Complete Renormalization Group Improvement-Avoiding Factorization and   Renormalization Scale Dependence in QCD Predictions
  For moments of leptoproduction structure functions we show that all dependence on the renormalization and factorization scales disappears, provided that all the ultraviolet logarithms involving the physical energy scale Q are completely resummed. The approach is closely related to Grunberg's method of Effective Charges. A direct and simple method for extracting the universal dimensional transmutation parameter of QCD from experimental data is advocated. 
C.J. Maxwell and A. Mirjalili (Centre for Particle Theory, University   of Durham,Durham,UK)