In this paper, the simulation of the disturbance propagation through a large power system is performed on the WSCC 127 bus test system. The signal frequency analysis from several parts of the power system is performed by applying the Wavelet Transform (WT). The results show that this approach provides the system operators with some useful information regarding the identification of the power sy...

The Linear Time Frequency Analysis Toolbox is a Matlab/Octave toolbox for computational time-frequency analysis. It is intended both as an educational and computational tool. The toolbox provides the basic Gabor, Wilson and MDCT transform along with routines for constructing windows ( lter prototypes) and routines for manipulating coe cients. It also provides a bunch of demo scripts devoted eit...

in exploration seismology quality factor is widely used as a seismic attribute to identify anomalies related to attenuation, especially those caused by hydrocarbon. previous studies have indicated that seismic energy loss known as attenuation is greater for high frequency components of seismic data compared to the low frequency components. here the continuous wavelet transform is used to study ...

The present investigation is concerned with the deformation of thermoporoelastic half space with incompressible fluid as a result of inclined load of arbitrary orientation. The inclined load is assumed to be linear combination of normal load and tangential load. The Laplace and Fourier transform technique are used to solve the problem. The concentrated force, uniformly distributed force and a m...

$FNQRZOHGJHPHQWV 3 This Master's thesis is the result of my final project at the University of Karlskrona/Ronneby. There are many people whom I'd like to thank for their assistance during the project. First, I would like to thank Jens Augustsson and Erik Pavlica, working at SSPA Maritime Consulting, for their guidance and the possibility to gain knowledge in an exciting field of science. In thi...

In this paper, a study of quadratic transformations under Cohen‟s class is presented, to see the variations in resolution for performing time-frequency analysis of signals. The study concentrated on the analysis of linear chirp signals and nonstationary signals in presence of noise as well as without noise. The resolutions based on Wavelet Transform, Short Time Fourier Transform are analysed. T...

To generate an all in focus image, the Shape-FromFocus (SFF) is used. The SFF key is finding the optimal focus depth at each pixel or area in an image within sequence of images. In this paper two new focusing measure operators are suggested to be used for SFF. The suggested operators are based on modification for the state of art tool for time-frequency analysis, the Stockwell Transform (ST). T...