas de segurança de sistemas de informação na administração pública portuguesaPublication . Lopes, Isabel Maria; Oliveira, PedroAs administrações públicas manipulam cada vez mais, grandes quantidades de informação em suportes tecnológicos, por isso são imprescindíveis controlos de segurança cada vez mais rigorosos e abrangentes. De entre as medidas de segurança, as políticas assumem na literatura um papel central. Todavia, um estudo de 2010 aponta a existência de um reduzido número de Câmaras Municipais que têm implementadas políticas de segurança de sistemas de informação [1]. Este artigo contribui para comparar os dados desse estudo com dados de 2016 através da apresentação dos resultados de um inquérito feito à Administração Pública Local em Portugal. Os resultados são discutidos à luz da literatura e identificam-se trabalhos futuros com vista a potenciar a adoção de políticas de segurança na Administração Pública.
- Extraction of natural fibers for the manufacture of 3D filaments by FDM material extrusionPublication . Stein, Felipe Y.M.; Rocha, João; Santos, Jorge; Ribeiro, J.E.; Deusdado, Leonel; Rocha, CatarinaThe study aimed to extract hemp fibers for the NaturFab project, in order to mechanically strengthen PLA in filaments for 3D printing. In order to find the best extraction method, several chemical treatments were carried out to separate the fibers from the plant, using solutions of 2 g/l of sodium hydroxide (NaOH) + 2 g/l of sodium carbonate (NaCO₃) and another solution of 6% NaOH, both at 80 ºC. After obtaining the first fiber sample, tensile tests were carried out to compare the strength of the hemp fibers with those of commercial flax. Hemp showed inferior performance compared to flax fibers, with a more fragile behavior after treatment with 6% NaOH. However, a solution of NaOH and NaCO₃ with polyglycolic detergent facilitated extraction and improved fiber strength, but further tests should be carried out to verify its effectiveness.
- Multi-dimensional layers framework for classifying waste in industrial plantsPublication . Rossi, Arthur; Leitão, Paulo; Pontes, JoseaneThe transition from Industry 4.0 to Industry 5.0 introduces new challenges in waste management, particularly digital, energy and human waste. However its not clear how to classify and categorize without creating new dilemmas in the 8 traditional established wastes from Lean theory. To solve this problem, this paper aims to develop a multi-dimensional layers framework to classify waste by making a interpretation of the traditional lean principles into a digital and sustainable layer perspective. The methodology involves projecting the 8 lean wastes onto physical, digital, and sustainable layers, allowing for a comprehensive waste characterization. With this, its presented a framework that identifies various types of digital waste, such as defective data and excessive non-value-adding data, and high-lights the energy inefficiencies and human factors associated with digital transformation. The results shows the framework’s ability to provide a n organized approach to attempt to classification new wastes typologies without creating new wastes and keeping the Lean theory at its original state. As such, this study contributes to the literature by expanding the concept of digital waste and integrating sustainability into waste typology and providing the implications of the layer expansion for future research.
- R&D in Portuguese companiesPublication . Praça, Lídia GalvãoThe purpose of this study is to charactetize and evaluate the Research and Development (R&D) activities of Portuguese companies, from 2016 to 2022. This is a descriptive statistical analysis of R&D activities, from an internal and external perspective of the companies and by sector of activity, based on the Community Innovation Survey. It was possible to observe an increase in R&D activities, especially intramural activities, as well as in activities carried out internally, on a continuous basis.