Showing 21 - 26 results of 26 for search '"Fourier analysis"', query time: 0.06s Refine Results
  1. 21

    Image Evolution Using 2D Power Spectra by Michael Gircys, Brian J. Ross

    Published 2019-01-01
    “…We refine fitness measures based on Fourier analysis and spatial frequency and apply them within a genetic programming environment for image synthesis. …”
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  2. 22

    Analysis Methods for Aerodynamic Instability Detection on a Multistage Axial Compressor by Baofeng Tu, Xinyu Zhang, Jun Hu, Ming Zhong, Bing Xiong

    Published 2021-01-01
    “…Compared with the traditional harmonic Fourier analysis methods, the harmonic Fourier mean amplitude analysis method can capture the detail of the pressure signal more accurately and it can effectively prevent instability misjudgment. …”
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  3. 23

    Catastrophic and violent tornadoes: a detailed review of physical-mathematical models by Sergey A. Arsen’yev, Lev V. Eppelbaum

    Published 2024-11-01
    “…A method for nonstochastic long-term forecasting using the pattern recognition theory and Fourier analysis has recently been developed. A close correlation between the tidal forces of the Sun–Moon–Earth gravitational system and the total number of tornadoes per year was found. …”
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  4. 24

    Damage Identification by Using a Self-Synchronizing Multipoint Laser Doppler Vibrometer by Chong Yang, Yu Fu, Jianmin Yuan, Min Guo, Keyu Yan, Huan Liu, Hong Miao, Changchun Zhu

    Published 2015-01-01
    “…Mode shape curvature is calculated by numerical interpolation and windowed Fourier analysis. The results show that the artificial crack can be identified precisely from the change of natural frequencies and the difference of mode shape curvature squares.…”
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  5. 25

    Distinctive morphological variation of saccular otoliths in relation to hermaphroditism type in Sarpa salpa and Serranus scriba (Teleostei: Perciformes) from the Mediterranean Sea... by Bakkari Wided, Mejri Marwa, Bouriga Nawzet, Mili Sami, Chalh Abdellah, Shahin Adel AB, Quignard Jean-Pierre, Trabelsi Monia, Faleh Abderraouf Ben

    Published 2024-09-01
    “…This study aimed to describe and compare the morphological characteristics of saccular otoliths (sagittae) in the protandrous hermaphrodite Sarpa salpa and the synchronous hermaphrodite Serranus scriba collected from the Bizerte site located in northwestern Tunisia, and to examine the effect of hermaphroditism type on the otolith shape and size at the inter- and intraspecific levels, using elliptical Fourier analysis. At the interspecific level, a significant bilateral asymmetry in shape was observed between the left and right otoliths. …”
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  6. 26

    Scaling and intermittent properties of oceanic and atmospheric <i>p</i>CO<sub>2</sub> time series and their difference in a turbulence framework by K. Robache, F. G. Schmitt, Y. Huang, Y. Huang

    Published 2025-01-01
    “…Scaling exponents are estimated through Fourier analysis, and their average quantities were considered globally for all parameters, as well as for different ecosystems such as coastal shelf, coral reefs and open ocean. …”
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