Zobrazeno 1 - 10
of 146
pro vyhledávání: '"García, O. E."'
Autor:
Korzeniowska, M. A., Garcia, O. E.
Long-range correlations manifested as power spectral density scaling $1/f^\beta$ for frequency $f$ and a range of exponents $\beta\in[0,2]$ are investigated for a superposition of uncorrelated pulses with distributed durations $\tau$. Closed-form exp
Externí odkaz:
http://arxiv.org/abs/2410.07249
A stochastic model for a superposition of uncorrelated pulses with a random distribution of amplitudes, sizes, and velocities is analyzed. The pulses are assumed to move radially with fixed shape and amplitudes decreasing exponentially in time due to
Externí odkaz:
http://arxiv.org/abs/2401.05198
Time delay and velocity estimation has been a widely studied subject in the context of signal processing, with applications in many different fields of physics. The velocity of fluctuation structures is typically estimated as the distance between two
Externí odkaz:
http://arxiv.org/abs/2311.16752
Publikováno v:
Phys. Rev. Research 5, L022066 (2023)
Power spectral density scaling with frequency $f$ as $1/f^\beta$ and $\beta \approx 1$ is widely found in natural and socio-economic systems. Consequently, it has been suggested that such self-similar spectra reflect the universal dynamics of complex
Externí odkaz:
http://arxiv.org/abs/2304.08371
A stochastic model is presented for a super-position of uncorrelated pulses with a random distribution of amplitudes, sizes, velocities and arrival times. The pulses are assumed to move radially with fixed shape and amplitudes decaying exponentially
Externí odkaz:
http://arxiv.org/abs/2210.09676
Statistical properties of the scrape-off layer (SOL) plasma fluctuations are studied in ohmically heated plasmas in the Alcator C-Mod tokamak. For the first time, plasma fluctuations as well as parameters that describe the fluctuations are compared a
Externí odkaz:
http://arxiv.org/abs/2005.02145
Turbulent motions due to flux-driven thermal convection is investigated by numerical simulations and stochastic modelling. Tilting of convection cells leads to the formation of sheared flows and quasi-periodic relaxation oscillations for the energy i
Externí odkaz:
http://arxiv.org/abs/2004.11073
Akademický článek
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Large-amplitude, intermittent fluctuations are ubiquitous in the boundary region of magnetically confined plasmas and lead to detrimental plasma-wall interactions in the next-generation, high duty cycle fusion power experiments. Using gas puff imagin
Externí odkaz:
http://arxiv.org/abs/1802.05052
Autor:
Garcia, O. E., Theodorsen, A.
Fluctuations due to a super-position of uncorrelated Lorentzian pulses with a random distribution of amplitudes and duration times are considered. These are demonstrated to be strongly intermittent in the limit of weak pulse overlap, resulting in lar
Externí odkaz:
http://arxiv.org/abs/1801.04715