1 Ocak 2017 Dergi makalesi Açık Erişim

Aksoylu, Burak; Beyer, Horst Reinhard; Celiker, Fatih

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        "name": "Aksoylu, Burak"
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        "name": "Beyer, Horst Reinhard"
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        "affiliation": "Wayne State Univ, Dept Math, 656 W, Detroit, MI 48202 USA", 
        "name": "Celiker, Fatih"
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    "description": "We study nonlocal equations from the area of peridynamics, an instance of nonlocal wave equation, and nonlocal diffusion on bounded domains whose governing equations contain a convolution operator based on integrals. We generalize the notion of convolution to accommodate local boundary conditions. On a bounded domain, the classical operator with local boundary conditions has a purely discrete spectrum, and hence, provides a Hilbert basis. We define an abstract convolution operator using this Hilbert basis, thereby automatically satisfying local boundary conditions. The main goal in this paper is twofold: apply the concept of abstract convolution operator to nonlocal problems and carry out a numerical study of the resulting operators. We study the corresponding initial value problems with prominent boundary conditions such as periodic, antiperiodic, Neumann, and Dirichlet. To connect to the standard convolution, we give an integral representation of the abstract convolution operator. For discretization, we use a weak formulation based on a Galerkin projection and use piecewise polynomials on each element which allows discontinuities of the approximate solution at the element borders. We study convergence order of solutions with respect to polynomial order and observe optimal convergence. We depict the solutions for each boundary condition.", 
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    "journal": {
      "issue": "9", 
      "pages": "1077-1114", 
      "title": "NUMERICAL FUNCTIONAL ANALYSIS AND OPTIMIZATION", 
      "volume": "38"
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    "title": "Application and Implementation of Incorporating Local Boundary Conditions into Nonlocal Problems"
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