Browsing by Author "Silva, Miguel R."
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- Influência dos fatores psicossociais relacionados com o trabalho na motivação dos trabalhadores: um estudo de caso no setor industrialPublication . Silva, Ana C.; Dores, Artemisa Rocha; Machado, Inês N.; Silva, Miguel R.; Alves, Sandra Maria; Rodrigues, MatildePsychosocial risks are at the origin of negative consequences for organizations and individuals. Despite the potential relationship with the level of workers' motivation, few studies have analyzed this issue in industrial settings. This study aimed to assess work-related psychosocial risk factors and determine their relationship with intrinsic and extrinsic motivation. The study was developed in an industry, and 49 workers were included. The Copenhagen Psychosocial Questionnaire (COPSOQ II) was used to assess psychosocial factors, and the Work Extrinsic and Intrinsic Motivation Scale (WEIMS) was used to assess motivation. The subscales "job insecurity", "cognitive demands", "emotional demands", "social support from superiors" and "influence at work" showed relevant risk values for workers' health, so they should be prioritized in the intervention. The motivational dimensions that presented the highest values were "intrinsic motivation" and "external regulation". Significant associations were found between the variables under study. This study reinforces that work-related psychosocial risk factors are associated with workers' motivation.
- Lean Six Sigma Approach to Improve the Production Process in the Mould Industry: a Case StudyPublication . Pereira, António M.H.; Silva, Miguel R.; Domingues, Mercedes A.G.; Sá, José CarlosPurpose: The purpose of this article is to explore the optimization of internal process is assumed as a critical factor to be capable of answering to the moulds industries. Consequently, it has been considered essential to adopt high-valued methodologies to support tooling industry in order to achieve global competitive advantages. For that purpose, this work aims to apply LEAN principles and techniques to support mould design and manufacturing processes. Methodology/Approach: The methodology used was based on PDCA/DMAIC, with the following stages: Define, Measure, Analyze, Improve and Control. For each stages was taken some of Lean Six Sigma techniques, such as Continuous Improvement, Value Stream Mapping, Pareto analysis and Overall Equipment Effectiveness. Findings: This study results was revealed that there are many areas on the organizations in the Mould Industry, when they utilize otimizations tools obtain hugt successes. With the Pareto analysis was carried out to show that events that contributes the most to the stops. The results were: unavailability of the operator (16.4%), programming the machine (14.4%) and tool exchange (12.4%) In the case of this Mould Industry study was obtained for the CNC machines studies, with the implementation of Lean Six Sigma tools as obtained a improvement about 20% of global OEE. Research Limitation/implication: This research was revealed that there the moulds are Project unique and difficult to analyze. Moreover, this paper reports that the approach LEAN Six Sigma is very interesting for the continuous improvement of processes and profitability of moulds industry. Originality/Value of paper: This research highlight areas of future research using of quality management methods and Lean Six Sigma tools to analyse and optimize production in the moulds industry. Therefore this research It is considered to promote and adopt high-valued methodologies to support tooling industry in order to achieve global competitive advantages.