List of Articles optimality Open Access Article Abstract Page Full-Text 1 - A goal geometric programming problem (G2P2) with logarithmic deviational variables and its applications on two industrial problems Payel Ghosh Tapan Kumar Roy Open Access Article Abstract Page Full-Text 2 - Shrinkage simplex-centroid designs for a quadratic mixture model Davood Shishebori Abolghasem Yousefi Babadi Taha Hasan Sajid Ali Munir Ahmed