Results 31 to 40 of about 741,871 (299)

Using Differential Geometry to Revisit the Paradoxes of the Instantaneous Frequency

IEEE Open Access Journal of Power and Energy, 2022
This paper proposes a general framework to interpret the concept of Instantaneous Frequency (IF) in three-phase systems. The paper first recalls the conventional frequency-domain analysis based on the Fourier transform as well as the definition of IF ...
Federico Milano, Georgios Tzounas, Ioannis Dassios, Mohammed Ahsan Adib Murad, Taulant Kerci   +4 more
doaj   +1 more source

Stringy differential geometry, beyond Riemann

, 2011
While the fundamental object in Riemannian geometry is a metric, closed string theories call for us to put a two-form gauge field and a scalar dilaton on an equal footing with the metric.
Jeon, Imtak, Lee, Kanghoon, Park, Jeong-Hyuck   +2 more
core   +1 more source

Differential Geometry of Hydrodynamic Vlasov Equations [PDF]

, 2007
We consider hydrodynamic chains in $(1+1)$ dimensions which are Hamiltonian with respect to the Kupershmidt-Manin Poisson bracket. These systems can be derived from single $(2+1)$ equations, here called hydrodynamic Vlasov equations, under the map $A^n =\
Andrea Raimondo, Benney, Błaszak, Dorfman, Dubrovin, Ferapontov, Gibbons, Haantjes, John Gibbons, Kupershmidt, Kupershmidt, Kupershmidt, Kupershmidt, Pavlov, Pavlov, Pavlov, Pavlov, Tsarev   +17 more
core   +1 more source

Transparent DDoS defense by combining Kolmogorov–Arnold networks and XAI for real-time protection in cloud environments

Telematics and Informatics Reports
Cloud computing environments face persistent threats from sophisticated Distributed Denial of Service (DDoS) attacks. Effective defense requires not only high accuracy but also real-time performance and transparent decision-making, a combination that ...
Mohamed Ouhssini, Karim Afdel, Mohamed Akouhar, El hafed Agherrabi, Abdallah Abarda, Mohamed El Fatini, Hasna Mahmoud   +6 more
doaj   +1 more source

Geometrical modeling and numerical analysis of edge dislocation

Nihon Kikai Gakkai ronbunshu, 2021
In this study, we conduct modeling and numerical analysis of a straight edge dislocation in a three-dimensional geometrically nonlinear elastic medium.
Shunsuke KOBAYASHI, Ryuichi TARUMI
doaj   +1 more source

Differential Geometry of Toda Systems

, 1993
In the present paper we give a differential geometry formulation of the basic dynamical principle of the group--algebraic approach \cite{LeS92} --- the grading condition --- in terms of some holomorphic distributions on flag manifolds associated with the
Razumov, A. V., Saveliev, M. V.
core   +1 more source

Differential geometry, Palatini gravity and reduction [PDF]

, 2013
The present article deals with a formulation of the so called (vacuum) Palatini gravity as a general variational principle. In order to accomplish this goal, some geometrical tools related to the geometry of the bundle of connections of the frame bundle $
Baez J., Bryant R. L., Cartan Ã. J., Dacorogna B., Dacorogna B., Dewitt-Morette C., García P. L., Gotay M. J., Griffiths P., Hsu L., Husemoller D., Kobayashi S., Moseley C. G., Nakahara M., S. Capriotti, Spivak M., Thirring W., Wald R. M.   +17 more
core   +2 more sources

Multiview Differential Geometry of Curves

, 2016
The field of multiple view geometry has seen tremendous progress in reconstruction and calibration due to methods for extracting reliable point features and key developments in projective geometry.
Fabbri, Ricardo, Kimia, Benjamin
core   +1 more source

Nucleon spin decomposition and differential geometry [PDF]

, 2015
In the last few years, the so-called Chen et al. approach of the nucleon spin decomposition has been widely discussed and elaborated on. In this letter we propose a genuine differential geometric understanding of this approach.
François, Jordan, Lazzarini, Serge, Masson, Thierry   +2 more
core   +2 more sources

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source