The problem of real-time photorealistic imaging of digital terrain is discussed. New technique for specifying digital terrain by scalar perturbation functions without its approximation by polygons is considered. A recursive algorithm for object space subdivision with masking of invisible surfaces and an effective technique of projective transformation for perspective imaging are proposed. The p...

many of the great persian poems have powerful narrative structure and they transfer ideas and concepts from the language of different real or symbolic characters. one poem that is categorized in this field is  chahar chaman, a poem by shahdaie shirzi. this article aims at answering the question that what kind of belief and thought are each of the symbolic characters going to present? and how do...

We prove a law of the iterated logarithm for stable processes in a random scenery. The proof relies on the analysis of a new class of stochastic processes which exhibit long-range dependence.