A new steganographic method via the use of numeric data on public websites with a self-authentication capability is proposed. The proposed technique transforms a secret message into partial shares by Shamir’s (k, n)-threshold secret sharing scheme with n = k + 1. The generated k+1 partial shares then are embedded into the numeric items to be disguised as part of the website’s numeric content, y...

This paper shows an image/video application using topological invariants for human gait recognition. Using a background subtraction approach, a stack of silhouettes is extracted from a subsequence and glued through their gravity centers, forming a 3D digital image I . From this 3D representation, the border simplicial complex ∂K(I) is obtained. We order the triangles of ∂K(I) obtaining a sequen...

Transverse momentum spectra up to 4.5GeV/c were measured around midrapidity in Pb+Pb collisions at √ sNN = 17.3GeV, for π±, p, p̄ and K±, by the NA49 experiment. The nuclear modification factors RAA, RAA/pA and RCP were extracted and are compared to RHIC results at √ sNN = 200GeV. The modification factor RAA shows a rapid increase with transverse momentum in the covered region. The modification ...

In general there are two main approaches for overcoming the highdimensional and small sample size (SSS) problem. One is to apply feature extraction or selection to reduce the dimensionality, and then applying the reduced-dimensionality data set to classifier. The other is to modify the classifier design to be suitable for SSS problem. This study integrates the two approaches into a new K-neares...

A surface electromyographic (sEMG) signal includes important information on muscular activity and was recently widely used as an input signal in a myoelectric control system. In this manuscript, eight hand motions were classified using different extracted features from sEMG signals. The results of the experiment show that the combination of sample entropy (SampEnt), root mean square (RMS), myop...