نتایج جستجو برای: grain based model
تعداد نتایج: 4435203 فیلتر نتایج به سال:
The selection efficiency of the most desirable safflower genotypes can be improved by incorporating the graphical methods and statistical analysis. This experiment was carried out to determine grain yield stability of safflower genotypes using the graphical and statistical methods. Twenty safflower genotypes were evaluated in Chachsaran, Choram, Behbehan and Dehdasht using randomized complete b...
We have developed a robust, accurate inversion techare useful indicators of thermodynamic processes in the snowpack. Changes in snow grain size can help identify nique for estimating the grain size in a snowpack’s surface ice sheet surface features, such as melt areas, snow dunes, layer from imaging spectrometer data. Using a radiative and blue ice regions, and often indicate changes in snowtra...
The applicability of standard lattice percolation models to a random two-dimensional grain structure is explored. A random network based on the triangle lattice is proposed as a more appropriate model, and results in a higher percolation threshold (0.711 compared with 0.653 for the standard hexagonal lattice). The triple junction constraint inherent in grain boundary structures is subsequently ...
Microstructure evolution in thin Cu films during room temperature self-annealing is investigated by means of a mesoscale level set model. The model is formulated such that the relative, or collective, influence of anisotropic grain boundary energy, mobility and heterogeneously distributed stored energy can be investigated. Density functional theory (DFT) calculations are performed in the presen...
در روزهای آغازین ورود موبایل به ایران، هیچ کس تصور نمی کرد ظرف مدت حدود سال شمار استفاده کنندگان از این وسیله به حدود میلیون مشترک برسد. اما با گذشت زمان این امر تحقق یافت و تعداد مشترکین سه اپراتور در حال حاضر به حدود میلیون رسیده است. امروزه موبایل به جز تماس های تلفنی برای مردم ایران استفاده های دیگری نیز دارد که از جمله میتوان به پرداخت قبوض، اطلاع رسانی ارگانها و نهادها، گرفتن گزارش از حس...
this study investigated how group formation method, namely student-selected vs. teacher-assigned, influences the results of the community model of teaching creative writing; i.e., group dynamics and group outcome (the quality of performance). the study adopted an experimental comparison group and microgenetic research design to observe the change process over a relatively short period of time. ...
among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...
We propose a framework for indexing of grain and sub-grain structures in electron backscatter diffraction (EBSD) images of polycrystalline materials. The framework is based on a previously introduced physics-based forward model by Callahan and De Graef (2013) relating measured patterns to grain orientations (Euler angle). The forward model is tuned to the microscope and the sample symmetry grou...
today the image of a permanent skeletal space of cities affected by some forces or mechanisms is put in time with social-economic development and while imposes a new face and perspective to physical anatomy of cities, and prepares field to changes in content and social- economic structures of cities too. simultaneously with quitting villages in order to settle in cities by villagers, the phen...
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