نتایج جستجو برای: fractional values

تعداد نتایج: 560632  

2008
Richard Herrmann

Fractional calculus and q-deformed Lie algebras are closely related. Both concepts expand the scope of standard Lie algebras to describe generalized symmetries. For the fractional harmonic oscillator, the corresponding q-number is derived. It is shown, that the resulting energy spectrum is an appropriate tool e.g. to describe the ground state spectra of even-even nuclei. In addition, the equiva...

2014
Carson Ingo Richard L. Magin Todd B. Parrish

Fractional order derivative operators offer a concise description to model multi-scale, heterogeneous and non-local systems. Specifically, in magnetic resonance imaging, there has been recent work to apply fractional order derivatives to model the non-Gaussian diffusion signal, which is ubiquitous in the movement of water protons within biological tissue. To provide a new perspective for establ...

2014
Xiaohong ZHANG Qiang SUN Peng CHENG

Integer orders differential system is a special case of fractional-order differential system. Integer orders chaotic system that we usually study is ideally approximate to realistic chaotic system. Fractional-order chaotic system has broader and changeable values of order and more complex dynamical behavior than integer order chaotic system. Thus, fractional-order differential equation can desc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده روانشناسی و علوم تربیتی 1389

sarvey values personality characteristtics of good and bad curtain gairls

Journal: :bulletin of the iranian mathematical society 0
s. irandoust-pakchin department of applied mathematics‎, ‎faculty of mathematical sciences, university of tabriz‎, ‎tabriz‎, ‎iran. m. lakestani department of applied mathematics‎, ‎faculty of mathematical sciences, university of tabriz‎, ‎tabriz‎, ‎iran. h. ‎kheiri department of applied mathematics‎, ‎faculty of mathematical sciences, university of tabriz‎, ‎tabriz‎, ‎iran.

‎it is commonly accepted that fractional differential equations play‎ ‎an important role in the explanation of many physical phenomena‎. ‎for‎ ‎this reason we need a reliable and efficient technique for the‎ ‎solution of fractional differential equations‎. ‎this paper deals with‎ ‎the numerical solution of a class of fractional differential‎ ‎equation‎. ‎the fractional derivatives are described...

2016
Pooja Mohindru Rajesh Khanna S. S. Bhatia

The paper presents a new closed-form expression for the fractional Fourier transform of generalized Triangular and Welch window functions. Fractional Fourier Transform (FrFT) is a parameterized transform having an adjustable transform parameter which makes it more flexible and superior over ordinary Fourier transform in several applications. It is an important tool used in signal processing for...

Journal: :computational methods for differential equations 0
mohammadreza ahmadi darani department of applied mathematics, faculty of mathematical sciences, shahrekord university, p.o. box 115, shahrekord, iran. mohammad hossein derakhshan department of applied mathematics, faculty of mathematical sciences, shahrekord university, p.o.box 115, shahrekord, iran alireza ansari department of applied mathematics, faculty of mathematical sciences, shahrekord university, p.o.box 115, shahrekord, iran reza khoshsiar department of applied mathematics, faculty of mathematical sciences, shahrekord university, p.o.box 115, shahrekord, iran

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 di fferential systems. a brief comparison with the stability aspects of fractional differential systems in the sense of riemann-liouville fractional derivatives is also given.

Journal: :journal of sciences, islamic republic of iran 2012
g.b. loghmani

in this paper, boundary value problems of fractional order are converted into an optimal control problems. then an approximate solution is constructed from translations and dilations of a b-spline function such that the exact boundary conditions are satisfied. the fractional differential operators are taken in the riemann-liouville and caputo sense. several example are given and the optimal err...

2015
Mohamed S Al-Luhaibi

This paper presents the approximate analytical solutions to solve the nonlinear gas dynamics and coupled Burger's equations with fractional time derivative. By using initial values, the explicit solutions of the equations are solved by using a reliable algorithm. Numerical results show that the new iterative method is easy to implement and accurate when applied to time-fractional partial differ...

2017
Alexander L. Sakhnovich Lev A. Sakhnovich A. L. SAKHNOVICH

Linear-fractional transformations of the pairs with J-property are considered. Extremal functions from an important subclass obtained in this way are expressed as mean values of extremal functions from another subclass of these linear-fractional transformations. Applications to some spectral and interpolation problems are discussed.

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