Articles with "third order" as a keyword



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Third‐order sliding mode fault‐tolerant control for satellites based on iterative learning observer

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Published in 2019 at "Asian Journal of Control"

DOI: 10.1002/asjc.2010

Abstract: The attitude fault‐tolerant control problem for a satellite with reaction‐wheel failures, uncertainties, and unknown external disturbances is investigated in this paper. Firstly, an iterative learning observer (ILO) is proposed to achieve fault detection, isolation, and… read more here.

Keywords: fault tolerant; tolerant control; third order; order sliding ... See more keywords
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Perylenediimide–Benzanthrone Dyad: Organic Chromophores with Enhanced Third‐Order Nonlinear‐Optical Activities

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Published in 2017 at "European Journal of Organic Chemistry"

DOI: 10.1002/ejoc.201700094

Abstract: Several perylenediimide-based chromophores with peripheral benzanthrone groups were developed and characterized for their third-order nonlinear optics properties by using the femtosecond Z-scan technique. As a consequence, these chromophores were found to exhibit a moderate two-photon… read more here.

Keywords: order nonlinear; benzanthrone dyad; perylenediimide benzanthrone; third order ... See more keywords
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A new framework to construct third‐order weighted essentially nonoscillatory weights using weight limiter functions

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Published in 2020 at "International Journal for Numerical Methods in Fluids"

DOI: 10.1002/fld.4926

Abstract: A new simple and generic framework is proposed to construct nonlinear weights for third‐order weighted essentially nonoscillatory scheme (WENO) reconstructions. It is done by imposing necessary conditions on nonlinear weights to get a nonoscillatory WENO… read more here.

Keywords: essentially nonoscillatory; order weighted; order; nonlinear weights ... See more keywords
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The QUICK scheme is a third‐order finite‐volume scheme with point‐valued numerical solutions

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Published in 2020 at "International Journal for Numerical Methods in Fluids"

DOI: 10.1002/fld.4975

Abstract: In this paper, we resolve the ever‐present confusion over the Quadratic Upwind Interpolation for Convective Kinematics (QUICK) scheme: it is a second‐order scheme or a third‐order scheme. The QUICK scheme, as proposed in the original… read more here.

Keywords: scheme third; order; order finite; quick scheme ... See more keywords
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Novel functional weights for improving the third‐order WENO schemes

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Published in 2021 at "International Journal for Numerical Methods in Fluids"

DOI: 10.1002/fld.5019

Abstract: In this article, we improved the nonlinear weight of the classical third‐order WENO scheme by using the limiter of the MUSCL scheme and got a new WENO scheme, the WENO‐F scheme, and developed three new… read more here.

Keywords: order weno; weno schemes; third order; scheme ... See more keywords
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Third‐order differential subordinations for multivalent functions in the theory of source‐sink dynamics

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Published in 2021 at "Mathematical Methods in the Applied Sciences"

DOI: 10.1002/mma.7486

Abstract: We propose third‐order differential subordination results associated with new admissible classes of multivalent functions defined in the open unit disk on the complex plane. Besides, we investigate the geometric properties of multivalent functions associated with… read more here.

Keywords: source sink; third order; source; order differential ... See more keywords
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Third‐order tunable filter with CFBW using two quarter‐wavelength resonators

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Published in 2021 at "Microwave and Optical Technology Letters"

DOI: 10.1002/mop.32883

Abstract: A tunable third‐order bandpass filter (BPF) with constant fractional bandwidth (CFBW) is presented. Only two quarter‐wavelength resonators have been used in comb‐line fashion to design the third‐order BPF. The physical dimensions of the resonators have… read more here.

Keywords: two quarter; filter; third order; wavelength resonators ... See more keywords
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Well-Posedness of Third Order Degenerate Differential Equations with Finite Delay in Banach Spaces

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Published in 2021 at "Results in Mathematics"

DOI: 10.1007/s00025-021-01376-8

Abstract: In this paper, we give necessary and sufficient conditions for the $$L^p$$ -well-posedness (resp. $$B_{p,q}^s$$ -well-posedness) for the third order degenerate differential equation with finite delay: $$(Mu)'''(t) + (Nu)''(t)= Au(t) + Bu'(t) + Gu''_t +… read more here.

Keywords: order degenerate; degenerate differential; finite delay; well posedness ... See more keywords
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Derivation of rainfall IDF relations by third-order polynomial normal transform

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Published in 2018 at "Stochastic Environmental Research and Risk Assessment"

DOI: 10.1007/s00477-018-1583-4

Abstract: Establishing the rainfall intensity–duration–frequency (IDF) relations by the conventional method, the use of parametric distribution models has the advantage of automatic compliance of monotonicity condition of rainfall intensity and frequency. However, fitting rainfall data to… read more here.

Keywords: idf relations; third order; rainfall idf; rainfall ... See more keywords
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Integrated intelligent computing paradigm for nonlinear multi-singular third-order Emden–Fowler equation

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Published in 2020 at "Neural Computing and Applications"

DOI: 10.1007/s00521-020-05187-w

Abstract: In this study, an advance computational intelligence scheme is designed and implemented to solve third-order nonlinear multiple singular systems represented with Emden–Fowler differential equation (EFDE) by exploiting the efficacy of artificial neural networks (ANNs), genetic… read more here.

Keywords: emden fowler; multi singular; third order; nonlinear multi ... See more keywords
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Effect of the crystalline environment on the third-order nonlinear optical properties of L-arginine phosphate monohydrate: a theoretical study

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Published in 2017 at "Journal of Molecular Modeling"

DOI: 10.1007/s00894-017-3274-3

Abstract: A supermolecular approach combined with an iterative electrostatic scheme was employed to investigate the nonlinear optical properties of the hybrid L-arginine phosphate monohydrate crystal, the procedure being aided by DFT calculations. The supermolecular scheme basically… read more here.

Keywords: optical properties; third order; arginine phosphate; phosphate monohydrate ... See more keywords