نتایج جستجو برای: perturbation removal

تعداد نتایج: 202129  

Journal: :computational methods for differential equations 0
hamidreza marasi university of bonab, bonab, iran esmail khezri university of bonab, bonab, iran

in this paper we apply the homotopy perturbation method to derive the higher-order asymptotic distribution of the eigenvalues and eigenfunctions associated with the linear real second order equation of sturm-liouville type on $[0,pi]$ with neumann conditions $(y'(0)=y'(pi)=0)$ where $q$ is a real-valued sign-indefinite number of $c^{1}[0,pi]$ and $lambda$ is a real parameter.

Journal: :physical chemistry research 2015
nahid farzi zeinab yaghoubi

the compressibility factor of nonassociated chain molecules composed of hard convex core yukawa segments was derived with saft-vr and an extension of the barker-henderson perturbation theory for convex bodies. the temperature-dependent chain and dispersion compressibility factors were derived using the yukawa potential. the effects of temperature, packing fraction, and segment number on the com...

Journal: :international journal of nano dimension 0
m. abdollahi department of physics, faculty of science, i.h.u tehran, iran. m. a. talebian darzi department of physics, faculty of science, i.h.u tehran, iran. h. hoseinkhani department of physics, faculty of science, i.h.u tehran, iran. h. baghbani rizi department of physics, faculty of science, i.h.u tehran, iran.

in this research, the effect of the first order magnetic field on the ground-state of a centered hydrogenic donor impurity in a gaas/alas spherical quantum dot has been calculated. the perturbation method has been used within the framework of effective mass approximation for these calculations. overall, the analysis shows that a proper choice of quantum dot radius and magnetic field can signifi...

Journal: :علوم 0
اسماعیل بابلیان esmaeil babolian دانشگاه علیرضا وحیدی ar vahidi دانشگاه خوارزمی

in this paper, we conduct a comparative study between the homotopy perturbation method (hpm) and adomian’s decomposition method (adm) for analytic treatment of nonlinear volterra integral equations, and we show that the hpm with a specific convex homotopy is equivalent to the adm for these type of equations.

Journal: :Physical Review D 2002

Journal: :Linear Algebra and its Applications 2002

Journal: :Transactions of the American Mathematical Society 1957

Journal: :Physics Letters B 1997

Journal: :Journal of Experimental and Theoretical Physics 2005

Journal: :Physics Reports 2003

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