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Using otsu's threshold selection method for eliminating terms in vector space model computation
(2013-12-01)
Visualization techniques have proved to be valuable tools to support textual data exploration. Dimensionality reduction techniques have been widely used to produce visual representation of document collections. Focusing ...
Automatic segmentation of digital images applied in cardiac medical images
(2010-07-09)
The digital image processing has been applied in several areas, especially where it is necessary use tools for feature extraction and to get patterns of the studied images. In an initial stage, the segmentation is used to ...
A comparative study between recent wavelet nonthresholding methods and the well-established spectral subtractive and statistical-model-based algorithms for speech enhancement under real noisy conditions
(Ieee, 2016-01-01)
In this paper, a comparative study between current wavelet nonthresholding methods for speech enhancement and the well-established spectral subtractive and statistical-modelbased algorithms is performed. The development ...
On the intermittency of sediment transport in conditions near the threshold of motion
(2015)
The dynamics of sediment particles in a
at bed channel is mainly controlled by the
coherent structures of the turbulent boundary layer, as intense velocity
uctuations
increase the instantaneous bed shear stress and ...
Geotechnical and structural behavior of the railroad track in large-scale apparatus
(2009-12-01)
This paper analyses the static and dynamic behavior of the railroad track model in laboratory. Measurements of stresses and strains on a large-scale railroad track apparatus were studied. The model includes: compacted soil, ...
Application of image processing techniques to automate the seed vigor assessment process in soybean seedlings
(Universidade Federal Fluminense (UFF)Rio de Janeiro, 2013)
Seed vigor is a quantitative or qualitative value that describes a seedlot quality based on their growth, giving information of importance in commercial and research areas. A study was performed in order to automate the ...
Statistical Characterization of the Intermittency of Bedload Transport in Conditions Near the Threshold of Motion
(2015)
The dynamics of sediment particles in a flat bed channel is mainly determined by near bed coherent
structures of the turbulent boundary layer. These vortices are characterized by intense velocity
fluctuations, which ...
Stochastic lattice model describing a vector-borne disease
(Sociedade Brasileira de FísicaÁguas de Lindóia, 2013-05-13)
We employ the approach of stochastic dynamics to describe the dissemination of vector-borne diseases such as
dengue, and we focus our attention on the characterization of the threshold of the epidemic. The coexistence
space ...
DN interaction from the Jülich meson-exchange model
(2012-05-10)
The DN interaction is studied in close analogy to the meson-exchange K̄N potential of the Jülich group using SU(4) symmetry constraints. The model generates the Λ c(2595) resonance dynamically as a DN quasi-bound state. ...