排序方式: 共有84条查询结果,搜索用时 31 毫秒
71.
In this paper we have applied the mathematical control theory to the accounting network flows, where the flow rates are constrained by linear inequalities. The optimal control policy is of the “generalized bang-bang” variety which is obtained by solving at each instant in time a linear programming problem whose objective function parameters are determined by the “switching function” which is derived from the Hamiltonian function. The interpretation of the adjoint variables of the control problem and the dual evaluators of the linear programming problem demonstrates an interesting interaction of the cross section phase of the problem, which is characterized by linear programming, and the dynamic phase of the problem, which is characterized by control theory. 相似文献
72.
This paper investigates the effect on the optimum solution of a (capacitated) transportation problem when the data of the problem (the rim conditions-i. e., the warehouse supplies and market demands-, the per unit transportation costs and the upper bounds) are continuously varied as a (linear) function of a single parameter. Operators that effect the transformation of optimum solution associated with such data changes, are shown to be a product of basis preserving operators (described in the earlier paper) that operate on a sequence of adjacent basis structures. Algorithms are provided for both rim and cost operators. The paper concludes with a discussion of the economic and managerial interpretations of the operators. 相似文献
73.
74.
75.
The classical repertoire of insurgency types is under-specified, and does not apply well to the case of Pakistan's conduct of insurgency in Kashmir. Pakistan's approach to insurgency has been a consistent tribal variant of focoism, in which there is a reliance on imported itinerant insurgents to conduct raids to stimulate an uprising. This has its basis in the traditional warfare of the region, learned US insurgency doctrine in the 1960s, and an historical disregard for subject populations, which has led to an aversion to fostering grass-roots political movements. 相似文献
76.
77.
78.
79.
80.