in this paper the concept of the minimum universal cost flow (mucf) for an infeasible flow network is introduced. a new mathematical model in which the objective function includes the total costs of changing arc capacities and sending flow is built and analyzed. a polynomial time algorithm is presented to find the mucf.

This paper argues that non-colluding price setting firms in an uncertain economic environment will set a ‘low’ markup relative to the profit maximising markup if; (a) they are uncertain of the profit maximising markup; and (b) the cost to firms of mistakenly setting a ‘high’ markup is greater than if they mistakenly set a ‘low’ markup. Furthermore, firms will set a lower markup the higher is th...

In this paper the concept of the Minimum Universal Cost Flow (MUCF) for an infeasible flow network is introduced. A new mathematical model in which the objective function includes the total costs of changing arc capacities and sending flow is built and analyzed. A polynomial time algorithm is presented to find the MUCF.

objective: economic analysis was performed for the main horticultural crops in buin zahra (pistachio, peach, nectarine, and apple). there were dependent and independent variables in this research. methods: the independent variables were planting method (mechanized and conventional), land area used for fruit production, and land ownership. the maximum energy used, mostly in the form of fossil fu...

In the GA approach the parameters that influence its performance include population size, crossover rate and mutation rate. Genetic algorithms are suitable for traversing large search spaces since they can do this relatively fast and because the mutation operator diverts the method away from local optima, which will tend to become more common as the search space increases in size. GA’s are base...

«corporate social responsibility» is the term of 1990 extensively, with the liberation of the economy and a profound gap between the role of the social and economic, was created, emerged. the theory is, at first, be fitted; as effects alien before it aspect of the commercial enterprises, solely for economic activity for your maximum profit for attention of return and profit without cost, for it...

abstract comparative advantage is one of the important economic criterions in production, import and export programming. in this survey, existence and nonexistence of the most important vegetables(potato, cucumber and tomato) comparative advantage in jiroft aria in the year 1385-86 by use of two comparative advantage recognition indexes was determined. the first indexes were social cost benefit...