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متن کامل


نویسندگان: 

KHEIRI H. | JABBARI A.

اطلاعات دوره: 
  • سال: 

    2011
  • دوره: 

    6
  • شماره: 

    1
  • صفحات: 

    23-31
تعامل: 
  • استنادات: 

    3
  • بازدید: 

    440
  • دانلود: 

    0
چکیده: 

In this paper, analytic solutions of two-dimensional coupled Burgers’ equations are obtained by the Homotopy analysis and the Homotopy Pade methods. The obtained approximation by using Homotopy method contains an auxiliary parameter which is a simple way to control and adjust the convergence region and rate of solution series. The approximation solutions by [m,m] Homotopy Pade technique is often independent of auxiliary parameter and this technique accelerate the convergence of the related series.

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بازدید 440

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نویسنده: 

SHIVANIAN E. | EFTEKHARI E.

اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    5
تعامل: 
  • بازدید: 

    161
  • دانلود: 

    0
چکیده: 

OPTIMAL Homotopy ANALYSIS METHOD IS A POWERFUL TOOL FOR NONLINEAR DIFFERENTIAL EQUATIONS. IN THIS METHOD, THE CONVERGENCE OF THE SERIES SOLUTIONS IS CONTROLLED BY ONE OR MORE PARAMETERS WHICH CAN BE DETERMINED BY MINIMIZING A CERTAIN FUNCTION. THERE ARE SEVERAL APPROACHES TO DETERMINE THE OPTIMAL VALUES OF THESE PARAMETERS, WHICH CAN BE DIVIDED INTO TWO CATEGORIES, I.E. GLOBAL OPTIMIZATION APPROACH AND STEP-BY-STEP OPTIMIZATION APPROACH. IN THE GLOBAL OPTIMIZATION APPROACH, ALL THE PARAMETERS ARE OPTIMIZED SIMULTANEOUSLY AT THE LAST ORDER OF APPROXIMATION. HOWEVER, THIS PROCESS LEADS TO A SYSTEM OF COUPLED, NONLINEAR ALGEBRAIC EQUATIONS IN MULTIPLE VARIABLES WHICH ARE VERY DIFFICULT TO SOLVE. IN THE STEP-BY-STEP APPROACH, THE OPTIMAL VALUES OF THESE PARAMETERS ARE DETERMINED SEQUENTIALLY, THAT IS, THEY ARE DETERMINED ONE BY ONE AT DIFFERENT ORDERS OF APPROXIMATION. IN THIS WAY, THE COMPUTATIONAL EFFICIENCY IS SIGNIFICANTLY IMPROVED, ESPECIALLY WHEN HIGH ORDER OF APPROXIMATION IS NEEDED. IN THIS PAPER, FIRST DESCRIBED HAM AND THEN DESCRIBED OPTIMAL HAM AND EXPLAINED BASIC IDEAS.

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نویسنده: 

HESAMEDDINI ESMAIL | Mirzayi Morteza

اطلاعات دوره: 
  • سال: 

    2012
  • دوره: 

    43
تعامل: 
  • بازدید: 

    131
  • دانلود: 

    0
چکیده: 

THIS ARTICLE APPLIES THE Homotopy PERTURBATION (HPM), Homotopy ANALYSIS (HAM) AND ADOMIAN DECOMPOSITION METHODS (ADM) TO OBTAIN APPROXIMATE ANALYTICAL SOLUTIONS OF THE BENNEY-LIN EQUATION. THE COMPARISON BETWEEN THE SOLUTIONS OF THIS PROBLEM WILL BE DEMONSTRATED BY THESE THREE METHODS. GRAPHICAL REPRESENTATION SHOWS THAT THESE THREE METHODS ARE MOST EFFECTIVE, ACCURATE AND CONVENIENT TO SOLVE THIS PROBLEM.

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بازدید 131

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نویسندگان: 

گوچر فیلیپ

اطلاعات دوره: 
  • سال: 

    1400
  • دوره: 

    15
  • شماره: 

    1
  • صفحات: 

    145-181
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    78
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

متن کامل این مقاله به زبان انگلیسی می باشد. لطفا برای مشاهده متن کامل مقاله به بخش انگلیسی مراجعه فرمایید.لطفا برای مشاهده متن کامل این مقاله اینجا را کلیک کنید.

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بازدید 78

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نویسندگان: 

BIAZAR J. | HOSSEINI K. | GHOLAMIN P.

اطلاعات دوره: 
  • سال: 

    2008
  • دوره: 

    3
  • شماره: 

    19
  • صفحات: 

    945-954
تعامل: 
  • استنادات: 

    2
  • بازدید: 

    170
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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بازدید 170

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نویسندگان: 

HESAMEDDINI ESMAIL | PEYROVI AMIR

اطلاعات دوره: 
  • سال: 

    2009
  • دوره: 

    3
  • شماره: 

    2 (S.N. 6)
  • صفحات: 

    77-88
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    336
  • دانلود: 

    0
چکیده: 

In this article, the Homotopy Perturbation Method (HPM) is employed to approximate solutions of a modified Lotka–Volterra equation. HPM has been introduced by He to solve approximately linear or nonlinear differential equations. Approximate polynomials have also been constructed to find approximate solutions of a modified Lotka-Volterra system. Numerical comparisons are made between HPM and maple numerical results.

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بازدید 336

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نویسندگان: 

KHEIRI H. | ALIPOUR N. | DEHGHANI R.

نشریه: 

MATHEMATICAL SCIENCES

اطلاعات دوره: 
  • سال: 

    2011
  • دوره: 

    5
  • شماره: 

    1
  • صفحات: 

    33-50
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    463
  • دانلود: 

    0
چکیده: 

In this paper, analytic solutions of the modified Burgers-Korteweg-de Vries equation (mBKdVE) and the Newell -Whitehead equation are obtained by the Ho-motopy analysis method (HAM) and the Homotopy Pade method (HPadeM). The obtained approximation by using HAM contains an auxiliary parameter which is a way to control and adjust the convergence region and rate of the solution series.The approximation solution by [m; m] HPadeM is often independent of auxiliary parameter`h and this technique accelerate the convergence of the related series.

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بازدید 463

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نویسندگان: 

Biazar Jafar | Montazeri Roya

اطلاعات دوره: 
  • سال: 

    2020
  • دوره: 

    8
  • شماره: 

    4
  • صفحات: 

    770-780
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    42
  • دانلود: 

    0
چکیده: 

In this paper, optimal Homotopy asymptotic method (OHAM) and multistage op-timal Homotopy asymptotic (MOHAM) method are applied to , nd an approximate solution to Abel's integral equation, that is in fact a weakly singular Volterra inte-gral equation. To illustrate these approaches one example is presented. The results con , rm the e, ciency and ability of these methods to such equations. The results will be compared with the exact solution to , nd out that which method of these two is more accurate.

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نویسنده: 

ABBASBANDI S.

اطلاعات دوره: 
  • سال: 

    2009
  • دوره: 

    18
تعامل: 
  • بازدید: 

    157
  • دانلود: 

    0
چکیده: 

Please click on PDF file to view the abstract.

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اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    44
تعامل: 
  • بازدید: 

    134
  • دانلود: 

    0
چکیده: 

IN THIS TALK WE PRESENT SOME CONDITIONS UNDER WHICH THE PRODUCT MAP Q´Q, WHERE (FORMULA) IS A QUOTIENT MAP FOR SOME SPACES. AS A CONSEQUENCE, WE SHOW THAT THE TOPOLOGICAL Homotopy GROUPS PRESERVE THE PRODUCT OF SPACES UNDER CERTAIN CIRCUMSTANCES.

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