The focus of this paper is how to evaluate the pedagogical soundness of a mobile learning environment in which many users (both teachers and learners) may not have previously encountered mobile technology, so may be uncertain how best to deploy it to achieve their goals. Drawing on concepts from Activity Theory and the socio-cognitive engineering method described by Sharples (2000), it describe...

previous studies have shown that caffeine has beneficial effects on cognitive impairment in sleep deprived male rats. therefore in the present study, we examined the effects of chronic caffeine administration on learning and memory impairments induced by sleep deprivation (sd) in the intact and ovarectomized (ovx) female rats. two sets of animals including intact and ovx were randomly recruited...

SimStudent is a machine-learning agent that learns cognitive skills by demonstration. It was originally developed as a building block of the Cognitive Tutor Authoring Tools (CTAT), so that the authors do not have to build a cognitive model by hand, but instead simply demonstrate solutions for SimStudent to automatically generate a cognitive model. The SimStudent technology could then be used to...

This paper proposes a design framework for constructing a groupware-based learning environment (GBLE) that enables electronic cognitive apprenticeship. The central theme of this framework is that any design of a GBLE must have learning theories as foundations to substantiate the learning effectiveness of this environment. The proposed framework applies the principles of cognitive apprenticeship...

Integrating a gradient-descent learning mechanism at the core of the graphical models upon which the Sigma cognitive architecture/system is built yields learning behaviors that span important forms of both procedural learning (e.g., action and reinforcement learning) and declarative learning (e.g., supervised and unsupervised concept formation), plus several additional forms of learning (e.g., ...

Resource allocation for secondary users is an important issue in cognitive radio networks. In our article, we introduce a resource allocation scheme for secondary users to share spectrum in a cognitive radio network. Secondary users can exploit the spectrum owned by primary links when the interference level does not exceed certain requirements. Uncertainties of channel gains pose a great impact...

Shape recognition is a holy grail of computer vision and a great wonder in the field of cognitive science. However surprisingly little is known about how this is done. In this survey the shear magnitude of the challenge will be explored in great detail with emphasis on how large search spaces in space time, the need for generalization make the task difficult.

This study investigated how awareness affected learners’ intake and production in relation to their cognitive styles. It is assumed that learners’ cognitive styles may affect their ability to notice particular features in the input and, consequently, their intake and production. Adult learners of English were exposed to four English structures through four sets of problem-solving tasks, followe...

purpose our study aimed to profile the effect of fasting during the ramadan month on cognitive function in a group of healthy muslim athletes. methods eighteen male athletes underwent computerized neuropsychological testing during (fasting) and after (non-fasting) ramadan. diet was standardized, and tests were performed at 0900h and 1600h to characterize potential time-of-day (tod) interactions...