Current Issue : October - December Volume : 2012 Issue Number : 4 Articles : 4 Articles
This paper investigates the impact of setup cost reduction on an inventory policy for a continuous\r\nreview mixture inventory model involving controllable backorder rate and variable lead time\r\nwith a service level constraint, in which the order quantity, setup cost, and lead time are decision\r\nvariables. Our objective is to develop an algorithm to determine the optimal order quantity, setup\r\ncost, and lead time simultaneously, so that the total expected annual cost incurred has a minimum\r\nvalue. Furthermore, four numerical examples are provided to illustrate the results, and the effects\r\nof system parameters are also included for decision making....
As we know, borrowing and lending risk-free assets arise extensively in the theory and practice of\r\nfinance. However, little study has ever investigated them in fuzzy portfolio problem. In this paper,\r\nthe returns of each assets are assumed to be fuzzy variables, then following the mean-variance\r\napproach, a new possibilistic portfolio selection model with different interest rates for borrowing\r\nand lending is proposed, in which the possibilistic semiabsolute deviation of the return is used to\r\nmeasure investment risk. The conventional probabilistic mean variance model can be transformed\r\nto a linear programming problem under possibility distributions. Finally, a numerical example is\r\ngiven to illustrate the modeling idea and the impact of borrowing and lending on optimal decision\r\nmaking....
The generalized synchronization between two complex networks with nonlinear coupling and\r\ntime-varying delay is investigated in this paper. The novel adaptive schemes of constructing\r\ncontroller response network are proposed to realize generalized synchronization with the drive\r\nnetwork to a given mapping. Two specific examples show and verify the effectiveness of the\r\nproposed method....
The problem of a hydromagnetic hot two-dimensional laminar jet issuing vertically into an\r\notherwise quiescent fluid of a lower temperature is studied.We propose solutions to the boundary\r\nlayer equations using the classical Fourier series. The method is essentiall to transform the\r\nboundary layer equations to a coupled set of nonlinear first-order ordinary differential equations\r\nthrough the Fourier series. The accuracy of the results has been tested by the comparison of the\r\nvelocity distributions obtained by the Fourier series with those calculated by finite difference\r\nmethod. The results show that the present method, based on the Fourier series, is an efficient\r\nmethod, suitable to solve boundary layer equations applied to plane jet flows with high accuracy...
Loading....