2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49109We review some techniques of resummation applied to heavy quark production in hadronic scattering and electroproduction near partonic threshold, and discuss the reduction of factorization scale dependence in resummed cross sections.14 pages, 3 eps figures. Talk presented at Workshop on Physics With Electron Polarized Ion Collider, EPIC '99, April 8-11, 1999, Indiana University Cyclotron FacilityHigh Energy Physics - Phenomenologytext