An improved robust stabilization method for discrete-time fuzzy systems with time-varying delays

This note focuses on the robust stabilization of discrete-time fuzzy uncertain systems with time-varying delays under a delayed nonparallel distributed compensation scheme. The key idea is twofold: first, the linear matrix inequalities (LMI) proposed here are shown to generalize some previous similar results available in recent literature, and second, the design of control parameters is decoupled from the proposed fuzzy-basis dependent Lyapunov–Krasovskii functional (FBDLKF) by means of Finsler?s lemma. Finally, a numerical example is provided to illustrate the effectiveness of this method.     

Writing expository essays from social studies texts: a self-regulated strategy development study

Reading and Writing - This study examined the effectiveness of Self-Regulated Strategy Development (SRSD) to improve students’ ability to write expository essays after reading social studies...     

History of Science in Physics Teaching

Science educators are increasingly using a historical approach to pedagogy as a way to enable students to understand the process of the construction of science in a more contextualized manner. Considering the meaning of context in a broader sense, this article has two objectives. First, it aims to explore how physics lessons using a Cultural History of Science approach allowed the development of activities that encouraged students to have discussions about science where their own socio-cultural context was considered, referring to Brazilian scientific production. Second, the article to investigate which understandings about scientific practices could be developed by students from in-class discussions inspired by the Cultural History of Science approach focusing on a historical and students’ own social contexts. The historical episode selected to be introduced in their physics lessons was the development of the Leiden jar in Europe, in the eighteenth century, focusing on the quotidian practices and habits that enabled the construction and use of this artifact. The lessons developed from the Cultural History approach seemed to allow the students to understand that science was developed by many different social actors, in sites that exceed the laboratory and by actions performed in various dimensions. The findings suggest that this approach in science teaching can be a strategy to historically contextualize the development of science while allowing students to reflect about the scientific production in their social context.

     

Dyslexia heterogeneity: cognitive profiling of Portuguese children with dyslexia

Recent studies have emphasized that developmental dyslexia is a multiple-deficit disorder, in contrast to the traditional single-deficit view. In this context, cognitive profiling of children with dyslexia may be a relevant contribution to this unresolved discussion. The aim of this study was to profile 36 Portuguese children with dyslexia from the 2nd to 5th grade. Hierarchical cluster analysis was used to group participants according to their phonological awareness, rapid automatized naming, verbal short-term memory, vocabulary, and nonverbal intelligence abilities. The results suggested a two-cluster solution: a group with poorer performance on phoneme deletion and rapid automatized naming compared with the remaining variables (Cluster 1) and a group characterized by underperforming on the variables most related to phonological processing (phoneme deletion and digit span), but not on rapid automatized naming (Cluster 2). Overall, the results seem more consistent with a hybrid perspective, such as that proposed by Pennington and colleagues (2012), for understanding the heterogeneity of dyslexia. The importance of characterizing the profiles of individuals with dyslexia becomes clear within the context of constructing remediation programs that are specifically targeted and are more effective in terms of intervention outcome.     

Executive functions and pragmatics in children with high-functioning autism

Children with deficits in executive functions (EFs) and impairments in pragmatic language have a range of cognitive and language difficulties that affect their literacy and educational achievements. As deficits in EFs and pragmatic impairments are characteristics of autism spectrum disorders, this study examined the associations between EFs and pragmatic skills in children with high-functioning autism (HFA). Fifteen children with HFA (5–9 years; M?=?7.44, SD 1.21), matched to 15 typically developing peers on age, gender, and non-verbal intelligence participated in the study. Children completed a pragmatic language assessment protocol, and a rating scale of EFs was administered to parents. Our results point to two main findings: children with HFA presented pragmatic difficulties and EFs impairments when compared with typically developing peers; and, as shown by a significant indirect effect of group on pragmatics via EFs, the poor pragmatics skills of HFA children were associated with their EFs difficulties. These findings may be of clinical relevance for children with pragmatic impairments, such as autism spectrum disorders. Future studies are crucial to further investigate the relationship between impaired pragmatics and EFs.

     

Alignment of developments in higher education

This study builds upon the concept of alignment within the curriculum(due to Biggs) and suggests, in the context of two current examples, anintegrated methodology for effectively aligned development activitieswithin universities. Higher Education institutions face importantchallenges. Firstly, quality enhancement of the curriculum is now aninstitutional concern, if not a priority, in the face of governmentalpressure and in a competitive environment. It is no longer a matter ofindividual endeavour. Secondly, we now have a basic pedagogy for adultlearning, and should put that into practice systematically. And thirdly,staff are now faced with the demand to commit themselves to professionaldevelopment, and to determine what that means in terms of theirparticular profession. This paper considers these challenges, andrelates them to the argument for an integrated methodology forinstitutional, staff and curriculum development, which aligns theseactivities rather more effectively than hitherto. At the same time, itadvocates a logical model for curriculum development, as a complementarytool of alignment for student-centred curriculum development.Theargument is illustrated by recent work in the Open University in the UKand in the Universidade de Aveiro in Portugal.