全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:A. Ditkowski , S. Gottlieb
来源:[J].Journal of Scientific Computing(IF 1.71), 2017, Vol.73 (2-3), pp.691-711Springer
摘要:The commonly used one step methods and linear multi-step methods all have a global error that is of the same order as the local truncation error (as defined in [ 1 , 6 , 8 , 13 , 15 ]). In fact, this is true of the entire class of general linear methods. In practice, this means t...
作者:A. Ditkowski , R. Katz
来源:[J].Journal of Scientific Computing(IF 1.71), 2019, Vol.79 (3), pp.1981-2005Springer
摘要:Abstract(#br)In this manuscript, we analyze the expansions of functions in orthogonal polynomials associated with a general weight function in a multidimensional setting. Such orthogonal polynomials can be obtained, e.g, by Gram–Schmidt orthogonalization. However, in most ca...
作者:S. Abarbanel , A. Ditkowski
来源:[J].Applied Numerical Mathematics(IF 1.152), 2015, Vol.93, pp.61-68Elsevier
摘要:Abstract(#br)We investigate linear wave propagation in non-uniform medium under the influence of gravity. Unlike the case of constant properties medium here the linearized Euler equations do not admit a plane-wave solution. Instead, we find a “pseudo-plane-wave”. Also, there...
作者:A. Ditkowski , Y. Harness
来源:[J].Applied Numerical Mathematics(IF 1.152), 2012, Vol.62 (12), pp.1819-1836Elsevier
摘要:Abstract(#br)We propose a new methodology for the evaluation of the scattered radiation by objects of uncertain shape. The uncertainties are handled by treating them as random fields. The analysis is not restricted to small geometric variations, such as in modeling of rough surfa...
作者:Y. Harness , A. Ditkowski
来源:[J].Journal of Computational Physics(IF 2.138), 2013, Vol.248, pp.127-146Elsevier
摘要:Abstract(#br)We propose an efficient algorithm for obtaining a numerical solution of scattering problems by the null-field method. The algorithm generates an optimized reconstruction kernel iteratively, where at each iteration the worst case error is minimized. An accurate estima...
作者:A. Ditkowski , K. Dridi , J.S. Hesthaven
来源:[J].Journal of Computational Physics(IF 2.138), 2001, Vol.170 (1), pp.39-80Elsevier
摘要:Abstract(#br)A convergent second-order Cartesian grid finite difference scheme for the solution of Maxwell's equations is presented. The scheme employs a staggered grid in space and represents the physical location of the material and metallic boundaries correctly, hence eliminat...
作者:A. Ditkowski , D. Gottlieb , B. W. Sheldon
来源:[J].Journal of Materials Research(IF 1.713), 2000, Vol.15 (12), pp.2695-2705Cambridge U Press
摘要:A key difficulty in isothermal, isobaric chemical vapor infiltration is the long processing times that are typically required. With this in mind, it was important to minimize infiltration times. This optimization problem was addressed here, using a relatively simple model for dil...

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