this is a survey article on centralizers of finite‎ ‎subgroups in locally finite‎, ‎simple groups or lfs-groups as we‎ ‎will call them‎. ‎we mention some of the open problems about‎ ‎centralizers of subgroups in lfs-groups and applications of the‎ ‎known information about the centralizers of subgroups to the‎ ‎structure of the locally finite group‎. ‎we also prove the‎ ‎following‎: ‎let $g$ be...

The anisotropic nature of fibre-reinforced composite materials is often not accounted for during the design process cruciform specimens. Here, response specimens depends on both - layup configuration and variations in biaxial loading conditions. This work studies effect anisotropy uniformity developed multi-axial stress state For that, a combination 3D finite element analytical models are used ...

Locally Decodable codes(LDC) support decoding of any particular symbol of the input message by reading constant number of symbols of the codeword, even in presence of constant fraction of errors. In a recent breakthrough [9], Yekhanin constructed 3-query LDCs that hugely improve over earlier constructions. Specifically, for a Mersenne prime p = 2−1, binary LDCs of length 2O(n1/t) for infinitely...

Quintessence, a time-varying energy component that may account for the accelerated expansion of the universe, can be characterized by its equation of state and sound speed. In this paper, we show that if the quintessence density is at least 1% of the critical density at the surface of last scattering the cosmic microwave background anisotropy can distinguish between models whose sound speed is ...

The combination of detections of anisotropy in cosmic microwave background radiation and observations of the large-scale distribution of galaxies probes the primordial density fluctuations of the universe on spatial scales varying by three orders of magnitude. These data are found to be inconsistent with the predictions of several popular cosmological models. Agreement between the data and the ...

In this paper we investigate stiffness in micromagnetic simulations in the ODE context. We introduce some pragmatic measures of stiffness based on the total number of time steps taken by a non stiff and a stiff method to solve the LLG equation, and the cost of each method per time step. We present a family of micromagnetic calculations that simulates materials with strong exchange coupling betw...

We investigate theoretically the resonant inelastic x-ray scattering (RIXS) at the K edge of Si with systematically varying transfered-momenta, incident-photon energy and incidentphoton polarization. We confirm theoretically the anisotropy of a RIXS and provide a quantitative explanation of a experiment on RIXS at the K edge of Si (Y. Ma et al., Phys. Rev. Lett. 74, 478 (1995)). We clarify the ...

The relaxation of strain in compositionally step-graded InxGa12xAs layers grown on GaAs~001! has been examined with cathodoluminescence ~CL! wavelength and linearly polarized imaging approaches. A polarization anisotropy in CL is found, and this correlates with spectral shifts in the peak positions of excitonic luminescence. Varying asymmetries in misfit dislocation densities from transmission ...

A directional data set of bare soil and alfalfa acquired using the Swiss Field Goniometer during the DAIS Experiment 1999 (DAISEX’99) campaign is preprocessed and analyzed for its quality. Two different normalization methods to derive anisotropy factors are tested and discussed. The possible effect of varying reflectances on the retrieval of vegetation parameters due to changing sun and viewing...