Optimal Nash tuning rules for robust PID controllers

In this paper, we propose tuning rules for one degree-of-freedom proportional-integral-derivative controllers, by considering important aspects such as the trade-off in the performance in the servo and regulation operation modes and the control system robustness by constraining the maximum sensitivity peak. The different conflicting objectives are dealt with by using a multi-objective optimization algorithm to generate the trade-off optimal solutions. In this context, a simple tuning rule is determined by using the Nash solutions as a multi-criteria decision making technique. The Nash criteria is shown to provide convenient trade-off solutions for the controller tuning problem. Illustrative simulation examples show the effectiveness of the method.     

Universities,knowledge and pedagogical configurations: Glimpsing the complex university

This paper elaborates a typology of universities in which each university is characteristically associated with (i) diverse missions, (ii) different ways of producing knowledge and (iii) contrasting pedagogical configurations. Four university forms are identified, analysed and illustrated, namely the expert university, the non-elite university, the entrepreneurial university and the revolutionary university. It is suggested that the typology and the analysis of university forms offered here provide insight into the current positioning of universities in relation to the wider world and have potential in prompting new forms of university for the twenty-first century. The paper further advances another possible university for the future, namely the complex university. The complex university is part of and respectful of diverse ecosystems. It creates new frameworks to understand the world and, in that way, supports social transformations.     

A school-based motivational intervention to promote physical activity from a self-determination theory perspective

The authors analyzed the effects of a multidimensional intervention to promote physical activity (PA) in school, based on self-determination theory. The study involved 88 students, between 14 and 17 years old, who were divided into a control group (n = 59) and an experimental group (n = 29). In the experimental group, a 6-month intervention was conducted, applying a teaching unit of fitness and health in physical education (PE) classes, an extracurricular program of healthy PA, and meetings with families. Questionnaires were administered to measure different motivational variables and PA levels at four time points. Significant differences were found in favor of the experimental group in parental and peer autonomy support; integrated regulation in PE; autonomy, intrinsic, and identified regulation in leisure-time PA; moderate, hard, and very hard PA; and physical self-worth. Motivational effects were maintained over time but the effects on PA levels disappeared at 6 months.     

Towards the university entrepreneurial mission: Portuguese academics’ self-perspective of their role in knowledge transfer

The role of the university in society and the economy is evolving. Universities produce knowledge that promotes technological developments, which are, in turn, critical to economic growth and competitiveness in the global economy. Therefore, it is increasingly expected that universities become more entrepreneurial and assume this third mission in order to promote innovation and development through the provision of technologies and business ventures. Drawing on data collected for The Changing Academic Profession Project – a comparative survey of the academic profession carried out in 19 countries from all over the world – this article explores Portuguese academic entrepreneurship engagement based on the involvement in the process of technology transfer as an activity performed in the context of research activities. It thus aims to contribute to knowledge about academics’ engagement in entrepreneurial activity. Results from this study suggest that Portuguese academics are fairly involved in entrepreneurial activities and that there is an overall positive attitude towards application of research to real problems. Furthermore, it was possible to see that academics involved in processes of technology transfer are not only focused on activities such as research but also service to the outside community. However, when comparing academics involved and not involved in entrepreneurial activities, several significant differences are found in their attitudes, perceptions and behaviours.     

Children's rights and their subjective well-being from a multinational perspective

This article explores the relationship between children's knowledge and perceptions about their rights and subjective well-being (SWB) in a sample of 8-, 10- and 12-year-olds in 18 countries, taking account of gender differences. Children's knowledge and perceptions about their rights were analysed considering whether they reported that they knew their rights, whether they had heard about the UN Convention on the Rights of the Child (CRC) and whether they thought that, in their country, adults respected their rights. To explore SWB, a modified version of the Student's Life Satisfaction Scale, adapted by the Children's Worlds project, was used. Children reporting that they knew their rights, knew about the CRC, or thought that in their country adults respected their rights demonstrated significantly higher SWB scores than those reporting otherwise in the 18 countries. The effects of perceiving that adults in general respected children's rights in their own country on SWB were much more important than the knowledge of children's rights or the knowledge of the CRC. Results provide useful indications on how to promote children's well-being in public policies, including in education, through the promotion of their rights.     

Effects of a psychomotor intervention programme in preadolescents with Down syndrome / Efectos de un programa de intervención psicomotriz en preadolescentes con síndrome de Down

Movement is key to human physical and mental maturation, hence the importance of non-delayed psychomotor development. Psychomotor development occurs much later in children with Down Syndrome (DS) as compared with typically developing children. The objective of this research is to assess the effectiveness of an intervention programme aimed at the psychomotor development of preadolescents with DS (Experimental Group n = 5, Control Group n = 5), focusing on body schema and spatio-temporal structure. Results show a significant increase in body awareness as well as in concepts of space and quantity. Nevertheless, it is necessary to consolidate these motor abilities in a personalized and more prolonged way in order to minimize psychomotor developmental delays.     

Exploring fourth graders’ sourcing skills / Un análisis de la capacidad de escrutinio sobre las fuentes de información de los estudiantes de cuarto grado

Acquiring information from the Web creates new educational demands even in elementary school. Children need to scrutinize source information (‘sourcing’) to choose trustworthy information. So far, few studies have documented young readers’ abilities to identify and evaluate source information. With two studies, we seek to gather more evidence on elementary students’ sourcing skills and use. In study 1, we investigate to what extent fourth graders can identify source information and evaluate informants’ expertise and intentions in simplistic, age-appropriate reading tasks. In study 2, we explore whether fourth graders spontaneously apply their sourcing skills when reading simplified multiple documents. Results suggest that fourth graders can successfully identify source information and evaluate informants’ expertise and intentions in simple and direct tasks but fail to apply this ability to more complex and implicit tasks. Implications for information literacy education are discussed.     

A model for the effective engagement of all stakeholders in engineering education and its pilot implementation

Methodologies for engineering learning and teaching (MELT) approach aims to enhance the attractiveness of education through science, technology, engineering and mathematics (STEM) among young people, while promoting awareness of future careers in these areas. To this end, students’ expectations are considered within university programmes, aiming to an increased engagement in STEM careers. To accomplish these goals, a new and integrated approach (MELT) is presented, involving the main stakeholders in both scientific education and society. An education framework is presented, providing guidelines for an improved collaborative approach to STEM education in the future. Results from the pilot implementation of MELT are presented, from a small-scale education parliament prototype. From these initial stage and results, it is seen that there is a need for a proper alignment of expectations from all involved stakeholders, concerning the engineering education towards society’s demands.     

Home-based family involvement and academic achievement: a case study in primary education

Does home-based family involvement influence academic performance? To answer this question, a case study research was carried out with 96 children from all six levels of primary education at a public school, and their families. Data regarding home-based family involvement were collected using a questionnaire. Academic achievement was measured from school marks. The results reveal that, apart from two of the factors considered, home–family involvement as a whole is not significantly related to academic achievement. These two factors are access to informal education resources and parents’ employment. Family involvement related to the access of children to informal education resources is significantly related to a better academic achievement. Those students with both parents working perform best, and those with none working, worst. Although gender does not appear to significantly influence academic achievement and family involvement, the results show that girls attain better school performance and receive more family attention than boys.     

An assessment model for virtual communities of practice: a study in the oil and gas industry

This paper proposes a model to assess the level of maturity in Virtual Communities of Practice (VCoPs). The model is based on a theoretical construction attained from the analysis of previous frameworks proposed in literature. Using this construction, we have proposed eight main organizational, managerial and technological levers to improve the performance of VCoPs. Additionally, the model presents the analysis of four performance metrics obtained from these VCoP management levers. The model presented can be used as a benchmarking tool for analysing how companies perform in their management of VCoPs. After developing the model, we applied it to a benchmarking study of four global oil and gas companies. Our results include a performance comparison among these companies as well as the main practices and technologies they use to achieve success in the management of VCoP.