DESIGN OF EXPERIMENTS AND SIX SIGMA METHODS IN LOGISTICS

More and more factors have an influence on effectiveness and efficiency in logistical processes and systems. An important question of science is to identify the most important factors of control complex logistical processes and systems, to know their levels and influences to control all things in a right manner. To find the optimum in control there are often a lot of experiments to realize – practical and theoretical ones. In this field are used the sensitivity analysis as well as simulation and the Design of Experiments (DoE) too. This is necessary to fast prevent failures and solve problems early. This task is not an easy one, especially in logistical networks where a failure can have a lot of causes. In the following some of the connections between the both sciences Quality Management methods and Logistics are discussed and examples are given to show the synergy and the greater effects which make the synergy effect possible. (Compare [1] [2]) Two special areas of methods are focused in this paper: Methods of DoE and of Six Sigma.