In e ective supergravity theories following from the superstring, a modulus eld can quite naturally set the neccessary initial conditions for successful cosmological in ation to be driven by a hidden sector scalar eld. The leading term in the scalar potential is cubic hence the spectrum of scalar density perturbations neccessarily deviates from scale-invariance, while the generation of gravitat...

Numerical experiments with the one dimensional inviscid Burgers equation show that filtering the solution at each time step in a way similar to CVS (Coherent Vortex Simulation) gives the solution of the viscous Burgers equation. The CVS filter used here is based on a complex-valued translationinvariant wavelet representation of the velocity, from which one selects the wavelet coefficients havin...

J. Lepowsky and R. L. Wilson initiated the approach to combinatorial Rogers-Ramanujan type identities via the vertex operator constructions of representations of affine Lie algebras. In this approach the first new combinatorial identities were discovered by S. Capparelli through the construction of the level 3 standard A (2) 2 -modules. We obtained several infinite series of new combinatorial i...

A supersymmetric hybrid potential model with low energy supersymmetry breaking scale (MS ∼ 1 − 10Tev) is presented for both dark matter and dark energy. Cold dark matter is associated with a light modulus field (∼ 10−100Mev) undergoing coherent oscillations around a saddle point false vacuum with the presently observed energy density (ρ0 ∼ 10 eV ). The latter is generated by its coupling to a l...

Received Apr 3, 2012 Revised May 19, 2012 Accepted June 4, 2012 The research assessed and examined the mechanical properties of the Soil Cement Interlocking brick (SCI) to provide the information for the possible and appropriate development and revision of the (SCI) brick due to the substantial benefits which can be obtained by improving these sorts of bricks .Therefore, drastic efforts and acc...

OBJECTIVES Implant surface modifications are intended to enhance bone integration. The objective of this study was to assess the effect of different surface treatments on the resistance to hydrothermal degradation, hardness and elastic modulus of a 3Y-TZP ceramic used for dental implants. METHODS Samples grouped according to their surface morphologies (AS, as-sintered; C, coated; P, dry-polis...

Atomistic simulations were used to calculate the isothermal elastic properties for b-, a-, and d-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine ~HMX!. The room-temperature isotherm for each polymorph was computed in the pressure interval 0<p<10.6 GPa and was used to extract the initial isothermal bulk modulus Ko and its pressure derivative using equations of state employed previously in exper...

In this paper, we identify the Young’s modulus and residual stress state of a free-standing thin aluminum membrane, used in MEMS radio-frequency (rf) switches. We have developed a new methodology that combines a membrane deflection experiment (MDE) and three-dimensional numerical simulations. Wafer-level MDE tests were conducted with a commercially available nanoindenter. The accuracy and usefu...