emissions from fossil fuel combustion pose a serious threat to public health and =pose the need for animproved monitoring of polycyclic aromatic hydrocarbons (pars), a major class of persistent organicpollutants. for this purpose the present study reports an investigation of the electronic structure of pyrene byuse of different chemical models we also made a comparison between different chemica...

The problem of propagation of plane wave including body and surface waves propagating in a transversely isotropic half-space with a depth-wise axis of material symmetry is investigated in details. Using the advantage of representation of displacement fields in terms of two complete scalar potential functions, the coupled equations of motion are uncoupled and reduced to two independent equations...

Most existing hashing methods adopt some projection functions to project the original data into several dimensions of real values, and then each of these projected dimensions is quantized into one bit (zero or one) by thresholding. Typically, the variances of different projected dimensions are different for existing projection functions such as principal component analysis (PCA). Using the same...

Regularization of ill-posed problems has been applied in various ways to surface reconstruction problems. Typically the smoothness term has been found in an ad hoc manner. In this work the a priori knowledge of the surface is used to construct the smoothness terms. If all surface normals are considered equally probable, different smoothness terms can be derived for different projections using B...

in this paper we study isotropic lagrangian submanifolds , in complex space forms . it is shown that they are either totally geodesic or minimal in the complex projective space , if . when , they are either totally geodesic or minimal in . we also give a classification of semi-parallel lagrangian h-umbilical submanifolds.

Percolation phenomena play central roles in the eld of poroelasticity, where two distinct sets of percolating continua intertwine. A connected solid frame forms the basis of the elastic behavior of a poroelastic medium in the presence of external con ning forces, while connected pores permit a percolating uid (if present) to in uence the mechanical response of the system from within. The presen...

Assume that R is a regular local ring that contains an infinite field and whose field of fractions K has charactertistic 6= 2. Let X be an exceptional projective homogeneous scheme over R. We prove that in most cases the condition X(K) 6= ∅ implies X(R) 6= ∅. 2010 Mathematics Subject Classification: 14M17, 20G35