Sudden singularities in generalized hybrid metric-Palatini cosmologies
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/07/009
Abstract: In this work, we explore cosmological sudden singularities arising in the dynamically equivalent scalar-tensor representation of generalized hybrid metric-Palatini gravity. Using a FLRW background, we show that the structure of the field equations prevents sudden… read more here.
Keywords: time; sudden singularities; generalized hybrid; metric palatini ... See more keywords
Weak-field regime of the generalized hybrid metric-Palatini gravity
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review D"
DOI: 10.1103/physrevd.104.124030
Abstract: João Lúıs Rosa ID , ∗ Francisco S. N. Lobo ID , 3, † and Gonzalo J. Olmo ID4, 5, ‡ Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia Instituto de… read more here.
Keywords: sica; generalized hybrid; field regime; regime generalized ... See more keywords
Cosmic strings in generalized hybrid metric-Palatini gravity
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DOI: 10.1103/physrevd.104.124056
Abstract: Tiberiu Harko ID† Department of Theoretical Physics, National Institute of Physics and Nuclear Engineering (IFIN-HH), Bucharest, 077125 Romania, Astronomical Observatory, 19 Ciresilor Street, 400487 Cluj-Napoca, Romania, Department of Physics, Babes-Bolyai University, Kogalniceanu Street, Cluj-Napoca 400084,… read more here.
Keywords: physics; generalized hybrid; metric palatini; hybrid metric ... See more keywords
Wormholes in generalized hybrid metric-Palatini gravity obeying the matter null energy condition everywhere
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DOI: 10.1103/physrevd.98.064054
Abstract: Wormhole solutions in a generalized hybrid metric-Palatini matter theory, given by a gravitational Lagrangian $f\left(R,\cal{R}\right)$, where $R$ is the metric Ricci scalar, and $\mathcal{R}$ is a Palatini scalar curvature defined in terms of an independent… read more here.
Keywords: null energy; matter; palatini; generalized hybrid ... See more keywords
Integral Control of Megawatt Power Electronic Systems as Generalized Hybrid Systems
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2021.3082716
Abstract: This paper proposes and discusses the integral control of megawatts power electronics (MPE) systems. Firstly, we propose that MPE systems share the common features defined as generalized hybrid systems (GHSs), where large-time-scale continuous dynamic embodies… read more here.
Keywords: control; generalized hybrid; time scale; power ... See more keywords
An Equal Component Power-Based Generalized Hybrid Carrier System
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2018.2887382
Abstract: In this letter, we derive the basic conditions that should be met for the weighted signal suitable for the communication system and extend the weighted fractional Fourier transform-based classical hybrid carrier system to the generalized… read more here.
Keywords: carrier system; generalized hybrid; power; hybrid carrier ... See more keywords
Spherically Symmetric Space-Times in Generalized Hybrid Metric-Palatini Gravity
Sign Up to like & getrecommendations! Published in 2021 at "Gravitation and Cosmology"
DOI: 10.1134/s0202289321040046
Abstract: We discuss vacuum static, spherically symmetric asymptotically flat solutions of the generalized hybrid metric-Palatini theory of gravity (generalized HMPG) suggested by Böhmer and Tamanini, involving both a metric gμν and an independent connection Γ̂ α… read more here.
Keywords: spherically symmetric; generalized hybrid; metric palatini; hybrid metric ... See more keywords
Fixed points of generalized hybrid mappings on L2-embedded sets in Banach spaces
Sign Up to like & getrecommendations! Published in 2019 at "Fixed Point Theory"
DOI: 10.24193/fpt-ro.2019.1.13
Abstract: In this paper, first we generalize the notion of L-embedded sets in Banach spaces, defined by A.T.-M. Lau and Y. Zhang in ”Fixed point properties for semigroups of nonlinear mappings and amenability”, Journal of Functional… read more here.
Keywords: generalized hybrid; fixed points; banach spaces; sets banach ... See more keywords
N-Net: Lesion region segmentations using the generalized hybrid dilated convolutions for polyps in colonoscopy images
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Bioengineering and Biotechnology"
DOI: 10.3389/fbioe.2022.963590
Abstract: Colorectal cancer is the cancer with the second highest and the third highest incidence rates for the female and the male, respectively. Colorectal polyps are potential prognostic indicators of colorectal cancer, and colonoscopy is the… read more here.
Keywords: colonoscopy images; region segmentations; generalized hybrid; lesion region ... See more keywords