نتایج جستجو برای: two dimensional model
تعداد نتایج: 4269878 فیلتر نتایج به سال:
in this paper, an effective numerical method is introduced for the treatment of nonlinear two-dimensional volterra-fredholm integro-differential equations. here, we use the so-called two-dimensional block-pulse functions.first, the two-dimensional block-pulse operational matrix of integration and differentiation has been presented. then, by using this matrices, the nonlinear two-dimensional vol...
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the purpose of this study was to examine the status of supervision on departments’ heads at ferdowsi university of mashhad (fum) and realize some applied themes to provide a fit model for supervising departments’ heads in fum. the method was case study under a research category aimed for applied one. using purposive sampling, interviews were conducted with top fum managers, head departments, an...
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the present research was an attempt to see how quranic lexical collocations were translated into english by two professional translators namely, abdullah yusuf(2005), and muhammad s. shakir(2012). the study attempted qualitatively to shed light on how translators dealt with quranic lexical collocations when transferring them to the target language based on the newmark(1988) model , and quantit...
a two-dimensional single particle finite element model was used to examine the effects of particle fragmental pattern on the average molecular weights, polymerization rate and particle overheating in heterogeneous ziegler-natta olefin polymerization. a two-site catalyst kinetic mechanism was employed together with a dynamic two-dimensional molecular species in diffusion-reaction equation. the i...
The phenomenological model of Khossravi and Connors (1992) has been adopted to calculate the electrophoretic mobility of drugs at different concentrations of solvents in a binary mixture. The accuracy and predictability of the model have been evaluated employing 14 experimental data sets by using average percentage mean deviation (APMD). The obtained APMD for correlative and predictive studies ...
هدف از این پایان نامه کنترل ارتعاشات سیستم های ممتد یک و دو بعدی، بر اساس مدل تحلیلی و دقیق آنها که به صورت یک معادله با مشتقات جزیی است، می باشد. تاکنون روشهای چندی توسط محققان مختلف برای این منظور بکار رفته است، که روش مورد استفاده در این پایان نامه کنترل مرزی، بهینه و حلقه باز این سیستم ها بر اساس مدل تحلیلی آنها و با استفاده از اصل ماکزیمم می باشد. کنترل ارایه شده در این روش بر پایه تعریف ی...
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