The authors in the two short conference papers (Omar Alshathry, et al. [15], Omar Alshathry and Helge Janicke [13]) discuss the inter-play between cost, schedule and quality and propose models to support meaningful decision-making by project managers for SQA activities during the software development life cycle. The papers discuss weight assignment to phase-wise SQA activities in direct proportion to their risk rating or defect removal efficiency and a regression model between the size of the work product and the number of defects originating from that work product