Browsing by Author "Costa, Nelson"
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- 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.
- Acidentes de trabalho que resultam em lesões musculoesqueléticas no setor do retalho alimentarPublication . Balazeiro, Márcia; Correia, Ana; Cavadas, Inês; Costa, Nelson; Rodrigues, João; Rodrigues, MatildeOs acidentes de trabalho que resultam em lesões musculoesqueléticas (LME) têm uma elevada expressão sobre o total de acidentes. No entanto, existe pouca evidência sobre os acidentes ocorridos no setor do retalho alimentar, apesar da sua relevância face às atividades desenvolvidas pelos trabalhadores. O presente estudo teve como objetivo analisar os acidentes por sobre-esforço físico em duas tipologias de supermercados (hipermercados e supermercados de conveniência). Para tal foram analisados os dados presentes nas bases de dados da empresa relativos aos acidentes ocorridos entre 2015 e o primeiro semestre de 2017. Os resultados mostraram que as LME ainda são significativas relativamente ao total de acidentes notificados, tendo-se observado um aumento do Índice de Gravidade ao longo do período em estudo nas duas tipologias de supermercados. O Índice de Frequência baixou ligeiramente, mas mantendo uma considerável expressão face ao total de acidentes. As partes do corpo mais afetadas foram os membros superiores, as costas e os membros inferiores, tendo-se verificado uma relação entre a atividade física e a parte do corpo afetada. O mecanismo que esteve na origem de um maior número de acidentes foi a movimentação manual de cargas realizada de modo inadequado. Os resultados remetem para a necessidade de intervenção de forma a reduzir os índices de sinistralidade por LME.
- Real-time Modeling of Abnormal Physiological Signals in a Phantom for Bioengineering EducationPublication . Vieira, Helder; Costa, Nelson; Coelho, Luis Filipe Pinto; Alves, JoaquimIn clinical practice and in particular in the diagnostic process, the assessment of cardiac and respiratory functions is supported by electrocardiogram and auscultation. These exams are non-invasive, quick and inexpensive to perform and easy to interpret. For these reasons, this type of assessment is a constant in the daily life of a clinician and the information obtained is central to the decision making process. Therefore, it is essential that during their training, students of health-related subjects acquire skills in the acquisition and evaluation of the referred physiological signals. Simulation, considering the technological possibilities of today, is an excellent preparation tool since it exposes trainees to near real contexts but without the associated risks. Hence, the simulation of physiological signals plays an important role in the education of healthcare professionals, bioengineering professionals and also in the development and calibration of medical devices. This paper describes a project to develop synchronized electrocardiogram (ECG), phonocardiogram (PCG) and breathing sounds simulators that aims to improve an existing phantom simulator. The developed system allows, in an integrated way, to generate normal and pathological signals, being contemplated several distinct pathologies. For engineering education, it is also possible to simulate the introduction of signal disturbances or hardware malfunctions. A graphical interface allows changing operating parameters in real time.
- Safety culture in higher education institutions: Knowledge and training preferencesPublication . Filho, P. C. Anacleto; Dall-Orsoletta, Alaize; Carneiro, Paula; Colim, Ana; Leão, Celina P.; Rodrigues, Matilde; Costa, Susana; Costa, NelsonThe development of a positive culture is a key element within an organization to achieve performance against a strategic objective. In terms of safety, universities play a very important role in training new professionals who must be increasingly aware and prepared for the challenges of the labour market and daily activities. Therefore, this study aims to assess the safety culture of newcomer students to higher education through the application of a 22-item questionnaire. Participants included 109 undergraduate and master’s students from 31 different courses at a university in Northern Portugal. It was observed that the level of knowledge varied according to the type of course adopted and the gender of the student. A global performance level of below 80% shows that safety knowledge can improve further. Additionally, different preferences concerning the content, moment, and format of safety training were presented. The low level of interest in training related to chemical leakage, suspicious package, and bombing show participants may attribute a low probability level to these events. In conclusion, this work shows that it can be useful for universities to consider different training approaches according to different course types.