This research addresses the use of mobile devices with both embedded and external sensors to provide contextualized help, advice, and remediation to learners engaged in real-world learn-by-doing tasks. This work is situated within the context of learning a complex procedure, in particular emergency responders learning to conduct urban search and rescue operations. Research issues include the de...

A 20-year-old woman was admitted to a Gynecology Hospital in her 6th month of pregnancy for high blood pressure and tonic-clonic seizure. Primary diagnosis was eclampsia, and for that reason she underwent cesarean section. She also had headache on frontal and parietal areas without nausea or vomiting. There was not a focal neurological sign. Rheumatology consultation was requested. Systemic lup...

By opening the learner model to both the learner and other peers within an e-learning system, the learner is able to reflect on the contents of the model. Information in the model depends on the context in which it is generated. Current systems translate an existing model to fit the context. The active open user modelling approach presented in this paper describes a method of generating the mod...

A model for learning in the limit is defined where a (so-called iterative) learner gets all positive examples from the target language, tests every new conjecture with a teacher (oracle) if it is a subset of the target language (and if it is not, then it receives a negative counterexample), and uses only limited long-term memory (incorporated in conjectures). Three variants of this model are co...

This paper describes a study of a simple open learner model that can be optionally released to peers in named or anonymous form, to facilitate collaborative and competitive learning in a situation where the learner model contents contributed to students' assessment. Results suggest that, under the right conditions, students may start working sooner; discussion amongst students can be increased;...

Since we began participating in DUC in 2001, our summarizer has been based on an HMM (Hidden Markov Model) for sentence selection within a document and a pivoted QR algorithm to generate a multi-document summary. Each year, however, we have modified the features used by the HMM and added added linguistic capabilities in order to improve the summaries we generate. This year’s entry, called “CLAS...

Handedness and brain asymmetry are widely regarded as unique to humans, and associated with complementary functions such as a left-brain specialization for language and logic and a right-brain specialization for creativity and intuition. In fact, asymmetries are widespread among animals, and support the gradual evolution of asymmetrical functions such as language and tool use. Handedness and br...

Social cues conveyed by the human face, such as eye gaze direction, are evaluated even before they are consciously perceived. While there is substantial individual variability in such evaluation, its neural basis is unknown. Here we asked whether individual differences in preconscious evaluation of social face traits were associated with local variability in brain structure. Adult human partici...

asterixis, firstly described in metabolic encephalopathies, may occur unilaterally in patients with various focal brain diseases. although hardly localizing, most reported cases have showed a contralateral thalamic pathology; but lesions in the medial frontal lobe, parietal lobe, brain stem, basal ganglia, insular lesions, may also cause unilateral asterixis. in this article, three cases of acu...