OMICS International OMICS International is a scientific organization that drives the progress of research through open access journals and organizes international conferences, The best in science news, commentary, and research. Global Journal of Technology and Optimization Volume 9, Issue 1 Direct Differentiation Based Hessian Formulation for Training Multilayer Feed forward Neural Networks using the LM AlgorithmPerformance Comparison with Conventional JacobianBased Learning Najam ul Qadir and Stephen Montgomery Smith The Roles of Supply Chain Performance Measurement on Manufacturing Firms Dametew AWW, Ebinger F and Beshah B