Quasiperiodic structures constructed by projection in two stages

Quasiperiodic Structures Obtained by the Projection Method

Quasiperiodic Tilings: A Generalized Grid–Projection Method

We generalize the grid–projection method for the construction of quasiperiodic tilings. A rather general fundamental domain of the associated higher dimensional lattice is used for the construction of the acceptance region. The arbitrariness of the fundamental domain allows for a choice which obeys all the symmetries of the lattice, which is important for the construction of tilings with a give...

Spectral and cepstral projection bases constructed by independent component analysis

The present paper addresses the question of the efficiency of Independent Component Analysis (ICA) as a statistical process for deriving optimal representational bases for the projection of spectrum and cepstrum in the context of Automatic Speech Recognition (ASR). Several decorrelation strategies have been applied on the log-spectrum and cepstrum to fulfill the practical need of a diagonal cov...

DNA prism structures constructed by folding of multiple rectangular arms.

Novel multiarm DNA structures were designed using two-dimensional DNA origami scaffolds, and these structures were folded into hollow three-dimensional (3D) structures by introducing connection strands into the arms. The opening of the prism structures was examined by high-speed AFM imaging, which showed the dissociation of the connecting arms in the 3D structures.

Spin Wave Specific Heat in Quasiperiodic Fibonacci Structures

The energy spectra of a variety of collective modes on quasiperiodic structures exhibit a complex fractal profile. Among the modes that have attracted particular attention in this context, are the spin wave spectra of quasiperiodic magnetic multilayers that obey a substitutional sequence of the Fibonacci type. They are described within the framework of the Heisenberg theory. In order to have a ...