This article describes a web-based communicative space (a Dynamic Frequently Asked Questions environment—DFAQ) in which learners consult one another using questions, and in which both the flow of interaction and its artefacts become a resource available to a community of learners. Anecdotal evidence suggests that learners embarking on their first year of university study enter a world that is e...

Recent developments in Software Defined Radio technology have created the opportunity to develop networks that are, in principle, highly adaptable and effective under a much wider range of operating conditions than currently possible, but few researchers are able to fully exploit this new flexibility. Cognitive radio networks require multiple interacting capabilities for situation assessment, p...

In this paper we would like to propose that the methodology of cognitive modeling can provide an approach to the implementation of socially adept technologies and the evaluation of its usability. We base this approach on the assumption that representations play an essential role in mediating social relations. Cognitive representations and their causal link to the social and physical environment...

Abs tract. The authors have developed a web-based production system that users can use whenever and anywhere by the Internet. The authors held two cognitive science introductory classes with the system. In our class activities, participants were required to construct running cognitive models on the production system architecture that can solve pulley problems. The participants not only construc...

This paper describes the motivations and goals of the MATHESIS project which concerns the development of an intelligent authoring environment for cognitive math tutors. It also describes the first implemented component of the project, the MATHESIS algebra tutor, a cognitive web-based tutor for algebraic expressions’ expanding and factoring. The tutor uses cognitive model tracing by dynamically ...

ACT-UP is a toolbox implementation of the ACT-R cognitive architecture, aimed at allowing rapid prototyping of complex models. With ACT-UP, we propose Accountable Modeling, where the only model components that are specified are those supported by empirical evidence and part of the model’s theoretical claims. ACT-UP is a library providing a programmatic interface to the classical ACT-R functiona...

Although access to grid resources is realized through a standardized interface, independent grid resources are not only managed autonomously but are also accessed as independent entities. Such environment results in configuration differences among individual resources forcing users that access those resources to deal with the variability in resource configurations. This behaviour breaks the con...