فهرس المقالات Block pulse functions

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  1 - An Effective Computational Approach by Hybrid Functions Operational Matrix for Solving Mixed Kind of the Partial Integro-Differential Equations
  یاسر رستمی
  In the present paper, a new method is introduced for the approximate solution of two-dimensional mixed Volterra-Fredholm Partial integro-differential equations with initial conditions using twodimensional hybrid Bernstein polynomials and Block-Pulse functions. For this أکثر

  In the present paper, a new method is introduced for the approximate solution of two-dimensional mixed Volterra-Fredholm Partial integro-differential equations with initial conditions using twodimensional hybrid Bernstein polynomials and Block-Pulse functions. For this purpose, an operational matrix of product and integration of the cross-product and differentiation are introduced that essentially of hybrid functions. The use of these operational matrices simplifies considerably the structure of the computational used for a set of algebraic equations methods for the solution of partial integro-differential equations.. The use of these operational matrices simplifies considerably the structure of the computational used for a set of algebraic equations methods for the solution of partial integro-differential equations.. The use of these operational matrices simplifies considerably the structure of the computational used for a set of algebraic equations methods for the solution of partial integro-differential equations. Convergence analysis and some numerical results are presented to illustrate the effectiveness and accuracy of the method. تفاصيل المقالة
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  2 - بسط سری انتگرال‌های وینر به کمک توابع بلاک پالس
  بنت الهدا هاشمی مرتضی خدابین
  در این مقاله یک روش عددی مناسب برای تقریب انتگرال­های وینری که جواب دقیق آنها در دسترس نیست یا پیدا کردن جواب دقیق آنها فرآیند بسیار مشکلی است با استفاده از توابع پایه­ای بلاک پالس معرفی می­شود. تحلیل خطای روش ارائه می­گردد. مثال­های عددی ارائه شده م أکثر

  در این مقاله یک روش عددی مناسب برای تقریب انتگرال­های وینری که جواب دقیق آنها در دسترس نیست یا پیدا کردن جواب دقیق آنها فرآیند بسیار مشکلی است با استفاده از توابع پایه­ای بلاک پالس معرفی می­شود. تحلیل خطای روش ارائه می­گردد. مثال­های عددی ارائه شده مبین این است که این روش از دقت مطلوبی برخوردار می­باشد. مزیت روش عددی مورد بحث، انعطاف پذیری و سادگی استفاده آن است. تفاصيل المقالة
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  3 - Numerical solution of nonlinear integral equations by Galerkin methods with hybrid Legendre and Block-Pulse functions
  M. Tavassoli Kajani S. Mahdavi
  In this paper, we use a combination of Legendre and Block-Pulse functionson the interval [0; 1] to solve the nonlinear integral equation of the second kind.The nonlinear part of the integral equation is approximated by Hybrid Legen-dre Block-Pulse functions, and the non أکثر

  In this paper, we use a combination of Legendre and Block-Pulse functionson the interval [0; 1] to solve the nonlinear integral equation of the second kind.The nonlinear part of the integral equation is approximated by Hybrid Legen-dre Block-Pulse functions, and the nonlinear integral equation is reduced to asystem of nonlinear equations. We give some numerical examples. To showapplicability of the proposed method. تفاصيل المقالة
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  4 - NUMERICAL SOLUTION OF DELAY INTEGRAL EQUATIONS BY USING BLOCK PULSE FUNCTIONS ARISES IN BIOLOGICAL SCIENCES
  M. Nouri K. Maleknejad
  This article proposes a direct method for solving three types of integral equations with time delay. By using operational matrix of integration, integral equations can be reduced to a linear lower triangular system which can be directly solved by forward substitution. N أکثر

  This article proposes a direct method for solving three types of integral equations with time delay. By using operational matrix of integration, integral equations can be reduced to a linear lower triangular system which can be directly solved by forward substitution. Numerical examples shows that the proposed scheme have a suitable degree of accuracy. تفاصيل المقالة