PROA-UA (Univ. de Aveiro)
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Integration of Citizen’s Card Digital Authentication in Hyperledger
No full textThis study investigates the integration of the Portuguese Citizen’s Card authentication with Hyperledger Fabric blockchain technology, addressing the challenge of bridging traditional government-issued digital identities with blockchain-based systems, particularly focusing on reducing barriers to Web3 adoption for users unfamiliar with decentralized technologies. The proposed solution leverages the Autenticação.gov Software Development Kit (SDK), developed by the Portuguese Agency for Administrative Modernization (AMA) to create a secure bridge between the Citizen’s Card authentication system and Hyperledger Fabric\u27s permissioned blockchain framework. The study examines how this approach can facilitate the development of transparent, tamper-proof authentication systems suitable for critical applications such as e-voting and digital government services, and also feasible for on-premises systems. The findings suggest that integrating existing digital identity systems with blockchain technology can promote wider acceptance of decentralized solutions while maintaining security, privacy, and accessibility standards required for public sector applications
Green innovation in the hospitality industry: The role of green organisational culture and identity
No full textThis paper investigates if and how employee perceptions of the elements of green organisational culture help to create green innovation in the delivery processes and in shaping a green image of the hotel industry. It explores and tests the moderating role of organisational identity in the relationship between subjective norms and components of green innovation. A sample of 315 employees in luxury hotels/resorts participated in this study. The AMOS software platform was used to evaluate the measurement scales of the constructs, the measurement model, and the structural model within structural equation modelling. The results support six out of eight hypotheses within structural equation modeling. Especially, the effects of subjective norms on green innovation in the process and green image innovation become stronger with a positive moderating effect of organisational identity. Based on the research findings, the paper gives recommendations to help organisations promote the role of green organisational culture by encouraging employees to improve green innovation behaviour
El lecho pétreo de Antígona y Níobe: un lugar común (S. Ant. 823-840)
No full textIn the tragic play Antigone, the young heroine, after learning of her fatal fate, lamentfully compares her unfortunate position with that of Niobe (l. 823-833). The aim of this paper is to analyze these lines along with the consoling response of the chorus (l. 834-838) in order to shed light on the debate about Sophocles’ characterization of Antigone.En la tragedia Antígona, la joven heroína, después de conocer su fatal destino, compara entre lamentos su suerte con la de Níobe (vv. 823-833). El objetivo del siguiente estudio consiste en el análisis de estos versos junto con la respuesta del coro a modo de consuelo (vv. 834-838) con el fin de arrojar luz al debate candente sobre la caracterización que Sófocles hizo de su Antígona
Quílon e a oposição à tirania na tradição dos Sete Sábios
No full textThrough the mouth of Demaratus, Herodotus presents Chilon as being the sagest among the Spartans (7.235.5), thus paving the way that would lead to the inclusion of Chilon among the stable group of Seve Wise Men. However, this note is relatively discrete. More information is provided by the anecdote narrated earlier by the same Herodotus (1.59.1-3), depicting a meeting between Chilon and Hippocrates, the would-be father of the future tyrant Peisistratus. The anecdote reveals a basic animosity against tyranny, which will hang as a conceptual background in the tradition of the sophoi — despite the fact that some of the figures included in the group had exercised tyrannical rule. The historicity of this encounter of Chilon and Hippocrates must, understandably, be perceived with a good deal of skepticism. This does not prevent, however, that Chilon’s premonitory warnings contributed to establishing an authoritative terminus a quo for the tradition of Spartan opposition to tyrannical governments, which would become a distinguishing trait, as can be seen e.g. in Herodotus (5.92.1-2), Thucydides (1.18), Aristoteles (Pol. 1310b-1311b), Plutarch (Mor. 859C-D), and Polybius (4.81.13). A papyrus from the 2nd century BC (P. Ryl. 18 - FGrHist 105 F 1) even maintains that, during Chilon’s ephorate, the Spartans would have waged a systematic campaign against the tyrannies then existing in Greece. It is the goal of this paper to analyze how this opposition to tyranny became more broadly part of the Seven Sages tradition, takings as reference mainly the testimonies of Herodotus, Plato, Plutarch and Diogenes Laertius.Pela boca de Demarato, Heródoto apresenta Quílon como o mais sábio dos Espartanos (7.235.5), abrindo assim o caminho que levaria à inclusão de Quílon no grupo estável dos Sete Sábios. No entanto, esta nota é relativamente discreta. Mais informação é fornecida pelo episódio narrado antes pelo mesmo Heródoto (1.59.1-3), que descreve um encontro entre Quílon e Hipócrates, o pai do futuro tirano de Atenas, Pisístrato. O relato revela uma animosidade de base contra a tirania, que se manterá como pano de fundo conceptual na tradição dos sophoi — apesar de algumas das figuras incluídas no grupo terem exercido um governo tirânico. A historicidade deste encontro de Quílon e Hipócrates deve, compreensivelmente, ser encarada com bastante ceticismo. Isso não impede, porém, que os avisos premonitórios de Quílon tenham contribuído para estabelecer um terminus a quo para a tradição da oposição espartana aos governos tirânicos, que se tornaria um seu traço distintivo, como se pode ver, por exemplo, em Heródoto (5.92.1-2), Tucídides (1.18), Aristóteles (Pol. 1310b-1311b), Plutarco (Mor. 859C-D) e Políbio (4.81.13). Um papiro do século II a.C. (P. Ryl. 18 - FGrHist 105 F 1) sustenta mesmo que, durante o eforato de Quílon, os Espartanos teriam levado a cabo uma campanha sistemática contra as tiranias então existentes na Grécia. O objetivo deste artigo é analisar como esta oposição à tirania se tornou mais amplamente parte da tradição dos Sete Sábios, tomando como referência principalmente os testemunhos de Heródoto, Platão, Plutarco e Diógenes Laércio
BOLD: service-learning for linguistic and cultural diversity in higher education
No full textNo abstract available
