Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Paraskevi Roupa"'
Publikováno v:
Mathematics, Vol 11, Iss 19, p 4119 (2023)
We consider the scattering problem of line source electromagnetic waves using a multi-layered obstacle with a core, which may be a perfect conductor, a dielectric, or has an impedance surface. We formulate this problem in two dimensions and we prove
Externí odkaz:
https://doaj.org/article/1e85f0df6f464700be1609ca6c41c814
Publikováno v:
Mathematics, Vol 9, Iss 15, p 1806 (2021)
In this work, we present numerical methods appropriate for parameter estimation in high-dimensional statistical modelling. The solution of these problems is not unique and a crucial question arises regarding the way that a solution can be found. A co
Externí odkaz:
https://doaj.org/article/b448df8c45324ba3ba8b7336ce64cba2
Publikováno v:
Mathematics, Vol 9, Iss 12, p 1432 (2021)
In this paper, we study estimates for quadratic forms of the type xTA−mx, m∈N, for symmetric matrices. We derive a general approach for estimating this type of quadratic form and we present some upper bounds for the corresponding absolute error.
Externí odkaz:
https://doaj.org/article/33f1a55f3829495f93dfd7d1759ea8cc
Publikováno v:
Communications in Statistics - Simulation and Computation. :1-21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d34831e142b0d2348375b8c61df50ac
https://doi.org/10.1080/03610918.2023.2170415
https://doi.org/10.1080/03610918.2023.2170415
Publikováno v:
Reports on Mathematical Physics. 89:253-265
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9ebd0ff2de2e6f344ea65f60a66677e
https://doi.org/10.1016/s0034-4877(22)00026-x
https://doi.org/10.1016/s0034-4877(22)00026-x
Publikováno v:
Journal of Applied Mathematics and Physics. 10:1200-1216
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09911b7ff9f5709ce08cebc40b1878b8
https://doi.org/10.4236/jamp.2022.104085
https://doi.org/10.4236/jamp.2022.104085
Publikováno v:
Journal of Applied Mathematics and Physics. 10:2951-2964
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::236fb53ef5a018cc521744fca4544c1d
https://doi.org/10.4236/jamp.2022.1010198
https://doi.org/10.4236/jamp.2022.1010198
Publikováno v:
2022 12th International Conference on Dependable Systems, Services and Technologies (DESSERT).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d57a79ae0c3d063a1dd5f994c2fc8e
https://doi.org/10.1109/dessert58054.2022.10018805
https://doi.org/10.1109/dessert58054.2022.10018805
Publikováno v:
Communications in Statistics - Simulation and Computation. 51:1542-1563
The solution of the penalized least squares problems depends on a tuning parameter. A popular tool for specifying the tuning parameter is the generalized cross-validation (GCV). In this work, we ut...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c92ea368b3213d0354d78d1bfd78aaaa
https://doi.org/10.1080/03610918.2019.1676436
https://doi.org/10.1080/03610918.2019.1676436
Autor:
Marilena Mitrouli, Paraskevi Roupa
Publikováno v:
ETNA - Electronic Transactions on Numerical Analysis. 27:179-196
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc6613afd2970ee7f0e231f99dd04266
https://doi.org/10.1553/etna_vol47s179
https://doi.org/10.1553/etna_vol47s179