I review our recent attempts toward obtaining the MSSM from string orbifold compactification. The required constraints are the existence of three families and R parity, vectorlike exotics, one pair of Higgs doublets, and the SU(5)′ hidden sector for dynamical breaking of SUSY toward a GMSB scenario. We also comment on the threshold correction which are influenced by a power law evolution of gau...

Practically, e-voting should comply with the social acceptance, technology and law. Many believe that e-voting is better than manual voting, as the former has less manual involvement. It is also believed that it is more secure and transparent. However, some security attacks may be launched which result in breaking both voting and e-voting requirements. In this paper, we discuss some aspects of ...

We show theoretically that a domain-wall annihilation in two-component Bose-Einstein condensates causes tachyon condensation accompanied by spontaneous symmetry breaking in a two-dimensional subspace. Three-dimensional vortex formation from domain-wall annihilations is considered a kink formation in subspace. Numerical experiments reveal that the subspatial dynamics obey the dynamic scaling law...

The process of breaking inviscid incompressible flows along a rigid body with slipping boundary conditions is studied. Such may be considered compressible on the surface, where normal velocity vanishes. It main reason for formation singularity gradient component parallel to border. Slipping are studied analytically in framework two- and three-dimensional Prandtl equations. Criteria catastrophe ...

A two components mixture fluid which complies with the gamma law is considered in the framework of inflation with finite temperature. The model is developed for a quartic scalar potential without symmetry breaking. The radiation energy density is assumed to be zero when inflation starts and remains below the GUT temperature during the inflationary stage. Furthermore, provides the necessary numb...

We consider a natural new inflationary model in broken supergravity based on an R symmetry. The model predicts a concrete relation between the amplitude of primordial density fluctuations and the scale of supersymmetry breaking. The observed value of the density fluctuations is obtained for the gravitino mass of order the weak scale along with a power-law spectral index considerably less than o...

We show that relativistic strings of open and closed types in Minkowski space-time of dimension 3 and 4 have topologically stable singular points. This paper describes the structure of singularities, derives their normal forms, and introduces a local characteristic of singularity (topological charge), possessing a global law of conservation. Two other types of solutions (breaking and exotic str...

although, grapevines do not have a high chilling requirement, its fulfillment is critical for normal development of the vines. in tropical and subtropical regions such as farrashband, in the south of iran, there is no adequate winter chilling to release bud dormancy in grapevines. so it is necessary to consider the effect of chemical dormancy–breaking agents on bud dormancy. in the present rese...

Abstract Law-enforcement agencies are increasingly able to leverage crime statistics make risk predictions for particular individuals, employing a form of inference that some condemn as violating the right be “treated an individual.” I suggest encodes agents’ entitlement fair distribution burdens and benefits rule law. Rather than precluding statistical prediction, it requires citizens anticipa...

The complexity of health care means compliance failures are practically inevitable. How can the board protect itself and the organization?