Stair safety: bottom of flight illusion.

Constancy scaling and conflict when the Zöllner illusion is seen in three dimensions.

If a standard Zöllner illusion is seen as a staircase in depth, pairs of long lines flanking convex stair edges appear to diverge as usual, but divergence in pairs flanking concave edges can appear reduced. If the stair is reversed perceptually in the manner of the Schröder staircase, convex and concave shapes exchange and the extent of apparent divergence in the long line pairs exchanges with ...

Adaptive Dynamics and Optical Illusion on Schröder's Stair

Effect of U-Turn in Reinforced Concrete Dog-Legged Stair Slabs

Reinforced concrete stair slabs with mid landings i.e. Dog-legged shaped are conventionally designed as per specifications of standard codes of practices which guide about the effective span according to the varying support conditions. Presently, the behavior of such slabs has been investigated using Finite Element method. A single flight stair slab with landings on both sides and supported at ...

Validation of a home safety questionnaire used in a series of case-control studies

OBJECTIVE To measure the validity of safety behaviours, safety equipment use and hazards reported on a questionnaire by parents/carers with children aged under 5 years participating in a series of home safety case-control studies. METHODS The questionnaire measured safety behaviours, safety equipment use and hazards being used as exposures in five case-control studies. Responses to questions ...

Create self-moving objects using hollow-face illusion

This paper presents a novel approach for creating self-moving objects using hollow-face illusion. Given a clip of character animation, our approach generates a static object. Looking at the object at different views, the similar deformation can be observed. To accomplish this challenging mission, we give qualitative and quantitative analysis of hollow-face illusion. Methodology in computer visi...