As an application of Hirota bilinear method, perturbation expansion truncated at different levels is used to obtain exact soliton solutions to (2+1)-dimensional nonlinear evolution equation in much simpler way in comparison to other existing methods. We have derived bilinear form of nonlinear evolution equation and using this bilinear form, bilinear Backlund transformations and construction of ...

in this article, religiosity status of people and different social groups in the city of tehran based on clark and stark’s analytic and theoretical models have been considered. with regard to these two viewpoints, the main aim of this research is to study and identify faith, affection, rituals, conceptual and consequential of people’s religiosity. the main question is that whether results of pr...

human action recognition is an important problem in computer vision. one of the methods that are recently used is sparse coding. conventional sparse coding algorithms learn dictionaries and codes in an unsupervised manner and neglect class information that is available in the training set. but in this paper for solving this problem, we use a discriminative sparse code based on multi-manifolds. ...