Browsing by Author "Almeida, J."
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- Air and Underwater Survey of water enclosed spaces for VAMOS! ProjectPublication . Almeida, J.; Ferreira, A.; Matias, B.; Dias, A.; Martins, A.; Silva, F; Oliveira, J.; Sousa, P.; Moreira, M.; Miranda, T.; Almeida, C.; Silva, E.This paper addresses a three-dimensional (3D) reconstruction of a flooded open pit mine with an autonomous surface vehicle (ASV) and unmanned aerial vehicle (UAV). The ROAZ USV and the Otus UAV were used to provide the underwater bathymetric map and aerial 3D reconstruction based from image data. This work was performed wihtin the context of the European researcj project VAMOS with the objective of developing robotic tools for efficient underwater mining
- Autonomous bathymetry for risk assessment with ROAZ robotic surface vehiclePublication . Ferreira, H.; Almeida, C.; Martins, A.; Almeida, J.; Dias, N.; Dias, A.; Silva, E.The use of unmanned marine robotic vehicles in bathymetric surveys is discussed. This paper presents recent results in autonomous bathymetric missions with the ROAZ autonomous surface vehicle. In particular, robotic surface vehicles such as ROAZ provide an efficient tool in risk assessment for shallow water environments and water land interface zones as the near surf zone in marine coast. ROAZ is an ocean capable catamaran for distinct oceanographic missions, and with the goal to fill the gap were other hydrographic surveys vehicles/systems are not compiled to operate, like very shallow water rivers and marine coastline surf zones. Therefore, the use of robotic systems for risk assessment is validated through several missions performed either in river scenario (in a very shallow water conditions) and in marine coastlines.
- ISEP/INESC TEC Aerial Robotics Team for Search and Rescue Operations at the EuRathlon Challenge 2015Publication . Sousa, P.; Ferreira, A.; Moreira, M.; Santos, T.; Martins, A.; Dias, A.; Almeida, J.; Silva, E.This paper presents the autononomous aerial vehicle OTUS and its application to search and rescue scenarios, namely the participation on the EuRathlon 2015 competition. The OTUS robot was developed at INESC TEC/ ISEP for research in cooperative aerial robotics and applications in complex and dynamic environments. The system was validated in this challenging scenario and was able to win the Grand Challenge scenario in
- Metabolic syndrome and inflammation: is there a microvascular and an incretin system impairment in the gastrointestinal tract?Publication . Costa, J.; Almeida, J.; Coelho, Pedro; Oliveira, S.; Prudêncio, Cristina; Soares, R.; Gomes-Guerreiro, S.; Fernandes, RúbenMetabolic syndrome is a multifactorial disorder characterized by increased plasma levels of glucose, cholesterol and triglycerides, but also overweight and obesity promoted by increase of body fat mass, alterations in oxidative stress, chronic low grade inflammation and resistance to insulin leading to risk of cardiovascular diseases. The stomach and the intestine have an essential role in metabolism with functions of digesting food and absorption of nutrients. Also, the intestine produces incretin hormones, such as GLP-1 which regulates glucose metabolism and processes of the gastrointestinal tract.
- Perceptions of rock band musicians about the effects of loud music and protective practicesPublication . Rodrigues, Matilde; Almeida, J.Rock band musicians are an important group in what regards to the exposure to high sound pressure levels. They can be exposed to loud music, which can result in hearing damages. However, there are very few studies focused on this issue. In view of this, this study attempts to analyze the perceptions about musicians in relation to the loud music risks, as well as to characterize their preventive behaviors and health effects. To analyze this issue, a questionnaire was applied to 14 musicians belonging to three garage rock bands. The results showed that group rehearsals and concerts are considered the noisiest activities and the sound pressure levels at individual practices are seen as low. Guitar and drums were identified as the noisiest instruments and the piano was seen as the instrument that produce lower sound levels. The results also showed that only a part of the musicians were concerned with the health effects related to the exposure to high sound levels and the majority of them reported do not use hearing protection. The findings of this study emphasize the need to give more attention to these groups, informing them about the risks and on the need of risk reduction measures.