Browsing by Author "Ribeiro, Pedro Rodrigues"
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- A case study with a police officer: alexithymia and neurocorrelates following on-duty assault injuryPublication . Moreno, Ana Filipa; Ribeiro, Pedro Rodrigues; Hill, Rowena; Rubiol Vilalta, Susanna; Oliveira-Silva, Patrícia
- Consumers’ engagement and perspectives on sustainable textile consumptionPublication . Ribeiro, Pedro Rodrigues; Batista, Patrícia; Mendes-Palma, Francisco; Pintado, Manuela; Oliveira-Silva, PatríciaThis study examines the knowledge and involvement of consumers in sustainability goals, aiming to provide valuable insights to the textiles and clothing industry to foster their social responsibility efforts and enhance consumer interaction. By comprehending and monitoring consumer behavior, organizations can effectively implement sustainable practices and work towards achieving sustainable development goals. For this study, a questionnaire was designed to evaluate consumer concerns, behavior, self-reliance, and perspectives across four key phases of interest in sustainable consumer behavior regarding textiles—acquisition, use, maintenance, and disposal. The results show a compelling insight into the mindset of participants who prioritize budget, quality, comfort, and functionality over sustainability when acquiring new textile items. Most respondents do not participate in clothing rental or sharing and predominantly refrain from purchasing second-hand products, but they expressed a readiness to extend the lifespan of their products and displayed concern about ensuring a responsible end-of-life for their belongings. Moreover, they attach importance to textile products’ social and informational attributes and demand transparency from brands. These valuable data can guide the industry in its interactions with consumers. Scholars are increasingly committed to sustainability and its implications for practical application and policy development.
- EEG and ECG nonlinear and spectral multiband analysis to explore the effect of videogames against anxietyPublication . Ribeiro, Pedro Rodrigues; Silva, Clédna Patrícia de Oliveira; Rodrigues, Pedro Miguel de LuísCurrently, the use of video games has purposes that go beyond entertainment and has been gaining prominence in the health area. In this sense, it was hypothesized that it is possible to discriminate biological signals, namely electrocardiographic and electroencephalographic signals, collected from different participants stimulated through three different commercial video games, Tetris, Bejeweled and Energy. To test this hypothesis, a protocol was developed with the Trier Social Stress Test to induce and dose stress in the subjects to similar levels before each game session, in order to observe the effects of the three test games (3 study groups) at the physiological level. Initially collected at 2000 Hz, the signals were resampled to 500 Hz and filtered using a Butterworth low-pass filter. After filtering the signals, several representative features of the study signals were collected. These features consisted of a series of nonlinear metrics such as the Lyapunov exponent and Correlation Dimension, self-similarity metrics such as the Hurst exponent, and detrended fluctuation analysis, fractal dimensions - such as the Katz and Higuchi fractal dimensions - and metrics of signal chaos and activity, such as signal energy, Logarithmic entropy and Shannon entropy, and a number of spectral metrics for the EEG signal, which should be able to help identify any differences in the stress response. As a final result, a discrimination accuracy of 100% was obtained to discriminate the three study groups, using the top 20% of features selected by the F-score technique, using the coarse K Nearest Neighbor classifier.