Zobrazeno 1 - 10
of 5 703
pro vyhledávání: '"Nikolaos, S."'
Autor:
Ji, Chao, Papageorgiou, Nikolaos S.
We consider a parametric nonautonomous $(p, q)$-equation with unbalanced growth as follows \begin{align*} \left\{ \begin{aligned} &-\Delta_p^\alpha u(z)-\Delta_q u(z)=\lambda \vert u(z)\vert^{\tau-2}u(z)+f(z, u(z)), \quad \quad \hbox{in }\Omega,\\ &u
Externí odkaz:
http://arxiv.org/abs/2309.01354
Autor:
Eugenia Mylona, Dimitrios I. Zaridis, Charalampos Ν. Kalantzopoulos, Nikolaos S. Tachos, Daniele Regge, Nikolaos Papanikolaou, Manolis Tsiknakis, Kostas Marias, ProCAncer-I Consortium, Dimitrios I. Fotiadis
Publikováno v:
Insights into Imaging, Vol 15, Iss 1, Pp 1-16 (2024)
Abstract Objectives Radiomics-based analyses encompass multiple steps, leading to ambiguity regarding the optimal approaches for enhancing model performance. This study compares the effect of several feature selection methods, machine learning (ML) c
Externí odkaz:
https://doaj.org/article/682b01ff1aef464bb665b2cf0604e21d
Autor:
Vasileios C. Pezoulas, Dimitrios I. Zaridis, Eugenia Mylona, Christos Androutsos, Kosmas Apostolidis, Nikolaos S. Tachos, Dimitrios I. Fotiadis
Publikováno v:
Computational and Structural Biotechnology Journal, Vol 23, Iss , Pp 2892-2910 (2024)
Synthetic data generation has emerged as a promising solution to overcome the challenges which are posed by data scarcity and privacy concerns, as well as, to address the need for training artificial intelligence (AI) algorithms on unbiased data with
Externí odkaz:
https://doaj.org/article/1595553cc13b4b048a4661b05bb4ccd8
Publikováno v:
Recent Advances in Mathematical Analysis, Trends in Mathematics, Birkhauser, Cham, 2023, pp. 425-441
We consider a parametric Dirichlet problem driven by the anisotropic $(p,q)$-Laplacian and with a reaction which exhibits the combined effects of a superlinear (convex) term and of a negative sublinear term. Using variational tools and critical group
Externí odkaz:
http://arxiv.org/abs/2305.11515
Publikováno v:
Topol. Methods Nonlinear Anal. 61:1 (2023), str. 393-422
We consider a Neumann boundary value problem driven by the anisotropic $(p,q)$-Laplacian plus a parametric potential term. The reaction is ``superlinear". We prove a global (with respect to the parameter) multiplicity result for positive solutions. A
Externí odkaz:
http://arxiv.org/abs/2305.01037
Publikováno v:
Appl. Anal. 102:4 (2023), 1059-1076
We consider an anisotropic $(p,2)$-equation, with a parametric and superlinear reaction term. We show that for all small values of the parameter the problem has at least five nontrivial smooth solutions, four with constant sign and the fifth nodal (s
Externí odkaz:
http://arxiv.org/abs/2304.04201
Autor:
Valeria Dulio, Nikiforos Alygizakis, Kelsey Ng, Emma L. Schymanski, Sandrine Andres, Katrin Vorkamp, Juliane Hollender, Saskia Finckh, Reza Aalizadeh, Lutz Ahrens, Elodie Bouhoulle, Ľuboš Čirka, Anja Derksen, Geneviève Deviller, Anja Duffek, Mar Esperanza, Stellan Fischer, Qiuguo Fu, Pablo Gago-Ferrero, Peter Haglund, Marion Junghans, Stefan A. E. Kools, Jan Koschorreck, Benjamin Lopez, Miren Lopez de Alda, Giuseppe Mascolo, Cécile Miège, Leonard Osté, Simon O’Toole, Pawel Rostkowski, Tobias Schulze, Kerry Sims, Laetitia Six, Jaroslav Slobodnik, Pierre-François Staub, Gerard Stroomberg, Nikolaos S. Thomaidis, Anne Togola, Giorgio Tomasi, Peter C. von der Ohe
Publikováno v:
Environmental Sciences Europe, Vol 36, Iss 1, Pp 1-22 (2024)
Abstract Background Prioritisation of chemical pollutants is a major challenge for environmental managers and decision-makers alike, which is essential to help focus the limited resources available for monitoring and mitigation actions on the most re
Externí odkaz:
https://doaj.org/article/c34fe57eed5546748019d0a6f7871515
We consider an eigenvalue problem for a double-phase differential operator with unbalanced growth. Using the Nehari method, we show that the problem has a continuous spectrum determined by the minimal eigenvalue of the weighted p-Laplacian.
Externí odkaz:
http://arxiv.org/abs/2302.10475
Autor:
Sitokonstantinou, Vasileios, Koukos, Alkiviadis, Tsoumas, Ilias, Bartsotas, Nikolaos S., Kontoes, Charalampos, Karathanassi, Vassilia
Crop phenology is crucial information for crop yield estimation and agricultural management. Traditionally, phenology has been observed from the ground; however Earth observation, weather and soil data have been used to capture the physiological grow
Externí odkaz:
http://arxiv.org/abs/2211.14099