Feed formulation problem in Nigerian poultry farms: a mathematical programming approach

A mathematical programming formulation of the household activity rescheduling problem

The so-called activity-based approach to analysis of human interaction with the social and physical environments dates back to the original time–space geography works of Hägerstrand and his colleagues at the Lund School. Despite their obvious theoretical attractiveness, activity-based approaches to understanding and predicting travel behavior have suffered from the absence of an analytical fram...

Feed Formulation for Fish and Poultry

Supply chain optimization policy for a supplier selection problem: a mathematical programming approach

  Most supplier selection models consider the buyer’s viewpoint and maximize only the buyer’s profit. This does not necessarily lead to an optimal situation for all the members of a supply chain. Coordination models have been developed to optimize the entire supply chain and align the decisions between its entities. Little research has been done on the application of these models in the supplie...

Mathematical solution of multilevel fractional programming problem with fuzzy goal programming approach

In this paper, we show a procedure for solving multilevel fractional programming problems in a large hierarchical decentralized organization using fuzzy goal programming approach. In the proposed method, the tolerance membership functions for the fuzzily described numerator and denominator part of the objective functions of all levels as well as the control vectors of the higher level decision ...

Mathematical programming approach to tighten a Big-M formulation

In this paper we present a mathematical programming approach to tighten a Big-M formulation (PM ) of a Mixed Integer Problem with Logical Implications (P ). If M0 is a valid vector (the optimal solutions of P belong to the feasible solutions set of PM0) our procedures find a valid vector M such that M ≤ M0. As a consequence, the upper bounds generated by using the linear relaxations of PM are s...