In this paper we discuss a technique for presenting textual information within visualizations and for enabling users to interact with the text. Our method relies on shading images using text-based dither matrices; users extract text by effectively enlarging the dither matrices to the point where text becomes legible. Transitions between matrix sizes are carried out step by step and can be imple...

background: in iran, architectures are often unaware of the risk of radon inhalation and how to reduce radon levels. furthermore, radon considerations are not implemented in construction methods, construction materials and building utilization by regulatory authorities. materials and methods: in this study after reviewing the meteorological changes of ramsar over the past 50 years (1955-2005), ...