Radiator arrays with Dynamic Polarization Control (DPC) and 2D beam steering enable polarization matching to the receiver antenna regardless of its polarization, orientation, and location. A fully integrated 122.9 GHz 2x2 DPC multi-port driven phased array radiates all linear polarizations (0°-180° polarization angles) with axial ratios above 14 dB, and controls the axial ratio from 1.2 dB (cir...

in this study, the corrosion resistance of a bituminous coating reinforced with different ratios ofnanoclay pigment was studied. to make nanocomposite coatings, 2, 3, and 4 wt.% of clay (cloisitena+) were incorporated into water emulsified bitumen. the coatings were applied to steel 37. opticalmicroscopy and x-ray diffraction (xrd) were used to characterize the nanocomposite structure. inorder ...

When the polarization-maintaining fiber (PMF) delay coil of a optic current transformer (FOCT) is impacted, external forces on optical fibers and change their birefringence may lead to extra phase errors during propagation signals in fibers. These increase error measurement. In paper, environmental impact mechanisms influencing PMF FOCT were investigated with mathematical model. The method repl...

Corrosion resistance of iron can be drastically improved by addition of passivating alloying elements. A supersaturated solid solution of Fe-25at%Sn was produced by mechanical alloying of commercially pure iron and tin powders for 24 hours using a planetary ball mill. Electrochemical measurements were performed on cold compacted unsintered specimens.. XRD investigation on produced alloy showed ...

The degree of polarization in L dwarfs of spectral types L0–L6 resulting from dust scattering in a rotationinduced oblate photosphere is calculated. Assuming that forsterite is the main condensate, we derive the atmospheric dust distribution for different spectral types based on a chemical equilibrium model. The degree of polarization at optical is then calculated using a single-scattering mode...

In [4] it was conjectured that for all unit vectors u1, · · · , ud in Rd, X (u1, · · · , ud) := sup x∈Rd, |x|2=d d ∏ i=1 〈x, ui〉 ≥ 1 with equality occurring iff u1, · · · , ud are orthonormal. We relate this to a conjecture about solutions of Ay = y−1, where A = (〈ui, uj〉), and show that if the conjecture fails then the u1, · · · , ud minimizing X must be linearly dependent. We also show X (u1,...

This paper presents a polarized phase semantics, with respect to which the linear fragment of second order polarized linear logic of [Laurent 99] is complete. This is done by adding a topological structure to Girard’s phase semantics [Girard 87]. The topological structure results naturally from the categorical construction developed in [Hamano-Scott 07]. The polarity shifting operator ↓ (resp. ...

Ten years of rocketsonde observations of wind and temperature in the 28-57 km height range at 12 stations (spanning 8øS to 76øN) were analyzed. The aim was to determine the geographical and seasonal variation of statistics relating to the propagation of inertia-gravity waves. As noted by earlier investigators, there is a clear tendency for the rocketsonde hodographs to display clockwise rotatio...