The structure is said to be damaged if there a permanent shift in the post-event natural frequency of as compared with pre-event frequency. To assess damage structure, time-frequency approach that can capture and required. In this study, determine these frequencies, local maximum synchrosqueezing transform (LMSST) method employed. Through simulation results, we have shown traditional methods su...

The aim of the present work is to study the  $F$-transform over a generalized residuated lattice.  We discuss the properties that are common with the $F$-transform over a residuated lattice. We show that the $F^{uparrow}$-transform can be used in establishing a fuzzy (pre)order on the set of fuzzy sets.

this paper presents a new coding method for image compression based on jpeg2000 and contourlet transform. jpeg2000 standard is a common standard that uses discrete wavelet transform (dwt) in the compression process. the main problems of dwt are failure to detect curved edges in image and its shortage representation of the ridge and furrow patterns which cause deficiency and block artifacts rema...

This study aims to develop a track-side online monitoring system for malfunction detection in the suspension controllers of maglev trains during their in-service operation. The hardware module includes two arrays accelerometers deployed on an F-type rail and data acquisition unit. software consists codes three functions: (i) identification time intervals relation passage each controller via syn...

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In this paper, our goal is first to investigate the behavior of reassignment operators used in synchrosqueezing transforms applied multicomponent signals made superposition amplitude and frequency modulated modes. Indeed, while these are associated with instantaneous estimators very accurate on specific types modes, quality former worsens drastically when modes depart from ideal case they desig...

Time–frequency analysis is central to signal processing, with standard adaptation to higher dimensions for imaging applications, and beyond. However, although the theory, methods, and algorithms for stationary signals are well developed, mathematical analysis of non-stationary signals is almost nonexistent. For a real-valued signal defined on the time–domain R, a classical approach to compute i...