erosion by wind is one of the most important factors in desert environment. prevailing winds can shift sand dunes and affect their accumulation. also, wind regime determines the direction of sand dune mobility. the aim of this research was to investigate sand drift potential using sand movement models. for this research, wind data between 1986 and 2005 from the meteorological station of yazd we...

This paper deals with the problem of providing missile guidance information by tracking a target object from a sequence of image frames captured from a forward looking in-frared (FLIR) camera mounted inside a missile moving directly towards the target. Many conventional image based trackers trace key reference points over an image sequence using simple correlation processes. However, the presen...

We consider piecewise-deterministic Markov processes such as the Bouncy Particle sampler, on target densities with polynomial tails. Using direct drift condition methods, we provide bounds order of processes’ convergence rate to stationary, both one-dimensional and high-dimensional state spaces, in total variation distance f-norm.

We consider a class of adaptive MCMC algorithms using a Langevintype proposal density. We prove that these are algorithms are ergodic when the target density has exponential tail behaviour. Unlike previous results, our approach does not require bounding the drift function.

PURPOSE To examine the quality of binocular coordination of saccades in children with various types of strabismus and the effect of strabismus surgery. METHODS Eight subjects were tested (5-15 years old): five with convergent strabismus, three with divergent strabismus. A standard saccade paradigm was used to elicit horizontal saccades to target LEDs (5 degrees to 15 degrees ). Saccades from ...

A complex interaction of controllable and uncontrollable factors is involved in aerial application of crop production and protection materials. Although it is difficult to completely characterize spray deposition and drift, these important factors can be estimated with appropriate sampling protocol and analysis. Application height is an important variable influencing off-target spray drift, but...

In statistics it is often assumed that sample observations are independent. But sometimes in practice, observations are somehow dependent on each other. Spatiotemporal data are dependent data which their correlation is due to their spatiotemporal locations.Spatiotemporal models arise whenever data are collected across bothtime and space. Therefore such models have to be analyzed in termsof thei...