Non-uniform sampling is an interesting scheme that can outperforms the uniform sampling with low activity signals. With such signals, it generates fewer samples, which means less data to process and lower power consumption. In addition, it is well-known that asynchronous logic is a low power technology. This paper deals with the coupling between a non-uniform sampling scheme and a pattern recog...

A new algorithm is developed for voiced-unvoiced speech discrimination in noise. Short segments of speech are modeled as a sum of basis functions from a Gabor dictionary. In each iteration, a Gabor atom is fitted (using the matching pursuit algorithm) to the residual obtained by subtracting the best-fit Gabor atom from the previous residual. Multiple discriminant analysis is used to reduce the ...

We introduce novel approaches of graph decomposition based on optimal separators and atoms generated by minimal clique separators. The decomposition process is applied to co-word graphs extracted from Web Of Science database. Two types of graphs are considered: co-keyword graphs based on the human indexation of abstracts and terminology graphs based on semi-automatic term extraction from abstra...

Impedance Matching of Atomic Thermal Interfaces Using Primitive Block Decomposition Carlos A. Polanco a , Christopher B. Saltonstall b , Pamela M. Norris b , Patrick E. Hopkins b & Avik W. Ghosh a a Department of Electrical and Computer Engineering , University of Virginia , Charlottesville , Virginia b Department of Mechanical and Aerospace Engineering , University of Virginia , Charlottesvill...

Experimental results supported by density functional theory calculations show carbonate formation and reaction on atomic oxygen precovered Au(111). Oxygen mixing is observed in temperature-programmed desorption measurements when a Au(111) precovered with 16O is exposed to isotopically labeled CO2 (C18O2). The presence of 16O18O is attributed to surface carbonate formation and decomposition at s...

Modularity in ontologies Modern ontologies can get quite large as well as complex, which poses challenges to tools and users when it comes to processing, editing, analyzing them, or reusing their parts. This suggests that exploiting modularity of ontologies might be fruitful, and research into this topic has been an active area for ontology engineering. Much recent effort has gone into developi...

To improve the measurement and differentiation of normal and abnormal brain function we are developing new methods to decompose multichannel (electroencephalogram) EEG into elemental components or “atoms.” We estimate EEG atoms using multiway analysis, specifically parallel factor analysis or PARAFAC for modeling. Activation sequences of EEG atoms can identify functional brain networks dynamica...

In the present article, we establish a definition of atomic systems in Krein spaces, specifically, fundamental tools theory formalism spaces and give complete characterization them. We also show that do not depend on decomposition space.

This paper is concerned with the construction of generalized Banach frames on homogeneous spaces. The major tool is a unitary group representation which is square integrable modulo a certain subgroup. By means of this representation, generalized coorbit spaces can be defined. Moreover, we can construct a specific reproducing kernel which, after a judicious discretization, gives rise to atomic d...