The aim with the present study was to examine the relationship between the subcomponents in working memory (WM) and mathematical performance, as measured by the National tests in a sample of 597 Swedish third-grade pupils. In line with compelling evidence of other studies, individual differences in WM capacity significantly predicted mathematical performance. Dividing the sample into four group...

Several investigators have claimed over the past decade that working memory (WM) and general intelligence (g) are identical, or nearly identical, constructs, from an individual-differences perspective. Although memory measures are commonly included in intelligence tests, and memory abilities are included in theories of intelligence, the identity between WM and intelligence has not been evaluate...

In this work, superconvergent approximation of singularly perturbed two-point boundary value problems of reaction-diiusion type and convection-diiusion type are studied. By applying the standard nite element method on the Shishkin mesh, superconvergent error bounds of (N ?1 ln(N +1)) p+1 in a discrete energy norm are established. The error bounds are uniformly valid with respect to the singular...

Since there are no legally defined testing requirements for mobile positive pressure fans, they may be tested based on methods that do not correspond to their actual operating conditions. Adequate assessment of the technical and conditions this type equipment is particularly important used in rescue operations. Such units should characterized by efficient reliable operation. This article invest...

A number of studies have identified impairments in one or more types/aspects of attention processing in patients with aphasia (PWA) relative to healthy controls; person-to-person variability in performance on attention tasks within the PWA group has also been noted. Studies using non-linguistic stimuli have found evidence that attention is impaired in this population even in the absence of lang...

This paper focuses on detection of a single emotion and verification of a specific emotion type in a test utterance. To utilize a probabilistic output of a classifier as well as to exploit various long term acoustic features, we built a probabilistic output SVM and applied several approximated log likelihood ratio tests for emotion verification. Experimental results on SUSAS and AIBO emotion da...

Open source software provides an example not only of a viable software development methodology, but also a model for collaborative construction of artifacts. Open source communities exemplify principles that are important in collaborative learning environments. This paper explores how open source efforts can be used as inspiration for the creation of collaborative learning experiences in a univ...

Our work explores an interactive open learner modelling (IOLM) approach where learner diagnosis is considered as an interactive process involving both a computer system and a learner that play symmetrical (to a certain extent) roles and construct together the learner model. The paper presents an application of IOLM for diagnosing and fostering a learner's conceptual understanding in a terminolo...

This work analyses shear moduli of conventional and auxetic open-cell polymer foams. Shear are i) measured directly ii) calculated by applying elasticity theory for isotropic solid materials, using Young's Poisson's ratios from compression tests. Zero negative ratio foams fabricated a thermo-mechanical process. Fabricated tested in three orthogonal directions, up to densification at ~60% compre...