Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Maria Livada"'
Autor:
Helen Mavromichalaki, Maria Livada, Argyris Stassinakis, Maria Gerontidou, Maria-Christina Papailiou, Line Drube, Aikaterini Karmi
Publikováno v:
Atmosphere, Vol 15, Iss 9, p 1073 (2024)
A novel tool utilizing machine learning techniques was designed to forecast ap index values for the next three consecutive days (24 values). The tool employs time series data from the 3 h ap index of solar cycles 23 and 24 to train the Long Short-Ter
Externí odkaz:
https://doaj.org/article/5f8e08383c72464fb9e738829128907b
Autor:
Helen Mavromichalaki, Maria-Christina Papailiou, Maria Livada, Maria Gerontidou, Pavlos Paschalis, Argyris Stassinakis, Maria Abunina, Nataly Shlyk, Artem Abunin, Anatoly Belov, Victor Yanke, Norma Crosby, Mark Dierckxsens, Line Drube
Publikováno v:
Atmosphere, Vol 15, Iss 9, p 1033 (2024)
As the current solar cycle 25 progresses and moves towards solar maxima, solar activity is increasing and extreme space weather events are taking place. Two severe geomagnetic storms accompanied by two large Forbush decreases in galactic cosmic ray i
Externí odkaz:
https://doaj.org/article/4e7ec271e68745ee8fc150e7bf5ee5f7
Autor:
John Leventides, Evangelos Melas, Costas Poulios, Maria Livada, Nick C. Poulios, Paraskevi Boufounou
Publikováno v:
Fractal and Fractional, Vol 8, Iss 8, p 454 (2024)
The Athens Stock Exchange (ASE) is a dynamic financial market with complex interactions and inherent volatility. Traditional models often fall short in capturing the intricate dependencies and long memory effects observed in real-world financial data
Externí odkaz:
https://doaj.org/article/a7755c5a3249450faab5ea7d453f7eb0
Autor:
Helen Mavromichalaki, Pavlos Paschalis, Maria Gerontidou, Anastasia Tezari, Maria-Christina Papailiou, Dimitra Lingri, Maria Livada, Argyris Stassinakis, Norma Crosby, Mark Dierckxsens
Publikováno v:
Atmosphere, Vol 15, Iss 3, p 345 (2024)
Over the last years the Athens Cosmic Ray Group of the National & Kapodistrian University of Athens has implemented a warning tool called GLE Alert, which is a highly credible application that issues alerts when a ground level enhancement (GLE) start
Externí odkaz:
https://doaj.org/article/795ab53ac8a1496682655ac93786222d
Autor:
Helen Mavromichalaki, Pavlos Paschalis, Maria Gerontidou, Maria-Christina Papailiou, Evangelos Paouris, Anastasia Tezari, Dimitra Lingri, Maria Livada, Argyris N. Stassinakis, Norma Crosby, Mark Dierckxsens
Publikováno v:
Universe, Vol 8, Iss 7, p 378 (2022)
A ground-level enhancement (GLE) event is a sudden increase in cosmic ray intensity originated by solar sources and recorded by ground-based detectors. GLEs are invariably associated with large solar flares that can release and accelerate solar parti
Externí odkaz:
https://doaj.org/article/076d1c539aca4341a481c279f6d6d587
Publikováno v:
Journal of Optimization Theory and Applications. 189:836-853
In continuation of the work in Leventides and Petroulakis (Adv Appl Clifford Algebras 27:1503–1515, 2016), Leventides et al. (J Optim Theory Appl 169(1):1–16, 2016), which defines extremal varieties in $$\mathbb {P}\left( {{ \bigwedge ^2}{\mathbb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecb0e9de0e674591907c40b2a2e0d2b6
https://doi.org/10.1007/s10957-021-01858-3
https://doi.org/10.1007/s10957-021-01858-3
Publikováno v:
IFAC-PapersOnLine. 54:108-113
Early stages modelling of processes involves issues of classification of variables into inputs, outputs and internal variables, referred to as Model Orientation Problem (MOP) which may be addressed on state space implicit, or matrix pencil descriptio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6975ad0ab7f571cdd7bb20219b75df02
https://doi.org/10.1016/j.ifacol.2021.06.069
https://doi.org/10.1016/j.ifacol.2021.06.069
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9375d379fa3eb0a3aa180333befd9faa
https://doi.org/10.2139/ssrn.4121624
https://doi.org/10.2139/ssrn.4121624
In this article, we deal with the study of the determinantal assignment problem (DAP) when the parameters of the compensator are not entirely free, but some of them are fixed. The problem is reduced to a restricted form of an exterior algebra problem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28955127cffb17681229ec196e63ac10
https://openaccess.city.ac.uk/id/eprint/27547/1/IEEE_Transactions___Partial_Decomposability_of_myltivectors_Livada.pdf
https://openaccess.city.ac.uk/id/eprint/27547/1/IEEE_Transactions___Partial_Decomposability_of_myltivectors_Livada.pdf
Publikováno v:
Springer Optimization and Its Applications ISBN: 9783030558567
Given an interbank network (X, C, E0), where X is the set of banks, C is the vector of capitals, and E0 is the bilateral exposures matrix, the bankruptcy set Ux for each x ∈ X is defined. The set Ux contains all possible combinations of institution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4004128f0afb447a0e37d4dd4ac3b87
https://doi.org/10.1007/978-3-030-55857-4_14
https://doi.org/10.1007/978-3-030-55857-4_14