The analysis of the photospheric velocity field is essential for understanding plasma turbulence in solar surface, which may be responsible driving processes such as magnetic reconnection, flares, wave propagation, particle acceleration, and coronal heating. Currently, only available methods to estimate velocities at photosphere transverse an observer's line sight infer flows from differences i...

Annihilation or reduction of each kind of noise blended in correct data signals is a field that has attracted many researchers. It is a fact that fuzzy theory presents full capability in this field. Fuzzy filters are often strong in smoothing corrupted signals, whereas they have simple structures. In this paper, a new powerful yet simple fuzzy procedure is introduced for sharpness reduction in ...

<p style='text-indent:20px;'>We study boundary determination for an inverse problem associated to the time-harmonic Maxwell equations and another isotropic elasticity system. We identify electromagnetic parameters Lamé moduli these two systems from corresponding measurements. In a first step we reconstruct Lipschitz magnetic permeability, electric permittivity conductivity on surface idea...

In this work we study the problem of Subspace Tracking with missing data (ST-miss) and outliers (Robust STmiss). We propose a novel algorithm, provide guarantee for both these problems. Unlike past on topic, current does not impose piecewise constant subspace change assumption. Additionally, proposed algorithm is much simpler (uses fewer parameters) than our previous work. Secondly, extend appr...

Multifractal Detrended Fluctuation Analysis stands out as one of the most reliable methods for unveiling multifractal properties, specially when real-world time series are under analysis. However, little is known about how several aspects, like artefacts during data acquisition process, affect its results. In this work we have numerically investigated performance applied to synthetic finite unc...