  This thesis work summarizes studies in QCD for applications both at hadron
colliders and in exclusive processes. In the first part we focus our attention
on the study of the initial state scaling violations and the evolution of the
unpolarized parton distributions through Next-to-Next to Leading Order (NNLO)
in $\alpha_s$, the strong coupling, suitable for precision studies of the
parton model at the LHC. Specifically, we analize the methods available to
solve the equations and develope the theory of the logarithmic expansions at
the same perturbative order. A study of the Higgs total cross section is
included. The theoretical analysis is accompanied by the developement of
professional software partly documented in this thesis. We also include one
study of the evolution of the transverse spin distributions (the Soffer
inequality) and a parallel study of the asymmetries for the Drell-Yan process
for the proposed Pax experiment at GSI at NLO. In the second part we introduce
the extension of Deeply Virtual Compton Scattering to the electroweak sector
for neutrino detection at neutrino factories at intermediate energy.
