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Basic Idea: By leveraging our ability to solve the optimization/separation problem for a relaxation, we can improve the bound yielded by the LP relaxation.
In this article, we present a family of algorithms for linear programming based on an algorithm proposed by von Neumann. The von Neumann algorithm is very attractive due to its simplicity, but is not practical for solving most linear programs to optimality due to its slow convergence. Our algorithms were developed with the objective of improving the… (More)
OBJECTIVE To evaluate the social, economic and health aspects related to former professional soccer players in Brazil. METHODS This was a cross-sectional study with the participation of 100 male Brazilian former professional soccer players. For characterization of the sample variables such as age, current and past weight, height, BMI (Body Mass Index) and… (More)
The multimodal freight transportation planning is a complex problem with several factors affecting decisions, including network coverage, carriers and their schedules, existing contractual agreements with carriers and clients, carrier capacity constraints, and market conditions. Day-to-day operations like booking and bidding are mostly done manually and… (More)