OPTIMAL RESPONSE SURFACE DESIGNS IN THE PRESENCE OF DISPERSION EFFECTS 65 For the second-order model the D-optimal desig involve a shift of runs from the two locations of First-Order Model nearly equal quantities to the chosen locations.The 1-optimal designs are also highly invariant to changes TAelU5eLOatelPena0e5fcesfo Efficiency 100.00100.0010.00100.00100.00100.00 出设设语语超 First-Order Model 10.0010.00100.00100.00100.0010.00 Interaction Model Efficiency 100.0095.2088.3575.9963.3854.17 Efficiency10.0010.0010.0010.00100.00100.00 100.0091.137.6263.0650.4840.42 Efficiency100.00100.00100.00100.00100.00100.00 Interaction Model Second-Order Model 4040440-440-440-440 Doem Efficiency 100.00100.00100.0089.4470.7157.74 Efficiency 85.0676.0071.2467.1865.4563.41 4.0-4 30-42-0-30-0-00-0-0 1-3-1 1-3 Efficiency 100.0094.5582.1361.9642.9326.82 Efficiency 100.00100.00100.0094.0787.3778.99 Second-Order Model D-optimal designs involve a shift of runs from the edge 2-1-3 much more gradual in the case of the f-optimal de 85.0685.2284.6283.2780.8376.44 8 the efficiencies of the standard design,particularly 100.00973594.4491.889.5587.28 Vol.29,No.1.January 1997 Joural of Quality Technology Reproduced with permission of the copyright owner.Further reproduction prohibited without permission.Reproduced with permission of the copyright owner. Further reproduction prohibited without permission