Constraint Programming based Column Generation for Employee Timetabling

Employee timetabling problems form a large class of widely-encountered issues in service organizations. Often, the issue lies in the design of work shifts, which often have to satisfy many complex regulatory constraints coming from legislation and contractual agreements. The client, Omega Optimisation, was looking for a unified and flexible solution for these shift scheduling problems which address legal issues, activity requirements and labour costs.

A Hierarchic Parametric Geometric Modelling for Aerodynamics Shapes

Bombardier Aerospace, a world-leading manufacturer of innovative transportation solutions, from regional aircraft and business jets to rail transportation equipment, is interested in technology developments that improve aerodynamic design methods. One of their objectives is to improve the process in which aerodynamic parameters are introduced within the optimization process to facilitate the application of geometric and aerodynamic constraints.