Browsing by Issue Date, starting with "2024"
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- Método EtnográficoPublication . Rocha, Bruno; Silveira, PedroUma abordagem etnográfica não será, decerto, a escolha convencional de um investigador em Ciência Política, uma ciência social que tem privilegiado nas últimas décadas a utilização de métodos e técnicas quantitativas. No entanto, o método etnográfico não é estranho à disciplina, tendo vindo a conquistar espaço na análise de fenómenos políticos, da formulação e implementação de políticas públicas à análise de prática de segurança em zonas de fronteira. Ademais, deve sublinhar-se a sua relevância na produção de análises detalhadas indispensável à política comparada (Schatz, 2009, p. 3). [...]
- O planeta irreal, de Isabel Cristina PiresPublication . Mancelos, João deRecensão ao livro de poemas "O Planeta Irreal", da escritora portuguesa contemporânea Isabel Cristina Pires, focando aspetos como a identidade, as artes plásticas, a música e a dança, o espaço, o amor e a morte e, por fim, a própria poesia.
- Remapping Modernisms: Contemporary DebatesPublication . Zein, Ruth Verde; Pedrosa, Patrícia SantosAn International Docomomo conference in Latin America presents an opportunity to reflect on the very definition of modernity and modern architecture from diverse points of view. In the last decades of the previous century and the first decades of this one, international knowledge about 20th-century architecture has been significantly expanded, following in-site and archival research held by scholars worldwide. This recognition makes it increasingly clear how canonical history books, written decades ago by prestigious authors and being used worldwide as references to the situate Modern Architecture are outdated. Albeit very important and still very useful, these narratives are incomplete, of insufficient temporal and geographical range, and blind to the debate of gender and race issues, that are indispensable from a contemporary point of view. Yet – perhaps for lack of other options –we still rely upon them to define our current conceptual definition of “Modern Architecture”. It is an uncomfortable situation that must be questioned. It is necessary to expand our awareness, to remap, reframe, and perhaps re-date what should be defined and comprised as “Modern Architecture”. Revising the established propositions, reframing the habitual debates, and rethinking our teaching and research studies’ scope and focus is unavoidable.
- Service Quality of the Urban Microcellular Scenario in the Sub-6 GHz Frequency BandsPublication . Paulo, Rui R.; Teixeira, Emanuel; Velez, Fernando J.This paper compares the service quality between 4G and 5G New Radio (NR) among different sub-6 GHz frequency bands in an urban micro-cellular outdoor setting. An updated version of LTE-Sim is considered to obtain the exponential effective signal-to-interference-plus-noise ratio in 4G while determining the modulation and coding scheme. System capacity is obtained by considering a video application at 3.1 Mb/s and the proportional fair (PF) scheduler while comparing 4G and 5G NR through system-level simulations (the 5G-air-simulator is considered for 5G NR). The modified largest weighted delay first (MLWDF) scheduler is compared with the PF, though only in 4G. Optimal system performance is reached both in 4G and 5G NR for cell radii longer than two times the breakpoint distance (or beyond), which are preferable compared to the shortest values for the cell radius. We have learned that the packet loss ratio (PLR) is higher for the cell radii, R, shorter than breakpoint distance, d′ BP. For d′BP ≤ R ≤ 1000 m, the PLR first decreases and then increases. For a target PLR < 2%, in 4G, the highest maximum average goodput is obtained with the M-LWDF scheduler (10-25% increase). This maximum occurs at the 2.6 GHz and 3.5 GHz frequency bands for 300 ≤ R ≤ 500 m, while at 5.62 GHz the highest goodput occurs for the longest Rs. With 5G NR and the PF, the maximum average goodput increases, in our simulations, from ≈ 14.1 (in 4G) to 26.1 Mb/s (20 MHz bandwidth).
- Monotheism(s) and Violence: from the power of the sacred to the sacralisation of powersPublication . Amaral, AntónioThe article seeks to address the origin of the ambivalent (and ambiguous) relationship between religion and violence, asking, on the one hand, to what extent the force of the sacred determines and is determined by the “sacralization” of power, and discussing, on the other hand, the extent to which the devices for legitimizing political power tend to absorb the “strength” of religious power and vice versa, in a circularity whose feedback often insinuates and infiltrates a latent “inter-monotheistic” rivalry and, from this, narratives capable of inducing unimaginable levels of conflict and belligerence. Can interreligious dialogue overcome the impasses that fideisms (whether of a Jewish, Christian or Islamic nature) multiply and amplify at the heart of human communities, regardless of the societal or cultural ecosystem in which they occur?
- Nominalismo, atomismo lógico e discursividade metafórica: entre Aristóteles e RicoeurPublication . Amaral, AntónioRemonta a Aristóteles o primeiro esforço bem-sucedido para alcançar e estabilizar uma definição filosófica de metáfora: «A metáfora — refere o Estagirita — é a transferência “para uma coisa” do nome de uma outra “coisa”» [...]
- Tear meniscus height agreement and reproducibility between two corneal topographers and spectral-domain optical coherence tomographyPublication . Soares, Ivo; Ramalho, Eva; Brardo, Francisco M.; Nunes, Amélia FernandesClinical relevance: Tear meniscus height (TMH) is an important clinical marker in dry eye diagnosis and management. Purpose: To evaluate the reproducibility and agreement of TMH measurements in non-clinical participants using the Oculus Keratograph 5 M, Medmont Meridia, and Spectral-domain optical coherence tomography (Spectralis SD-OCT). Methods: Fifty-six participants (mean 43.8 ± 22.4 years) were recruited for this cross-sectional study. Image acquisitions were performed on the three devices, sequentially and randomized. The repeatability and reproducibility of inter-observer and inter-device analysis were performed. Repeated measures ANOVA and Bland-Altman Plots were used to evaluate the agreement between devices. Results: The mean TMH with the Oculus Keratograph 5 M, Medmont Meridia and Spectralis SD-OCT were 0.29 ± 0.16 mm, 0.24 ± 0.09 mm and 0.27 ± 0.16 mm, respectively. There were no significant inter-observer differences (paired t-tests, p < 0.001). All the devices exhibited good inter-observer reliability (ICC ≥ 0.877), and good repeatability (CV ≤ 16.53%). Inter-device reliability is moderate (ICC = 0.621, p < 0.001). Repeated measures ANOVA revealed that TMH measurements given by the Spectralis SD-OCT are not significantly different from the Oculus Keratograph 5 M (p = 0.19) and the Medmont Meridia (p = 0.38). TMH measurements from Oculus Keratograph 5 M were significantly higher than those from Medmont Meridia (p = 0.02). Correlations between the mean TMH and the difference in the TMH measurements were positive for Oculus Keratograph 5 M and Medmont Meridia (r2 = 0.62, p < 0.001), negative for Medmont Meridia and Spectralis SD-OCT (r2 = -0.59, p < 0.001), and not significant for Oculus Keratograph 5 M and Spectralis SD-OCT (r2 = 0.05, p = 0.74). A strong correlation was found for TMH measured with all devices (r2 = 0.55 to 0.81, p < 0.001). Conclusions The Oculus Keratograph 5 M, Medmont Meridia, and Spectralis SD-OCT provide reliable and reproducible inter-observer TMH measurements. Inter-device reliability is moderate, with a close correlation between Spectralis SD-OCT and the Oculus Keratograph 5 M. Oculus Keratograph 5 M and Medmont Meridia are repeatable devices appropriate for the measurement of TMH, but they are not interchangeable in clinical practice.
- Empowering Eco-Friendly Choices: An Environmental Impact Assessment Decision Support System for Textile and ClothingPublication . Gomes, Carolina; Pires, Irina; Monteiro, Letícia; Lima, Tânia M.; Gaspar, Pedro DinisThe textile and clothing industry is one of the industries with the highest environmental impact, with a huge amount of waste during the product life cycle. However, there are few tools available for companies to assess the environmental impact of their production process. In this way, a decision support system was developed so that producers can calculate the environmental impact associated with the textile and clothing production process, with the main objective of helping producers and, consequently, consumers to make environmentally conscious decisions given the increasingly demanding market. The methodology of this study integrated the accounting of a set of indicators, allowing producers to calculate the environmental impact associated with the textile and clothing production process. The decision support system returns, depending on the results of the calculations of the indicators, different ecolabels that allow consumers to compare different products based on their environmental performance. In short, the study in question allows us to contribute to environmentally conscious decision making, both for the producer and the consumer, to promote sustainable practices in the textile and clothing industry. The decision support system is flexible and adaptable for different companies and industries in order to meet their needs and improve their environmental performance.
- The Semiotics of Hate in Hoaxes about Immigrants Detected by Fact-Checking Platforms in Spain, Greece, and ItalyPublication . Vázquez Diéguez, Ignacio; Merino, Dory; Sánchez Esparza, MartaThe rejection of immigrants is socially constructed and fuelled by the viral spread of false information, giving rise to hate speech loaded with symbolism. Hence, this study undertakes a semiotic analysis of hate speech in hoaxes about immigrants published on social media in Spain, Greece and Italy from January 2022 to August 2023. These hoaxes were identified on the leading fact-checking platforms in each selected country: Newtral, Ellinika Hoaxes and Facta News/Open. A valid sample of 52 hoaxes was analysed using an interpretative perspective methodology, delving into the fundamental aspects of semiotics (denotative and connotative signs). The study highlights signs that give meaning to cultural codes, social representations, myths, or imaginaries. In addition, it concludes that these hoaxes repeat the same patterns across the three countries despite dealing with different information. The immigrant figure is associated with attributes such as vandal, anti-social, usurper or criminal, leading to the construction of meaning systems (myths) and social imaginaries that stigmatise this group and portray them as inconvenient in the host society.
- SGLT2i and GLP1RA effects in patients followed in a hospital diabetology consultationPublication . Lopes, António Cabral; Lourenço, Olga; Morgado, Manuel Augusto Nunes Vicente PassosAbstract Background: We aimed to investigate the effects of sodium-glucose cotransporter 2 inhibitors (SGLT2i) and glucagon-like peptide-1 receptor agonists (GLP1RA) in patients with type 2 diabetes mellitus (T2DM) in clinical practice. Research design and methods: A total of 340 patients were included. Data on age, gender, antidiabetic medications, and bioanalytical parameters were collected at baseline and one year later. Were analyzed estimated glomerular filtration rate (eGFR), blood sodium and potassium levels, blood pressure, weight, cardiovascular risk, and glycated hemoglobin (HbA1c). Results: Patients treated with SGLT2i exhibited a significant improvement in eGFR at the endpoint compared to baseline (p = 0.006). Both treatment groups experienced reductions in systolic blood pressure at the endpoint; especially patients treated with SGLT2i (p = 0.0002). GLP1RA treatment resulted in a statistically significant weight reduction from baseline to endpoint (p < 0.0001), with a higher percentage of patients achieving ≥ 5% weight loss compared to the non-GLP1RA group (33.6% vs. 19.8%). Both SGLT2i and GLP1RA treatments significantly reduced cardiovascular risk scores (p = 0.004 and p = 0.002, respectively). Additionally, both treatments were associated with a significant reduction in HbA1c levels at the endpoint (p = 0.010 and p = 0.002, respectively). Conclusions: Our findings suggest that SGLT2i and GLP1RA offer beneficial effects in patients with T2DM.