Understanding the temporal characteristics of data from low frequency radio telescopes is importance in devising suitable calibration strategies. Application time series analysis techniques to can reveal a wealth information that aid calibration. In this paper, we investigate singular spectrum (SSA) as an tool for data. We show intimate connection between SSA and Fourier techniques. develop rel...

A high-resolution, well-dated foraminiferal δO record from a shallow-water core drilled from the Gallipoli Terrace in the Gulf of Taranto (Ionian Sea), previously measured over the last two millennia, has been extended to cover 707 BC–AD 1979. Spectral analysis of this series, performed using singular-spectrum analysis (SSA) and other classical and advanced methods, strengthens the results obta...

Heart rate measurement employing photoplethysmography (PPG) is a prevalent technique for wearable devices. However, the acquired PPG signal often contaminated with motion artifacts, which need to be accurately removed. In cases where and accelerometer (ACC) spectra overlap at actual heart rate, traditional discrete Fourier transform (DFT) algorithms fail compute accurately. This study proposed ...

Submit Manuscript | http://medcraveonline.com Abbreviations: EQ: Earthquake; CS: Complex System; AE: Acoustic Emission; ETAS: Epidemic-Type Aftershock Sequence; B-G: Boltzman-Gibbs; PSHA: Probabilistic Seismic Hazard Analysis; SHA: Seismic Hazard Assessment; SOC: Self-Organized Criticality; NESM: Non-Extensive Statistical Mechanics; IFS: Iterated Function Systems; RP: Recurrent Plots; RQA: Recu...

L-band electromagnetic scattering from two-dimensional random rough sea surfaces are calculated by first- and second-order Small-Slope Approximation (SSA1, 2) methods. Both analytical and numerical computations are utilized to calculate incoherent normalized radar cross-section (NRCS) in mono- and bi-static cases. For evaluating inverse Fourier transform, inverse fast Fourier transform (IFFT) i...

Using the extension of Monte Carlo Singular System Analysis (MC SSA), based on evaluating and testing the regularity of the dynamics of the SSA modes against the colored noise null hypothesis, we demonstrate detection of oscillatory modes with period of about 27 months in records of monthly average near-surface air temperature from several European locations, as well as in the monthly North Atl...

Two hourly-sampled time-series of soil-gas radon concentrations of durations of the order of a year have been investigated for periodic and anomalous phenomena. These time-series have been recorded in locations having little or no routine human behaviour and thus are effectively free of significant anthropogenic influences. One measurement site, Sur-Frêtes, is located in the French Alps, with s...

Motor adaptation is a form of learning to re-establish desired movements in novel situations. To probe motor adaptation, one can replicate such conditions experimentally by imposing sustained perturbation during movement. Exposure perturbations initially causes an abrupt change relevant performance variables, followed gradual return baseline behaviour. The resulting time series exhibit persiste...

Methods in multivariate statistical analysis are essential for working with large amounts of geophysical data— data from observational arrays, from satellites or from numerical model output. In classical multivariate statistical analysis, there is a hierarchy of methods, starting with linear regression (LR) at the base, followed by principal component analysis (PCA), and finally canonical corre...