The right place for me: a moderated mediation model to explain involvement of employees aged over 50 years

Over the past decades, employment rates of older workers in most Western countries have rapidly increased. Hence, there is a growing interest in identifying the organizational dimensions that might impact the psychosocial adjustment of workers aged over 50 years. This study focuses on perceived organizational support (POS) and identity‐related measures (identification and authenticity) as key organizational components for workers at this stage of life. Furthermore, in the relationships discussed, we explore the moderating role of perceived age discrimination. In an ample sample of older workers (N = 4,563, aged 50–66 years), a moderated mediational model was tested where older workers' involvement was associated to POS. In the model, this relationship was mediated by organizational identification and authenticity, and the association between POS, identity‐related measures, and involvement was moderated by age‐based discrimination. Results showed that POS is associated with organizational involvement via organizational identification and authenticity and that high level of age discrimination decreased the positive association between POS, organizational identification, authenticity, and involvement

Reliability of assessing ballet dancers’ postural stability in the unshod and the en pointe relevÉ position with a smartphone application

Purpose. this study aimed to verify the reliability of estimating ballet dancers’ postural stability during the unshod and the en pointe relevé position with a smartphone application Methods. the participants (13 ballet dancers, 22.4 ± 2.5 years of age) were tested in the unshod and the en pointe relevé position (YMED Balance test application, smartphone secured at the L5 level for centre of mass approximation, 10 trials for each condition, 10 seconds per trial, 2-minute intertrial break, arms relaxed at bodyside, gaze fixated at an eye-level target, preferred feet width and orientation). Paired t-tests examined the inter-condition differences. relative (intraclass correlation coefficient, Icc) and absolute (standard error of measurement, SEM, SEM%) reliability indices (for accumulated and paired trials) were computed for each condition (SPSS software v. 26.0, p < 0.05). Results. the total balance score and all centre of mass spatial measures indicated worse postural stability in the en pointe condition (p < 0.05), with no significant temporal differences (p > 0.05). the total body balance score was the most reliable measure (good to excellent Iccs, low to moderate SEM%) with a minimum of 8 trials ensuring reliability in both the unshod and the en pointe relevé positions. Conclusions. taken a minimum of 8 trials and the measure of total balance score, we may obtain a reliable estimation of ballet dancers’ postural stability in the unshod and the en pointe relevé position by using the YMED Balance test smartphone application. © Wroclaw University of Health and Sport Sciences

Design criteria and methodology of a Multi-Rim Carbon-fibre Flywheel to be integrated within a Large-Airgap PMSM

The design of an Inner-Rotor Large-Airgap Permanent Magnet Synchronous Machine (IRLA-PMSM) is presented in this paper, whose distinctive feature consists of integrating a thick carbon-fibre cylindrical layer that acts as both a sleeve and a flywheel. This results in large airgap and makes simplified mechanical modelling generally used for sleeve design no more suitable. Therefore, an advanced mechanical modelling is presented in the paper, which is combined with an electromagnetic and energy modelling in order to make the analytical design procedure compliant with all the design targets and constraints. The proposed IRLA-PMSM is validated through finite element analyses, which regard both mechanical and electromagnetic aspects at different operating conditions