University of York

About: University of York is a education organization based out in York, York, United Kingdom. It is known for research contribution in the topics: Population & Health care. The organization has 22089 authors who have published 56925 publications receiving 2458285 citations. The organization is also known as: York University & Ebor..

Direct measurement of cognitive load in multimedia learning.

Abstract: Cognitive load theory (CLT) is gaining increasing importance in the design and evaluation of instruction, both traditional and technology based. Although it is well understood as a theoretical construct, the measurement of cognitive load induced by instructional materials in general, and by multimedia instruction in particular, mainly relies on methods that are either indirect, subjective, or both. Integrating aspects of CLT, working memory research, and cognitive theories of multimedia learning, we describe the conceptual basis and practical implementation of a dual-task approach to the direct measurement of cognitive load in multimedia learning. This computer-based instrument provides a direct and objective measure that overcomes many of the shortcomings of other indirect and subjective methods that will enable researchers to validate empirically theoretical predictions of CLT.

Coming Out in the Age of the Internet: Identity “Demarginalization” Through Virtual Group Participation

Abstract: Internet newsgroups allow individuals to interact with others in a relatively anonymous fashion and thereby provide individuals with concealable stigmatized identities a place to belong not otherwise available. Thus, membership in these groups should become an important part of identity. Study 1 fou

Determinants of Capital Structure and Adjustment to Long Run Target: Evidence From UK Company Panel Data

Abstract: This paper examines the empirical determinants of borrowing decisions of firms and the role of adjustment process. A partial adjustment model is estimated by GMM estimation procedure using data for an unbalanced panel of 390 UK firms over the period of 1984–1996. Our results suggest that firms have long-term target borrowing ratios and they adjust to their target ratios relatively fast, which might suggest that the costs of being away from their target ratios are significant. The results also provide support for positive impact of size, and negative effects of growth opportunities, liquidity, profitability of firms and non-debt tax shields on the borrowing decisions of companies.

Robot pose estimation in unknown environments by matching 2D range scans

Abstract: We develop two algorithms to register a range scan to a previous scan so as to compute relative robot positions in an unknown environment The first algorithm is used on matching tangent lines defined on two scans and minimizing a distance function The second algorithm iteratively establishes correspondences between points in the two scans and then solves the point-to-point least-squares problem to compute the relative pose Our methods avoid the use of localized features They work in curved environments and can handle partial occlusions >