نتایج جستجو برای: Spline method

تعداد نتایج: 1638567  

Journal: :journal of linear and topological algebra (jlta) 0
j rashidinia school of mathematics, iran university of science and technology, tehran, iran. d kalvand faculty of mathematics, yerevan state university , yerevan, armenia. l tepoyan faculty of mathematics, yerevan state university , yerevan, armenia.

generalized solution on neumann problem of the fourth order ordinary di erential equation in space w2 (0; b) has been discussed , we obtain the condition on b.v.p when the solution is in classical form. formulation of quintic spline function has been derived and the consistency relations are given.numerical method,based on quintic spline approximation has been developed. spline solution of the...

Journal: :iranian journal of medical physics 0

introduction 3d reconstruction of an object from its 2d cross-sections (slices) has many applications in different fields of sciences such as medical physics and biomedical engineering. in order to perform 3d reconstruction, at first, desired boundaries at each slice are detected and then using a correspondence between points of successive slices surface of desired object is reconstructed. mate...

Journal: :journal of applied and computational mechanics 0
sara javidpoor bachelor’s degree student of department of marine engineering, khorramshahr university of marine science and technology nassim ale ali department of marine engineering, khorramshahr university of marine science & technology amer kabi 3assistant professor of department of marine engineering, khorramshahr university of marine science and technology

in this paper, numerical spline-based differential quadrature is presented for solving the boundary and initial value problems, and its application is used to solve the fixed rectangular membrane vibration equation. for the time integration of the problem, the runge–kutta and spline-based differential quadrature methods have been applied. the runge–kutta method was unstable for solving the prob...

Journal: :computational methods for differential equations 0
khalid k. ali department of mathematics, faculty of since, al-azhar univesity kamal raslan mathematics department, faculty of science, al-azhar university, nasr-city, cairo, egypt. talaat el danaf mathematics department, faculty of science, menoufia university, shebein el-koom, egypt.

in this paper, non-polynomial spline method for solving coupled burgers’ equations are presented. we take a new spline function. the stability analysis using von-neumann technique shows the scheme is unconditionally stable. to test accuracy the error norms2l, ∞l are computed and give two examples to illustrate the sufficiency of the method for solving such nonlinear partial differential equatio...

By applying finite difference formula to time discretization and the cubic B-splines for spatial variable, a numerical method for solving the inverse system of Burgers equations is presented. Also, the convergence analysis and stability for this problem are investigated and the order of convergence is obtained. By using two test problems, the accuracy of presented method is verified. Additional...

D. Kalvand J. Rashidinia, L. Tepoyan

Generalized solution on Neumann problem of the fourth order ordinary differential equation in space $W^2_alpha(0,b)$ has been discussed, we obtain the condition on B.V.P when the solution is in classical form. Formulation of Quintic Spline Function has been derived and the consistency relations are given.Numerical method,based on Quintic spline approximation has been developed. Spline solution ...

Journal: :wavelets and linear algebra 0
ataollah askari hemmat depatrment of mathematics graduate university of advanced technology tahereh ismaeelpour shahid bahonar university of kerman habibollah saeedi shahid bahonar university of kerman, kerman, iran

in this work, we proposed an ef ective method based on cubic and pantic b-spline scaling functions to solve partial di fferential equations of frac- tional order. our method is based on dual functions of b-spline scaling func- tions. we derived the operational matrix of fractional integration of cubic and pantic b-spline scaling functions and used them to transform the mentioned equations to a ...

Journal: :global analysis and discrete mathematics 0
hassan dana mazraeh school of mathematics and computer science, damghan university, p.o. box 36715-364, damghan, iran.

in this paper, a numerical solution of an inverse non-dimensional heat conduction problem by spline method will be considered. the given heat conduction equation, the boundary condition, and the initial condition are presented in a dimensionless form. a set of temperature measurements at a single sensor location inside the heat conduction body is required. the result show that the proposed meth...

Journal: :آب و خاک 0
محمد موسوی بایگی بتول اشرف

abstract nowadays, solar energy as one of the most important sources of clean and free of damaging environmental effects energy are used in many cases including generation of electricity, heat and desalination of salt water. the purpose of this research is identification of high radiation areas as most suitable regions for these applications.to do this, cloudiness data of 120 synoptic stations ...

Journal: :computational methods for differential equations 0
k. r. raslan department of mathematics, faculty of science, al-azhar university talaat s. el-danaf department of mathematics, faculty of science, menoufia university khalid k. ali department of mathematics, faculty of science, al-azhar univesity

in the present article, a numerical method is proposed for the numerical solution of thekdv equation by using a new approach by combining cubic b-spline functions. in this paper we convert the kdv equation to system of two equations. the method is shown to be unconditionally stable using von-neumann technique. to test accuracy the error norms2l, ∞l are computed. three invariants of motion are p...

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