Some Integrable Systems in Nonlinear Quantum Optics

In the paper we investigate the theory of quantum optical systems. As an application we integrate and describe the quantum optical systems which are generically related to the classical orthogonal polynomials. The family of coherent states related to these systems is constructed and described. Some applications are also presented.Comment: 27 page

UNSUPERVISED SIGNAL SEGMENTATION BASED ON TEMPORAL SPECTRAL CLUSTERING

ABSTRACT This paper presents an approach for applying spectral clustering to time series data. We define a novel similarity measure based on euclidean distance and temporal proximity between vectors. This metric is useful for conditioning matrices needed to perform spectral clustering, and its application leads to the detection of abrupt changes in a sequence of vectors. It defines a temporal segmentation of the signal. When the input to the algorithm is a speech signal, we further process the segments and achieve their labeling in one of three phonetic classes: silence, consonant or vowel. When the input signal is a video stream, the algorithm detects scene changes in the sequence of images. Our results are compared against classic unsupervised and supervised techniques, and evaluated with the phonetically labeled multi-language corpus OGI-MLTS and the video database of the french video indexing campaign ARGOS

Aproveitamento do caroço do açaí como substrato para a produção de enzimas por fermentação em estado sólido.

bitstream/CNPDIA-2010/12625/1/BPD30-2009.pd