نتایج جستجو برای: lagrangian approach
تعداد نتایج: 1308155 فیلتر نتایج به سال:
Taking the Stückelberg Lagrangian associated with the abelian selfdual model of P. K. Townsend et al as a starting point, we embed this mixed firstand second-class system into a pure first-class system by following systematically the generalized Hamiltonian approach of Batalin, Fradkin and Tyutin. The resulting Lagrangian possesses an extended gauge invariance and provides a non-trivial example...
In this paper, a constrained shortest path problem (CSP) in a network is investigated, in which some special plans for each link with corresponding pre-determined costs as well as reduction values in the link travel time are considered. The purpose is to find a path and selecting the best plans on its links, to improve the travel time as most as possible, while the costs of conducting plans do ...
In this paper, a step fixed charge transportation problem is developed where the products are sent from the sources to the destinations in existence of both unit and step fixed-charges. The proposed model determines the amount of products in the existing routes with the aim of minimizing the total cost (sum of unit and step fixed-charges) to satisfy the demand of each customer. As the problem i...
In the reproducing kernel particle method (RKPM), approximation is achieved through construction of shape functions in physical domain and interaction neighbouring nodes. When modelling large deformation problems, Lagrangian semi-Lagrangian formulations have been proposed, where RK are evaluated reference initial coordinates current configuration, respectively. The RKPM breaks down when mapping...
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