نتایج جستجو برای: fractional regression

تعداد نتایج: 374976  

In this paper, we apply the local fractional Adomian decomposition and variational iteration methods to obtain the analytic approximate solutions of Fredholm integral equations of the second kind within local fractional derivative operators. The iteration procedure is based on local fractional derivative. The obtained results reveal that the proposed methods are very efficient and simple tools ...

2016
NGUYEN HUY

This paper is concerned with backward problem for nonlinear space fractional diffusion with additive noise on the right-hand side and the final value. To regularize the instable solution, we use the trigonometric method in nonparametric regression associated with the truncated expansion method.

Journal: :journal of sciences, islamic republic of iran 2016
e. hesameddini a. rahimi

fractional calculus has been used to model the physical and engineering processes that have found to be best described by fractional differential equations. for that reason, we need a reliable and efficient technique for the solution of fractional differential equations. the aim of this paper is to present an analytical approximation solution for linear and nonlinear multi-order fractional diff...

In this article, we survey the asymptotic stability analysis of fractional differential systems with the Prabhakar fractional derivatives. We present the stability regions for these types of fractional differential systems. A brief comparison with the stability aspects of fractional differential systems in the sense of Riemann-Liouville fractional derivatives is also given. 

Journal: :international journal of nonlinear analysis and applications 0
samad mohseni kolagar department of mathematics, faculty of mathematical sciences, university of mazandaran, babolsar, iran ghasem a. afrouzi department of mathematics, faculty of mathematical sciences, university of mazandaran, babolsar, iran armin hadjian department of mathematics, faculty of basic sciences, university of bojnord, p.o. box 1339, bojnord 94531, iran

in this paper, under appropriate oscillating behaviours of the nonlinear term, we prove some multiplicity results for a class of nonlinear fractional equations. these problems have a variational structure and we find three solutions for them by exploiting an abstract result for smooth functionals defined on a reflexive banach space. to make the nonlinear methods work, some careful analysis of t...

Journal: :bulletin of the iranian mathematical society 0
k. maleknejad school of‎ ‎mathematics‎, ‎iran university of science & technology‎, ‎narmak‎, ‎tehran 16846 13114‎, ‎iran. k. nouri department of mathematics‎, ‎faculty of mathematics‎, ‎statistics‎ ‎and computer sciences‎, ‎semnan university‎, ‎p.o‎. ‎box 35195-363‎, ‎semnan‎, ‎iran. l. torkzadeh department of mathematics‎, ‎faculty of mathematics‎, ‎statistics‎ ‎and computer sciences‎, ‎semnan university‎, ‎p.o‎. ‎box 35195-363‎, ‎semnan‎, ‎iran.

in this paper we apply hybrid functions of general block-pulse‎ ‎functions and legendre polynomials for solving linear and‎ ‎nonlinear multi-order fractional differential equations (fdes)‎. ‎our approach is based on incorporating operational matrices of‎ ‎fdes with hybrid functions that reduces the fdes problems to‎ ‎the solution of algebraic systems‎. ‎error estimate that verifies a‎ ‎converge...

Journal: :computational methods for differential equations 0
mehrdad lakestani university of tabriz elmira ashpazzadeh university of tabriz

in this paper, a new numerical method for solving fractional optimal control problems (focps) is presented. the fractional derivative in the dynamic system is described in the caputo sense. the method is based upon biorthogonal cubic hermite spline multiwavelets approxima-tions. the properties of biorthogonal multiwavelets are first given. the operational matrix of fractional riemann-lioville i...

Journal: :iranian journal of science and technology (sciences) 2013
m. merdan

in this article, an analytical approximate solution of nonlinear fractional convection-diffusion with modifiedriemann-liouville derivative was obtained with the help of fractional variational iteration method (fvim). a newapplication of fractional variational iteration method (fvim) was extended to derive analytical solutions in theform of a series for this equation. it is indicated that the so...

‎In this article‎, ‎the multi-step conformable fractional differential transform method (MSCDTM) is applied to give approximate solutions of the conformable fractional-order differential systems‎. ‎Moreover‎, ‎we check the stability of conformable fractional-order L\"{u} system with the MSCDTM to demonstrate the efficiency and effectiveness of the proposed procedure.

In this manuscript a new method is introduced for solving fractional differential equations. The fractional derivative is described in the Caputo sense. The main idea is to use fractional-order Legendre wavelets and operational matrix of fractional-order integration. First the fractional-order Legendre wavelets (FLWs) are presented. Then a family of piecewise functions is proposed, based on whi...

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