Abstract Using the framework of random walks in random scenery, Cohen and Samorodnitsky (2006) introduced a family of symmetric α-stable motions called local time fractional stable motions. When α = 2, these processes are precisely fractional Brownian motions with 1/2 < H < 1. Motivated by random walks in alternating scenery, we find a complementary family of symmetric α-stable motions which we...

Let X(t) (t ∈ R+) be a stable process in a random scenery. The Hausdorff dimension of certain level sets is determined and the existence of the local time of X(t) is proved. AMS Subject Classification (1991): 60G17, 60G18.

television viewing (tv) is associated with an in-creased risk of type 2 diabetes, cardiovascular dis-eases, and all-cause mortality (1). in particular, ex-cessive tv viewing was found to be more preva-lent among older adults aged over 55 years than among younger age groups (2). moreover, it has been emphasized the importance of identifying at-risk populations with excessive tv viewing time and ...

This paper presents a sketch-based interface for interactive modification of architectural design prototypes inside a virtual environment. The user can move around in the scenery and create line drawings to add annotations. In order to modify or extend the scenery, she can sketch command symbols, which are then recognized by the application to trigger the application defined commands. This allo...