On the edge: haptic discrimination of edge sharpness.

The increasing ubiquity of haptic displays (e.g., smart phones and tablets) necessitates a better understanding of the perceptual capabilities of the human haptic system.

Computer- vs. paper-based tasks: are they equivalent?

In 1992, Dillon published his critical review of the empirical literature on reading from paper vs. screen. However, the debate concerning the equivalence of computer- and paper-based tasks continues, especially with the growing interest in online assessment.

Selection of image fusion quality measures: objective, subjective, and metric assessment.

Accurate quality assessment of fused images, such as combined visible and infrared radiation images, has become increasingly important with the rise in the use of image fusion systems. We bring together three approaches, applying two objective tasks (local target analysis and global target location) to two scenarios, together with subjective quality ratings and three computational metrics. Contrast pyramid, shift-invariant discrete wavelet transform, and dual-tree complex wavelet transform fusion are applied, as well as levels of JPEG2000 compression.

Mobile telephones, computers, and the internet: sex differences in adolescents' use and attitudes.

This study investigated sex differences in mobile telephone, computer, and Internet use and attitudes via self-report questionnaires in 15 and 16 year olds. Significant sex differences were reported for use and computer anxiety, and use and Internet attitudes, although both females and males were generally competent and frequent users of both technologies. No sex differences were reported for either general mobile phone use or expertise, although analysis of specific aspects of use indicated that the sexes favored different phone activities.

A self-analysis of the NASA-TLX workload measure.

Computer use and, more specifically, the administration of tests and materials online continue to proliferate. A number of subjective, self-report workload measures exist, but the National Aeronautics and Space Administration-Task Load Index (NASA-TLX) is probably the most well known and used. The aim of this paper is to consider the workload costs associated with the computer-based and paper versions of the NASA-TLX measure.