ESS - SA - Comunicações em eventos científicos
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- Acceptance of industrial collaborative robots: Preliminar results of appliction of portuguese version of the Frankenstein Syndrome Questionnaire (FSQ)Publication . Pinto, Ana; Ferraz, Mariana; Nomura, Tatsuya; Santos, JoanaCobots are highly flexible and able to operate in the same workspace and at the same time with the worker. The use of these technologies allows for increased production performance while ensuring comfort and confidence for the worker. Robot acceptance is still a controversial topic with various approaches and methods to measure acceptance of humanoid robots. This study aimed to evaluate cobots acceptance after a motor assembly task in a collaborative workstation. 30 university students were divided into two groups, with group 1 having read the assembly instructions before the usage of the assembly workstation and group 2 without having any previous knowledge about the car engine. All participants completed the Portuguese version of the Frankenstein Syndrome Questionnaire (FSQ). Data analyses were carried out using descriptive and inferential statistics using IBM SPSS Statistics software, version 28.0. One correlations was found between the scales of the FSQ (p < 0.05). It was possible to conclude that the acceptance of robots by the participants in group 1 and group 2 was the same. This study can contribute to understanding which factors explain the acceptance of collaborative robots, to improve human-robot intercation.
- Acidentes de trabalho no setor do comércio a retalho: um estudo de caso supermercados de conveniênciaPublication . Correia, Ana; Balazeiro, Márcia; Cavadas, Maria I.; Campos, Joana R.; Costa, Nelson; Rodrigues, João; Rodrigues, MatildeThis study aims to characterize the occupational accidents in convenience supermarkets, identifying the personal factors related to its frequency and severity. A total of 443 accidents that occurred between 2015 and September 2017, in a group of supermarkets from a Portuguese company, were analyzed. Different company databases were gathered and compiled for the purpose of this study. Frequency and severity rates were determined for the total accidents and for employees age and gender. Results showed that both accident rates increased during the analyzed period. Higher frequency and severity rates were found for female. Data also denote that accidents with higher severity occurred in workers with more than 46 years old and among the ones with basic education.
- An empirical study about the variables that influence the social acceptability on the biogasPublication . Dias, Telma; Rodrigues, Matilde; Pereira, Ilídio; Leão, Celina P.Due to the excessive use of conventional energy sources, renewable energy technologies have becoming a potential alternative to provide a sustainable development of society. Biogas has been considered as one of the most environmental beneficial source of energy that contributes for reducing greenhouse gas emissions and global warming (Jiang et al., 2011). Furthermore, the production of biogas can be highly important in rural areas, where there are many treatment stations of organic wastes, being a good way to solve problems related to release gases into the atmosphere, as well as related to the bad smells. However, the society opposition, disinterest and lack of knowledge about the advantages of biogas production and its use, can be a barrier to the availability of the implementation of these renewable technologies. In this context, more studies are necessary to clarify the public acceptability of these technologies (Zyadin et al ., 2012), in order to get further information to help into design an intervention strategy.
- An unobtrusive multimodal stress detection model & recommender systemPublication . Ferreira, Simão; Correia, Hugo; Rodrigues, Fátima; Rodrigues, Matilde; Rocha, NunoStudies estimate that about 50% of all lost workdays are related to occupational stress. In recent years, several solutions for mental health management, including biofeedback applications, have emerged as a way to enhance employee mental health. Solutions to mitigate risk factors related to the working settings present an enormous potential and a clear contribution. However, most of the work that has been developed is limited to laboratory environments and does not suit real-life needs. Our study proposes an unobtrusive multimodal approach for detecting work-related stress combining videoplethysmography and self-reported measures for stablishing the ground truth in real-life settings. The study involved 28 volunteers over a two-month period. Various physiological signals were collected through a videopletismography solution, while users were performing daily working, for approximately eight hours a day. In parallel, selfreported measures were collected via a pop-up application (developed by the research team) that periodically retrieved the user's perceived stress (amongst other variables) in order to label the physiological data. In order to develop the stress detection model, we pre-processed the data and performed Heart Rate Variability (HRV) feature extraction. Then, we experimented with several machine learning models, utilizing both individual and combined physiological signals to explore all available alternatives. After rigorous evaluation, the best-trained model achieved an accuracy of over 80% and an F1 Score of over 85%. With the stress detection model in place, we are developing a structured intervention model to help reduce stress. This intervention model integrates two interconnected dimensions through digital coaching, which prioritizes personalized recommendations based on user preferences. Our top priority is to ensure user engagement, and we believe that adherence to and adoption of recommended interventions are more likely when users receive recommendations that align with their preferences. Thus, we prioritize personalized recommendations that are tailored to each individual's unique model. After detecting immediate stress peaks and providing real-time feedback on stress levels, our alarm system goes a step further by offering customized recommendations for brief stress relief. The digital coach (intervention model) offers various recommendations and active lifestyle changes such as exercise, task management, weight management, better sleep habits, structured pauses, and other critical interventions. These critical interventions are also based on user preferences, allowing our system to prevent future stress-related incidents and, most importantly, mitigate long-term stress. This project and its methodology demonstrate that truly unobtrusive stress detection is possible and can be performed within the scope of ethical demands. In future work, we will evaluate the responses and beneficial outcomes of implementing a recommender system.
- An unobtrusive stress detection software: Protocol design to assess the reliability of video plethysmographyPublication . Ferreira, Simão; Rodrigues, Matilde; Campos, Carlos; Rocha, NunoSoftware solutions for stress detection have been emerging. Existing solutions still largely rely on supervised learning methods, requiring extremely large sets of labeled data for each situation. Stress assessment using video plethysmography is a recent method that needs further investigation. The room lighting conditions and the person’s movement have been identified as the main barriers to the software progression. Thus, it is necessary to build a laboratory pilot that will take into account these difficulties. We present an in-depth protocol on how to assess the reliability of a video facial recognition software on collecting physiological data (heart rate and blinking).
- Análise da percepção ergonómica de postos de trabalho dotados de microscópioPublication . Silva, Cátia; Rodrigues, Matilde; Mendes, Marta; Silva, Manuela V.; Moreira, Camilo C.; Monteiro, PedroA adequabilidade do dimensionamento dos postos e equipamentos de trabalho aos trabalhadores e às tarefas desenvolvidas é fundamental para a promoção de condições de conforto e prevenção do desenvolvimento de LMERT. A percepção dos trabalhadores é importante para a análise e intervenção ergonómica. Este estudo teve como objectivo analisar a percepção dos trabalhadores sobre a adequabilidade dos postos de trabalho que envolvam tarefas ao microscópio. Foi analisada a adequabilidade das dimensões dos elementos do mobiliário e do microscópio, e desenvolvido e aplicado o Questionário de Análise Ergonómica de Tarefas ao Microscópio (QAETM). O questionário contemplou questões associadas a características pessoais, actividades desenvolvidas, percepções de risco e sensações de dor e/ou desconforto. A análise das dimensões dos postos de trabalho mostrou que estas se apresentam em geral inadequadas às tarefas realizadas. Verificou-se ainda que alguns postos de trabalho tinham sofrido intervenções por parte dos profissionais. A maioria dos inquiridos considera as dimensões das cadeiras adequadas, contrariamente à das bancadas. No que respeita ao microscópio, foram sugeridas alterações ao nível dos parafusos de focagem, movimentação de platina e altura e inclinação das oculares. Este estudo permitiu verificar que alguns dos profissionais apresentam uma baixa percepção ergonómica, não sendo na sua maioria capazes de identificar a falta de adequabilidade das dimensões dos seus postos de trabalho. Apesar do referido, alguns revelaram preocupações ergonómicas, sugerindo e identificando, nomeadamente ao nível do microscópio, situações a alterar, tendo mesmo a iniciativa de intervir no seu posto de trabalho de modo a promover uma melhor postura.
- Analysis of the combined exposure to noise and ototoxic substances—pilot studyPublication . Lopes, Marta; Tomé, David; Carmo, Paulo Cardoso do; Rodrigues, Matilde; Neves, PaulaOtotoxic substances have been associated to damage of the auditory system, and its effects are potentiated by noise exposure. The present study aims at analyzing auditory changes from combined exposure to noise and organic solvents, through a pilot study in the furniture industry sector. Audiological tests were performed on 44 workers, their levels of exposure to toluene, xylene and ethylbenzene were determined and the levels of noise exposure were evaluated. The results showed that workers are generally exposed to high noise levels and cabin priming filler and varnish sector workers have high levels of exposure to toluene. However, no hearing loss was registered among the workers. Workers exposed simultaneously to noise and ototoxic substances do not have a higher degree of hearing loss than those workers exposed only to noise. Thus, the results of this study did not show that the combined exposure to noise and the organic solvent is associated with hearing disorders.
- Anatomic region differences and age-related changes on Na+ and K+ levels in human brainPublication . Pinto, Edgar; Ramos, P.; Carvalhido, A.; Pinto, N.; Mendes, R.; Santos, A.; Almeida, A.Neurodegenerative diseases (ND) have been the subject of intensive research in last years in an attempt to understand the mechanisms underlying the neurodegeneration process. The etiology of these diseases is multifactorial, involving a complex interaction between the aging, genetic predisposition and environmental factors. In particular, the role of metals as risk factors for neurodegenerative disorders is currently being studied. As regards to this topic, the knowledge of metal distribution in the brain is of major importance. Evidence suggests that Alzheimer's disease (AD) is associated with impaired depressed Na+/K+ ATPase levels in AD brain that might lead to a cellular ion imbalance. Recent studies show that a pronounced levels in AD brain that might lead to a cellular ion imbalance. Recent studies show that a pronounced and the age of individuals.
- Aplicação de ozono gasoso como agente desinfetante em ambientes ocupacionais: uma visão de eficácia e de segurançaPublication . Lopes, Rosa; Silva, Manuela V.A eficácia da desinfeção com ozono tem sido avaliada em vários estudos e em diferentes microrganismos. O ozono é usado na descontaminação da água para fins de consumo na Europa, incluindo outras aplicações como a desinfeção de água engarrafada, piscinas, prevenção de incrustação de torres de arrefecimento, tratamento de águas residuais e tratamento do ar em ambientes interiores. O ozono é efetivo contra fungos filamentosos, leveduras, vírus, bactérias e protozoários, esporos bacterianos e fúngicos, devido ao seu alto poder oxidante.
- Applied research on environmental and occupational health in hospital contextPublication . Carvalhais, Carlos; Xavier, Ana; Vieira Da Silva, Manuela; Santos, JoanaHospital facilities are normally, very complex, which combined with patient requirements promote conditions for potential development of uncomfortable working conditions. The work in hospitals is likely to damage health resulting in occupational accidents and diseases. In this sense, a project focused on Environmental and Occupational Health in Hospital Context was developed to be a contribution to understand the risk factors to which health professionals and patients are exposed in these environments and how this exposure can be reduced. This research line resulted in 34 publications and 11 oral/poster communications: 6 articles in international scientific journals, 3 book chapters, 13 articles/abstracts in books of international congress proceedings, 4 technical reports, 1 doctoral thesis and 7 final course works. The project allowed the study of data about occupational exposure and accidents in hospital environments in the North of Portugal