Incorporating UCD into the software development lifecycle: a case study
This case study addresses how we applied user centered design (UCD) to the software development lifecycle for the new City of Austin Utilities Online Customer Care website. The case study focuses on the use of personas, prototypes, and user testing, discusses what worked well, and provides lessons learned.
In this paper, we develop a dynamic programming algorithm for the scenario-tree-based stochastic uncapacitated lot-sizing problem with random lead times. Our algorithm runs in O(N^2) time, where N is the input size of the scenario tree, and improves the recently developed algorithm that runs in O(N^3) time.