Mobile phones and elderly people: a noisy communication

Knowing the users is capital for building user-friendly digital interfaces. One way to think about the users is considering their familiarity with this technology. This article presents the results of twelve interviews with elderly people residing in the so-called South Zone of Rio de Janeiro (Brazil) who have used mobile phones over at least one year. It is part of the Doctor's Thesis "Mobile phones for elderly people - usability for social integration" ("Celulares para idosos - usabilidade a servi?o da integra??o social"), which is targeted at ascertaining if the current mobile phones are user-friendly for elderly people. Through the technique of Guided Interviews, we found usage time, criteria for choice of phones, reasons for changes, preferences, and manners of use. Preliminarily, we have noticed differences in the behavior of the participating users and performed a qualitative analysis according to groups of age and gender.     

Implantation of an ergonomics administration system in a company: report of an occupational therapist specialist in ergonomics

This article aims to describe step-by-step the implementation of an ergonomics administration system in a company from March 2009 till March 2011 by an occupational therapist specialist in ergonomics based on the OSHAS 18001 guidelines and the Regulatory Norms 17 manual. The process began with the definition of five requisites with bases on the manual of application of the Regulatory Norms 17: survey; materials individual transportation and discharge; workplace furniture; workplace equipments; work environment and organization of the work to be managed with bases on the OSHAS 18001 guidelines. The following steps were established: sensitization of the company high administration, elaboration and institution of an ergonomics politics, development of ergonomics committees, ergonomics analysis of the work with recommendation of ergonomic improvements, implantation of improvements and evaluation or the results. This research experiment suggests the importance not only of a guiding axle but also of a professional qualification and participation of the company on the implementation of an ergonomics management system.     

An ergonomic study on the navigation structure and information units of websites with multimedia content. A case study of the Xbox 360 promotional website

This paper presents an ergonomic study on the navigation structures and information units of entertainment sites with multimedia content. This research is a case study on the XBOX 360 promotional website. It analyzes the presentation of the content on a grid that simulates the spatial displacement of the screen's elements and evaluates the interaction that the page allows for, from the users' point of view.     

Professionals’ decision‐making in cases of physical punishment reported to child welfare authorities: does family poverty matter?

The influence of family poverty on professionals’ decision‐making in cases of physical punishment reported to child welfare agencies was examined. The sample was drawn from the Canadian Incidence Study of Reported Child Abuse and Neglect. The influence of five indicators of poverty on six investigation outcomes was assessed. In addition, a Poverty Index was constructed from these five variables to assess whether the family's overall poverty status influenced investigation outcomes. The outcome variables examined were case substantiation, provision of ongoing child welfare services, referrals to child and family support programmes, out‐of‐home placement, applications to child welfare court and police involvement. Together, the poverty indicators did not account for more than 6% of the explained variation in any of the outcome variables, nor did the magnitude of the Poverty Index affect the likelihood of any of the investigation outcomes. These findings suggest that family poverty does not influence professionals’ decision‐making in cases of physical punishment reported to child welfare agencies in Canada. The findings have implications for the ongoing development of policy aimed at reducing parental use of physical punishment.     

When Engagement Meets Politics: Analysis of a Brazilian Public Institution

Perception of organizational politics (POP) is usually associated with counterproductive factors. The reason for this stigma is that generally when employees perceive self-interest actions or backstage manoeuvres, they identify obstacles to their careers. On the other hand, the concept work engagement represents physical, cognitive and emotional factors from its dimensions (vigor, dedication and absorption) that can connect employees to their jobs. This study aimed to investigate the relationship between the dimensions of work engagement and perceptions of organizational politics in a public institution. Data were collected from 847 employees of a public educational institution, followed by a hierarchical cluster analysis to characterize groups with high and low work engagement scores. Multiple linear regressions were performed for each cluster. It was found that in the low engagement group, the three constructs’ dimensions were negatively related to POP. In the high engagement group there was no negative relationship between those two concepts, but a positive association between dedication and perception of politics was found. The results show evidence that highly engaged civil servants do not identify politics as an obstacle to their career development. The study also suggests that POP level is high in public educational institutions.     

Predictive comparisons in ordinal models

Bayesian predictive probability function approximations are derived and compared for ordinal logistic regression models. Classification and variable selection problems are also discussed. The methods are illustrated on a large data set of head injury patients.