A small size elliptically tapered slot antenna (ETSA) fed by coplanar waveguide (CPW) for ultra-wideband (UWB) applications is proposed. It is printed on an FR4 substrate and occupies a size of 37×34×0.8 mm. A pair of quarter circular shapes is etched on the radiator to reduce the size. To overcome the limitation of uniform corrugation, non-uniform corrugation is utilized to reduce the cross-po...

To provide information on the identification and quality evaluation of Q. variabilis virgin cork from Korea, qualitative anatomical characteristics were observed by optical scanning electron microscopy compared with those suber reproduction Portugal. showed a narrower growth ring than suber. A dark-brown zone sclereids was found only in cork. The lenticular channel is larger that distinct bound...

The folded plate structure is a structural form that increases bending rigidity and strength by folding the plate. When plane bent in waves, in-plane stiffness wave orthogonal direction, but extremely decreases because meandering like spring direction. Since shell structures resist external forces mainly forces, it considered there an appropriate arrangement of corrugations according to flow wh...

Love-type wave generation in a fiber-reinforced medium placed over an inhomogeneous orthotropic half-space is analysed. The upper and lower boundary surfaces of the fiber reinforced medium are periodically corrugated. Inhomogeneity of half-space is caused by variable density and variable shear modules. Displacement components for layer and half-space are derived by applying separable variable t...

Perceived depth is conveyed by multiple cues, including binocular disparity and luminance shading. Depth perception from luminance shading information depends on the perceptual assumption for the incident light, which has been shown to default to a diffuse illumination assumption. We focus on the case of sinusoidally corrugated surfaces to ask how shading and disparity cues combine defined by t...