While a broadband metamaterial perfect absorber (MPA) has been implemented and proposed intensively in recent years, an ultra-broadband perfect absorber with polarization selectivity has not been realized in literature. In this work, we propose a configuration of polarization-selective (PS) MPA with ultra-wide absorption bandwidth. The aluminum wire grid is integrated on top of the ultrathin-me...

A perfect modeling framework for the systematic study of the effect of filter shape on the resolved scales of motion in large eddy simulation is developed. The effects of the explicit and implicit filtering approaches in large eddy simulation are considered. A simple model for smooth filtering is proposed and the related effects are analyzed. The proposed approach provides an effective research...

in wireless sensor networks (wsns), localization algorithms could be range-based or range-free. the approximate point in triangle (apit) is a range-free approach. we propose modification of the apit algorithm and refer as modified-apit. we select suitable triangles with appropriate distance between anchors to reduce pit test errors (edge effect and non-uniform placement of neighbours) in apit a...

To evaluate the accuracy of the lattice Boltzmann method with the zonal grid refinement for high Reynolds number turbulent flows, large eddy simulation of turbulent channel flows is carried out by the D3Q27 multiple-relaxation time lattice Boltzmann method with the imbalance-correction grid refinement method. Considering the continuity of the pressure and the momentum fluxes at the finer and co...

Rectangle Packing is considered a difficult NP-problem which has several application areas such as integrated circuit systems, and pallet packing. Generally, Rectangle Packing Problems consist of a set of rectangles for which a configuration must be found, the intention is to minimise the surface-area of the configurations bounding box. Existing research has predominantly investigated algorithm...

A computer-controlled display of random dots was used to study perceptions of depth. In this display, a field of stationary random dots surrounded a rectangular area in which random dots moved with uniform velocity in a single direction. The boundaries of this rectangle did not move. When dot motion was perpendicular to the longer boundary of the rectangle (occluded motion), the rectangle seeme...