the shape of a submerged vane is a major factor in the design of a vane system and affects the performance and secondary currents generated by the vanes. this study investigated the effect of five vane shapes on bed sediment processes (local scour at the leading edge and transverse distribution of sediment downstream of the vanes) at four flow intensities for a total of 20 experiments. the resu...

The light absorption and scattering of underwater impurities lead to poor imaging quality. existing data-driven based image enhancement (UIE) techniques suffer from the lack a large-scale dataset containing various scenes high-fidelity reference images. Besides, inconsistent attenuation in different color channels space areas is not fully considered for boosted enhancement. In this work, we con...

Heterogeneity in narrowing among individual airways is an important contributor to airway hyperresponsiveness. This paper investigates the contribution of longitudinal heterogeneity (the variability along the airway in cross-sectional area and shape) to airway resistance (R(aw)). We analyzed chest high-resolution computed tomography scans of 8 asthmatic (AS) and 9 nonasthmatic (NA) subjects bef...

We consider the first passage percolation model on Z2. In this model, {t(e) : e an edge of Z2} is an independent identically distributed family with a common distribution F . We denote by T (0, v) the passage time from the origin to v for v ∈ R2 and B(t) = {v ∈ Rd : T (0, v) ≤ t}. It is well known that if F (0) < pc, there exists a compact shape BF ⊂ R2 such that for all ǫ > 0, tBF (1 − ǫ) ⊂ B(...