In this paper energy bands and Berry curvature of graphene was studied. Desired Hamiltonian regarding the next-nearest neighbors obtained by tight binding model. By using the second quantization approach, the transformation matrix is calculated and the Hamiltonian of system is diagonalized. With this Hamiltonian, the band structure and wave function can be calculated. By using calculated wave f...

In this letter, we extend the eigenfilter filter design method for the design of two-dimensional th band lowpass filters, with the filter impulse response having quadrantal or diagonal symmetry. We show that imposing the th band and symmetry constraints puts restrictions on the possible choices of the matrix . We identify sufficient conditions on , and show a class of matrices satisfying those ...

We prove the universality for the eigenvalue gap statistics in the bulk of the spectrum for band matrices, in the regime where the band width is comparable with the dimension of the matrix, W ∼ N . All previous results concerning universality of non-Gaussian random matrices are for meanfield models. By relying on a new mean-field reduction technique, we deduce universality from quantum unique e...

Spectral transmittance in optical microscopic image was estimated from multi-band image taken through five broad band filters based on Wiener estimation method. Matrix for Wiener estimation was calculated using the 16 spectral transmittances of color transparencies measured in advance by spectral photometer. The optical microscope adjusted for monochrome digital camera (Kodak DCS420m, 1536x1024...

Snakebite is a common problem especially in tropical areas all over the world includingIran. Echis carinatus as one of the most dangerous Iranian snakes is spreading in this countryexcluding central and northwest provinces. In this study gelatinase and fibrinogenolyticproperties as two disintegrating matrix metalloproteinase enzymes were evaluated by a strongclear halo between 56-72 kDa in addi...

In this paper, a digital watermarking technique using new signal processing theory called compressive sensing have been implement and analysis for different embedding monochromic watermark images into color cover images. In order to implement of technique, first convert watermark image into its sparse domain and then convert into linear measurement vector using basis matrix and measurement matr...