Solvent-grown microcrystals of long polymethylene compounds packing in the 0 ± methylene subcell are found to have some of the defect structures seen for crystalline polyethylene. Crystals composed either of rectangular layers or of oblique layers both exhibit the growth around a screw dislocation characterized earlier by other workers. In addition, rectangular layer crystals of orthorhombic n-...

Following previous work, we identify a symmetry Snat that generalizes the concept of custodial symmetry, keeping under control deviations from the Standard Model (SM). To realize Snat linearly, the space of gauge fields has to be extended. Covariant constraints formulated in terms of spurions reduce Snat back to SU (2)L × U(1)Y . This allows for a covariant introduction of explicit Snat-breakin...

G-frames are natural generalizations of frames which cover many other recent generalizations of frames, e.g., bounded quasi-projectors, frames of subspaces, outer frames, oblique frames, pseudo-frames and a class of timefrequency localization operators. Moreover, it was shown that g-frames are equivalent to stable space splittings. In this paper, we study the stability of g-frames. We first pre...

The effect of localized roughness on a Ma=4.8 boundary-layer and its instability is investigated by means of unsteady direct numerical simulations. The occurrence of special flow features, such as shocks, boundary-layer separation zones, streamwise vortices and streamwise streaks behind a three-dimensional square-shaped roughness element are discussed. In order to investigate the convective ins...

Thin film silicon solar cells are an attractive option for the production of sustainable energy but their low response at long wavelengths requires additional measures for absorption enhancement. The most successful concepts are based on light scattering interface textures whose understanding is greatly facilitated by considering a superposition of periodic textures that diffract the light into...

We consider a Sturm-Liouville boundary value problem in a bounded domain D of Rn. By this is meant that the differential equation is given by a second order elliptic operator of divergent form in D and the boundary conditions are of Robin type on ∂D. The first order term of the boundary operator is the oblique derivative whose coefficients bear discontinuities of the first kind. Applying the me...

Background: Several studies have examined the reflex response of ankle musculature to sudden inversion in noninjured and injured subjects. To date, there have been no studies to determine the effect of versatile degrees & conditions of perturbation on the ankle musculature latency. The purpose of this study was to measure and determine whether there was a difference in ankle musculature latency...

We study tree level corrections to precision electroweak physics in the recently proposed Higgsless models in warped space. Such models inherit from their similarity with technicolor theories a large contribution to the oblique parameters, S in particular. We show that it is possible to suppress S using brane induced kinetic terms and unequal left-right bulk gauge couplings, paying the price of...

Abstract In a recent paper, we introduced a new Little Higgs model, which contains the gauge structure SU(2)3 × U(1), embedded in an approximate global SO(5) × SO(5) symmetry. After breaking to the standard model, SU(2)L × U(1)Y , this produces two heavy Z ′ bosons and two heavy W ′± bosons, along with a single Standard Model-like Higgs scalar. The unique feature of the model was that it was po...

A rigorous semianalytical Floquet analysis is proposed for modeling space–time-modulated metasurface and determining the scattered fields in terms of their harmonic components. The method based on generalized sheet transition conditions (GSTCs) treating a as spatial discontinuity with zero thickness. described Lorentzian electric magnetic surface susceptibilities, both tangential normal to surf...