COMPARISON OF EXPERIMENTAL-DESIGNS COMBINING PROCESS AND MIXTURE VARIABLES .1. DESIGN CONSTRUCTION AND THEORETICAL EVALUATION

The combination of process variables and mixture variables in experime ntal design is a problem which has not yet been solved. It is examined here whether a set of designs can be found which can be used for a se ries of models of reasonable complexity. The proposed designs are comp ared with known designs. A two process by three mixture variables case is used for examination of the designs. It is found that suitable des igns do exist, and that the design depends on the system under researc h.