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Browsing ESTG - Artigos em revistas internacionais by Sustainable Development Goals (SDG) "08:Trabalho Digno e Crescimento Económico"
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- Comentário ao Processo C-324/17, Gavanozov, 24 de outubro de 2019: O princípio do reconhecimento mútuo versus Direitos FundamentaisPublication . Castilhos, Daniela Serra; Pacheco, Fátima; Barata, Mário SimõesO artigo dedica-se à análise e comentário da decisão resultante do Processo (C-324/17, Gavanozov, de 24 de outubro de 2019) que constitui a primeira decisão do Tribunal de Justiça da União Europeia relativamente à Decisão Europeia de Investigação. Para tanto, pretende fazer-se o enquadramento da cooperação judiciária em matéria penal e do princípio do reconhecimento mútuo. Começa-se por analisar a Diretiva 2014/41/UE que aprovou a Decisão Europeia de Investigação (DEI), integrando-a no Espaço da Liberdade, Justiça e Segurança. São igualmente considerados os motivos de não reconhecimento ou de não execução de uma DEI, nomeadamente aqueles que se prendem com os direitos fundamentais. Por fim, analisa-se o litígio e a questão prejudicial colocada, bem como as conclusões do Advogado-geral, na perspetiva de avaliar se houve, no caso, uma violação dos direitos fundamentais, designadamente os Artigos 47º e 48º da Carta dos Direitos Fundamentais da União Europeia, pela autoridade judicial de emissão na Bulgária.
- O conceito de “autoridade judiciária de emissão” a partir dos Processos apensos C-508/18 e C-82/19 PPU (Caso Parquet de Lübeck) e eventuais ecos na Decisão Europeia de Investigação em PortugalPublication . Guimarães, Ana Paula; Castilhos, Daniela Serra; Barata, Mário SimõesNa interpretação dada pelo Tribunal de Justiça da União Europeia, no caso Parquet de Lübeck, que versa sobre matéria do mandado de detenção europeu, do conceito de “autoridade judiciária de emissão” ficam excluídas as Procuradorias por força de estas poderem ser permeáveis a influência direta ou indireta do poder executivo. Por sua vez, o Ministério Público é “autoridade de emissão” em sede de decisões europeias de investigação em matéria penal, nos termos do artigo 3.º, alínea c), da Lei n.º 88/2017, de 21 de agosto, que transpôs a Diretiva 2014/41/UE, do Parlamento Europeu e do Conselho, de 3 de abril de 2014. Tendo em consideração a autonomia e hierarquia do Ministério Público e o modo de nomeação e exoneração do Procurador-Geral da República, procuramos ver se o decidido no Acórdão supra referido teria alguma repercussão ao nível da competência do Ministério Público para emissão de uma decisão europeia de investigação. Concluímos em sentido negativo. O Ministério Público não depende do Ministro da Justiça, tem consagração constitucional e atribuições definidas na lei e respetivo estatuto e só pode emitir uma decisão europeia de investigação restrita aos atos processuais que são da sua competência nos termos da lei interna.
- O efeito do greenwashing no consumo ético mediado pela confusão verde e pelo ódio à marcaPublication . Santos, Célia; Coelho, Arnaldo; Marques, AlziraO greenwashing verifica-se quando as empresas enganam os consumidores quanto às suas práticas ambientais ou benefícios dos seus produtos/serviços. Esta investigação centra-se nos impactos dessas práticas no consumo ético e analisa como a confusão verde e o ódio à marca atuam como mediadores nessa relação. Baseado em informações recolhidas por meio de questionário aplicado numa amostra de 420 consumidores portugueses, foi realizado estudo confirmatório, quantitativo e transversal (ou de corte único). A análise foi conduzida através de um modelo de equações estruturais com o software SmartPLS. Os resultados sugerem que o greenwashing aumenta a confusão verde entre os consumidores, dificultando a correta interpretação de aspetos ambientais de um produto/serviço. Além disso, o greenwashing gera emoções negativas extremas, como o ódio à marca. Os resultados também demostram que os consumidores, quando percecionam práticas de greenwashing por parte de uma empresa/marca tendem a deixar de comprar os seus produtos/serviços, optando por alternativas mais éticas e responsáveis. Foi estabelecida relação positiva direta e indireta entre greenwashing e consumo ético. Esta investigação avança o estado da arte, que carece de estudos relacionados com as consequências das práticas de greenwashing e elucida as empresas da necessidade de eliminar essas atividades enganadoras e irresponsáveis. Limitações e oportunidades de estudo futuras são abordadas.
- From Desalination to Governance: A Comparative Study of Water Reuse Strategies in Southern European HospitalityPublication . Santos, EleonoraAs climate change intensified water scarcity in Southern Europe, tourism-dependent regions such as Portugal’s Algarve faced growing pressure to adapt their water management systems. This study investigated how hotel groups in the Algarve have adopted and communicated water reuse technologies—specifically desalination and greywater recycling—under environmental, institutional, and reputational constraints. A comparative qualitative case study was conducted involving three hotel groups—Vila Vita Parc, Pestana Group, and Vila Galé—selected through purposive sampling based on organizational capacity and technology adoption stage. The analysis was supported by a supplementary mini-case from Mallorca, Spain. Publicly accessible documents, including sustainability reports, media coverage, and policy frameworks, were thematically coded using organizational environmental behavior theory and the OECD Principles on Water Governance. The results demonstrated that (1) higher organizational capacity was associated with greater maturity in water reuse implementation; (2) communication transparency increased alongside technological advancement; and (3) early-stage adopters encountered stronger financial, regulatory, and operational barriers. These findings culminated in the development of the Maturity–Communication–Governance (MCG) Framework, which elucidates how internal resources, stakeholder signaling, and institutional alignment influence sustainable infrastructure uptake. This research offered policy recommendations to scale water reuse in tourism through financial incentives, regulatory simplification, and public–private partnerships. The study contributed to the literature on sustainable tourism and decentralized climate adaptation, aligning with UN Sustainable Development Goals 6.4, 12.6, and 13.
- High dynamic range - a gateway for predictive ancient lightingPublication . Gonçalves, Alexandrino José Marques; Magalhães, Luís; Moura, João; Chalmers, AlanIn the last few years, the number of projects involving historical reconstruction has increased significantly. Recent technologies have proven a powerful tool for a better understanding of our cultural heritage through which to attain a glimpse of the environments in which our ancestors lived. However, to accomplish such a purpose, these reconstructions should be presented to us as they may really have been perceived by a local inhabitant, according to the illumination and materials used back then and, equally important, the characteristics of the human visual system. The human visual system has a remarkable ability to adjust itself to almost all everyday scenarios. This is particularly evident in extreme lighting conditions, such as bright light or dark environments. However, a major portion of the visible spectra captured by our visual system cannot be represented in most display devices. High dynamic range imagery is a field of research which is developing techniques to correct such inaccuracies. This new viewing paradigm is perfectly suited for archaeological interpretation, since its high contrast and chromaticity can present us with an enhanced viewing experience, closer to what an inhabitant of that era may have seen. In this article we present a case study of the reconstruction of a Roman site. We generate high dynamic range images of mosaics and frescoes from one of the most impressive monuments in the ruins of Conimbriga, Portugal, an ancient city of the Roman Empire. To achieve the requisite level of precision, in addition to having a precise geometric 3D model, it is crucial to integrate in the virtual simulation authentic physical data of the light used in the period under consideration. Therefore, in order to create a realistic physical-based environment, we use in our lighting simulations real data obtained from simulated Roman luminaries of that time.
- Nature-Based Solutions for Water Management in Europe: What Works, What Does Not, and What’s Next?Publication . Santos, EleonoraNature-based solutions (NbS) are increasingly recognized as strategic alternatives and complements to grey infrastructure for addressing water-related challenges in the context of climate change, urbanization, and biodiversity decline. This article presents a critical, theory-informed review of the state of NbS implementation in European water management, drawing on a structured synthesis of empirical evidence from regional case studies and policy frameworks. The analysis found that while NbS are effective in reducing surface runoff, mitigating floods, and improving water quality under low- to moderate-intensity events, their performance remains uncertain under extreme climate scenarios. Key gaps identified include the lack of long-term monitoring data, limited assessment of NbS under future climate conditions, and weak integration into mainstream planning and financing systems. Existing evaluation frameworks are critiqued for treating NbS as static interventions, overlooking their ecological dynamics and temporal variability. In response, a dynamic, climate-resilient assessment model is proposed—grounded in systems thinking, backcasting, and participatory scenario planning—to evaluate NbS adaptively. Emerging innovations, such as hybrid green–grey infrastructure, adaptive governance models, and novel financing mechanisms, are highlighted as key enablers for scaling NbS. The article contributes to the scientific literature by bridging theoretical and empirical insights, offering region-specific findings and recommendations based on a comparative analysis across diverse European contexts. These findings provide conceptual and methodological tools to better design, evaluate, and scale NbS for transformative, equitable, and climate-resilient water governance.
- Pareto Models for the Energy Released in EarthquakesPublication . Felgueiras, Miguel; Santos, Rui; Martins, João PauloIn this paper we explore Pareto based distributions to deal with the energy released by the major seisms. This is a relevant problem because great earthquakes can cause heavy losses, both human and material. The standard Pareto distribution, despite being usually well fitted to the data concerning the energy released by seisms, reveals some lack of fit when dealing with the energy released by the great earthquakes. Besides the more traditional Pareto and Log-Pareto, we also consider the Extended Slash Pareto (ESP) and the Location-Scale Pareto Mixture (LSPM) distributions in this work. For the less studied ESP and LSPM distributions, we present the parameters estimators and perform a simulation study in order to evaluate the estimators performance under different scenarios. Thenceforth, the four distributions are applied to two datasets (catalogs) containing information on the seisms magnitude, which has a direct connection to the energy released by the earthquakes (seismic moment). The used catalogs are considered as conveniently accurate and updated, and are being used in recent works. In conclusion, the Pareto distribution still is appropriate to fit this kind of data, but other distributions emerge as better models. The Log-Pareto distributions led to higher fitting p-values than the Pareto distribution, and LSPM also emerges as a strong competitor. LSPM is better fitted to the greatest observations and therefore gives a more accurate prevision for the energy released by the greater earthquakes.
- Proposal of Artifact to Measure Degree of Boldness in Business Social ActorsPublication . Rogeri, Nelson; Meireles, Manuel; Sanches, Cida; Ferreira Jr., Samuel; Marietto, Marcio LuizThis work proposes an artifact oriented by Design Science (DS) methods for measuring the degree of boldness in business social actors, especially entrepreneurs and businesspeople. To construct the artifact, the work of Eysenck and Wilson (1975) was used. The methodological approach used was Design Science, as the present object of study is considered an information artifact and, as such, has functions of data processing, reducing entropy (vision of syntax), forming meaning (vision of representation), and achieving viability (vision of adaptation). To ensure the validity of the study, a sample of users made up of 30 organizational psychologists was used, selected by convenience. The results demonstrated that using the artifact allows to measure entrepreneurs’ degree of boldness, affording them greater assertiveness in choosing and structuring their business. The study has a number of implications for managerial practice since by using the artifact it is possible to measure an entrepreneur’s degree of boldness and allow more assertive choices and structuring of their business, all the while reducing the rate of micro and small businesses that die early. In the academic field, the artifact will enable research on the degree of boldness of businesspeople with diverse other organizational variables.
- Reconstruction and generation of virtual heritage sitesPublication . Rodrigues, Nuno; Magalhães, L.; Moura, J.; Chalmers, A.Traditionally procedural modelling techniques are commonly used to generate new structures and are presently established in several areas such as video games and computer animated movies. However they may also be used in heritage applications to efficiently produce models of non-existing worlds for which there is some kind of knowledge (e.g. floor plans, photographs) to support the reconstruction of realistic environments. Similarly they may also be used to support the generation of distinct possibilities that allow experts to draw some conclusions or conceive different hypotheses about lost worlds. The present paper shows the benefits and constraints that may arise from the use of such techniques in virtual heritage applications. Furthermore, a whole method is proposed, for the reconstruction and generation of virtual heritage traversable house models, provided through the means of a grammar, demonstrated with the reconstruction and generation of several Roman houses from the heritage site of Conimbriga, Portugal.
- The reference method influence on the sensitivity of the Clostridium difficile enzyme immunoassays: A meta analysisPublication . Martins, João Paulo; Felgueiras, Miguel; Santos, RuiThe use of enzyme immunoassays to screen for toxins A and B produced by Clostridium difficile is a common procedure in algorithms designed for its detection. Moreover, the absence of a unique test capable of providing reliable results at low cost motivates a great discussion about which algorithm is the best. Thus, several studies have evaluated the performance of these enzyme immunoassays. However, all fail to provide sufficient explanations for the different behaviours observed in different studies that evaluate the same index test against a common reference method. Our main goal was to find out which factors affect the sensitivity of these assays, since the specificity is very close to 1. In this research, we verified that sensitivity increases with the prevalence rate and with the proportion of reported cases of onset diarrhea. Therefore, its use is advisable for high prevalence rates (e.g. in an epidemic setting). As far as reference methods are concerned, nucleic acid amplification tests can be used as a reference method, with a performance similar to the well-accepted toxigenic culture. The method chosen for toxigenicity screening in a toxigenic culture also seems to affect the evaluation performance of tests and should be better studied in the future.