Liu, Xing. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (p. 80-87). / Abstracts in English and Chinese. / Abstract --- p.i / Acknowledgement --- p.iv / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Literature Review --- p.10 / Chapter 3 --- The 2-Promotional Level Model --- p.15 / Chapter 3.1 --- Average Profit Function --- p.17 / Chapter 3.2 --- Auxiliary Profit Function --- p.19 / Chapter 3.3 --- Characterizing the Auxiliary Function --- p.21 / Chapter 3.4 --- Display Optimization --- p.22 / Chapter 3.5 --- Ordering Policy Optimization --- p.27 / Chapter 3.6 --- "An Algorithm for Finding an Optimal (r, Q, d, D) Policy" --- p.28 / Chapter 3.7 --- Optimality Verification --- p.30 / Chapter 4 --- Multiple Promotional Level Model --- p.36 / Chapter 4.1 --- Analysis --- p.38 / Chapter 4.2 --- "An Algorithm for Finding an Optimal (r,Q,dn, .,d1,D1,...,Dn)Policy" --- p.46 / Chapter 5 --- Extension to Random Demand Size --- p.49 / Chapter 6 --- Numerical Examples --- p.63 / Chapter 7 --- Concluding Remarks --- p.75 / Bibliography --- p.80