Results 21 to 30 of about 172,072 (313)
On solutions of fractional order time varying linear dynamical systems model
Arab Journal of Basic and Applied Sciences, 2021 In this paper, the linear and nonlinear fractional order time varying linear dynamical systems model has been studied. The homotopy perturbation method is used to find the approximation solution.
Mahmut Modanli, Ali Akgül
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Approximation methods for non-linear gravitational clustering [PDF]
Physics Reports, 1995 We discuss various analytical approximation methods for following the evolution of cosmological density perturbations into the strong (i.e. nonlinear) clustering regime. These methods can be classified into five types: (i) simple extrapolations from linear theory, such as the high--peak model and the lognormal model; (ii) {\em dynamical} approximations,
Sahni, Varun, Coles, Peter
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Differential Structure of Inductive Proximity Sensor
Sensors, 2019 The inductive proximity sensor (IPS) is applicable to displacement measurements in the aviation field due to its non-mechanical contact, safety, and durability.
Yi-Xin Guo +4 more
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Time-frequency doubly selective channel estimation based on compressed sensing
上海师范大学学报. 自然科学版, 2017 In this paper,considering time-frequency doubly selective channel,we utilize the channel's time correlation that the channel coefficientscorresponding tothe neighboring instants have a strong correlation.And we present a linear approximation method,which
Tu Yuliang +3 more
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FFT-Based Numerical Method for Nonlinear Elastic Contact
Chinese Journal of Mechanical Engineering, 2023 In theoretical research pertaining to sealing, a contact model must be used to obtain the leakage channel. However, for elastoplastic contact, current numerical methods require a long calculation time.
Fei Guo +4 more
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Majlesi Journal of Electrical Engineering, 2023 The functioning of a thermoelectric system in a stationary mode is often inefficient because it does not allow flexible control of the temperature regime.
Gleb Vasilyev +3 more
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Approximate Solutions to Dynamic Models (Linear Methods) [PDF]
SSRN Electronic Journal, 2006 Linear Methods are often used to compute approximate solutions to dynamic models, as these models often cannot be solved analytically. Linear methods are very popular, as they can easily be implemented. Also, they provide a useful starting point for understanding more elaborate numerical methods.
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Barekeng, 2020 Non-linear differential equations with fractional derivative order are mathematical models that are widely used in modeling physical phenomena, one of the applications of these models is non-linear fractional wave equations.
Faiqul Fikri +2 more
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A Proximal Bundle Method with Approximate Subgradient Linearizations [PDF]
SIAM Journal on Optimization, 2006 We give a proximal bundle method for minimizing a convex function $f$ over a closed convex set. It only requires evaluating $f$ and its subgradients with an accuracy $\epsilon>0$, which is fixed but possibly unknown. It asymptotically finds points that are $\epsilon$-optimal.
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MATEC Web of Conferences, 2018 This paper presents a nonlinear differential equations system piecewise continuous approximation. The piecewise continuous approximation improves piecewise linear approximation through reducing the errors at the boundaries of different linear ...
Leibov Roman
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