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pro vyhledávání: '"Gravvanis, A."'
Autor:
Salamanis, Athanasios I., Gravvanis, George A., Kotsiantis, Sotiris, Giannoutakis, Konstantinos M.
Publikováno v:
In Knowledge-Based Systems 4 November 2023 279
The manifold theory of barred-spiral structure provides a dynamical mechanism explaining how spiral arms beyond the ends of galactic bars can be supported by chaotic flows extending beyond the bar's co-rotation zone. We discuss its applicability to N
Externí odkaz:
http://arxiv.org/abs/1901.00692
Akademický článek
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An adaptive cluster-based sparse autoregressive model for large-scale multi-step traffic forecasting
Autor:
Salamanis, Athanasios I., Lipitakis, Anastasia-Dimitra, Gravvanis, George A., Kotsiantis, Sotiris, Anagnostopoulos, Dimosthenis
Publikováno v:
In Expert Systems With Applications 15 October 2021 180
Publikováno v:
MNRAS (December 01, 2016) 463 (2): 2210-2228
Using N-body simulations we study the structures induced on a galactic disc by repeated flybys of a companion in decaying eccentric orbit around the disc. Our system is composed by a stellar disc, bulge and live dark matter halo, and we study the sys
Externí odkaz:
http://arxiv.org/abs/1611.04891
Autor:
Anastasia A. Natsiou, George A. Gravvanis, Christos K. Filelis-Papadopoulos, Konstantinos M. Giannoutakis
Publikováno v:
Mathematics, Vol 11, Iss 3, p 640 (2023)
In this paper, we examine deflation-based algebraic multigrid methods for solving large systems of linear equations. Aggregation of the unknown terms is applied for coarsening, while deflation techniques are proposed for improving the rate of converg
Externí odkaz:
https://doaj.org/article/84dd6670b3f242f196067074144b38b0
Autor:
Natsiou, Anastasia A.1 (AUTHOR), Gravvanis, George A.2 (AUTHOR), Filelis-Papadopoulos, Christos K.3 (AUTHOR), Giannoutakis, Konstantinos M.4 (AUTHOR) kgiannou@uom.edu.gr
Publikováno v:
Mathematics (2227-7390). Feb2023, Vol. 11 Issue 3, p640. 15p.
Publikováno v:
In Journal of Computational and Applied Mathematics 15 May 2019 352:194-209
Autor:
Filelis-Papadopoulos, Christos K., Giannoutakis, Konstantinos M., Gravvanis, George A., Endo, Patricia Takako, Tzovaras, Dimitrios, Svorobej, Sergej, Lynn, Theo
Publikováno v:
In Simulation Modelling Practice and Theory April 2019 92:100-114
Autor:
Ernestini Tyfoxylou, Nick Voulgaris, Chris Gravvanis, Sophia Vlachou, Athina Markou, Labrini Papanastasiou, Nikolaos Tentolouris, Eva Kassi, Gregory Kaltsas, George P. Chrousos, George P. Piaditis
Publikováno v:
Biomedicines, Vol 10, Iss 9, p 2308 (2022)
Primary aldosteronism (PA) is the most common cause of endocrine hypertension. The prevalence of hypertension is higher in patients with diabetes mellitus-2 (DM-2). Following the limited existing data, we prospectively investigated the prevalence of
Externí odkaz:
https://doaj.org/article/4d05e6dc492641b08e95a1052ca40683