We show that there exist solutions of drift-diffusion equations in two dimensions with divergence-free super-critical drifts, that become discontinuous in finite time. We consider classical as well as fractional diffusion. However, in the case of classical diffusion and time-independent drifts we prove that solutions satisfy a modulus of continuity depending only on the local L norm of the drif...

We study nearest neighbor random walks in fixed environments of Z composed of two point types : ( 1 2 , 1 2 ) and (p, 1− p) for p > 1 2 . We show that for every environment with density of p drifts bounded by λ we have lim supn→∞ Xn n ≤ (2p − 1)λ, where Xn is a random walk in the environment. In addition up to some integer effect the environment which gives the greatest speed is given by equall...

The question of whether amplitude scaling ground motion (GM) records introduces bias is controversial in earthquake engineering. In this study, research formally defined with a focus on evaluating determining an engineering demand parameter (EDP) as result nonlinear response history analyses (NLRHA) when using scaled rather than unscaled GM that have the same level intensity. analysed structure...

Erosion of the southern Gold Coast beaches (SE Queensland, Australia) was exacerbated after the extension of the Tweed River training walls in the early 1960s. To achieve the objective of restoring and maintaining beach amenity, significant nourishment works have been undertaken in Coolangatta Bay over the past 30 years. Particularly, under the Tweed River Entrance Sand Bypassing Project (TRESB...

the result of wind dynamic (capacity and potential) is transport of soil or sediment particles and subsequent formative desert landforms based on the severity of erosion or sedimentation. the khartouran region, because of its geology, geomorphology and climatology conditions is a special place in the arid region on the closed basin of dasht-e-kavir. it is evident that the ecosystem balance of t...

When using statistical models (such as a classifier) in a streaming environment, there is often a need to detect and adapt to concept drifts to mitigate any deterioration in the model’s predictive performance over time. Unfortunately, the ability of popular concept drift approaches in detecting these drifts in the relationship of the response and predictor variable is often dependent on the dis...