The Design of the Branch-and-cut System Abacus

The Design of the Branch - and - Cut SystemABACUSMichael

The software system ABACUS is an object-oriented framework for the implementation of branch-and-cut and branch-and-price algorithms. This paper describes the design of ABACUS including the design principles and the most important classes.

Angewandte Mathematik Und Informatik Universit at Zu K Oln Basic Design Ideas for the Branch-and-cut-system Abacus

The ABACUS system for branch-and-cut-and-price algorithms in integer programming and combinatorial optimization

The development of new mathematical theory and its application in software systems for the solution of hard optimization problems have a long tradition in mathematical programming. In this tradition we implemented ABACUS, an object-oriented software framework for branch-and-cut-and-price algorithms for the solution of mixed integer and combinatorial optimization problems. This paper discusses s...

Parameter Analysis and optimization of equal channel angular pressing extrusion for titanium alloy using Taguchi design of experiments method

In this paper the influence of different parameters on equal channel angular pressing (EADAP) of titanium alloy is investigated. In the first step the most important parameters are selected, and then a table of experiments is designed using Taguchi method. After designing the table of experiments, all of the experiments are simulated using Abacus software and the results are optimized using Tag...

Optimal Design of Shell-and-Tube Heat Exchanger Based on Particle Swarm Optimization Technique

The paper studies optimization of shell-and-tube heat exchangers using the particle swarm optimization technique. A total cost function is formulated based on initial and annual operating costs of the heat exchangers. Six variables – shell inside diameter, tube diameter, baffle spacing, baffle cut, number of tube passes and tube layouts (triangular or square) – are considered as the design para...