Výsledky vyhledávání - "A. Peratzakis"

Akademický článek

Unified approach to catastrophic events: from the normal state to geological or biological shock in terms of spectral fractal and nonlinear analysis

Autor: K. A. Eftaxias, P. G. Kapiris, G. T. Balasis, A. Peratzakis, K. Karamanos, J. Kopanas, G. Antonopoulos, K. D. Nomicos

Publikováno v: Natural Hazards and Earth System Sciences, Vol 6, Iss 2, Pp 205-228 (2006)

An important question in geophysics is whether earthquakes (EQs) can be anticipated prior to their occurrence. Pre-seismic electromagnetic (EM) emissions provide a promising window through which the dynamics of EQ preparation can be investigated. How

Externí odkaz: https://doaj.org/article/313bf92541894e7e8140eda6145c9165

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Akademický článek

Extracting preseismic electromagnetic signatures in terms of symbolic dynamics

Autor: K. Karamanos, A. Peratzakis, P. Kapiris, S. Nikolopoulos, J. Kopanas, K. Eftaxias

Publikováno v: Nonlinear Processes in Geophysics, Vol 12, Iss 6, Pp 835-848 (2005)

When a heterogeneous material is strained, its evolution toward breaking is characterized by the nucleation and the coalescence of micro-cracks before the final break-up. Electromagnetic (EM) emission in a wide frequency spectrum ranging from very lo

Externí odkaz: https://doaj.org/article/cba0c596723c46e99cd8c13a8ad942b7

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Akademický článek

Experience of short term earthquake precursors with VLF–VHF electromagnetic emissions

Autor: K. Eftaxias, P. Kapiris, J. Polygiannakis, A. Peratzakis, J. Kopanas, G. Antonopoulos, D. Rigas

Publikováno v: Natural Hazards and Earth System Sciences, Vol 3, Iss 3/4, Pp 217-228 (2003)

Electromagnetic anomalies (EMA) covering a wide range of frequencies from ULF, VLF up to VHF have been observed before recent destructive earthquakes in continental Greece. We show that the features of these signals are possibly correlated with the f

Externí odkaz: https://doaj.org/article/9dde9d9564ef4bcdb235f50a38a331d9

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Report

Estimation of critical behavior from the density of states in Classical Statistical Models

Autor: Malakis, A., Peratzakis, A., Fytas, N. G.

Publikováno v: Phys. Rev. E vol.70, 066128 (2004)

We present a simple and efficient approximation scheme which greatly facilitates extension of Wang-Landau sampling (or similar techniques) in large systems for the estimation of critical behavior. The method, presented in an algorithmic approach, is

Externí odkaz: http://arxiv.org/abs/cond-mat/0510041

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Akademický článek

Evolving towards a critical point: A possible electromagnetic way in which the critical regime is reached as the rupture approaches

Autor: P. G. Kapiris, K. A. Eftaxias, K. D. Nomikos, J. Polygiannakis, E. Dologlou, G. T. Balasis, N. G. Bogris, A. S. Peratzakis, V. E. Hadjicontis

Publikováno v: Nonlinear Processes in Geophysics, Vol 10, Iss 6, Pp 511-524 (2003)

In analogy to the study of critical phase transitions in statistical physics, it has been argued recently that the fracture of heterogeneous materials could be viewed as a critical phenomenon, either at laboratory or at geophysical scales. If the pic

Externí odkaz: https://doaj.org/article/9f20f12907844e1e862c699d1ffe11c6

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Unified approach to catastrophic events: from the normal state to geological or biological shock in terms of spectral fractal and nonlinear analysis

Autor: G. Antonopoulos, P. Kapiris, Georgios Balasis, Konstantinos Karamanos, Konstantinos Nomicos, A. Peratzakis, J. Kopanas, Konstantinos Eftaxias

Publikováno v: Natural Hazards and Earth System Sciences, Vol 6, Iss 2, Pp 205-228 (2006)
ResearcherID
Natural Hazards and Earth System Sciences (NHESS)
Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2006, 6 (2), pp.205-228

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44c837850e0a4ff40b5436d1b2670a48
http://www.nat-hazards-earth-syst-sci.net/6/205/2006/nhess-6-205-2006.pdf

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Extracting preseismic electromagnetic signatures in terms of symbolic dynamics

Autor: Konstantinos Eftaxias, Konstantinos Karamanos, J. Kopanas, P. Kapiris, Stavros D. Nikolopoulos, A. Peratzakis

Publikováno v: Nonlinear Processes in Geophysics
Nonlinear Processes in Geophysics, European Geosciences Union (EGU), 2005, 12 (6), pp.835-848
Nonlinear Processes in Geophysics, Vol 12, Iss 6, Pp 835-848 (2005)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6642d051f21f45def674516c5ff0317a
https://doi.org/10.5194/npg-12-835-2005

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Fractal spectral analysis of pre-epileptic seizures in terms of criticality

Autor: Xin Yao, P. Kapiris, Xiaoli Li, A. Peratzakis, J. Polygiannakis, Konstantinos Eftaxias

Publikováno v: Journal of Neural Engineering. 2:11-16

The analysis of pre-epileptic seizure through EEG (electroencephalography) is an important issue for epilepsy diagnosis. Currently, there exist some methods derived from the dynamics to analyse the pre-epileptic EEG data. It is still necessary to cre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d10bc9698b2c151836b67e69c692109
https://doi.org/10.1088/1741-2560/2/2/002

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REVIEW AND A MODEL OF PRE-SEISMIC ELECTROMAGNETIC EMISSIONS IN TERMS OF FRACTAL ELECTRODYNAMICS

Autor: P. Skountzos, P. Kapiris, J. Kopanas, A. Peratzakis, J. Polygiannakis, Panayiotis Frangos, Konstantinos Eftaxias, Dwight L. Jaggard

Publikováno v: Fractals. 12:243-273

We introduce a new model of the generation of pre-seismic electromagnetic emissions, which explains the observed phenomenology in terms of its geometry and fractal electrodynamics. Accumulated evidence indicates that an earthquake can be viewed as a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2599fcca4accfd3540e9ef1f90ca33e1
https://doi.org/10.1142/s0218348x04002501

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ON THE WANG–LANDAU METHOD USING THE N-FOLD WAY

Autor: A. Malakis, A. S. Peratzakis, I. A. Hadjiagapiou, S.S. Martinos

Publikováno v: International Journal of Modern Physics C. 15:729-740

We present a variation of the N-fold way algorithm, which improves efficiency when one combines the Wang–Landau method with the N-fold way. It is shown that the new version of the N-fold way algorithm has good performance when used for importance s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f049731c7232a5900d19c7a54ffec805
https://doi.org/10.1142/s0129183104006182

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