Results 271 to 280 of about 1,080,088 (350)

Computer-assisted construction of <i>SU</i>(2)-invariant negative Einstein metrics. [PDF]

Ann Glob Anal Geom (Dordr)
Wang QS.
europepmc   +1 more source

Fractional modeling of nonlinear dispersive systems: on the comparative study of Whitham-Broer-Kaup equations using various derivatives. [PDF]

Sci Rep
Ahmed SA, Shah R, Mohamed A, Hassan AA, Dargail HE, Barakat HM, Yahya A.   +6 more
europepmc   +1 more source

Exploring highly dispersive optical solitons and modulation instability in nonlinear Schrödinger equations with nonlocal self phase modulation and polarization dispersion. [PDF]

Sci Rep
Hasan WM, Ahmed HM, Ahmed AM, Rezk HM, Rabie WB.   +4 more
europepmc   +1 more source

Perturbation determinants for singular perturbations [PDF]

Russian Journal of Mathematical Physics, 2014
Let A be a densely defined symmetric operator and let {Ae0 , Ae} be an ordered pair of proper extensions of A such that their resolvent difference is of trace class. We study the perturbation determinant ∆Ae0/Ae(·) of the singular pair {Ae0 , Ae} by using the boundary triplet approach.
Malamud, Mark M., Neidhardt, Hagen
openaire   +4 more sources

Homogenization of a Singular Perturbation Problem

Journal of Mathematical Sciences, 2019
The authors investigate the passage to the homogenization limit done simultaneously with the passage to the limit in yet another independent parameter. Under suitable assumptions and choices of the ordering between the two small parameters, the authors are able to show that there is a case when the limit (weak) solution satisfies a standard Bernoulli ...
Kim, S., Shahgholian, H.
openaire   +2 more sources

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Variable speed wind turbines with maximum power extraction using singular perturbation theory

Energy, 2016
Soheil Ganjefar, Ali Mohammadi
exaly   +2 more sources

Modeling and Transient Stability Analysis for Type-3 Wind Turbines Using Singular Perturbation and Lyapunov Methods

IEEE transactions on industrial electronics (1982. Print), 2023
Wind turbines (WTs) are prone to transient instability during weak grid faults, which is caused by their complex interactions. However, it is a challenge to analyze the transient stability, due to high-order and strong nonlinearity.
Yumei Ma, Donghai Zhu, Ziqin Zhang, X. Zou, Jiabing Hu, Yong Kang   +5 more
semanticscholar   +1 more source

Singular Perturbation-Based Adaptive Integral Sliding Mode Control for Flexible Joint Robots

IEEE transactions on industrial electronics (1982. Print), 2023
The flexible joint robot (FJR) typically experiences parametric variations, nonlinearities, underactuation, noise propagation, and external disturbances which seriously degrade the FJR tracking.
Raja Fawad Afsar Khan, Kamal Rsetam, Z. Cao, Z. Man   +3 more
semanticscholar   +1 more source